Surface Water Supply 

of the United States 

1956

13. Snake River Basin

Prepared under the direction of ]. V. B. WELLS, Chief, Surface Water Branch

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1447

Prepared in cooperation with the 

States of Idaho, Nevada, Oregon, 

Utah, Washington, and Wyoming, 

and with other agencies

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1958
UNITED STATES DEPARTMENT OF THE INTERIOR 

FRED A. SEATON, Secretary

GEOLOGICAL SURVEY 

Thomas B. Nolan, Director

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

Washington 25, D. C.
PREFACE

This report was prepared by the Geological Survey in cooperation 

with the States of Idaho, Nevada, Oregon, Utah, Washington, and 

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

Resources Division, C. G. Paulsen, chief, succeeded by L. B. Leopold, 

under the general direction of J. V. B. Wells, chief, Surface Water 

Branch, and B. J. Peterson, chief, Basic Records Section, succeeded by 

F. J. Flynn.

The data were collected and computed under supervision of district 

engineers, Surface Water Branch, as follows:

F. M. Bell (succeeded by J. M. Terry) _____________Denver, Colo. 

Lynn Crandall________________________Idaho Falls, Idaho 

T. R. Newell____________________ ^______Boise, Idaho

K. N. Phillips___________________________Portland, Oreg. 

F. M. Veatch____________________________Tacoma, Wash. 

M. T. Wilson_______________________Salt Lake City, Utah

ni
CALENDAR FOR WATER YEAR 1956

OCTOBER 1955 NOVEMBER 1955

S

2

9

16

23

30

M

3

10

17

24

31

T W

4 5

11 12

18 19

25 26

JANUARY

S

1

8

15

22

29

M

2

9

16

23

30

T W

3 4

10 11

17 18

24 25

31

APRIL

S

1

8

15

22

29

S

1

8

15

22

29

M

2

9

16

23

30

M

2

9

16

23

30

T W

3 4

10 11

17 18

24 25

JULY

T W

3 4

10 11

17 18

24 25

31

T F

6 7

13 14

20 21

27 28

1956

T F

5 6

12 13

19 20

26 27

1956

T F

5 6

12 13

19 20

26 27

1956

T F

5 6

12 13

19 20

26 27

S

1

8

15

22

29

S

6

13

20

27

M

7

14

21

28

T

1

8

15

22

29

W

2

9

16

23

30

T

3

10

17

24

F

4

11

18

25

S

5

12

19

26

FEBRUARY 1956

S

7

14

21

28

S

5

12

19

26

M

6

13

20

27

T

7

14

21

28

W

1

8

15

22

29

T

2

9

16

23

F

3

10

17

24

S

4

11

18

25

MAY 1956

S

7

14

21

28

S

6

13

20

27

M

7

14

21

28

T

1

8

15

22

29

W

2

9

16

23

30

AUGUST

S

7

14

21

28

S

5

12

19

26

M

6

13

20

27

T

7

14

21

28

W

1

8

15

22

29

T

3

10

17

24

31

F

4

11

18

25

S

5

12

19

26

1956

T

2

9

16

23

30

F

3

10

17

24

31

S

4

11

18

25

DECEMBER 1955

S M T W T F S 

123

4 5 6 7 8 9 10 

11 12 13 14 15 16 17 

18 19 20 21 22 23 24 

25 26 27 28 29 30 31

MARCH 1956

S M T W T F S 

123

4 5 6 7 8 9 10 

11 12 13 14 15 16 17 

18 19 20 21 22 23 24 

25 26 27 28 29 30 31

JUNE 1956 

S M T W T F S

10 11 12 13 14 15 16

17 18 19 20 21 22 23

24 25 26 27 28 29 30

SEPTEMBER 1956

S M T "W T F S 

1

2345678

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30

IV
CONTENTS

Page 

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

Cooperation....................................................- ...-. 1

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

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

Downstream order of listing gaging stations.......................................... 3

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

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

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

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

Hydrologic conditions................................................................ 11^

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

Jackson Lake at Moran, Wyo......................................................... 14

Snake River at Moran, Wyo.......................................................... IS

Pacific Creek basin

-Pacific Creek near Moran, Wyo.................................................... 16

Buffalo Fork basin

Buffalo Fork near Moran, Wyo..................................................... 17

Gros Ventre River basin

Gros Ventre River at Kelly, Wyo.................................................. 18

Hobaek River basin

Hoback River near Jackson, Wyo................................................... 19

Snake River above reservoir, near Alpine, Wyo...................................... 20

Greys River basin

Greys River above reservoir, near Alpine , Wyo.................................... 21

Salt River basin

Salt River near Smoot, Wyo........................................................ 22

Cottonwood Creek near Smoot, Wyo............................................... 23

Swift Creek near Afton, Wyo.................................................... 24

Salt River above reservoir, near Etna, Wyo....................................... 25

MeCoy Creek basin

McCoy Creek above reservoir, near Alpine, Idaho.................................. 26

Indian Creek basin

Indian Creek above reservoir, near Alpine , Idaho................................. 27

Elk Creek basin

Elk Creek above reservoir, near Irwin, Idaho..................................... 28

Bear Creek basin

Bear Creek above reservoir, near Irwin, Idaho.................................... 29

Palisades Reservoir near Irwin, Idaho.............................................. 30

Snake River near Irwin, Idaho...................................................... 31

Snake River near Heise, Idaho...................................................... 32

Henrys Fork basin

Henrys Fork near Lake, Idaho..................................................... 33

Island Park Reservoir near Island Park, Idaho.................................... 34

Henrys Fork near Island park, Idaho.............................................. 35

Henrys Fork near Ashton, Idaho................................................... 36

Fall River:

Diversions from Pall River above gaging station near Squirrel, Idaho......... 37

Fall River near Squirrel, Idaho................................................ 37

Diversions from Fall River between Squirrel and Chester gaging stations,

Idaho ................................................................... 38

Fall River near Chester, Idaho................................................. 38

Diversions from Henrys Fork between Ashton and St. Anthony gaging stations,

Idaho.................................................................. 39

Henrys Fork at St. Anthony, Idaho................................................ 39

Teton River near Tetonia , Idaho................................................ 40

Teton River near St. Anthony, Idaho............................................ 41

Diversions from Teton River between St. Anthony gaging station and mouth,

Idaho.................................................................. 42

Diversions from Henrys Fork between St. Anthony and Rexburg gaging stations,

Idaho.................................................................... 42

Henrys Fork near Rexburg, Idaho.................................................. 43

Smaller -reservoirs in Henrys Fork basin.......................................... 44

Diversions from Snake River between Heise and Shelley gaging stations, Idaho..... 45

Snake River near Shelley, Idaho.................................................... 45

Blaekfoot River basin

Blackfoot River near Blackfoot, Idaho............................................ 46

Diversions from Snake River between Shelley and Blackfoot gaging stations, Idaho. 47 

Snake River near Blackfoot, Idaho.................................................. 47

Portneuf River basin

Portneuf River at Topaz , Idaho................................................... 48

Marsh Creek near McCammon, Idaho............................................... 49

Portneuf River at Pocatello, Idaho............................................... 50

Bannock Creek basin

Bannock Creek near Pocatello , Idaho.............................................. 51

American Falls Reservoir at American Falls, Idaho.................................. 52

Snake River at Neeley, Idaho ....................................................... 53

Rock Creek basin

Rock Creek near Rockland, Idaho.................................................. 54

Raft River basin

Raft River at Peterson Ranch, near Bridge, Idaho................................. 55

Clear Creek near Naf, Idaho.................................................... 56

Lake Walcott near Minidoka, Idaho.................................................. 57

V
VI CONTENTS

Gaging-station records Continued 

Snake River Continued

Diversions from Lake Waleott Page

North Side Minidoka Canal near Minidoka, Idaho................................... 58

South Side Minidoka Canal near Minidoka, Idaho................................... 59

Snake River near Minidoka, Idaho................................................... 60

Goose Creek basin

Goose Creek above Trapper Creek, near Oakley, Idaho.............................. 61

Trapper Creek near Oakley, Idaho............................................... 62

Oakley Reservoir near Oakley, Idaho.............................................. 63

Diversions from Snake River between Goose Creek and Snake River at Milner

P. A. lateral near Milner, Idaho................................................. 64

Milner low-lift canal near Milner, Idaho......................................... 65

Gooding Canal at Milner, Idaho................................................... 66

North Side Twin Palls Canal at Milner, Idaho..................................... 67

South Side Twin Palls Canal at Milner, Idaho..................................... 68

Snake River at Milner, Idaho....................................................... 69

Devils Washbowl Spring basin

Devils Washbowl Spring near Kimberly, Idaho...................................... 70

Snake River near Kimberly, Idaho................................................... 71

Blue Lakes Spring basin

Blue Lakes Spring near Twin Palls, Idaho......................................... 72

Rock Creek basin

Rock Creek near Rock Creek, Idaho................................................. 73

Cedar Draw basin

Cedar Draw near Filer, Idaho..................................................... 74

Snake River near Buhl, Idaho....................................................... 75

Deep Creek basin

Deep Creek near Buhl, Idaho...................................................... 76

Box Canyon Springs basin

Box Canyon Springs near Wendell, Idaho........................................... 77

Salmon Palls Creek basin

Salmon Falls Creek above upper Vineyard ditch, near Contact, Nev................. 78

Salmon Palls Creek near San Jacinto, Nev......................................... 79

Salmon River Canal Co. reservoir near Rogerson, Idaho............................ 80

Salmon River Canal Co. canal near Rogerson, Idaho.............................. 81

Salmon Palls Creek near Buhl, Idaho.............................................. 82

Mud Lake-Lost River basins Mud Lake: 

Camas Creek at Camas, Idaho.................................................. 83

Beaver Creek at Dubois, Idaho.............................................. 84

Beaver Creek at Camas, Idaho............................................... 85

Mud Lake near Terreton, Idaho.................................................. 86

Medicine Lodge Creek at Ellis Ranch, near Argora, Idaho........................ 87

Birch Creek near Reno, Idaho................................................... 88

Little Lost River near Howe, Idaho............................................. 90

Blaine County Investment Co.' s canal near Howe, Idaho........................ 91

Big Lost River at Wild Horse, near Chilly, Idaho............................... 92

Big Lost River at Howell Ranch, near Chilly, Idaho............................. 93

Big Lost River (east channel) above Mackay Reservoir, near Mackay, Idaho....... 94

Big Lost River (west channel) above Mackay Reservoir, near Mackay, Idaho....... 95

Warm Spring Creek (east channel) near Mackay, Idaho.......................... 96

Warm Spring Creek (west channel) near Mackay, Idaho.......................... 97

Surface inflow to Mackay Reservoir, near Mackay, Idaho......................... 98

Mackay Reservoir near Mackay, Idaho............................................ 99

Sharp ditch near Mackay, Idaho............................................... 100

Big Lost River below Mackay Reservoir, near Mackay, Idaho...................... 101

Big Lost River near Arco, Idaho................................................ 102

Riley Creek basin

Riley Creek: 

Lewis Spring:

Brailsford ditch near Hagerman, Idaho........................................ 103

Riley Creek below Lewis Spring, near Hagerman, Idaho............................. 104

Snake River below Lower Salmon Palls, near Hagerman, Idaho......................... 105

Ma lad Rivg'r basin

Big Wood River (head of Malad River) near Ketchum, Idaho......................... 106

Warm Springs Creek at Guyer Hot Springs, near Ketchum, Idaho................... 107

Big Wood Slough at Hailey, Idaho............................................... 108

Big Wood River at Hailey, Idaho.................................................. 109

Big Wood River near Bellevue, Idaho.............................................. Ill

Camas Creek near Blaine , Idaho........^........................................ 112

Magic Reservoir near Richfield, Idaho............................................ 113

Big Wood River below Magic Dam, near Richfield, Idaho............................ 114

Little Wood River at Campbell Ranch, near Carey, Idaho......................... 115

Little Wood Reservoir near Carey, Idaho........................................ 116

Little Wood River below reservoir, near Carey, Idaho........................... 117

Little Wood River near Carey, Idaho............................................ 118

Silver Creek near Picabo, Idaho.............................................. 119

Little Wood River near Richfield, Idaho........................................ 120

Little Wood River at Shoshone, Idaho............... ± ........................... 121

Malad River near Gooding, Idaho.................................................. 122

King Hill Canal near Hagerman, Idaho........................................... 123

Snake River at King Hill, Idaho.................................................... 124

Canyon Creek basin

Canyon Creek:

Mountain Home feeder canal near Mountain Home, Idaho........................... 125

Bruneau River basin

Bruneau River:

East Pork Jarbidge River near Three Creek, Idaho............................... 126

East Pork Bruneau River below Three Creek, near Three Creek, Idaho............. 127
CONTENTS VII

Gaging-station records--Continued 

Snake River Continued

Bruneau River basin Continued

East Fork Bruneau River near Hot Spring, Idaho................................. 128

Bruneau River near Hot Spring, Idaho............................................. 129

C. J. Strike Reservoir near Grand View , Idaho...................................... 130

Snake River near Murphy, Idaho..................................................... 130

Owyhee River basin

Wild Horse Reservoir near Gold Creek, Nev........................................ 131

Owyhee River near Gold Creek, Nev................................................ 132

Owyhee River above China diversion dam, near Owyhee, Nev......................... 133

South Fork Owyhee River near Whiterock, Nev.................................... 134

Jordan Creek above Lone Tree Creek, near Jordan Valley, Oreg................... 135

Owyhee River near Rome, Oreg..................................................... 136

Owyhee Reservoir at Owyhee Dam, near Nyssa, Oreg................................. 137

Owyhee River below Owyhee Dam, Oreg.............................................. 138

Boise River basin

Boise River near Twin Springs, Idaho ............................................. 139

South Fork Boise River near Featherville, Idaho................................ 140

Lime Creek near Bennett, Idaho ............................................... 141

Fall Creek near Anderson Ranch Dam, Idaho.................................... 142

Little Camas Creek:

Little Camas Canal at heading, near Bennett, Idaho......................... 143

Anderson Ranch Reservoir at Anderson Ranch Dam, Idaho.......................... 144

South Fork Boise River at Anderson Ranch Dam, Idaho............................ 145

Arrowrock Reservoir at Arrowrock, Idaho .......................................... 146

Boise River: 

Moore Creek:

Bannock Creek near Idaho City, Idaho......................................... 147

Moore Creek above Robie Creek, near Arrowrock, Idaho........................... 148

Robie Creek near Arrowrock, Idaho............................................ 149

Lucky Peak Reservoir near Boise, Idaho........................................... 150

Boise River near Boise , Idaho.................................................... 151

Lake Lowell near Caldwell, Idaho............................................... 152

Diversions from Boise River between near Boise and at Boise gaging stations,

Idaho.................................................................... 153

Boise River at Boise , Idaho...................................................... 154

Dry Creek:

Spring Valley Creek near Eagle , Idaho........................................ 155

Dry Creek near Eagle , Idaho.................................................... 156

Dry Creek at Eagle , Idaho...................................................... 157

Diversions from Boise River between Boise and Notus gaging stations, Idaho..... 158

Boise River at Notus, Idaho ...................................................... 159

Malheur River basin

Malheur River near Drewsey, Oreg................................................. 160

Malheur River below Warmsprings Reservoir, near Riverside, Oreg.................. 161

North Fork Malheur River above Agency Valley Reservoir, near Beulah, Oreg...... 163

North Fork Malheur River at Beulah, Oreg....................................... 164

Malheur River at Little Valley, near Hope, Oreg.................................. 165

Bully Creek near Vale, Oreg.................................................... 166

Reservoirs in Malheur River basin , Oreg.......................................... 16V

Payette River basin

South Fork Payette River at Lowman, Idaho........................................ 168

Deadwood Reservoir near Lowman, Idaho.......................................... 169

Deadwood River below Deadwood Reservoir, near Lowman, Idaho.................... 170

South Fork Payette River near Garden Valley, Idaho............................... 171

South Fork Payette River near Banks, Idaho....................................... 172

North Fork Payette River:

Payette Lake at McCall, Idaho.................................................. 173

North Fork Payette River at McCall, Idaho...................................... 174

Lake Fork Payette River above Jumbo Creek, near McCall, Idaho. ............... 175

Lake Fork Reservoir near McCall, Idaho....................................... 176

Lake Irrigation District Canal near McCall, Idaho,......................... 177

Lake Fork Payette River below Lake Irrigation District Canal, near McCall,

Idaho.................................................................. 178

Cascade Reservoir at Cascade , Idaho............................................ 179

North Fork Payette River at Cascade , Idaho..................................... 180

North Fork Payette River near Banks , Idaho..................................... 181

Payette River near Horseshoe Bend, Idaho......................................... 182

Payette River near Emmett, Idaho................................................. 183

Payette River near Payette , Idaho................................................ 184

Weiser River basin

Weiser River at Tamarack, Idaho.................................................. 185

West Fork Weiser River: 

Lost Creek: 

Lost Valley Reservoir near Tamarack, Idaho ................................... 186

Lost Creek near Tamarack, Idaho.............................................. 187

Weiser River near Cambridge, Idaho............................................... 188

Pine Creek near Cambridge, Idaho............................................... 189

Little Weiser River near Indian Valley, Idaho.................................. 190

Crane Creek Reservoir near Midvale, Idaho...................................... 191

Crane Creek near Midvale, Idaho................................................ 192

Crane Creek at mouth, near Weiser, Idaho....................................... 193

Weiser River near Weiser, Idaho.................................................. 194

Weiser Irrigation District Canal near Weiser, Idaho............................ 195

Mann Creek near Weiser, Idaho.................................................. 196

Snake River at Weiser , Idaho....................................................... 197

Burnt River basin

Burnt River:

Unity Reservoir near Unity, Oreg................................................. 198

Burnt River near Hereford , Oreg.................................................. 199
VIII CONTENTS

Gaging-station records Continued 

Snake River Continued

Powder River basin Page 

Powder River near Baker, Oreg.................................................... 200

Powder River near Robinette, Oreg................................................ 201

Snake River at Oxbow , Oreg......................................................... 202

Snake River near Joseph, Idaho..................................................... 203

Imnaha River basin

Imnaha River at Imnaha, Oreg..................................................... 204

Salmon River basin 

Salmon River: 

Valley Creek at Stanley, Idaho................................................. 205

Salmon River below Valley Creek, at Stanley, Idaho............................... 206

Salmon River below Yankee Fork, near Clayton, Idaho.............................. 207

Salmon River near Challis, Idaho................................................. 208

Challis Creek near Challis, Idaho.............................................. 209

Pahsimeroi River near May, Idaho............................................... 210

Salmon River at Salmon, Idaho.................................................... 211

Lemhi River: 

Texas Creek near Leadore, Idaho.............................................. 212

Lemhi River near Lemhi, Idaho.................................................. 213

Panther Creek near Shoup, Idaho................................................ 214

Salmon River near Shoup, Idaho................................................... 215

Middle Fork Salmon River near Cape Horn, Idaho................................. 216

Bear Valley Creek near Cape Horn, Idaho...................................... 217

Big Creek near Big Creek, Idaho.............................................. 218

South Fork Salmon River near Knox, Idaho....................................... 219

East Fork of South Fork Salmon River:

Johnson Creek at Yellow Pine, Idaho........................................ 220

Salmon River near French Creek, Idaho............................................ 221

Little Salmon River:

Mud Creek near Tamarack, Idaho............................................... 223

Salmon River at Whitebird, Idaho................................................. 224

Deer Creek near Winchester, Idaho............................................... 225

Grande Ronde River basin

Grande Ronde River near Hilgard, Oreg............................................ 226

Grande Ronde River at LaGrande, Oreg............................................. 227

Catherine Creek near Union, Oreg............................................... 228

Grande Ronde River near Elgin, Oreg.............................................. 229

Wallowa River:

East Fork Wallowa River near Joseph, Oreg.................................... 230

Wallowa Lake:

Diversions from Wallowa Lake, Oreg........................................... 231

Wallowa Lake near Joseph, Oreg................................................. 231

Wallowa River at Joseph, Oreg.................................................. 232

Hurricane Creek near Joseph, Oreg............................................ 233

Lostine River near Lostine, Oreg............................................. 234

Bear Creek near Wallowa, Oreg................................................ 235

Graride Ronde River at Rondowa, Oreg.............................................. 236

Grande Ronde River at Troy, Oreg................................................. 237

Asotin Creek basin

Asotin Creek near Asotin, Wash................................................... 238

Clear-water River basin 

Selway River (head of Clearwater River) near Lowell, Idaho....................... 239

Lochsa River near Lowell, Idaho. ........ . .-. .................................... 240

Middle Fork Clearwater River (continuation of"Selway River):

South Fork Clearwater River near Elk City, Idaho............................... 241

South Fork Clearwater River near Grangeville, Idaho............................ 242

Clearwater River at Kamiah, Idaho................................................ 243

North Fork Clearwater River at Bungalow ranger station, Idaho.................. 244

North Fork Clearwater River near Ahsahka, Idaho................................ 245

Potlatch Creek at Kendrick, Idaho.............................................. 246

Clearwater River at Spalding, Idaho.............................................. 247

Snake River near Clarkston, Wash.'. ................................................. 248

Palouse River basin

Palouse River near Colfax, Wash.................................................. 249

Union Flat Creek near Colfax, Wash............................................. 250

Palouse River at Hooper, Wash.................................................... 251

Cow Creek:

Williams Lake near Amber , Wash............................................... 252

Miscellaneous discharge measurements ................................................. 253

Index................................................................................ 257

ILLUSTRATIONS

Page

Figure 1. Gaging-station structures: A, Snake River at King Hill, Idaho; B, North 

Fork Payette River near Banks, Idaho; C_, Snake River near Clarlcston, 

Wash.................................................................... 4

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

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

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

with median discharge for 25-year period................................ 13
SURFACE WATER SUPPLY OF SNAKE RIVER BASIN, 1956

SCOPE OF WORK

This volume is one of a series of 18 reports presenting measurements of stage, discharge, 

and content of streams, lakes, and reservoirs in the United States during the water year 

ending September 30, 1956. Since 1888, when the United States Geological Survey first 

studied streamflovi in relation to problems of irrigation, similar measurements have been 

made at more than 13,500 gaging stations in the 48 States and at many others in the Territories of Alaska and Hawaii. On September 30, 1956, the Geological Survey and cooperating 

organizations were maintaining 6,910 gaging stations, including those in Alaska and Hawaii.

Discharge measurements only were made at many other points in the 1956 water year. The

^ 

name of each stream measured at points other than gaging stations is not listed in the

index of this report. Only the major river basins in which measurements were made are 

listed under the item "Discharge measurements" in the index.

COOPERATION

Many State, municipal, and private organizations have cooperated with 1 the Geological 

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

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

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

Idaho: Idaho Department of Reclamation, M. R. Kulp, State reclamation engineer; 

Idaho State Fish and Game Commission, Ross Leonard, director; and Crane Creek Administration Board, E. W Horner, secretary.

Nevada: Office of the State Engineer, H. A. Shamberger.

Oregon: Office of the State Engineer, L. A. Stanley, and State Highway Commission, 

B. R. Chandler, chairman.

Utah: Office of the State Engineer, J. M. Tracy.

Washington: State Department of Conservation and Development, W. A. Galbraith, 

director, and Division of Water Resources, M. G. Walker, supervisor.

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

Assistance in the form of funds or services was given by the Corps of Engineers, Department of the Army, in collecting records published herein for 20 gaging stations, of which 

12 were in Idaho, 3 in Oregon, 1 in Washington, and 4 in Wyoming.

Assistance was also furnished by the Soil Conservation Service of the Department of 

Agriculture; by the Bonneville Power Administration, and the Bureau of Reclamation of the 

United States Department of the Interior; and by the Atomic Energy Commission. 

The following organizations aided in collecting records:

Idaho: Board of Control for Boise Project; Idaho Power Co., Idaho Water 

District 36, North Side Canal Co., Twin Palls Canal Co., Utah Power & Light Co., 

Washington Water Power Co., Pacific Northwest Power Co., American Falls Reservoir 

District 2, and watermasters for Big Lost, Little Lost, Big Wood, Little Wood, 

Boise, and Lake Fork Payette Rivers, and Mud Lake.

Oregon: Baker, Malheur, Union, and Wallowa Counties; Pacific Power & Light
2 SURFACE WATER SUPPLY, 1956, PART 13

Co., and Warmsprings Irrigation District. 

Washington: Washington Water Power Co.

DIVISION OF WORK

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

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

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

listed below.

State District office Address

Idaho a/-.................. Boise ......................... 914 Jefferson Street.

Idaho b/................... Idaho Palls................... 204 Federal Building.

Nevada c/.................. Salt Lake City, Utah.......... 300 Federal Building.

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

Utah e/7................... Salt Lake City................ 300 Federal Building.

Washington................. Tacoma........................ 207 Federal Building.

Wyoming f/................. Denver, Colo.................. Denver Federal Center.

a/ Except stations on Snake River between Irwin and Milner, stations on tributaries of Snake 

River above American Palls Reservoir, diversions from Snake River at and above Milner, and Clear 

Creek near Naf, but including Salmon Palls Creek above upper Vineyard ditch, near Contact, Nev., 

Salmon Falls Creek near San Jaointo, Nev., Snake River at Oxbow, Oreg., and Pacific Creek near 

Moran, Wyo., Buffalo Pork near Moran, Wyo., Gros Ventre River at Kelly, Wyo., and Hoback River 

near Jackson, Wyo.

b/ Stations on Snake River between Irwin and Milner, stations on tributaries of Snake River above 

American Falls Reservoir, diversions from Snake River at and above Milner, and Grassy Lake, Greys 

River above reservoir, near Alpine, Wyo., Jackson Lake at Moran, Wyo., Salt River above reservoir, 

near Etna, Wyo., and Snake River at Moran and above reservoir near Alpine, Wyo.

e/ Except for Salmon Palls Creek above upper vineyard ditch, near Contact and near San Jacinto.

d/ Except for Snake River at Oxbow.

e/ Clear Creek near Naf, Idaho.

f/ Except for Pacific Creek near Moran, Buffalo Pork near Moran, Gros Ventre River at Kelly, 

Hoback River near Jackson, Grassy Lake, Greys River above reservoir, near Alpine, Wyo., Jackson 

Lake at Moran, Wyo., Salt River above reservoir, near Etna, Wyo., and Snake River at Moran and 

above reservoir near Alpine.

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

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

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

DEFINITION OF TERMS AND ABBREVIATIONS

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

as follows:

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

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

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

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

is distributed uniformly in time and area.

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

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

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

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

irrigation.

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

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

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

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

flowing in a channel, expressed as volume per unit of time.
EXPLANATION OF DATA 3

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

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

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

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

The drainage area of a stream at a specified location is that area, measured in a 

horizontal plane, which is so enclosed by a topographic divide that direct surface runoff from precipitation normally would drain by gravity into the river above the specified 

point. Figures of drainage area given herein include all closed basins, or noncontributing areas, within the area unless otherwise noted.

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

published reports.

DOWNSTREAM ORDER OF LISTING GAGING STATIONS

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

order of listing gaging-station records was changed. In this report, in a downstream direction along the main stem all stations on a tributary entering above a main-stem station are listed before that station. If a tributary enters between two main-stem stations, it is listed between them. A similar order is followed in listing stations on 

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

tributary on which a gaging station l^s situated and the stream to which it is immediately 

tributary, each indention in the listing of gaging stations in the table of contents of 

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

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

the tributary on which each gaging station is situated.

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

stations on the main stem from headwaters toward mouth, then all stations on the uppermost tributary to the main stem from the tributary's source to mouth, and then all stations from source to mouth of the uppermost tributary to the tributary.

EXPLANATION OF DATA

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

of discharge. In addition, observations of factors affecting the stage-discharge relation, weather records, and other information are used to supplement base data in determining the daily flow. The records of stage are obtained either from direct readings on a 

nonrecording gage or from a water-stage recorder that gives a continuous record of fluctuations. Measurements of discharge are made with a current meter by the general methods 

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

These methods are described in Water-Supply Paper 888 and are also outlined in standard 

textbooks on the measurement of stream discharge. Typical structures in use at gaging 

stations are shown in figure 1.

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

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

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

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

A, SNAKE RIVER AT KING HILL, IDAHO

B, NORTH FORK PAYETTE RIVER NEAR BANKS, IDAHO

C, SNAKE RIVER NEAR CLARKSTON, WASH.

FIGURE 1. GAGING-STATION STRUCTURES
EXPLANATION OP DATA 5

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

tables gives the daily mean discharge, from which the monthly and the yearly mean discharge are computed. If the stage-discharge relation is subject to change because of 

frequent or continual change in the physical features that form the control, the daily 

mean discharge is determined by the shifting-control method, in which correction factors 

based on individual discharge'measurements and notes by engineers and observers are used 

in applying the gage heights to the rating tables. If the stage-discharge relation for a. 

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

the daily mean discharge is computed by what is essentially the shift ing-control method.

At some gaging stations the stage-discharge relation is affected by backwater from reservoirs, tributary streams, or other sources. This necessitates the use of the slope 

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

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

used as a factor in the determination of discharge.

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

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

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

occasional winter discharge measurements, consideration being given to the available information on temperature and precipitation, notes by gage observers and engineers, and comparable records of discharge for other stations in the same of nearby basins. If the 

stage-discharge relation is affected by ice, this information is given in a note to the 

table. No mention is made of occasional days of ice effect if the degree of accuracy of 

daily records is not changed.

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

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

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

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

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

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

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

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

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

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

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

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

site. Under "Gage" are given the type of gage currently in use and the datum of the present gage above mean sea level, and a condensed history of the types, locations, and datums 

of previous gages used during the period of records available. Under "Average discharge" 

is given the average discharge for the number of years indicated. It is not given for 

stations having fewer than five complete years of record or for stations where changes in 

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

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

there is little or no regulation; the minimum daily discharge if there is extensive
6 SURFACE WATER SUPPLY, 1956, PART 13

regulation (also the minimum discharge if useful); and the minimum gage height (unless it 

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

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

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

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

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

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

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

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

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

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

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

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

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

water years only one number is given; for instance, 1933 stands for the water year October 1, 1932, to September 30, 1933. If no daily, monthly, or annual figures of discharge 

are concerned in the revisions, that fact is brought out by notations after the year dates 

as follows: "(M)" means that only the instantaneous maximum discharge was revised; "(m)" 

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

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

was first published is given. It should be noted that for all stations for which cubic 

feet per second per square mile and runoff in inches are published, a revision of the 

drainage area necessitates corresponding revision of all figures based on the drainage 

area. Revised figures of cubic feet per second per square mile and runoff in inches resulting from a revision of the drainage area only are usually not published in the annual 

series of reports.

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

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

not published for stations on canals.

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

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

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

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

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

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

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

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

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

readings, or to the mean gage height determined from gage-height graphs based on gage
ACCURACY OP FIELD DATA AND COMPUTED RESULTS 7

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

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

station description.

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

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

first day of its occurrence.

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

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

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

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

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

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

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

usually less than 20 inches.

>.

In the yearly summary below the monthly summary, the figures of maximum are the maximum daily discharges, not the momentary discharge when the water was at crest stage. 

Likewise, the minimums in this summary are the minimum daily discharges.

Peak discharges and the times of their occurrence and corresponding gage heights of 

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

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

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

peaks are subject to substantial control by man.

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

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

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

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

they were made at frequent regular intervals, in which instance the general frequency of 

discharge measurements is given under "Remarks" in the station description.

For most gaging stations on lakes and reservoirs the data presented comprise a description of the station and a monthly summary table of stage and contents. For some reservoirs a table showing daily contents or stage is given. A skeleton table of capacity at 

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

a daily basis (whether the daily figures are figures of stage or contents) but is not published for reservoirs for which only monthly data are given.

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

stations are listed at the end of each report.

ACCURACY OF FIELD DATA AND COMPUTED RESULTS

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

The station description states the degree of accuracy of the records. "Excellent" indicates that, in general, the error in the daily records is believed to be less than 

5 percent; "good," less than 10 percent; "fair," less than 15 percent; and "poor," probably more than 15 percent. The records of monthly and yearly mean discharge and runoff
8 SURFACE WATER SUPPLY, 1956, PART 13

are, in general, more nearly accurate than the daily records.

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

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

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

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

or for other changes incident to use and control. Evaporation from a reservoir is not ineluded in the adjustments for changes in reservoir contents, unless it is so stated. Even 

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

when relatively large negative adjustments are made or when evaporation is large in comparison with the observed discharge.

Many gaging stations on streams in the irrigated areas of the United States are situated above most of the diversions from those streams, and therefore the discharge recorded 

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

because water must first be supplied to existing irrigation systems.

PUBLICATIONS

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

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

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

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

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

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

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

A, North Atlantic slope basins, Maine to Connecticut. 

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

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

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

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

to Pearl River.

3. Ohio River basin, in two volumes:

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

B, Cumberland and Tennessee River basins.

4. St. Lawrence River basin.

5. Hudson Bay and upper Mississippi River basins.

6. Missouri River basin, in two volumes;

A, Missouri River basin above Sioux City, Iowa. 

B, Missouri River basin below Sioux City, Iowa.

7. Lower Mississippi River basin.

8. Western Gulf of Mexico basins.

9. Colorado River basin.

10. The Great Basin.

11. Pacific slope basins in California.

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

13. Snake River basin.

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

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

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

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

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

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

Geological Survey, Washington, D. C.

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

the United States.

3. Sets are available for consultation in the offices of the Water Resources Division 

of the Geological Survey. Addresses of the offices in the area covered by this report are 

given on page 2.
PUBLICATIONS

467239 O-58 2
10 SURFACE WATER SUPPLY, 1956, PART 13

Early records of the flow of streams in the United States are published in the reports 

listed below. In many of these reports records for years earlier than those indicated 

have been included for some streams.

Streamflow data for the years 1844-1901, In reports of the Geological Survey 

(A = Annual Report; B = Bulletin)

Report

10th A, pt. 2 

llth A, pt. 2

16th A, pt. 2

16th A, pt. 4

19th A, pt. 4

WSP 65, 66.. . 

WSP 75.. .....

Character of data

Descriptive Information only. 

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

Descriptive Information only.

monthly discharge.

Descriptions, measurements ratings, and monthly discharge..

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

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

Descriptions, measurements, ratings, and monthly discharge.

the Mississippi River, and Missouri River and tributaries.

the Mississippi River, except Missouri River and tributaries.

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

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

Year

1884 to September 1890.

1884-92.

1888-93.

1896.

1895-96.

1897.

1898.

1901. 

1901.

Note. Records for all stations In Oregon are contained In WSP 370, superseding all reports In 

this table for these stations.

Reports on surface-water supply containing records from 1899 to date for drainage 

basins in this report are listed below. The data for any particular gaging station will, 

in general, be found in the reports covering the years during which the station was maintained.

Numbers of water-supply papers containing results of stream measurements In Snake River basin,

1899-1956

Year

1899

1900

1901

1902

1903

1904

1905

1906

1907-6

1909

1910

1911

WSP

38

51

66, 75

65

100

135

176

214

252

272

292

312

Year

1912

1913

1914

1915

1916

1917

1916

1919-20

1921

1922

1923

1924

WSP

332 -B

36 2 -B

393

413

443

463

483

513

533

553

573

593

Year

1925

1926

1927

1928

1929

1930

1931

1932

1933

1934

1935

1936

WSP

613

633

653

673

693

708

723

736

753

766

793

813

Year

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

WSP

833

863

883

903

933

963

983

1013

1043

1063

1093

1123

Year

1949

1950

1951

1952

1953

1954

1955

1956

WSP

1153

1183

1217

1247

1287

1347

1397

1447

Note. Records for all stations In Oregon through September 191O are contained In WSP 37O, superseding all earlier reports for these stations.

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

Discharge measurements at many points other than regular gaging stations have been made 

each year and are published at the end of each report. The streams and points of measurement are listed in the same order as the streams and gaging stations in the body of the 

report. An index of the records obtained before 1904 has been published in Water-Supply 

Paper 119.

A compilation of records for the area covered by this report through September 1950 has 

been published as Water-Supply Paper 1317. That report contains a summary of monthly and 

annual discharges for all previously published records as well as some records not contained in the annual series of water-supply papers. All records were reexamined and revised 

where warranted. Estimates of discharge were made to fill short gaps whenever practical.

Records of discharge have been published also in State reports. Most of these records 

are also compiled in Water-Supply Paper 1317; however some of them are not contained in
HYDROLOGIC CONDITIONS 11

the publications of- the Geological Survey. The following table contains a list of these 

reports for the area covered by this report.

State reports containing compilations of records of discharge

State

Do.. ......

Utah. ........

Washington. . .

Period

1878-1914

1914-24 

1924-30 

1930-36 

1936-41 

1889-1905 

1906-10 

1911-16 

1878-1953

Report

Bull. 4, Water resources of tfie State of Oregon..

Bull. 7, Water resources of the State of Oregon.. 

Bull. 8, Water resources of the State of Oregon.. 

Bull. 9., Water resources of the State of Oregon.. 

Bull. 10, Water resources of the State of Oregon. 

5t h biennial report ..............................

Bull. 6, Monthly and yearly summaries of hydrometric data.

Issued by

Office of the State Engineer. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Department of Conservation and Development.

Note. In addition to the records contained in the reports listed above, the States of Idaho, Nevada, Oregon, Washington, and Wyoming have Issued annual or biennial reports in which are contained 

records of discharge.

The reports listed in the foregoing tables contain the customary records of discharge 

collected during the systematic operation of gaging stations. Detailed information oft 

the stage and discharge of many streams during major floods has been included in special 

reports on these floods published by the Geological Survey. The more recent of these special reports also contain other pertinent hydrologic information and analyses and compilations of data relating to earlier notable floods. The following list gives the numbers 

and titles of these reports:

Report

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

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

WSP 1080; Floods of May-June 1948 in Columbia River basin.

RECORDS OK DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY 

The table below contains a list of gaging stations for the area covered by this report, 

at which records of discharge were collected during the water year October 1954 to September 1956 by agencies other than the Geological Survey. The records of these stations are 

not contained in publications of the Geological Survey, nor have they been published elsewhere .

Records of discharge collected by agencies other than the Geological Survey

Stream

American Palls Reservoir, 

inflow to. 

Burnt River, South Pork. .

Snake River tributaries.. 

Teton basin tributaries.. 

Wolf Creek. ..............

Location

Near American Palls, liaho. .......

SE-J sec. 14, T. 13 3. , R. 36 E. , 

above Whlted Reservoir, 3^ miles 

west of Unity, Dreg.

near Hamorf, Or eg. 

Near Irwin, Idaho. ................ 

Near Drlggs, Idaho. ...............

SEj sec. 11, T. 6 S. , R. 38 E. , 

5 miles northwest jof North 

Powder, Dreg, and 65 miles upstream from mouth..

Period

1927-28, 

1932-56 

1951-56

1931-56t

1940-56* 

1934-56* 

1953-56t

Collected by

Idaho Water District 

Oregon State englnee

Do.

Idaho Water District 

Do. 

Soil Conservation 

Service.

36. 

36.

t Records for some earlier years published in water-supply papers of the Geological Survey.

* Fragmentary.

Note. Of the records for the stations operated by the Oregon State engineer, those for 1931-36 

(including some to December 1936) are published In Bulletin 9 of the State engineer and those for 

1937-41 in Bulletin 10; those for 1942-54 have not been published. Records for the stations operated by Idaho Water District 36 are published in the annual reports of that organicatlon. Records 

for some canals, not listed above, have been collected by the Oregon State engineer and the Bureau 

of Reclamation in connection with the water supply for irrigation and other projects.

HYDROLOGIC CONDITIONS

The water year 1956 was characterized by excessive runoff over most of the area covered 

by this report. In Idaho an extremely heavy snow pack accumulated which resulted in a 

fairly high, steady runoff from the time of the snowmelt period until late summer. During 

December heavy precipitation fell on snow, during a period of unseasonal high temperatures, which caused floods of short duration reaching maximum flow Dec. 22, 23. The 

Payette, Weiser, and Boise River basins were hardest hit. Runoff at many of the stations 

exceeded any previous runoff for December anl several stations reached maximum flows of 

record. Tributaries to the Salmon and Clearwater Rivers were in flood during December but 

with less marked maximums. Runoff of Snake River near Heise, Idaho, was second highest of
12 SURFACE WATER SUPPLY, 1956, PART 13

record for December. During the December flood, Little Wood River at Campbell Ranch, near 

Carey, Weiser River at Tamarack, and Weiser River near Weiser and other tributaries were 

highest of record. Boise River near Twin Springs equalled the previous maximum, and Payette River stations near Horseshoe Bend, near Etnmett, and at Payette nearly equalled previous maxima even though storage in Cascade Reservoir reduced flow very materially. During January the Bruneau, Owyhee and Snake Rivers rose to high levels and the Snake River 

near Heise was second highest of record for January. These floods will be described in a 

water-supply paper entitled, "Floods of December 1955 - January 1956 in far western 

States," now in preparation. During March flooding occurred in the lower Big Lost River 

basin and in the Carey area as a result of melting snow on frozen ground. Peak discharge 

of record occurred in Big Lost River near Arco, Idaho, Mar. 23. The highest discharge of 

record occurred along the main stem of Salmon River and on many Salmon River tributaries 

during period May 24-27. Flooding occurred also in May from snowmelt along the Snake 

River between Heise and Roberts, Idaho. Swollen small creeks caused temporary flooding of 

Lewiston, Idaho, streets the night of Aug. 25. For two key gaging stations in the area 

covered by this report, a comparison of the monthly and annual mean discharge during the 

1956 water year with the median discharge for the 25-year period 1921-45 is shown in figure 3 on the following page.
HYDROLOGIC CONDITIONS 13

30,000

26,000

20,000

15,000

10,000

6000

Snake River near Heise, Idaho 

Drainage area, 5,752 sq mi.

Oct. Nov. Dec. Jan. Feb, Mar. April June July Aug. Sept. The 

year

40,000 

fl

 9 30,000

20,000

10,000

Salmon River at Whitebird, Idaho 

Drainage area, 13,550 sq mi. 52,900

i r raBol

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

year

Explanation

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

Monthly mean discharge during water year 1956.

Figure 3. Comparison of discharge at two key gaging stations during 1956 water year with 

median discharge for 25-year period.
14 SNAKE RIVER MAIN STEM

Jackson Lake at Koran, Wyo.

Location. Lat 43°51', long 110°35', in sec. 18, T. 45 N., R. 114 W., near left end of 

spillway over dam on Snake River at Koran.

Drainage area. 824 sq mi.

Records available. July 1908 to September 1956 (1908-10 fragmentary).

Gage.. Electric tape gage read once daily. Datum of gage is 2.19 ft above mean sea level, 

unadjusted. Prior to June 1, 1941, staff gage at site 300 ft upstream at same datum.

Extremes. Maximum contents during year, 849,790 acre-ft July 3, 4, 8 (elevation, 

6,769.11 ft); minimum, 193,620 acre-ft Oct. 1 (elevation, 6,740.56 ft).

1908-56: Maximum contents, 857,220 acre-ft June 23, 1937 (elevation, 6,769.40 ft); 

no usable contents on several days during period August to October 1919.

Remarks. Reservoir was formed by log crib dam in 1906 with a usable capacity of 300,000 

acre-ft. This dam washed out in July 1910 and was replaced by an earth dam,'forming 

a reservoir with a usable capacity of 380,000 acre-ft. The earth dam was raised in 

1916, increasing the usable capacity to 790,000 acre-ft. In 1917, by dredging the 

outlet, the capacity was further increased to 847,000 acre-ft between elevations 

6,730 ft (top of baffles to sluices) and 6,769 ft (top of spillway gates). Water is 

used for irrigation in Snake River Valley, Idaho. Contents as given herein are for 

8 a.m.; all available for release.

Cooperation. Reservoir elevation and capacity table furnished by Bureau of Reclamation. 

Revisions. WSP 1217: Drainage area.

Contents, in acre-feet, at 8 a.m., water year October 1955 to September 1956

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18

19 

20

21 

22 

23

24 

25

26 

27 

28 

29 

30 

31

111

Oct.

193,620

194,410 

195,400 

196,190 

196,780

197,970 

198,570 

199,360 

200, 350 

200,940

201,740 

202,530 

203,340 

204,140 

204,940

205, 750 

206,550 

207,360 

208,360 

209,570

210,570 

212,380 

213,790 

214,590 

215,600

216,400 

217,610 

218,620 

220,020 

221,030 

222,430

6,742 .00 

+29,610

Nov.

223,660

224,470 

225,090 

225, 700 

226,920

227,940 

228,760 

229,370 

229,980 

231,000

232,430 

233,450 

234,260 

235,900 

236,510

236,920 

237,530 

238,340 

240,180 

242, 220

244,690 

246,140 

247,170 

248,000 

248,830

250,270 

252,130 

253,580 

254,820 

255,860

6,743.63 

+33,430

Dec.

257,100

258,130 

259,780 

261,020 

261,850

263,090 

264,550 

265, 600 

266,360 

267,900

268,950 

270,210 

271,880 

272,720 

273,350

274,400 

276,490 

277,330 

279,210 

28O,68O

282,770 

284,450 

288,900 

292,930 

295,480

298,450 

30O 990 

3O2,O5O 

302, 900 

304,180 

305,660

6,746.00 

+49, 800

Jan.

307,590

309,090 

311,020 

312,530 

313,810

315,530 

316,820 

318,110 

318,970 

319,820

320,680 

321,540 

322,610 

324, 760 

326,690

330,810 

331,890 

332,760 

334,060 

335, 370

336,230 

337,320 

339,490 

341,010 

342,090

343,180 

346,650 

347,740 

348, 390 

349,480 

350,360

6,748.07 

+44, 700

Feb.

351,010

351, 670 

352,110 

352,770 

353, 640

354, 300 

354, 960 

355,840 

356,500 

357,370

358,690 

360,660 

362,420 

363,730 

364..610

365,270 

366,140 

366,800 

367,460 

368,340

370,530 

372,080 

373,410 

374,290 

375, 620

376,510 

377,620 

378,720 

379,830

_______

6,749.41 

+29,470

Mar.

381,380 

382,930 

383,820 

386,030 

387,580

388,470 

389,130 

390,240 

391,350 

392,460

393,120

393,120 

392,240 

391,570 

389,360

387,140 

383,820 

381,600 

380,270 

377,840

375, 620 

373,850 

371,640 

366,800 

361,100

355,620 

349,920 

344,480 

337,750 

331,680 

325,190

6,746.91 

-54, 640

Apr.

320,040

315,530 

309,740 

303, 960 

298,020

292, 72O 

287,000 

28O,89O 

275,230 

269,370

263,920 

257,920 

252,340 

246,550 

240,990

235,690 

230,800 

225,900 

221,430 

220, 630

223,050 

226,510 

230,590 

234,670 

238,950

243,450 

247,790 

252, 340 

256,060 

258,540

6,743.76 

66,650

May

259,990

260,400 

261, O2O 

261,850 

263,710

266,860 

269,370 

273,350 

277,120 

278,380

278,380 

276,910 

272,300 

266,230 

260,820

255, 650 

252,130 

251,310 

255,650 

266,440

282,360 

299,300 

323,470 

346,650 

369,000

392,240 

417,520 

439,410 

461,930 

483,470 

503,550

6,754.87 

+345.O1O

June

525,840

552,020 

574,630 

594, 780 

612,650

628,680 

-640,470 

647,680 

656,150 

664,870

680,420 

698,970 

714,440 

728,980 

743, 320

758,740 

770,440 

778,710 

790,000 

800,560

810,410 

817,990 

822,800 

827,630 

838,830

846,210 

848,760 

849,280

849,280 

849,280

6,769.09 

+345, 730

July

849,020 

849,280 

849, 790

849,790 

849,530

849,280 

849,280 

849,790 

849,280 

848,510

847,230 

846,210 

844,170 

841,880 

839,340

836,030 

831,700 

826,870 

821,520 

815,210

808,390 

801,570 

794,760 

788,490 

782,470

776,200 

769,940 

763,220 

756,240 

750,270 

743,320

6,764.88 

-005, 960

Aug.

736,400

729,720 

724,030 

717,880 

711,740

706, O9O 

701,420 

693,830 

687,250 

680, 670

673,350 

666,320 

660,510 

653,730 

647,440

640, 950 

634, 700 

628,680 

622.EOO 

615,520

609,310 

601,660 

590,980 

584,340 

575,570

566,380 

556,960 

548,980 

541,720 

534,470 

527, 23C

6,755.89 

-216,090

Sept.

519,800

512,590 

503, 780 

495, 700 

487,390

478,430 

469,260 

460,550 

452, 600 

444, 640

437,360 

431,050 

424, 730 

418,640 

414,360

410,120 

407,210 

404,080 

40O, 73O 

395,580

390,680 

384,040 

379,170 

374,520 

371,190

367,900 

366.580 

367,240 

368,560 

369,650

6,748 . 95 

-157,580

Calendar year 1955.................... * -65,020

Water year 1954-55.................... * +176,830

t Elevation, In feet, at end of month.
SNAKE RIVER MAIN STEM 15

Snake Elver at Moran, Wyo.

Location. Lat 43°51, long 110°35', in see. 18, T. 45 N., R. 114 W. , on left bank at 

Moran, 1,000 ft downstream from Jackson Lake Dam.

Drainage area. 824 sq mi.

Records available. September 1903 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317. Prior to October 1910, published as South Fork Snake 

River at Moran.

Gage. Water-stage recorder. Datum of gage is 6,727.84 ft above mean sea level, unadjusted. Prior to July 26, 1915, staff gage at datum 4.00 ft lower, July 26, 1915, to 

June 13, 1917, staff gage at datum 5.00 ft lower, and June 14, 1917, to May 20, 1940, 

water-stage recorder at datum 5.00 ft lower, all at site 1-| miles downstream.

Average discharge. 53 years, 1,440 cfs (1,043,000 acre-ft per year).

Extremes.--Maximum discharge during year, 6,250 cfs Aug. 26 (gage height, 7.93 ft); minimum daily, 16 cfs Oct. 27 to Mar. 9.

1903-56: Maximum discharge, 15,100 cfs June 12, 1918 (gage height, 10.41 ft, site 

and datum then in use); minimum daily, 2 cfs Nov. 21, 1944 to Apr. 14, 1945.

Flood during early June 1894 probably was considerably higher than that of June 12, 

1918.

Remarks.--Records excellent. Flow regulated by Jackson Lake (see preceding page).

Cooperation. Gage-height record furnished by Bureau of Reclamation.

Revisions (water years).--WSP 1217: 1944(M); drainage area. WSP 1347: 1906-10.

Rating table, water year 1955-56j (gage height, in feet, 

and discharge, in cubic feet per second)

1.1 

1.3 

1.6

2.0

3.0 

3.5 

4.0

860

1,210

2,110

3,250

4,670

6,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

1

2

3

4

5

6

7

8

9

30 

31

Total

Mean

Ac- ft

Oct.

25

24

23

23

2L

2Z

21

21

20

20

20

2 Li

19

19

19

18

18

18

18

17

17

17

17

17

17

17

16

16

16

16

16

589

19.0

1,170

Nov.

16

16

16

16

16

16

16

16

Dec.

16

16

16

16

16

16

16

16

*16 1 16

16 1 16

16 16

16 16

16 1 16

16 | 16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

480

16.0

952

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

496

16.0

984

Jan.

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

496

16.0

984

Feb.

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

464

16.0

920

Mar.

16

16

16

16

16

16

16

16

16

252

571

1,000

1 , 4OO

1 , 620

1,620

1,600

1,570

1,560

1,550

1,550

1,590

1,630

*2,400

3,480

3,500

3,510

3,460

3,500

3,640

3,600

3,580

48,307

1,558

95,820

Apr.

3.550

3,520

3,500

3,480

3,510

3,470

3,480

3,550

3,520

3,500

3,480

3,500

5,470

3,460

3,540

3,510

3,510

5,480

2,720

518

68

68

70

74

76

76

76

82

639

979

68,476

2,283

135,800

May

1,35O

1,770

1,770

1,780

1,780

1,790

1,800

2,070

3,030

5,O4O

5,010

5,350

5,570

6,130

6,080

6.180

6,110

5,160

3,200

1,700

92

86

84

84

82_

82

86

88

90

90

90

73,624

2,375

146,000

June

90

971

1,620

2,140

2,560

2,900

4,200

5,040

5,040

3,650

1,490

2,160

2,510

2,220

1,080

1,080

1,080

1,080

1,260

2,150

2,160

2,380

1,520

1,000

1,340

3,010

4,680

5,490

4,900

4,880

75,681

2,523

150,100

July

4,670

3,130

4,670

3,430

3,390

*3,290

2.880

3,290

3,540

3,520

3,560

3,750

3,740

3,740

3,960

4,540

4,550

4,740

5,190

5.810

5,770

5,570

5,280

5,270

5,240

5,200

5,190

5,360

5,440

5,160

5,030

137,900

4,448

273,500

Aug.

4,900

4,680

4,560

4,370

4,360

4,320

*4,370

4,580

4,730

4,680

4,670

4,660

4,64,0

4,600

4,550

4,340

4,320

4, 500

4,380

4,420

4,660

5,280

5,770

5,770

5,910

6,220

5,810

5,110

4,880

*4,620

4,700

149,160

4,812

295,900

Sept.

5,000

5,080

5,080

5,190

5,540

5.740

5,510

5,220

5,170

4,850

4,600

4,490

4,120

3,350

2,840

2,640

2,240

2,290

3,080

3,650

3,590

3,320

3,200

2,610

1,940

1,780

1,070

33

32

30

103,285

3,443

204,900

Calendar year 1955 : Max 7,380 Min 7 Mean 1,412 Ac-ft 1,022,000

Water year 1955-56: Max 6,220 Min 16 Mean 1,800 Ac-ft 1,307,000

* Discharge measurement made on this day.

Note.--Discharge computed from staff-gage readings Oct. 1 to Mar. 9.
16 PACIFIC CREEK BASIN

Pacific Creek near Moran, Wyo.

Location. Lat 43°51'00", long 110°3I<20", in sec. 23, T. 45 N., R. 114 W., on left 

bank 50 ft downstream from bridge on U. S. Highway 287, half a mile upstream from 

mouth, and 3 miles southeast of Moran.

Drainage area.--160 sq mi.

Records available.--July to November 1906 (gage heights only), July 1917 to September 

1918 (no winter records), September 1944 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 6,720 ft (from topographic map).

July 31 to Nov. 11, 1906, staff gage at site 0.4 mile downstream at different datum. 

July 20, 1917, to Sept. 30, 1918, staff gage at site 0.1 mile downstream at different 

datum.

Average discharge. 12 years (1944-56), 281 cfs (203,400 acre-ft per year).

Extremes. Maximum discharge during year, 3,410 cfs May 22; maximum gage height, 4.72 ft 

in gage well, about 5.3 ft from outside gage, May 22, 23; minimum daily discharge, 

31 cfs Mar. 12.

1917-18, 1944-56: Maximum discharge, 3,470 cfs May 21, 1954; maximum gage height, 

5.00 ft in gage well, 5.60 ft from outside gage May 28, 1951; minimum daily, 24 cfs 

Nov. 29, 1952, Jan. 21, 1954, Feb. 20-23, 1955.

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

which' are poor. No diversion or regulation.

Discharge, In cubic feet per second, water year October 1955 to Sepbembe

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

2829"

30 

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

59

58

57

57

JSQ.

58

55

54

54

53

55

55

53

54

53

52

52

51

51

54

55

58

56

51

49

49

49

50

47

50 

46

1,655

53.4

0.334

0.38

3,280

Nov.

39

35 *2i

39

41

38

39

40

40

43

43

41

37

40

38

35

36

38

42

47

5352"

50

49

49

52

50

51

49

52

1,292

43.1

0.269

0.30

2,560

Dec.

52

53

*50

46

45

50

50

45

48

50

48

47

45

42

i°

47

52

54

54

56

60

60

85

160

150

130

115

90

80

65 

75

2,O44

65.9

0.412

0.48

4,050

Jan.

65

75

60

85

66

70

70

56

60

54

54

64

66

60

64

68

57

*62

64

60

56

58

58

54

50

50

50

50

49

48

li

1,847

59.6

0.372

0.43

3,660

Feb.

38

32

35

38

40

42

40

38

36

38

4O

4O

41

37

37

33

35

36

37

37

37

37

39

37

36

*35

35

38

40

1,O84

37.4

0.234

0.25

2,150

Mar.

37

35

37

39

37

35

33

37

37

36

33

31

33

34

34

35

36

33

34

36

37

38

41

45

50

56

57

50

52

55 

64

1,247

40.2

0.251

0.29

2,470

Apr.

*72

70

69

69

70

68

65

66

64

64

66

66

66

72

85

105

119

129

149

183

232

307

340

417

488

474

*488

495

448

423

5,829

194

1.21

1.35

11,560

May

423

454

538

637

833

910

994

1,150

1,160

1,290

1,110

910

760

682

740

982

1,380

1,760

2,120

2,370

2,750

3.150

3,030

*2,860

2,80O

2,610

2,320

2,250

1,990

1,970 

2,200

49,113

1,584

9.90

11.42

97,410

June

2,220

2,300

2,080

1,950

1,760

1,520

1,400

1,680

1,860

2,080

2,480

2,640

2,640

2,450

2,320

2,150

1,590

1,530

*1,590

1,620

1,550

1,170

1,O5O

1,120

1,110

1,060

1,070

1,050

1,040

985

51,063

1,702

10.64

11.87

101,300

July

850

900

786

692

652

622

592

544

492

461

438

416

384

353

320

294

273

258

242

228

217

*211

191

182

176

164

151

136

139

139 

132

11,635

375

2.34

2.70

23,O8O

Aug.

134

130

130

118

120

112

108

108

106

102

100

94

89

87

85

82

82

78

77

75

69

66

66

66

*67

66

70

82

78

82 

84

2,813

90.7

0.567

0.65

5,580

Sept.

75

70

69

6S

64

64

63

63

63

63

64

74

72

66

61

60

60

58

57

56

56

57

58

57

57

56

*58

66

69

66

1,888

62.9

0.393

0.44

3,740

Calendar year 1955: Max 1,940 Min 24 Mean 217 Cfsm 1.36 In. 18.39 Ac-ft 157, OOO

Water year 1955-56; Max 3,130 Min 31 Mean 359 Cfsm 2.24 In. 30.56 Ac-ft 260,800

Peak discharge (base, 1.5OO cfs).--May 1O (7 p.m.) 1,33O efs (3.5O ft); May 22 (11 p.m.)

3,410 cfs (4.72 ft); June 13 (3 a.m.) 3,O7O efs (4.57 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affecbed by ice Nov. 2, 13, 15-20, 23-25, 27, 29, Dec. 3 to about 

Mar. 25. No gage-height record Dec. 16-27, Dee. 31 to Jan. 16, Feb. 1-25, Mar. 13-31; discharge 

estimated on basis of weather records, 3 discharge measurements, and records for nearby Snake 

River tributaries.
BUFFALO FORK BASIN 17

Buffalo Fork near Moran, Wyo.

Location. Lat 43°50'10", long 110°30'30" (revised), in sec. 26, T. 45 N., R. 114 W., 

on right bank 30 ft below bridge on county road, half a mile upstream from mouth, 

2f miles downstream from Lava Creek, and 4 miles southeast of Moran.

Drainage area. 378 sq mi.

Records available.--July to November 1906 (gage heights only), July 1917 to September 

1918 (no winter records), September 1944 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 6,720 ft (from topographic map). 

July 31 to Nov. 20, 1906, staff gage 300 ft upstream from mouth at different datum. 

July 9, 1917, to Sept. 30, 1918, staff gages at sites within 500 ft upstream from 

present site at different daturns.

Average discharge. 12 years (1944-56), 617 cfs (446,700 acre-ft per year).

Extremes.--Maximum discharge during year, 4,870 cfs June 2 (gage height, 6.20 ft); 

minimum daily, 90 ofs Mar. 12; minimum gage height, 1.60 ft Nov. 13.

1917-18, 1944-56: Maximum discharge, 5,960 cfs June 27, 1954 (gage height, 

6.71 ft); minimum, 78 ofs Nov. 20, 1953 (gage height, 0.88 ft), 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. No diversion or regulation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

l

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Ac-ft

Oct.

174

171

171

171

174

171

171

184

184

177

184

184

174

174

174

171

168

165

165

184

191

195

195

161

158

161

174

161

161

171

165

5,384

174

0.460

0.53

10,680

Nov.

140

14O

*170

175

174

168

161

158

165

174

174

143

108

125

120

105

110

120

130

145

160

170

165

160

155

150

150

150

150

150

4,465

149

0.394

0.44

8,860

Dec.

150

155

*150

135

125

135

135

130

135

140

140

140

140

130

120

130

130

130

135

140

145

155

170

200

240

250

230

190

170

150

150

4,775

154

0.407

0.47

9,470

Jan.

150

150

145

150

160

155

150

130

130

14O

145

150

150

150

150

150

150

150

*145

140

140

140

140

130

125

130

135

130

125

125

110

4,370

141

0.373

0.43

8,670

Feb.

100

105" 95

110

120

130

130

120

120

125

130

130

130

115

105

100

100

110

110

115

115

115

115

115

115

*115

115

115

115 " "

3,335

115

0.304

0.33

6,610

Mar.

115

115

115

115

110

105

100

110

110

105

100

90

100

100

100

110

105

105

110

120

120

130

130

130

140

160

170

160

155

160

165

3,760

121

0 . 320

0.37

7,46O

Apr.

170

180

170

165

165

160

155

150

145

160

175

190

200

214

226

281

337

332

364

421

508

602

637

674

63O

575

*575

554

521

470

10,106

337

0.892

0.99

2O,04O

May

452

470

528

561

726

749

780

954

1,010

1,070

1,010

886

765

688

703

844

1,190

1,610

1,960

2,390

2,740

3,130

3,6OO

*3, 690

3,660

3,620

3,320

3,430

3,600

3,520

3,830

57,486

1,854

4.90

5.66

114,000

June

4,540

4,710

4,550

4,440

4,440

4,280

3,400

3,460

3,750

3,740

4,070

4,330

4,490

4,440

4,600

4,600

3,560

3,020

*3,140

3,430

3,260

2,610

2,280

2,390

2,570

2,510

2,650

2,790

2,880

2,850

107,780

3,593

9.51

10.60

213,800

July

2,440

2,270

2,150

1,940

1,920

,910

,040

,000

,980

,980

,820

,940

,860

,730

,640

,560

,460

,380

,320

,240

,220

* ,210

1,150

1,130

1,O4O

1,020

990

999

954

911

836

48,04O

1,550

4.10

4.73

95,290

Aug.

860

788

742

681

616

575

548

535

515

502

495

483

464

464

452

452

433

416

41O

421

398

387

353

348

*332

321

343

381

370

364

353

14,802

477

1.26

1.46

29,360

Sept.

332

306

296

296

286

276

271

266

266

266

276

296

281

262

253

248

248

240

235

244

248

244

240

240

235

235

*235

271

276

258

7,926

264

0.698

0.78

15,720

Calendar year 1955: Max 3,380 Mln 1O5 Mean 5O9 Cfsm 1.35 In. 18.27 Ac-ft 368, 1OO

Water year 1955-56: Max 4,710 Win 90 Mean 744 Cfsm 1.97 In. 26.79 Ac-ft 54O,OOO

Peak discharge (base, 3,100 cfs) . June Z (11 a.m.) 4,87O cfs (6.20 ft); June 16 (12 m.)
GROS VENTRE RIVER BASIN

Gros Ventre River at Kelly, Wyo.

Location. Lat 43°37'20", long 110°37'30", in NVf£ seo. 11, T. 42 N. , R. 115 W. , on pier 

at former bridge site on private road, 0.3 mile south of Kelly Post Office and 3 miles 

downstream from Turpin Creek.

Drainage area.--622 sq mi.

Records available.--June to September 1918, October 1944 to September 1956.

Gage. Staff gage read once daily. Altitude of gage is 6,750 ft (from topographic map).

"^June 16 to Sept. 30, 1918, staff gage at site 1 mile upstream at different datum.

Oct. 1, 1944, to Aug. 8, 1949, wire-weight gage on bridge 25 ft downstream at present 

datum. Aug. 9, 1949, to June 25, 1953, staff gage 10 ft upstream at present datum. 

May 15 to July 23, 1954, May 22 to June 28, 1955, supplementary staff gage 300 ft 

downstream at datum 1.09 ft higher, and May 20 to Sept. 30, ly56, supplementary staff 

gage at site 300 ft downstream at datum 0.61 ft lower.

Average discharge.--12 years (1944-56), 483 cfs (349,700 acre-ft per year).

Extremes. Maximum discharge observed during year, 5,000 cfs June 2 (gage height, 5.75 ft, 

supplementary staff gage); minimum observed, 101 cfs Mar. 12 (gage height, 0.27 ft).

1918, 1944-56: Maximum discharge observed, 6,220 cfs June 16, 1918 (gage height, 

9.95 ft, site and datum then in use); minimum observed, that of Mar. 12, 1956.

Flood of May 18, 1927, was considerably higher than flood of June 16, 1918 (landslide about 2 miles upstream washed out and released about 60,000 acre-ft of impounded 

water); discharge not determined.

Remarks.--Records good. Diversions above and below station for irrigation. 

Revisions. WSP 1043: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to May 19 May 2O to Sept. 30

119

153

239

1.5 

2.0 

3.0 

4.0

385

588

1,110

1,860

1.0 

1.5

193

249

314

545

2.0 

3.0 

4.0 

5.8

860

1,660

2,730

5,070

Discharge, in ;b per second, water year October 1955 to September 1956

Day

1

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

2O

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac -ft

Oct.

192

194

186

186

179

184

181

179

179

177

177

177

177

175

173

173

171

169

167

171

173

177

184

184

177

171 

167

169

169

1 67

169

5,474

177

0.285

0.33

10,860

Nov .

169

157

*146

149

155

159

157

153

149

155

165

167

153

148

142

137

130

127

135

146

151

177

173

169

165

161 

161

159

157

155

4,627

154

0.248

0.28

9,180

Dec.

157

161

*157

146

132

133

135

129

133

137

142

140

144

133

118

132

135

135

142

146

151

157

179

230

258

251 

239

218

194

159

163

4,986

161

0.259

0.30

9,890

Jan.

151

157

144

155

165

163

155

140

133

142

149

151

153

155

155

157

153

151

*151

149

138

144

146

140

129

144 

146

140

129

135

129

4,547

147

0.236

0.27

9,020

Feb.

119

105

113

119

130

139

139

133

122

133

144

144

144

139

137

112

125

125

140

137

140

133

146

135

139

140 

*142

137

132

3,843

133

0.214

0.23

7,620

Mar.

135

139

139

140

130

119

111

132

129

125

116

101

118

116

113

124

122

119

124

135

135

144

146

155

167

184 

196

18T

175

184

188

4,342

140

0.225

0.26

8,610

Apr.

*198

205

190

184

186

181

173

165

163

173

184

201

209

216

237

263

281

340

374

422

480

570

635

664

659

616

588

*552

522

460

10,291

343

0.551

0.62

20,410

May

441

441

472

534

635

783

835

888

1,020

1,110

1,050

914

758

659

612

659

888

1,310

1,770

2,380

2,850

3,270

*3,660

3,980

4,110

4,180 

4,180

3,880

3,850

3,850

3,850

59,819

1,930

3.10

3.58

118,600

June

4,620

5.000

4,650

4.O4O

3,980

3,920

3,330

2,610

3,090

3,090

3,330

3,460

3,400

3,270

3,270

3,090

2,610

*2,000

1,950

2,160

2,220

2,050

1,700

1,550

1,700

1,750 

1,700

1,700

1,750

1,720

84,710

2,824

4.54

5.06

168,000

July

,64O

,48O

,440

,340

,230

,190

,180

,200

,150

,130

,140

,110

,180

,150

,070

1,000

937

902

874

847

*828

788

762

756

743

724 

698

665

653

647

617

31,071

1,002

1.61

1.86

61,630

Aug.

623

6T7

575

528

480

455

426

426

403

390

381

369

341

333

333

325

325

318

277

274

274

268

261

255

*249

246 

243

252

249

243

240

10,979

354

0.569

0.66

21,780

Sept.

237

234

226

220

217

217

212

212

217

215

217

217

220

220

215

209

215

212

215

209

206

206

201

204

201

198

*201

204

212

215

6,404

213

0.342

0.38

12,700

Calendar year 1955: Max 2,160 Min 

Water year 1955-56: Max 5,000 Min

116

101

Mean 350 

Mean 631

Cfsm 0.563 In. 7.65 Ac-ft 253,200 

Cfsm 1.01 In. 13.83 Ac-ft 458,300

Discharge measurement made on this day.
HOBACK RIVER BASIN 19

'Hoback River near Jackson, Wyo.

Location. Lat 43°17 I 55", long 110°40'10", in sec. 32, T. 39 N., R. 115 W., on right 

bank at Camp Creek Camp, a quarter of a mile downstream from Willow Creek, 4 miles 

upstream from mouth, and 13 \ miles southeast of Jackson.

Drainage area. 564 sq mi.

Records available. July 1917 to September 1918 (published as "near Cheney"), October 

1944 to September 1956. Monthly discharge only for some periods, published in 

WSP 1317.

Gage. Staff gage read once daily. Altitude of gage is 6,040 ft (from topographic map). 

July 9, 1917, to Sept. 30, 1918, at site 3-jj miles downstream at different datum. 

Nov. 6, 1944, to May 29, 1956, at site 300 ft upstream at datum 0.92 ft higher.

Average discharge. 12 years (1944-56), 717 cfs (519,100 acre-ft per year).

Extremes. Maximum daily discharge during year, 5,800 cfs June 2; maximum gage height, 

7.4 ft probably June 6 (from floodmark); minimum daily discharge, 145 cfs Dec. 15.

1917-18, 1944-56: Maximum discharge observed, 6,160 cfs June 16, 1918 (gage 

height, 13.46 ft, site and datum then in use); minimum observed, 90 cfs Dec. 18, 1946 

(gage height, 1.70 ft).

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

which are fair. Small diversions above station for irrigation.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

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

Oct. 1 to May 29 June 18 to Sept. 3O

2.2 

2.4

2.7 

3.0 

3.5

134

196

352

575

990

4.0 1,460

5.0 2,550

6.O 3,980

7.0 5,800

0.8 277

1.0 361

1.3 525

1.6 740

2.0 1,110

2.5 1,640

3.0 2,220

3.4 2,700

Discharge, in cubic feet per second, wate October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tobal

Mean

Cfsm

In.

Ac-ft

ocb.

250

250

250

261

271

261

250

250

256

256

256

250

240

236

231

231

231

227

227

240

240

250

250

240

214

214

222

222

214

222

231

7,443

240

0.426

0.49

14,760

Nov.

214

222

205

*205

231

214

196

196

222

222

282

222

182

209

200

b!70

bl80

b!90

209

245

256

245

218

214

196

214

222

214

189

214

6,398

213

0.378

0.42

12,690

Dec.

214

205

*189

168

b!65

189

182

161

175

182

175

b!70

b!60

150

bl45

175

189

196

196

205

214

222

3O4

591

559

465

420

328

b240

231

271

7,436

24O

0.426

0.49

14,750

Jan.

231

261

214

b240

240

261

250

205

222

196

196

231

240

214

231

245

205

222

231

*218

205

222

222

214

189

189

196

189

b!90

189 bieo

6,738

217

O.385

0.44

13,360

Feb.

b!70

b!50

b!60

b!70

189

196

205

205

b!90

189

205

205

214

189

196

b!70

182

182

189

b!90

189

b!90

205

196

189

189

*189

196

205

5,494

189

0.335

0.36

1O,90O

Mar.

196

182

189

205

196

bl80

b!70

192

192

182

b!70

b!50

168

b!70

b!70

186

186

172

172

192

196

196

214

240

261

304

298

266

266

276

322

6,459

208

0.369

0.43

12,810

Apr.

*352

346

310

287

346

245

276

334

334

413

559

607

671

812

930

1,280

1,440

1,590

1,730

2,000

2,290

2,840

2,840

5,140

3,090

2,550

2,480

*2,240

2,160

1,910

40,402

1,347

2.39

2.66

80,140

May

2,050

2,050

2,220

2,330

2,830

2,500

2,530

2,720

2,650

2,800

2,5OO

2,270

2,240

1,800

1.780

2,000

2,410

2,890

3,540

4,000

4,600

5,110

*5,470

5,330

5,560

5,720

5,140

4,290

4,250

4,700

5.OOO

105,280

3,396

6.02

6.94

208,800

June

5,400

*5J 800

5,300

4.7OO

4,600

4,500

3,500

3,200

3,400

3,600

3,700

3,800

3,700

3,600

3.6OO

3,500

3,000

*2,110

2,340

2,680

2,650

2,340

2,000

2,200

2,340

2,360

2,390

2,360

2,360

2,340

99,370

3,312

5.87

6.55

197,100

July

1,980

2,000

1,910

1,770

1,680

1,660

1,640

1,640

1,640

1,620

1,620

1,600

1,510

1,490

1,380

1,310

1,230

1,210

,190

* ,140

,110

,090

,110

,O9O

1,030

1,030

977

920

920

902

996

42,385

1,367

2.42

2.79

84,070

Aug.

977

884

812

724

676

660

646

618

632

604

590

564

551

551

538

513

501

489

477

489

465

454

432

421

421

*410

410

40O

390

"5ST 381

OO-L

17,061

550

0.975

1.12

33,840

Sept.

371

371

352

343

343

334

334

334

334

334

325

325

325

316

325

352

343

334

308

316

308

308

316

316

*308

308

316

316

308

308

9,831

328

0.582

0.65

19,500

Calendar year 1955: Max 

Water year 1955-56: Max

2,450

5,800

Mln 

Min

137

145

500

968

Cfsm 0.887 In. 12.03 Ac-ft 362,300 

Cfsm 1.72 In. 23.34 Ac-ft 702,700

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record May 30 to June 17; discharge estimated on basis of slope-area determination, weather records, and records for nearby stations.
20 SNAKE RIVER MAIN STEM

Snake River above reservoir, near Alpine, Wyo.

Location. Lat 43 0 11'50", long 110°53'10", on right bank, a quarter of a mile downstream 

from Wolf Creek, 7 miles upstream from Greys River, and 9 miles upstream from Alpine, 

Lincoln County.

Drainage area.--3 ,465 sq mi.

Records available. March 1937 to March 1939 (published as "above Greys River near Alpine"), 

July 1953 to September 1956.

Gage. Water-stage recorder. Datum of gage is 5,683.90 ft above mean sea level, unadjusted. 

Mar. 16, 1937, to Mar. 31, 1939, at site 6| miles downstream at different datum.

Extremes. Maximum discharge during year, 25,200 cfs June 3 (gage height, 10.79 ft in 

gage well, 11.4 ft from outside water surface); minimum, 740 cfs Nov. 16 (gage height, 

2.19 ft).

1937-39, 1953-56: Maximum discharge, 26,800 cfs June 28, 1954 (gage height, 

11.68 ft); minimum, that of Nov. 16, 1955.

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

partly regulated by Jackson Lake (see p. 14). Some diversions from tributaries above 

station.

Cooperation. Water-stage-recorder graph and five discharge measurements furnished by 

Bureau of Reclamation.

Discharge, In cubic feet per second, water year October 1955 to .September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

,600 

,560

,540

,540

,570

,650

,600

,580

,560

,540

1,560

1,540

1,510

1,490

1,470

1,460

1,450

1,440

1,450

1,460

*1 , 500

1,530

1,530

1,480 

1,410

1,400

1,390

1,400

1,390

1,390

1,410

46,380

1,496

91,990

Nov.

1,340 

1,270

1,290

1,300

1,340

1,320

1,280

1,240

*1,250

1,310

1,480

1,340

1,170

1,240

1,140

978

1,140

1,280

1,330

1,450

1,610

1,620

1,440

1,370 

1,320

1,330

1,360

1,310

1,280

1,290

------

39,418

1,314

78,180

Dec.

1,310 

1,320

1,260

1,180

1,170

1,200

1,290

1,270

1,360

1,340

1,270

*1,290

1,230

1,100

1,150

1,250

1,290

1,320

1,340

1,350

1,280

1,470

2,520

3,590 

2,670

2,280

2,220

1,990

1,790

1,940

2,000

48,840

1,575

96,870

Jan.

1,780 

1,730

1,610

1,700

1,630

*1,560

1,450

1,450

1,430

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,380

1,380

1,360

1,340

1,340

1,360

1,320 

1,240

1,350

1,350

1,290

1,250

1,200

1,100

43,800

1,415

86,880

Feb.

1,000 

950

1,100

1,180

1,230

1,240

1,250

1,250

1,250

1,250

1,250

1,250

1,250

1,200

1,150

1,100

1,100

1,140

1,160

1,200

1,230

1,250

1,270

1,300 

1,300

1,300

1,300

1,300

1,300

------

35,050

1,209

69,520

Mar.

1,500 

1,300

1,300

1,310

1,320

1,310

1 , 300

1,300

1,300

1,500

1,300

1,350

1,700

2,000

2,500

2,550

2,570

2,550

*2 , 540

2,570

2,670

2,780

2,880

4,120 

4,990

5,190

5,030

4,910

4,970

5,O60

5,210

82,480

2,661

163,600

Apr.

5,520 

5,170

5,080

5,060

5,210

*5,100

5,060

5,230

5,280

5,490

5,780

5,970

6,170

6,380

6,820

7,490

7,730

8,10O

8,400

7,570

6,430

6,850

7,190

7,900 

7,980

*7,250

7,250

6,770

6,170

6,020

192,220

6,407

381,300

May

6,250 

6,790

7,440

8,070

9,200

9,260

9,110

9,590

10,300

12,100

15,500

12,500

12,200

11,600

11,700

12,400

13,900

15,600

16,300

16,700

*17,200

18,100

19,2OO

19,700 

20.500

20,300

20,30O

19,900

*20,200

19,700

19,900

439,110

14,160

871,000

June

21,700 

23,300

24,500

24,100

23,900

23,OOO

21,100

21,400

22,200

22 , 500

21,700

21,200

21,700

21,500

*2O,600

19,700

17,500

15,000

14,300

15,100

15,900

14,800

13,600

12,000 

12,300

12,500

14,000

15,400

15,500

15,200

------

557,200

18,570

1,]05£>00

July

14, 500 

13,400

13,000

12,700

11,700

11,500

11,100

10,700

ll.OOO

10,900

10,600

*10,700

10,900

10,600

10,300

10,300

1O,4OO

1O,3OO

10,300

10,600

10,800

1O,70O

10,300

*io,ioo

9,950

9,740

9,590

9,620

9,650

9,590

9,350

334,890

10,800

664,200

Aug.

9,140 

8,810

8.6OO

8,180

7,870

7,710

7,490

7,490

7,620

7,600

7,520

7,440

7,350

7,270

7,270

7,140

7,000

6,850

6,740

6,850

*6,770

7.O8O

7,600

7,870 

7,840

7,980

8,150

7,710

7,220

6,9OO

6,740

233,780

7,541

463,700

Sept.

6,770 

6,9OO

6,900

6,870

7,060

7,330

7,440

7,140

7,000

6,950

6,560

6,480

6,200

5,800

5,060

4,620

4,400

4,070

4,140

4,840

5,170

5,060

4,820

4,760 

*4,120

3,650

3,480

3,070

2,290

2.040

------

160,990

5,366

319,500

Calendar year 1955: Max 14,700 Mln 978 Mean 3,912 Ac-ft 2,832,OOO

Water year 1955-56: Max 24,500 Mln 950 Mean 6,050 Ac-ft 4,392,OOO

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec 16-19, Jan. 9-13, 15, 16, Jan. 29 to Mar. 17.
GREYS RIVER BASIN 21

Greys River above reservoir, near Alpine, Wyo.

Location. Lat 43 0 08'50", long 110°09'20", In SW£ sec. 33, T. 37 N., R. 118 W. , on left 

bank 2j miles upstream from mouth and 3j miles southeast of Alpine.

Drainage area. 451 sq mi.

Records available. July to September 1917, June to September 1918, March 1937 to March 

1939, October 1953 to September 1956. Published as Greys River near Alpine, Idaho, 

1917-18 and as Greys River near Alpine, Wyo., 1937-39.

Gage. Water-stage recorder. Datum of gage is 5,620.33 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. July 6 to Sept. 30, 1917, and June 4 to 

Sept. 30, 1918, staff gage, and Mar. 17, 1937, to Mar. 31, 1939, water-stage recorder, 

at site three-quarters of a mile downstream at different datum.

Extremes. Maximum discharge during year, 5,010 cfs May 25 (gage height, 7.58 ft); minimum, 118 cfs Dec. 15 (gage height, 2.62 ft).

1917-18, 1937-39, 1953-56: Maximum discharge observed, 5,200 cfs June 14, 1918 

(gage height, 4.85 ft, former site >and datum); minimum, that of Dec. 15, 1955.

Remarks. Records excellent except those for periods of ice effect, which are fair. Less 

than 500 acres irrigated by diversions from Greys River and tributaries above station.

Cooperation. Water-stage-recorder graph and eight discharge measurements furnished by 

Bureau of Reclamation.

Rating table, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used May 5-19, June 5-25)

2.7 

3.0 

3.5

4.0

1Z5 

190 

350 

6Z5

4.5 

5.0 

6.0

1,010

1,500

2,690

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

 total

Mean

Cfsm

In.

Ac -ft

Oct.

255 

255

252

249

260

255

255

*255

252

246

258

249

246

240

240

240

238

238

235

240

249

263

255

240 

252

238

240

240

238

243 

243

7,639

246

0.545

0.63

15,150

Nov.

221 

224

235

238

243

226

229

218

235

263

292

238

190

200

175

147 T5B"

178

232

245

260

*278

260

238 

218

249

260

246

232

240

6,875

229

0.508

0.57

13,640

Dec.

243 

238

224

204

172

201

201

180

190

172

163

180

160

150

145

155

165

175

224

249

240

275

646

1.190 

866

710

618

524

405

385 

430

10,080

325

0.721

0.83

19,990

Jan.

410 

390

334

338

346

*330

300

300

275

296

292

300

300

2 82

296

300

282

275

275

272

263

269

278

263 

243

255

266

238

232

246 

226

8,972

289

0.641

0.74

17,800

Feb.

212 

200

190

180

180

190

195

200

210

210

220

220

220

220

220

220

220

220

220

220

220

230

240

?40

235

230

230

225

*223

6,240

215

0.477

0.51

12,380

Mar.

230 

240

245

240

235

240

240

245

255

260

250

240

240

240

240

245

258

270

286

289

289

310

314

390 

495

573 5T8~

465

435

445

530

9,752

315

0.698

0.80

19,340

Apr.

573 

512

485

470

*490

455 455"

495

490

592

718

755

858

978

1,180

1,400

1,400

1,400

1,600

1,790

2,070

2,330

2,290

2.450 

2,250

*2,230

2,190

-1,870

1,640

1 , 500

57,896

1,265

2.80

3.12

75,170

May

1,530 

1,590

1,680

1,960

2,520

2,390

2,280

2,430

2,510

2,520

2,290

1,860

1,700

1,560

1,520

*1,680

2,040

2,640

3,050

3,520

*3,820

4,040

4,290

4,340 

4.850

4,580

4,180

*3,800

*3,650

5,520

5,800

88,140

2,843

6.30

7.26

174,800

June

4,180 

4.280

4,170

4,000

3,870

3,650

3,090

3,080

3,160

3,160

5,340

5,280

3,240

*3,130

3,050

2,940

2,500

2,240

2,260

2,590

2,540

2,000

1,860

1,870 

1,860

1,820

1,780

1,740

1,660

1,610

83,550

2,785

6.18

6.90

165,700

July

1.520 

1,480

1,390

1,500

1,270

1,240

1,220

1,160

1,100

1,080

1,060

*1 , 040

1,020

970

958

906

882

850

818

794

778

770

762

740 

725

702

695

702

688

674

660

29,934

966

2.14

2.47

59,370

Aug.

653 

%?5

*618

599

586

566

560

548

542

556

550

524

518

512

506

500

506

490

485

480

470

460

445

445 

440

455

435

450

420

*415 4TB15,694

506

1.12

1.29

31,150

Sept.

405 

400

400

395

395

390

590

395

400

390

405

395

385

380

380

575

370

365

370

365

*360

555

555

355 

350

346

346

370

585

355

11,327

378

0.838

0.94

22,470

Calendar year 1955: Max 1,930 Min - Mean 465 Cfsm 1.03 In. 14.01 Ac-ft 337,000

Water year 1955-56 : Max 4 850 Min 145 Mean 864 Cfsm 1.92 In. 26.06 Ac-ft 626,900

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 14, 15, Dec. 12-14, Feb. 2 to Mar. 5, 

Mar. 8-11, 15-16, 18.
22 SALT RIVER BASIN

Salt River near Smoot, Wyo.

Location. Lat 42°36'20", long 110e 55'10", in sec. 7, T. 30 N. , R. 118 W., on left bank 

"mTles south of Smoot, ;, lj miles upstream from Willow Creek, and 4 miles upstream

from Cottonwood Creek.

Drainage area. 47.8 sq mi.

Records available.--June 1932 to September 1956. Monthly discharge only for some periods, 

published in WSP 1317.

f

. Water-stage recorder. Altitude of gage is 6,600 ft (from topographic map). Prior 

o Apr. 11, 1934, chain gage, and Apr. 11 to. Oct. 1, 1934, water-stage recorder, at 

same site at datum 1.00 ft higher.

Average discharge.--24 years, 35.5 cfs (25,720 acre-ft per year).

Extremes. Maximum discharge during year, 394 cfs May 24 (gage height, 3.40 ft); minimum 

daily, 3.5 cfs Feb. 1.

1932-56: Maximum discharge, 430 cfs May 15, 1936 (gage height, 3.15 ft), from 

rating curve extended above 200 cfs; maximum gage height, 3.76 ft June 9, 1944 (backwater from tree); no flow Jan. 25-28, 1949.

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

which are fair. Diversions above station for irrigation of about 4,000 acres (for 

details on adjudication of diversions, see Remarks for this station in WSP 1217).

Revisions. WSP 1123: Drainage area.

Rating table, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used May 6-19)

1.3 3.2

1.4 6.3

1.5 11

2.5 180

3.0 296

3.4 394

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

11

11

10

10~9.6

10

10

10

10

10

10

10

10

10

10

11

12

13

13

*13

12

13

12

11

12

12

12

12

12

12

12

345.6

11.1

685

Nov.

12

12

12

12

12

12

12

13

14

14

14

14

11

9.0

7.0

6.0

670

*6.0

7.0

7.5

8.0

8.0

7.0

7.0

7.0

9.0

9.0

9.0

9.0

9.0

294.5

3.82

584

Dec.

9.0

8.0

8.0

7.0

6.0

6.0

6.0

6.0

7.0

7.0

8.0

8.0

8.0

7.0

6.0

*6.0

6.0

7.0

7.0

7.0

8.0

9.0

11

To

10

9.0

8.0

7.0

6.0

6.0

6.0

230.0

7.42

456

Jan.

6.0

6.0

6.0

6.0

7.0

7.0

7.0

7.0

7.0

6.0

7.0

7.0

7.0

7.0

7.0

7.0

*7.0

7.0

7.0

7.0

7.0 7'.0

7.0

7.0

7.0

7.0

7.0

6.0

5.0

5.0

4.0

204.0

6.58

405

Feb.

3.5

4TO

4.0

4.0

4.0

*4.0

4.0

4.0

4.0

4.0

5.0

6.0

eTo

6.0

5.0

5.0

4.5

4.5

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

136.5

4.71

271

Mar.

5.0

57^

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

6.0

6.0

6.0

6.0

6.0

6.0

7.0

8.0

9.0

10

12

10

10

12

14

15

218.0

7.03

432

Apr.

20

20

20

20

20

20

23

25

*27

29

40

46

65

84

96

114

134

143

156

176

169

180

182

173

143

147

160

126

106

100

2,764

92.1

5,480

May

104

no

116

136

167

191

184

217

215

209

*191

162

147

138

136

143

154

180

202

315

349

346

359

346

576

374

339

308

291

272

274

7,051

227

13,990

June

*313

332

315

296

284

265

238

243

236

224

234

222

213

213

211

195

162

143

140

134

130

112

110

110

no

noe

106

104

96

92.

5,699

190

11,300

July

86

80

74

68

66

63

61

59

57

55

54

52

50

*48

46

44

43

41

40

37

36

33

31

29

29

29

28

27

27

27

26

1,446

46.6

2,870

Aug.

26

25

25

24

23

22

22

22

21

21

21

21

20

20

19

20

19

19

20

20

19

19

19

18

18

18

18

18

17

15

*T5

624

20.1

1,240

Sept.

17

17

17

16

16

15

15

15

15

15

15

15

15

16

15

15

15

*14

14

14

14

14

14

13

13

13

13

13

13

13

439

14.6

871

Calendar year 1955: Max 190 Mln 3.8 Mean 27.0 Ac-ft 19,510

Water year 1955-56: Max 376 Mln 3.5 Mean 53.1 Ac-ft 38,580

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 1-3, 6-9, Nov. 12 to Jan. 31. No gage-height 

record Oct. 6-20, Feb. 1 to Apr. 9, July 12-14, Sept. 22-30; discharge estimated on basis of 4 discharge measurements, recorded range in stage, and records for Cottonwood Creek near Smoot.
SALT RIVER BASIN 23 

Cottonwood Creek near Smoot, Wyo.

Location. Lat 42°36'40", long 110 0 53'30", in sec. 4, T. 30 N. , R. 118 W. , on right bank 

0.3 mile upstream from headgate of highest diversion, 1-jj miles downstream from Porcupine Creek, 1-| miles southeast of Smoot, and 4-| miles upstream from mouth.

Drainage area. 26.3 sq mi.

Records available.--October 1932 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 6,750 ft (from topographic map). Prior 

to Apr. 8, 1934, staff gage at site a quarter of a mile downstream at different datum.

Average discharge. 24 years, 44.0 cfs (31,880 acre-ft per year).

Extremes. Maximum discharge during year, 438 cfs June 2 (gage height, 3.31 ft); minimum 

daily, 10 cfs Feb. 1.

1932-56: Maximum discharge, that of June 2, 1956; minimum, 6.4 cfs Mar. 11, 1948; 

minimum gage height, 0.95 ft Jan. 19, 1950.

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

which are fair. No diversion above station. Flow regulated by Cottonwood Lake.

Revisions (water years).--WSP 933: Drainage area. WSP 1153: 1933.

Rating table, water year 1955-56, except periods of ice effect (gage 

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

1.2

1.3

1.5 

1.7

210

345

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

23

23

23

23

23

23

23

23

22

22

21

21

20

20

20

20

19

19

19

*19

18

18

17

16

16

1516"

16

16

16

16

606

19.5

1,200

Nov.

16

16

16

16

16

16

16

16

16

17

18

rr

16

17

17

16

16

*16

16

16

16

16

16

16

16

TB- 15

15

15

15

482

16.1

956

Dec.

15

16

15

16

14

14

14

14

14

14

14

14

14

15

*14

14

14

14

14

14

14

14

20

2319"

18

17

16

16

14

14

472

15.2

936

Jan.

14

14

14

14

13

13

13

13

13

13

13

13

13

13

13

13

*13

13

13

12_

12

12

12

12

12

12

12

12

12

12

12

395

12.7

783

Feb.

10

11

12

12

*12

12

12

12

12

12

13

14

14

13

13

13

13

13

12

12

12

12

12

12

12

12

12

12

12

355

12.2

704

Mar.

12

12

12

12

12

12

12

*12

12

12

11

12

12

12

12

12

12

12

12

12

12

13

14

16

17

18

17

16

16

16

17

411

13.3

815

Apr.

17

17

16

16

16

16

16

16

*16

17

18

20

21

23

26

28

28

29

33

38

42

4646"

46

44

43

44

43

41

40

862

28.7

1,710

May

38

37

3T

38

42

44

46

51

56

62

*67

64

60

56

54

54

61

85

123

153

178

180

190

190

235

235

222

218

250

252

268

3,646

118

7,230

June

*342

360

3BT

324

315

291

265

£32

230

260

252

262

208

220

188

162

158

150

146

148

143

141

126

130

128

*130

132

132

128

117

6,171

206

12,240

July

107

100

94

90

88

88

88

88

88

88

86

86

86

83

*82

82

80

77

74

73

70

70

69

70

69

67

67

65

65

6464"

2,468

79.6

4,900

Aug.

61

19

58

56

56

54

54

54

54

53

52

51

50

50

48

48

47

47

46

46

45

43

42

41

41

41

40

40

39

39

*39

1,494

48.2

2,960

Sept.

37

37

36

36

36

35

34

34

33

33

33

33

33

30

32

32

31

*31

31

30

30

30

29

29

28

28

28

28

28

28

953

31.8

1,890

Calendar year 1955; Max 168 Mln 7.3 Mean 34.5 Ac-ft 24,950

Water year 1955-56; Max 360 Mln 10 Mean 50.0 Ac-ft 36,330

Peak discharge (base, 140 cfs). June 2 (9 a.m.) 438 cfs (3.31 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 16, Dec. 5, 15, 16, Jan. 27 to Feb. 1, 

Mar. 11-13. No gage-height record Feb. 2 to Mar. 8; discharge estimated on basis of 2 discharge 

measurements and weather records.
24 SALT RIVER BASIN

Swift Creek near Afton, Wyo.

Location. Lat 42°43'30", long 110°54'00", in Sfi£ sec. 29, T. 32 N., R. 118 W., on right 

bank 1 mile upstream from mouth of canyon, ij miles east of Afton, and 4? miles upstream from mouth.

Drainage area. 27.4 sq mi.

Records available. October 1942 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 6,420 ft (from topographic map). 

Average discharge. 14 years, 89.1 cfs (64,550 acre-ft per year).

Extremes. Maximum discharge during year, 565 cfs June 3 (gage height, 3.37 ft); minimum 

daily, 27 cfs Feb. 1.

1942-56: Maximum discharge, that of June 3, 1956; maximum gage height, 3.41 ft 

May 28, 1951; minimum daily discharge, that of Feb. 1, 1956.

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

Diversions above station for powerplant above station and municipal use below (for 

details on adjudication of diversions, see Remarks for this station in WSP 1217).

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

1.7 

1.9 

2.1

2.5 

3.0 

3.3

174

380

530

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota]

Mean

Ac- ft

Oct.

47

47

47

45

44

45

45

45

45

45

45

44

44

44

44

44

44

44

44

*47

IB- 48

44-

44

42

44

42

41

41

40

42

1,375

44.4

2,730

Nov.

40

40

42

40

42

38

40

39

38

44

44

41

41

42

42

41

41

*40

40

41

41

41

40

40

41

41

39

39

41

40

1,219

40.6

2,420

Dec.

39

36

39

41

36

37

37

35

36

36

34

3S

34

34

*34

36

36

36

36

36

36

37

44

51

41

41

41

41

41

40

39

1,175

37.9

2,330

Jan.

36

38

37

36

35

34

34

34

34

32

32

32

33

34

34

36

*36

35

35

35

36

35

34

34

32

34

34

32

32

31

29

1,055

34.0

2,090

Feb.

27

28

31

33

*33

37

35

35

35

35

38

35

35

35

35

35

32

32

32

32

35

35

35

35

35

35

35

35

35

988

34.1

1,960

Mar.

30

35

35

35

35

30

30

35

*35

30

30

32

32

32

32

35

35

37

37

37

37

37

37

37

37

35

35

35

35

37

39

1,070

34.5

2,120

Apr.

39

37

35

35

35

34

37

38

*39

40

40

40

40

40

41

45

48

49

51

57

64

68

73

73

68

71

71

73

73

68

1,522

50.7

3,020

May

66

66

69

73

75

77

81

85

93

96

96

89

*85

83

81

85

93

127

177

217

233

237

268

276

380

371

335

308

290

304

380

5,296

171

10,500

June

*470

455

505

470

490

490

405

430

430

410

430

440

430

376

395

308

263

237

550

272

268

258

258

276

281

*281

281

281

281

286

10,707

357

21,240

July

268

268

258

245

245

245

245

233

225

209

202

205

202

193

*194

163

154

152

146

141

132

132

132

130

127

127

122

116

114

111

106

5,542

179

10,990

Aug.

103 103"

96

93

91

91

91

89

89

85

81

79

85

81

85

81

77

77

75

77

75

71

71

71

71

68

71

68

68

66

*7?R ^DD

2,495

80.5

4,950

Sept.

59" 69

68

64

64

64

64

62

60

66

66

62

60

59

60

57

60

*60

59

59

59

57

55

57

55

55

54

57

54

52_

1,807

60.2

3,580

Calendar year 1955 : Max 301 Mln 34 Mean 70.6 Ac -ft 51,100

Water year 1955-56 : Max 505 Mln 27 Mean 93.6 Ac-ft 67,930

Peak discharge (base. 390 cfs). June 3 (12:30 p.m.) 565 cfs (3.37 ft). 

* Discharge measurement made on this day.

Hote. No gage-height record Nov. 15-17, Feb. 1 to Apr. 14j discharge estimated on b 

charge measurements, weather records, and records for nearby stations.

lasis of 4 dis-
SALT RIVER BASIN 25

Salt River above reservoir, near Etna, Wyo.

Location. Lat 43°04'50", long 111°02 I 15", in NE^ sec. 28, T. 36 N., R. 119 W., on right 

bank 3| miles northwest of Etna and 8 miles upstream from mouth.

Drainage area. 829 sq mi.

Records available.--July to September 1917, June to September 1918, October 1953 to September 1956.Published as Salt River near Alpine, Idaho, 1917-18.

gage. Water-stage recorder. Datum of gage is 5,675.78 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. July 1 to Sept. 30, 1917, and June 5 to 

Sept. 30, 1918, staff gage at site 5 miles downstream at different datum.

Extremes . Maximum discharge during year, 2,420 cfs Apr. 24 (gage height, 4.68 ft); minimum, 281 cfs Feb. 4 (gage height, 1.81 ft).

1917-18, 1953-56: Maximum discharge, that of Apr. 24, 1956; minimum, that of Feb.4, 

1956.

Remarks. Records excellent except those for periods of no gage-height record or ice 

effect, which are fair. Diversions above station for power developments, industry, 

municipal supply, and irrigation of about 66,000 acres (for details on adjudication of 

diversions, see Remarks for this station in WSP 1347).

Cooperation. Water-stage-recorder- graph and 10 discharge measurements furnished by Bureau 

of Reclamation.

Rating tables, water year 1955-56, except periods of ice effect (gage 

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

Oct. 1 to Apr. 3 Apr. 4 to Sept. 30

1.9 

2.1 

2.5 

3.0 

3.3

290

366

560

950

1,200

2.5

3.0 

4.0 

4.8

610

995

1,820

2,530

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

536

530

530

530

530

530

536

530

530

*530

530

530

530

536

536

536

536

530

530

530

542

548

542

530 

524

524

524

530

542

554 

554

16,550

534

32,830

Nov.

548

542

542

542

548

548

548

554

554

574

574

567

542

560

518

512

aSSTJ

a530

548

548

595

609

*574

554 

536

536

574

588

588

567

16,640

555

33,000

Dec.

560

567

554

542

506

524

518

512

524

512

512

512

518

495

b480

b485

b495

495

490

490

495

567

849

1,190 

1,010

942

882

785

675

638

652

18,976

612

37,640

Jan.

630

630

588

581

609

595

567

554

*524

530

536

536

542

542

554

609

588

567

554

554

548

548

548

530 

524

524

536

506

495

512

465

17,126

552

33,970

Feb.

b360

b320

b300

294

?97

342

374

332

378

370

402

424

437

432

»428

398

382

424

441

450

432

394

410

441 

446

455

465

470

470

- -----

11,618

401

23,040

Mar.

485

475

465

450

446

437

437

450

432

428

428

424

428

441

419

419

410

410

415

424

424

437

465

500 

581

675

668

645

630

675

755

15,176

490

30,100

Apr.

833

785

753

*738

768

745

768

828

859

971

1,110

1,160

1,340

1,500

1,630

1,790

1,770

1,870

1,940

2,010

2,110

2,230

2,300

*2,580 

2,300

2,260

2,370

2,330

2,210

2,060

46,718

1,557

92,660

May

1,970

1,940

1,940

2,010

2,23O

2,240

2,240

2,200

2,210

2,240

2,280

2,230

2,100

1,950

1,820

1,770

1,840

1,950

2,080

2,200

*2,280

2,320

2,300

2,330 

2,340

2,330

2,310

2,250

2,190

2,140

2,050

66,280

2,138

131,500

June

2,020

1,990

1,910

1,830

1,740

1,650

1,560

1,410

,320

,270

,240

,190

,150

* ,130

1,110

1,250

1,270

1,210

1,130

1,09O

1,210

1,150

1,100

1,050 

1,040

995

955

947

939

, 925

38,779

1,293

76,920

July

915

939

923

923

907

875

875

867

925

931

875

843

828

812

790

782

782

*768

745

750

730

730

738

*760 

738

760

745

758

752

768

760

25,252

815

50,090

Aug.

760

752

745

745

758

745

722

722

715

708

700

685

700

700

692

*692

708

715

708

715

708

692

670

662 66~2~

670

678

685

692

700

700

21,886

706

43,410

Sept.

692

685

Too- 700

700

*700

692

692

7OO

692

692

692

692

685

678

678

670

662

662

670

670

67O

670

670 

662

*655

S55

662

662

662

20,372

679

40,410

Calendar year 1955: Max 1,210 Mln 358 Mean 561 Ac-ft 405,900

Water year 1955-56: Max 2,380 Mln 294 Mean 862 Ac-ft 625,600

* Discharge measurement made on this day.

a No gage-height record; discharge interpolated.

b Sjtage-discharge relation affected by ice.

467239 O-58 3
26 McCOY CREEK BASIN

McCoy Creek above reservoir, near Alpine, Idaho

Location. Lat 43°10'50", long 111°06'55", in SW£ sec. 6, T. 3 S., R. 46 E. , on left bank 

1| miles upstream from mouth and 3-| miles west of Alpine.

Drainage area. 108 sq mi.

Records available.--July to September 1917, June to September 1918, May to July 1934, 

September 1953 to September 1956. Monthly discharge only for some periods, published 

in'WSP 1317. Published as McCoy Creek near Alpine, Idaho, 1917-18 and as McCoy Creek 

near Alpine, Wyo., 1934.

Gage. Water-stage recorder. Datum of gage is 5,635.4 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947 (levels partly by Bureau of Reclamation). 

July 15 to Sept. 30, 1917, staff gage, June 25 to Sept. 30, 1918, water-stage recorder, 

and May 1 to July 31, 1934, staff gage, at sites 1 mile downstream at different datum.

Extremes. Maximum discharge daring year, 1,130 cfs Apr. 21 (gage height, 5.72 ft); minimum, 9 cfs Nov. 8.

1917-18, 1934, 1953-56: Maximum discharge, that of Apr. 21, 1956; minimum, 1 cfs 

on many days daring 1934.

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

which are fair. No diversion above station.

Cooperation.--Water-stage-recorder graph and 12 discharge measurements furnished by 

Bureau of Reclamation.

Rating tables, water year 1955-56, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Apr. 22, 23)

Oct. 1 to Apr. 1

1.2 

1.4

8

1.8 

Discharge, in

2.0

2.5 

3.0 

3.5

175

305

Apr. 2 to Sept. 30

3.5 305 5.0 833 

4.0 467 5.3 950 

Note. Same as preceding 

table below 3.5 ft.

ubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

. Ac-f t

Oct.

IB- 15

15

15

15

»16

15

15

15

15

17

17

16

15

15

15

15

15

15

15

15

18

16

16

15

15

16

16

16

16

16

481

15.5

0.144

0.17

954

Nov.

15

b!4

b!4

15

16

16

b!5

*b!5

16

17

19

16

b!5

bl4

b!3

b!3

b!4

b!6

18

21

26

21

19

17

b!6

18

22

21

19

18

509

17.0

0.157

0.18

1,010

Dec.

18

16

b!5

b!5

bl5

b!5

bl5

bl5

b!6

bl6

bl6

bl5

b!4

bl3

bT3

b!4

b!5

bl5

b!6

16

16

20

145

229

T?5

100

94

72

48

57

53

1,262

40.7

0.377

0.43

2,500

Jan.

44

43

b40

»39

40

35

b34

b33

b33

32

30

29

28

26

b26

b26

bZ6

b26

b26

26

26

26

25

25

b25

b25

25

b25

b25

b24

b25

916

29.5

0.273

0.31

1,820

Feb.

b22

b22

22

2i

23

23

23

23

23

23

23

23

23

23

22

22

22

22

22

22

22

22

22

21

2T

21

21

21

21

643

22.2

0.206

0.22

1,280

Mar.

*21

20

20

20

b20

b20

b20

b21

22

22

b21

b21

1)21

b21

b21

b21

22

b23

b25

27

32

40

55

82

133

167

T43

120

106

110

139

1,556

50.2

0.465

0.54

3,090

Apr.

157

*137

123

12O

123

TIB" 115

132

141

195

270

279

381

474

657

724

7O9

806

*829

849

'S2T 927

919

»927

806

*818

833

768

676

587

15,521

517

4.79

5.34

30,790

May

572

572

583

683

746

698

668

653

642

620

590

515

447

390

378

413

487

558

635

657

646

642

620

602

»587

550

498

460

426

390

574

17,302

558

5.17

5.96

34,320

June

371

355

336

314

293

265

245

226

219

211

204

199

190

*188

190

184

169

157

147

143

141

128

123

115

110

108

103

99

95

31

5,719

191

1.77

1.98

11,340

July

89

90

8l

80

77

72

69

67

64

62

61

»58

56

53

51

SO

48

46

44

43

45

44

41

40

39

37

38

40

37

38

35_

1,698

54.8

0.507

0.58

3,370

Aug.

*34

32

30

30

29

29

29

29

27

26

26

26

25

25

25

25

25

25

25

26

*24

19

^

2O

20

20

21

22

22

20

20

776

25.0

0.231

0.27

1.54O

Sept.

Ts- 19

18

18

17

18

17

17

18

17

19

18

 17

17

IS

16

16

16

15

15

IS

IS

15

15

15

15

15

16

16

15

494

16.5

0.153

0.17

980

Calendar year 1955: Max 568 Min 11 Mean 63.5 Cfsm 0.588 In. 8.OlAc-ft 45,940

Water year 1955-56: Max 927 Mln 13 Mean 128 Cfsm 1.19 In. 16.15Ac-ft 92,990

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Mote. Ho gage-height record Feb. 3-29; discharge estimated on basis of records for nearby 

stations.
INDIAN CREEK BASIN 27

Indian Creek above reservoir, near Alpine, Idaho

Loiatlpn.--I.at 43°15'35", long 111°04'00", near center of sec. 9, T. 2 S., R. 46 E., on 

right bank a quarter of a mile downstream from forks of creek, 3 miles upstream from 

mouth, and 5| miles north of Alpine.

Drainage area. 36.8 sq ml.

Resords available. July to September 1917, June to September 1918, August 1953 to September 1956.Published as Indian Creek near Blowout 1917-18.

Gage. Water-stage recorder. Altitude of gage Is 5,820 ft (from topographic map). 

 July 14 to Sept. 30, 1917, and June 4 to Sept. 21, 1918, staff gage at site 3 miles 

downstream at different datum.

Extremes. Maximum discharge during year, 297 cfs June 13; maximum gage height, 3.89 ft 

June 1; no flow for many days.

1917-18, 1953-56: Maximum discharge observed, 350 cfs June 14, 1918; no flow for 

many days.

Re narks. Records fair. One small diversion from North Pork for irrigation.

Copperation.--Water-stage recorder chart and two discharge measurements furnished by 

Bureau of Reclamation.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used June 3-27, Aug. 5 to Sept. 24)

1.0

1.2

1.3 

1.5 

1.7

2.0 

2.5 

3.0 

3.5 

4.0

28

65

122

195

277

Discharge, in cubic feet per second, water year October 1955 to September 1956

Da,r

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23E4'

25

26

27

28

29

30

31

Totil

Mean

AC- ft

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

1

0.03

2

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

al

a3

a5

a7

*11

12

12

12

11

11

9

8

102

3.4

202

May

7

T

7

9

11

12

14

16

18

22

19

14

12

8

7

14

20

38

52

65

90

*121

154

149

147

133

126

- 121

*156

152

rr?

1,898

61.2

3,760

June

208

196

202

211

213

195

200

208

229

219

213

211

268

257

*224

182

121

101

108

118

116

91

92

107

107

102

98

*99

99

93

4,888

163

9,700

July

80

Tff

72

65

60

59

54

51

49

46

40

38

*36

32

29

26

24

22

20

18

14

12

10

*8

7

6

5

4

4

3

2^

974

31.4

1,930

Aug.

2

2

1

1

1

1

1

1

1

1

1

1

1

1

*1

1

1

0

2

5_

5

4

5

4

4

4

5

4

4

*4

4

73

2.4

145

Sept.

4

3

3

3

3

3

3

3

2

2

2

2

2

2

2

2

2

2

0

0

0

0

0

0

0

0

0

0

0

0

45

1.5

89

Calendar year 1955: Max 96- Min o Mean 7.0 Ac-ft 5,030

Water year 1955-56: Max 268 Min 0 Mean 21.8 Ac-ft 15,830

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby stations.
ELK CREEK BASIN

Elk Creek above reservoir, near Irwin, Idaho

Location. Lat 43°19'25", long 111°06'40", in NW£ sec. 19, T. IS., R. 46 E., on right 

bank 2^ miles upstream from mouth and 11 miles southeast of Irwin.

Drainage area. 59.2 sq mi.

Records available. July to September 1917, June to September 1918, April to July 1934, 

August 1953 to September 1956. Published as Big Elk Creek near Blowout 1917-18 and 

as Elk Creek near Irwin 1934.

Gage. Water-stage recorder. Altitude of gage is 5,640 ft (from topographic map). July 

J7917 to September 1918, April to July 1934, staff gage at site 2-£ miles downstream at 

different datum.

Extremes. Maximum discharge during year, 628 cfs May 22 (gage height, 4.93 ft); minimum 

recorded, 10 cfs Mar. 5.

1917-18, 1934, 1953-56: Maximum discharge observed, 870 cfs June 15, 1918; minimum, 

5 cfs Dec. 15, 1953.

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

Cooperation. Water-stage-recorder graph and 10 discharge measurements furnished by 

Bureau of Reclamation.

Discharge ubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ao-ft

Oct.

36

36

*36

36

2T_

36

36

35

35

35

36

34

34

33

33

32

32

32

31

32

32

32

32

31

30

30

30

30

30

30

29

1,023

33.0

0.557

0.64

2,030

Nov.

27

26

26

27

28

28

*28

28

28

31

30

29

28

27

26

25

2S

28

30

32

35

32

31

30

29

29

29

28

28

27

856

28.5

0.481

0.54

1,700

Dec.

27

27

26

26

26

26

26

26

26

26

26

26

25

24

23_

23

24

25

26

28

30

33

40

54

45

40

38

35

30

36

41

934

30.1

0.508

0.59

1,850

Jan.

43

IT

*40

38

35

28

28

28

28

27

27

27

27

27

26

25

25

25

25

25

25

25

25

24

23

23

23

23

22

21

20

849

27.4

0.463

0.53

1,680

Feb.

19

Te

18

18

18

18

18

18

17

17

17

17

17

16

15

14

13

13

13

13

13

13

12

12

12

TS" 11

12

14

438

15.1

0.255

0.28

869

Mar.

15

12

13

13

*12

11

TT

12

12

12

11

11

11

11

11

12

13

14

15

16

18

20

23

27

30

36

34

33

33

34

32

568

18.3

0.309

0.36

1,130

Apr.

29

28

27

27

27

28

26

27

*27

30

35

35

40

42

53

65

66

75

87

103

118

132

134

148

146

132

129

124

107

99

2,146

71.5

1.21

1.35

4,260

May

94

99

107

*131

154

165

172

185

197

201

176

154

139

131

139

170

223

272

-387

510

527

*538

568

B3o

568

568

561

529

*529

522

559

9,825

317

5.35

6.17

19,490

June

552

54T

533

506

476

417

370

379

400

443

451

454

427

406

406

356

30O

290

302

304

*286

256

244

248

254

242

236

236

230

221

10,768

359

6.06

6.76

21,360

July

204

m

179

172

167

162

159

154

146

143

141

138

*134

129

124

119

116

110

103

101

100

96

92

91

89

89

92

91

90

88

QT_

3,899

126

2.13

2.46

7,730

Aug.

*86

86

83

81

78

77

76

72

71

70

71

70

69

68

*68

67

66

68

70

68

68

66

65

65

65

64

65

65

63

62

60

2,173

70.1

1.18

1.36

4,310

Sept.

'So 60

58

58

57

*57

57

57

57

58

58

58

57

*57

58

59

57

57

56

55

53

53

50

48

46

*45

47

49

47

46

1,635

54.5

0.921

1.03

3,240

Calendar year 1955: Max 227 Mlri 20 Mean 54.3 Cfsm 0.917 In. 12.44 Ac-ft 39,280

Water year 1955-56: Max 568 Mlri 11 Mean 95.9 Cfsm 1.62 In. 22.07 Ac-ft 69.65O

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 1-5, 11-13, 15-21, Dec. 2-12, 14-23, Dec. 30 

to Jan. 5, Jan. 7-12, 15, 16, Jan. 24 to Feb. 25, Mar. 5-25 (no gage-height record Feb. 3-25; discharge estimated on basis of records for nearby station).
BEAR CREEK BASIN 29

Bear Creek above reservoir, near Irwin, Idaho

Location. --Lat 43°16'45", long 111°13 I 15", in SEJj sec. 31, T. IS., R. 45 E., on left 

bank a quarter of a mile downstream from Elk Creek, 4 miles upstream from mouth, and 

9 miles southeast of Irwin.

Drainage area. 77.1 sq mi.

Records available . --July to September 1917, June to September 1918, May to July 1934,

April to October 1935, April to October 1936, August 1953 to September 1956. Published 

as Bear Creek near Irwin 1917-18, 1934-36.

Gage. Water-stage recorder. Altitude of gage is 5,640 ft (from topographic map). Prior 

£o Nov. 1, 1936, staff gage at site 4 miles downstream at different datum.

Extremes . --Maximum discharge during year, 736 cfs May 19 (gage height, 4.81 ft); minimum, 16 cfs Dec. 11 (gage height, 2.17 ft).

1917-18, 1934-36, 1953-56: Maximum discharge observed, 784 cfs May 5, 1936; minimum, about 1.0 cfs Jan. 20, 1954 (gage height, 1.08 ft), result of freezeup.

Remarks . Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. No diversions above station.

Cooperation . --Water-stage-recorder graph and 10 discharge measurements furnished by 

Bureau of Reclamation.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge In cubic feet per second)

Oct. 1 to Apr. 26

2.2 

2.5 

2.8

3.2 

3.6 

4.1

130

227

430

2.7 

3.0 

3.4

Apr. 27 to Sept. 3O

' 3.8

; 4.2

i 4.7

260 

42O 

678

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Ac-ftJ

Oct.

24

24

24

*24

25

24

24

24

24

24

26

25

24

24

24

24

24

23

23

23

24

24

24

23

22

23

23

23

23

23

23

736

23.7

0.307

0.35

1,460

Nov.

22

b21

22

22

22

22

22

22

22

22

23

22

b22

b22

b22

b21

b22

*b23

b24

24

26

25

24

23

22

22

23

23

23

22

677

22.6

0.293

0.33

1,340

Dec.

b22

t>21

b21

22

b22

22

22

b22

22

22

23

22

22

b20 b20"

b20

b22

24

25

24

24

35

132

T24

86

70

70

60

51

49

51

1,192

38.5

0.499

0.58

2,360

Jan.

47

44

42

40

*41

40

38

b38

. b37

37

36

35

36

35

b35

b34

b34

34

34

34

33

33

34

32

b33

34

34

b34

b33

b32

b3JL

1,114

35.9

0.466

0.54

2,210

Feb.

b30

b29

b29

b30

b30

b30

b30

b30

b30

b3O

" b30

b30

*b30

b30

29

b28

b28

b28

b28

28

28

28

28

27

TT

27

27

27

27

833

28.7

0.372

0.40

1,650

Mar.

28

27

28

28

27

b27

b27

b27

27

b27

b?6" b26

b26

b26

b26

b26

26

29

29

33

35

38

47

65

98

114

T5o

86

79

77

88

1,373

44.3

0.575

O.66

2,720

Apr.

94

88

*82

77

79

76

76

79

77

95

116

130

172

212

230

309

360

404

a44O

3470

a500

a54O

a560

3550"

3540

3530

*505

481

429

385

8,686

290

3.76

4.20

17,230

M3y

368

368

389

490

525

490

490

500

510

505

461

407

360

327

516

355

*420

476

567

658

599

605

583

578

546

495

443

407

394

368

360

14,340

463

6.01

6.93

28,440

June

351

327

300

282

260

236

210

190

179

173

173

168

166

158

*182

173

161

158

151

146

142

131

126

124

118

114

109

105

103

99

5,315

177

2.30

2.57

10,540

July

99

"95 101

92

90

88

82

80

79

79

77

77

74

71

68

66

66

*65

65

63

63

62

60

59

58

56

56

56

56

55

5Z_

2,210

71.3

0.925

1.07

4,380

Aug.

52

52

51

49

48

47

47

46

46

*44

43

42

42

42

46

46

46

46

47

47

*46

44

43

42

42

42

42

42

40

393~9

1,390

44.8

0.581

O.67

2,760

Sept.

37

35

35

35

34

34

34

34

33

32

32

32

*31

29

29

29

29

29

29

29

29

29

29

29

28

28

28

29

29

28

927

30.9

0.401

0.45

1,840

Calendar year 1955: Max 3OO Min 17 Mean 52.4 Cfsm 0.68O In. 9.27 Ac -ft 37,920

Water year 1955-56; Max 638 Mln 2O Mean 1O6 cfsm 1.37 m. 18.75Ac-ft 76,930

* Discharge measurement made on this day.

a Ko gage-height record; discharge estimated on basis of records for nearby stations.

b Stage-discharge relation affected by Ice.
30 SNAKE RIVER BAIN STEM

Palisades Reservoir near Irwin, Idaho

Location. 1st 43°20', long lime 1 , in NE$ sec. 17, T. IS., R. 45 E., on Snake. River 

3^ miles upstream from Palisades Creek and 6 miles southeast of Irwin.

Drainage area. 5,208 sq mi.

Records available. October 1955 to September 1956.

Sage. Pressure gage in powerhouse. Outside staff gages attached to concrete headwalls 

upstream from power and outlet tunnels. Datum of gage is at mean sea level (Bureau 

of Reclamation datum) which is 0.51 ft above mean sea level, datum of 1929, supplementary adjustment of 1947.

Extremes. Maximum contents during year, 79,570 acre-ft June 6 (elevation, 5,466.47 ft);

 minimum observed, 565 acre-ft Jan. 31 (elevation, 5,388.75 ft).

Remarks. Reservoir is formed by earth-fill, rock-faced dam. No controlled storage

 during year. Temporary storage occurred until head was sufficient to balance outflow 

through power and outlet tunnels with inflow to reservoir. Capacity 1,400,000 acre-ft 

between elevations 5,372 (river level at original outlet tunnels) and 5,620 ft. Dead 

storage 44,100 acre-ft at elevation 5,452.43 ft, elevation of completed outlet tunnels. 

Inactive storage for minimum power head, 199,600 acre-ft at elevation 5,497.5 ft. 

Water is used for irrigation in Snake River Valley.

Cooperation. Reservoir elevations and capacity table furnished by Bureau of Reclamation. 

Qontents, In acre-feet, at 8 a.m., Kater year October 1955 to September 1956

Day

1 

2 

3

4

5

6 

7

8

10

11

12

13

14

15

16

17

IB

19

20

21

22

23

24

25

26

27 

28

29 

30

31

tt

Oct.

855

5,392.5 

-63

Nov.

846

5,392.4 

-9

Dec.

899

5,393.0 

+53

Jan.

565

5,388.8 

-334

Feb.

754

5,391.3 

+189

Mar.

a2,OSO

+1,306

Apr.

-

-

-

_

-

2,170

2,480

2,680

2,820

3,820

3,900

4,290

4,750

5,160

4,420

5,020

5,400

S.720

4,800

5,160 

4,670

3,450

5,411.4 

+1,390

May

3.520 

3,686 

4,040

4,500

5,720

5,840

5,880

6,650

7,100

10,020

10,860

_

7,280

6,480

6,460

8,120

11,610

17,140

-

27,220

31,650

37,540

45,200

48,850

59,480

62.470 

61,966

60,480

57,880

5,458.4 

+54,430

June

59,160 

64,680 

71,340

76,900

78,780

79.570 

7?, 796

71,640

68,060

66,880

66,700

62,900

60,740

59,920

58,220

54,270

-

39,130

28,070

20,860

16,590

14,940

10,980

-

5.960

6,070

6,690 

8,690

10,900 

11,050

5,430.4 

-46,830

July

9,260

5, 850

_

5,610

5,140 

4,840

-

4,640

4,760

4,700

4,450

4,670

4,450

-

3,930

4,250

3,980

3,910

3,980

4,220

-

4,150

3,820

3,770

3,600

3,580 

3,580

3,620

2L.44Q

5,411.3 

-7,610

Aug.

5.400 

3,310 

3,150

2,980

-

2,820 

2,720

2,700

2,700

2,730

-

-

2,620

2,590

2,620

2,540

2,510

2,470

-

2,450

2,440

2,400

2,530

2,700

2,700

_

2,800 

2,860

2,560 

2,500

2.400

5,405.1 

-1,040

Sept.

2,330

2,370

2,370

2,500 

2.SSO

2,536

-

2,450

2,440

2,310

2,330

2,170

2,060

_

1,740

1,640

1,590

1,790

1,920

1,920

-

-

1,770

 1,460

1,390

1.140 

1,390

5,397.7 

-1,010

t Elevation, In feet, at end or month.

* Change In contents, In acre-feet.

a No gage-height recordj contents Interpolated.
SNAKE RIVER MAIN STEM 31

Snake River near Irwin, Idaho

Location. -Lat 43°21', long 111°13', in HE^r sec. 7, T. IS., R. 45 E., on right bank at

 Bureau of Reclamation headquarters, li miles downstream from Palisades Dam, 2 miles 

upstream from Palisades Creek, and 5 miles southeast of Irwin.

Drainage area. 5.225 sq mi.

Records available. --April to August 1934, March to November 1935, April to October 1936,

 March 1559 to September 1941, May 1949 to September 1956. Published as at Calamity 

Point, near Irwin" 1934 and 1939-41.

Average discharge. 7 years (1949-56) 7,078 cfs (5,124,000 acre-ft per year).

Gage. Water-stage recorder. Datum of gage is 5,353.00 ft above mean sea level, datum of

 1929, supplementary adjustment of 1947. Apr. 21 to Aug. 4, 1934, and Mar. 30, 1939, 

to Sept. 30, 1941, water-stage recorder at site 2^ miles upstream at different datum. 

Mar. 30, 1935, to Oct. 31, 1936, water-stage recorder at site 3^ miles downstream at 

different datum. May 1, 1949, to Mar. 22, 1950, staff gage at site 1,100 ft downstream at datum 1.9 ft higher.

Extremes. Maximum discharge during year, 31,800 cfs June 4-6; maximum gage height, 

13.31 ft June 4; minimum, 1,560 cfs Dec. 15 (gage height, 4.78 ft).

1934-36, 1939-41, 1949-56: Maximum discharge, that of June 4-6, 1956; minimum, 

1,210 cfs Jan. 7, 1955 (gage height, 4.51 ft).

Flood during early June 1894 was probably much higher than that of June 4-6, 1956.

Remarks . Records excellent except those for periods of ice effect, which are good. Plow 

partly regulated by Jackson Lake (see p. 14). About 93,000 acres in Wyoming and Idaho 

irrigated by diversions from tributaries above station.

Cooperation. Gage-height record and 6 discharge measurements furnished by Bureau of 

Reclamation.

Revisions. WSP 1217: Drainage area.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27 

28

29

30 

31

Total

Mean

Ao-ft

Oct.

2,660 

2,640

2,590

2,570

2,590

2,640

2,630 

2,610

2,570

2,560

2,570

2,570

2,560

2,540

2,540

2,500 

2,490

2,470

*2 , 450

2,450

2,490

2,560

2,540

2,470

2,400

2,340

2,520 

2,320

2,340

2,340

2,370

77,690

2,506

154,100

Nov.

2,320 

2,220

*2,230

2,280

2,310

2,310

2,310 

2,240

2,280

2,320

2,560

2,450

2,180

2,170

1,930

1,840 

2,170

2,110

2,540

2,570

2,830

2.860

2,610

2,490

2,390

2,370

2,470 

2,420

2,390

2,340

70,510

2,350

139,900

Dec.

2,360 

2,370

2,320

2,230

2,080

2,040

*2,100 

2,050

2,100

2,140

2,180

2,240

2,230

2,170

1.740

1,970 

2,140

2,200

2,290

2,370

2,290

2,490

4,000

6,640

5,480

4,680

4,360 

3,910

3,310

3,000

3,050

86,530

2,791

171,600

Jan.

5,100 

3,050

2,800

2,750

2,900

2,810

2,630 

2,520

2,450

*2,350

2,400

2,450

2,500

2,520

2,500

2,500 

2,500

2,490

*2,470

2,450

2,420

2,400

2,440

2,590

2,240

2,250

2,320 

2,200

1,940

2,050

1,900

76,670

2,473

152,100

Feb.

1,660 

1,650

1,700

1,800

1,900

1,980

2,050 

2,020

2,000

2,000

2,020

2,050

2,000

1,950

1,900

1,880 

1,880

1,930

2,000

2,050

*2,120

2,150

2,170

2,190

2,200

2,170

2,200 

2,200

2,200

-

58,020

2,001

115,100

Mar.

2,200 

2,200

2,250

2,250

2,200

2,120

2,080 

2,230

2,280

2,220

2,170

2,170

2,250

2,900

5,300

3,450 

3,600

5,550

3,460

3,500

3,590

*3,700

3,890

4,810

6,540

6.850

6,756 

6,420

6,540

6,420

6,690

114,160

5,683

226,400

Apr.

7,100 

6,920

6,680

6,540

6,710

6,600

6,510 

6,710

6,860

7,190

7,860

8,240

8,760

9,300

10,300

11,700 

*11,900

12 , 400

15,100

15,400

12,600

13,200

13,600

14,300

14.700

13,700

14,000 

15,300

12,300

11,200

307,680

10,260

610,300

May

11.200 

11,600

12,300

15,200

15,200

15,700

15,600 

15,800

*16,500

17,200

18,900

19,200

18,300

17,200

16,500

16,600 

17,900

19,600

21,400

22,900

23,800

*24,600

25,700

26,600

27,900

29,200

29.800 

29,600

*29,200

28,900

28,700

636,800

20,540

1,265,000

June

29,200 

50,000

30,800

31,600

*51,800

51,700

51,400 

50,500

50,000

29,900

29,800

29,200

29,000

*28,900

28,700

28,000 

27,100

25,500

25,800

22,000

21,500

20,700

19,500

17,000

15,900

15,900

16,800 

*18,100

19,500

19,400

762,600

25,420

1J513,000

July

19.000 

18,300

17,000

16,600

15,100

14,300

13,900 

13,500

13,600

13,700

13,500

13,200

*13,500

15,100

12,700

12,400 

12,600

12,300

12,200

12,400

12,700

12,800

12,500

12,100

12,000

11,600

11,500 

11,500

11,500

11,600

11,200

413,900

13,350

821,000

Aug.

11.100 

10,800

*10,500

10,100

9,680

9,490

9,300 

9,170

9,270

9,500

9,170

9,080

8,980

8,920

8,950

8,790 

8,660

8,500

8,370

8,400

8,570

8,400

8,820

9,240

9,240

9,500

*9,520 

9,400

8,690

8,440

8.180

284,150

9,165

563,600

Sept.

8,150 

8,310

8,310

8,310

8,54O

8,630

8.820 

8,660

8,470

8,340

8,150

7,860

7,800

7,400

6,740

6,170 

5,900

5,540

5,410

5,950

6,510

6,480

6,290

6,150

*5,730

4,990

4,820 

4,560

3,740

5.360

205,890

6,796

404,400

Calendar year 1955: Max 18,000 Mln 1,480 Mean 5,319 Ac-ft 3,850,000

Water year 1955-56 : Max 31,800 Mln 1,650 Mean 8,450 Ac-ft 6,134,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 7-10, Dec. 50 to Jan. 5, Jan. 9-13, 15-17, 

Jan. 30, 51, Feb. 2 to Mar. 6, Mar. 13-18.
32 SNAKE RIVER MAIN STEM

Snake River near Helse, Idaho

Location. Lat 43°36'45", long 111 039'05", In SW£ sec. 5, T. 3 N., R. 41 E., on left bank 

about 500 ft upstream f roirr Anderson canal headgate, 3 miles upstream from Helse, 

6 miles east of Ririe, and 23 miles upstream from Henrys Fork.

Drainage area. 5,752 sq mi.

Records available. September 1910 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317. Prior to 1911, published as South Pork of Snake River 

near Heise.

Gage. Water-stage recorder. Datum of gage is 5,015.3 ft above mean sea level, datum of 

1929. Prior to July 9, 1913, staff gage and July 9, 1913, to Sept. 29, 1922, waterstage recorder, at present site at datum 2.65 ft higher. Sept. 30, 1922, to Oct. 5, 

1933, water-stage recorder at present site at datum 2.0 ft higher than present datum.

Average discharge. 46 years, 6,888 cfs (4,987,000 acre-ft per year).

Extremes. Maximum discharge during year, 33,300 cfs June 4 (gage height, 9.22 ft); minimum daily, 1,900 cfs Feb. 2.

1910-56: Maximum discharge, about 60,000 cfs May 19, 1927, result of washing out of 

landslide on Gros Ventre River (gage height, about 16.0 ft, present datum); minimum, 

1,210 cfs Jan. 22, 1935 (gage height, 1.15 ft).

Flood during early June 1894 was probably as great as flood of May 19, 1927.

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

partly regulated by Jackson Lake (see p. 14). Station is above all irrigation diversions from main river except Riley ditch (5,660 acre-ft diverted during year) which 

diverts l| miles upstream from station. About 107,000 acres in Wyoming and Idaho 

irrigated by diversions from tributaries above station. Records of chemical analyses 

and water temperatures for the water year 1956 are given in WSP 1453.

Revisions. WSP 1217: Drainage area. WSP 1347: 1912.

Discharge, In cubic feet per second, water year October 1955 to SepU 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2,950

2,880

2,840

2,820

2,820

2,880

2,900

2,860

2,840

2,840

2,860

2,860

2,840

2,820

2,800

2,780

2,760

2,760

2,760

2,760

2,780

2,880

2,900

2,860

2,800

*2,740

2,760

2,740

2,760

2,760

2,760

87,370

2,818

173,300

Nov.

 2,760

2,700

2,640

2,660

2,680

2,700

2,700

2,660

2,630

2,660

2,800

2,880

2,640

2,500

2,500

2,280

2,550

2,520

2,570

2,880

3,060

5,520

5,100

2,880

2,760

2,640

2,700

2,760

*2 , 700

2,660

81,490

2,716

161,600

Dec.

2,660

2,680

2,640

2,550

2,420

2,390

2,400

2,440

2,390

2,450

2,470

2,480

b2,500

b2,450

b2,400

b2,250

b2,400

2,450

2,480

2,590

*2 , 550

2,610

3,600

6,770

6,580

5,470

4,990

4,670

3,950

3,500

3,190

97,170

3,135

192,700

Jan.

5,570

3,520

5,100

2,950

5,120

5,170

2,970

2,780

2,700

2,570

2,660

2,760

2,820

2,820

2,800

b2,8OO

b2,800

2,780

2,740

2,700

2,680

2,660

2,700

2,680

2,570

2 , 540

2,650

2 , 500

2,570

b2,550

b2,250

85,660

2,763

169,900

Feb.

b2,100

bl,900

bl,950

b2,050

b2,120

b2,200

b2,500

b2,250

*b2,200

b2,200

b2,250

b2,250

b2,200

b2,150

b2,100

b2,050

b2,050

b2,100

b2,150

b2,200

b2,270

b2,500

2,510

2,540

2,560

2,520

2,520

2,560

*2,540

------

63,690

2,196

126,500

Mar.

2,560

2,590

 2,420

2,420

2,400

2,500

2,250

2,500

2,570

2,500

2,260

2,240

2,560

3,050

3,590

5,550

3,710

5,690

5,660

5,690

5,780

5,970

4,160

4,770

6,750

7,580

7,550

7,000

*6,770

6,850

7,030

120,860

5,899

239,700

Apr.

7,450

7,490

7,170

7,000

7,050

7,120

6,940

7,060

7,250

7,460

8,150

8,650

9,070

9,700

10,800

12,200

12,800

15,400

14,200

14,900

14,200

14,600

15,100

15,700

*16,500

15,500

15,500

15,000

15,800

12,500

534,180

11,140

662,800

May

12,500

12,500

15,200

14,OOO

16,100

16,900

16,900

17,000

17,600

18,500

19,700

20,200

19,400

18,500

17,500

17,400

18,600

20,500

22,500

24,200

25,400

26,500

27,500

28,500

*29,500

50,600

51,000

31,000

50,700

50,400

50,000

675,400

21,720

1,356,000

June

30,000

51,000

52,000

55,100

*55,100

35,100

52,700

31,900

31,100

31,100

30,800

30,600

29,900

29,900

29,800

29.2OO

28,300

26,800

24,900

22,900

21,900

*2 1,500

20,000

18,100

16,400

16,500

16,800

18,200

19,400

19,700

790,500

26,340

1,568,000

July

19,500

18,900

17,700

17,200

15, 800

14,900

14,500

14,100

14,000

14,500

14,200

13,800

*14,000

15,800

13,400

15,000

15,200

15,000

12,800

12,800

15,200

15,300

13,100

12 , 700

12,500

12,300

12,100

12 , 000

12,100

12,100

11,900

432,200

15,940

857,500

Aug.

11,700

11,500

11,100

10.8OO

10,300

10,OOO

9,800

9,660

9,700

9,770

9,660

9,600

9,500

*9,410

9,570

9,280

9,160

9,010

8,890

8,860

8,890

8,850

9,150

9,660

9,660

9,660

9,900

10,OOO

9,280

9,040

8,740

299,860

9,673

594,800

Sept.

8,680

8,800

8,8OO

8,850

8,850

9,040

9.510

9,250

9,01O

8,950

*8,850

8,510

8,450

8,070

7,640

6,910

6,610

6,300

5,960

6,500

6,970

7,030

6,890

6,660

*6 , 520

5,660

5,470

5,280

4,610

4,040

222,210

7,407

440,700

Calendar year 1955: Max 18,5OO Min 1,800 Mean 5,687 Ac-ft 4,117,000

Water year 1955-56: Max 33,100 Mln 1.9OO Mean 8,985 Ac-ft 6,523,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice
HENRYS FORK BASIN 33

Henrys Fork near Lake, Idaho

Location. Lat 44°36', long 111 0 21', in SW^- see. 26, T. 15 N., R. 43 E., on left bank 

a quarter of a mile downstream from Henrys Lake Dam and 4 miles south of former 

Lake post office.

Drainage area. 98 sq mi, approximately, including 6 sq mi of Dry Creek basin.

Records available. May 1920 to September 1956 (prior to October 1930 irrigation seasons 

only).Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 6,450.62 ft above mean sea level, levels 

b"y Bureau of Reclamation (Corps of Engineers benchmark). Prior to September 1922, 

staff gage at site 3 miles downstream and below mouth of Dry Creek. ,

Average discharge. 27 years, revised (1929-56), 45.0 cfs (32,580 acre-ft per year).

Extremes.--Maximum discharge during year, 294 cfs July 25, 26 (gage height, 3.42 ft); 

minimum observed, 9 cfs on many days, but may have been less during period of no gageheight record.

1920-56: Maximum discharge, 907 cfs June 13, 1926 (gage height, 5.40 ft); no flow 

part of Sept. 17, 18, 1952.

Outflow from Henrys Lake was reported to have ceased entirely late in summer of 

1889.

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

Flow regulated by Henrys Lake (see p. 44). Since 1923, floodwaters of Dry (Tyghee) 

Creek have been diverted at times into Henrys Lake (small diversion in 1956).

Revisions. WSP 1217: Drainage area.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tbtal

Mean

Ac -ft

Oct.

14

14

14

14

14

14

14

14

14

*14

14

14

14

14

14

14

14

14

12

9.

9

9

9

9

9

9

9

9

9

9

9

372

12.0

738

Nov.

9

9

9

9

9

9

9

9

9

9

9

*9

_

-

_

_

_

-

_

_

_

_

-

_

_

_

270

9.0

536

Dec.

t9.5

288

89.3

571

Jan.

341

ell

676

Feb.

1-14.2

------

377

e!3

748

Mar.

_

_

_

-

-

_

_

-

-

-

_

-

_

-

_

_

-

_

_

__

-

_

*15

15

15

15

15

450

ell. 5

893

Apr.

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

450

15.0

893

May

15

15

15

15

15

15

15

15

15

15

15

15

15

14

TI

14

14

14

14

15

15

15

15

15

15

15

*15

14

14

14

14

455

14.7

902

June

15

15

16

17

17

18

17

15

15

16

16

16

17

17

17

19

£2

22

23

23

25

26

26

26

28

28

28

29

30

51

630

21.0

1,250

July

30

28

32

36

*35

35

34

34

33

33

35

38

36

35

35

34

32

31

29

28

27

26

25

£4

*135

*203

T23

123

124

124

*126

1,723

55.6

3,420

Aug.

1£6

1£6

1£6

126

126

124

123

1£3

122

1£2

1£0

120

116

115

115

115

*113

112

112

112

11£

111

110

108

106

104

103

104

103

102 

To?

3,559

115

7,060

Sept.

102

100

99

*99

98

98

98

98

96

95

58

17

IT

17

17

17

17

17

17

17

17

*17

17

17

17

17

17

17

17

17

1,364

45.5

2,710

Calendar year 1955: Max 412 Min 9 Mean 64.1 Cfsm In. Ac-ft 46,410

Water year 1955-56: Max 203 Min 9 Mean 28.1 Cfsm In. Ac-ft 20,400

* Discharge measurement made on this day.

t Result of discharge measurement. 

e Estimated.

Note. Ho gage-height record Nov. 13 to Mar. 26; discharge estimated on basis of 2 discharge 

measurements.
34 HENRYS PORK BASIN

Island Park Reservoir near Island Park, Idaho

Location. Lat 44°25'11", long 111 0 23'52", a quarter of a mile south of quarter corner 

between sees. 28 and 29, T. 13 N., R. 43 E., in gatehouse shaft at dam on Henrys Pork, 

three-eighths of a mile upstream from Buffalo River and 2 miles west of Island Park 

Post Office.

Drainage area. 481 sq mi.

Records available. November 1938 to September 1956.

Gage. Electric tape gage read once daily. Datum of gage is at mean sea level (levels by 

Bureau of Reclamation).

Extremes. Maximum contents during year, 137,475 acre-ft May 30 (elevation, 6,303.28 ft), 

minimum, 27,055 acre-ft Oct. 6-8 (elevation, 6,280.62 ft).

1938-56: Maximum contents, 138,540 acre-ft May 12, 1955 (elevation 6,303.41 ft); 

minimum after first filling of reservoir in May 1939, 16,855 acre-ft Sept. 27, 1940 

(elevation, 6,274.22 ft).

Remarks. Reservoir is formed by earth-fill, rock-facet dam. Storage began Nov. 15, 1938. 

Capacity, 127,265 acre-ft between elevations 6,239 ft (normal low-water level with 

outlet gates open) and 6,302 ft (crest of spillway). Natural flow passing through 

reservoir when outlet gates are open prevents withdrawal of storage to elevation 

6,230 ft (sill of lower outlet). Dead storage negligible. Water is used for irrigation of lands in Premont-Madison irrigation district between Ashton and Rexburg.

Cooperation. Reservoir elevations and capacity table furnished by Bureau of Reclamation. 

Revisions. WSP 1217: Drainage area.

Total contents, in acre-feet, at 8 a.m., water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30 

31

(t) 

(*)

Oct.

27,115 

27,115

27,095

27,095

27,075

27,055

27,055

27,055

27,075

27,075

27,095

27,095

27,095

27,115

27,380

28,975

29,810

30,700

31,560

32,515

32,495

32.565

32,565

32,565

32,495

32,470

32,570

32,470

32,445 

32,445

32,375 

6,283.02 

+5,260

Nov.

32,575 

32,910

33,510

34, 605

35,500

36,450

37,195

38,015

38,850

39,675

40,615

41,420

42,270

43,040

43,930

44,800

45,315

46,215

47,095

48,180

49,135

49,965

51,115

52,050

53,045

53,815

65,675

55,510

56,350 

57.165

5,290.56 

+24,790

Dec.

S8.O80 

59^005

59,990

60,810

61,640

62,430

63,375

64,190

65,065

65,895

66,740

67,595

68,460

69,285

69,910

69,700

69,700

69,545

69,440

69,595

69,595

69,700

69,700

70,745

71,275

71,540

71.750

71,750

71 , 750 

71 , 750 

71,750

6,293.59 

+14,585

Jan.

72.070 

72,235

72,235

73,260

74,355

75,410

76,360

77,260

78,230

79,150

79,845

80,780

81,605

82.S75

83,810

84,960

85,870

86,730

87,720

88,590

89,470

90, 350

91,300

92,195

93,160

94,O65

95,040

95,895

96,750 

97,545

98,405 

6,298.01 

+26,655

Feb.

99,210

99,815

100,420

101,300

102,185

102,940

103,560

104,180

104,800

105,565

106,475

106,615

106,825

107,175

107,175

107,315

107,385

107,455

107,525

107,670

107,880

107,880

107,950

108,090

108,165

108,305

108,445

108,520

108,660

6,299.50 

+10,255

Mar.

108,800

108,800

108,875

108,875

108,875

108,945

108,945

109,015

109,015

109,085

109,085

109,085

109,155

109,230

109,300

109,370

109,370

109,440

109,440

109,515

109,585

109,585

109,655

109,725

109,800

109,870

109,940

110,015

110,155 

110,230

110,230 

6,299.72 

+1,570

Apr.

110,370

110,440

110,515

110,585

110,655

110,655

110,730

110,800

110,870

111,015

111,160

111,305

111,735

112,025

112,310

113,040

113,620

114,280

114,865

115,965

117,220

118,485

119,835

121,500

123,250

125,010

127,185

13O,09O

131,670 

132,870

6,302.71 

+22,640

May

133,590

133,910

134,235

134,475

135,045

135,530

135,770

135,770

135,690

135,690

136,175

136,260

136,260

136,015

135,855

135,770

135,450

135,450

135,365

135,770

135,855

135,855

136,175

136,500

136,905

137,150

137,230

137,230

137,230 

137,475 

137,230

6,303.25 

+4,360

June

137,070

136,745

136,745

136,340

136,340

135,770

135,690

135,530

135,045

134,960

134,555

134,555

134,155

134,155

134,155

134,155

134,155

134,075

133,910

133,750

133,910

133,910

133,750

133,910

133,750

133,670

133,590

133,430

133,350 

133,350

6,302.77 

-3,880

July

133,030 

132,950

133,110

133,110

133,110

133,030

133,030

132,950

132,950

131,990

130, 640

129,615

128,360

127,655

126,485

125,320

123,935

121,650

118,860

116,410

113,985

112,170

110,440

108,590

107,175

105,705

104,455

103,145

101,575 

100,355 

99,145

6,298.12 

-34,205

Aug.

97,875

95J825

95,105

94,390

93,610

92, 900

62,195

91,490

90,795

9O,1OO

89,405

88,655

87,970

87,410

86,790

86,605

86,420

86,235

86,055

85,810

85,565

85,325

84,96O

85,325

85,080

84,840

84,415

83,950 

83,950 

83,570

6,295.67 

-15,575

Sept.

85,510

83^450

83,450

83,270

82,850

82,200

81 , 430

80,780

80,195

79,965

80,020

79,905

79,845

79,730

79,615

79,615

79,615

79,675

79,615

79,675

79,675

79,845

79,845

79,790

79,790

79,730

79,675

79,905 

80,02_0

6,295.07 

-3,550

Calendar year 1955. ................... t -9,500 

Water year 1955-56 .................... * +52 , 9O5

t Elevation, in feet, at end of month. 

* Change in contents, In acre-feet.
HENRYS FORK BASIN 35

Henrys Fork near Island Park, Idaho

Location. Lat 44°24'59", long lll°23'4l", in SW£ sec. 28, T. 13 N. , R. 43 E., on left 

bank an eighth of a mile downstream from Island Park Dam, a quarter of a mile upstream from Buffalo River, and 1 mile west of Island Park Post Office.

Drainage area. 481 sq mi.

Records available. January 1933 to September 1956.

Gage . --Water-stage recorder. Altitude of gage Is 6,225 ft (from river-profile map). 

Prior to May 15, 1935, staff gage at site three-quarters of a mile upstream at different datum. May 15 to Nov. 30, 1935, water-stage recorder at site 1,000 ft downstream at different datum.

Average discharge. 23 years, 541 cfs (391,700 acre-ft per year).

Extremes. Maximum discharge during year, 1,860 cfs July 17 (gage height, 5.11 ft); minimum dally, 10 cfs Jan. 4 to Feb. 10.

1933-56: Maximum discharge, 2,770 cfs Apr. 26, 1946 (gage-height, 6.15 ft); minimum dally, 1 cfs Nov. 16 to Dec. 7, 1938.

Remarks. --Re cords good. Flow regulated by Henrys Lake (see p. 44) and Island Park Reservoir (see preceding page). About 14,000 acres irrigated by diversions above station, 

a considerable portion of which consists of partly sub-Irrigated meadows.

Cooperation. Gage-height record and 2 discharge measurements furnished by Bureau of 

Reclamation.

Revisions. WSP 1217: Drainage area.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

509 

486

486

486

486

486

481

468

468

468

*463

463

463

250

23

23

23 

*23

23

316

463

463

463

463

463

463

463

463

463

463 

463

11,987

387

23,780

Nov.

~42 349 

42

42

42

42

42

42

42

42

42

*20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

1,149

38.3

2,280

Dec.

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

312

458 

458

458

458

458

458

458

458

458

*450

450

450

450

450

450

7,434

240

14,750

Jan.

450 

450

157

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

1,337

43.1

2,650

Feb.

10

To

10

10

10

10

10

10

10

10

175

303

329

351

351

351

351 

346

346

346

346

346

346

346

346

346

346

*351

351

6,473

223

12,840

Mar.

351 

351

351

351

351

351

351

351

351

351

351

351

351

351

351

351

351 

351

351

351

351

351

351

351

351

351

 351

351

351

351

351

10,881

351

21,580

Apr.

351 

351

351

351

351

351

351

351

351

351

361

351

351

351

351

355

360 

360

360

364

364

364

364

364

364

368

152

*155

338

472

10,369

346

20,570

May

562 

610

655

728

782

856

890

930

930

945

981

976

950

. 920

885

865

851 

851

860

895

920

950

986

1,030

1,090

1,130

*1,160

1,160

1,180

1,170

1,130

28,828

930

57,180

June

1,100 

1,050

997

976

940

895

851

826

787

772

743

723

694

674

660

674

669 

660

645

640

635

640

620

610

591

581

567

557

557

...~

21,858

729

43,350

July

509 

500

533

528

*519

504

500

495 85"4

1,200

870

890

865

940

1,030

1,080

1,360

1,750

1,750

1,730

,460

,340

,340

,260

,180

,220

,310

,290

,290

,250

, 180

32,477

1,048

64,420

Aug.

1,140 

1,060

1,020

956

956

956

956

956

956

956

956

956

940

885

841

792

718 

718

718

718

718

704

655

620

625

640

723

846

704

635

635

25,659

828

50,890

Sept.

543 

543

543

*543

640

au841

836

836

772

674

620

538

538

533

500

490 

490

490

490

490

*320

486

486

481

476

*476

458

445

445

16,864

562

33,450

Calendar year 1955 : Max 2,500 Mln 9 Mean 591 Ac-ft 427,700

Water year 1955-56 : Max 1,750 Mln 10 Mean 479 Ac-ft 347,700

* Discharge measurement made on this day.

Note. Discharge computed from once-daily staff-gage readings Oct. 15-19, Nov. 2 to Apr. 26.
36 HENRYS PORK BASIN

Henrys Fork near Ashton, Idaho

Location. Lat 44°05', long 111°30', in sec. 28, T. 9 N., R. 42 E., on right bank a 

quarter of a mile downstream from power plant and 3 miles west of Ashton.

Drainage area. 1,040 sq mi.

Records available. April 1890 to June 1891, August 1902 to June 1909, April 1920 to 

September 1956 (irrigation seasons only 1920-26). Monthly discharge only for some

periods, published in WSP 1317. Published as Henry Fork rk in

1890-91 and as North Fork of Snake River near Ora 1902-9.

canyon, above Pall River

Gage.--Water-stage recorder. Altitude of gage is 5,095 ft (from river-profile map). 

TTpril 1890 to June 1891, staff gage at site 6 miles downstream at different datum. 

August 1902 to Apr. 15, 1921, staff gage and Apr. 16, 1921, to May 3, 1930, waterstage recorder, at site 1-J- miles downstream from present site at different datum.

Average discharge.--36 years (1902-8, 1926-56), 1,351 cfs (978,100 acre-ft per year).

Extremes.--Maximum discharge during year, 3,240 cfs May 8, 9; maximum gage height. 7.62 ft 

July 28; minimum discharge, 73 cfs July 12 (gage height, 4.95 ft); minimum daily, 

510 cfs Feb. 1.

1890-91, 1902-9, 1920-56: Maximum discharge, 6,220 cfs May 7, 1925 (gage height, 

3.11 ft site and datum then in use); minimum, 65 cfs Oct. 16, 1935 (gage height, 

4.59 ft); minimum daily, 440 cfs Dec. 5, 1931.

Remarks. Records good. Diurnal fluctuation caused by powerplant above station. Plow 

regulated by Henrys Lake (see p. 44) and Island Park Reservoir (see p. 34). About 

18,000 acres irrigated by diversions above station.

Cooperation. Gage-height record during nonirrigation season furnished by Utah Power and 

Light Co.

Revisions (water years). WSP 1217: Drainage area. WSP 1347: 1890-91.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,080 

1,090

1,030

1,090

1,130

1,120

1,100

1,120

1,090

 1,090

1,130

1,170

1,050

1,130

825

544

618

618

686

686

1,130

1,240

1,210

1,170

1,120

1,160

1,170

1,120

1,130

1,140

1,130

32,117

1,036

63,700

Nov.

1.080 

692

718

686

676

686

707

665

676

676

686

656

437

847

528

519

707

718

770

792

952

728

707

686

*686

696

676

686

696

718

21,353

712

42,350

Dec.

718 

718

707

627

686

676

646

686

686

665

696

686

676

528

589

1,100

1,190

1,140

1,190

1,200

1,190

1,280

1,720

1,450

1,230

1,200

1,210

1,160

1,060

1,060

1,320

29,690

958

58,890

Jan.

1,170 

1,160

1,120

*781

707

718

686

696

598

718

760

738

728

696

728

738

738

707

696

707

696

686

749

665

636

656

686

665

646

646

636

22,957

741

45,530

Feb.

510 

598

562

589

686

760

686

646

646

656

707

916

1,040

1,060

1,060

952

1,060

1,050

1,090

*1,100

1,100

1,120

1,120

1,060

1,090

1,150

1,080

1,090

1,120 " -----

26,284

906

52,130

Mar.

1,090 

1,100

1.160

1,09O

1,080

1,010

988

1,140

1,120

1,050

952

1,010

1,050

1,050

1,040

1,050

1,040

1,050

*1,030

1,050

1,030

1.O8O

1,040

1,O8O

1,130

1,140

1,120

1,060

1,090

1,080

1,100

33,100

1,068

65,650

Apr.

1,080 

1,060

1,060

1,100

1,160

1.050

1,170

1,200

1,200

1,280

1,340

1,360

1,390

1,440

1,500

1,660

*1,660

1,810

1,980

2,200

2,340

2,490

2,440

2.610

2,400

2,220

2,400

2,020

2,200

2,2OO

51,020

1,701

101,200

May

2.300 

2,340

2,360

2,550

2,740

2,800

2,820

2,950

*2,950

2,970

2.990

2,970

2,740

2,570

2,550

2,570

2,630

2,610

2,700

2.T20

2,740

2,720

*2,720

2,630

2,610

2,630

2,660

2,660

2,570

2,530

2,490

82,790

2,671

164,200

June

2.560 

2,340

2,260

2,240

2,140

2,100

2,OOO

1,840

1,880

1,810

1,750

1,720

1,680

1,650

1,630

1,700

1,680

1,550

*1 , 480

1.480

1,550

1,600

1,450

1,470

1.440

1,400

1,360

1,380

1,390

1.560

51 , 650

1,722

102,400

July

1,340 

1,360

1,400

1,380

1,380

1,340

1,320

1,300

*1 . 280

2,060

2,000

1,680

1,750

1,750

1,600

1,840

2,040

2,510

2.680

2,630

2,570

2,240

2,240

2,200

*2,000

1,960

2,140

2,120

2,160

2,180

2,040

58,490

1,887

116,000

Aug.

1.960 

1,900

,840

,770

,720

,700

,700

* ,720

1,700

1,720

1,700

1,660

1,660

1,660

1,550

1,470

1,420

1,360

1,340

1,400

1,320

1,380

1,330

1,240

1,240

1,280

1,300

*1,520

1,470

1,320

1,240

47,590

1,535

94, 390

Sept.

1,360 

,170

,130

,130

,160

,420

,530

,610

1,610

1,650

1,480

1,450

1,280

1,210

1,210

1,230

1,200

1,170

*1 , 230

1,200

1,200

1,140

1.030

1,210

1,230

1,230

1,170

1,260

1,200

1,170

38,150

1,272

75,670

Calendar year 1955 : Max 3,190 Mln 519 Mean 1,356 Ac-ft 981, 9OO

Water year 1955-56: Max 2,990 Mln 510 Mean 1,353 Ac-ft 982,100

Discharge measurement made on this day.
HENRYS PORK BASIN 37 

Diversions from Pall River above gaging station near Squirrel, Idaho

Above Squirrel gaging station two canals divert water from Pall River for irrigation. 

Records available for part of each irrigation season from 1919 to 1956. Discharge of 

canals computed from daily or twice-weekly staff-gage readings, or interpolated, and 

combined to show total diverted flow. Records good.

Day May June July Aug. Sept. Day May June

1

2

3

4

5

6

7

e

9

10

11

12

13

14

15

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

66

66

66

72

121

137

185

215

258

264

269

275

275

275

278

256

256

244

212

203

213

224

231

239

239

249

241

260

265

262

276

275

265

264

' 264

263

259

258

252

251

234

219

218

197

197

147

148

104

105

105

109

110

110

107

108

108

109

86

86

82

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Runoff In acre-feet. ..............................

0

0

0

0

0

0

0

0

0

0

0

96

64

59

59

54

659

248

221

232

259

259

248

242

233

235

235

203

245

256

256

256

12,790

July

258

265

279

279

278

270

285

284

285

290

291

292

293

274

297

284

16,060

Aug.

198

186

188

189

160

183

184

184

184

200

187

186

153

146

146

146

[12,920

Sept.

82

82

83

83

83

83

83

83

83

83

48

65

65

66

65

5,480

The season: Max Ac-ft 47,910

Fall River near Squirrel, Idaho

Location. Lat 44°04'15", long 111°14'25", in NE£ sec. 34, T. 9 N., R. 44 E., on right 

bank a quarter of a mile upstream from road bridge, half a mile downstream from headgates of Marysville Canal, 4 miles northeast of Squirrel, and 10 miles upstream from 

Conant Creek.

Drainage area. 351 sq mi.

Records available.--August 1902 to June 1909 (gage heights only prior to October 1904), 

May 1918 to September 1956. Monthly discharge only for some periods, published in 

WSP 1317. Published as at Wilson's Mill, near Marysville" 1902, as "near Marysville" 

1903, and as "at Fremont" 1904-9.

Gage.--Water-stage recorder. Datum of gage is 5,589 ft above mean sea level, datum of 

1929. Prior to Jan. 1, 1904, staff gage at site 3 miles upstream at different datum. 

Jan. 1, 1904, to Nov. 6, 1937, staff gage 200 ft upstream from present site at different datum. Nov. 7, 1937, to Oct. 7, 1948, staff gage 100 ft downstream from present 

site at datum 0.29 ft lower than present datum.

Average discharge.--42 years (1904-8, 1918-56), 754 cfs (545,900 acre-ft per year).

Extremes.--Maximum discharge during year, 3,890 cfs June 2 (gage height, 4.76 ft); minimum, 221 cfs Mar. 6 (gage height, 0.62 ft).

1904-9, 1918-56: Maximum discharge observed, 6,440 cfs June 27, 1927; minimum 

observed, 72 cfs Feb. 9, 1930.

Remarks. Records good. Flow since October 1939 partly regulated by Grassy Lake (see 

p. 44). About 16,000 acres irrigated from two diversions above station.

Revisions (water years). WSP 1217: Drainage area. WSP 1347: 1905.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

1

2

3

4

5

6

7

8

29

30

31

Total

Mean

Ac-ft

Oct.

415

415

415

410

415

410

405

405

400

*400

440

415

405

400

400

396

391

391

391

485

445

475

445

415

410

415

425

415

410

42U

420

12,899

416

25,580

Nov.

425

445

465

465

470

450

445

440

445

460

475

445

420

410

400

430

500

516

522

594

718

588

538

528

*516

516

511

506

511

511

14,665

489

29,090

Dec.

511

511

495

480

485

490

480

490

490

475

475

475

460

425

430

480

490

495

495

490

480

533

666

737

626

581

581

550

511

506

533

15,926

514

31,590

Jan.

506

5JJ.

490

*495

506

490

485

485

475

480

475

475

475

470

465

465

465

465

460

450

445

445

445

430

425

425

425

420

410

400

390

14,248

460

28,260

Feb.

380

380

385

390

395

400

400

400

395

390

390

390

395

395

390

390

385

385

385

*388

390

395

395

395

390

390

390

390

390

-

11,333

391

22,480

Mar.

390

390

395

395

390

380

375

375

380

380

385

385

385

385

385

387

390

395

*400

405

400

405

420

435

450

465

450

440

430

425

430

12,502

403

24,800

Apr.

445

435

435

430

435

435

430

440

445

475

522

555

581

640

744

828

*820

888

985

1,100

1,250

,410

,480

,650

,570

,490

,630

,610

,480

,280

26,918

897

53, 390

May

1,230

1,260

1,390

1,620

1,960

2,020

2,090

2,310

*2,310

2,470

2,300

1,940

1,680

1,580

1,690

1,940

2,230

2,500

2,740

2,930

3,160

3,350

*3,440

3,480

3,410

3.490

3,390

3,290

3,260

3,080

3,140

76,680

2,474

152,100

June

3,440

5,720

3,650

3,430

3,290

*3,030

2,580

2,520

2,780

2,720

2,780

2,890

2,970

2,800

2,800

2,760

2,330

1,890

1,900

2,130

2,390

2,080

1,700

1,780

2,050

1,880

1,800

1,800

1,700

Ij690

75,280

2,509

149,300

July

1,480

,490

,550

,260

,180

,110

,100

,070

*1,030

1,000

952

938

945

900

848

804

769

748

727

713

706

699

685

678

666

666

652

646

646

633

626

27,897

900

55,330

Aug.

633

640

640

626

633

626

614

*607

600

600

607

607

614

620

620

626

633

620

626

633

607

600

594

581

588

594

633

678

659

659

646

19,264

621

38,210

Sept.

678

678

699

*699

685

678

678

678

672

692

706

713

692

692

672

640

652

626

620

620

614

614

607

626

633

620

*614

666

685

659

19,808

660

39,290

Calendar year 1955: Max 2,980 Mln 350 Mean 707 Ac-ft 511,800

Water year 1955-56: Max 3,720 Mln 375 Mean 895 Ac-ft 649,400

Discharge measurement made on this day. 

Note. Stage-discharge relation affected by Ice Nov. 13-16, Dec. 14-20, Ja 

Mar. 18.

13-16, Jan. 18 to
38 HENRYS FORK BASIN

Diversions from Fall River between Squirrel and Chester gaging stations, Idaho

Between Squirrel and Chester gaging stations, nine canals divert water from Fall River 

for irrigation. Records available for part of each irrigation season from 1919 to 1956. 

Discharge of canals computed from daily or twice-weekly staff-gage readings, or interpolated, and combined to show total diverted flow. Records good.

Discharge, In cubic feet per second, 1956

Day

1

2

7

9

10

Tota

Runo

The

May

195

168

201

201

188

174

201

197

220

216

234

232

259

276

I......

ff in a

season:

June

789

790

750

837

821

826

851

863

888

897

917

925

943

956

964

cre-feet

July

800

778

560

499

502

531

490

534

539

573

517

530

541

667

666

Aug.

603

598

584

583

573

537

558

525

558

542

472

472

440

478

463

Sept.

391

392

371

347

359

358

357

358

360

358

385

385

372

366

369

Day

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

in

May 365'

339

185

285

465

499

573

775

758

629

624

776

773

665

696

742

12,239

24,280

June

840

702

713

785

847

836

773

755

760

775

769

590

585

768

805

24,320

48^240

July

674

642

654

601

580

585

580

556

568

564

580

623

612

618

594

600

36,410

Aug.

504

483

454

439

438

425

408

404

393

396

408

403

388

392

395

574

29j_140

Sept.

326

368

539

554

534

553

332

329

329

292

288

504

299

503

297

20,500

Fall River near Chester, Idaho

Location. Lat 44°01', long 111°34', in sec. 13, T. 8 N., R. 41 E., on right bank 1,000 ft

upstream from highway bridge, half a mile upstream from mouth, and If miles north of

Chester.

Drainage area.--520 sq mi, approximately.

Records available.--April 1920 to September 1956 (irrigation seasons only). 

Gage. Water-stage recorder. Datum of gage is 5,051.9 ft above mean sea level, datum of

1929. Prior to Aug. 9, 1920, staff gage 200 ft downstream at same datum. Aug. 9,

1920, to Apr. 28, 1921, staff gage at present site and datum. 

Extremes. Maximum discharge during season, 3,490 cfs June 2 (gage height, 5.00 ft);

minimum, 122 cfs July 28, 30 (gage height, 1.57 ft).

1920-56: Maximum discharge recorded, 6,380 cfs June 27, 1927 (gage height,

6.60 ft); minimum recorded, 9 cfs Aug. 7, 1923 (gage height, 1.01 ft). 

Remarks. Records excellent except those for Sept. 28-30 which are good. Plow since

0"cTo~ber 1939 partly regulated by Grassy Lake (see p. 44 ). About 42,000 acres of land

irrigated by diversions above station. Station is below all diversions from Pall

River. 

Revisions. W3P 1217; Drainage area.

Rating table, Apr. 30 to Sept. 30, 1956 (gage-height, in feet, and discharge, 

in cubic feet per second)

2.0 

2.5

127

265

515

3.0 

4.0 

5.0

900

1,990

3,560

Discharge, in cubic feet per second, 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Apr . May

1,410

1,410

1,540

1,760

2,250

2,310

2,300

2,620

*2,550

2,740

2,620

2,300

1,960

1,760

1,820

June

2,930

5.520

5,290

3,020

2,800

2,520

2,050

1,850

2,050

2,020

2,090

2,140

2,260

2,100

1,990

July

909

900

1.140

963

891

786

963

837

666

615

574

567

522

410

342

AUR.

TTg- 141

162

162

188

195

172

168

158

162

225

261

270

261

261

Sept.

365

585

410

416

405

395

595

405

405

400

416

427

416

400

405

Day

16

17

18

19

20

21

22

25

24

25

26

27

28

29

50

51

Total ............................................. 

Mean ..............................................

Runoff in acre-feet ...............................

Apr.

tl,470

-

May

2,030

2,530

2,660

2,850

2,910

3,100

5,290

*5,240

3,250

3,250

3,250

3,170

3,020

3,070

2,900

2,780

78,410 

2,529

155,500

June

2,060

1,840

1,380

*1,250

1,370

1,630

1,550

1,170

1,150

1,390

1,470

1,360

1,260

1,120

1.040

57,470 

1,916

114,000

/July

296

249

225

233

241

241

235

229

218

*206

192

158

130

158

141

141

14,336 

462

28,440

Aug.

249

249

257

265

270

257

257

*249

245

237

245

270

550

557

346

350

7,368 

258

14,610

Sept.

565

570

370

360

360

560

550

565

590

405

390

*375

g438

3450

a460

11,853 

395

23,510

The season: Max Min Mear Ac-ft 556,100

* Discharge measurement made on this day. 

t Result of discharge measurement.

a No gage-height record; discharge estimated on basis of records for station near Squirrel 

and canal diversions between stations, 

g Computed from staff-gage reading.
HENRYS FORK BASIN 39

Diversions from Henrys Fork between Ashton and St. Anthony gaging stations, Idaho

Between Ashton and St. Anthony gaging stations, seven canals divert water from Henrys 

Pork for irrigation. Records available each irrigation season from 1919 to 1956. Discharge of canals computed from daily or twice-weekly staff-gage readings, or interpolated, and combined to show total diverted flow. Records good.

Discharge, In cubic feet per second, 1956

Day

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

ToTi 

Mean

May

683 |

685

735

738 

737

797

835

903

942

893

889

920

995

993

1,050

1 ..... j ....................................

June

1,220

1,280

1,320

1,350 

1,300

1,300

1,320

1,250

1,370

1,340

1,260

1,220

1,190

1,160

1,110

July

915

783

796

766 

TT5

845

1,050

1,060

1,170

1,310

1,390

1,260

1,300

1,300

1,250

Aug. n

1,300

1,250

1,150

1,140 

1,130

1,140

1,130

1,160

1,110

1,160

1,150

1,080

1,080

1,090

984

Sept.

746

740

724

740 

8O4

789

876

853

821

838

808

756

747

644

622

Day

16

17

18

19 

20

21

22

23

24

25

26

27

28

29

30

31

Runoff In acre-feet. ...........................

May

1,130

1,170

1,350

1,350 

1,410

1,420

1,440

1,400

1,440

1,430

1,380

1,320

1,240

1,170

1,140

1,180

66,970

June

1,020

1,010

1,010

989 

954

1,060

1,000

1,060

994

987

935

1,030

1,050

1,060

1,070

34,219

67,870

July

1,350

1,390

1,540

1.560 

1,390

1,390

1,340

1,340

1,280

1,220

1,310

1,350

1,390

1,340

1,340

1,350

75,070

Aug.

942

945

925

890 

913

953

916

945

930

928

927

923

950

915

878

874

63,090

Sept.

608

575

562

558 

553

602

623

617

596

626

617

620

610

615

607

20,499

40,660

The season: Max Ac-ft 515,700

Henrys Fork at St. Anthony, Idaho

Location.--Lat 43°58'00", long 111°40'20", in NW£ sec. 6, T. 7 N., R. 41 E., on right 

bank half a mile upstream from bridge on main street of St. Anthony and 6 miles downstream from Pall River.

Drainage area. 1,770 sq mi, approximately.

Records available.--March 1919 to September 1956 (irrigation seasons only).

gage. Water-stage recorder. Datum of gage is 4,950.7 ft above mean sea level, datum of 

1929. March 1919 to May 7, 1922, staff gages and May 8, 1922, to Aug. 14, 1931, waterstage recorder, at site 150 ft downstream at datum 0.08 ft lower.

Extremes. Maximum discharge during season 5.520 cfs May 8 (gage height, 5.60 ft); minimum, 88 cfs July 15 (gage height, 1.94 ft).

1919-56: Maximum discharge recorded, 9,030 cfs May 8, 1925 (gage height, 6.78 ft, 

present datum); minimum daily recorded, 413 cfs July 22, 1931.

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

good. Diversions above station for irrigation. Flow regulated by powerplant 

17 miles above station and by Henrys Lake (see p. 44); Island Park Reservoir 

(see p. 34), and Grassy Lake (see p. 44 ).

Revisions. WSP 1217: Drainage area.

Rating table, Apr. 30 to Sept. 30, 1956 (gage height, In feet, and discharge, 

in cubic feet per second)

3.2 

3.5 

4.0

740

1,040

1,760

5.0 

6.0

3,870

6,790

Discharge, in cubic feet per second, 1956

Day

1

2

3

4

5

10

11

12

13

14

15

Apr. May

3,010

3,140

3,490

4,170

,4,430

4,430

5,180

a5, 080

a4,980

4,840

4,460

3,820

3,320

3,320

June

4.430

4,4IU

4,100

3,870

3,560

3,030

2,580

2,730

2,750

2,770

2,880

2,940

2,770

2,670

July

1,350

1,440

1,930

1,740

1,600

1,420

1,380

1,170

941

1,290

1,400

1,040

1,120

890

900

Aug.

941

963

963

941

910

930

900

880

900

880

910

941

974

996

974

Sept.

1,110

1,050

1,060

1,030

1,010

1,120

1,260

1,320

1,340

1,350

1,300

1,290

1,240

1,160

1,170

Day

Ifi

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total ...............................................

Runoff in acre-feet .................................

Apr.

t3,080

May

3,530

,750

,940

'. ,100

' ,200

' ,330

,570

' ,490

*- ,430

' ,520

 ,600

,600

' ,570

'. ,600

,460

,250

129,650 

4,181

257,100

June

2,960

2,880

2,230

*1,950

2,040

2,420

2,500

1,910

1,830

2,020

2,110

1,860

1,730

1,550

1,440

2,705

160,900

July

941

952

1,220

1,400

1,500

1,490

1,260

1,220

1,280

*1,120

1,020

1,020

1,020

1,040

1,060

974

3B,12B 

1,230

75,630

Aug.

910

910

870

880

930

840

860

840

758

755

785

840

*1, 100

1,140

1,046

1,040

919

56,540

Sept.

1,160

1,160

1,120

1,140

1,090

1,090

1,040

900

1,090

1,110

*1,100

1,050

1,140

1,160

1,160

34,320 

1,144

68,070

The season: Max - Mln - Mean - Ac-ft 618,200

~ iyj.suiiai-ge meciaui emeiiu uiauc wn 1*11.10 ciaj .

t Result of discharge measurement.

a No gage-height record; discharge estimated on "basis of records for upstream stations.
40 HENRYS FORK BASIN

Teton River near Tetonia, Idaho

Location.--Lat 43°51', long 111 0 15', in sec. 15, T. 6 N. , R. 44 E. , on right bank if miles 

downstream from highway bridge, 4 miles downstream from Packsaddle Creek, and 6 miles 

northwest of Tetonia.

Drainage area. 471 sq mi.

Records available. October 1929 to December 1932, May to September 1934, July to September 1935, July to September 1936, July to September 1937, May to September 1940, and 

June 1941 to September 1956. Monthly discharge only for some periods, published in 

WSP 1317.

Gage. Water-stage recorder. Datum of gage is 5,910.3 ft above mean sea level, unadjusted. Since November 1941, supplemental staff gage at site if miles upstream.

Average discharge . 18 years (1929-32, 1941-56), 388 cfs (280,900 acre-ft per year).

Extremes.--Maximum discharge during year, 1,590 cfs June 3 (gage height, 2.65 ft); minimum, 149 cfs Nov. 13 (gage height, 0.48 ft).

1929-32, 1934-35, 1940-56: Maximum discharge observed, 1,900 cfs June 28, 1945 

(gage height, 2.97 ft); minimum observed, 62 cfs Jan. 16, 17, 1943.

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

which are fair. Many diversions from tributaries above station for irrigation.

Revisions.--WSP 1217: Drainage area.

Rating table, water year 1955-56, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Nov. 29 to Dec. 4)

0.4 

.5

1.0

144

168

230

364

1.5 

2.0 

2.7

668

1,030

1,640

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

270

270

266

262

266

*283

292

283

274

266

279

292

274

270

270

266

262

262

262

296

310

324

314

292

283

274

283

296

288

288

292

8,709

281

17,270

Nov.

258

288

305

279

310

292

270

*262

262

279

296

254

191

170

165

160

210

280

329

408

577

583

354

274

262

234

238

250

250

246

8,536

285

16,930

Dec.

246

235

225

2O4

220

235

*243

245

245

245

250

250

240

220

195

190

200

220

240

260

280

340

600

700

600

540

470

410

375

360

340

9,623

310

19,090

Jan.

320

3OO

280

260

250

240

238

230

230

250

*279

265

260

240

230

230

230

230

230

230

225

225

225

220

220

220

220

210

205

200

180

7,372

238

14,620

Feb.

160

165

175

180

185

185

185

185

185

190

200

205

210

*216

200

190

185

190

195

200

205

210

205

180

180

180

180

180

180

5,486

189

10,880

Mar.

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

190

195

200

212

*230

265

420

600

759

801

661

466

443

408

545

9,275

 299

18,400

Apr.

472

380

359

354

386

354

339

397

425

472

490

454

443

425

443

437

443

*431

425

431

448

472

502

564

552

539

545

589

577

502

13,650

455

27,070

May

466

443

437

454

466

490

490

490

502

521

558

564

552

466

484

472

*472

484

515

583

773

947

,090

,170

,290

,380

,400

,420

,440

,490

,400

23,709

765

47,030

June

1,410

1,510

1.570

1,480

1,340

1,240

1,020

822

808

851

*924

984

1,010

1,020

1,010

1,060

1,020

917

837

822

977

1,090

939

873

895

895

880

880

873

858

30,815

1,027

61,120

July

837

858

954

866

808

787

752

731

717

703

703

703

703

675

648

642

*622

609

602

583

583

596

577

564

564

552

545

539

539

552 

545

20,659

666

40,980

Aug.

545

539

535

515

515

515

502

490

490

484

484

478

466

460

460

454

460

448

443

443

437

425

*419

413

408

408

413

431

425

419

413

14,335

462

28,430

Sept.

413

402

392

386

380

380

380

380

380

380

402

413

402

397

380

375

364

359

364

359

349

349

349

349

544

*344

344

344

349

349

11,158

372

22,130

Calendar year 1955: Max 700 Mln 150 Mean 299 Ac-ft 216,600

Water year 1955-56: Max 1,570 Mln 160 Mean 446 Ac-ft 324,000

* Discharge measurement made on this day.

Note. No gage-height record Dec. 8 to Mar. 20 (stage-discharge relation affected by Ice 

Nov 14-18, Dec. 2, 3, Dec. 5 to Mar. 24); discharge estimated on basis of 4 discharge measurements, 

weekly readings on supplementary staff gage, weather records, and records for station nearAnthony.

St.
HENRYS FORK BASIN 41

Teton River near St. Anthony, Idaho

Location. Lat 43°55'40", long 111°36'55", in SW£ sec. 15, T. 7 N., R. 41 E. , on right 

bank half a mile upstream from railroad bridge and 4 miles southeast of St. Anthony.

Drainage area. 890 sq mi, approximately.

Records available .--January 1890 to September 1893, April 1903 to June 1909, April 1920 

to September 1956 (irrigation seasons only. 1920-21, 1923-33). Monthly discharge for 

some periods, published in WSP 1317. Published as "near Wilford" or "at Chases Ranch" 

1890-93.

Gage. Water-stage recorder.

T929. Apr. 5, 1890, to Sept. 30, 1893, staff ga

Datum of gage is 4,971.8 ft above mean sea level, datura of

at site 1 mile downstream at different datum. Apr. 23, 1903, to June 30, 1909, staff gage at site three-quarters of a 

mile upstream from present site at different datum. Apr. 19, 1920, to May 1, 1921, 

staff gage and May 2, 1921, to Nov. 5, 1933, water-stage recorder at site 400 ft downstream from present site at different datum.

Average discharge. --23 years (1933-56), 755 cfs (546,600 acre-ft per year).

Extremes. Maximum discharge during year, 3,790 cfs June 2 (gage height, 6.54 ft); minimum, 214 cfs Dec. 15 (gage height, 1.62 ft).

1890-93, 1903-9, 192) -56: Maximum discharge observed, 5,830 cfs June 13, 1893 

(gage height, 6.90 ft, site and datum then in use); minimum, that of Dec. 15, 1955.

Remarks. Records excellent except those for periods of ice effect and no gage-height record, which are fair. About 40,000 acres of land irrigated from diversions above station. Water is diverted at times (since 1939) during irrigation season from Henrys 

Pork through Cross Cut Canal to Teton River three-quarters of a mile above station 

(12,700 acre-ft diverted into river during 1956 irrigation season).

Revisions [water years) . WSP 1217: Drainage area. WSP 1347: 1903-6, 1908-9.

Rating table, water year 1955-56, except for periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used May 19 to June 16)

1.7 264 4.0 1,750

2.0 380 5.0 2,610

2.5 635 6.2 3,710

3.0 965

Discharge, In cubic feet per second, water year October 1955 to Sieptember 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Bean

Ac-ft

Oct.

472

463

458

458

448

*467

482

477

472

463

458

487

482

458

458

453

448

453

448

472

528

528

540

528

503

498

503

513

508

503

523

14,952

482

29,660

Nov.

487

416

518

498

528

528

492

*458

453

472

492

463

402

b340

b290

282

b440

b480

528

629

721

812

578

487

430

434

434

444

458

448

14,442

481

28,650

Dec.

b440

b430

b420

402

398

b410

*b415

b420

b420

b405

394

420

394

b380

b370

b360

b360

b380

b400

b420

453

482

1,360

2,580

1,160

786

b640

b560

b500

467

b480

17,506

565

34,720

Jan.

b460

b440

425

467

444

439

412

407

371

439

*434

416

425

398

b395

b395

b395

b390

b390

b390

b385

b385

b385

b380

b370

b375

b380

358

b340

b325

518

12,333

398

24,460

Feb.

264

a300

a320

a330

a335

a340

a340

a335

a330

a320

a320

a320

a320

*b325

b320

b310

b300

b300

b300

b310

b320

b325

b325

b320

b310

b300

b300

b300

b300

9,139

315

18,130

Mar.

b300

*b298

b310

b310

b310

b300

b280

b280

b285

289

b285

b280

b280

b290

b300

b310

b320

b335

358

371

*402

472

846

1,100

1.280

1,260

839

659

572

612

799

14,932

482

29,620

Apr.

799

629

567

534

629

545

492

589

653

708

832

766

760

721

812

860

853

*867

874

937

,010

,120

,170

,240

.540

,260

,240

,280

,250

,100

26,437

881

52,440

May

1,020

944

937

,020

,260

,590

,570

,520

,610

,690

,720

,580

,400

,260

,140

,180

* ,560

,970

,290

,640

,870

,180

5,450

*5, 510

3,540

5,690

5,620

5,540

5,570

5,490

5,420

67,581

2,174

155,600

June

5,490

5. 680

5,670

5,470

5,200

*2,880

2,540

1,990

2,030

2, 160

2,340

2,400

2,400

2,300

2,220

2,270

2,030

1,760

1,700

1,710

1,900

2,010

1,740

1,610

1,750

1,670

1,620

1,640

1,660

1,600

67,220

2,241

133,300

July

1,500

1,520

1.690

1,500

1,360

1,310

1,280

1,250

*1,230

1,200

1,260

1,290

1,240

1,190

1,140

1,090

1,080

1,140

1,150

1,100

1,100

1,110

1,090

1,070

1,070

1,060

1,050

1,020

1,020

1,050

1,010

57,150

1,198

75,650

Aug.

986

958

916

888

867

860

846

859

818

825

825

825

*812

792

775

747

740

728

721

702

721

775

775

766

760

747

747

780

780

780

754

24,849

802

49,290

Sept.

708 '559

665

659

671

665

653

641

635

641

665

*695

689

665

665

659

665

659

641

653

629

624

629

671

665

665

665

671

683

689

19,874

662

59,420

Calendar year 1955: Max 2,580 Mln 257 Mean 632 Ac-ft 457,400

Water year 1955-56: Max 3,690 Mln 264 Mean 891 Ac-ft 646,900

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range In stage, weather records, 

nd records for Pall River near Squirrel, 

b Stage-discharge relation affected by Ice.

467239 O-58 4
HENRYS FORK BASIN

Diversions from Teton River between St. Anthony gaging station and mouth, Idaho

BBciBuii ii-uiu laia oo laoD. uiscnarge 01 canais computed irom aany or twice-weeKiy staii 

gage readings, or interpolated, and combined to show total diverted flow. Records good,

Discharge, in cubic feet per second, 1956

Day

I

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

May

150

157

207

253

332

388

439

468

610

633

694

622

675

654

588

June

,230

,310

,350

,370

,410

,370

,370

,370

,330

,380

,450

,460

,390

,340

,330

July

1,040

1,160

1,100

978

957

971

1,010

,030

,070

,200

,240

1,200

,220

,160

,070

Aug.

838

810

767

790

764

732

737

785

766

769

794

753

747

736

707

Sept.

595

587

595

585

606

607

562

549

568

600

640

665

64T

640

627

Day

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total ......................................... ...

Mean ..............................................

Runoff in acre-feet ...............................

May

782

977

1,080

950

1,100

1,160

1,200

1,210

1,330

1,310

1,330

1,230

1,260

1,180

1,180

1,150

25,299

816

50,180

June

1,330

1,190

981

969

1,100

1,090

,100

,020

,080

,100

,080

,060

,060

,130

,150

-

36,900

1,230

73,190

July

1,020

1,030

1,050

1,130

1,030

1,010

1,020

1,040

1,030

1,010

975

988

985

970

978

889

32,561

1,050

64,580

Aug.

724

734

706

682

679

685

684

664

688

663

644

'638 616

632

647

628

22,209

716

44,050

Sept.

617

627

635

622

590

583

580

591

600

511

502

513

467

470

465

-

17,438

581

34,590

The season: Max Ac-ft 266,600

Diversions from Henrys Fork between St. Anthony and Rexburg gaging stations, Idaho

Between St. Anthony and Rexburg gaging stations four canals divert water from Henrys 

Fork for irrigation. Records available for part of each irrigation season from 1919 to 

1956. Discharge of canals computed from daily or twice-weekly staff-gage readings, or 

interpolated, and combined to show total diverted flow. Records good.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct. Nov. Dec. Jan. Feb. Mar. Apr. Hay

592

590 

626

659

834

852

849

848

833

854

863

842

855

846

922

991

,060

,100

,150

,180

,190

,270

,260

.280

,280

,220

,170

,120

,080

,050

,060

30,326

978

60,150

June

,070

,120

TTTo

,090

,070

,040

,O70

,080

,110

,100

,100

,050

,040

1,000

943

895

887

898

864

791

818

835

824

823

832

782

82?

861

881

847

28,657

955

56,840

July

797

792 

742

712

644

677

764

893

911

939

1.010

937

934

865

977

938

884

973

956

985

936

847

804

825

806

776

785

805

804

723

26,169

844

51,900

Aug.

677

678

657

691

764

771

806

777

787

720

754

709

682

676

729

602

637

632

638

653

625

618

616

596

665

654

671

759

624

590

586

21,044

679

41,740

Sept.

619

635

676

658

658

667

698

688

659

651

628

579

519

445

421

404

399

361

382

399

406

421

394

397

397

394

396

402

421

406

15,180

506

30,110

The season: Max Ac-ft 240,700
HENRYS PORK BASIN 43

Henrys Pork near Rexburg, Idaho

Location. Lat 43°49'34", long 111°54'15", in NEi sec. 30, T. 6 N.. R. 39 E., on right 

bank 200 ft downstream from highway bridge and 6 miles (revised) west of Rexburg.

Drainage area. 2,920 sq mi, approximately.

Records available. April 1909 to September 1956. Monthly discharge only for some periods, 

published in WSP 1317. Prior to 1911, published as North Pork of Snake River near 

Rexburg.

Gage. Water-stage recorder. Datum of gage is 4,807.7 ft above mean sea level, datum of 

"1929. Apr. 13, 1909, to Sept. 28, 1912, staff gage at datum 0.67 ft higher. Sept. 29, 

1912, to Apr. 4, 1913, staff gage at same datum.

Average discharge. 47 years, 1,910 cfs (1,383,000 acre-ft per year).

Extremes.--Maximum discharge during year, 5,930 cfs May 30 (gage height, 8.88 ft); minimum, 625 cfs Nov. 16 (gage height, 2.85 ft).

1909-56: Maximum daily discharge, 9,490 cfs June 29, 1927; maximum gage-height, 

9.97 ft May 19, 1927; minimum discharge, 183 cfs Mar. 24-28, 1934 (gage height, 1.45ft).

Remarks. Records good except those for periods of ice effect, which are fair. Plow 

regulated by operation of powerplant near Ashton and by Henrys Lake (see following 

page), Island Park Reservoir (see p. 34), and Grassy Lake (see following page). Diversions for irrigation of about 172,000 acres above station. Fart of return flow 

excapes westward beneath the Snake River plains above gaging station.

Revisions.--WSP 1217: Drainage area.

Rating table, water year 1955-56, ept periods of Ice effect (gage

(Shifting-control method used Mar. 13 to Apr. 26, 

May 11 to June 26, July 12-27)

3.0 

4.0 

5.0 

6.0

720

1,340

2,080

2,920

7.0 

8.0 

9.0

3,850

5,000

6,520

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

1,500

1,480

1,460

1,400

1,420

 1,470

1,490

1,500

1,520

1,490

1,480

1,550

1,560

1,490

1,490

1,210

998

998

974

1,020

1,160

1,580

1,800

1,860

1,900

1,910

1,980

1,990

1,980 

1,990

2,070

47,720

1,539

94,650

Nov.

2,080

2,030

1,8OO

1,690

1,540

1,470

 1,420

1,400

1,370

1,370

1,400

1,410

1,400

1,330

1,100

742

1,020

1,580

1,990

1,990

2,020

2,260

1,960

1,770

1,640

1,610

1,610

1,560

1,560 

1,560

47,682

1,589

94,580

Dec.

* 1,580

1,6OO

1,550

1,480

1,370

1,430

1,460

1,440

1,530

1,470

1,440

1,440

1,400

914

896

1,080

1,800

2,250

2,220

2,380

2,440

2,590

2,760

3,780

4,120

3,460

2,980

2,920

2,680

2,260

2 , 280

63,000

2,032

125,000

Jan.

2,480

2,350

2,210

*2,140

1,840

1,720

1,670

1,620

1,510

1,490

1,630

1,610

1,610

1,590

1,570

1,580

1,550

1,500

1,480

1,450

1,430

1,400

1,420

1,430

1,300

1,320

1,340

1,300

1,250 

1,150

96^

48,902

1,577

97 , 000

Feb.

932

1,000

1,150

1,250

1,350

1,450

* 1,500

1,400

1,380

1,380

1,420

1,550

1,750

1,750

1,750

1,700

1,670

1,700

1,720

1,730

1,740

1,750

1,750

1,730

1,720

1,710

1,700

1,700

1,700

45,032

1,553

89,320

Mar.

1,700

 1,700

1,700

1,700

1,680

1,660

1,630

1,700

1,700

1,660

1,600

1,650

1,680

1,680

1,750

1,780

1,890

1,870

1,860

1,840

1,860

1,940

2,340

2,770

2,970

2,970

2,790

2,400

2,140 

2,060

2,100

60,700

1,960

120,500

Apr.

2,220

*2,160

1,980

1,890

1,850

1,840

1,660

1,700

1,700

1,750

1,900

2,050

1,990

2,020

2,100

2,330

3, 550

2,590

2,750

2,980

3,280

3,530

3,860

3,970

4,220

4,090

3,830

4,010

3,970 

3,900

80,670

2,689

160,000

May

3,550

3,420

*3,330

3,440

3,780

4,280

4,640

4,780

5,010

5,040

5,150

5,220

4,880

4,190

3,500

3,250

5,240

3,480

3,810

4,130

4,370

4,640

4,910

*5,110

5,310

5,490

5,630

5,800

5,880 

5,910

5,800

140,970

4,547

279,600

June

5,570

5,490

5,620

5,670

5,530

5,210

*4,740

3,840

3,090

3,130

3,190

3,340

3,560

3,690

3,530

3,810

4,240

4,120

3,420

3,030

3,190

3,590

3,500

E,970

2,850

3,020

2,880

2,550

2,330 

2,110

112,800

3,760

223,700

July

2,020

2,000

*2,680

2,960

2,780

2,350

1,930

1,680

1,270

1,020

1,330

1,190

1,110

1,040

914

878

797

8T9

1,080

 1,270

1,370

1,440

1,330

1,350

1,310

1,140

1,070

1,110

1,110 

1,300

1,330

44,978

1,451

89,210

Aug.

1,330

1,350

1,260

1,140

1,040

1,030

968

926

914

968

968

1,060

1,140

1,120

1,170

1,180

1,160

1,130

1,100

1,090

1,110

1,060

1,030

956

902

896 '§50

 1,090

1,440 

1,400

1,290

34,168

1,102

67,770

Sept.

1,290

1,310

1,160

1,110

1,040

1,040

1,210

1,330

1,360

1,380

1,420

1,440

1,530

1,510

1,510

1,530

1,500

1,470

1,430

1,420

1,340

1,300

1,250

1,280

1,430

* 1,470

1,480

1,460

1,580 

1,580

41,160

1,372

81,640

Calendar year 1955: Max 4,120 Mln 610 Mean 1,727 Ac-ft 1,250,000

Water year 1955-56: Max 5,910 Mln 742 Mean 2,098 Ac-ft 1,523,000

* Discharge measurement made on this day.

Mote. Stage-discharge relation affected by Ice Jan. 16-30, Feb. 2 to Mar. IZ.
HENRYS FORK BASIN

Smaller Reservoirs in Henrys Fork Basin

Henrys Lake. Lat 44°36', long 111°21' , in NW£ sec. 26, T. 15 N., R. 43 E., at dam on 

Henrys Fork, 4 miles south of former Lake, Idaho, post office. Drainage area, 98 sq 

mi, approximately, including 6 sq mi of Dry Creek basin. Records available, June 1923 

to September 1956 (fragmentary). Staff gage. Datum of gage is 6,457.16 ft above mean 

sea level (levels by Bureau of Reclamation). Maximum contents observed during year,

"60,100 acre-ft July 5 (gage height, 15.11 ft); minimum observed, 50,300 acre-ft Oct. 10 

(gage height, 10.22 ft). Maximum contents observed during period 1923-56, 

84,500 acre-ft June 24, 1953 (gage height, 15.80 ft); minimum observed, 140 acre-ft 

Nov. 8, 1934 (gage height, 0.03 ft).

Reservoir is formed on natural lake by concrete dam; storage began Sept. 21. 1922; 

dam completed July 1923. Capacity, 79,351 acre-ft between gage heights 0.0 ft (low-

~water level of Henrys Lake prior to construction of dam) and 15.0 ft (top of 5-ft 

flashboards on spillway). Floodwaters of Dry Creek are diverted into Henrys Lake at 

times (small diversion during water year 1956). Water used for irrigation near St. 

Anthony. Gage read occasionally. Records given herein represent usable contents, 

except an allowance is usually made of 3,000 acre-ft for loss and dead storage from 

maximum contents. Capacity table furnished by North Fork Reservoir Co.

Grassy Lake. Lat 44°08', long 110°49', approximately in sec. 7, T. 48 N., R. 116 W. 

(unsurveyed), in gatehouse at dam on Grassy Creek half a mile upstream from mouth and 

24 miles northwest of Moran, Wyo. Drainage area 12 sq mi, approximately, including 

basin of Cascade Creek, from which water is diverted into Grassy Lake. Records available, October 1939 to September 1956. Mercury pressure gage. Datum of gage is mean 

sea level (levels by Bureau of Reclamation). Maximum contents observed during year, 

15,300 acre-ft, June 1, 13, 20; maximum elevation, 7,210.40 ft June 1; minimum contents 

observed, 11,300 acre-ft Oct. 3, 13; minimum elevation observed, 7,196.70 ft Oct. 13. 

Maximum contents observed during period 1939-56, 15,446 acre-ft July 2, 1943 (elevation, 7,210.85 ft); no contents Oct. 2-5, 1940.

Reservoir is formed by earth-fill, rock-faced dam; storage began Oct. 18, 1939. 

Capacity 15.182 acre-ft between elevations, 7,135.0 ft (sill of trash rack) and 

7,210.0 ft (crest of spillway). Water is used for irrigation of lands in FremontMadison irrigation district, Idaho. Gage read about twice monthly. Records given 

herein represent usable contents. Gage-height record and capacity table furnished by 

Bureau of Reclamation.

Month-end elevations or gage heights and usable contents, water year October 1955 to September 1956

Date

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

Calendar year 1955..

May 31. ..............

July 31..... ..........

Aug . 31 ...............

Water year 1955-56..

Gage

height 

(feet)

_

-

-

_

_

-

Henrys Lak

Contents 

(acre -feet)

a59,100

,

-

Change 

In contents 

(acre-feet)

_

+4,400

-12, 900

+18,500

Elevation 

(feet)

_

_

_

-

-

_

_

_

-

Grassy Lake

Contents 

(acre-feet)

312,000

-

-

Change 

In contents 

(acre -feet)

_

+200

+400

+200

-100

+1,900

a No gage-height recordj contents Interpolated.
SNAKE RIVER MAIN STEM 

Diversions from Snake River between Heise and Shelley gaging stations, Idaho

45

Between Heise and Shelley gaging stations, 47 canals divert water from Snake River for 

irrigation; of these 36 divert above mouth of Henrys Fork. Records available during each 

irrigation season from 1919 to 1956. One of the canals is equipped with a water-stage 

recorder, the others with staff gages, which are read once daily. Discharge combined to 

show total diverted flow. Records include Riley ditch which diverts 1 5 miles above Heise 

gaging station. Records good.

in cubic feet per second, 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

May

1,460 

1,580

1,840

2,590

3,150

3,420

3,680

4,350

4,940

5,250

5,210

5,240

5,040

5,190

5,660

June

8,090 

8,520

8,570

8,720

8,860

9,150

9,370

9,690

9,700

9,540

9,820

10,000

10,200

10,100

9,820

July

9,240 

9,440

9,250

8,880

8,970

9,540

9,410

9,360

9,630

9,910

10,000

10,000

9,400

9,050

8,830

Aug.

9,110 

8,480

8,340

8,180

7,970

8,010

,930

,710

,720

,730

,630

,620

,720

,770

7,780

Sept.

,230 

,340

,350

,460

,680

,500

,620

,470

,280

,330

,360

,240

7,010

6,920

6,730

Day

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total .............................................

Runoff In acre-feet ...............................

The season: Max - Mln - Mean

May

6,520 

6,730

7,260

7,480

7,420

7,970

8,080

7,880

8,050

8,220

8,120

7,770

7,530

6,900

6,920

7,370

5,768

354,700

June

8,850 

8,180

8,110

8,380

8,520

8,210

7,770

7,800

7,880

8,080

8,510

8,630

9,110

9,550

9,580

8,910

530,200

Ac-ft 2

July

9,680 

10,100

10,200

10,300

10,300

10,200

9,780

10,000

9,860

9,860

9,680

9*470

9,530

9,190

9,220

9,210

9,596

590,100

Aug.

,730 

,190

>,970

,800

,350

,580

,720

,910

i,030

,930

,810

,690

,520

,260

,410

,280

,738

475,800

Sept.

6,220 

6,050

6,030

6,060

6,280

6,370

6,200

5,980

5,760

5,560

5,210

5,090

4,910

4,400

4,020

6,455

384,100

,335,000

Snake Rive/1 near Shelley, Idaho

Location. Lat 43°24'50", long 112°08y05", in SWij sec. 17, T. IN., R. 37 E. , on right 

bank a quarter of a mile southeast' of Woodville and 2j miles north of Shelley.

Drainage area. 9,790 sq mi, approximately, excluding nontributary area on Snake River 

plains.

Records available. March 1915 to September 1956 (prior to October 1931 irrigation 

seasons only).

Gage.--Water-stage recorder. Datum of gage is 4,599.0 ft above mean sea level, datum of 

1929.

Average discharge.--25 years (1931-56), 5,272 cfs (3,817,000 acre-ft per year).

Extremes. Maximum discharge during year, 30,100 cfs May 29 (gage height, 12.90 ft); minimum daily, 1,400 cfs Feb. 3; minimum gage height, 4.65 ft Nov. 13.

1915-56: Maximum discharge, 47,200 cfs June 17, 1918 (gage height, 16.97 ft); minimum, 288 cfs Nov. 5, 1934 (gage height. 2.22 ft).

Maximum discharge known, 72,000 cfs (estimated) June 6, 1894, at former station at 

Eagle Rock (now Idaho Palls); 7 miles upstream from present site.

Remarks. Records excellent except those for periods of ice effect, which are fair. Some 

regulation by Jackson Lake (see p. 14), Palisades Reservoir (see p. 30), Island Park 

Reservoir (see p. 34), Henrys Lake and Grassy Lake (see preceding page). Many diversions above station for irrigation.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2,010

2,090

2,210

2,030

1,980

2,060

2,210

2,230

2,340

2,310

2,340

2,420

2,520

2,490

2,440

2,350

2,100

1,820

1,790 

1,810

1,920

2,030

2,470 

2,800

*2,820

2,850

2,850

2,830

2,910

2,950

5,130

73,110

2,358

145,000

Nov.

3,470

3,560

3,500

3,280

3,190

3,070

2,990

2,970

2,890

2,890

2,820

3,050

2,540

3,070

2,310

2,140

2,270

1,700

3,090

4,260

4,880

5,150

5,150 

4,550

4,600

3,820

3,750

3,770

3,680

3,630

------

102,040

3,401

202,400

Dec.

3,590

*3,610

3,660

3,560

3,340

3,110

3,260

2,950

3,390

3,410

3,680

3,500

3,250

3,000

2,100

1,950

2,060

3,000

3,630

4,010

4,310

4,660

5,220 

6,470

10,000

9,260

8,070

7,390

6,930

5,860

5,150

137,320

4,430

272,400

Jan.

5,570

5,540

5,700

5,060

*4,850

4,710

4,550

4,290

4,060

3,960

3,910

4,O80

4,140

4,140

4,160

4,180

4,340

4,260

4,140 

4,080

4,010

3,960

3,940 

3,880

3,790

3,170

2,850

3,150

3,500

3,200

2,600

127,770

4,122

253,400

Feb.

2,000

1,600

1,400

1,500

1,700

2,000

2,400

2,700

2,900

2,900

2,700

2,700

2,900

3,000

3,100

3,100

3,000

2,900

2,600

2,800

3,200

3,400

*3,660 

3,600

3,600

3,600

3,560

3,540

3,600

- -----

------

81,660

2,816

162,000

Mar.

3,600

3,700

3,680

3,790

3,600

3,400

3,400

3,450

3,600

3,650

3,750

3,600

3,200

3,150

3,400

4,000

4,700

5,100

5,220 

5,220

5,280

*5,280

5,670 

6,110

7,290

8,870

9.320

9,080

8,450

8,110

8,350

159,020

5,130

315,400

Apr.

8,870

9,220

9,010

8,620

8,310

8,380

8,420

8,140

8,380

8,480

8,900

9,790

10,300

10,800

11,300

12,500

14,200

14,7OO

*15,300 

16,300

16,800

16,500

17,300

17,900

18,800

19,500

18,400

18,400

17,900

16,600

388,020

12,930

769,600

May

15,200

14,500

14,600

14,800

15,300

17,400

18,200

17,800

17,600

17,900

18,500

19,700

2o,400

19,800

17,500

15,500

14,900

 15,500

17,100 

19,200

20,800

21,800

22,800 

24,200

25,100

26,200

27,900

29,100

29,700

29,700

29,600

628,300

20,270

1,246,000

June

29,000

28,200

28,200

28,900

29,600

29,400

29,200

28,400

26,900

25,400

24,900

 24,300

24,000

23,800

24,100

24,900

25,800

25,600

23,600 

21,100

19,300

19,200

18,800 

17,300

14,800

13,100

12,700

12, 70O

13,000

13,500

------

679,700

22,660

1,348,000

July

15,700

13,700

13,400

13,100

12,800

10,500

9,010

8,140

7,260

6,310

6,210

6,310

6,470

6,670

6,630

5,760

4,790

4,740

 4,470 

4,520

5,030

5,950

6,150 

5,630

5,440

5,350

5,150

4,820

5,220

5,510

5,570

224,310

7,236

444,900

Aug.

5,470

5,860

5,830

5,570

5,250

4,760

4,420

4,240

4,180

4,340

4,470

4,550

4,680

4,440

4,440

4,470

4,880

4,820

4,760 

4,210

3,820

3,720

3,560 

 3,660

3,940

4,140

4,420

4,850

5,060

4,880

4,440

142,130

4,585

281,900

Sept.

3,960

3,960

4,080

3,790

3,590

3,470

3,680

4,140

4,360

4,260

4,240

4,560

4,360

4,420

4,240

3,990

3,610

3,240

2,850 

2,440

2,580

3,150

3,540 

3,630

3,660

3,700

3,390

 3,430

3,500

3,340

------

110,960

3,699

220,100

Calendar year 1955: Max 13,500 Mln 1,700 Mean 4,447 Ac-ft 3,219,000

Water year 1955-56: Max 29,700 Mln 1,400 Mean 7,799 Ac-ft 5,661,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 13-18, Jan. 24, Ja 

to Mar. 1, Mar. 5-7, 9-19.

27 to Feb. 22, Feb. 24
46 BLACKFOOT RIVER BASIN

Blackfoot River near Blackfoot, Idaho

Location. Lat 43"07"50", long 112°28'35", at east quarter corner of sec. 28, T. 3 S., 

R. 34 E. , on left bank 125 ft downstream from highway bridge, 2 miles upstream from 

mouth, and 8 miles southwest of Blackfoot.

Drainage area. 1,295 sq ml, Including that of Sand Creek whose flow is diverted to 

Blackl'oot River through the Idaho canal.

Records available. July 1913 to September 1956 (prior to October 1931 summer months 

only).Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 4,420 ft (from river-profile survey). 

T>rlor to May 8, 1926, staff gages, and May 8, 1926, to June 25, 1937, water-stage recorder, at site half a mile upstream at different datum.

Average discharge. 25 years (1931-56), 153 cfs (110,800 acre-ft per year).

Extremes. Maximum discharge during year, 612 cfs Apr. 30; maximum gage height, 6.33 ft 

Nov. 2; minimum daily discharge, 1 cfs July 28.

1913-56: Maximum discharge,.868 cfs May 21, 1921; no flow for many days.

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

which are poor. Flow regulated by Blackfoot-Marsh Reservoir (capacity at spillway 

crest, 312,000 acre-ft, and maximum capacity with flashboards, 413,000 acre-ft). 

Many diversions above station for Irrigation. Most of flow during nonlrrlgation 

season and part of that during irrigation season is supplied by waste from Snake River 

canals.

Cooperation.--Gage-height record furnished by Office of Indian Affairs. 

Revisions.--WSP 1217: Drainage area.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

.5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

90

38

37

46

*42

58

81

85

80

70

53

66

79

106

102

100

75

71

84

85

76

65

70

74

64

102

124

181

250

350

418

3,222

104

6,390

Nov.

424

455

418

*424

416

415

407

404

369

348

353

344

324

295

293

293

285

276

331

362

338

306

302

275

248

262

262

259

251

252

9,991

333

19,820

Dec.

258

*261

251

244

245

251

241

177

181

191

226

207

227

192

152

142

T58

220

185

202

186

186

202

297

351

358

349

338

285

231

228

7,222

233

14,320

Jan.

199

207

203

2QO

*223

245

213

206

178

174

177

160

160

142

138

254

259

185

192

174

172

164

171

159

125

118

b!25

b!30

b!20

bllO

90

5,373

173

10,660

Feb.

75

lo- 70

go

95

*b98

blOO

blOO

loo

100

loo

loo

100

100

90

90

90

95

100

100

105

105

110

115

115

115

115

115

120

2,888

99.6

5,730

Mar.

*bl!8

b!20

b!25

b!25

b!20

bl!5

112

108

m

124

120

115

115

120

120

130

170

212

217

*262

299

353

367

306

262

330

346

293

272

216

210

6,026

194

11,950

Apr.

240

233

205

*186

171

188

178

181

188

202

220

263

293

311

359

404

462

505

498

517

533

536

541

561

578

590

596

601

607

606

11,553

385

22,910

Calendar year 1955: Max 455 Mln 1 Mean 11O

May

*554

408

248

249

127

44

51

26

22

21

44

103

94

75

42

19

12

6

7

31

27

12

8

21

16

64

155

205

200

217

178

3,286

106

6,520

June

189

143

91

89

50

12

12

10

5

8

30

6

*10

51

124

199

217

203

121

107

89

95

91

76

80

20

38

*49

11

8

2,234

74.5

4,430

July10

36

65

80

So

27

26

2

5

22

15

14

*14

25

29

26

4

3

11

13

11

27

51

15

22

18

8

1

3

25

11

685

22.1

1,360

Aug.

*29

50

60

84

118

-71 124

*67

35

32

37

45

59

51

34

23

30

*29

36

24

6

4

215-

19

32

31

39

46

18

11

1,261

40.7

2,500

Sept.

12

39

*37

14

12

9

1?

35

78

81

126

130

116

117

125

117

109

*29

13

38

25

36

52

137

141

152

14T

113

111

111

2,274

75.8

4,510

Ac-ft 79,990

Water year 1955-56: Max 6O7 Mln 1 Mean 153 Ac-ft 111,100

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 8-1O, Feb. 1-5, 9-29, Mar. 1O-17; discharge estimated on basis 

of records for Snake River near Blackfoot.
SNAKE RIVER MAIN STEM 4' 

Diversions from Snake River between Shelley and Blackfoot gaging stations, Idaho

Between Shelley and Blackfoot gaging stations 13 canals divert water from Snake River 

for irrigation of 158,000 acres of land. Records available during each irrigation season 

from 1919 to 1956. The two largest canals are equipped with recordeps^ the others with 

staff gages, which are read once daily. Discharge combined to show totamiverted flow. 

Records good.

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

May

1,160

1,430 

1,590

1,770

2,110

2,300

2,440

2,820

2,890

3,240

3,330

3,420

3,300

3,200

3,410

June

3,240

5.150 

3,340

3,530

3,700

3,860

4,050

4,100

4,060

4,060

4,160

4,140

4,210

4,140

3,440

iuly

',070

,090 

,040

'. ,080

,040

'. ,210

'. ,170

,100

,050

,920

'. ,050

,260

,210

,210

,170

Aug.

3,830

5,840 

3,660

 3,510

3,460

3,140

3,100

3,230

3,230

3,230

3,250

3,220

3,350

3,310

3,380

Sept.

3,040

3,070 

3,100

3,060

3,050

2,980

3,000

3,110

3,150

3,090

2,970

2,830

2,680

2,570

2,430

Day

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Runoff In acre-feet ...............................

May i.eso

3,760 

3,820

3,910

3,980

4,020

4,030

3,840

4,010

3,780

3,570

3,480

3,080

2,680

2,790

2,860

189,700

June

3,630

3,330 

3,260

3,160

3,320

3,200

3,280

3,360

3,380

3,430

3,530

3,710

3,870

4,010

4,060

-

3,657

217,600

Juljr ~

4,140

4,050 

4,100

3,930

4,000

4,120

4,190

4,140

4,120

4,110

4,080

4,080

4,020

3,980

3,870

3,830

126,430

4,078

250,800

-Aug.

3,390

3,390 

3,360

3,350

3,360

3,280

3,170

3,190

fTZSQ3,300

3,280

3,280

3,180

3,260

3,240

3,170

3,329

204,700

Sept.

2,390

2,370 

2,460

2,380

2,290

2,350

2,540

2,600

2,500

2,570

2,500

2,420

2,420

2,250

2,100

-

80,270

2,676

159,200

The season: 1,022.000

Snake River near Blackfoot, Idaho

Location.--Lat 43°07' , long 112°31', in SE^ sec. 30, T. 3 S., R. 34 E., on right bank 

1,000 ft downstream from highway bridge, a quarter of a mile downstream from Blackfoot 

River, and 10 miles southwest of Blackfoot.

Drainage area.--11.310 sq mi .approximately, excluding nontributary area on Snake River plains.

Records available.--June 1910 to September 1956. Monthly discharge only for some periods, 

published in WSP 1317. Published as "at Clough ranch, near Blackfoot" 1924-45.

Gage. Water-stage recorder. Datum of gage is 4,400.83 ft above mean sea level, datum of 

1929 (preliminary adjustment). Prior to July 6, 1913, staff gages at practically same 

site and datum.

Average discharge. 30 years (1926-56), 4,048 cfs (2,931,000 acre-ft per year).

Extremes.--Maximum discharge during year, 27,300 cfs May 30 (gage height 11.03 ft); minimum, 458 cfs Aug. 24 (gage height, 0.69 ft).

1910-56: Maximum discharge, 46,200 cfs June 18, 1918 (gage height, 14.80 ft); minimum, 111 cfs Nov. 10, 1934 (gage height, 0.80 ft).

Late in summer of 1905 there was no flow in Snake River for a distance of 10 miles in 

vicinity of Blackfoot. On Aug. 9, 1905, discharge of Snake River just below mouth of 

Blackfoot River was 39 cfs,supplied by ground-water inflow a short distance upstream.

Remarks. Records excellent. Some regulation by Jackson Lake (see p. 14) Henrys Lake 

(see p. 44), Island Park Reservoir (see p. 34), Grassy Lake (see p. 44), and Blackfoot 

Marsh Reservoir, having a combined capacity of 1,483,000 acre-ft. About 694,000 acres 

of land irrigated by diversions above station.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

1,110

1,120 

1,130

1,100

*844_

964

1,110

1,410

1,490

1,530

1,490

1,560

1,630

1,670 

1,680

1,950

1,830

1,640

1,390

1,400

1,440

1,500

1,760

2,110

2 , 300

2 , 380

2 , 440

2,490

2,670

2,760

2 , 880

52,778

1,703

104,700

Nov.

3,210

3,550 

3,570

*5,480

3,290

3,210

3,150

3,080

3,030

2,940

3,030

2,970

2,760

3,150 

2,140

2,130

2,290

1,750

2 , 370

3,750

4,690

4,690

4,760

4,780

4,350

4,180

3,930

3,880

3,880

3,800

101,790

3,393

201, aoo

Dee.

3,770

*3,790 

3,820

3,750

3,540

3,350

3,020

3,160

3,270

3,370

3,480

3,710

3,570

3,300 

2,280

1,920

2,110

2,570

3,540

3,980

4,370

4,690

5,030

5,560

8,350

9,630

8,460

7 , 590

6,960

6,090

5,510

137,540

4,437

272,800

Jan.

4,900

5,540 

5,280

5,240

*5,010

4,900

4,710

4,540

4,220

4 , 000

4,000

4,060

4,200

4,150 

4,250

4,350

4,460

4,380

4,27O

4,150

4,06O

4,000

4,020

3,970

3,880

3,50O

2,860

3,210

3,550

3,270

2,640

129,570

4,180

257,000

Feb.

1,950

1,540

1,250

1 320

1,560

*1,950

2,380

2,600

2,960

2,820

2,610

2,670

2,730

2,920 

3,030

2,970

2,910

2,760

2,460

2,600

2,98O

3,120

3,240

3,200

3,260

5,570

3,160

3,320

3 , 300

76,920

2,652

152,600

Mar.

*3,320

3,540 

3,610

3,700

3,700

3,520

3,480

3,210

3,270

3,500

3,540

3,400

3,020

2,940 

3,210

3,970

4,520

4,970

5,300

5,260

5,300

5,340

5,430

5,840

6,290

8,060

9,030

9,080

8,620

8,060

7,980

154,010

4,968

305,500

Apr.

8,510

8,860 

8,920

*8,590

8,170

8,140

8,270

7,38O

7,960

8,140

8,500

8,94O

9,690

10,200 

10,800

11,700

15,500

14,400

15,000

15,900

16,800

16,900

16,900

17,700

18,000

18,900

18,300

17,800

17,700

16,900

377,670

12,590

749,1OO

May

*15,100

13,900 

13,200

13,200

13,100

14,200

15,700

15,000

14,600

14,300

15,000

16,000

17,100

17,300 

15,200

12,700

11,200

11,200

12 , 500

14,400

16,200

17,400

18,3OO

19,300

20,300

21,600

23,300

25,100

26,3OO

27,000

^6,800

526,5OO

16, '980

1,044,000

June

26,200

24,2OO

24,500

24,800

24,900

24,500

23,800

22,700

21,300

20,600

19,900

*19,600

19,300 

19,700

20,700

22,000

*22,700

21,600

19,100

17,000

16,100

15,800

14,800

12,900

10,400

9,3OO

*8,700

8,700

9,000

569,700

18,990

1,130,000

July

9,420

9.690 

9,630

9,360

9,280

7,620

5,430

4,580

3,820

2,840

2,240

2,240

*2,050

2,370 

2,470

2,460

1,350

876

796

659

688

1,340

2,040

1,740

1,490

1,270

1,290

1,080

1,130

1,640

1,860

104,729

3,378

207,700

Aug.

*1,820

2,040 

2,460

2,550

2,400

2,340

1,830

*1,540

1,320

1,420

1,540

1,670

1,770

1,580 

1,440

1,270

1,330

*1,680

1,640

1,510

852

710

564

*469

552

788

1,100

1,450

1,780

1,800

1,550

46,745

1,508

92,720

Sept.

1,150

1,040 

*1,130

1,040

836

652

632

900

1,440

1,600

1,670

1,900

2,140

2,230 

2,140

2,160

1,940

*1,380

1,000

702

486

600

1,150

1,730

1,640

1,720

1,760

1,580

1,800

1,890

42,038

1,401

83,380

Calendar year 1955: Max 10,400 Mln 348 Mean 3,160 Ac-ft 2,288,000

Water year 1955-56: Max 27,000 Mln 469 Mean 6,339 Ac-ft 4,601,000

Discharge measurement made on this day.
48 PORTNEUF RIVER BASIN

Portneuf River at Topaz, Idaho

Location. Lat 42°37', long 112-05 1 , in sec. 23, T. 9 S., R. 37 E., on right bank 200 ft 

upstream from Bob Smith Creek, 800 ft downstream from Topaz, 1? miles upstream from 

diversion dam of Portneuf-Marsh Valley Canal Co., and 4 miles west of Lava Hot Springs.

Drainage area.--420 sq mi, approximately (includes that of Bob Smith Creek).

Records available.--January 1913 to September 1915, July 1919 to September 1956. Monthly 

discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 4,918.00 ft above mean sea level, preliminary, unadjusted. Prior to July 20, 1919, staff gage at site three-eighthsof a mile 

downstream at datum 3.0 ft lower. July 20, 1919, to June 22, 1954, staff gage at site 

a third of a mile downstream at datum 2.00 ft lower than present datum.

Average discharge.--39 years (1913-15, 1919-56), 196 cfs (141,900 acre-ft per year).

Extremes. Maximum discharge during year, 438 cfs Mar. 31 (gage height, 3.72 ft); minimum, 

89 cfs Sept. 19.

1913-15, 1919-56: Maximum discharge observed, 902 cfs Apr. 3, 1913 (gage height, 

6.1 ft, site and datum then in use); minimum observed, 65 cfs Oct. 9, 1934 (gage 

height, 0.81 ft, site and datum then in use).

Remarks. Records excellent. Flow regulated by Portneuf-Marsh Valley Reservoir (capacity, 

16,410 acre-ft) and Chesterfield Reservoir on Twentyfourmile Creek (capacity, 

685 acre-ft). Diversions above station for irrigation of about 22,000 acres.

Revisions (water years). WSP 1347: 1920-22, 1924-25(M) .

Rating table, water year 1955-56 (gage height, In feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Apr. 6 to May 18)

2.1 

2.3 

Z.6

3.0 

4.0

89 

1Z7 

186 

Z68 

482

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

ZO

Zl

ZZ

Z3

Z4

25

26

Z7

Z8

Z9

30 

31

Total

Mean

Ac- ft

Oct.

loo

100

100

106

114

114

*108

104

10O

100

10Z

102

104

102

104

104

104

106

106

110

110

114

112

108

108

110

110

110

HZ

HZ 

HZ

3,308

10V

6,560

Nov.

110

108

TTO

114

116

116

118

*118

119

1Z1

123

1Z3

119

129

125

116

133

131

133

136

138

135

135

133

1Z9

131

136

136

136

138

3,765

1Z6

7,470

Dec.

140

138

135

131

1Z9

133

129

129

133

1Z9

1Z7

1Z9

1Z9

1Z5

"1Z5

1Z9

1Z9

127

125

125

131

164

2OO

zzz

T90

18Z

188

178

158

156 

154

4,517

146

8,960

Jan.

146

150

142

144

144

142

138

142

138

138

138

138

144

*144

154

190

IST

156

160

156

154

154

158

150

148

148

154

140

14Z

144 

138

4,598

148

9.1ZO

Feb.

130

125

130

133

136

136

136

135

133

133

136

138

135

133

135

131

135

135

135

136

136

136

136

136

136

*136

135

133

131

------

3,891

134

7,7ZO

Mar.

131

T35

138

138

140

135

136

135

140

140

135

135

14Z

140

136

140

144

146

15Z

164

170

176

19Z

Z45

3Z9

373

304

333

34Z

369 

414

6,049

195

1Z,000

Apr.

375

3Z3

281

Z58

251

Z43

Z36

241

»230

Z30

Z39

Z3Z

Z41

243

241

Z51

255

264

27Z

281

Z91

302

304

302

293

Z95

*304

297

283

270

8,128

271

16,120

May

Z58

Z55

Z51

Z53

258

258

Z55

Z53

Z47

245

Z55

251

234

Z24

206

19Z

188

T94

Z06

Z20

Z24

*22Z

220

228

251

245

247

247

268

253 

241

7,349

237

14,580

June

232

222

214

212

206

200

194

190

184

188

204

204

204

210

220

228

*230

228

226

224

230

212

200

198

198

196

194

208

224

222

6,302

210

12 , 500

July

214

212

206

204

220

224

210

196

196

204

196

188

184

174

182

184

190

190

*188

192

198

200

200

198

200

202

198

198

198

198

202

6,146

198

12,190

Calendar year 1955: Max Z6Z Min 91 Mean 137 Ac-ft 99,280

Aug.

196

172

154

184

180

178

174

170

172

174

174

176

178

178

174

172

174

174

172

172

170

170

168

166

162

*158

148

125

142

142

140

5,189

167

10,290

Sept.

146

142

138

136

136

135

140

140

136

136

135

116

104

100

100

102

98

97

91

98

97

97

98

98

98

97

98

98

98

100

3,405

114

6,750

Water year 1955-56: Max 414 Mln 91 Mean 171 Ac-ft 124,300

Discharge measurement made on this day.
PORTNEUF RIVER BASIN 49

Marsh Creek near McCammon, Idaho

Location. Lat 42°37'50", long 112°13'30", in NE£ sec. 22, T. 9 S., R. 36 E., near center 

of downstream side of abandoned highway bridge, 80 ft upstream from highway crossing 

and 2 miles southwest of McCammon.

Drainage area. 355 sq mi.

Records available . September 1954 to September 1956.

Gage. Wire-weight gage read once or twice daily.

Extremes. Maximum discharge observed during year, 280 cfs Mar. 21 (gage height, 6.00 ft); 

minimum observed, 30 cfs June 15, July 17, 18, 20, 21, 24-27; minimum gage height 

observed, 2.27 ft June 15.

Remarks. Records good except those for Oct. 1 to Nov. 7, July 1 to Sept. 30, and periods 

of doubtful gage-height record, ice effect, or backwater from debris, which are fair. 

Diversions above station for irrigation. Part of Birch Creek flow (tributary to Marsh 

Creek) diverted into Devil Creek in Bear River basin.

Rating table, water year 1955-56, except period of ice effect (gage 

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

(Shifting-control method used Oct. 1 to Nov. 8, Feb. 27 

to Apr. 11, July 7 to Sept. 3o)

2.2 

2.5 

3.0 

3.5

26

70

105

4.0 

4.5 

5.3

144

188

260

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

57

57

57

57

d65

d68

*69

d65

62

62

62

62

62

61

61

60

60

66

69

69

66

68

67

67

66

64

63

63

61

58 

59

1,953

63.0

3,870

Nov.

56

57

58

59

63

63

63

*66

63

62

61

61

60

49

44

56

56

59

62

69

75

68

66

62

6O

61

68

68

69

67

1,851

61.7

3,670

Dec.

68

69

69

63

68

68

65

63

63

62

51

51

46

45

*51

49

44

4?

51

65

63

91

112

116

114

116

~§3 118

79

79 

85

2,226

71.8

4.42O

Jan.

d78

d74

d72

d70

d68

66

66

65

63

63

62

66

79

*83

88

233

215

188

d!50

d!20

dlOO

91

90

88

80

78

77

77

71

70 

45

2,836

91.5

5,630

Feb.

44

41

4O

41

52

57

57

b56

b54

49

49

64

63

61

61

'58

54

54

54

66

66

68

65

63

66

*71

G§

68

68

------

1,679

57.9

3,330

Mar.

66

T7

98

170

dlSO

dllO

dlOO

dlOO

d!20

152

dllO

93

d85

78

77

83

84

C160

c!80

0200

0250

2 OS

158

143

119

117

103

99

96

96 

94

3,773

122

7,480

Apr.

94

97

97

94

90

90

88

88

*80

82

74

69

68

68

69

69

7O

71

68

68

68

66

67

67

66

67

*7O

74

70

68

2,277

75.9

4,520

May

66

64

62

59

57

57

57

52

51

45

4O

70

66

58

53

50

48

46

44

41

41

*47

41

41

42

43

44

49

63

62 

60

1,619

52.2

3,210

June

54

52

51

46

40

33

36

35

34

34

34

34

32

32

3.0

33

*43

43

42

41

4O

40

40

38

37

35

34

34

32

40

1,154

38.5

2,290

July

35

35

34

34

34

35

33

33

32

32

32

36

34

34

31

31

30

30

*34

3O

30

31

31

30

30

30

3O

32

34

34 

34

1,005

32.4

1,990

Aug.

35

35

35

36

37

36

37

42

42

36

36

38

41

42

42

41

42

45

46

4O

4O

38

38

46

46

*48

39

38

38

38 

40

1,233

39.8

2,450

Sept.

41

40

40

41

40

41

42

43

47

48

48

56

56

56

55

57

58

61

62

63

63'

65

62

63

63

66

68

66

68

70

1,649

55. 0

3,27O

Calendar year 1955: Max 140 Min 29 Mean 6O.O Ac-ft 43,420

Water year 1955-56: Max 250 Min 30 Mean 63.5 Ac-ft 46,130

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice. 

c Backwater from debris.

d Doubtful gage-height record; discharge estimated on basis of weather records and records for 

nearby streams.
50 PORTNEUF RIVER BASIN

Portneuf River at Pocatello, Idaho

Location.--Lat 42°51'40", long 112°27'25", in NE^NE^ sec. 34, T. 6 S. , R. 34 E. , on right 

bank 30 ft upstream from Fremont Street Bridge at Pocatello and 2.5 miles upstream 

from Pocatello Creek.

Drainage area. 1,000 sq mi, approximately.

Records available. May to September 1897, March 1898 to October 1899, August 1911 to 

September 1956.

Gage.--Water-stage recorder. Altitude of gage is 4,430 ft (from topographic map). 

May 18, 1897, to Oct. 14, 1899, staff gage at site 0.6 mile upstream at different 

datum. Aug. 31, 1911, to May 13, 1927, and Oct. 13, 1927, to June 13, 1928, staff 

gages near Carson Street Bridge 0.8 mile downstream at different datum. May 14 to 

Oct. 12, 1927, water-stage recorder at site 1.1 miles downstream at different datum. 

June 14, 1928, to Sept. 28, 1950, water-stage recorder near Carson Street Bridge 

0.8 mile downstream at same datum as former staff gages at this site.

Average discharge.--43 years (1912-16, 1917-56), 255 cfs (184,600 acre-ft per year).

Extremes. Maximum discharge during year, 660 cfs Apr. 2 (gage height, 6.11 ft); minimum, 

8 cfs July 8 (gage height, 3.36 ft).

1897-99, 1911-56: Maximum discharge, more than 2,000 cfs sometime during period 

May 13 to June 14, 1917; minimum, 5 cfs July 31, 1942, from rating curve extended 

below 40 cfs.

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

regulated by Portneuf-Marsh Valley Reservoir (capacity, 16,410 acre-ft) and Chesterfield Reservoir (capacity, 685 acre-ft). Diversions above station for irrigation of 

about 33,000 acres.

Rating table, water year 1955-56, except periods of loe effect (gage 

height, in feet, and discharge. In cubic feet per second)

3.6

3.7 

3.9 

4.2 78

4.6 

5.0 

5.5 

6.1

155

256

426

656

Discharge, in cubic feet per second, water year October 1955 to September 1956

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

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

80

74

78

77

*81

81

83

 81

83

83

86

88

88

86

84

84

84

88

91

89

94

98

98

98

116

108

105

120

173

197

220

3,096

99.9

6,140

Nov.

212

218

223

231

236

234

228

225

*223

228

231

228

225

228

b200

b!50

b200

265

271

265

271

256

245

239

236

228

225

234

242

248

6,945

232

13,780

Dec.

248

250

250

234

220

223

234

220

223

225

220

220

220

210

*170

234

236

228

220

223

231

256

365

419

415

383

390

394

354

309

296

8,320

268

16,500

Jan.

289

280

268

268

274

268

271

271

265

262

262

265

280

309

*316

426

 RS 452

365

344

333

330

358

368

347

326

326

319

b280

b220

b!90

9,562

308

18,970

Feb.

b!60 bl8"0~

b!90

b210

b230

b230

b270

b260

b270

293

293

299

zSS

277

277

265

195

293

286

289

289

293

289

277

274

*274

271

274

268

7,562

261

15,000

Mar.

265

274

280

306

344

333

296

280

277

289

319

286

271

274

262

259

£55

299

340

376

412

441

478

500

538

620

620

580

553

565

576

11,781

380

23,370

Apr.

612

640

600

549

508

485

467

463

»467

470

493

485

474

478

478

485

508

515

527

549

568

576

592

600

592

572

»568

576

557

523

15,977

533

31,690

May

493

463

452

459

441

456

470

470

452

372

372

386

368

319

268

202

178

169

131

140

146

*153

148

142

151

162

173

185

228

234

215

8,998

290

17,850

June

178

155

137

129

114

101

94

75

70

63

59

47

20

32

39

51

 58

55

64

67

64

64

68

65

64

63

56

44

41

40

2,177

72.6

4,320

July

48

46

44

42

40

24

34

18

2l

22

23

20

20

26

24

23

18

»18

20

20

20

22

24

22

24

24

24

31

38

42

41

866

27.9

1,720

Aug.

44

38

42

42

41

41

44

46

47

49

49

43

43

44

50

51

54

52

54

60

60

56

50

56

59

51

 52

60

58

49

51

1,536

49.5

3,050

Sept.

52

4748-

52

54

51

55

55

56

56

56

60

61

56

78

80

75

59

68

72

75

78

72

70

71

64

63

65

64

64

1.877

62.6

3,720

Calendar year 1955: Max 419 Mln 15 Mean 171 Ac-ft 123,900

Water year 1955-56: Max 640 Mln 18 Mean 215 Ac-ft 156,100

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice
BANNOCK CREEK BASIN 51

Bannock Creek near Pocatello, Idaho

Location. Lat 42 e 41'40", long 112"35"40", in NE£SE£ sec. 28, T. 8 S., R. 33 E., in Port 

Hall Indian Reservation, on right bank 0.3 mile upstream from Rattlesnake Creek, 

9f miles north of Pauline, and 14 miles southwest of Pocatello.

Drainage area. 230 sq mi.

Records available.--May 1955 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,710 ft (from topographic map).

Extremes.--Maximum discharge during year, 574 cfs Mar. 20 (gage height, 6.65 ft); minimum, 

5.2 cfs July 15 (gage height, 1.99 ft).

1955-56: Maximum discharge, that of Mar. 20, 1956; minimum, that of July 15, 1956.

Remarks. Records good. Diversions for irrigation above station. .Discharge measurements 

of Rattlesnake Creek made about once a month to supplement this record (see p. 253).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Bar. 20 Mar. 21 to Sept. 30

2.1 12

2.3 20

2.6 38

3.0 

3.5 

4.0

64

102

149

1.9 

2.1 

2.3 

2.6

4.0

7.8

14

31

3.0 58

3.5 99

4.0 147

5.0 267

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

13

13

13

12

13

13

13

*12

12

13

14

13

14

14

14

14

14

14

14

16

15 

14

14

14

15

15

15

15

16

16

16

433

14.0

859

Nov.

16

16

16

16

16

16

16

15

*16

15

16

16

15

15

15

14

15

15

17

18

ft

17

16

16

16

18

19

20

20

494

16.5

980

Dec.

20

20

19

16

16

16

16

16

16

17

17

17

16

15

15

*18

18

18

18

18

18 

27

38

41

41

38

39

33

26

24

24

691

22.3

1,370

Jan.

23

23

22

22

22

22

21

21

20

20

20

21

24

27

*43

96

46

34

31

28

27 

26

34

27

24

24

22

22

20

23

17

852

27.5

1,690

Feb.

20

20

20

20

20

20

21

21

20

20

20

20

20

20

20

18

T-f

20

19

20

20 

20

20

20

20

*20

20

20

20

------

578

19.9

1,150

Mar.

20

23

48

46

31

23

22

22

42

31

22

20

19

18

18

27

57

61

73

146

236 

250

238

222

199

115

72

52

45

40

38

2,276

73.4

4,510

Apr.

36

37

37

35

33

31

30

29

*28

27

27

26

25

26

26

26

26

25

24

23

23 

22

22

22

22

21

22

*23

23

23

800

26.7

1,590

May

22

21

21

21

20

21

21

21

21

21

23

23

23

23

21

21

20

19

19

18

18 

18

*18

18

15

16

16

20

24

23

21

627

20.2

1,240

June

19

16

15

14

14

13

11

10

10

9.4

8.3

8.1

8.1

8.6

10

12

10

*9.4

8.9

8.9

9.4 

8.6

8.6

7.8

7.8

8.1

7.8

7.6

7.4

7.2

304.0

10.1

603

July

7.2

7.6

7.4

7.4

7.8

7.8

7.4

8.1

T7Z

6.8

7.2

6.8

5.9

5.9

5.5

6.1

6.1

*6.8

6.8

5.7

5.7 

6.1

5.9

5.5

5.7

5.9

6.1

5.9

6.8

7.0

6.5

204.8

6.61

406

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Aug.

7.0

7.0

6.8

6.8

6.8

7.0

7.2

7.2

7.0

7.0

7.6

6.8

6.8

8.6

8.1

7.8

8.1

7.8

8.1

8.3

8.3 

8.3

8.1

7.8

7.0

7.6

*7.4

8.6

9.2

HJ

6.3

232.7

7.51

462

Sept.

L_2

.0

.2

.4

.4

.4

.0

.0

.0

.0

10

10

1111

10

10

10

1111

10

111111

~5.4 12

8.6

8.6

9.4

9.4

9.7

275.5

9.18

546

Water year 1955-56: Max 250 Mln 5.5 Mean 21.2 Ac-ft 15,410

Discharge measurement made on this day.
52 SNAKE RIVER MAIN STEM

American Falls Reservoir at American Falls, Idaho

Location. Lat 42°46', long 112°53 T , in sec. 30, T. 7 S., R. 31 E., near right end of dam 

at outlet gates of reservoir on Snake River at American Falls.

Drainage area. 13.580 sq mi, excluding nontributary area on Snake River plains. 

Records available. March 1926 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Bureau of 

Reclamation).

Extremes. Maximum contents during year, 1,725,000 acre-ft June 19 (elevation, 4,354.95 

ft); minimum, 264,000 acre-ft Oct. 1 (elevation, 4,316.61 ft).

1926-56: Maximum contents, 1,729,000 acre-ft June 26, 1951 (elevation, 4,355.02ft); 

minimum since full capacity was attained on July 13, 1927, 17,200 acre-ft Oct. 22, 

1931 (elevation, 4,299.72 ft).

Remarks. Reservoir is formed by concrete gravity dam with earth dikes at each end; parETaT storage began in 1926, full storage in 1927. Capacity, 1,700,000 acre-ft between 

elevations 4,295.66 (bottom of outlet gate) and 4,354.50 ft (top of spillway radial 

gates). Small amount of dead storage. Water is used for irrigation by canals diverting from Snake River at Minidoka and Milner Dams. Contents given herein are computed 

from mean daily elevations; all available for release.

Cooperation. Reservoir elevations and capacity table furnished by Bureau of Reclamation.

Contents, in thousands of acre-feet, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

n(*)

Oct.

£66" 264

274

274

274

279

274

274

278

284

285

290

293

297

300

306

314

318

323

331

337

341

350

358

362

365

371

376

388

397

407

4,322.63

+143

Nov.

412 

125

437

446

456

469

482

492

501

505

514

523

538

545

554

564

572

576

582

594

606

618

632

643

656

666

681

696

707 

717

4,333.04

+310

Dec.

728

737

749

763

775

783

793

807

814

824

836

847

857

868

877

885

893

903

914

924

935

946

953

973

994

1,017

1,039

1,060

1,082 

1,097

Ijl07

4,342.82

+390

Jan.

1,125 

1,136

1,147

1,154

1,163

1,171

1,181

1,190

1,205

1,210

1,216

1,222

1,229

1,239

1,251

1,262

1,269

1,278

1,283

1,292

1,296

1,301

1,308

1,314

1,322

1,324

1,324

1,326

1,332 

1,340

1,343

4,347.75

+236

Feb.

1,343 

1,343

,340

,339

.558

,541

,340

,341

,344

,346

,349

,355

,363

,366

,368

,371

,373

,373

,376

,382

,382

,382

,383

,383

,384

,384

,386

1,388

1,589

4,348.67

+46

Mar.

1.590 

1,592

1,59,6

1,400

1,406

1,410

1,411

1,413

1,413

1,415

1,420

1,425

1,427

1,428

1,430

1,431

1,455

1,455

1,440

1,445

1,449

1,454

1,455

1,456

1,457

1,452

1,457

1,465

1.464 

1,460

1,456

4,549.99

+67

Apr.

1,455 

1,454

1,451

1,452

1,451

; 1,458

'1,459

1,461

1,465

1,470

1,475

1,479

1,487

1,495

1,500

1,509

1,522

1,558

1,553

1,568

1,579

1,588

1,595

1,596

1,602

1,605

1,607

1,606

1,607 

1,610

4,552.88

+154

May

1,608 

1,601

1,599

1,589

1,585

1,578

1.574

1,575

1,579

1,578

- 1,581

1,584

1,591

1,598

1,605

1,607

1,606

1,601

1,597

1,601

1,611

1,624

1,658

1,652

1,669

1,689

1,697

1,709

1,716 

1,718

1,719

4,554.84

+109

June

1,718 

1,717

1,717

1,707

1,704

1,701

1,701

1,697

1,695

1,692

1,690

1,695

1,692

1,691

1.687

1,690

1,704

1,717

1.725

T7716

1,708

1,702

1,701

1,701

1,704

1,706

1,705

1,701

1,695 

1,692

4,554.56

-27

July

1,692 

1,689'

1,685

1,684

1,682

1,675

1,671

1,664

1,655

1,644

1,650

1,617

,600

,585

,567

,552

,537

1,521

1,506

1-466

1,467

1.45C

1,434

1,416

1,400

1,583

1,566

1.35C

1,555 

1 319

1J304

4,346 . 97

-388

Aug.

1.290

1,274

1,262

1,250

1,257

1,224

1,211

1,199

1,187

1,174

1,160

1,146

1,155

1,119

1,103

1,087

1,072

1,057

1,043

1,029

1,014

1,000

984

96£

953

955

918

90E

889 

877

86E

4,557 .08

-459

Sept.

851 552"

821

807

795

781

768

755

744

755

726

717

710

704

698

695

688

682

676

667

654

651

645

658

654

65?

627

625

625 

625

4,550.20

-242

Calendar year 1955.................... * -57

Water year 1955-56.................... t +359

t Elevation, In feet, at end of month.

t Change In contents, In thousands of aore-feet.
SNAKE RIVER MAIN STEM 53

Snake River at Neeley, Idaho

Location.--Lat 42°46'20", long 112°52'45", in SW^- sec. 31, T. 7 S., R. 31 E., on right 

bank 400 ft upstream from fish hatchery buildings and 0.9 mile downstream from American 

Falls Dam. Records computed to show flow at former site in sec. 11, T. 8 S., R. 30 E., 

half a mile north of Neeley and 2-J miles downstream from present site, by adding inflow 

between sites.

Drainage area.--13.600 sq mi, approximately, excluding nontributary area on Snake River 

plains.

Records available. March 1906 to September 1956. Monthly discharge for some periods, 

published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 4,241.6 ft above mean sea level (levels by 

Bureau of Reclamation). Prior to Aug. 8, 1910, staff gages and Aug. 8, 1910, to June 6, 

1930, water-stage recorder, at site 2j, miles downstream at different datum. June 7, 

1930, to Mar. 19, 1945, water-stage recorder at site 0.4 mile upstream from present 

site and at datum 0.4 ft higher than present datum.

Average discharge. 30 years (1926-56), 6,774 cfs (4,904,000 acre-ft per year).

Extremes. Maximum discharge during year, 28,300 cfs June 3 (gage height, 9.48 ft); minimum, 71 cfs Oct. 31 (gage height, 0.88'ft).

1906-56: Maximum daily discharge, 48,400 cfs June 20, 1918 (gage height, 13.5 ft, 

site and datum then in use); minimum, 50 cfs Oct. 22, 23, Nov. 14-16, 1941.

Remarks.--Records excellent. Plow regulated by American Palls Reservoir (see preceding 

page) and other reservoirs, having a usable capacity of 3,200,000 acre-ft. About 

740,000 acres of land irrigated by water diverted from river and tributaries upstream 

from station.

Cooperation. Gage-height record furnished by Bureau of Reclamation.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used June 19 to Aug. l)

0.9 

1.3 

1.7 

2.0 

2.3

73

117

179

270

420

2.6 

3.0 

3.5 

4.0 

5.0

600

900

1,390

2,160

5,050

6.0 

7.0 

8.0 

9.0 

9.5

9,080

14,100

19,400

25,300

28,300

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

*3,860

147

2,720

3,090

3,150

4,360

5,750

3,250 

168

3,210

3,130

3,170

3,190

2,960

2,920

160

2,500

2,510

*976

977

2,700

137

124

2,940

2,960

2,520

2,480

117

73

75

2,220

68,524

2,210

135,900

Nov.

2,260

1,100

1,150

1,140

144

141

1,170

1,150 

1,160

1,170

2,050

141

130

1,630

1,550

1,560

1,570

1,570

117

76

1,540

1,600

1,610

1,610

*1,380

157

143

1,130

1,140

1,140

32,429

1,081

64,320

Dec.

1,160

1,160

154

149

1,(540

1,010

152

«2,1BO 

1,010

154

150

1,000

1,260

1,210

1,220

1,220

164

157

1,210

1,210

1,230

1,220

1,220

154

149

1,220

1,210

1,220

1,230

1,220

 150

27,193

877

53,940

Jan.

152

 3,500"

3,510

3,560

3,570

3,540

242

285 

3,340

3,360

3,380

3,390

3,420

1,090

600

4,090

3,890

3,830

3,850

4,330

4,920

691

4,950

4,950

4,960

5,010

5,000

*5,020

740

4,970

5,020

103,160

3,328

204,600

Feb.

4,860

4,850

4,750

4,850

1,610

5, -110

4,500

4,340 

4,340

4,310

1,860

528

4,350

4,350

4,350

4,710

4,710

4,870

1,680

5,450

5,270

5,260

5,240

5,400

 5,750

4,700

6.610

5,420

5,100

129,128

4,453

256,100

Mar.

5,100

5,130

4,980

2,790

5,840

5,120

5,160

5,140 

5,170

4,880

2,550

5,790

5,190

5,170

5,160

5,480

 5,860

5,160

6,880

5,840

5,830

6,420

8,440

8,480

8,900

9,600

9,890

11,400

12,600

12,600

12,600

209,150

6,747

414,800

Apr.

12,600

12,600

11,300

10,600

9,980

9,550

9,600

9,600 

8,900

*B,530

8,58Q

8,580

8,670

8,670

8,710

8,710

8,760

8,760

8,760

11,200

14,400

15,100

16,600

17,800

18,600

19,200

19,500

 19,300

19,500

19,300

371,560

12,590

737,000

May

19,300

19,200

19,200

19,200

19,100

19,100

16,900

15,600 

15,700

15,700

15,700

15,700

15,700

15,800

15,800

15,900

15,900

15,900

 13,400

12,000

12,400

12,500

12,300

12,400

13,100

16,900

19,200

22,600

26,600

27,900

26 , 000

554,700

17,250

*1,061

June

27,900

27,900

28,100

28,000

27,900

27,900

27,700

27,600 

25,400

22,500

21,700

21,700

*21,800

21,800

20,400

18,200

17,400

19,200

23,000

25,500

23,400

20,000

16,800

14,600

13,700

13,500

13,500

 12,500

12 , OOP

12 , 500

633,900

21,130

tl,257

July

12,800

13,000

15,400

15,100

12,700

12,600

12 , 100

11,200 

11,200

11,800

12 , 000

12,000

12,500

 12,600

12,700

12,300

12,100

12,100

12 , 100

12,2OO

12,200

12,100

12,400

12,400

12,300

12,400

12,400

*12,200

11,900

11,500

11,300

379,400

12,240

752,500

Aug.

11,100

11 , 300

11 , 500

11,400

11,100

11,000

10,800

 10,500

10,800

10,900

10,800

11,100

11,500

11,800

11,800

11,800

 11,500

11,400

11,000

10,800

11,000

11,100

11,100

11 , 100

11 , 100

11,000

11,100

11,200

11,100

11,100

345,300

11,140

684,900

Sept.

10,800

10,700

 10,600

10,600

10,400

10,100

9,790

 9,460 

9,030

8,760

8,760

8,400

,860

,600

,440

,520

,390

,590

,590

 ,550

,350

,350

,480

,790

,220

6,030

5,990

5,410

5.020

5,020

240,000

8,000

476,000

Calendar year 1955: Max 13,700 Mln 73 Mean 5,975 Ac-ft 4,326,000

Water year 1955-56: Max 28,100 Mln 73 Mean 8,400 Ac-ft 6,098,000

* Discharge measurement made on this day. 

t Expressed In thousands.
54 BOCK CREEK BASIN

Rock Creek near Rockland, Idaho

Location.--Lat 42°31'40", long 112°51'40", NE^-NW^- sec. 29, T. 10 S., R. 21 E., on right 

bank 10 ft upstream from culvert on.private road, 3 miles south of Rockland and 

3^ miles upstream from East Fork.

Drainage area . 182 sq mi.

Records available. May 1955 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 4,720 ft (from topographic map).

Extremes.--Maximum discharge during year, 140 cfs Mar. 17 (gage height, 5.70 ft), but

may have been greater during period of no gage-height record; no flow for long periods.

1955-56: Maximum discharge, that of Mar. 17, 1956; no flow for long periods each 

year.

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

shifting control, or indefinite stage-discharge relation, which are poor. Practically 

entire flow diverted for irrigation above station during growing season. Measurements of East Fork made about once a month to supplement this record (see p. 253).

Rating tables, water- year 1955-56, except periods of Ice effect, shifting 

control, and Indefinite stage-discharge relation (gage height, In feet, 

and discharge, In cubic feet per second)

Oct. 1 to July 25 July"26 to Sept. 30

1.0

1.1

1.2 

1.4 

1.7 

2.0

0

1.6

4.1 

7.1

2.5 

3.0 

3.5 

4.0 

5.0

1.0

1.1

1.2

0

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

7J

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.1 *0

*0

.1

o .2

0

0

0

0

0

0

0

0

0

0.5

0.02

1

Nov.

0

T5

0

0

0

0

0

0

0

0

0

0

.4

b.6

b2

b3

b4

b4.5

4.6

4.9

4.9

5.0

5.1

5.5

5.5

5.5

5.5

5.6 575"

5.5

77.6

2.59

154

Dec.

 §77 5.6

5.8

5.8

5.8

6.0

5.9

6.1

6.1

6.3

6.4

6.6

6.7

6.8

6.9

*7.3

7.3

7.4

7.5

7.6

7.5

12

~S.B 16

8.3

8.4

8.6

8.2

7.9

7.6

230.5

7.44

457

Jan.

7.5

7.4

7.3

7.1

779

8.4

8.1

7.9

7.6

7.5

7.4

7.4

7.6

7.5 *9.5

~9.9 13

9.4

9.3

9.3

9.3

9.2

9.8

9.4

9.0

8.9

8.9

8.8

b8.5

b8.0

b7.5

264.3

8.53

524

Feb.

b8.0

b8.0

b8.0

bS.O

b8.0

bS.O

bS.O

8.4

175

8.0

7.9

8.1

7.8

7.6

7.4

7.0

T75

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8.0

*8.3

7.8

7.9

230.0

7.93

456

Mar.

7.6

S79

20

19

13

10

9.5

10

23

21

11

9.9

9.7

blO

11

16

51

77

93

T<5

80

80

70

50

35

30

25

20

17

16

15

938.6

30.3

1,860

Apr.

14

T4

14

14

13

12

12

11

11

*11

11

11

10

10

9.8

9.8

9.7

9.5

9.4

9.3

8.6

8.2

ST?

8.2

8.2

8.4

9.0

*9.2

8.8

8.8

311.1

10.4

617

May

7.4

4.9

4.5

2.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

20

e!3

e!6

e20

312

a6

105.9

3.42

210

June

a2

0

IS

0

0

0

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

0.07

4

July

(*)

0

0

0

Aug.

.Q.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

0

0

0

0

0

0

*0

.1

0

0 

0

0.2

0.006

0.4

Sept.

SL

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.il

0.6

0.02

1.2

Calendar year 1955: Max - Mln - Mean - Ac-ft

Water year 1955-56: Max 93 Mln 0 Mean 5-91 Ac-ft 4,280

* Discharge measurement or observation of no flow made on this day.

b Stage-discharge relation affected by Ice.

e Stage-discharge relation Indefinite; discharge estimated as for periods of no gage-height record.

Note. No gage-height record Feb. 17-26, Mar. 20 to Apr. 9, May 31 to June 18j discharge estimated 

on basis of weather records and records for Bannock Creek near Pocatello. Shifting-control method 

used Mar. 18, 19, Apr. 10-19.
RAPT RIVER BASIN 55

Raft River at Peterson Ranch, near Bridge, Idaho

Location. Lat 42°04' , long 113 0 27', in sec. 5, T. 16 S., R. 26 E., on left bank 100 ft 

upstream from One Mile Creek, 400 ft downstream from road bridge, 1\ miles southwest 

of Bridge Post Office, and 16 miles south of Malta.

Drainage area. 412 sq mi.

Records available . September 1946 to December 1953, May 1955 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,980 ft (by barometer).

Average discharge. 8 .years (1946-53, 1955-56), 22.2 cfs (16,070 acre-ft per year).

Extremes. Maximum discharge during year, 112 cfs May 28 (gage height, 2.37 ft); minimum,

 1.9 cfs Feb. 9 (gage height, 0.95 ft).

1946-53, 1955-56: Maximnm. discharge, 1,090 cfs Feb. 5, 1951 (gage height, 4.52 ft), 

from rating curve extended above 200 cfs on basis of slope area determination of 

peak flow; minimum, 1.2 cfs Jan. 13, 1950 (gage height, 0.90 ft), caused by ice jam 

upstream.

Remarks. Records good. Diversions above station for irrigation.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

1.1

1.2

1.3

3.6 

5.8 

8.9

1.6 

1.8 

2.0

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

7.4

7.7

8.3 elo

7.7

*7.7

7.7

7.7

7.7

7.7

7.7

7.7

7.7

8.0

8.0

8.3

8.0

8.0

7.7

7.0

7.0

7.4

7.0

7.7

8.3

8.0

7.4

7.7

7,7

7.0

8 .0

238.9

7.71

474

Nov.

7.0

7.7

7.7

8.0

8.3

8.6

*8.6

8.6

8.6

8.9

8.9

8.6

8.3

8.6

7.7

7.7

7.7

8.0

8.9

9.9

11

9.9

8.9

8.9

8.9

9.9

12

T2

11

12

270.8

9.03

537

Dec.

13

12

10

8.3

8.9

9.4

9.4

8.6

8.9

8.9

8.9

8.9

9.4

*8.6

8.0

8.3

8.3

8.3

8.9

9.4

9.9

9.9

11

12

13

13

13

13

10

9.9

9.4

308.5

9.95

612

Jan.

9.4

9.9

9.4

9.9

11

12

11

12

12

12

14

14

*14

13

16

24

21

19

18

18

18

18

18

16

13

12

14

12

12

12

10

434.6

14.0

862

Feb.

10

8.5

9.3

9.5

9.9

9.4

9.9

9.4

8.9

9.4

9.9

9.9

12

12

12

9.9

11

10

9.4

11

11

12

13

*T2

11

12

11

11

13

307.3

10.6

610

Mar.

13

24

22

23

19

16

14

16

18

19

17

15

16

15

15

16

25

32

46

48

41

43

43

41

55

53

41

33

31

29

29

866

27.9

1,720

Apr.

34

33

28

24

25

26

22

*21

22

26

28

28

28

28

29

29

30

31

30

28

28

28

29

30

*27

26

26

27

31

30

832

27.7

1,650

May

28

28

28

28

25

24

28

26

22

20

22

23

20

20

20

17

15

16

15

*19

19

16

20

26

40

32

51

84

56

56

40

884

28.5

1,750

June

31

27

27

25

21

20

19

20

16

14

13

13

13

11

11

*13

12

12

11

11

11

11

9.4

8.9

8.9

8.6

8.6

8.6

8.6

8 ,0

431.6

14.4

856

July

8.0

8.0

8.0

8.0

7.4

7.0

6.4

7.0

7.0

7.0

6.4

6.7

7.0

7.4

6.1

6.4

6.1

6.1

6.1

*6.1

6.7

7.0

7.0

6.7

7.7

6.4

6.7

6.1

5.6 BTe

5.6

209.5

6.76

416

Aug.

6.7

6.4

5.8

5.8

5.8

6.1

6.4

5^4

6.4

6.1

5.8

6.1

5.6

5.6

6.4

6.7

8.3

TTT

6.1

6.7

6.1

6.1

5.8

5.6

*5.6

5.8

6.1

6.4

6.1

5.8

5.8

190.1

6.13

377

Sept.

5.6

5.8

6.1

6.1

6.

6.

6.

6.

6.

7. 1

6.

6.

6.

6.

6.

6.

6.1

6.4

6.7

6.7

6.7

6.7

6.7

7.0

7.0

7.4

7.4

7.4

194.8

6.49

386

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56:. Max 84 Mln 5.4 Mean 14.1 Ac-ft 10,250

Discharge measurement made on this day.
56 RAFT RIVER BASIN

Clear Creek near Naf, Idaho

Location. Lat 41°58'15", long 113°17'15", in NE£sw£ sec. 1, T. 14 N. , R. 13 W. , Salt 

Lake meridian, on right bank 2 miles south of Utah-Idaho State line, 3 miles south 

of Naf, and 20 miles upstream from mouth.

Drainage area. 19 sq mi, approximately.

Records available. January 1910 to June 1911 (fragmentary), June to December 1912 (gage 

heights only), October 1944 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317.

Gage. Water-stage recorder and concrete control. Altitude of gage is 5,840 ft (by 

Barometer). Prior to Dec. 31, 1912, staff gage at site 30 ft upstream at different 

datum. Nov. 23, 1944, to Mar. 28, 1950, water-stage recorder at site 600 ft upstream 

at different datum, above one small diversion.

Average discharge. 12 years (1944-56), 9.39 cfs (6,800 acre-ft per year).

Extremes. Maximum discharge during year, 124 cfs May 25 (gage height, 1.92 ft); mini- 

 mum, 0.1 cfs Aug. 4, 5 (gage height, 1.00 ft).

1910-11, 1944-56: Maximum discharge observed, 180 cfs May 13, 1910; minimum, 

0.1 cfs several times during summers 1952-54, 1956.

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

which are fair. Three small diversions for irrigation above station.

Rating table, water year 1955-56, except periods of Ice effect ( 

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used May 23-26)

1.0

1.1

1.2

1.3

1.4

0.2

.8

2.6

7.2

14

1.5

1.6

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.9

.8

.7

78

.9

*1.0

1.3

1.1

1.0

.9

1.0

1.1

1.1

1.0

1.0

1.0

1.0

1.0

1.3

2.1

1.6

1.6

1.3

1.1

1.1

1.1

1.1

1.0

1.0

1.0

.9

33.8

1.09

67

Nov.

0.8

.8

*.9

1.0

1.0

.9

.9

.9

1.1

1.4

1.6

.8 "I

^ bl.O

1.6

1.6

1.1

1.1

1.6

1.6

1.8

T75

1.6

1.6

1.6

36.1

1.20

72

Dec.

1.4

(*)

> bl.5

1.8

1.8

1.8

b2.0

b2.3

b3.0

6.0

475

3.2

4.0

2.1

1.8

bl.7

bl.7

62.6

2.02

124

Jan.

bl.7

*1.6

1.6

1.8

1.6

1.6

1.4

1.1

1.4

1.6

1.6

1.6

1.6

1.6

2.1

3.6

175

1.4

1.6

1.8

1.6

1.6

1.3

.9

bl75

1

f bl.8

J ( )

51.8

1.67

103

Feb.

> bl.7

> al.7

49.3

1.7

98

Mar.

(*)

» al.5

1.-6

2.1

*2.3

2.9

3.2

2.9

2.3

1.8

2.1

2.3

2.6

56.1

1.81

111

Apr.

2.9

2.6

2.1

S76

2.9

2.1

2.6

2.3

2.3

2.6

2.9

2.9

2.9

2.9

2.9

3.2

4.0

4.4

4.4

4.9

6.6

7.8

6.6

6.0

*6.0

6.6

7.2

9.0

975

8.4

133.6

4.45

265

May

7.8

T78

9.0

11

12

13

13

13

14

15

16

12

11

10

9.6

7.8

12

18

41

67

73

77

88

99

*112

114

IS5

90

79

77

82

1,316.0

42.5

2,610

June

*92

eff

82

79

73

63

52

49

49

50

52

49

46

42

*41

36

29

25

24

27

23

21

20

20

20

18

17

16

16

15

1,234

41.1

2,450

July

14

T4

14

13

12

*11

11

7.2

4.4

6.6

8.4

7.8

7.2

6.6

7.2

6.6

5.4

4.9

3.1

4.1

4.9

4.9

4.0

4.4

4.4

4.0

2.4

373

4.9

4.4

3 . 6

213.7

6.89

424

Aug.

*3.6

3.6

2.9

1.2

1.6

2.3

2.3

2.3

2.3

2.1

1.8

1.8

1.6

1.6

1.6

3.3

4.0

273

2.3

1.2

1.2

1.6

1.4

1.3

1.4

1.6

1.8

1.4

T73- 1.0

1.3

61.0

1.97

121

Sept.

1.0

1.0

1.0

1.0

*1.0

1.0

.9

.8

.8

.9

1.1

T7o

.9

.8

.8

.7

.6

.6

.5

7a

.9

1.0

1.0

1.0

.9

.8

- .8

1.0

1.0

1.0

26.6

0.89

53

Calendar year 1955: Max 69 Mln - Mean 6.03 Ac-ft 4,360

Water year 1955-56: Max 114 Mln 0.5 Mean 8.95 Ac-ft 6,500

Peak discharge (base. 70 efs). May 25 (11 p.m.) 124 cfs (1.92 ft). 

* Discharge measurement made on this day.

a Ho gage-height record (stage-discharge relation affected by Ice most of period); discharge 

estimated on basis of 1 discharge measurement and weather records, 

b Stage-discharge relation affected by ice.
SNAKE RIVER MAIN STEM 

Lake Walcott near Minidoka, Idaho

57

Location. Lat 42°40', long 113°29', in sec. 1, T. 9 S., R. 25 E., on south wall in powerhouse at Minidoka Dam on Snake River, 6 miles southeast of Minidoka.

Drainage area.--15.700 sq mi, approximately, excluding nontributary area on Snake River 

plains.

Records available. April 1909 to September 1956.

Page. Staff gage and glass tubes connected to lake through pipes; gage read at 8 a.m. 

and 4 p.m. Datum of gage is 4,200 ft above datum of Bureau of Reclamation, which is 

49.52 ft below mean sea level. Prior to Feb. 1, 1941, hook gages at approximately 

same site at same datum.

Extremes. Maximum contents during year, 98,920 acre-ft June 17 (gage height, 45.31 ft); 

minimum, 59,130 acre-ft Feb. 13 (gage height, 41.80 ft).

1909-56: Maximum contents, 110,740 acre-ft Aug. 8, 1922 (gage height, 46128 ft); 

minimum, -101,410 acre-ft Nov. 17, 1941 (gage height, 15.19 ft).

Remarks. Reservoir is formed by rock-fill dam with concrete core; storage began in 1906. 

Capacity, 107.240 acre-ft between gage heights 36.00 ft (sill of powerhouse penstock) 

and 46.00 ft (top of flashboards). Dead storage below gage height 36.00 ft, about 

115,000 acre-ft. Water used for power development and irrigation on Minidoka project of Bureau of Reclamation. Contents given herein are above gage height 36.0 ft. 

Figures of daily contents computed from mean of twice daily readings.

Cooperation. Gage-height record and capacity table furnished by Bureau of Reclamation.

Contents, in acre-feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13 

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

ft)

(*)

Oct.

94,490

91,690

85,750

82,190

78,800

80,720

87,500

89,710 

90,410

86,680

88,200

90,060

91,920 

94,250

95,670

96.390 

93)790

94,600

94,950

94,950

94,950

96,270

93,900

91,690

94,020

95,180

96,150

94,950

92,510

87,730

86,330

44.24

-7,220

Nov.

86.450

90,290

90,760

90,640

90,640

89,830

88,780

89,360 

89,600

»8,660

89,600

92,740

91,690 

88,900

89,830

92,390 

92,860

93,790

95,180

93,320

90,640

91,690

93,320

94,250

95,310

96.150

94,140

93,440

93,900

K

44.88

+7,460

Dec.

94,250

93,790

94, 490

93,440

91,920

92,040

92,160

91,460 

93,670

94,020

92,860

91,460

91,570 

91,920

92,160

92,620 

92,620

90,290

87,960

86,800

86,220

85, 750

82,860

85,400

83,200

80,610

79,370

79,030

77,790

75 200

7o!950

42.88

-22,840

Jan.

67,650

64,580

66,770

68,970

71,280

72,720

72,260

66,330 

64,580

66,330

67,870

68,090

69,850 

70,510

67,650

63, 920 

66,990

68,640

69,410

70,730

71,610

71,500

65, 340

67,870

70,400

71,280

72,160

73.170

71,940

66,770

68,530

42.66

-2,420

Feb.

70,290

71,280

72,160

72,720

72,050

68,090

70,070

70,180 

70,510

70,730

69,850

65,120

59,670 

60,630

61,500

61,500 

63, 700

65,010

65, 340

61,720

64,140

65, 670

67,320

68,970

70,070

72,380

72,050

75,050

72,380

____ __

43.01

+3,850

Mar.

72,260

21,940

72,160

72,490

69,630

70,510

70,730

71,280 

71,610

71,170

71,500

68,510

70,730 

72,600

73,620

74,520 

75,420

77,450

76,770

76,320

76,770

76,100

79,370

79,710

79,480

79,140

83,090

87,500

94, 250

96,150

95, 9lO

45.06

+23,030

Apr.

95,430

95,910

95,550

95,430

94,490

96,510

93,790

96,030 

96,390

96,150

95,910

94,600

96,150 

95,430

95,910

95,430 

95,430

95,180

94,490

94, 720

94,490

93,900

94,250

93,790

94,950

94,950

95,180

93 , 900

94, 950

95,180

45.00

-230

May

94, 950

94,370

95,430

94, 600

95,180

94, 950

94,720

94,370 

95,070

94,950

94,950

94,950

95,550 

95,910

95,790

95,670 

94,950

95, 430

94, 950

94, 250

94,250

95,180

94,950

94,250

94,950

96,390

95, 790

95,550

96,750

97 350

97)350

45.18

+2,170

June

9 6-, 390

96,150

96,870

96,150

95,790

95,430

95, 670

95, 790 

95, 790

95,430

94,950

95,310

95,070 

94,720

94,490

95,910 

98.560

97,350

97,230

97,470

96,630

96,990

96,390

96,150

94, 950

94,720

94, 950

94,720

93,320

92. 860

44.80

-4,490

July

93,900

93.790

94,370

95, 670

96,390

96,270

96,990

97,110 

96, 630

95,180

94, 490

94,600

93,790 

94,490

94,490

95, 670 

96,390

96,630

96,870

96,990

96,630

96,390

96,270

95,910

95,430

95,430

95,180

95,550

95,790

95,670

95,430

45.02

+2,570

Aug.

95,790

94,020

94,720

94, 950

96,150

96,870

97,470

97,720 

96,150

94,840

93,790

93,090

92,160 

92,270

93,200

93,550 

94,250

95,070

95,070

95,070

95,070

94,950

95,070

94,490

93,550

91,690

91,230

90.990

91,230

92,160

94,250

44.92

-1,180

Sept.

95,790

95,430

96,150

95, 670

96,390

96,270

95,910

96,630 

96,510

95, 670

95,550

94,720

95,180 

95, 430

95,670

95,910 

96,150

96,150

95,180

93,790

91.690

93^790

94,840

96,030

96,630

95,790

95,550

95,180

95,180

94,490

44.94

+240

Calendar year 1955.................... t -990

Water year 1955-56.................... t +940

t Cage height, In feet, at end of month. 

t Change In contents, In acre-feet.

467239 O-58 5
58 DIVERSIONS PROM LAKE WALCOTT 

Worth Side Mlnidoka Canal near Minidoka, Idaho

Location. Lat 42°40', long 113°20' ( in sec. 1, T. 93., R. 25 E., on left bank 600 ft 

downstream from headgates at Minidoka Dam and 6 miles south of Minidoka.

Records available. April 1908 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 4,180.33 ft above mean sea level (Bureau 

of Reclamation benchmark). April to November 1910 at datum 0.08 ft higher.

Average discharge . 15 years (1941-56), 613 cfs (443,800 acre-ft per year).

Extremes. Maximum discharge during year, 1,780 cfs July 2-5 (gage height, 10.11 ft); 

no flow Oct. 20 to Apr. 9, May 30.

1908-56: Maximum discharge, 1,810 cfs July 9, 1953 (gage height, 10.19 ft); no 

flow during most winters.

Remarks.--Records excellent. Plow controlled by headgates. Canal diverts water from 

Snake River for irrigation of 64,000 acres under Worth Side Minidoka project. Diversion began in June 1907.

Cooperation. Gage-height record furnished by Bureau of Reclamation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

620

612

654

708

722

726

694

640

640

670

*654

608

578

517

493

493

459

434

263

£

0

0

0

0

0

0 

0

0

0

0

0

11,185

361

22,180

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0-

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

0

0

0

0

0

0

0

0

*111

190

263

435

512

512

628

714

764

859

1,040

* ,200

,270

,380

,400

,440

. 460 

,460

,460

,460

,460

20,018

667

39,700

May

,460

,520

,560

,560

,500

,460

,490

,480

,340

,300

,240

,140

,080

,060

,180

,390

,560

,630

,650

,640

,680

.690

,690

,680

,550

*1,420 

1,170

946

338

0_

281

40,685

1,312

80,700

June

795

889

963

1,150

*1,350

1,460

1,560

1,600

1,630

1,620

1,540

*1,430

1,360

1,290

1,190

972

896

*951

1,150

1,260

1,240

1,240

1,290

1,400

*1,570

1,640 

1,700

1,760

1,770

1,770

40,436

1,348

80,200

July

,770

,770

* ,770

.780

,780

,770

,770

,770

,770

,760

,770

* ,770

,760

,750

,710

,710

,700

,700

,690

,680

,680

,680

* ,670

,670

,660

,630 

,590

,520

,500

,410

* ,.300

52,260

1,686

103,700

Aug.

,260

,250

,280

,30O

,270

,260

,260

,310

* ,400

,480

,510

,470

 XI ,480

,580

,600

,590

* ,590

,560

,540

,540

,540

,530

,520

,500

,460

,400 

,350

,320

,270

* ,190

,190

43,800

1,413

86,880

Sept.

,190

,190

,160

,140

,140

,120

,010

935

919

926

862

686

542

504

*502

502

576

714

760

712

590

556

556

622

656

652 

684

702

*644

568

23,320

777

46,250

Calendar year 1955 : Max 1,770 Mln o Mean 539 Ac-ft 426,300

Water year 1955-56 : Max 1,780 Mln 0 Mean 633 Ac-ft 459,600

Discharge measurement made on this day.
DIVERSIONS FROM LAKE WALCOTT £ 

South Side Minidoka Canal near Minidoka, Idaho

Location.--Lat 42°40', long 113 "29", in sec. 12, T. 9 S., R. 25 E., on right bank 900 ft 

downstream from headgates at Minidoka Dam and 6 miles south of Minidoka.

Records available. April 1908 to September 1956. Monthly discharge only for some

periods, published in WSP 1317.

[Gage. Water-stage recorder. Datum of gage is 4,184 ft above mean sea level (Bureau of 

Keclamation benchmark). Prior to 1910 at site 600 ft upstream at same datum.

Average discharge. 15 years (1941-56), 482 cfs (349,000 acre-ft per year).

Extremes. Maximum discharge during year, 1,360 cfs July 18; maximum gage height, 6.03 ft 

July 15; no flow Oct. 20 to Apr. 9.

1909-56: Maximum discharge, 1,410 cfs July 12, 1953, July 19, 1955; maximum gage 

height, 6.10 ft, July 24, 1954, July 19, 1956 (backwater from aquatic growth); no flow 

for long periods during nonirrigation seasons.

Remarks. Records good. Flow controlled by headgates. Canal diverts water from Snake 

River for irrigation of 54,000 acres under South Side Minidoka project. Diversion 

began in April 1908.

Cooperation. Gage-height record furnished by Bureau of Reclamation.

Revisions (water years). WSP 1347: 1910.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

487

535

609

692

681

653

642

599

602

594

*594

619

616

624

673

673

645 

428

185

ID

0

0

0

0

0

0

0

0

o

0

0

11,151

360

22,120

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

o

Mar.

0

0

0

Apr.

0

0

0

0

0

0

0

0

0

noo

223

307

294

292

311

423

476 

515

579

712

*839

970

1,120

1,150

1,140

1,150

1,160

1,130

1,110

1,130

15,'lSl'

504

30,010

May

1,140

,150

,180

,200

,220

,200

,120

,090

1,080

1,090

1,040

892

742

718

87T

1,030

1,180 

1,240

1,240

1,240

1,240

1,280

1,300

1,300

1,300

*1,300

1,270

1,070

898

848

796

34,265

1,105

67,960

June

816 8~83

964

1,120

*1,200

1,240

1,250

1,260

1,260

1,250

1,250

*1,230

1,150

1,150

1,140

1,090

1,030 

*958

955

1,020

1,020

1,030

1,150

1,180

*1,220

1,250

1,250

1,270

1,280

1,290

34,156

i;i39

67 , 750

July

1,290

1,280

1,280

*1,290

1,280

1,290

1,290

1,290

1,280

1,280

1,270

*1,270

1,270

1,270

1,270

1,260

1,170 

1,540

1,320

1,320

1,320

1,320

*1,320

1,330

1,330

1,320

1,310

1,310

1,280

1,200

*1,210

39,860

l,-286

79,060

Aug.

1,210

1,170

1,110

1,090

1,060

1,040

1,060

1,080

*1,090

1,090

1,120

1,120

1,160

1,260

1,270

1,270

*1 , 220 

1,160

1,140

1,150

1,220

1,260

1,260

1,230

1,210

1,200

1,190

1,200

1,180

1,190

1,170

36,180

1,167

71,760

Sept.

1,160

1,130

1,150

1,130

*1,100

1,070

1,050

958

895

880

871

774

637

552

499

490

535 

*589

614

612

616

584

549

537

559

647

642

616

*576

544

22,566

752

44,760

Calendar year 1955 : Max 1,390 Min o Mean 492 Ae-ft 356,200

Water year 1955-56 : Max 1,340 Min 0 Mean 528 Ac-ft 383,400

Discharge measurement made on this day.
60 SNAKE RIVER MAIN STEM 

Snake River near Minidoka, Idaho

Location. Lat 42°40', long 113°30', In sec. 2, T. 9 S., R. 25 E. on right bank 1 mile 

downstream from Minidoka Dam and 6 miles south of Mlnldoka.

Drainage area. 15,700 sq ml, approximately, excluding nontributary area on Snake River

plains.

Records available. August 1895 to September 1956. Monthly discharge only for some periods, published in WSP 1317. Prior to January 1902, published as "at Montgomery 

Perry," as "at Montgomery Perry near Minidoka" in 1902, and as "below Minidoka dam, 

at Howell's Perry" in 1911.

gage. Water-stage recorder. Datum of gage is 4,132.2 ft above mean sea level (riverprofile survey). Prior to Apr. 21, 1910, staff gage at site 6 miles downstream at 

different datum, Apr. 21, 1910, to Aug. 28, 1911, staff gage at present site and 

datum.

Average discharge. 30 years (1926-56), 5,742 cfs (4,157,000 acre-ft per year).

Extremes. Maximum discharge during year, 27,100 cfs Way 31 (gage height, 12.50 ft); 

minimum, 85 cfs Dec. 12 (gage height, 1.65 ft).

1895-1956: Maximum discharge, 47,500 cfs May 29, 30, 1897 (gage height. 12.6 ft, 

former site and datum); minimum, 58 cfs Dec. 2, 1951 (gage height, 1.93 ft).

Remarks. Records good. Plow regulated by American Palls Reservoir (see p. 52), Lake 

Walcott (see p. 57), and other reservoirs, having a combined usable capacity of about 

3,300,000 acre-ft; many diversions above station for irrigation.

Cooperation. Gage-height record furnished by Bureau of Reclamation. 

Revisions (water years). WSP 1347: 1911.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19 

20

Zl

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

*5.140 

2,750

2,840

2,880

2,870

2,000

1,540

,370

,340

,400

,330

,180

1,000 

954

925

919

910

921

963

941

1,400

1,710

1,680

1,650

1,810

2,100

2,180

2,180

1,910

1,660

1,370

51,823

1,672

102,800

Nov.

1,590 

*1,060

937

925

933

912

920

901

916

1,130

,160

,120

,090 

,130

b ,120

b ,080

b ,090

b ,090

,160 

,130

,150

,100

,070

,060

,020

* ,030

,090

,010

,080

,020

31,824

1,061

63,120

Dec.

1,060 

1,120

1,070

1,040

980

992

990

964

977

949

962

998

1,110 

bl,100

bl,100

bl,200

* ,740

,670

,700 

,710

,710

,780

,010

,780

,770

,760

,790

,160

,580

,560

;590

45,922

1,481

91 , 080

Jan.

2,590 

2,610

2,610

2,760

2,850

3,190

*3,150

2,660

2,590

2.570

2,580

2,890

3,250 

3,060

2,800

2,950

3,200

3,320

3,420 

3,710

4,440

4,420

4,380

4,240

4,380

4,490

4,700

5,070

4,700

b4,270

b4, 280

108,130

3,488

214,500

Feb.

b4,250 

b4,300

b4 , 400

b4,460

b4 , 480

,490

,440

* ,420

,420

,470

,490

,400

,290 

,310

b ,250

b .200

b ,250

,310

,290 

,290

,510

,790

4,900

4,950

4,980

5,240

5,310

5,460

5,460

- -----

132,810

4,580

263,400

Mar.

5,410 

5,480

5,410

5,240

5,000

5,000

5,100

5,220

5,260

5,310

5,120

4,420

4.290 

4,580

4,980

5,440

5,740

6,260

6,260 

6,450

6,450

6,210

7,930

8,730

8,730

8,460

8,670

8,410

9,990

*12,500

12,900

204, 950

6,611

406,500

Apr.

12,900 

12,700

11,900

11,000

10,200

10,200

9,800

9,390

9,390

*8,700

8,670

8,240

7,'820 

7,730

7,900

7,900

7,900

7,870

7.480 

8,410

11,800

12,600

13, 400

14, 600

15, 300

16,100

16,400

16,200

16.500

16,500

336,000

11,200

666,400

May

16,400 

16,200

16,300

16,300

16,300

16,300

15,000

12,900

13,100

13,300

13,500

13,600

14,100 

14,000

13,700

*13,300

12,900

12,700

11 , 200 

9,170

8.950

9,320

9,230

9,250

9,590

15,500

17,000

19,800

*24,400

26,800

27,OOO

454, 670

14,670

901,800

June

26.700 

26,500

26,700

26,100

*26,400

25, 900

25, 700

25,500

25,700

20,200

18,700

*18,700

18,900 

18,800

18,000

15,100

15,600

16,800

19,500 

22,800

22,500

18,600

15,100

12,500

*11,300

10,800

10,400

9,830

9.080

9,110

565,320

18,840

1A21,000

July

9,140 

9,320

*9.700

9,670

9,320

9,200

9,080

8,610

8,550

8,990

9,110

*9,020

9,050 

9,390

9,420

9,170

9,050

9,110

8,990 

8,990

9,200

9,230

*9, 390

9,510

9,510

9,290

9,290

9,170

8,960

8,900

8.290

283,620

9,149

562,600

Aug.

8,460

8.990

*8,780

8,520

8,320

8,240

8,240

8,150

8,410

8,640

8,670

8,580

8,490 

8,460

8,460

8,580

*8, 700

8,730

8,760 

8,490

8,240

8,260

8,410

8,610

8,550

8,870

8,990

8,760

8,440

8,210

7.870

263,880

8,512

525,400

Sept.

7,820 

8,150

8,210

8, 290_

*8,120

7,900

7,750

7,560

7,480

7,450

7,450

7,540

6,800 

*6,510

6,430

6,260

6,180

6,350

6,400 

6,320

6,620

6,030

5,560

5,140

4,880

4,900

4,980

5,980

5.650

5,650

194,140

6,471

365,100

Calendar year 1955: Max 9,800 Min 901 Mean 4,938 Ac-ft 3,575,000

Water year 1955-56: Max 27,000 Mln 901 Mean 7,304 Ac-ft 5,302,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
GOOSE CREEK BASIN

Goose Creek above Trapper Creek, near Oakley, Idaho

61

Location. Lat 42°07'10", long 113"56'20", in sec. 13, T. 15 S., R 21 E. , on right bank 

a quarter of a mile upstream from flowline of Oakley Reservoir, 5 miles upstream from 

Trapper Creek, 6 miles upstream from Oakley Dam, and 9 miles southwest of Oakley.

Drainage area. 600 sq mi, approximately.

Records available.--April 1911 to September 1916, March 1919 to September 1956. Monthly 

discharge only for some periods, published in WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 4,770 ft (by barometer). Prior to 

A~ug. 29, 1912, at site 200 ft downstream at different datum.

Average discharge.--45 years (1911-16, 1919-56), 45.3 cfs (32,800 acre-ft per year).

Extremes. Maximum discharge during year, 349 cfs Mar. 19 (gage height, 4.06 ft); maximum 

gage height, 4.61 ft Mar. 4 (backwater from ice); minimum discharge, 2.2 cfs 

Sept. 6, 7, 10 (gage height, 1.22 ft).

1911-16, 1919-56: Maximum discharge, 1,670 cfs Jan. 23 to Feb. 24, 1943 (gage 

height, 7.6 ft, from floodmark), from rating curve extended above 6QO cfs by logarithmic plotting; no flow July 22 to Aug. 10, Aug. 22-30, 1934, Aug. 15 to Oct. 3, 

1935, July 22 to Sept. 25, 1940, Sept. 14, 1947.

Remarks.--Records good except those for periods of ice effect, which are fair. Diversions for irrigation above station. Flow of artesian well, completed in 1935, enters 

below station. Practically entire flow passing station is stored in Oakley Reservoir 

(see p. 63) .

Rating tables, water year 1955-56, except periods of ice effect (gage 

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

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

1.5 

1.7 

2.0 

2.3

8.4

16

2.6 91

3.0 149

3.5 237

2.0

1.9 

3.2 

5.0

34

2.3 

2.6 

3.0 

3.5 

4.0

60

93

149

237

336

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Tota:

Mean

Ac-ft

Oct.

11

IT

11

11 *n

11

11

11

11

11

11

12

12

13

13

14

14

14

14

15

15

15

16

16

16

16

17

17

18

19

426

13.7

845

Nov.

18

17

18

19

19

19

*20

19

19

20

21

21

17

19

10

11

12

17

21

24

29

26

24

23

22

23

26

28

31

32

625

20.8

1,240

Dec.

30

31

25

21

IH

16

19

17

20

25

27

30

29

*28

28

27

27

27

28

28

29

32

42

59

60

58

58

52

38

35

36

997

32.2

1,980

Jan.

34

32

31

34

34

36

31

32

29

34

34,

34

*34

33

36

91

98

JS

64

64

57

53

54

52

41

39

48

38

32

33

30

1,370

44.2

2,720

Feb.

26

22

21

24

28

26

27

26

24

25

25

26

27

27

27

26

23

21

23

25

28

35" 30

*29

28

28

28

28

28

756

26.1

1,500

Mar.

3035"

65

120

200

130

55

50

120

170

100

54

51

46

40

46

159

226

303

2So

162

114

97

92

97

101

101

92

86

85

81

3,368

109

6,680

Apr.

83

83

78

74

72

70

*68F§~

68

71

78

92

101

106

112

116

120

127

128

130

140

159

180

196

*202

198

191

200

202

187

3,700

123

7,340

May

172

160

154

155

167

177

ITT

162

152

157

167

165

148

128

116

102

96

92

93

*93

97

98

98

110

136

128

121

123

116

102

sa

4,050

131

8,030

June

77

51

48

43

40

44

40

37

35

30

24

22

23

23

*26

28

28

27

29

30

32

28

22

19

16

13

12

8.3

7.6.

925.9

30.9

1,840

July

7.1

6.3

5.5

5.3

4.8

4.1

3.9

4.3

4.8

4.6

4.1

3.3

3.2

2.9

2.5

2.8

2.9

3.7

5.8

6.6

*6.6

11

13

13

12

12

12

12

25

10

9.4

224.5

7.24

445

Aug.

~9.4 10

8.3

7.6

7.3

7.6

7.3

7.1

6.3

5.5

4.8

4.6

4.4

3.9

4.1

4.1

4.4

4.8

5.3

5.3

5.0

4.6

4.1

3.7

*3.5

3.2

3 4 2

3.3

3.5

3.7

3.3

163.2

5.26

324

Sept.

3.0

2.8

2.5

2.4

2.4

2.3

2!s

2.4

2.3

3.3

4.8

5.0

5.3

5.0

4.8

4.6

3.7

3.0

3.0

3.2

2.9

3.2

4.1

4.4

5.8

5.8

7.1

7.3

9.4

120.6

4.02

239

Calendar year 1955: Max 82 Mln 2.1 Mean 24.6 Ac-ft 17,840

Water year 1955-56: Max 3O3 Mln 2.3 Mean 45.7 Ac-ft 33,180

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 13-16, 

Jan. 29 to Mar. 11.

23-25, Dec. 5, 6, 8-21, Jan. 2, 3,
62 GOOSE CREEK BASIN

Trapper Creek near Oakley, Idaho

Location. lat 42°10' , long 113°59', in sec. 34, T. 14 S., R. 21 E., on left bank 4 miles 

upstream from Oakley Dam and 7 miles southwest of Oakley.

Drainage area. 32 sq mi, approximately.

Records available.--May 1911 to September 1956, March 1919 to September 1956. Monthly 

discharge only for some periods, published in WSP 1317.

Sage. Water-stage recorder and concrete control. Altitude of gage is 4,820 ft (by barometer). Prior to Sept. 1, 1912, water-stage recorder at approximately present site at 

different datum. Sept. 1-30, 1912, staff gage at site three-quarters of a mile downstream at different datum. Apr. 8, 1913, to Sept. 30, 1916, and Mar. 28, 1919, to 

Aug. 15, 1931, water-stage recorder at site 1 mile upstream from present site at different datum.

Average discharge . 42 years (1911-16, 1919-56), 14.8 cfs (10,710 acre-ft per year).

Extremes. Maximum discharge during year, 34 cfs Mar. 18 (gage height, 5.15 ft); minimum, 

3.0 cfs Nov. 15, Jan. 31; minimum gage height, 4.63 ft Jan. 31.

1911-16, 1919-56: Maximum discharge recorded, 270 cfs Aug. 17, 1941 (gage height, 

6.99 ft), from rating curve extended above 100 cfs on basis of velocity-area studies 

and peak flow over weir (a higher flow may have occurred Aug. 15, 1931); minimum 

recorded, 2.3 cfs Feb. 22, 1949.

Remarks. Records excellent. A few small diversions above station. Plow of artesian well, 

completed in 1936, enters above. Practically entire flow passing station is stored In 

Oakley Reservoir.

Cooperation. Water-stage recorder inspected occasionally by employees of Oakley Canal 

CcTi

Revisions (water years) . WSP 1063: 1941, 1943.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Discharge, in cubic feet pe cond, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

9.9

9.3

9.3

9.3

*9.9

9.9

9.3

9.3

9.3

8.8

9.9

10

11

10

10

9.9

9.3

9.3

10

10

10

10

10

9.9

9.9

9.9

9.9

9.9

9.9

9.9

9.9

302.9

9.77

601

Nov.

9.9

9.9

9.9

9.9

10

9.9

*9.9

9.3

9.3

9.9

10

9.9

B.B

9.9

5.5

6.2

11

12

11

10

10

9.9

9.9

9.9

9.9

10

10

10

10

10

291. B

9.73

579

Dec.

11

9.9

10

9.9

8.5

11

10

8.8

10

10

10

10

10

*9.3

11

10

10

10

10

10

10

12

13

13

13

12

12

11

11

11

11

328.2

10.6

651

Jan.

11

11

11

10

10

11

10

9.9

10

10

11

11 *11

11

15

19

16

14

14

14

14

13

15

12

13

13

13

9.9

11

11

6 . 2

371.0

12.0

736

Feb.

6.9

8.3

9.9

12

14

12

13

12

11

12

12

12

12

12

11

7.6

11

13

11

11

11

10

10 *11

11

10

11

11

11

31S.7

11.0

634

Mar.

11

11

14

14

12

12

11

13

14

12

12

11

11

11

11

16

16

18

18

16

16

17

17

17

17

17

18

18

16

16

16

449

14.5

891

Apr.

16

16

15

15

16

15

*15

15

15

16

18

18

19

20

19

19

19

19

20

21

24

26

28

30

*28

28

30

30

28

28

626

20.9

1,240

May

27

27

27

2B

50

30

30

28

30

30

30

28

27

26

25

24

24

25

27

*28

30

50

50

50

30

30

30

30

30

30

30

881

28.4

1,750

June

28

28

28

27

26

26

25

24

22

22

21

20

20

20

*20

20

19

18

16

18

18

16

16

16

14

12

11

11

11

10

583

19.4

1,160

July

11

11

11

12

12

12

12

12

11

11

10

9.9

9.9

9.9

10

10

10

10

10

9.9

*9.9

9.9

9.9

9.9

9.9

9.3

979

9.9

11

11 

9.9

525.1

10.5

645

Aug.

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.3

8.8

8.8

8.8

8.3

8.3

8.8

9.3

9.3

9.9

975

9.3

8.8

8.8

8.5

8.3

8.3

*8.8

9.5

9.9

9.9

9.5

8.8

1

280.1

9.04

556

Sept.

8.5

8.5

8.5

8.8

8.8

8.8

8.5

8.8

8.8

9.3

10

To

9.9

8.8

8.3

8.3

8.5

8.0

870

8.5

8.5

8.8

8.3

8.5

8 5

8.3

8.8

9.3

9.5

9.3

261.4

8.71

518

Calendar year 1955: Max 21 Min 5.5 Mean 11.7 Ac-ft 8,500

Water year 1955-56: Max 30 Min 5.5 Mean 13.7 Ac-ft 9,960

Discharge measurement made on this day.
GOOSE CREEK BASIN I 

Oakley Reservoir near Oakley, Idaho

Location. lat 42 C 12' , long 113°55' , in sec. 19, T. 14 S., R. 22 E., just upstream from 

right abutment of dam on Goose Creek, 4 miles southwest of Oakley.

Drainage area. 670 sq mi, approximately.

Records available.--October 1912 to September 1956.

Gage. Staff gage below 54.5 ft and wire-weight gage above, read about once a week. Altitude of gage is 4,530 ft (by barometer). Staff gage only prior to Apr. 15, 1954.

Extremes. Maximum contents observed during year, 26,000 acre-ft June 1 (gage height, 

81.2 ft); minimum observed, 976 acre-ft Oct. 5 (gage height, 16.10 ft).

1912-56: Maximum contents observed, 74,600 acre-ft June 15, 1921 (gage height, 

136.2 ft); reservoir drained at close of seasons in 1915, 1919-20, 1926, 1933, 1949-50.

Remarks. Reservoir is formed by earth dam constructed in 1911-13; storage began in 1911. 

Capacity, 74,350 acre-ft between gage height 0.0 ft (bottom of diversion tunnel) and 

136.0 ft (crest of spillway). Dead storage negligible. Water is used for irrigation 

of lands along Goose Creek in Oakley Canal Co. project. Figures given herein represent usable contents.

Cooperation.--Gage readings and capacity table furnished by Oakley Canal Co.

Capacity table, water year 1955-56 (gage height, in feet, and 

contents, In acre-feet)

16.0

20.0

25.0

30.0

40.0

965

1,430

2,320

3,450

6,320

50.0

60,0

70.0

80.0

90.0

9,900

14,100

19,300

25,200

32,100

Usable contents, In acre-feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

29

30

31

( t )

(*)

Oct.

-

-

976

-

-

-

-

-

-

-

1,320

-

-

-

-

-

-

-

-

-

1,810

-

-

-

-

a2, 160

_

+1,395

Nov.

2^220

-

"

2,590

-

.

-

-

-

-

3,060

-

-

-

-

-

-

-

-

-

-

-

-

_

a5.960

_

+1,800

Dec.

4,020

-

"

-

-

-

-

-

-

4,900

4,960

-

-

-

-

-

-

-

-

-

-

_

-

-

-

a6,480

_

+2,520

Jan.

6, 580

-

"

-

-

-

-

-

7,530

-

7,850

_

-

-

-

-

-

-

-

-

-

9,450

-

_

_

9. 750

49.6

+3,270

Feb.

-

-

"

-

-

-

-

-

-

10,700

-

_

-

-

-

-

-

-

-

11,400

-

-

-

all, 800

_

+2,050

Mar.

11,900

-

"

-

-

13,800

-

-

-

-

15,000

-

-

-

-

-

-

17,400

-

-

-

_

18,600

-

a!9,300

_

+7,500

Apr.

19, 500

-

"

20,300

-

-

"

-

-

-

21,400

-

_

22,100

-

-

-

22,900

-

-

23,900

24,100

,

-

-

25,000

79.6

4-5,700

May

-

-

25,200

25,400

-

-

-

-

-

25,900

-

-

-

-

25,900

-

25,800

-

-

-

-

-

25,600

_

-

a25, 900

_

+900

June

26,000

25,900

"

-

-

-

24,300

-

-

-

23,100

-

-

22,500

-

-

-

-

-

-

21,800

-

-

-

a20,500

_

-5,400

July

20,200

-

"

-

19,100

-

-

-

-

-

15,400

-

-

-

-

13,300

-

12,800

-

-

-

-

-

10,900

alO, 600

_

-9,900

Aug.

10,400

-

-

-

-

9,410

-

-

9,450

-

-

-

-

8,480

-

-

-

-

-

7,330

-

-

-

a6.22Q

_

-4,380

Sept.

6,030

5,360

-

"

-

-

-

-

4,110

-

-

4,140

-

-

-

-

3,200

-

-

-

-

-

-

-

-

1,450

20.0

-4,790

Calendar year 1955.................... * +100

Water year 1955-56.................... * +665

\ Elevation, In feet, at end of month.

* Change in contents, in acre-feet.

a No gage-height record; contents interpolated.
64 DIVERSIONS PROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MILNER

P. A. lateral near Milner, Idaho

Location. Lat 42°32', long 114°01', in sec. 22, T. 10 S., R. 21 E., on left bank 600 ft 

downstream from pumping station and 2-J miles northeast of Milner.

Records available. October 1915 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317.

gage. Staff gage read twice daily. Altitude of gage is 4,196 ft (river survey). 

Average discharge.--8 years (1948-56), 26.3 cfs (19,040 acre-ft per year).

Extremes.--Maximum discharge during year, 75 cfs July 7, 8, July 16 to Aug. 4,

Aug. 6-14, 16-22 (maximum gage height, 1.51 ft July 22-24); no flow Oct. 1 to Apr. 24, 

Sept. 26-30.

1915-56: Maximum discharge, 75 cfs several days during 1953 and 1956; no flow for 

many days.

Remarks. Records excellent. Plow regulated by pumping plant which lifts water 65.3 ft 

from Snake River for irrigation on North Side Twin Falls tract.

Cooperation. Gage-height record furnished by North Side Canal Co.

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

1.0 

1.2 

1.5

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

o

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

00"

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

6

15

28

31

39

55

174

5.80

345

May

60

58

55

58

62

62

62

62

62

62

62

62

62

62

62

62

62

68

66

66

68

70

71

71

71

71

71

71

*71

71

71

2,017

65.1

4,000

June

71

71

71

71

71

71

71

71

67

67

*67

67

67

71

71

71

66

68

66

*66

65

62

63

63

63

63

*63

64

65

65

2,018

67.3

4,000

July

65

TT

74

71

72

72

75

75

74

74

*72

72

72

72

73

75

75

75

75

75

75

75

75

75

75

75

75

75

75

75

75

2,284

73.7

4,530

Aug.

75

7F

75

75

74

75

75

75

75

75

75

75

*75

75

73

75

75

75

75

75

75

75

73

73

73

73

*73

73

58

58 

58

2,259

72.9

4,480

Sept.

59

59

59

59

59

59

59

59

59

*59

59

59

59

59

59

59

58

*55

55

55

40

53

44

44

42

0

0

0

0

0

1,390

46.3

2,760

Calendar year 1955: Max 73 Mln 0 Mean 25 9 Ac-ft 18,740

Water year 1955-56: Max 75 Mln 0 Mean 27.7 Ac-ft 20,120

Discharge measurement made on this day.
DIVERSIONS FROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MIIJffiR 65

Milner low-lift canal near Milner, Idaho

Location. Lat 42°31', long 114°01' 

1 mile south of Milner.

in sec. 32, T. 10 S., R. 21 E., at head of canal,

Records available. October 1919 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317. Prior to October 1922, published as Murtaugh Canal 

near Milner.

Gage. Rated pumps. Prior to May 1, 1945, water-stage recorder at site 600 ft downstream.

Average discharge.--12 years (1944-56), 76.2 cfs (55,170 acre-ft per year).

Extremes.--1919-56: Maximum daily discharge, 256 cfs July 25-31, 1954; no flow for many

Remarks. Records excellent. Flow controlled by pumping plant which lifts water from 

Snake River above Milner Dam for irrigation of 12,170 acres of land in Milner lowlift irrigation district. Pumps rated by current-meter measurements.

Cooperation. Record of pump operation furnished by Milner low-lift irrigation district.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

31

50

65

82

82

99

132

156

163

*172

172

194

205

1,601

53.4

3,180

May

203

203

203

203

206

218

218

218

218

218

218

218

211

203

203

203

203

203

218

218

218

218

218

228

236

236

236

173

173

173

*173

6,488

209

12,870

June

173

173

173

173

173

173

173

173

173

185

*208

208

208

208

208

190

180

180

*180

180

180

184

202

202 '02

*202

202

202

203

207

5,678

189

11,260

July

207

207

207

207

207

203

205

214

*214

214

224

234

234

234

234

234

*234

234

234

234

234

234

234

234

234

234

234

234

234

234

228

6,983

225

13,850

Aug.

228

?28

228

228

228

*225

225

225

225

225

225

225

225

225

225

225

225

216

21.6

21.6

21.6

216

216

216

216

216

216

*216

216

216

203

6,851

221

13,590

Sept.

203

206

206

206

206

206

200

194

194

194

*174

170

170

170

170

170

170

154

147

141

136

*131

131

131

131

131

131

110

104

89

4,876

163

9,670

Calendar year 1955: Max 237 Min o Mean 79.9 Ac-ft 57,850

Water year 1955-56: Max 236 Min 0 Mean 88.7 Ac-ft 64,420

Discharge measurement made on this day.
66 DIVERSIONS PROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MILNER

Gooding Canal at Milner, Idaho

Location.--Headgates of canal, lat 42°31', long 114°01', in sec. 28, T. 10 3., R. 21 E., 

at Milner Dam.

Records available. October 1929 to September 1956. Monthly discharge only for some periods, published in WSP 1317.

Gage. Water stage recorder on Milner-Gooding Canal at site 3 miles downstream from headgates. Staff gage on A lateral lj miles downstream from headgates and differential 

recorder on control gates of diversion 3 miles downstream from hsadgates.

Average discharge.--21 years (1935-56), total 986 cfs (713,800 acre-ft per year); MilnerGooding project, 566 cfs; North Side Canal Co. project, 420 cfs.

Extremes. Maximum daily discharge during year, 2,620 cfs July 16, 18; no flow for many 

1930-56: Maximum daily discharge, 2,740 cfs Aug. 2, 1953; no flow for many days.

Remarks. Records good. Gooding Canal diverts water from Snake River for Milner-Gooding 

project of Bureau of Reclamation and in part for project of North Side Canal Co. The 

latter project also receives water through the North Side Twin Falls Canal and P. A. 

lateral. Discharge of canal is computed by combining the discharge of Milner-Gooding 

diversion and that of North Side Canal Co. diversions below their diversion point and 

adding 35 cfs to that sum for loss between headgates and division point.

Cooperation. Gage-height record furnished by North Side Canal Co. and American Falls 

Reservoir District No. 2.

Discharge, In second-feet, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

650 

910

1,060

1,050

1,050

880

700

260

0

0

0

0

0

0

0

0

0

0

0

0

480

1,000

1.160

1,150

1,140

1,010

840

640

580 

580

580

15,720

507

31,180

Nov.

560 

570

570

570

560

560

550

580

580

24O

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

5,340

178

10,590

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

430

930

,070

,150

,260

,330

,390

,470

,530

,560

,610

,590

,620 

1.640

18,580

619

36,850

May

1,710 

1,980

2, 130

2, 110

2, 170

2,220

2,240

2,220

2,260

2,290

2,310

2,310

2,350

2,330

2,350

2,350

2,370

2,420

2,440

2,420

2,420

2,460

2,400

2,370

2,380

2,340

2,310

2,300

2,290 

2,300

2,300

70,850

2,285

140,500

June

2,280 

2,290

2,290

2,200

2,200

2,200

2,230

2,270

2,340

2,360

2,350

2,370

2,370

2,370

2,340

2,200

2,280

2,370

2,390

2,410

2,410

2,410

2,410

2,400

2,430

2,420

2,420

2,470

2,460 

2,450

70,390

2,346

139,600

July

2,500 

2,510

2,540

2,560

2,540

2,530

2,560

2,570

2,550

2,540

2,560

2,590

2,570

2,570

2,610

2,620

2,610

2,620

2,600

2,570

2,580

2,590

2,580

2,610

2,590

2,580

2,570

2,590

2,580 

2 590

2, 570

79,750

2,573

158,200

Aug.

2 , 530 

2,560

2,590

2,510

2,490

2,460

2,400

2,400

2,400

2,410

2,380

2,370

2,340

2,500

2,320

2,350

2,360

2,360

2,370

2,400

2,380

2,330

2,350

2,340

2,360

2,360

2,390

2,370

2,380 

2,340

2,340

74,240

2,395

147,300

Sept.

2,330 

2,350

2,340

2,350

2,560

2,360

2,350

2,330

2,330

2,310

2,320

2,310

2,300

2,220

2,170

2,140

2,070

2,060

2,040

2,040

2,010

2,070

2,020

1,990

1,950

1,920

1,920

1,910

1,350

£

62,220

2,074

123,410

Distribution to projects in acre-feet ill 0 

31,180

0 

10,590

0

O

0 

0

0

0

0 

0

22,180 

14,680

83,050 

57,480

85,170 

54,450

98,880 

59,310

89,890

57,360

72,160 

51,250

Calendar year 1955: Max 2,680 Mln 0 Mean 1,103 Ac-ft 798,800 

Water year 1955-56: Max 2,620 Mln 0 Mean 1,085 Ac-ft 787,600

t To Milner-Gooding project, total for water year, 451,300 acre-ft.

* To North Side Canal Co. project, total for water year, 336,300 acre-ft.
DIVERSIONS PROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MILNER 67

North Side Twin Palls Canal at Milner, Idaho

Location. Lat 42°32' , long 114°01 I , in sec. 20, T. 10 S., R. 21 E., on right bank half 

a mile north of Milner and three-quarters of a mile downstream from headgates at 

Milner Dam.

Records available. May 1909 to September 1956. Monthly discharge only for some periods, 

published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 4,123.4 ft above mean sea level, datum of 

T929. Prior to Apr. 1, 1916, staff gages at two sites within half a mile of present 

site at slightly different datum.

Average discharge. 21 years (1935-56), 1,257 cfs (910,000 acre-ft pep year).

Extremes. Maximum discharge duping year, 2,880 cfs July 25; maximum gage height,8.56 ft 

July 29, 30; no flow for several days.

1909-56: Maximum dally discharge, 3,200 cfs for several days in 1921, 1928-29; no 

flow at times when headgates were closed.

Remarks. Records excellent except those for periods of ice effect, which are good. Plow 

controlled by headgates. Water diverted by this canal and by P. A. lateral and part 

of that diverted by Goodlng Canal, all at Milner, is used for irrigation of 163,000 

acres of land under the North Side Canal Co. system. Diversions began in April 1908.

Cooperation. Gage-heIght record furnished by North Side Canal Co. 

Revisions (water years). WSP 1347: 1912, 1917.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac- ft

Oct.

1,160 

381 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0 

0

1,541

49.7

3,060

Nov.

0 

0 

0

0

0

0

0

0

0

402

636

653

546

633

620

620

616

603

560

560

560

554

560

*564

560

560

554

567 

567

564

12,159

405

24,120

Dec.

564 

554 

580

583

560

530

514

508

469

*444

444

434

419

407

404

407

410

407

407

428

434

428

404

422

431

425

422

419 

422

425 

431

14,136

456

28,040

Jan.

434 

438 

431

428

428

434

441

434

434

428

422

422

425

431

434

419

422

422

422

438

453

444

425

425

476

485

*466

b469 

b469

469 

447

13,615

439

27,000

Feb.

b440 

b440 

b440

b410

392

389

b389

380

b380

380

380

380

386

357

357

b352

346

*352

349

349

349

346

352

346

346

341

349

357 

374

------

10,808

373

21,440

Mar.

369 

3lO 

360

363

360

310

323

320

330

320

344

325

315

310

333

346

346

330

346

336

346

346

352

369

369

357

346

357 

352

363 

106

10,409

336

20,650

Apr.

0 

V 

0

0

0

0

0

0

380

643

*766

1,010

1,090

1,080

1,070

1,400

1,890

2,060

2,010

2,020

2,090

2,020

2.210

2,010

1,380

1,150

1,390

2,070 

2,120

*2,160

34,019

1,134

67,480

May

2,220 

2,530 

2,500

2,430

2,350

2,320

2,320

2,310

2,320

2,330

2,320

2,310

2,310

*2,310

2,290

2,300

2,410

2,450

2,440

2,450

2,460

2,450

2,440

2,440

2,440

2,440

2,430

2,420 

2,420

2,420 

*2,420

74,000

2,387

146,800

June

2,490 

2,540 

2,540

2,510

2,540

*2,560

2,560

2,570

2,570

2,570

2,550

2,560

2,550

2,560

2,560

2,460

2,530

2,550

*2 , 540

2,540

2,540

2,540

2,550

2,540

2,540

*2,600

2,640

2,670 

2,680

2,700

76,850

2,562

152,400

July

2,780 

*2,780 

2,780

2,800

2,780

2,770

2,800

2,800

*2,770

2,760

2,780

2,780

2,770

2,780

2,780

2,780

*2,780

2,790

2,780

2,780

2,780

2,800

2,820

2,840

2,860

*2,860

2,840

2,840 

2,840

»2,840 

2,770

86,710

2,797

172,000

Aug.

2,760 

2,740 

2,740

2,740

2,660

*2,620

2,610

2,600

2.550

2,550

*2 , 550

2,550

2,570

2,640

2,640

2,650

2,650

2,640

2,660

*2,660

2,660

2,660

2,660

2,670

2,660

2,670

2,710

2,680 

2,680

2,640 

2,600

82,070

2,647

162,800

Sept.

2,510 

2,470 

2,500

*2 , 500

2,490

2,490

2,480

2,430

2,400

2,280

2,240

*2,250

2,120

1,960

1,910

1,830

1,790

1,780

1,700

1,670

1,600

1,590

1,550

1,460

*1,290

1,240

1,240

1,080 

1,390

1,740

57,980

1,933

115,000

Calendar year 1955: Max 2,980 Min 0 Mean 1,248 Ac-ft 903,700

Water year 1955-56: Max 2,860 Min o Mean 1,296 Ac-ft 940,800

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
68 DIVERSIONS FROM SNAKE RIVER BETWEEN GOOSE CREEK AND SNAKE RIVER AT MINER

South Side Twin Falls Canal at Milner, Idaho

Location. Lat 42"SI 1 , long 114°01', in sec. 29, T. 10 S., R. 21 E., on left bank 50 ft 

upstream from highway bridge and 700 ft downstream from headgates at Milner Dam.

Records available. May 1909 to September 1956. 

published in WSP 131V.

Monthly discharge only for some periods,

Sage. Water-stage recorder. Datum of gage is 4,121.5 ft above mean sea level, datum of 

1929. Prior to May 13, 1913, staff gage and May 13, 1913, to Apr. 24, 1914, waterstage recorder, at highway bridge 50 ft downstream at present datum.

Average discharge. 30 years (1926-56), 1,757 cfs (1,272,000 acre-ft per year).

Extremes. Maximum discharge during year, 3,760 cfs July 2; maximum gage height, 10.54 ft 

July 13; minimum discharge, 25 cfs Mar. 31 to Apr. 5 (gage height, 0.90 ft).

1909-56: Maximum daily discharge, 4,600 cfs Aug. 12, 1918, including about 

1,200 cfs wasted through spillway below station and returned to river; maximum discharge for irrigation use, 3,810 cfs July 21, 1952, July 24, 1953, and July 27, 1955; 

no flow Sept. 20, 1920.

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

controlled by headgates. Diversions began in March 1905 when 30,000 acres were reported as irrigated. By 1912 this had increased to 147,000 acres and during recent 

years the irrigated area has been reported as 202,000 acres.

Cooperation. Gage-height record furnished by Twin Falls Canal Co. 

Revisions (water .years) . WSP 1347: 1910-16.

Rating table, water year 1955-56, except periods of ice effect (f 

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

(Shifting-control method used Oct. 1 to Nov. 9, June 6-18, 

July 8-14, July 31 to Aug. 31, Sept. 21-30)

0.9 

1.1 

1.3 

1.5 49

1.7 72

2.0 117

2.5 216

3.0 338

4.0 604

6.0 1,290

8.0 2,240

10.5 3,760

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

a

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

1,600 

1,520

1,340

1,290

1,290

1,300

1,270

1,240

1,240

1,210

1,070

*795

221

413

288

81

78

305

629

759

878

914

901

787

824

894

881

787

728 

725

692

26,950

869

53,450

Nov.

584 

543

*534

508

499

499

502

502

478

444

441

438

470

502

498

494

492

489

502

502

499

489

486

*491

491

497

497

497

478 

464

14,810

494

29,380

Dec.

467 

420

384

379

376

376

379

397

410

*405

405

423

425

420

420

434

448

449

449

449

446

446

457

441

449

449

446

449

446 

451

462

13,257

428

26,290

Jan.

462 

464

467

462

462

462

464

464

459

373

192

190

f23

230

244

296

502

596

596

604

*615

624

3o7

560

550

520

483

465

450 

450

450

13,986

451

27,740

Feb.

390 

390

390

390

390

390

390

390

400

400

400

400

400

400

400

400

400

*401

401

404

407

412

412

412

414

414

415 4TB"

412

11,639

401

23,090

Mar.

405 

405

402

376

320

283

276

263

150

198

214

214

212

214

216

221

225

232

239

239

234

234

230

234

234

230

230

205

160 

160

66_

7,521

243

14,920

Apr.

25 

25

25

25

224

553

744

865

1,010

1,300

*1,480

1,070

543

1,260

1,700

1,740

1,780

2,050

2,390

2,490

2,690

2,830

3,060

3,160

3,140

3,090

3,120

3,270

3,370 

*5.400

52,429

1,748

104,000

May

3,270 

3,250

3,290

3,330

3,330

3,310

3,310

3,310

3,340

3,320

3,210

5.090

3,110

*3,140

3,210

3,400

3,500

3,440

3,440

3,440

3,460

3,450

3,580

3.650

3,610

3,530

3,510

3,380

3,350 

3,370

*3,380

104,310

3,365

206,900

June

3,350 

3,300

3,260

3,180

3,160

*3,110

5,070

3,150

5,200

5,230

5,230

5,250

3,250

5,500

3,500

3,230

3,290

5,310

*3,250

3,250

3,250

5,540

5,440

5,500

5,560

*5,560

5,550

3,560

3,600 

5,650

99,640

5,321

197,600

July

3,710 

*5,750

3,730

3,720

3,670

3,660

3,580

3,520

*5.510

5,560

3,610

3,650

3,650

3,680

3,670

3,670

 3,670

3,680

3,670

3,690

3,690

3,690

3,690

3,690

3,700

*3,690

3,670

3,660

3,630 

*3,570

3,540

113,270

3,654

224,700

Aug.

3,520 

3,500

3,470

3,440

3,590

*5,560

5,370

5,380

3,420

5,460

*5,480

3,480

3,480

3,470

3,460

3,460

3,490

3,490

3,490

*3,480

3,460

3,480

3,480

3,480

3,480

3,500

3,510

*3,500

3,430 

3,420

3,410

107,240

3,459

212,700

Sept.

3,400 

3,400

3.450

3,580

3,530

3,140

3,130

3,130

3,140

3,130

 3,060

2,960

2,840

2,730

2,640

2,620

2,590

2,560

2,480

2,380

2,190

2,150

2,150

1,920

*1,730

1,690

1,650

1,640

1.620 

1,630

77,840

2,595

154,400

Calendar year 1955 : Max 3,790 Mln 48 Mean 1,684 Ac-ft 1,219,000

Water year 1955-56: Max 3,750 Mln 25 Mean 1,757 Ac-ft 1,275,000

* Discharge measurement made on this day. 

Note_.--Stage-discharge relation affected by ice Nov 

Feb. 26.

15, 17, Dec. 15-17, Jan. 24-26, Jan. 28 to
SNAKE RIVER MAIN STEM 69

Snake River at Mllner, Idaho

Location. Lat 42°32' , long 114°01 ! , in sec. 29, T. 10 S., R. 21 E., on left bank 200 ft 

downstream from highway bridge at Milner and a third of a mile downstream from Milner 

Dam.

Drainage area. 17,180 sq ml, approximately, excluding nontrdbutary area on Snake River 

plains.

Records available. May 1909 to September 1956. Monthly discharge only for some periods, 

published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 4,062.9 ft above mean sea level, datum of 

1929. Prior to May 28, 1919, staff gages at slightly different sites and datums.

Average discharge. 30 years (1926-56), 2,084 cfs (1,509,000 acre-ft per year).

Extremes. Maximum discharge during year, 18,900 cfs May 30 (gage height, 18.68 ft); minimum, 5 cfs Oct. 1 (gage height, 1.34 ft).

1909-56: Maximum discharge, 40,000 cfs June 21, 1918 (gage height, 19.9 ft, site 

and datum then In use); minimum, 2 cfs Mar. 17-28, 1936 (gage height, 1.18 ft).

Remarks. Records good. Plow regulated by American Falls Reservoir (see p. 52), Lake 

Walcott (see p. 57) and other reservoirs having a combined usable capacity of about 

3,300,000 acre-ft. About 1,340,000 acres of land irrigated by diversions from river 

and Its tributaries above station, from which the return flow in large part enters 

Snake River between Mllner and King Hill stations. Plow Includes some stored water 

released for use downstream by Idaho Power Co.

Cooperation. Gage-height record furnished by Twin Palls Canal Co. and North Side Canal Co. 

Revisions (water years).--WSP 1347: 1909-12, 1915-16, 1942-44, 1946-48.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Jan. 7 to Mar. 30)

3.0 128

3.5 223

4.0 360

5.0 726

6.0 1,400

7.0 2,320

8.0 3,500

10.0 5,580

12.0 7,910

14.0 10,600

16.0 13,800

19.0 19,700

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

132

?48

246

243

243

271

408

253

266

264

282

*758

1,860 

1,740

1,590

1,710

1,340

816

646

646

330

248

246

246

243

*243

248

686

936

912 

900

19,200

619

38,080

Nov.

864

870

834

*804

764

588

264

253

251

248

253

258

261 

253

251

256

266

271

271

274

290

271

271

*266

266

269

261

266

266

266

11,046

368

21,910

Dec.

264

5¥4

264

271

271

266

313

385

385

*385

391

391

448 

525

525

528

828

1,130

1,120

1,110

1,110

1,090

1,030

1,140

1,140

1,140

1,110

1,220

1,500

1,700

1 , 790

24,034

775

47,670

Jan.

1,800

1,940

1,990

1,990

1,990

2,170

2,300

2,220

2,210

2,210

2,420

2,370

2,400 

2,620

2,720

2,520

2,540

2,560

2,580

2,660

*2,780

3,210

3,590

3,740

3,940

3,700

3,850

3,930

4,250

4,170

3,730

87,100

2,810

172,800

Feb.

3,650

3,680

3,830

4,060

4,130

4,130

4,060

4,030

4,020

4,000

3,980

3,940

3,810 

3,820

3,750

5,590

3,690

3,810

3,810

3,790

3,990

4,140

4,180

*4,420

4,480

4,610

4,670

4,920

5,020

118,010

4,069

234,100

Mar.

4,950

4,810

4,840

4,880

5,250

5,270

5,420

5,120

5,000

4,820

4,930

4,660

4,070 

4,070

4,260

4,560

4,920

5,360

5,810

5,860

6,050

5,980

6,380

7,830

8,420

7,900

7,700

8,310

8,560

10,800

12,500

189,290

6,106

375,500

Apr.

13,000

15,100

12 800

11*400

9,940

9,990

9,870

8,870

7,240

5,390

*4,980

5,570

6,050 

5,590

5,440

4,130

3,340

2,800

2,030

1.460

5,040

7,000

6,430

8,050

9,480

11,000

11,200

9,770

9,550

9,990

230,500

7,683

457,200

May

9,890

9,040

8,960

8,770

8,830

8,990

8,310

5,590

5,320

5,440

5,810

5,930

6,620 

6,940

6,510

5,820

5,160

4,760

4,000

1,300

408 623"

775

573

650

2,640

8,100

*10,800

15,200

18,300

18, 700

208,759

6,734

414,100

June

18,200

18,000

18,100

18,200

17,500

17,700

17,500

17,200

16,500

13,600

10,800

11,200

11,200 

11,500

10,400

12,300

4,230

8,690

10,800

14,900

15,300

12,000

8,170

4,830

3,350

2,640

2,040

1,240

514

250

328,834

10,960

652,200

July

207

*207

226

418

340

216

240

246

205

207

202

207

202 

202

212

216

*218

238

226

205

202

200

502" 196

216

230

236

274

495

*27T 

243

7,405

239

14,690

Aug.

198

190

209

216

216

207

202

198

192

190

*256

288

285 

282

282

288

285

296

304

555

501

288

285

279

277

274

279

298

510

288 

285

8,081

261

16,050

Sept.

282

277

274

Ff4

279

282

295

285

274

277

282

501

324 

298

288

282

279

277

277

285

288

357

470 2~93

290

282

279

279

277

277

8,782

293

17,420

Calendar year 1955: Max 6,440 Mln 5 Mean 1,111 Ac-ft 804,000

Water year 1955-56: Max 18,700 Mln 132 Mean 3,391 Ac-ft 2,462,000

Discharge measurement made on this day.
70 DEVILS WASHBOWL SPRING BASIN

Devils Washbowl Spring near Klmberly, Idaho

Location. Lat 42°35' , long 114°21', In NE£ sec. 4, T. 10 S-, R. 18 E., 400 ft downstream from Devils Washbowl Spring, half a mile upstream from mouth which is half 

a mile upstream from Twin Falls of Snake River, and 85 miles north of Kimberly.

Records available . April 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,540 ft (from river-profile map). 

Prior to May 16, 1953, at datum 0.83 ft lower.

Average discharge. 6 years, 22.2 cfs (16,070 aore-ft per year).

Extremes.--1950-56: Maximum daily discharge, 27.5 cfs Oct. 3, 4, 1951; minimum daily, 

18.5 cfs May 15, 1950, Apr. 23-29, 1956.

Remarks. Records excellent. No regulation or diversion above station. Discharge affected by variable surface waste from irrigation over rimrocks into springs above 

station and occasionally by runoff from snowmelt. Waste was reported not flowing 

Oct. 1, Dec. 10, and estimated on June 14 (3 cfs); July 23 (1.5 cfs); Aug. 24 

(0.75 cfs). Flow at station is from principal outlet only. On Apr. 2, 1956, a discharge measurement of total spring flow of 23.1 cfs (adjusted for surface inflow) was 

made.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

1.1

1.2

Discharge, In cubic feet per second, water year October 1955 to S

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

*23.5

23

24

24

24

24

24.5

24.5

23

23

22.5

22.5

22

22

22

22

22

22

22

22

22

22

22

22

22

22

22

22

22.5

22.5

23

702.5

22.7

1,390

Nov.

23

22.5

22.5

23

22.5

*22.5

22.5

22.5

22

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

22.5

675.5

22.5

1,340

Dec.

22.5

22.5

22.5

22.5

22

22

22

22

22

*21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

22

21.5

21.5

21.5

21

21

20.5

3575"

20.5

669.5

21.6

1,330

Jan.

20.5

2575

20.5

20.5

20.5

20

20

20

20

20

20

*20

20

20

20.5

20.5

20

20

19.5

19.5

20

20

19

19

19

19.5

19.5

19.5

19.5

19.5

19.5

616.5

19.9

1,220

Feb.

19.5

1975

19.5

19.5

20

20

20

19.5

19.5

20

20

20.5

21

21

20.5

20.5

20.5

20.5

20.5

21

21

21

20.5

20.5

20.5

20.5

*20

20

20

587 .0

20.2

1,160

Mar.

20

20

20.5

20.5

20.5

20

20

20

20

19.5

19.5

19.5

20

19.5

19.5

19

TS

19

19

19

19

19

19

19

19

19

19

19

19

19

19.5

603.5

19.5

1,200

Apr.

19.5

1975

19

19

19

*19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

18.5

18.5

18.5

18.5

18.5

18.5

*18.5

19

567.5

18.9

1,130

May

19

19

19

19

19

19.5

19.5

19

19.5

19.5

19

19

19

19

19

19

19

19

19

19

19

19.5

20

*20.5

20.5

20.5

21.5

22.5

2175

20.5

20.5

608.5

19.6

1,210

June

21

21.5

21

20.5

20.5

21

21

20.5

20.5

20.5

20.5

21

21.5

*22

22.5

23

27

22.5

21.5

21

21

21.5

21.5

21

21

20.5

20

2CJ

20

20

633.0

21.1

1,260

2ptember 1956

July

19.5 25 

20.5

20.5

20.5

20.5

20

20.5

20.5

20.5

20.5

21

20.5

20.5

20.5

20.5

20.5

20

20

20

20.5

20.5

*21

20.5

21

21

21.5

23T5

21

20.5

21

637.0

20.5

1,260

Aug.

20.5

20.5

21

21

21

20.5

21

20.5

20.5

21

21

21.5

2T75

21.5

21.5

21.5

21.5

21.5

21.5

21

21.5

21.5

21.5

*21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

658.0

21.2

1,310

Sept.

21.5

2T75

22

22

22

22

22

22

21.5

21.5

21.5

22

22

22

22

22

22

22.5

23

24

24

24

24.5

2175

24.5

24

24.5

24.5

24.5

24.5

684.5

22.8

1,360

Calendar year 1955 .- Max 24.5 Mln 19 Mean 21.2 Ac-ft 15,320

water year 1955-56 : Max 24.5 Mln 18.5 Mean 20.9 Ac-ft 15,170

Discharge measurement made on this day.
SNAKE RIVER MAIN STEM 71

Snake River near Kimberly, Idaho

Location.--Lat 42°36' , long 114°22', in NWjj see. 4, T. 10 S., R. 18 E., on left bank

1,200 ft downstream from Twin Falls powerplant, 2-J- miles upstream from Shoshone Falls, 

and 4 miles north of Kimberly.

Records available.--July 1923 to September 1956.

Gage. Water-stage recorder. Datum of gage is 3,362.67 ft above mean sea level (levels 

Ey Idaho Power Co.). Prior to Aug. 31, 1938, at site 2,000 ft downstream at different 

datum.

Average discharge . 33 years (1923-56), 2,592 cfs (1,877,000 acre-ft per year).

Extremes.--Maximum discharge during year, 19,800 cfs May 31; maximum gage height, 

18.73 ft May 30; minimum discharge, 28 cfs Oct. 2 (gage height, 1.55 ft); minimum 

daily, 515 cfs Oct. 2.

1923-56: Maximum discharge, 27,200 cfs July 4, 1927 (gage height, 14.76 ft, site 

and datum then in use), from rating curve extended above 20,000 cfs; minimum recorded, 

10 cfs May 17, 1944 (gage height, 1.15 ft); minimum daily recorded, 139 cfs July 4, 

1941.

Remarks.--Records excellent. Flow regulated by Twin Falls powerplant and several reservoirs above station. Practically entire flow is diverted at Milner during irrigation 

season; no diversion between Milner and Kimberly.

Revisions (water years).--WSP 1347: 1924-26, 1928-30, 1942-44, 1946-48.

Rating tables, water year 1955-56 (gage height, In feet,

and discharge, in cubic feet per second) 

(Shifting-control method used May 30 to June 23)

4.5

5.0 

5.5 

6.0 

7.0 

8.0

445

580

740

9Z5

1,350

1,840

9.0

11.0

13.0

15.0

17.0

19.0

2,5ZO

4,500

7,170

10,700

15,000

20,100

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

*539

515

677

742

699

700

735

924

689

736

754

869

1,830

2.500 

1,890

2,120

1,990

1,520

1,170

1,100

1,090

824

664

712

710

714

714

877

1,080

1,410

1,400

32,894

1,061

65,240

Nov.

1,390 

1,350

1,350

1,310

1,270

*1,230

957

802

645

681

663

690

683

708

666

681

687

705

690

703

681

725

709

681

684

695

670

667

667

692

24,732

824

49,060

Dec.

678

684

618

681

676

651

664

654

799

800

810

828

*B28

913 

862

949

1,000

1,600

1,600

1,600

1,600

1,600

1,560

1,560

1,620

1,610

1,600

1,600

1,840

1,990

2 , 180

36,655

1,182

72,700

Jan.

2,220 

2, 340

2,500

2,480

2,480

2,570

2,740

2,730

2,730

2,670

2,850

*2,820

2,820

2,970

3,160

3,030

2,940

3,000

2,990

3,060

3,140

3,470

3,860

4,050

4,210

4,080

4,150

4,240

4,490

4,520

4,150

99,460

3,208

197,300

Feb.

4,050

4,140

4,210

4,380

4,450

4,490

4,400

4,330

4,330

4,310

4,300

4,270

4,180

4,190

4,190

4,020

4,040

4,190

4,210

4,210

4,340

4,560

4,570

4,750

4,860

4,920

*5,050

5,270

5.410

128,620

4,435

255,100

Mar.

5,390 

5,180

5,190

5,260

5,410

5,740

5,620

5,530

5,360

5,150

5,300

5,110

4,570

4,450 

4,580

4,850

5,180

5,530

6,100

6,050

6,360

6,270

6,450

8,040

8,780

8,310

8,040

8,700

8,870

10,800

12.500

198,470

6,402

393,700

Apr.

12,800 

15,000

12,766

11,600

10,200

* 10, 100

9,420

8,870

7,730

6,130

5,020

5,590

6,800

5,850 

5,630

4,670

3,670

3,270

2,720

2,060

3,840

7,260

6,540

7,930

9,300

10,900

*1 1,300

10,000

9,760

10,100

234,760

7,825

465,600

May

10,100 

9,340

9,020

9,070

8,960

9,160

8,860

6,140

5,480

5,630

5,910

6,150

6,550

7,450 

6,840

6,200

5,490

4,980

4,660

2,370

1,290

832

1,170"

*1,170

997

1,500

7,680

10,100

15,300

19,100

19.700

217,199

7,006

430,800

June

19,300 

*18,900

19 , 000

19,000

18,100

18,400

18,100

17,800

17,200

14,200

11,400

11,700

11,600

11,800 

*11,200

12,200

5,700

8,800

10,600

14,400

15,500

12,900

9,210

5,680

3,840

3,290

2,660

2,320

1,300

981

347,081

11,570

688,400

July

631 

551

694

680

833

747

660

632

699

651

564

676

621

581 

639

*636

645

643

681

673

661

651

641

639

638

660

688

700

801

977

20,909

674

41,470

Aug.

715 

660

643

681

668

662

659

659

629 675"

656

668

754

717 

745

736

738

753

762

760

796 776-

761

*73B

717

751

733

772

762

780

762

22,288

719

44,210

Sept.

764 

771

761

751

757

TBQ- 750

786

770

778

784

796

809

843 

809

804

815

759

793

788

803

788

1.100

1,070

822

770

767

792

BOO

*759

24,139

805

47,880

Calendar year 1955: Max 6,650 Mln 402 Mean 1,502 Ac-ft 1,088,000

Water year 1955-56: Max 19,700 Mln 515 Mean 3,790 Ac-ft 2,751,000

Discharge measurement made on this day.
72 BLUE LAKES SPRING BASIN

Blue Lakes Spring near Twin Falls, Idaho

Location.--Lat 42°37' , long 114°28' , in N^SE^ sec. 28, T. 9 S., R. 17 E., on left bank 

at outlet of upper Blue Lake, 1.4 miles northwest of Perrine Memorial Bridge and 

3j miles north of Twin Falls.

Records available. April 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,300 ft (from Snake River profile map).

Average discharge.--6 years, 231 cfs (167,200 acre-ft per year).

Extremes.--1950-56: Maximum daily discharge, 256 cfs Nov. 10, 11, 1951, Oct. 24 to 

 Nov. 13, 1952, Sept. 29, 30, 1953; minimum daily, 208 cfs June 5, 8-23, 25-28, 1950, 

May 16 to June 7, 1955, May 17, 18, 1956.

Remarks. Records excellent. No regulation or diversion above station.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

1.7

1.8

1.9

190

224

266

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

1Z

15

14

15

16

17

18

19

20

Zl

22

Z3

24

Z5

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

244

Z44

"548" 248

248

248

Z48

248

Z48

248

248

248

248

248

248

248

248

248

248

248

248

248

248

248

248

248

248

248

248

248 

Z48

7,680

248

15,230

Nov.

244

Z44

244

*244

244

244

244

Z44

244

244

244

244

244

244

240

244

244

244

244

240

236

232

23Z

232

232

232

228

228

228

228

7,180

Z39

14,240

Dec.

22~8 2Z8

228

Z28

228

228

Z28

*228

228

228

228

228

228

228

2Z8

2Z8

228

228

228

228

224

224

2Z4

2Z4

2Z4

224

224

224

224

224 

2Z4

7.0Z4

227

13,930

Jan.

ZZ4

220

220

220

220

220

220

220

220

220

220

*220

220

220

220

220

220

220

2T5" 216

216

216

216

216

216

Z16

216

216

216

216 

Z16

6,772

218

13,430

Feb.

216

225

225

220

220

220

220

220

Z16

216

216

216

216

216

220

220

220

220

220

220

220

*220

220

220

220

220

220

220

220

6,352

219

12,600

Mar.

220

225

220

220

220

220

220

220

220

216

216

216

216

216

216

220

220

220

220

220

220

220

220

220

220

220

220

220

220

220 

220

6,796

219

13,480

Apr.

220" 220

220

220

220

*220

220

220

220

220

220

220

220

220

220

220

220

212

212

212

212

212

212

212

212

212

212

212

*212

212

6,496

217

12,880

May

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

212

208

255

212

212

212

212

212

*212

212

212

212

212

212

212 

212

6,564

212

13,020

June

212

212

212

216

216

216

216

216

216

216

216

216

216

*216

216

216

216

216

216

216

216

216

216

216

216

216

216

216

220" 220

6,476

216

12,840

July

225" 220

220

220

220

220

224

224

224

224

224

224

224

228

228

228

228

228

228

228

228

228

*228

228

228

228

228

232

232

232 

232

7,008

226

13,900

Aug.

232

232

228

225

228

228

228

232

232

232

232

232

228

228

228

232

232

232

232

232

232

232

232

*232

232

232

232

232

232

232 

232

7,160

231

14, 200

Sept.

232

232

232

232

236

236

236

238

236

236

236

236

236

236

236

236

236

236

236

236

236

236

236

236

240

240

240

240

 240

240

7,088

236

14,060

Calendar year 1955: Max 248 Min 208 Mean 226 Ac-ft 163,500

Water year 1955-56: Max 248 Min 208 Mean 226 Ac-ft 163,800

* Discharge measurement made on this day.
ROCK CREEK BASIN 73

Rock Creek near Rock Creek, Idaho

Location. Lat 42°22', long 114°18', In sec. 25, T. 12 S., R. 18 E. , on right bank 

0.1 mile downstream from road bridge, three-quarters of a mile downstream from West 

Fork Rock Creek, 5 miles south of Rock Creek settlement, and 12 miles south of Hansen.

Drainage area. 80 sq mi, approximately.

Records available.--November-1909 to August 1913, November 1938 to July 1939, November 

1943 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,340 ft (by barometer). Nov. 28, 1909, 

TTo Aug. 16, 1913, staff gage at site 2 miles downstream at different datum. Nov. 23, 

1938, to July 21, 1939, staff gage at present site at datum 1.25 ft higher.

Average discharge. 14 years (1910-12, 1944-56), 35.3 cfs (25,560 acre-ft per year).

Extremes. Maximum discharge during year, 152 cfs Apr. 24 (gage height, 2.10 ft); minimum, 

4.7 cfs probably Nov. 15 (gage height, 0.53 ft).

1909-13, 1938-39, 1943-56: Maximum discharge observed, 429 cfs May 21, 1912 (gage 

height, 10.4 ft, site and datum then in use); minimum observed, 3.6 cfs Aug. 7-12, 1910 

(gage height, 0.3 ft, site and datum then in use).

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. Small ranch diversions above station.

Rating table, water year 1955-56, except periods of ice effect ( 

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

{Shifting-control method used Apr. 21-30, May 3-10)

0.5 

.6 

.8

1.0

4.5

8.3

20

33

1.3 

1.6 

2.0

58

97

165

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

7.3

7.3

6.9

«?79~

6.9

7.3

7.3

6.9

6.9

6.9

7.8

8.3

7.8

7.8

7.3

7.3

7.3

7.3

7.8

8.2

S72- 8.5

8.0

8.0

8.2

8.4

8.4

8.0

8.4

8.2

238.0

7.68

472

Nov.

8.0

8.O

8.5

8.6

«8.8

8.8

8.8

8.8

8.8

9.0

9.2

8.8

8.5

8.6

6.0

6.5

7.0

8.5

9.5

1O

10

9.5

9.0

9.0

9.0

10

10

11

11

11

268.2

8.94

532

Dec.

12

12

11

11

10

11

11

10

11

«11

11

11

11

8.8

STff

blO

blO

10

11

11

11

13

20

25

?3

22

23

19

17

17

19

421.6

13.6

836

Jan.

16

17

16

16

16

15

15

14

14

14

*14

14

15

16

32

59

4?

41

38

36

33

31

34

32

31

30

28

23

23

23

16

770

24.8

1,530

Feb.

16

b!5

b!4

20

20

2O

18

17

16

16

16

19

18

16

15

b!2

15

17

15

15

15

15

 15

14

14

14

14

14

14

459

15.8

910

Mar.

13

14

14

14

14

13" 12

14

14

14

12

12

15

13

12

14

15

16

22

27

32

36

42

51

67

73

67

61

56

53

52

884

28.5

1,750

Apr.

50

48

45

44

44

«42

41

IT

43

47

56

60

66

69

68

73

76

78

84

99

116

132

145

*147

138

135

138

135

123

113

2,496

83.2

4,950

May

1O8

1O8

111

TSo" 120

12O

118

111

111

111

111

1O2

94

86

79

77

77

81

 86

92

94

96

97

99

94

91

97

92

84

77

IP3,014

97.2

5,980

June

67

55

62

58

55

52

49

47

44

42

40

38

37

35

«37

38

34

32

30

30

30

27

26

25

23

23

22

21

20

5o

1,129

37.6

2,240

July

19

T9

19

18

17

16

16

15

14

13

13

12

12

11

11

11

11

11

10

9.9

10

10

*8.8

8.3

8.3

TVS' 7.8

8.8

10

9.3

8*3

375.3

12.1

744

Aug.

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.3

7.3

6.9

6.9

6.5

6.5

7.8

7.8

8.8

873

7.8

7.3

7.3

6.9

6.5

6.1

 675

6.9

7.8

8.3

7.3

6.9

6*9

229.0

7.39

454

Sept.

6.5

6.1

S75

7.3

7.8

7.3

6.9

6.9

6.9

7.8

10

-ff.8

7.8

7.3

7.3

7.3

6.9

6.9

6.9

7.3

7.3

7.3

7.8

7.8

7.8

7.8

7.8

8.8

8.8

8.3

226.0

7.53

448

Calendar year 1955: Max 152 Min 4.7 Mean 21.7 Ac-ft 15,690

Water year 1955-56: Max 147 Min 6.0 Mean 28.7 Ac-ft 2O,85O

Peak discharge (base. 130 efs). Apr. 24 (4 a.m.) 152 cfs (2.1O ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 2O to Nov. 4, Nov. 7 to Dec. 9, June 6j discharge estimated on 

jsis of recorded range in stage, weather records, and records for Salmon Falls Creek and other

ba'

nearby streams

467239 O-58 b
CEDAR DRAW BASIN

Cedar Draw near Filer, Idaho

Location. Lat 42°37'25", long 114°3-9'05." , In SW^-SW^ sec. 24, T. 9 S. , R 15 E. , on left 

bank just upstream from county road bridge, 2f. miles upstream from mouth and 4=r miles 

northwest of Filer.

Records available . July 1955 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,525 ft (from topographic map).

Extremes. Maximum discharge during year, 216 efs June 17, 18 -(gage height, 2.34 ft); minimum, 20 cfs Apr. 8 (gage height, 0.40 ft).

1955-56: Maximum discharge, that of June 17, 18, 1956; minimum, that of Apr. 8, 

1956.

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

Flow is principally waste and return flow from irrigation and stock water delivered 

to adjacent lands by Twin Falls Canal Co., and is affected by operation of laterals 

and canals upstream.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

0.4 1.3 

1.6 124

172

224

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

70

70

72

70

69

68

70

67

66

66

61

60

63

61

55

53

51

49

46

45_

45

51

52

56

57

54

51

51

48

50

50

1,797

58.0

3,560

Nov.

48

47

47

*47

46

45

43

42

42

46

44

44

44

44

41

41

414"

44

48

49

40

40

38

38

41

42

38

38

40

1,290

43.0

2,560

Dec.

41

39

38

36

35

38

47

*36

36

35

35

36

35

33

33

34

38

42

36

34

34

35

38

37

36

36

35

34

32

30

If

1,116

36.0

2,210

Jan.

30

30

30

32

32

32

32

30

2828"

*29

30

30

31

55

33

31

30

32

32

32

34

34

31

30

31

31

29

28

29

954

30.8

1,890

Feb.

28

27

27

27

27

27

27

27

27

27

27

36

25

28

28

}"

29

*E8

28

28

28

£7

27

£7

27

_ _____

797

27.5

1,580

Mar.

27

27

27

27

27

26

24

26

26

25

24

24

26

24

24

25

24

24

25

24

24

24

24

24

24

24

23

23

24

42

64

826

26.6

1,640

Apr.

65

65

52

*28

23

21

2T

21

25

27

75

138

105

70

104

121

no- 184

lle

132

131

117

100

109

79

41

39

55

158

*159

2,491

83.0

4,940

May

173

130

116

118

125

161

142

111

52

54

59

74

51

51

44

38

41

37

36

36

36

34

38

56

98

*72

80

137

150

127

63

2,540

81.9

5,040

June

90

90

92

93

75

59

56

56

55

62

66

*64

64

67

113

149

210

208

175

158

156

149

155

155

149

96

77

52

45

44

3,080

103

6,110

July

44

47

61

75

61

46

47

46

48

45

47

49

46

47

47

47

41

59

40

a 41

a 42

a 43

a44

a45

a46

*51

47

56

8L

57

56

1,553

49.5

3,040

Aug.

54

54

54

54

57

57

56

58

56

54

54

54

53

47

47

51

52

53

56

56

54

*54

55

54

56

56

59

59

60

60

62

1,706

55.0

3,380

Sept.

64

62

64

65

67

68

69

67

66

70

71

71

73

75

75

76

75

75

74

73

70

74

130

130

99

70

68

*70

*71

70

2,252

75.1

4,470

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 210 Min 21 Mean 55.7 Ac-ft 40,420

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of w 

records for adjacent periods, and records for nearby streams

rded range In stage,
SNAKE RIVER MAIN STEM 75 

Snake River near Buhl, Idaho

Location. Lat 42°40', long 114°43', In NW£ sec. 9, T. 95., R. 15 E., on left bank

2 miles downstream from Niagara Springs, 3j miles upstream from outlet of Clear Lakes, 

and 6 miles northeast of Buhl.

Records available. December 1946 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,952.9 ft above mean sea level, by 

stadia levels. Prior to Jan. 17, 1947, staff gage at same site and datum.

Average discharge. 9 years (1947-56), 5,137 cfs (3,719,000 acre-ft per year).

Extremes. Maximum discharge during year, 20,900 cfs May 30 (gage height, 9.63 ft); minimum, 2,300 cfs July 2 (gage height, 0.88 ft).

1946-56: Maximum discharge, 23,100 cfs June 13, 1947 (gage height, 10.34 ft); minimum observed, 1,900 cfs May 5, 1947 (gage height, 0.38 ft).

Remarks. Records excellent. Flow regulated by Twin Falls and Shoshone Falls powerplants 

and several reservoirs above station. No diversion except by small ranch ditches between this station and station at Milner, where practically entire flow is diverted 

during irrigation season.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, in cubic feet per second)

0.9 

1.2

2.0 

3.0

2,320

2,580

3,450

4,750

6.0 

8.0

10.0

6,450

10,900

16,100

22,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2,680 

2,670

2,690

2,820

2,940

2,790

2,760

2,920

2,940

2,750

2,820

2,790

3,160

4,380

4,070

4,020

4,020

3,570

3,180

2,960

2,930

2,930

2,750

2,650

2,710

2,690

2,690

2,730

2,800

3,180

3,340

94,330

3,043

187,100

Nov.

3,500 

3,270

*3,270

3,240

3,190

3,130

3,060

2,770

2,650

2,580

2,560

2,550

2 , 540

2 , 550

2 , 500

2 , 500

2 , 480

2*550

2 , 560

2,560

2,510

2 , 510

2,510

2,490

2 , 480

2 , 510

2,470

2 , 470

2,490

80,770

2,692

160,200

Dec.

,500 

,480

,450

,440

,390

,440

* ,440

,580

,420

,510

,460

,520

,520

,510

,510

,580

,690

3,020

3,300

3,280

3,270

3,350

3,330

3,260

3,320

3,300

3,280

3,240

3,430

3,530

5,820

88,970

2,870

176,500

Jan.

5,860 

5,910

4,120

,140

,160

,170

,540

,340

,300

* ,290

,410

,460

,430

,520

,860

,770

,560

,600

,600

,640

,720

,960

,440

,640

,690

,760

,620

,790

,900

,120

,810

148,930

4,804

295,400

Feb.

5,520 

5,600

5,690

5,830

5,950

5,990

5,940

5,850

5,810

5,770

5,790

5,880

5,740

5,650

5,620

5,500

5,420

5,580

5,650

5,650

5,690

5,950

6,010

6,060

6,280

6,280

*6,450

6,560

6,790

-

------

170,500

5,879

338,200

Mar.

6,750 

6,620

6,620

6,660

6,600

7,210

6,830

7,070

6,700

6,530

6,510

6,450

6,060

5,650

5,770

6,040

6,340

6,720

7,210

7,310

7,630

7,590

7,570

9,010

10,000

9,820

9 , 400

9,930

10,100

11,500

15,500

237,700

7,668

471,500

Apr.

14,100 

14,400

*14,100

13,200

11,800

11,400

11,000

10,200

9,650

7,910

6,300

6,930

8,250

7,480

7,250

6,830

5,450

5,090

4,470

4,000

4,210

8,660

8,460

8,940

10,700

11,900

12,900

11,900

11,600

11,800

- -----

280,880

9,363

557,100

May

*11,900 

11,300

10,700

11,000

10,600

11,000

10,900

8,720

7,070

7,440

7,540

7,980

8,070

9,330

8,620

8,050

7,250

6,740

6,580

4,750

3,450

2,800

2,580

3,000

3,020

2,850

7,120

*11,800

16,000

20,000

20,800

268,960

8,676

533,500

 yjune

20, 60O

20! 100

20,400

19,400

19,600

19,400

19,000

18,600

16,200

13,200

*12,900

13,100

13,300

13,000

13,100

9,490

9,470

11,900

15,100

17,100

15,500

11,900

8,410

6,120

5,180

4,600

4,260

3,520

2,940

------

397,390

13,250

788,200

July

2,700 

2,440

2,400

2"7?40

2,500

2,550

2,500

2,420

2,440

2,450

2,440

2,430

2,460

2,410

2,400

2,430

2,410

2,440

2,400

2,450

2,460

2,480

2,470

2,470

*2,510

2,540

2 , 590

2,620

2,730

2 , 860

2,860

77,700

2,506

154,100

Aug.

2,740 

2,730

,730

,700

,710

,720

,680

,680

,640

,620

,630

,630

,660

,680

,630

,690

,680

,690

,660

,700

* ,730

,700

,680

,680

,690

,700

,760

,790

,810

,820

,840

8 ,800

,703

166,200

Sept.

2,850

2^880

2,860

2,850

2,890

2,900

2,980

2,960

2,980

3,060

3,080

3,060

3,060

3,070

3,070

3,070

3,030

3,020

2,960

2,940

2,980

3,180

5,410

3,140

3,000

*2,960

2,960

3,020

3,010

------

90,090

3,003

178,700

Calendar year 1955: Max 8,160 Mln 2,340 Mean 3,270 Ac-ft E, 367, 000

Water year 1955-56: Max 20,800 Mln 2,330 Mean 5,519 Ac-ft 4,007,000

Discharge mea ment made on this day.
76 DEEP CREEK BASIN

Deep Creek near Buhl, Idaho

Location. Lat 42°37'05", long 114°50'40", In SE^MW^ sec. 29, T. 9 S. , R. 14 E., on 

right bank 0.2 mile downstream from Twin Falls Canal Co. diversion dam, a quarter of 

a mile upstream from U.S. Highway 30, 4| miles northwest of Buhl, and 5 miles upstream from mouth.

Records available. July 1955 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,500 ft (by barometer).

Extremes. Maximum discharge during year, 363 cfs Nov. 27 (gage height, 2.90 ft); minimum daily, 1.3 cfs Apr. 4-6.

1955-56: Maximum discharge, that of Nov. 27, 1955; minimum daily, that of 

Apr. 4-6, 1956.

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

which are poor. Flow is waste from irrigation and stock water delivered to adjacent 

lands by Twin Falls Canal Co. and is completely controlled by gates 0.2 mile upstream.

Rating tables, water year 1955-56, except periods of lee effect (gage

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

(Shifting-control method used Feb. 5-11)

Oct. 1 to Feb. 20 Feb. 21 to Sept. 30

1.5

4.0

12

33

1.0 

1.4 

1.8 

2.6

120

179

311

-0.3

-.2

-.1 

0 

.3

0.8

2.5

5.1

8.5

22

0.6 

1.0 

1.5 

2.3

41

81

150

288

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

146

130

105

62

60

96

127

103

92

86

82

83

102

95

27

3.8

2.0

1.5

175

2.2

2.5

100

237

277

267

174 

182

200

166

155

170

3,337.5

108

6,620

Nov.

176

205

*214

198

189

198

198

203

201

187

116

124

134

158

120

83

149

233

272

506

299

287

b250

258

279

301 

299

257

245

252

6,391

213

12,680

Dec.

255

241

233

277

224

160

b230

*216

189

272

268

274

270

219

144

158

294

304

292

286

277

291

268

263

268

260 

258

248

246

224

252

7,661

247

15,200

Jan.

277

b290

250

277

270

265

260

255

*255

274

280

268

275

275

291

272

250

235

237

262

284

302

311

292

258

201 

201

b230

b230

b220

b210

8,057

260

15,980

Feb.

b200

b!90

b220

b260

282

280

275

267

262

257

268

a295

a300

a280

a250

a200

al80

a200

a230

a260

*273

278

271

269

280

248 

273

275

269

7,392

255

14,660

Mar.

269

286

286

248

239

232

146

164

167

146

110

93

118

95

94

94

88

86

86

76

70

68

64

54

49

61 

82

79

110

99

47

3,906

126

7,750

Apr.

46

43

a6.2

*al.3

aT73

al.3

a9.3

16

20

81

212

168

77

7.0

37

256

141

40

79

123

43

23

74

36

27

48 

30

44

56

*68

1,814.4

60.5

3,600

May

56

27

29

31

32

25

29

24

51

81

113

94

74

66

40

22

45

51

35

29

26

18

17

77

58

 61 

93

135

129

95

128

1,791

57.8

3,550

June

111

99

86

85

65

67

57

55

50

59

79

*88

90

90

110

159

147

127

98

108

131

107

95

75

68

53 

60

56

41

31

2,553

85.1

5,060

July

46

46

43

43

44

36

32

16

16

IS.

14

20

21

19

29

31

28

26

25

26

26

36

27

21

21

*26 

33

33

47

To" 50 

48

941

30.4

1,870

Aug.

58

64

67

69

70

67

49

48

35

31

35

31

32

20

23

24

26

29

27

32

34

*28

24

22

24

25 

35

46

47

38

38

1,200

38.7

2,380

Sept.

55

49

6l

71

69

67

69

81

77

89

108

106

100

107

127

124

138

153

176

189

165

160

165

187

194

153 

*135

144

160

167

3,646

122

7,230

Calendar year 1955: Max - Kin - Mean - Ac-ft -

Water year 1955-56: Max 311 Min 1.3 Mean 133 Ac-ft 96,580

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of one discharge measurement, recorded range 

in stage, and records for nearby streams, 

b Stage-discharge relation affected by ice.
BOX CANYON SPRINGS BASIN 77 

Box Canyon Springs near Wendell, Idaho

Location Lat 42°42'30", long 114°48'45", in M£ sec. 28, T. 8 S., R. 14 E., on left 

bank 150 ft downstream from waterfall, half a mile upstream from mouth, threequarters of a mile downstream from source, and ?| miles southwest of Wendell.

Records available. April 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 2,950 ft (from topographic map).

Average discharge. 6 years, 421 cfs (304,800 acre-ft per year).

Extremes. 1950-56: Maximum daily discharge, 480 cfs Sept. 29, 1950; minimum daily 

 372 cfs Apr. 12, 1951, Mar. 23-27, 1956.

Remarks. Records excellent. No regulation or surface diversion above station. Discharge affected by variable surface waste from irrigation canals over rlmrocks into 

springs above station. This waste was reported not flowing Jan. 11, Feb. 21, Apr. 3, 

and estimated on May 1 (2 cfs), May 27 (1 cfs), June 18 (1.5 cfs), July 26 (2 cfs), 

Aug. 22 (1 cfs), Sept. 26 (3 cfs).

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

1.4

1.5 

1.7 

1.9

352

377

427

480

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

453

453

453

453

453

453

453

453

453

456

453

450

450

450

450

448

448

448

448

448

448

445

443

443

443

445

445

443

443

445

445

13,914

449

27,600

Nov.

443

440

*440

443

440

440

437

435

437

440

440

437

443

453

443

435

435

435

432

432

432

430

430

430

430

427

427

424

424

424

13,058

435

25,900

Dec.

424

424

422

420

420

*420

417

417

414

412

412

412

412

410

410

410

410

410

407

404

404

407

410

410

410

410

410

410

407

407

407

12,779

412

25,350

Jan.

407

407

404

407

404

404

404

404

402

402

*402

402

402

402

402

402

402

400

400

400

400

400

400

400

400

400

400

397

397

397

394

12,444

401

24,680

Feb.

394

394

394

394

394

394

394

392

392

394

394

394

394

392

392

392

394

392

394

394

*394

394

394

394

394

394

392

390

390

11,404

393

22,620

Mar.

390

390

387

387

384

382

382

382

382

382

382

382

384

384

384

382

382

380

380

380

377

374

372

37?

372

372

372

374

377

377

380

11,787

380

23,380

Apr.

380

380

*380

380

377

374

374

374

374

377

377

374

374

374

374

374

377

377

374

374

377

377

377

380

380

382

382

382

382

382

11,320

377

22,450

May

*38Q

382

382

384

384

384

390

390

390

392

394

397

394

397

397

397

397

400

402

402

402

404

404

404

404

404

*410

412

412

412

412

12,315

397

24,430

June

414.

414

417

420

420

420

422

422

422

424

422

422

424

427

430

430

430

*432

432

432

432

432

435

437

43T

437

435

437

437

435

12,830

428

25,450

July

457

437

440

437

437

437

437

437

437

437

440

440

440

440

440

437

440

440

440

443

443

443

443

443

*445

445

445

445

445

448

13,655

440

27,080

Aug.

445

448

448

445

445

445

443

443

440

437

440

440

437

437

437

435

435

435

432

432

435

*435

435

435

437

440

440

440

440

440

440

13,616

439

27,010

Sept.

440 440"

440

440

440

440

443

443

443

445

445

448

448

450

450

450

450

450

453

456

453

453

453

456

456

 458

458

458

458

458

13,475

449

26,730

Calendar year 1955 : Max 456 Mln 384 Mean 416 Ac-ft 300,900

Water year 1955-56 : Max 458 Mln 372 Mean 417 Ac-ft 302,700

Discharge measurement made on this day.
78 SALMON PALLS CREEK BASIN

Salmon Palls Creek above upper Vineyard ditch, near Contact, Nev.

Location. Lat 41°44', long 114"53', near northwest corner sec. 5, T. 44 N., R. 63 E., 

on left bank three-quarters of a mile upstream from former diversion point for upper 

Vineyard ditch, l£ miles upstream from present diversion dam, and 6 miles southwest 

of Contact.

Drainage area. 439 sq mi, approximately.

Records available.--May 1914 to July 1915, October 1948 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,570 ft (by barometer). May 17, 1914, 

to July 25, 1915, at site three-quarters of a mile downstream at different datum.

Average discharge.--8 years (1948-56), 93.1 cfs (67,400 acre-ft per year).

Extremes.--Maximum discharge during year, 872 cfs May 25 (gage height, 4.32 ft); minimum, 16 cfs Sept. 3 (gage height, 1.17 ft), but may have been less during period of 

ice effect.

1914-15, 1948-56: Maximum discharge, 1,170 cfs May 4, 1952 (gage height, 4.82 ft); 

minimum, 6.8 cfs Dec. 26, 1954 (gage height, 0.93 ft).

Remarks. Records excellent except those below about 20 cfs, which are good, and those 

for periods of ice effect, which are fair. Many diversions above and below station 

for irrigation.

Rating table, water year 1955-56, except periods of Ice effect (gage 

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

1.7 

Z.I

13

18

31

58

109

2.5 

3.0 

3.5 

4.3

192

325

500

860

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

21

*21

21

21

21

21

21

21

21

21

21

21

21

22

22

22

22

22

22

23

25

26

25

24

24

25

26

26

25

26

25

705

22.7

1,400

Nov.

25

24

24

26

*26

26

26

26

26

27

28

28

26

b27

bj.8

b20

b22

b26

29

3_1

31

29

26

26

26

27

29

30

30

30

795

26.5

1,580

Dec.

32

31

29

29

b25

29

29

b26

29

29

29

29

30

29

29

29

30

30

*30

30

30

36

66

82

80

64

68

48

44

39

41

1,181

38.1

2,340

Jan.

38

39

37

38

40

41

36

36

32

*34

36

38

40

40

55

75

77

64

68

66

62

58

58

49

46

48

51

44

40

b38

b35

1,459

47.1

2,890

Feb.

b32

b30 b3"2

b34

b35

b35

b36

35

33

35

37

38

39

40

38

b32

b33

34

32

34

36

38

38

37

35

35

35

35

36

------

1,019

35.1

2,020

Mar.

36

41

68

91

79

*50

42

45

59

82

53

43

44

43

43

48

132

211

203

165

141

127

141

185

231

228

192

160

158

149

154

3,444

111

6,830

Apr.

149

127

122

127

*129

122

127

127

137

158

202

221

214

211

206

214

241

238

251

307

380

446

504

*544

520

488

468

468

422

386

8,256

275

16,380

May

355

337

346

372

414

432

439

390

390

40O

358

322

298

267

241

238

262

304

*372

442

520

564

572

724

840

715

661

594

508

436

422

13,535

437

26,850

June

439

428

408

390

355

331

284

249

238

231

224

2O 6

*190

180

211

224

176

149

122

122

151

120

103

97

90

81

75

70

66

59.

6,069

202

12,040

July

56

54

54

52

49

45

45

43

41

37

32

32

29

29

29

"29

27

26

25

24

24

24

22

*22

24

24

25

26

37

30 

27

1,043

33.6

2,070

Aug.

26

23

22

22

21

21

21

22

24

23

22

20

19

19

22

21

21

19

19

20

19

19

*18

18

11

18

19

20

19

19 

18

631

20.4

1,250

Sept.

18

17

IT

17

17

17

17

18

17

18

21

20

19

18

18

18

18

18

18

19

19

19

20

21

20

21

21

21

21

21

564

18.8

1,120

Calendar year 1955: Max 302 Mln 16 Mean 49.6 A.e-ft 35,890

Water year 1955-56: Max 840 Mln 17 Mean 106 Ac-ft 76,770

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice
SALMON FALLS CREEK BASIN 79

Salmon Falls Creek near San Jacinto, Nev.

Locatlon.~Lat 41°57', long 114°42', in sec. 23, T. 47 N., R. 64 E., on right bank in 

canyon, 600 ft downstream from highway bridge on U. S. Highway 93, 750 ft downstream 

from Shoshone Creek, and 5 miles north of San Jacinto.

Drainage area. 1,450 sq mi, approximately.

Records available. September 1909 to September 1916, October 1918 to September 1956. 

Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 5,120 ft (by barometer). Prior to 

June 30, 1910, staff gage at nearby site at different datura.

Average discharge. 44 years (1910-16, 1918-56), 133 cfs (96,290 acre-ft per year).

Extremes. Maximum discharge during year, 859 cfs May 26 (gage height, 7.32 ft); minimum, 4.7 cfs Aug. 24; minimum gage height, 3.26 ft Dec. 5.

1909-16, 1918-56: Maximum discharge, between 2,060 and 2,420 cfs Feb. 24, 1943 

(gage height exceeded range of recorder, 10.20 ft, but was not more than 1.2 ft 

higher), from rating curve extended above 1,400 cfs; minimum, 2.8 cfs Nov. 13, 1947, 

during channel improvement work upstream.

Remarks. Records good. Many diversions above station for irrigation. Salmon Dam of 

Salmon River Canal Co., 15 miles below station, forms a reservoir having a capacity 

of 182,650 acre-ft (see following page).

Rating table, water year 1955-56 (gage height, In feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Apr. 29 to Sept. 30)

3.1 

3.3 

3.6

4.0

22

52

113

4.5 

5.0 

6.0

7.0

212

322

573

837

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

I

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

35

35

*35

37

36

36

36

37

35

35

35

35

36

36

37

36

36

36

37

38

40

40

41

40

40

40

42

42

41

40

41

1,166

37.6

2,310

Nov.

41

41

41

41

*43

44

43

43

43

44

45

43

39

41

24

26

35

46

57

62.

58

52

49

48

46

49

50

53

52

52

1,351

45.0

2,680

Dec.

55

56

51

49

KL

42

49

35

*51

50

55

61

58

57

56

55

57

57

57

56

58

62

85

121

146

150

148

124

104

92

93

2,217

71.5

4,400

Jan.

87

85

76

82

82

81

79

73

65

 71,

71

73

78

81

92

168

212

222

204

184

166

154

150

128

117

121

119

95

89

79

69

3,453

111

6,850

Feb.

69

60

71

76

79

81

81

82

71

73

89

90

92

90

78

61

68

76

68

84

82

84

*84

82

79

76

75

75

75

2,251

77.6

4,460

Mar.

75

75

89

126

144

109

78

84

95

126

111

84

84

75

76

76

138

237

332

288

252

254

276

344

442

503 498"

415

368

356

351

6,561

212

13,010

Apr.

339

310

281

269

*267

272

254

261

263

272

308

368

392

402

410

395

402

415

402

425

475

- 529

*607

669

708

687

674

685

661

604

13,006

434

25,800

May

537

472

450

445

468

513

544

526

492

495

495

468

438

408

370

341

315

*329

363

402

478

550

583

604

745

*837

775

756

700

617

529

16,045

518

31,820

June

503

503

480

450

425

398

360

308

272

258

244

229

*218

212

208

254

235

198

166

148

158

158

138

128

115

106

95

84

76

68_

7,195

240

14,270

July

58

53

55

57

58

53

49

45

44

41

41

38

37

35

35

34

35

3-5

34

32

31

32

30

*29

29

30

30

30

33

39

37

1,219

39.3

2,420

Aug.

35

31

30

28

26

23

19

18

16

16

16

14

13

12

11

12

13

14

11

9.5

9.5

9.5

*7.1

5.5

575

6.3

7.9

9.5

8.7

7.9

7.9

452.8

14.6

898

Sept.

8.7

7.1

7.9

6.3

11

20

22

23

23

24

31

34

3T

29

28

27

27

27

27

27

29

29

31

31

32

32

32

33

34

34

758.0

25.3

1,500

Calendar year 1955: Max 355 Min n Mean 78.1 Ac-ft 56,560

Water year 1955-56: Max 837 Min 5.5 Mean 152 Ac-ft 110,400

Discharge measurement made on this day.
80 SAIMON FALLS CREEK BASIN

Salmon River Canal Co. reservoir near Rogerson, Idaho

Location. La t 42°13', long 114°44', in NE^ sec. 18, T. 14 S., R. 15 E., at dam on 

Salmon Falls Creek, 7-^ miles west of Rogerson.

Drainage area. 1,610 sq mi, approximately. 

Records available. January 1922 to September 1956.

Gage. Wire-weight gage read once daily. Datum of gage is 4,945.8 ft (revised) above 

mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Jan. 5, 

1955, staff gage at same datum.

Extremes.--Maximum contents observed during year, 62,300 acre-ft June 5, 6, 7 (gage 

height, 36.55 ft); minimum observed, 3,720 acre-ft Oct. 7 (gage height, 2.90 ft).

1922-56: Maximum contents observed, 123,700 acre-ft May 30, 31, 1922 (gage height, 

61.1 ft); minimum observed, 125 acre-ft Sept. 21 to Oct. 5, 1934 (gage height, 0.1 ft).

Remarks. Reservoir is formed by gravity-section concrete-arch dam completed in 1911; 

sTorage began in 1910. Capacity, 182,650 acre-ft between gage heights 0.0 (bottom of 

outlet tunnel) and 80.0 ft (maximum operating level). Dead storage unknown. Water is 

used for irrigation of lands in Salmon River Canal Co. project. Figures given herein 

represent usable contents.

Cooperation. Gage readings and capacity table furnished by Salmon River Canal Co.

Capacity table, water year 1955-56 (gage height, In feet, 

and contents, In acre-feet)

2.0

5.0

10.0

15.0

20.0

2,500

6,550

13,800

21,500

30,000

25.0

30.0

35.0

40.0

39,100

48,800

58,950

69,850

Usable contents, In acre-feet, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

M(*)

Oct.

4,430 

4,460

4,480

4,390

4,050

3,780

5.720 

3,780

3,780

3,780

3,810

3,850

3,890

3,930

3,970

4,010

4,070

4,120

4,170

4,230

4,270

4,320

4,360

4,400

4,440

4,500

4,520

4., 560

4,630

4,670

4,710

3.64

+310

Nov.

4.770 

4,820

4,880

4,920

4,960

5,010

5,060 

5,120

5,170

5,740

5,290

5,360

5,440

5,480

5,540

5,540

5,550

5,560

5", 600

5,670

5,740

5,810

5,940

6,010

6,080

6,140

6,250

6,350

6,460

6.550

5.00

+1,840

Dec.

6.650 

6,720

6,800

6,870

6,950

7,040

7,140 

7,210

7,280

7,360

7,400

7,460

7,530

7,600

7,680

7,750

7,860

8,010

8,130

8,230

8,330

8,440

8,560

8,680

8,810

9,100

9,320

9,600

9,850

10,070

10,260

7.55

+3,710

Jan.

10.430 

10,620

10,790

10,940

11,080

11, 200

11,340 

11,490

11,610

11,720

11,840

11,950

12,070

12,220

12,380

12,570

12,760

13,050

13,360

13,800

14,250

14,580

14,920

15,220

15,450

15,700

15,900

16,120

16,350

16,470

16,580

11.85

+6,320

Feb.

16.680 

16,770

16,840

16,920

17,010

17,100

17,280 

17,400

17,520

17,640

17,730

17,850

18,000

18,180

18,330

18,460

18,590

18,670

18,750

18,830

18,910

19,000

19,180

19,420

19,580

19,680

19,770

19 , 900

20,000

_______

14.06

+3,420

Mar.

20.140 

20,280

20,380

20,480

20,700

20,890

21,150 

21,340

21,530

21,700

21,870

22,030

22,210

22,420

22,590

22,740

22,840

23,030

23,460

24,050

24,610

25,070

25,530

26,000

26,460

27,280

27,990

29,060

29,830

30,510

31,190

20.70

+11,190

Apr.

31,790 

32,350

33,000

33,490

34,010

34,480

34,940 

35,400

35,960

36,420

36,880

37,470

38,080

38,770

39,500

40,200

40,900

41 , 600

42,300

43,000

43,800

44,600

45,600

46,600

47,800

48,900

50,200

51,400

52,500

53.600

32.40

+22,410

May

54.600 

55,500

56,200

57,000

57,800

58,600

59,100 

59,300

59,600

59,800

60,000

60,100

60, 200

60, 100

60,100

60,000

59 , 800

59,500

59 , 300

59 , 000

58,800

58,700

58,600

58,600

58,600

58 , 800

59,500

59 , 900

60,600

61,100

61,400

36.15

+7 , 800

June

61,600 

61,800

62,000

62,200

62.300

62,300

62,300 

62,100

61 , 600

61 , 200

60 , 500

59 , 800

59,200

58,500

57,700

56,900

56,400

55,900

55,600

55,100

54,700

54,200

53,700

53,200

52,600

52,000

51,200

50,400

49 , 400

48.500

29.85

-12,900

July

48,100 

48,100

48,100

48,100

47,500

46,500

45,600 

44,700

43,700

42,200

41,500

40,700

39,500

38,400

37,300

36,300

35,300

34,300

33,400

32,400

31,500

30,800

29,800

29,200

28,400

27,600

26,900

26,100

25,400

24,700

24,000

16.50

-24,500

Aug.

25.500 

22,900

22,400

21,800

21,300

20,700

20,100 

19,400

18,900

18,200

17,800

17,200

16,600

16,000

15,300

14,700

14,000

13,400

12,600

11,900

11,100

10,500

9,780

9,750

9,750

9,680

9,600

9,530

8,880

8,080

7,280

5.50

-16,720

Sept.

6,480 

6,420

6,350

6,350

6,280

6,280

6,210 

6, 216

6,280

6,280

6,350

6,420

6,420

6,480

6,480

6,480

6,480

6,480

6,480

6,550

6,550

6,550

6,550

6,550

6,550

6,550

6,620

6,620

6,B20

6,620

5.05

-660

Calendar year 1955.................... * +3,980

Water year 1955-56.................... * +2,220

t Qage height, in feet, at end of month. 

* Change In contents, in acre-feet.
SALMON FALLS CREEK BASIN 81

Salmon River Canal Co. canal near Rogerson, Idaho

Location. Lat 42°15', long 114°45' , In sec. 7, T. 14 S., R. 15 E. , on left bank half a 

mile downstream from Salmon River Canal Co. reservoir and 7 miles west or Rogerson.

Records available.--April 1937 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 4,940 ft (by barometer). Oct. 1, 1953, 

To Sept. 30, 1954, staff gage at same site and datum.

Extremes.--1937-56: Maximum dally discharge, 660 cfs July 21-24, 1944; no flow during 

long periods in each year.

Remarks. Records excellent. Canal diverts from Salmon River Canal Co. reservoir for 

Irrigation of land in Salmon River Canal Co. project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

*0

*155

T5o

29

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

314

10.1

623

Nov.

/

(*)

0

0

0

Dec.

(*)

0

0

0

Jan.

(»)

0

0

0

Feb.

(*)

_ -----

0

0

0

Mar.

0

0

0

Apr.

(")

(")

0

0

0

May

0

0

0

0

0

190

314

324

357

341

359

383

376

372

366

370

370

*390

407

424

456

485

504

509

511

491

445

427

404

398

359

10,332

333

20,490

June

332

301 308"

306

321

375

411

451

465

506

518

529

519

»511

502

476

445

400

388

369

361

363

381

383

400

449

470

506

505

357

12,608

420

25,010

July

0

0

0

154

502

492

482

507

518

545

531

530

530

515

507

498

488

471

464

440

438

404

404

*399

389

387

387

384

369

325

298

12,356

399

24,510

Aug.

265

269

277

280

293

295

301

298

285

280

286

290

304

306

323

318

320

337

391

405

420

331

*0

0

0

0

7.7

225

400

379

342

8,227.7

265

16,320

Sept.

160

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

160

5.33

317

Calendar year 1955 : Max 473 Mln o Mean 51.8 Ac-ft 37,520

Water year 1955-56 : Max 543 Mln 0 Mean 120 Ac-ft 87,270

Discharge measurement or observation of no flow made on this day.
82 SALMON FALLS CREEK BASIN

Salmon Falls Creek near Buhl, Idaho

Location. Lat 42 C 36', long 114 0 53', in SW-jj sec. 36, T. 9 3. , R. 13 E. , 5 miles northeast 

of Balanced Rock and Castleford Crossing, 6 miles west of Buhl, and 9 miles upstream 

from mouth.

Records available. July 1955 to September 1956.

Gage . Water-stage recorder. Altitude of gage is 3,230 ft (by barometer).

Extremes.--Maximum discharge during year, 193 cfs May 14 (gage height, 2.33 ft); minimum, 

56 cfs Mar. 7 (gage height, 1.48 ft).

1955-56: Maximum, that of May 14, 1956; minimum, that of Mar. 7, 1956.

Remarks.--Records good. Only leakage passes Salmon River Canal Co. Dam, where flow is 

diverted for irrigation. Flow at station is derived from seepage past dam, underground flow from adjacent irrigated land, and surface waste over rim of canyon.

Rating table, water year 1955-56 (gage height, In feet,

and discharge, in cubic feet per second)

(Shifting-control method used Oct. 24 to Nov. 15,

Dec. 31 to Feb. 26, Sept. 15-30)

1.5 

1.7 

2.0 

2.3

65

131

185

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

141

138

129

123

128

131

136

131

128

125

120

118

121

123

114

108

102

96

95

95

96

95

97

128

123

121

118

121

120

121 

121

3,663

118

7,270

Nov.

117

114

117

*117

114

114

112

110

110

112

112

112

103

102

91

90

88

90

92

104

104

100

97

95

96

104

112

106

112

118

3,165

106

6,280

Dec.

118

112

108

106

97

99

*95

96

102

100

102

106

106

99

97

97

95

109

108

108

109

112

109

110

108

106

106

103

97

95

£4

3,209

104

6,360

Jan.

92

99

95

97

103

103

103

100

92

96

*104

99

100

103

110

104

102

100

100

102

103

103

104

99

91

94

91

87

85

83 

80

3,024

97.5

6,000

Feb.

82

81

82

86

87

87

88

90

87

86

86

90

94

90

87

85

85

83

81

83

*94

90

92

87

85

86

86

85

91

------

2,516

86.8

4,990

Mar.

88

92

108

106

96

90

82

35

92

88

86

86

87

88

88

90

91

91

91

99

131

145

141

134

128

118

114

106

99

97

95

3,132

101

6,210

Apr.

97

100

99

*95

87

83

85

85

85

109

129

128

125

114

92

108

121

126

134

134

118

118

120

123

123

123

126

136

138

*140

3,401

113

6,750

May

128

129

133

140

134

131

131

140

145

152

155

162

161

159

140

134

134

129

110

114

102

99

99

117

120

133

*143

166

166

159 

157

4,222

136

8,370

June

140

128

133

131

136

140

138

120

114

115

126

133

*140

141

143

146

136

126

125

134

113

128

123

117

110

97

88

75

77

80

3,673

122

7,290

July

83

88

85

85

85

82

81

79

79

80

75

73

80

85

82

75

81

79

80

77

80

82

86

75

*80

77

83

82

99

108 

106

2,572

83.0

5,100

Aug.

103

97

103

109

104

112

117

104

108

103

92

82

86

85

85

88

94

96

91

88

82

*82

88

91

94

90

90

97

97

100 

103

2,961

95.5

5,870

Sept.

102

97

95

99

103

112

112

108

10Z

99

91

90

91

92

87

87

86

90

91

91

94

114

114

106

106

117

121

*1Z8 T28~

128

3,081

103

6,110

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 166 Mln 73 Mean 166 Ac-ft 76,600

Discharge measurement made on this day.
MUD LAKE-LOST RIVER BASINS 83

Camas Creek at Camas, Idaho

Location. Lat 44°00' , long 112 = 13', in E?SE^ sec. 21, T. 8 N., R. 36 E., on left bank 

ibO ft upstream from Oregon Short Line Railroad bridge at Camas and half a mile 

upstream from Beaver Creek.

Drainage area. 320 sq mi, approximately. 

Records available.--April 1925 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,780 ft (by barometer). Prior to 

Tug. 21, 1925, staff gage at site 0.1 mile downstream at different datum. Aug. 21, 

1925, to Mar. 25, 1927, staff gage, and Mar. 26, 1927, to Sept. 14, 1938, water-stage 

recorder, at site 250 ft upstream at datum 2.01 ft higher.

Average discharge.--30 years (1926-56), 27.7 cfs (20,050 acre-ft per year).

Extremes. Maximum discharge during year, 534 cfs Apr. 19 (gage height, 4.99 ft), but 

may have been higher during period of ice effect; maximum gage height observed, 

5.26 ft Dec. 24 (ice Jam); no flow for long period.

1925-56: Maximum discharge, 1,220 cfs May 2 or 3, 1952 (gage height, 6.53 ft), 

from rating curve extended above 510 cfs by logarithmic plotting; no flow during periods in many years.

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

which are poor. Diversions above and below station for irrigation and stock water.

Cooperation. Water-stage recorder inspected by employees of Water District No. 66. 

Revisions (water years).--WSP 813: 1935. WSP 1123: 1947.

Rating table, water year 1955-56, except periods of ioe effect (gage 

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

3.3 

5.6

2.5 

3.0

29

46

102

171

270

395

540

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

2S

29

30

31

Total

Mean

Ac- ft

Oct.

6.8

4.9

3.2

3.8

3.0

3.0

3.0

3.0

4.0

3.8

4.2

4.2

4.7

6.2

7.8

6.8

7.8

7.5

8.4

7.8

8.7

8.7

11

11

12

11

*10

11

10

13

12

222.3

7.17

441

Nov.

11

IS

9

11

10

9

8

7.5

7

6

6.2

5.5

5.5

5

5

5

5.5

197.7

6.59

392

Dec.

( )

> 5.5

I ..

f 100

400

170

100

65

45

40

35

30

1,110.0

35.8

2,200

Jan.

29

28

26

25

24

23

22

21

20

20

19

19

 19

18

18

18

17

17

17

16

16

16

15

15

15

14

13

12

11

TT

11

565

18.2

1,120

Feb.

> 11

> 13

___(*)

337

11.6

668

Mar.

» 13

15

20

30

60

75

90

110

160

180

£36

199

72

46

*32

30

34

1,584

51.1

3,140

Apr.

36

26

30

29

33

28

30

32

33

39

62

80

100

215

315

437

360

558

412

352

349

340

272

£25

*198

165

148

165

174

156

5,199

173

10,310

May

156

120

96

86

80

80

86

86

84

88

95

103

119

107

84

63

49

44

54

62

77

*98

108

106

112

153

150

146

142

132

123

3,089

99.6

6,130

June

-§8 106

71

65

55

45

42

28

22

19

17

13

12

8.1

6.2

6.2

*6.2

8.4

18

9.8

9.1

6.5

5.6

6.5

1O

10

11

11

9.5

11

736.1

24.5

1,460

July

9.8

11

9.8

11

15

17

15

13

11

9.1

9.1

7.8

6.8

6.8

6.5

5.1

4.4

3.5

3.0

2.8

2.0

1.7

2.1

1.5

*1.7

2.6

£.6

2.6

2.2

2.4

3.0

201.9

6.51

400

Aug.

3.8

4.7

5^6

5.4

4.4

3.8

4.4

4.2

3.2

2.8

2.£

3.3

3.5

4.0

3.8

3.£

.4

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

6£.7

2.02

124

Sept.

( )

( )

0

0

0

Calendar year 1955: Max 400 Min 0 Mean 30.1 Ac-ft £1,820

Water year 1955-56: Max 437 Min 0 Mean 36.4 Ac-ft £6,380
84 MUD LAKE-LOST RIVER BASINS

Beaver Creek at Dubols, Idaho

Location. Lat 44°11', long 112"14' , NWi sec. 21, T. 10 N., R. 36 E. , on left bank half a 

mile north of.Dubols.

Drainage area. 220 sq mi, approximately.

Records available. April 1921 to September 1956 (no winter records 1925-28, 1930).

Gage. Water-stage recorder. Altitude of gage is 5,150 ft (by barometer). Prior to 

May 8, 1927, staff gage at site 175 ft downstream at datum 2.08 ft lower.

Average dls cha rge.--2 9 years (1921-24, 1928-29, 1931-56), 16.8 cfs (12,160 acre-ft per 

year).

Extremes. Maximum discharge during year, 789 cfs Dec. 23 or 24 (gage height, 4.38 ft, 

from floodmark); no flow most of year.

1921-56: Maximum discharge, 858 cfs Apr. 7, 1930 (gage height, 4.77 ft); no flow 

for long periods.

Remarks.--Records good except those for periods of fragmentary gage-height record and 

those computed from once- or twice-daily staff-gage readings, which are fair, and those 

for periods of no gage-height record, which are poor.

Cooperation. Water-stage recorder inspected and six discharge measurements furnished by 

employees of Water District No. 66.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

C)

0

0

0

Nov.

0

0

0

Dec.

0

0

o

*0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

a5

a!30

g594

g83

g46

g40

g!6

*bglO

a5

al

730

23.5

1,450

Jan.

C)

0

0

o

Feb.

(*)

------

0

0

0

Mar.

0

0

0

0

a2

al

al

a2

a2

a2

al

al

al

al

al

a4

alO

f30

f51

92

83

105

116

107

135

£85- 153

g61

»bf81

88

81

1,297

41.8

2,570

Apr.

57

»36

25

24

32

M

20

21

29

49

108

127

125

156

160

142

112

81

61

51

46

45

45

38

*32

27

44

48

34

30

1,821

60.7

3,610

May

23

T8

15

13

14

13

13

11

11

14

15

21

17

12

7.7

4.6

2.6

.8

.7

2.0

3.7

 fll

fio

*6.7

f7.0

*fll

*14

12

13

*17

12

345.8

11.2

686

June

5.8

f2.1

fl.O

.7

*1.2

2.0

1.4

.3

0

0

0

0

0

o

0

*o

0

0

0

0

0

0

0

0

o

0

o

0

0

0

14.5

0.48

29

July

(*)

0

0

0

Aug.

(*)

0

0

0

Sept.

(*)

0

0

0

Calendar year 1955: Max 394 Mln o Mean 9.13 Ac-ft 6,61O

Water year 1955-56: Max 394 Mln 0 Mean 11.5 Ac-ft 8,340

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

streams.

b Stage-discharge relation affected by Ice.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.

g Discharge computed from once- or twice-daily staff-gage readings.
MOD LAKE-LOST RIVER BASINS 85

Beaver Creek at Camas, Idaho

Location.--Lat 44°01' , long 112 e 14' , in NE£ sec. 21, T. 8 N., R. 36 E., on right bank a 

quarter of a mile northwest of Oregon Short Line Railroad station at Camas and threeeighths of a mile upstream from mouth.

Drainage area. 510 sq mi, approximately. 

Records available . April 1921 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 4,790 ft (by barometer). Prior to 

Dec. 22, 1949, staff gages at nearby sites at present datum.

Average discharge. 35 years, 3.90 cfs (2,820 acre-ft per year).

Extremes.--Maximum discharge during year, 173 cfs Mar. 27 (gage height, 3.62 ft); no flow 

for most of year.

1921-56: Maximum discharge recorded, 186 cfs Apr. 28, 1952 (gage height, 3.48 ft); 

no flow for long periods in each year; no flow for entire water years 1929, 1931-37, 

1940.

Remarks. Records good. Plow affected by diversions for irrigation above Dubois, 14 miles 

above station, and by heavy channel losses below Dubois.

Cooperation. One discharge measurement and occasional inspections of recorder furnished 

by employees of Water District No. 66.

Rating table, water year 1955-56 (gage height, In feet,

and discharge. In cubic feet per second)

(Shifting-control method used Dec. 24)

0

0.7

2.3

4.3 

9.Z

2.1 

2.3 

2.6

3.0 

3.5

55

97

157

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

0

0

0

Dec.

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

53

43

11

6.9

*3.0

0

0

0

116.9

3.77

23Z

Jan.

(*)

0

0

0

Feb.

(*)

0

0

0

Mar.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

13

42

34

59

73

94

124

86

40

*49

56

53

7 723

Z3.3

1,430

Apr.

45

*18

13

10

13

9 Z

5 9

5 0

5 9

9 8

34

58

67

75

8Z.

74

58

45

Z6

16

12

9.Z

9.Z

7.9

*5.0

3.1

.4

3.7

3.3

jJL

7Z3.7

24.1

1,440

May

{«)

(«)

0

0

0

June

(*)

0

0

0

July

(*)

0

0

0

Aug.

(*)

0

0

0

Sept.

(*)

(*)

0

0

0

Calendar year 1955: Max 53 Mln 0 Mean 0.72 Ac-ft 523

Water year 1955-56: Max 124 Mln 0 Mean 4.27 Ac-ft 3,100

Discharge measurement or observation of no flow made on this day.
MUD LAKE-LOST RIVER BASINS

Mud Lake near Terreton, Idaho

Location. Lat 43°54 r , long 112°21', in NE^SE^ sec. 32, T. 7 N., R. 35 E., 670 ft north 

of mouth of Camas Creek, 4.4 miles northeast of First Owsley pumphouse, and 5^ miles 

northeast of Terreton.

Drainage area.--1,050 sq mi, approximately, not including Medicine Lodge Creek. 

Records available.--April 1921 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 4,774.99 ft above mean sea level, unadjusted. Prior to Oct. 31,'1931, staff gages at or near pumphouse (now used as supplementary gage) at same datum. Oct. 31, 1931, to Sept. 30, 1954, water-stage recorder 

at site 2.7 miles southwest and 2 miles north of First Owsley pumphouse at same datum.

Extremes.--Maximum contents during year, 30,500 acre-ft May 4; maximum gage height, 

7.00 ft May 4 (affected by wind); minimum contents, 3,390 acre-ft Aug. 11; minimum 

gage height, -0.05 ft Aug. 30 (affected by wind).

1921-56: Maximum contents observed, 61,660 acre-ft May 5, 1923 (gage height, 9.20 ft); 

practically no contents Oct. 1 to Nov. 15, 1937, due to bypassing Camas Creek (see 

Remarks).

uj_vei D_i_unK cti'c mane uy vai'^uua means irum aujciLeiiu .ieiK.es emu. _ __ _

above lake. Area of Mud Lake is vajried from time to time by changes in dikes. Figures given herein represent contents above gage height, -4.0 ft. Capacity table prepared from surveys made by Geological Survey and adjusted for changes in dikes. High 

winds frequently disturb the recording of lake stages.

Cooperation.--Water-stage recorder inspected by employees of Water District No. 

supplemental staff-gage readings furnished by employees of Owsley Canal Co.

66 and

Revisions. WSP 1247: Drainage area.

Capacity table, water year 1655-56 

and contents. In acr

1.0 

2.0 

5.0

2,560

3,410

5,460

8,150

11,600

4.0 

5.0 

6.0 

7.0

height, In feet,

15,800 

20,500 

Z5,700 

31,600

Contents, at 1Z p.m., In acre-feet, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

ZO

21

Z2

Z3

24 

Z5

Z6

Z7

Z8

Z9

30

31

N(*)

Oct.

5,480 

5,44O

5,370

5,320

5,230

5,140

5,010

4,970

4,880

4,790

4,710

4,580

4,480

4,370

4,290

4,170

4,070

4,030

4,010

3,990

3,970

3,930

3,930

5.910 

3,910

3,950

3,970

3,970

4,010

4,070

4,150

0.39

-1,360

Nov.

4,250 

4,310

4,390

4,450

4,520

4,580

4,640

4,710

4,770

4,850

4,880

4.920

4,990

5,050

5,080

5,160

5,250

5,520

5,590

5,460

5,560

5,600

5,700

5,770 

5,870

5,950

6,020

6, 120

6,250

6,550

1.36

+2,200

Dec.

6,510 

6,610

6,740

6,850

6,980

7,120

7,260

7,400

7,550

7,670

7,780

7,880

8,000

8,120

8,240

8,400

8,560

8,690

8,820

8,950

9,080

9,280

9,480

9,660 

9,760

9,940

10,100

10,300

10,500

10,800

11,000

2.83

+4,650

Jan.

11,200 

11,300

11,500

11,700

11,900

12,000

12,100

12,300

12,500

12,700

12,800

13,000

13,100

13,300

15,500

13,700

13, 900

14,000

14,200

14,400

14,500

14,800

14,900

15,100 

15,200

15,400

15,600

15,700

15,900

16,000

16,200

4.09

+5,200

Feb.

16,500 

16,500

16,700

16,800

17,000

17,200

17,300

17,400

17,500

17,700

17,900

18,000

18,100

18,300

18,500

17,700

18,900

19,000

19,100

19,400

19,500

19,600

19,600

19,800 

19,900

20, 000

20,200

20,400

20,500

4.99

+4,300

Mar.

20.6OO 

20,700

20,800

20,900

21,OOO

21,100

21,500

21,400

21,400

21,500

21,600

21,700

21,900

22,000

22,100

22,200

22,500

22,400

22,500

22,600

22,700

22,800

23,000

23,200 

23,500

23,700

25,900

24,100

24,400

24,500

24,600

5.80

+4,100

Apr.

24.800 

25,000

25,200

25,300

25,400

25,500

25,600

25,600

25,700

25,900

26,000

26,100

26,200

26,400

26,700

26,900

27,000

27,300

27,500

27,800

28,100

28,300

28,700

28,900 

29,000

29,200

29,300

29,500

29,800

50.000

6.74

+5,400

May

30,100 

30,200

30,300

50,500

50.400

30,500

50,500

50,200

29,900

29,500

28,900

28,400

28,100

27,700

27,300

26,600

26,000

25,200

24,400

23,700

22 , 800

22,200

21,600

20,900 

20,500

20,200

19,800

19,400

19,100

19,000

18,900

4.66

-11,100

June

18 . 800 

18,600

18,500

18,300

18,100

17,700

17,300

16,600

16,200

15,700

15,000

14,500

13,900

13,300

12,700

12,100

11,600

11,100

10,700

10,200

9,790

9,480

9,120

8,790 

8,560

8,430

8.280

8,090

7,780

7.520

1.79

-11,380

July

7,200 

6,980

6,770

6,510

6,250

6,020

5,750

5,560

5,570

5,160

4,940

4,810

4,640

4,500

4,550

4,210

4,070

3,930

3,860

3,800

3,780

3,760

3,720

5,670 

5,630

3,610

3,550

5,570

5,590

5,570

5,500

0.05

-4,020

Aug.

5,500 

3,500

3,500

3,500

3,480

5,460

5,45O

5,450

5,450

5,450

5,590

3,410

5,450

3,480

3,480

3,540

5,520

5,540

3,520

3,540

3,540

3,520

3,500

3,520 

5,540

3,550

5,500

3,590

3,590

5,590

3,610

0.11

+110

Sept.

5.610 

5,610

5,650

3,630

3,680

3,680

3,700

5,700

5,720

3,720

5,760

3,840

3,880

3,890

3,910

5,930

5,970

5,990

4,010

4,010

4,010

4,030

4,030

4,070 

4,030

4,030

3,990

5,930

3,890

3,860

0.24

+250

Calendar year 1955 .................... t -2,500

Water year 1955-56.................... t -1,650

t Elevation, In feet, at end of month. 

t Change In contents, In acre-feet.
MUD LAKE-LOST RIVER BASIN 87

Medicine Lodge Creek at Ellis Ranch, near- Argora, Idaho

Location.--Lat 44°17', long 112°30', in sec. 7, T. 11 N., R. 34 E. , on left bank 4 miles 

upstream from Middle Creek, 6-J miles southeast of Argora, and 17 miles northwest" of 

Dubois.

Drainage area. 165 sq mi.

Records available. October 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,710 ft (from topographic map of dam 

sites). Prior to Nov. 16, 1940, staff gage at site 0.2 mile upstream at different 

datum. Nov. 16, 1940, to May 30, 1950, at site 50 ft downstream at present datum.

Average discharge.--15 years (1941-56), 42.4 cfs (30,700 acre-ft per year).

Extremes.--Maximum discharge during year, 138 cfs Mar. 24 (gage height, 3.81 ft); minimum, 7.1 cfs Nov. 15; minimum gage height, 1.48 ft Mar. 11.

1940-56: Maximum discharge, 229 cfs June 9, 1944 (gage height, 4.23 ft), from 

rating curve extended above 120 cfs by logarithmic plotting; minimum, 4.0 cfs Feb. 15, 

1953, Nov. 28, 1954 (gage height, 1.24 ft).

Remarks. Records good. Several diversions above and below station for irrigation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

31

SOSO

30

30

30

30

30

29

29

28

29

29

29

30

30

30

30

30

31

32" 32

32

32

32

32

*32

32

32

32

32

947

30.5

1,880

Nov.

28

19

24

30

H

28

28

27

24

24

24

20

16

20

9.7

10

11

13

18

23

29

28

28

29

28

28

28

30

30

31

717.7

23.9

1,420

Dec.

32

32

26

*20

23

22

19

16

17

17

19

24

22

14

14

16

17

18

20

24

33

47

73

54

47

46

48

34

23

22

26

865

27.9

1,720

Jan.

28

30

33

34

39

46

43

41

31

38

*44

42

42

39

42

41

40

40

39

39

38

38

40

30

22

28

32

24

21

20

i§

1,082

34.9

2,150

Feb.

22

17

18

18

20

22

25

26

26

28

30

33

34

31

31

25

27

28

30

30

32

33

34

34

34

34

34

*36

51

829

28.6

1,640

Mar.

38

40

41

40

38

30

32

41

38

,34

26

30

38

34

34

37

37

38

41

48

50

54

68

88

101

63

38

*36

36

32

32

1,333

43.0

2,640

Apr.

. 29

26

24

18

16

16

17

17

17

17

19

18

18

18

17

16

16

16

16

15

15

15

15

15

15

*16

15

14

17

28

531

17.7

1,050

May

32

35

45

47

48

48

48

49

48

48

46

46

46

44

44

43

42

42

43

43

44 *43

43

44

46

50

48

50

55

54

52

1,416

45.7

2,810

June

54

55

56

56

56

56

56

55

54

54

54

52

53

52

54

*56

56

53

51

50

51

51

49

48

47

46

46

44

44

44

1,553

51.8

3,080

July

44

42

43

42

42

42

41

40

40

39

39

40

40

38

38

38

37

36

36

36

36

38

36

36

*36

36

36

36

36

37

36

1,192

38.5

2,360

Aug.

36

35

34

33

32

33

32

32

32

32

31

30

30

28

28

28

28

28

28

28

27

26 *2~6

26

26

26

26

28

27

27

26

909

29.3

1,800

Sept.

26

26

25

26

26

26

26

26

26

26

27

26

26

26

26

25

25

25

242"4

24

25

26

26

26

26

26

26

26

*26

770

25.7

1,530

Calendar year 1955: Max 73 Mln 9.7 Mean 34.9 Ac-ft 25,300

Water year 1955-56: Max 101 Mln 9.7 Mean 33.2 Ac-ft 24,080

Discharge measurement made on this day.
88 MUD LAKE-LOST RIVER BASINS 

Birch Creek near Reno, Idaho

Location. Lat 44°12', long 112°S7 I , in sec. 13, T. 10 N., R. 29 E., on left bank 200 ft 

west of State Highway 28, 2.6 miles south of the Lemhi-Clark County line, and 35 miles 

west of Dubois.

Drainage area. 320 sq mi, approximately.

Records available. September 1910 to June 1912 (published as "near Kaufman"), April 1921 

to January 1923, October 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 6,240 ft (by barometer). Prior to 

(5ct. 1, 1950, staff gage at site half a mile downstream at different datum.

Average discharge. 8 years (1910-11, 1921-22, 1950-56), 79.5 cfs (57,560 acre-ft per 

year).

Extremes. Maximum discharge during year, 111 cfs Mar. 24 (gage height, 1.96 ft); maximum gage height, 2.16 ft Feb. 18 (backwater from ice); minimum discharge, 63 cfs 

Jan. 30 (gage height, 1.47 ft).

1910-12, 1921-23, 1950-56: Maximum discharge, that of Mar. 24, 1956; maximum gage 

height observed, 2.70 ft Feb. 20, 1911 (backwater from ice, site and datum then in 

use) and Jan. 31, 1951 (backwater from ice); minimum recorded, 61 cfs Jan. 29, 1951; 

minimum gage height, that of Jan. 30, 1956.

Revisions. Figures of observed maximum discharge for the water years 1911 and 1912 

have been revised to 110 cfs Oct. 13, 1910 (gage height, 2.0 ft, site and datum then 

in use) and 103 cfs Apr. 11, 12, 1912 (gage height, 1.97 ft, site and datum then in 

use), superseding those published in WSP 312, 332, and 1317.

Remarks. Records good except those for periods of ice effect, which are fair. Small 

ranch diversions above station.

Revisions. Revised figures of discharge in cubic feet per second, for periods in the 

water years 1911 and 1912, superseding those published in WSP 312, 332-B, and 1317 are 

given herewith.

Discharge, In cubic feet per second, water year October 1910 to September 1911

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

Z7

28

29

30

31

Total

Mean

Ao-ft

Oct.

86

58

88

88

88

88

88

88

88

88

88

88

~59 110

99

99

99

99

99

99

99

99

99

99

99

99

99

99

88

88

88

2,913

94.0

5,780

Nov.

as

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

2,640

88.0

5,240

Dec.

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

2,728

88.0

5,410

Jan.

> e93

2,883

93.0

5,720

Feb.

> e90

2,520

90.0

5,000

Mar.

91

92

93

94

91

91

91

91

91

91

90

90

90

90

90

90

90

90

90

94

96

9999"

94

91

91

90

91

96

96

96

2,859

92.2

5,670

Apr.

95

9T

90

90

89

88

88

88

88

88

88

88

88

88

88

88

88

87

87

87

87

89

89

88

88

87

89

89

88

89

2,655

88.5

5,270

May

*88

88

88

87

86

87

87

86

86

86

86

84

S£

85

91

93

87

85

85

85

85

86

88

88

95

91

86

86

86

87

87

2,699

87.1

5,350

June

92

99

88

92

88

88

88

88

88

88

88

88

88

88

92

92

88

*88

88

88

88

88

88

88

88

88

84

90

84

95

2,668

88.9

5,290

July

91

57

87

86

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

82

82

81

81

81

81

81

56" 80

80

80

80

2,580

83.2

5,120

Aug.

80

So

82

80

80

82

82

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

84

2,582

83.3

5,120

Sept.

80

80

80

82

80

80

80

88

88

88

9595-

92

88

88

88

88

88

*88

88

88

88

88

88

86

88

88

88

88

88

2,602

86.7

5,160

Calendar year 1910: Max - Mln - Mean - Ac-ft -

Water year 1910-11: Max 64,130 ' Min no Mean 88.6 Ac-ft 64,130

* Discharge measurement made on this day.

e Stage-discharge relation affected by Ice most of month (no gage-height record most of month); 

discharge estimated on basis of records fop adjacent periods.
MOD LAKE-LOST RIVER BASINS 

Birch Creek near Reno, Idaho Continued 

Discharge, In cubic feet per second, water year October 1911 to June 1912

89

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

99

101 TOT

88

88

88

88

88

88

99

a99

99

95

95

95

92

88

aSS

88

a88

88

a88

88

88

a88

88

88

88

88

88

2,823

91.1

5,600

Nov.

88

aM

88

92

90

88

88

88

88

92

92

90

88

a94

99

99

97

97

97

a97

97

95

92

92

92

90

88

a91

95

95

2,767

92.2

5,490

Dec.

92

92

92

92

92

92

92

92

92

92

92

92

95

95

97

97

39- 99

99

> b90

2,865

92.4

5,680

Jan.

9796-

95

9596"

96

a96

b95

b96

97

97

a97

97

a97

97

97

97

96

97

97

a96

95

95

a95

95

95

95

a95

95

95

95

2,974

95.9

5,900

Feb.

a95~ 95

95

a96

97

97

97

97

97

97

a96

96

96

96

96

96

96

96

96

96

96

96

a96

96

b97

99

99

99

99

2,800

96.6

5,550

Mar.

a99

bW

99

99

96

96

a96

96

96

96

97

96

96

96

96

a96

96

96

96

97

97

97

a96

96

96

96

96

94

W

95

95

2,986

96.3

5,920

Apr.

101

101

99

99

99

99

99

99

99

99

103

TOT

101

99

97

97

97

101

101

alOO

99

97

97

97

97

97

97

99

99

99

2,969

99.0

5,890

May

97

97

97

~97 101

97

95

95

95

95

95

92

95

92

95

95

92

95

92

92

92

92

95

92

92

88

m

88

88

88

88

2,892

93.3

5,740

June

88

88

88

86

88

84

84

88

88

88

88

88

92

m

88

88

88

88

88

88

88

88

88

84

82_

82

82

82

82

84

2,596

86.5

5,150

July Aug. Sept.

Calendar year 1911 : Max 101 Mln - Mean 89.0 Ac-ft 64,470

Water year 1911-12 : Max - Mln - Mean - Ac-ft -

a No gage-height record, discharge interpolated, 

b Stage-discharge relation affected by ice.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

74

74

74

74

75

75

75

75

74

74

74

74

74

75

75

75

75

75

75

76

76

76

76

76

76

77

 76

76

76

76

75

2,328

75.1

4,620

Nov.

75

75

76

76

76

76

76

77

77

7_8

77

76

b76

76

b76

b76

b76

76

76

77

77

76

76

76

76

76

76

76

77

77

2,287

76.2

4,540

Dec.

77

77

77

*76

76

76

76

b76

76

b75

75

75

b74

b74

b73

72

72

72" 71

72

74

76

78

75

78

78

78

b78

b78

b78

78

2,344

75.6

4,650

Jan.

77

77

77

77

77

77

77

77

77

77

*77

77

78

77

77

77

76

76

76

76

76

76

76

b76

76

b76

76

b76

b76

b76

76

2,373

76.5

4,710

Feb.

b76

b76

b76

b76

76

76

76

b76

b76

76

75

75

75

b75

b75

b75

b76

b77

b77

b76

75

75

75

75

b75

75

74

b74

*74

2,188

75.4

4,340

Mar.

73

73

72

72

71

b70

b70

70

70

69

b69

b69

69

b69

b69

b69

69

69

69

70

70

74

80

85

51

77

76

*76

76

76

76

2,248

72.5

4,460

Apr.

76

76

76

76

76

76

76

76

76

76

77

77

77

77

77

76

76

76

76

76

76

76

76

*76

77

78

75

78

78

78

2,296

76.5

4,550

May

79

79

79

79

79

79

79

80

80

79

79

78

78

78

78

79

79

79

79

79

79

*79

79

80

81

81

82

83

53

82

81

2,468

79.6

4,900

June

81

81

81

79

79

80

80

80

80

79

80

80

80

80

81

 83

81

81

81

81

81

82

81

81

81

79

79

79

78

II

2,406

80.2

4,770

July

77

78

78

77

77

76

77

77

77

77

77

77

77

77

77

76

76

76

76

78

79

79

79

79

79

 79

80

8(T

80

80

80

2,412

77.8

4,780

Aug.

79

75

78

77

77

77

76

76

76

76

75

74

74

73

73

74

72

72

73

Tl

71

 71

71

71

71

71

72

72

72

72

71

2,286

73.7

4,530

Sept.

71

7T

71

73

73

73

73

73

73

73

73

73

73

73

73

73

74

74

75

75

75

75

75

75

75

75

76

7?

76

*76

2,214

73.8

4,390

Calendar year 1955: Max 85 Mln 71 Mean 76.1 Ac-ft 55,100

Water year 1955-56: Max 85 Mln 69 Mean 76.1 Ac-ft 55,240

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

467239 O-58 7
90 MOD LAKE-LOST RIVER BASINS

Little Lost River near Howe, Idaho

Location.--Lat 43°53', long 113°06', in sec. 3, T. 6 N., R. 28 E., on left bank a 

quarter of a mile upstream from diversion dam of Blaine County Investment Co., 

6 miles northwest of Berenice, and 7 miles northwest of Howe.

Drainage area. 685 sq mi.

Records available. April 1921 to September 1956 (no winter records prior to 1941). 

Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 5,020 ft (by barometer). Prior to 

sept. 2, 1938, staff gage at site 120 ft downstream at datum 1.39 ft higher.

Average discharge. 16 years (1940-56), 69.0 cfs (49,950 acre-ft per year).

Extremes. Maximum discharge during year, 291 cfs June 2 (gage height, 4.56 ft), result 

of dam failure in Dry Creek; maximum gage height recorded, 5.79 ft sometime during 

period Feb. 13-19 (ice Jam); minimum daily discharge, 18 cfs Nov. 15, 16.

1921-56: Maximum discharge, about 450 cfs Aug. 11, 1936 (gage height, 3.1 ft, 

datum then in use, from floodmark), from rating curve extended above 100 cfs; maximum gage height observed, 6.50 ft during period Feb. 7 to Mar. 17, 1946, from floodmark (ice jam); minimum discharge observed, 4.1 cfs Dec. 12, 1940.

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

which are poor. Diversions above and below station for irrigation of about 11,900 

acres.

Cooperation. Water-stage recorder inspected by employees of Water District No. 9.

Rating table, water year 1955-56, except periods of ice effect I 

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

2.3 

2.5 

2.8 

3.2

Discharge, in cubic feet pe

15 3.6 148

26 4.0 206

52 4.4 272

96

second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

52

51

50

48

41

51

52

53

52

49

48

49

48

48

49

48

48

48

48

50

54

53

52

51

51

*50

48

51

53

53

49

1,554

50.1

3,080

Nov.

43

42

b43

47

50

48

47

48

41

30

31

b26

b22

b20

 b!8_

b!8

b21

b24

b25

b25

25

b24

b24

b24

b25

25

25

25

25

25

916

30.5

1,820

Dec.

26

b26

b22

b23

*b23

b23

b22

b22

b23

b25

26

28

b26

b22

b23

b24

b25

b26

b27

28

28

29

62

32

28

28

28

b26

b25

b25

b24

825

26.6

1,640

Jan.

b24

b25

b26

27

50

29

28

28

b27

*29

30

29

29

b28

30

29

28

b28

b28

29

29

29

29

b28

b27

b28

b30

b29

b27

b25

b24

866

27.9

1,720

Feb.

b22

b20

b21

b23

b26

b26

b25

b23

b22

b24

b24

b24

23

22

22

22

22

24

27

30

34

32

30

29

28

28

30

31

33

747

25.8

1,480

Mar.

*36

36

36

34

32

b30

b32

36

34

b34

b33

b33

33

b32

b32

b33

36

49

62

69

54

54

52

53

81

125

76

*59

61

71

62

1,500

48.4

2,980

Apr.

57

48

45

46

46

44

70

71

68

68

70

74

71

73

74

78

84

84

89

94

103

109

120

*124

121

120

125

118

112

109

2,515

83.8

4,990

May

107

102

98

101

104

106

106

108

112

114

114

114

111

108

104

102

104

113

124

133

*142

148

152

158

161

*169

168

172

172

172

175

3,974

128

7,880

June

178

*243

219

217

209

203

188

182

178

190

175

172

168

156

155

168

172

156

145

140

*148

133

124

128

122

124

124

120

121

114

4,872

162

9,660

July

111

103

114

109

103

102

94

92

86

86

89

89

85

84

83

83

80

74

73

72

73

78

73

71

73

*70

72

72

72

80

75

2,621

84.5

5,200

Aug.

74

73

71

62

63

61

63

63

60

58

60

58

57

57

62

61

61

59

57

55

56

*55

57

56

57

58

62

65

60

55

55

1,871

60.4

3,710

Sept.

55

52

52

53

54

54

55

56

54

55

54

57

56

55

53

53

53

52

52

53

54

54

56

55

53

52

52

55

55

55

1,619

54.0

3,210

Calendar year 1955 : Max 145 Min 13 Mean 51.8 Ac-ft 37,520

Water year 1955-56 : Max 243 Mln 18 Mean 65.2 Ac-ft 47,370

Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note.--No gage-height record Feb. 13-29; discharge estimated on basis of weather records and 

records for Medicine Lodge Creek and other nearby streams.
MUD LAKE-LOST RIVER BASINS 91

Blaine County Investment Co.'s canal near Howe, Idaho

Location. Lat 43°53' , long 113"05' , in NW^NW^ sec. 11, T. 6 N., R. 28 E., on left end 

of weir, 900 ft downstream from headgates and 7 miles northwest of Howe.

Records available .--April 1924 to September 1956 (prior to 1939, irrigation seasons only).

Gage.--Staff gage and Cippoletti weir; gage read once daily. Prior to June 25, 1927, 

staff gage at site 700 ft upstream at different datum. June 26, 1927, to May 6, 1945, 

staff gage at site 180 ft upstream at present datum.

Extremes.--1924-56: Maximum daily discharge, 90 cfs June 8, 1956; no flow during long 

periods in each year.

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

poor. Canal diverts water from Little Lost River in sec. 2, T. 6 N., R. 28 E., for 

irrigation of lands in project of Blaine County Investment Co.

Cooperation. Gage readings furnished by employees of Water District No. 9.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

*7.3

7.3

7.3

7.3

7.3

7.3

226.3

7.30

449

Nov.

3.3

a. 3

12.0

0.40

24

Dec.

aO.2

*.2

a. 2

aO

3.0

0.10

6.0

Jan.

(*)

0

0

0

Feb.

0

0

0

Mar.

(*)

(*)

0

0

0

Apr.

0

0

0

0

2.4

3.4

11

17

20

23

29

34

32

27

24

24

24

27

28

30

34

36

34

*34

35

36

40

40

37

35

.718.8

24.0

1,430

May

28

20ia18

19

19

20

21

23

25

26

26

26

24

20

19

19

23

29

36

. »43

49

54

59

63

*68

72

74

74

78

80

1,173

37.8

2,330

June

79

77

77

78

80

84

88

90

88

89

86

83

74

63

58

58

65

60

48

42

*42

40

34

33

33

33

32

30

29

29

1,802

60.1

3,570

July

29

26

27

28

25

23

16

12

*11

11

11

11

10

10

10

10

10

9.0

7.8

7.8

10

14

14

14

14

*13

13

9.2

0

0

0

405.8

13.1

805

Aug.

0

0

0

0

0

0

0

0

0

0

0

5.1

10

 10

11

11

11

10

9.8

9.8

9.8 *9.8

9.8

9.8

9.8

9.8

9,8

8.1

6,4

6,4

6.4

183.6

5.92

364

Sept.

6.

6.

6.

6.

6.

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

5.8

5.4

5.4

5.4

5.4

5.4

5.4

5.4

2.2

0

0

0

0

0

148.2

4.94

294

Calendar year 1955 : Max 59 Mln Gt, Mean 7.10 Ac-ft 5,140

Water year 1955-56 : Max 90 Mln o " " Mean 12.8 Ac-ft 9,270

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of observer's notes and 1 discharge measurement .
92 MUD LAKE-LOST RIVER BASINS

Big Lost River at Wild Horse, near Chilly, Idaho

Location. Lat 43°56', long 114°07', in sec. 17, T. 7 N., R. 20 E., on right bank a 

quarter of a mile upstream from East Pork Big Lost River, 2 miles downstream from 

Wild Horse dam site, and 16 miles southwest of Chilly.

Drainage area. 114 sq mi.

Records available. March 1944 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 6,820 ft (from topographic map).

Average discharge. 12 years, 103 cfs (74,570 acre-ft per year).

Extremes. Maximum discharge during year; 1,270 cfs May 24 (gage height, 6.18 ft); minimum, 9.7 cfs Mar. 6 (gage height, 1.18 ft).

1944-56: Maximum discharge, that of May 24, 1956; minimum, 7.6 cfs Mar. 16, 21, 

1955; minimum gage height, 1.11 ft Mar. 23, 1951.

Remarks. Records excellent except those for periods of ice effect, which are good.

Rating tables, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used May 19, 20)

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

1.3 

1.6 

2.0

2.5 

3.0 

3.6

118

207

354

1.6 

2.0 

2.5 

2.8

1

110

159

245

3.5

4.0 

5.0 

6.1

365

520

855

1,240

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

Ac-ft

Oct.

29 

29

28

28

28

28

28

27

26

26

27

26

26

26

26

26

26

27

29

29

28

27

26

*26

25

26

26

28

26

833

26.9

0.236

0.27

1,650

Nov.

25 

22

25

26

25

24

25

24

24

25

23

20

20

21

11

17

18

19

22

34

32

26

22

24

24

25

24

23

24

23

703

23.4

0.205

0.23

1,390

Dec.

22 

21

20

19

*18

20

20

21

22

22

22

23

22

21

22

22

22

22

22

22

23

29

~92 209

52

42

35

b27

27

29

30

'1,020

32.9

0.289

0.33

2,020

Jan.

b28 

b28

b27

29

29

28

26

26

24

*26

25

25

24

22

25

2J

22

22

22

23

22

23

22

20

b!9

blS

b!9

b20

b20

b!9

blS

725

23.4

0.205

0.24

1,440

Feb.

b!7 

b!8

b20

b21

b21

b21

b20

b20

b20

b21

22

2?

22

21

21

b!9

blS

20

21

21

21

21

22

20

*20

20

20

20

20

590

20.3

0.178

0.19

1,170

Mar.

20 

20

20

20

19

18

19

20

20

19

18

18

20

20

20

20

20

20

20

20

20

22

28

38

62.

59

40

34

35

36

34

799

25.8

0.226

0.26

1,580

Apr.

29 

27

26

3T

31

*28

28

29

34

46

50

49

51

54

63

74

83

90

114

142

174

209

218

203

186

*182

164

148

138

1 "**9 J.OC

2,833

94.4

0.828

0.92

5,620

May

132 

143

166

196

201

196

186

186

178

166

164

148

137

131

135

174

264

354

456

610

727

855

988

*1.220

1,090

1,060

1,000

897

980

953

1,030

15,123

488

4.28

4.93

30, 000

June

1.150 

1,100

980

886

827

654

554

557

644

710

767

706

678

629

582

511

450

419

*436

475

425

389

386

395

395

389

395

398

398

571

17,656

589

5.17

5.76

35,020

July

332 

517

284

269

269

284

287

281

295

308

308

296

266

257

221

200

182

172

167

172

177

*167

155

153

151

137

136

135

131

126

118

6,749

218

1.91

2.20

13,390

Aug.

108 

101

96

89

88

84

84

81

76

75

1Z

69

68

67

69

69

67

65

65

61

61

58

57

55

55

57

59

56

*53

51

49

2,165

69.8

0.612

0.71

4,290

Sept.

47 

45

44

44

44

43

42

42

41

42

42

41

40

39

38

37

37

37

36

36

36

36

36

36

36

35

34

35

36

35

1,172

39.1

0.343

0.38

2,320

Calendar year 1955: Max 525 Mln 14 Mean 75.4 Cfsm 0.661 In. 8.98 Ac-ft 54,620

Water year 1955-56: Max 1,220 Mln 17 Mean 138 Cfsm 1.21 In. 16.42 Ac-ft 99,890

Peak discharge (base, 500 efs). Dec. 23 (4 p.m.) 396 cfs (3.74 ft); May 24 (4:30 a.m.) 1,270 cfs 

(6.18 ft); June 1 (8 a.m.) 1,200 cfs (5.98 ft); June 11 (5 a.m.) 806 cfu (4.86 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
MUD LAKE-LOST RIVER BASINS 93

Big Lost River at Howell Ranch, near Chilly, Idaho

Location. Lat 44°00', long 114°02', in sec. 30, T. 8 N., R. 21 E., on left bank at

Howell Ranch, If miles downstream from Burnt Creek, 6 miles downstream from East Pork, 

9 miles southwest of Chilly, and 21 miles northwest of Mackay.

Drainage area.--450 sq mi.

Records available . April 1904 to November 1914, May 1920 to September 1956 (no winter 

records prior to 1949).

;e. Water-stage recorder. Datum of gage is 6,621.95 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Apr. 20, 1906, staff gage at site 

If miles downstream at different datum. Apr. 20, 1906, to June 6, 1912, staff gage 

at site 100 ft downstream at different datum. June 7, 1912, to Nov. 14, 1914, staff 

gage at present site at datum 2.07 ft lower. May 11 to June 16, 1920, staff gage at 

present site and datum.

Average discharge. 9 years (1904-5, 1948-56), 301 cfs (217,900 acre-ft per year).

Extremes. Maximum discharge during year, 3,410 cfs May 24; maximum gage height recorded, 

5.21 ft June 1; minimum daily discharge, 44 cfs Feb. 1.

1904-14, 1920-56: Maximum discharge, 3,960 cfs June 26, 1954 (gage height, 

6.00 ft); minimum observed, 19 cfs (discharge measurement) Dec. 12, 1939.

Remarks. Records good except those for period Nov. 1 to Apr. 5, which are poor. No 

regulation. Several small diversions for irrigation above station. Hammerly ditch 

(capacity, about 20 cfs) diverts a quarter of a mile downstream.

Cooperation.--Water-stage recorder inspected by employees of Water District No. 27. 

Revisions.--WSP 1287: Drainage area.

Rating table, Mater year 1955-56, except period of ice effect [gage

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

(Shifting-control method used May 20-26, Aug. 2 to Sept. 30)

0.8 

1.0 

1.3 

1.6 

2.0

51

86

158

248

397

2.5 

3.0

3.5 

4.0 

5.2

660

1,040

1,470

1,960

3,270

Discharge, in cubic feet per second, Mater year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

75 

75

73

73

75

75

76

75

73

76

82

78

78

78

76

76

75

75

76

82

90

95

86

80 

78

78

*76 

76

73

78

71

2,403

77.5

4,770

Nov.

65 

60

68

72

70

68

68

66

66

68

62

56

56

58

48

48

52

54

60

9i

90

75

62

66 

66

70

68 

66

66

64

1,952

65.1

3,870

Dec.

61 

58

54

52

*5jD

54

54

56

60

60

60

60

60

58

60

60

60

60

60

60

63

85

540 260" 

170

130

100 

82

76

80

80

2,823

91.1

5,600

Jan.

80 

80

76

80

80

76

72

72

66

72

70

68

66

62

70

65

62

60

60

64

62

62

58

56

52

49

50 

52

52

49

iZ

1,990

64.2

3,950

Feb.

44 

49

52

52

54

54

52

50

54

57

60

61

60

59

59

52

48

55

58

58

58

58

62

56 

*56

56

56 

56

56

1,602

55.2

3,180

Mar.

56 

56

56

56

53

50

52

56

56

54

52

50

56

56

56

56

56

54

54

56

56

58

75

100 

170

160

130 

92

94

96

90

2,212

71.4

4,390

Apr.

80 

72

72

82

82

*78

88

86

108

148

172

153

175

186

235

322

376

389

446

494

541

635

648

581

*575

515 

484

465

437

9,323

311

18,490

May

153" 419 

510

610

629

610

570

570

558

525

520

479

441

419

423

499

707

1,040

1,400

1,830

2,130

2,450

*2,720

*3.260 

3,110

3,080

2,880 

2,600

*2,660

2,660

2,790

43,554

1,405

86,390

June

3.140 

3,060

2,860

2,660

2,540

2,110

1,850

1,890

2,110

2,270

2,340

2,190

2,120

2,000

1,920

1,680

1,400

1,190

*1,260

1,470

1,270

1,090

1.070

1,140 

1,160

1,120

1,150 

1,150

1,200

1,110

53,520

1,784

106,200

July

947 875"

807

727

727

763

785

763

785

822

837

822

720

714

635

592

552

531

520

536

541

515

*489

475 

460

446

432 

437

451

441

597

19,544

630

38,760

Aug.

372 

337

304

279

262

255

248

248

232

222

213

201

195

195

201

201

198

189

186

186

180

175

166

161 

161

164

164

155

*145

140

152

6,467

209

12,830

Sept.

130

TzT

122

122

120

118

115

118

115

120

127

122

122

120

115

113

113

110

108

108

108

108

108

106 

106

106

T56"

108

106

3,426

114

6,800

Calendar year 1955: Max 1,620 Mln 48 Mean 217 Ac-ft 157,200

Water year 1955-56: Max 3,260 Mln 44 Mean 407 Ac-ft 295, 20O

Peak discharge (base, 900 cfe). Dec. 23 (time and discharge unknown); May 24 (l p.m.) 3,410 

(5.16 ft); June 11 (5 to 8 a.m.) 2,460 cfs (4.49 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 1 to Apr. 5. No gage-height record Nov. 3 

to Dec. 4, Dec. 6 to Mar. 30, Apr. 1-5; discharge estimated on basis of 2 discharge measurements, 

weather records, and records for station at Wild Horse.
94 MOD LAKE-LOST RIVER BASINS

Big Lost River (east channel) above Mackay Reservoir, near Mackay, Idaho

Location. Lat 43°58 I 20", long 113°43 I 50", in NE£ sec. 4, T. 7 N. , R. 23 E. , on right 

bank above flow line of reservoir, 3 miles upstream from Mackay Dam and 7f miles 

northwest of Mackay.

Records available. May 1919 to September 1956.

Gage. Water-stage recorder. Datum of gage is 6,061.80 ft above mean sea level, unadJusted. Prior to Sept. 22, 1934, at site 550 ft upstream at different datum (datum 

raised 1 ft Apr. 20, 1920). Staff gage on Mackay Reservoir is used as an auxiliary 

gage during periods of backwater from reservoir.

Average discharge. 37 years, 71.4 cfs (51,690 acre-ft per year).

Extremes. Maximum discharge during year, 1,330 cfs June 1; maximum gage height, 5.28 ft 

June 3 (backwater from Mackay Reservoir); no flow for lo'ng periods.

1919-56: Maximum discharge, 1,360 cfs June 7, 8, 1952; maximum gage height, that 

of June 3, 1956; no flow for long periods in many years.

Remarks. Records good except those for periods of backwater and those below 10 cfs,

which are fair, and those for periods of no gage-height record, which are poor. Diversions above station for irrigation. See page 98 for combination of surface flow into 

Mackay Reservoir. Zollinger ditch which bypasses the station was reported not flowing Oct. 27, Jan. 26, Apr. 7, July 24, Aug. 30, and to be carrying 4.34 cfs Apr. 25, 

1 cfs (estimated) June 1, 1.08 cfs June 12.

Cooperation. Water-stage recorder inspected by employees of Water District No. 27. 

Revisions (water years). WSP 1287: 1919-21.

Rating tables, water year 1955-56, except periods of backwater from Mackay Reservoir (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used June 8-20, July 8-24)

1.7 

1.9 

2.1 

2.5

Oct. 1 to July 24

0 3.0

2 3.5

8 4.0

18 4.6

5.2

July 25 to Sept. 3o

80

170

312

496

805

1,440

2.8

2.9

3.0 

3.3

3.6 

3.9

4.2

70

125

218

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

3 

3

3

3

4

4

4

3

3

3

3

3

3

3

3

3

3

4

4

4

5

F

4

4

4

4

*4 

4

4

4

4

112

3.6

222

Nov.

4 

4

3

3

3

3

3

3

3

3

3

3

3

3

3

a3

a3

a2

a¥

2

a2

a2

a2

a2

a2

a2

2

a2

a2

a2

79

2.6

157

Dec.

a2 

a2

a2

2

al

*1

1

al

al

al

1

al

al

al

al

aO

ao

0

aO

aO

aO

aO

a3

1

aO

aO

aO 

aO

aO

aO

aO

23

0.7

46

Jan.

(*)

0

0

o

Feb.

(*)

- -----

0

0

0

Mar.

0 

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

o

0

0

6

5 

0

0

*0

0

11

0.4

22

Apr.

0 

0

0

0

0

o

»o

0

o

0

0

o

0

0

0

0

o

0

0

0

35

90

112

115

*115

119

TIT

108

105

107

1,023

34.1

2,O3O

May

105 

115

130

142

152

155

155

157

150

146

136

126

117

108

99

97

107

159

250

397

522

743

973

1,140

1,240

1,240

1,260 

1,220

1,190

1,180

1,250

14,961

483

29,670

June

*1,510 

1,170

1,250

1,200

1,100

1,090

1,050

1,030

1,000

991

982

*955

939

931

907

883

826

768

755

774

763

714

667

597

541

464

426 

393

372

559

25,207

840

50, 000

July

333 

332

342

334

323

312

305

290

283

283

293

290

268

259

244

224

208

192

180

175

180

175

163

*157

148

138

148 

154

154

154

143

7,184

232

14,250

Aug.

141 

125

110

92

80

74

67

64

60

55

52

46

42

40

37

36

33

31

31

30

30

28

27

26

24

23

23 

23

19

18

*1Z

1,504

48.5

2,980

Sept.

16

14

14

14

14

13

13

13

9

5

7

7

9

6

8

9

9

9

9

9

9

9

9

9

8

8

8 

8

8

8

291

9.7

577

Calendar year 1955: Max 376 Mln 0 Mean 26.6 Ac-ft 19.24O

Water year 1955-56 : Max 1,310 Mln 0 Mean 138 Ac-ft 99,950

* Discharge measurement or observation of no flow made on this day.

a No gage-height recordj discharge estimated on basis of weather records, records for nearby 

streams, and records for adjacent periods.

Note. Stage-discharge relation affected by backwater from Mackay Reservoir May 27 to June 7, 

June 21 to July 7.
MUD LAKE-LOST RIVER BASINS 95

Big Lost River (west channel) above Mackay Reservoir, near Mackay, Idaho

Location. Lat 43°58'10", long 113 0 44'00", in NW£ sec. 4, T. 7 N. , R. 23 E., on left bank 

above flow line of reservoir, 3 miles upstream from Mackay Dam and 7f miles northwest 

of Mackay.

Records available. May 1919 to September 1956.

Gage. Water-stage recorder. Datum of gage is 6,062.38 ft above mean sea level, unadjusted. Prior to May 26, 1919, staff gage and May 26, 1919, to May 13, 1938, waterstage recorder, at site 200 ft upstream at different daturas. Staff gage on Mackay 

Reservoir is used as an auxiliary gage during periods of backwater from Mackay Reservoir.

Average discharge. 37 years, 58.7 cfs (42,500 acre-ft per year).

Extremes. Maximum discharge during year, 734 cfs June 2 (gage height, 5.06 ft); minimum, 

3.8 cfs Mar. 9 (gage height, 1.73 ft).

1919-56: Maximum discharge, 1,200 cfs (estimated) about June 12, 1921 (gage 

height, 4.45 ft, from floodmark, site and datum then in use); minimum, that of Mar. 9, 

1956.

Remarks.--Records good. Diversions above station for irrigation. See page 98 for cotnbination of surface flow into Mackay Reservoir.

Cooperation. Water-stage recorder inspected by employees of Water District No. 27.

Rating table, water year 1955-56 (gage height, in feet

and discharge, in cubic feet per second) 

(Backwater from Mackay Reservoir May 26 to June 8, 

June 20 to July 10)

1.7

1.8

1.9

2.0

2.1 

2.3

4.0 

6.0 

9.0

2.5 

3.0 

3.5 

4.0 

4.5 

5.0

64

160

270

425

640

905

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

9.0

976

9.

9 .

9.

9.

9.

9.

9.

9.

9.

9.

9.

9.

9.8

9.8

9.8

9.8

9.8

10

11

11

10

10

10

10

 11

10

9.8

9.8

9.8

301.0

9.71

597

Nov.

9.4

9.4

9.4

9.4

8.7

9.0

8.7

8.7

8.7

8.7

8.7

8.4

8.4

8.1

7.8

7.8

7.5

7.5

7.8

7.8

7.8

7.8

7.5

7.5

6.9

7.2

7.2

7.2

7.2

7.2

243.4

8.11

483

Dec.

7.2

6.9

6.9

6.9

6.3

*6.6

6.6

6.6

6.6

6.6

6.3

7.2

6.9

6.6

6.3

6.3

6.3

6.0

6.3

6.3

6.3

6.6

9.4

778

6.9

6.6

6.6

6.3

6.3

6.0

2iE

206.3

6.65

409

Jan.

5.6

576

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.4

5.4

5.4

5.4

5.2

5.2

*5.2

5.2

5.2

5.0

570

5.0

169.0

5.45

335

Feb.

5.0

4.8

4.8

4.8

4.4

4.2

4.2

4.2

4s 2

4.2

4.2

4.2

4.2

4.2

4.2

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.2

4.2

*4.2

4.2

4.2

4.2

4.2

123.2

4.25

244

Mar.

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.2

4.2

5.0

5.6

5.8

K74

4.6

4.6

4.8

5.0

5.0

4.8

135.0

4.35

268

Apr.

4.8

4.8

4.6

4.6

4.4

4.4

*4.8

5.0

5.0

5.0

5.2

5.2

5.4

5.2

5.2

5.6

5.6

5.4

5.4

5.2

6.0

6.9

8.1

11

*13

15

16

16

16

15

223.8

7.46

444

May

15

T6

19

23

24

25

25

24

26

27

26

26

23

20

19

17

18

24

56

124

194

*304

394

564

700

713

69?

635

608

602

625

6,612

213

13,110

June

*685

65T

671

616

624

545

454

400

425

465

493

489

*457

414

386

358

301

238

206

235

223

185

170

167

187

180

171

161

1ST

177

10,904

363

21,630

July

167

156

152

138

115

98

91

82

82

82

95

95

88

84

80

75

71

62

56

54

58

59

56

*56

54

50

51

56

56

59

2,536

81.8

5,030

Calendar year 1955: Max 375 Mln 6.6 Mean 32.6 Ac-ft 23,580

Aug.

54

53

45

50

47

40

35

32

27

24

20

20

18

17

17

17

17

16

16

16

16

16

16

16

15

16

16

15

15

*15

M

751

24.2

1,490

Sept.

14

T4

14

14

14

14

15

15

15

15

15

15

15

15

14

15

15

14

14

15

15

15

15

15

15

15

15

16

17

17

446

14.9

885

Water year 1955-56: Max 713 Min 4.0 Mean 61.9 Ac-ft 44,920

Discharge measurement made on this day.
96 MUD LAKE-LOST RIVER BASINS

Warm Spring Creek (east channel) near Mackay, Idaho

Location.--Lat 43°58'10", long 113°44'30", In NWj sec. 4, T. 7 N., R. 23 E., on left 

bank 700 ft upstream from confluence with west channel and 1\ miles northwest of 

Mackay.

Records available. May 1919 to September 1956.

Gage. Water-stage recorder. Datum of gage Is 6,064.60 ft above mean sea level, unadjusted. Prior to May 3, 1920, staff gage at site 100 ft downstream at different 

datum. May 3, 1920, to Dec. 2, 1938, staff gage at site 200 ft downstream at datum 

0.26 ft lower.

Average discharge. 37 years, 30.4 cfs (22,010 acre-ft per year).

Extremes. Maximum discharge during year, 222 cfs June 5 (gage height, 4.15 ft); minimum, 

12 cfs Jan. 3, Feb. 16-21; minimum gage height, 1.60 ft Feb. 18, 19.

1919-56: Maximum discharge, 250 cfs June 27, 1954 (gage height, 4.38 ft); minimum, 5.2 cfs Apr. 16, 1955 (gage height, 1.35 ft).

Remarks. Records excellent except those below 20 cfs, which are good. Major portion 

of flow Is return from Irrigation, seepage from river channel upstream, and discharge 

of large spring. See page 98 for combination of surface flow Into Mackay Reservoir.

Cooperation. Water-stage recorder Inspected by employees of Water District No. 27.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

1.5 

1.7 

2.0 

2.5

9.3

18

34

70

3.0 

3.5 

4.1

110

157

217

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

15

14

14

14

15

14

15

15

14

15

15

15

16

16

17

17

17

18

18

19

20

20

20

19

20

20

*22

22

22

21

20

539

17.4

1,070

Nov.

26- 20

20

20

20

20

19

19

19

20

19

19

18

19

19

18

18

18

18

18

18

18

18

18

11

17

17

17

17

17

555

18.5

1,100

Dec.

17

17

17

16

16

*16

16

16

15

15

15

16

16

15

15

14

14

14

14

14

14

15

26

Te

15

14

14

13

13

13

13

474

15.3

940

Jan.

13

13

12 13-

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

*14

T4

13

13

13

13

404

13.0

801

Feb.

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

12

12

12

12

12

13

13

13

13

*13

13

13

13

372

12.8

738

Mar.

13

IS

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

15

16

24

28

28

23

18

16

17

17

17

17

483

15.6

958

Apr.

16

16

16

16

16

16

*16

16

17

17

17

16

17

17

17

17

17

17

17

17

18

18

20

22

*23

25

26

25

25

25

558

18.6

1,110

May

25

27

31

33

33

33

33

32

33

34

33

33

31

29

28

27

27

32

47

69

96

*119

138

170

196

190

201

190

184

181

184

2,519

81.3

5,000

June

202

216

216

209

215

196

159

135

138

152

167

167

154

142

137

131

117

104

98

*104

106

95

92 itsr

104

101

99 '100

101

101

4,159

139

8,250

July

96

92

88

84

80

78

78

77

76

76

79

80

78

75

73

71

68

64

61

ST

63

64

62

64

*64

61

64

68

68

67

68

2,248

72.5

4,460

Aug.

65

64

59

61

58

56

53

51

49

45

44

42

40

39

39

39

39

38

38

38

38

37

3T

38

38

38

39

39

40

*40

41

1,382

44.6

2,740

Sept.

41

41

41

42

42

42

43

44

42

43

44

44

44

44

44

45

44

43

44

44

45

45

46

46

47

47

47

48

49

49

1,330

44.3

2,640

Calendar year 1955 : Max 125V Mln 5.8 Mean 21.9 Ao-ft 15,840

Water year 1955-56 : Max 216 Mln 12 Mean 41.0 Ao-ft 29,810

* Discharge measurement made on this day.
MOD LAKE-LOST RIVER BASINS 97

Warm Spring Creek (west channel) near Mackay, Idaho

Location. Lat 43°58 T 00", long 113°44'30", in NW£ sec. 4, T. 7 N., R. 23 E., on right 

bank 500 ft upstream from confluence with east channel and 1\ miles northwest of 

Mackay.

Records available. May 1919 to September 1956.

Gage. Water-stage recorder. Datum of gage is 6,064.46 ft above mean sea level, unadjusted. Prior to May 4, 1920, at datum 0.54 ft lower. May 4, 1920, to Dec. 2, 1938, 

at datum 0.46 ft higher.

Average discharge. 37 years, 95.8 cfs (69,360 acre-ft per year).

Extremes. Maximum discharge during year, 324 cfs June 3; maximum gage height, 3.52 ft 

June 2; minimum discharge, 83 cfs Aug. 18 (gage height, 1.52 ft).

1919-56: Maximum discharge, 600 cfs (estimated) Aug. 11, 1936 (gage height, 

4.88 ft, present datum from floodmark); minimum, 49 cfs Apr. 27, 1935 (gage height, 

1.08 ft, present datum).

Remarks.--Records excellent except those for periods of no gage-height record or backwater from Mackay Reservoir, which are good. Major portion of flow is return from 

irrigation, seepage from river channel upstream, and discharge of large spring. See 

following page for combination of surface flow into Mackay Reservoir.

Cooperation.--Water-stage recorder inspected by employees of Water District No. 27.

Rating table, water year 1955-56, except periods of backwater from Mackay Reservoir (gage

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

(Shifting-control method used July 11 to sept. 30)

1.3 

1.5 

2.0

76

100

160

2.5 

3.0 

3.5

225

290

360

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

 3

 4

5

6

7

8

9

10

11

12

13

14

15

16

17

IB

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

107

107

106

TOT

108

110

111

110

110

108

107

106

106

106

106

106

106

107

108

108

110

111

113

113

113

117

*123

123

122

122

a!22

3,439

111

6,820

Nov.

a!22

a!21

a!21

a!20

a!20

120

119

119

119

120

120

120

120

122

120

122

123

T23

122

123

123

122

122

122

122

120

120

120

130

119

3,626

121

7,190

Dec.

122

120

120

119

119

*119

al!9

alia

al!6

al!6

116

118

116

116

116

116

114

113 TTJ

al!4

al!4

a!20

a!60

ITS

alia

a!18

al!7

all 7

al!6

all 6

al!6

3,672

118

7,280

Jan.

116

m

114

114

114

114

114

114

114

113.

113

113

114

116

116

116

114

114

116

116

116

114

114

114

116

*116

114

114

114

116

114

3,551

115

7,040

Feb.

116

117

119

TIB

117

117

118

118

118

118

117

116

116

117

117

117

117

117

117

118

117

116

116

116

114

*114

114

114

113

3,379

117

6,700

Mar.

112

112

112

113

112

112

112

112

112

112

112

112

113

113

112

112

111

TIT

113

118

120

154

165

TST

146

122

116

116

116

118

116

3,700

119

7,340

Apr.

114

114

113

114

113

112

*113

113

114

116

114

113

113

113

112

113

112

111

111

111

112

110

108

107

*105

107

110

107

107

107

3,339

111

6,620

May

107

108

114

117

113

114

113

112

114

116

113

112

111

110

108

106

TOT

111

124

150

182

*213

233

265

296

305

e2"§4~ 314

C284

C2S4 

C2B6

5,236

169

10,390

June

c303

0320

C323

c354

c30B

0287

C259

241

241

248

259

258

248

242

238

238

225

204

195

*207

213

c!99

0190

0180

0184

olSl

c!77

0175

cT75

0177

6,999

233

13,880

July

c!71

cT5?

c!66

0156

0150

C145

C143

143

140

140

141

141

136

132

129

126

122

117

113

114

116

114

111

112

*112

TT5- 108

131

128

129 

126

4,099

132

8,130

Aug.

124

ITS

107

110

102

99

96

94

93

92

90

88

87

87

87

86

84

S4

84

87

87

87

87

87

87

87

88

88

88

*8B 

89

2,862

92.3

5,680

Sept.

88

87

57

SB

SB

as

92

93

93

93

94

95

94

95

96

95

94

93

96

96

96

95

96

98

98

98

98

98

99

95

2,820

94.0

5,590

Calendar year 1955: Max 226 Mln 77 Mean 121 Ac-ft 87,320

Water year 1955-56: Max 323 Mln 84 Mean 128 Ac-ft 92,660

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of adjacent records, weather records, 

records for other stations above Mackay Reservoir, 

c Backwater from Mackay Reservoir.
98 MUD LAKE-LOST RIVER BASINS

Surface inflow to Mackay Reservoir, near Mackay, Idaho

Drainage area. 766 sq mi.

Records available.--May 1919 to September 1956. Prior to October 1952, published with 

records of Big Lost River (west channel) above Mackay Reservoir, near Mackay.

Average discharge. 37 years, 256 cfs (185,300 acre-ft per year).

Extremes.--1919-56: Maximum daily discharge, 2,760 cfs June 12, 1921; minimum daily, 

 75~cTs May 10-12, 1935.

Remarks. Records good. Records are the sura of discharges obtained at gaging stations on 

Big Lost River (east and west channels) and Warm Spring Creek (east and west channels) 

above Mackay Reservoir, near Mackay. Channels are interconnected above respective 

gaging stations, and combined flow represents practically the entire surface flow 

which enters Mackay Reservoir.

Revisions (water years).--WSP 1287: 1919-21.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

134

133

132

TSS

136

137

139

137

136

135

134

133

134

134

136

136

136

139 

140

141

146

147

147

146

147

151

160 159-

158

157

156

4,389

142

8,710

Nov.

155 154-

153

152

152

152

150

150

150

152

151

150

149

152

150

151

152

150 

150

151

151

150

150

150

148

146

146

146

146

145

4,504

150

8,930

Dec.

148

146

146

144

142

143

143

142

139

139

138

142

140

139

138

136

134

m134

134

142

198

T4T

140

139

138

136

135

135

135

4,376

141

8,680

Jan.

135

133

152

133

133

133

133

133

133

132

132

132

133

135

135

135

133

133 

135

134

134

132

132

132

134

135

133

132

132

134

132

4,129

133

8,190

Feb.

134

135

137

136

134

134

135

135

135

135

134

133

133

134

134

134

133

133 

133

134

133

133

133

133

131

131

131

131

150

3,871

133

7,68O

Mar.

129

129

129

130

129

129

129

129

129

129

129

129

130

130

129

129

128

128 

130

137

140

183

199

T5T

174

151

142

138

138

140

138

4,330

140

8,590

Apr.

135

135

134

135

133

132

134

134

136

138

136

135

134

135

134

136

135

133 

133

133

171

225

248

255

256

266

269 256"

253

254

5,143

171

10,200

May

252

266

294

315

322

327

326

325

323

323

308

297

282

267

254

247

259

326

477

740

994

1,380

1,740

2,140

2,430

2,450

2,470

2,340

2,270

2,250

2,340

29,334

946

58,180

June

2.500

2,360

2,460

2,330

2,250

2,120

1,920

1,810

1,800

1,860

1,900

1,870

1,800

1,730

1,670

1,610

1,470

1,310 

1,250

1,320

1,300

1,190

1,120

1,040

1,020

926

873

829

815

814

47,267

1,576

93,750

July

767

749

748

712

668

633

617

592

581

581

608

606

570

550

526

496

469

435 

410

404

417

412

392

389

378

357

sSI

409

406

409

395

16,067

518

31,870

Aug.

384

360

321

313

287

269

251

241

229

216

206

196

187

183

180

178

173

169 

169

171

171

168

167

167

164

164

166

165

162

161

6,499

210

12,890

Sept.

159

156

156

158

158

157

163

165

159

156

160

161

162

160

162

164

162

159 

163

164

165

164

166

168

168

168

168

170

173

173

4,887

163

9,690

Calendar year 1955: Max 1,100 Mln 92 Mean 202 Ao-ft 146,000

Water year 1955-56 : Max 2,5OO Mln 128 Mean 368 Ac-ft 267,400
MUD LAKK-LOST'RIVER BASINS 99

Mackay Reservoir near Mackay, Idaho

Location. Lat 43°57' , long 113°40', in sec. 12, T. 7 N., R. 23 E., on headgate tower 

of dam on Big Lost'River, 4 miles northwest of Mackay.

Records available. January 1919 to September 1956.

Gage.--Staff gage read once daily. Datum of gage is 6,000 ft above mean sea level, Utah 

Construction Co. datum, or about 6,001.2 ft above mean sea level, unadjusted.

Extremes. Maximum contents observed during year, 42,610 acre-ft June 2 (gage height, 

65.2 ft); minimum observed, 448 acre-ft Oct. 1-5 (gage height, 9.40 ft).

1919-56: Maximum contents observed, that of June 2, 1956; no available contents 

during periods in 1919-20, 1924, 1926, 1929, 1931-35; minimum gage height observed, 

6.3 ft Aug. 5, 1934. ess

Remarks. Reservoir is formed by earth- and rock-fill dam, which was reconstructed in 

1917-18; storage impounded by original dam not recorded. Capacity is 38,400 acre-ft 

between gage heights 7.0 (bottom of outlet tunnel) and 62.0 ft. Dead storage reported 

to be about 125 acre-ft. Water is used for irrigation of about 33,000 acres in Big 

Lost River irrigation district. About 9,000 acres irrigated from Big Lost River and 

tributaries above reservoir. Considerable seepage around dam because of its porous 

foundation, but the greater part of this water returns to Big Lost River between 

reservoir and station below reservoir, near Mackay. Figures given herein represent 

usable contents.

Cooperation.--Gage readings and capacity table furnished by Water District No. 27.

Contents, In acre-feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(*)

(t)

(*)

Oct.

448

448

448

448

448

459

459

470

470

470

470

470

474

474

481

481

481

488

488

525

547

558

558

569

580

922

673

603

626

580

580

10.22

631

+183

Nov.

673

1,240

1,520

1,810

2,090

2,350

2,520

2,840

3,110

3,300

3,580

3,780

3,990

4,250

4,470

4,690

4,880

5.070

5,320

5,610

5,900

6,140

6,390

6,640

6,910

7,130

7,230

7,560

7,840

8.070

29.14

8,210

+7,579

Dec.

8.510

8,590

8,790

9,030

9,230

9,470

9,600

9,890

10,110

10,340

10,540

10,710

10,950

11,180

11,360

11,570

11,760

11,950

12,160

12,380

12,600

12,740

13,030

13,400

13,770

13,800

13,950

14,100

14,370

14,480

14.690

38.76

14,790

+6,580

Jan.

14.860

15*, 170

15,350

15,470

15,600

15,830

15,990

16,150

16,310

16,470

16,630

16,710

16,910

17,080

17,320

17,450

17,570

17,740

17,910

18,030

18,200

18,370

18,460

18,580

18,670

18,890

19,060

19,230

19,280

19.410

44.48

19,480

+4,690

Feb.

19,580

19,670

19,760

19,940

20,030

20,130

20,250

20,340

20,490

20,660

20,750

20,840

20,930

21,070

21,210

21 , 300

21,390

21,480

21,620

21,760

21,810

21,950

22,000

22,140

22,240

22,330

22,430

22,520

22,620

47.94

22,660

+3,180

Mar.

22.710

22,810

22,930

23,020

23,100

23,180

23,290

23,390

23,490

23,510

23,590

23,690

23,840

23,900

23,980

24,080

24,130

24,180

24,330

24,460

24,580

24,680

24,940

25,240

25,400

25,500

25,710

25,790

25,910

25,960

26.100

51.40

26,120

+3, 460

Apr.

26.140

26,220

26,330

26,380

26,460

26,520

26,600

26,700

26,750

26,860

26,950

26,980

27,070

27,150

27,280

27,370

27,390

27,440

27,600

27,710

27,820

28,250

28,340

28,580

28,910

29,240

29,570

30,020

30,470

50,640

55.66

30,770

+4,650

May

50.930

51,580

31,610

32,080

32,450

32,890

33,370

33,720

34,200

34,680

35,170

35,660

35,960

35,900

35,660

35,410

34,920

34,500

34,200

34,200

34,680

35,410

36,770

37,640

38,660

39,690

40,480

41,000

41,270

41,400

41,530

64.53

41,710

+30 , 940

June

41,800

42.540

42,270

42,340

42,070

41,800

41,270

40,350

38,920

38,300

37,390

37,640

36.890

36,890

37,140

37,900

38,530

38,790

39,050

39,430

40,540

40,800

41,140

41,600

41,800

42,070

42,140

42,200

42,340

42,270

64.95

42,270

+560

July

42.270

42,070

41,800

41,530

41 , 330

41,070

40,740

40,610

40,220

39,950

39,500

39,180

38,660

38,150

37,640

37,140

36,640

35,410

34,560

33,480

32,780

32,080

31,270

30,470

29,570

28,910

28,090

27,390

26,640

26,220

25.710

50.73

£5,430

-16,840

Aug.

25,500

24 , 990

24,680

24,280

23,440

22,910

22,140

21,580

20,930

20,210

19,580

18,890

18,160

17,570

16,960

16,230

15,600

15,060

14,560

14,140

13,770

13,400

13,040

12,810

12,600

12,340

12,130

11,950

11,780

11,620

11,480

33.95

11,290

-14,140

Sept.

11,180

10,910

10,580

10,380

10,340

10,110

9.980

9,980

9,980

10,050

10,050

10,130

10,110

10,130

10,250

10,410

10,510

10,650

10,580

10,540

10,510

10,510

10,640

10,640

10,710

10,680

10,580

10,410

10,310

10,180

32.17

10,090

-1,200

Calendar year 1955.................... * -2,670

Water year 1955-56.................... * +9,642

* Gage height, in feet, Interpolated to midnight, at end of month.

t Contents, In acre feet. Interpolated to midnight, at end of month.

t Change in contents, in acre-feet.

Note. Contents as given are computed from once-daily staff-gage readings made betwee

p .m.
100 MUD LAKE-LOST RIVER BASINS

Sharp ditch near Mackay, Idaho

Location.--Lat 43°57', long 113°39', in sec. 7, T. 7 N., R. 24 E., on left bank 1,600 ft 

downstream from head of ditch, three-quarters of a mile downstream from Mackay Reservoir, and 3f miles northwest of Mackay.

Records available. June 1912 to October 1914, March 1919 to September 1956 (seasonal 

records only 1912-14, 1919-20, 1923-26, 1930, 1937).

. Water-stage recorder and sharp-crested weir. Altitude of gage is 5,980 ft (from 

topographic map). Prior to Oct. 1, 1936, and June 24, 1938, to Apr. 24, 1939, staff

f

ge. and Oct. 1, 1936, to June 23, 1938, water-stage recorder, at several sites 

,300 to 1,600 ft upstream at various datums.

Extremes. 1912-14. 1919-56: 

times most years.

Maximum daily discharge, 46 cfs May 30, 1951; no flow at

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

poor. Sharp ditch diverts from east side of Big Lost River in SE£ sec. 12, T. 7 N., 

R. 23 E., half a mile below Mackay Reservoir and 1 mile above station on Big Lost 

River below Mackay Reservoir, near Mackay. Water used for irrigation northwest of 

Mackay and above Streeter ditch. Hintze ditch, which diverts from Sharp ditch above 

station, was reported by watermaster to have carried 121 acre-ft during year (5 in 

June, 104 in July, and 12 in August).

Cooperation. Water-stage recorder inspected by employees of Water District No. 27.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

8.9

T7T

8.2

8.4

6.2

8.4

8.9

8.6

7.8

7.4

6.6

4.2

3.9

3.9

3.7

3.5

4.0

5.0

4.8

4.6

3.9

2.5

2.3 

4.3

3.0

2.5

*4.1

1.7

1.6

1.2

1.0

152.2

4.91

302

Nov.

0.8

.7

.7

.7

.6

.8

1.1

.8

.8

1.7

1.4

1.2

.9

.9

.9

.9

.9

.8

.5

75

.5

.5

.5 

.5

.5

.5

.5

.5

.5

.5

22.6

0.75

45

Dec.

0.5

.5

.5

.5

.5

*.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5 

.5

.5

.5

.5

.5

.5

.5

.5

15.5

O.50

31

Jan.

0.6

.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

18.6

0.60

37

Feb.

~60.6

.6

.6

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.8

.8

.8

.8

.8

.8

.8

.8

.8 

*.8

.8

.8

.8

.8

.8

21.4

0.74

42

Mar.

> 0.8

> .6

h20.7

0.67

41

Apr.

~30.3

.3

.3

.3

.3

.4

.7

.7

.6

.6

.6

.8

.8

.5

.8

.8

4.7

6.8

9.2

11

10

10 

*11

11

12

T?

12

12

12

142.8

4.76

283

May

12

13

13

12

12

12

12

12

12

12

12

14

13

10

13

15

TI

14

14

14

*14

14

14 

15

10

5.5

8.2

9.2

8.4

7.4

7.4

368.1

11.9

730

June

10

T3

14

20

24

24

25

26

29

32

33

32

32

33

33

33

33

33

34

3T

*28

28

27 

27

26

26

31

34

34

33

838

27.9

1,660

July

32

32

33

33

33

33

32

31

31

32

31

31

31

30

30

30

30

31

32

33

32

30

28 

»27

25

26

27

25

24

20

12

907

29.3

1,800

Aug.

9.7

6.4

675

14

18

20

21

23

2?

21

19

17

17

17

20

22

22

21

21

20

19

18

17 

15

13

13

14

13

12

*13

14

518.6

16.7

1,030

Sept.

13

13

14

14

13

13

13

13

13

13

13

13

13

11

13

16

TS

12

10

2.9

1.3

2.3

2ft

5.5

7.9

10

9.2

6.7

4.2

301.3

10.0

598

Calendar year 1955 : Max 35 Min 0 Mean 7.15 Ac-ft 5,180

Water year 1955-56 : Max 34 Min - Mean 9.09 Ac-ft 6,600

* Discharge measurement made on this day.

Note. No gage-height record No v. 2-4, 11, 12, Nov. 14 to Dec. 5, Dec. 7 to Jan. 25, Jan. 27 to 

Feb. 23, Feb. 25 to Apr. 1; discharge interpolated or estimated on basis of probable gate changes, 

3 discharge measurements, discharge for adjacent periods, and records for Big Lost River below 

Mackay Reservoir.
MUD LAKE-LOST RIVER BASINS 101

Big Lost River below Mackay Reservoir, near Mackay, Idaho

Location. Lat 43°56' , long 113°38', in sec. 18, T. 7 N., R. 24 E., on left bank 450 ft 

downstream from Oleson suspension bridge, 1 mile downstream from head of Sharp ditch, 

If miles downstream from Mackay Reservoir, and 2f miles northwest of Mackay,

Drainage area. 813 sq mi.

Records available. December 1903 to August 1906 and May 1912 to March 1915 (published 

as "near Mackay"), January 1919 to September 1956.

Gage. Water-stage recorder. Datum of gage is 5,946.39 ft datum of 1929, supplementary 

adjustment of 1947. Prior to May 12, 1912, and June 5, 1912, to Apr. 28, 1913, staff 

gages at sites within 1 mile upstream at different daturas. May 12 to June 4, 1912, 

staff gages at site 1? miles upstream (above Sharp ditch) at different datums. 

Apr. 29, 1913, to Mar. 15, 1915, staff gage at site 1 mile downstream (below Streeter 

ditch) at different datum.

Average discharge. 40 years (1904-5, 1912-14, 1919-56), 279 cfs (202,000 acre-ft per 

year).

Extremes.--Maximum discharge during year, 2,530 cfs June 3 (gage height, 5.63 ft); minimum, 33 cfs Oct. 26 (gage height, 1.42 ft).

1903-6, 1912-15, 1919-56: Maximum discharge, 2,990 cfs June 10, 1921 (gage height, 

5.79 ft); minimum, 18 cfs Nov. 1, 1934; minimum gage height, 1.23 ft Nov. 5-8, 1926.

Remarks. Records excellent. Sharp ditch (see preceding page) is only diversion between 

station and reservoir; about 9,000 acres of land are irrigated by diversions from 

river and tributaries above reservoir. Plow regulated by Mackay Reservoir (see p. 99).

Cooperation. Water-stage recorder inspected by employees of Water District No. 27. 

Revisions (water years). WSP 1347: 1904-6.

Rating table, water year 1955-56 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used June 3 to Aug. 20)

1.4

1.5

1.6 

1.8 

2.1

60

100

194

2.5 

3.0 

4.0 

5.0 

5.7

350

610

1,250

1,980

2,510

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

167

170

167

163

167

167

167

170

170

170

163

167

167

167

170

170

170

170

167

174

177

180

180

180

1OO

133

»255

204

201

198

145

5,316

171

10,540

Nov.

52

44

47

49

52

54

55

58

60

60

60

62

64

65

65

69

69

57

43

44

44

44

46

46

47

49

49

50

52

54

1,610

53.7

3,190

Dec.

54

55

55

55

57

»57

58

58

58

58

60

60

60

60

62

62

62

62

64

65

65

65

71

71

71

71

71

71

71

71

II

1,953

63.0

3,870

Jan.

73

73

73

74

76

76

76

76

78

78

80

80

80

82

82

82

82

82

85

85

85

87

87

87

*87

Si

89

89

89

89

89

2,540

81.9

 5,040

Feb.

89

91

91

91

91

91

91

91

91

93

93

93

93

93

93

93

93

93

93

96_

96

96

96

»96

96

96

96

96

96

2,707

93.3

5,370

Mar.

96

96

96

96

98

98

98

98

98

100

100

100

1OO

100

100

103

103

103

103

103

106

108

111

114

114

114

111

111

114

114

114

3,220

104

6,390

Apr.

114

114

114

114

114

114

»114

114

114

114

117

117

117

117

117

117

117

114

108

108

106

106

106

*106

108

108

108

108

111

111

3,367

112

6,680

May

111

114

114

117

117

120

122

122

122

125

125

159

218

244

322

456

500

544

616

664

»730

952

1,280

1,620

1,890

2,000

2,100

»2,190

2,200

2,220

2,240

24,454

789

48,500

June

Z,3OO

2,420

2,500

2,470

2,400

2,350

2,260

2,220

2,180

2,160

2,140

2,140

1,990

1,750

1,580

1,360

1,260

1,110

959

917

*880

868

802

820

850

868

874

880

910

924

47,142

1,571

93,500

July

910

880

844

802

778

766

754

748

754

790

844

880

862

850

838

844

886

910

904

892

S74

868

868

»856

844

832

826

808

748

706

688

25,654

828

50,880

Aug.

140" 670

616

640

640

658

646

640

622

610

594

577

555

560

582

566

500

450

440

416

387

359

337

324

319

310

306

278

 255

270

306

15,073

486

29,900

Sept.

324

31?

315

274

233

204

198

198

198

198

198

198

184

144

114

125

131

167

198

201

187

184

180

157

174

229

251

255

259

259

6,256

209

12,410

Calendar year 1955 : Max 1,120 Mln 43 Mean 231 Ac-ft 167,200

water year 1955-56: Max 2,5oo Mln 43 Mean 381 Ac-ft 276, 3OO

Discharge measurement made on this day.
102 MUD LAKE-LOST RIVER BASINS

Big Lost River near Arco, Idaho

Location.--Lat 43°35', long 113°16', near line between sees. 17 and 20, T. 3 N., R. 27 E 

on right bank a quarter of a mile downstream from head of box canyon, 0.4 mile downstream from slough entering from left bank, and 4 miles southeast of Arco.

Drainage area. 1,410 sq mi, approximately. 

Records available. August 1946 to September 1956.

Gage. Water-stage recorder. Prior to Oct. 14, 1952, at site 800 ft upstream at different datum.

Average discharge. 10 years, 61.1 cfs (44,230 acre-ft per year).

Extremes .--Maximum discharge during year-, 1,050 cfs Mar. 23 (gage height, 6.32 ft); 

minimum, 4.2 cfs May 20 (gage height, 2.38 ft).

1946-56: Maximum discharge, that of Mar. 23, 1956; minimum, 0.4 cfs June 1,2, 

1955 (gage height, 2.10 ft).

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

which are poor. Station is below all large diversions for irrigation in Big Lost 

River Valley. Flow regulated by Mackay Reservoir (see p. 99). About 42,000 acres 

of land irrigated by diversions from river and tributaries abt>ve station.

Rating table, water year 1955-56, except periods of Ice effect (gage

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

(Shifting-control method used Oct. 1 to Dec. l)

2.5

2.6 

2.8 

3.0 

3.2

3.3

5.0

3.5 

4.0 

4.5 

5.0 

5.5 

6.2

75

153

258

415

615

980

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

8.5

10

10

10

8.2

9.1

9.1

9.7

10.

11

10

9.1

9.7

10

11

11

10

10

9.4

10

11

11

11

11

11

*11

11

12

12

13

14

323.8

10.4

642

Nov.

14

14

14

14

14

13

12

12

11

12

10

10

10

10

8_

9

10

11

12

14

16

15

14

14

14

15

16

16

16

16

386

12.9

766

Dec.

16

15

14

13

*14

15

15

13

14

15

14

15

15

12

13

14

15

15

16

16

17

22

58

284

426

149

89

62

48

40

35

1,519

49.0

3,010

Jan.

30

28

26

25

24

22

21

21

21

»20

20

20

19

19

19

18

18

18

17

17

17

16

16

15

15

14

13

13

12

12

12

578

18.6

1,150

Feb.

12

13

13

14

15

15

15

15

15

15

15

15

15

15

15

14

13

12

12

12

14

14

14

13

12

11

10

To

10

388

13.4

770

Mar.

*10

10

12

12

12

10

10

11

11

11

10

10

1111

11

11

15

25

50

150

170

280

606

785

498

373

*266

162

130

115

115

3,913

126

7,760

Apr.

115

101

89

75

59

54

48

43

39

36

36

42

42

47

48

52

62

84

96

101

104

108

110

128

135

137

142

146

146

142

2,567

85.6

5,090

May

*135

126

126

126

130

121

118

108

87

69

49

32

15

14

11

8.5

7.9

8.2

8.5

6.2

*4.8 676-

9.1

75

153

207

258

*313

370

412

466

3,580.8

116

7,100

June

522

*584

656

765

870

926

962

944

898

850

810

790

750

700

597

502

454

384

307

242

*194

172

153

123

96

82

65

53

45

11

14,537

485

28,830

July

38

38

38

34

54

45

35

33

33

34

37

34

34

36

37

36

35

36

36

36

34

36

37

36

34

*34

42

48

36

38

36

1,150

37.1

2,280

Aug.

34

32

33

34

32

32

30

29

29

30

32

33

32

31

30

30

39

61

42

42

41

*40

36

33

32

33

32

34

33

31

30

1,062

34.3

2,110

Sept.

28

26

27

27

28

31

36

38

42

42

50

59

5$

54

51

48

44

42

33

38

38

39

38

39

36

33

26

25

25

23

1,129

37.6

2,240

Calendar year 1955: Max 426 Mln 0.5 Mean 15.3 Ac-ft 11,060

Water year 1955-56: Max 962 Mln 4.8 Mean 85.1 Ac-ft 61,750

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 2, 11-26, Dec. 2-23, 29, 30, Jan. 1, 3, 7-10, 

Jan. 14, 17-20, Jan. 24 to Mar. 22 (no gage-height record Feb. 3-29, Mar. 7-16; discharge estimated 

on basis of weather records, records for adjacent periods, and for nearby streams).
RILEY CREEK BASIN 103

Brailsford ditch hear Hagerman, Idaho

 Location. Lat 42°46'00", long 114"51"50", in N|W£ sec. 6, T. 8 S., R. 14 E., on left 

bank 250 ft upstream from road bridge, 0.5 mile downstream from point of diversion 

at Lewis Spring, and 4.2 miles southeast of Hagerman.

Records available. June 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,000 ft (from topographic map).

Average discharge. 5 years, 7.41 cfs (5,360 acre-ft per year).

Extremes.--1951-56: Maximum daily discharge, 16 cfs June 23-26, July 19-26, 30,

Aug. 19, 20, 1951; no flow at times during March, April, September, and October 1952.

Remarks. Records good except those below 3 cfs and those for periods of no gage-height 

record, which are fair. Brailsford ditch diverts from Lewis Spring for irrigation.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

8.3

8.5

8.5

8.5

8.5

8.3

8.3

8.3

8.3

8.3

8.5

8.3

8.3

8.5

8.3

8.3

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8.0

7.5

7.5

7.5

7.2

173

9.4

_9.«.8

255.2

8.23

506

Nov.

10

*10

8.8

7.5

775

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

246.3

8.21

489

Dec.

9.0

970

9.0

9.0

7.0

*5.

5.

5.

5.

5.

5.0

5.0

5.0

5.0

4.8

4.8

4.6

4.6

4.4

4.4

4.4

3.0

3.0

3.0

3.0

3.0

3.0

2.9

279

2.9

2.9

151.6

4.89

301

Jan.

2.9

279

2.8

2.8

2.8

2.8

2.8

2.8

*2.8

2.8

2.8

2.8

2.8

2.4

2.4

2.4

2.3

273

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.4

78.4

2.53

156

Feb.

2.4

274

2.

2.

2.

2.

2.

2.

2.

2.

2.

2.

2.

2.

2.

2.

2.

2.

2.

*2.5

2.4

2.5

2.5

2.6

2.8

2.8

2.8

2.8

2.8

-

72.4

2.50

144

Mar.

2.8

278

2.9

2.9

2.9

3.1

3.2

.2

.0

.8

.8

.8

.6

.6

.6

.6

.6

.6

.4

.6

.6

.6

.6

.4

.4

.4

.2

.2

.2

.2

.2

126.8

4.09

252

Apr.

4.2

*4.3

4.6

4.6

4.6

4.6

4.6

4.6

3.0

*.9

.4

.4

4.2

10

10

10

10

10

10

10

11

11

11

11

11

11

11

12

12

12

228.0

7.60

452

May

*12

12

12

12

12

12

12

12

12

12

12

12

12

11

11

11

11

11

11

11

11

11

11

11

11

11

11

*11

11

10

To

352

11.4

698

June

8.9

10

10

9,8

9.4

9.8

9.8

9.

9.

9.

9.

*9.

9.

9.

9.1

8.8

8.8

8.5

8.5

8.5

8.5

8.5

8.5

8.5

8.5

8.5

8.3

9.4

10

10

274.4

9.15

544

July

10

10

10

10

9.6

15

14

14

14

14

14

14

14

14

14

14

14

14

12

14

14

14

14

14

13

*13

14

13

13

13

14

407.6

13.1

808

Aug.

14

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

*13

13

13

13

13

13

13

13

13

13

13

404

13.0

801

Sept.

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

12

12

12

12

12

12

12

12

*12

12

12

12

12

12

376

12.5

746

Calendar year 1955: Max 14 Mln 0.6 Mean 8.19 Ac-ft 5,930

Water year 1955-56: Max 15 Min 0.4 Mean 8.12 Ac-ft 5,900

* Discharge measurement made on this day.

Note. No gage-height record Nov. 17 to Dec. 5, Dec. 22 to Jan. 8, Apr. 12, July 24, 25; discharge 

estimated on basis of records for Riley Creek below Lewis Spring and other Snake River springs.
104 RILEY CREEK BASIN

RIley Creek below Lewis Spring, near Hagerman, Idaho

Location. Lat 42°45'50", long 114°51'30", in SE^NWj sec. 6, T. 8 S., R. 14 E., on left 

bank 560 ft downstream from confluence of Riley Creek springs and Lewis Spring, an 

eighth of a mile downstream from U. S. Fish Hatchery, and 4 miles southeast of 

Hagerman.

Records available. June 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,955 ft (from topographic map). 

Prior to June 17, 1955, at site 1,200 ft downstream at different datum.

Average discharge. 5 years, 64.1 cfs (46,410 a.cre-ft per year).

Extremes.--1951-56: Maximum daily discharge, 78 cfs Nov. 14, 15, 20-23, 1953; minimum 

daily, 50 cfs July 7, 21, 22, 29, 30, 1956.

Remarks. Records good. Flow at this station plus flow of Brailsford ditch (see preceding page) gives total flow from Riley and Lewis Springs plus small intervening 

inflow. Flow diverted from Lewis Spring to Brailsford ditch for irrigation. Slight 

regulation by ponds at fish hatchery.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge. In cubic feet per second) 

(Shifting-control method used June 7-23)

1.4

1.5

1.6

1.7

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

60

60

59

60

59

59

60

60

60

60

59

59

59

59

59

59

59

59

59

58

58

58

58

58

58

58

58

58

56

5T

56

1,818

58.6

3,610

Nov.

56

*5T

58

59

59

59

59

58

58

58

59

60

60

60

60

60

60

60

59

60

59

58

58

58

58

58

57

57

57

57

1,755

58.5

3,480

Dec.

57

57

57

57

60

 61

61

61

61

61

61

60

60

61

61

61

61

61

62

61

61

62

63

63

63

62

61

61

61

61

62

1,882

60.7

3,730

Jan.

61

61

61

61

61

61

61

61

 61

61

61

61

61

61

61

61

61

61

61

61

61

62

62

62

62

61

61

61

61

61

61

1,895

61.1

3,760

Feb.

61

61

61

61

61

61

61

61

61

61

61

61

61

61

60

60

60

60

60

 60

61

61

61

61

61

61

60

61

£1

1,763

60.8

3,500

Mar.

62

62

62

62

62

62

62

62

62

60

60

60

60

61

61

61

61

61

62

61

61

61

61

61

61

61

61

61

61

61

61

1,897

61.2

3,760

Apr.

61

*61

61

61

61

61

62

62

63

64

65

65

63

56" 56

56

56

56

56

57

57

57

57

57

57

57

57

57

57

57

1,773

59.1

3,520

May

*57

56

5f

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

 56

56

56

56

1,737

56.0

3,450

June

57

56

56

56

56

56

54

54

54

55

55

 56

56

56

56

56

56

56

56

56

56

56

56

55

56

56

56

55

55

54

1,668

55.6

3,310

July

54

55

BT

53

54

51

50

52

52

52

52

53

51

51

52

51

51

51

53

51

50

50

51

51

51

*51

51

51

50

50 

51

1,600

51.6

3,170

Aug.

51

53

54

54

54

54

53

54

54

54

53

54

54

54

54

54

54

54

54

54

 54

54

54

54

54

54

54

54

54

54 

54

1,668

53.8

3,310

Sept.

54

54

54

54

54

54

54

54

54

54

54

54

53

54

54

53

53

52

52

53

53

53

52

52

52

*53

53

53

52

51

1,596

53.2

3,170

Calendar year 1955: Max 70 Mln 51 Mean 60.3 Ac-ft 43,640

Water year 1955-56: Max 65 Mln 50 Mean 57.5 Ac-ft 41,770

Discharge measurement made on this day.
SNAKE RIVER MAIN STEM 105

Snake River below Lower Salmon Palls, near Hagerraan, Idaho

Location Lat 42 S 51'36", long 114 S 54'42" ( In lot 3, sec. 2, T. 7 S., R. 13 E., on right 

bank half a mile downstream from Lower Salmon Falls powerplant, 1 mile upstream from 

Malad River, and 2^ miles north of Hagerman.

Records available. October 1937 to September 1956. Monthly discharge only for October 

1937, published in WSP 1317.

Gage . Water-stage recorder. Datum of gage is 2,727.7 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. Prior to Jan. 3, 1950, at site 340 ft upstream at same datum.

Extremes. Maximum discharge during year, 28,100 cfs Mar. 31 (gage height, 14.76 ft); 

minimum, 1,010 cfs Dec. 16 (gage height, 3.09 ft); minimum daily, 5,720 cfs July 13.

1937-56: Maximum discharge, 29,800 cfs June 27, 1950 (gage height, 15.60 ft); 

minimum, probably less than 100 ofs Jan. 10, 11, 1950, when river was below intake 

pipes; minimum daily, 3,970 cfs July 8, 1951.

Remarks. Records excellent. Flow regulated by Lower Salmon Falls powerplant and many 

reservoirs above station. Practically entire flow at Milner diverted during irrigation season; only minor diversions below Milner.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

6.4 

7.0 

8.0

5,720

6,920

9,130

10.0

12.0

15.0

14,000 

19,600 

28,9OO

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

7,82O

7,170

7,520

,340

,420

,580

,350

,680

,580

,540

,480

,580

8,240

8,230

*8,670

8,340

8,180

8,170

7,530

7,620

7,190

7,950

6,950 

7,580

7,080

7,720

7,560

7,540

7,660

7,740

7,920

237,910

7,675

471,900

Nov.

7.96O

*8,070

7,980

8.190

8,030

7,780

7,690

7,200

7,560

7,360

7,120

7,180

7,040

7,140

7,340

6,960

6,650

7,080

7,400

7,160

7,270

6,950

7,800 

6,930

6,880

7,310

7,340

7,210

6,940

7,120

------

220,640

7,355

437,600

Dec.

7,190

7,160

7,O20

7,040

6,840

6,940

7,360

7,020

6.9OO

7,OOO

7,020

7,110

7.06O

7,030

6,960

6,440

7,120

7,410

7,670

7,620

7,58O

8,080

8.290 

7,530

7,430

7,620

7,280

7,640

8,010

7,720

7,940

227,030

7,324

450,300

Jan.

8,170

8,530

8,260

8,660

8,740

8,720

8,580

9,100

8,690

8,750

8,600

9,100

8,910

9,080

9,600

9,200

9,620

8,620

8,980

8,940

9,510

9,460

9,860 

9,940

*10, 400

10,200

11.000

9,980

9,600

10,500

10,700

288,000

9,290

571,200

Feb.

9,930

10,100

10,000

10,500

10,500

10,300

10,500

10,300

10,300

10,40O

10,300

10,400

10,200

10,200

10,100

10,000

9,860

9,890

9.780

10,300

9,980

10,200

10,800 

10,500

10,700

10,800

11,000

11,000

11,400

-

------

300,240

10,350

595,500

Mar.

11,500

11,900

11 , OOO

10,9OO

11,300

11,700

11,1OO

11,400

11,2OO

11 , 100

1O.5OO

10,900

10 , 300

9.720

10,100

10 , 100

10,700

10 , 700

11,000

*12,100

11 , 300

11,700

12,000 

12,200

13,800

15,200

13,600

14,100

14,400

15,000

17,600

370,120

11,940

734,100

Apr.

18,400

18,800

18 , 300

18,000

16,200

16,200

15,700

13,800

15,400

12,400

11,100

11,100

12,200

12,300

11,000

10,600

11,200

8,780

9,060

8.100

8,650

11,300

12,900 

13,100

13,200

15,400

16,600

17,000

14,800

16,000

407,590

13,590

808,400

May

15,900

*16,500

15,700

14,200

15,300

13,700

15,400

13,600

11,OOO

11,300

12,300

12,900

12,500

12,900

13,600

13,000

11,100

10,300

10,900

7,670

7,540

6,870

6,210 

6,780

6,700

8,800

9,320

14,700

*20,600

24,500

26,200

397,990

12,840

789,400

June

26.100

*25,400

25,300

25,800

24,900

24,800

24,300

23,900

24,000

21,600

*18,600

17,100

17,900

17,900

18,200

17,600

18,200

13,100

15,300

17,700

21,900

21,000

16,800 

15,500

9,640

10,200

8,880

8,310

7,950

7.580

------

545,260

18,180

*1,082

July

6,340

6,930

5,990

6,110

6,560

6,740

6,460

6,700

6,650

6,540

6,060

6,290

5,720

6,660

6,540

6,800

6,620

6,900

6,500

6,220

6,540

6,910

6,710 

6,480

6,950

7,020

6,770

6,890

6,840

7,250

7.800

205,070

6,615

406,800

Aug.

7,O20

7,240

7,360

7,160

7,100

7,190

7,170

7,050

7,180

6,830

7,110

7,540

6,880

7,490

7,380

7,040

7,300

7,100

6,980

7.800

*7,090

7,270

*6, 650 

6,600

7,180

6,870

7,430

7,220

7,350

7,340

7,470

222,170

7,167

440,700

Sept.

,3OO

,370

,160

,46O

,450

,740

,420

,410

,600

,620

,730

,920

,920

,930

,960

,800

,940

8,040

8,010

7,820

7,920

7,900

8,080 

8,180

*8,410

7,860

7,760

7,840

8,000

7,900

------

235,450

7,782

463,000

Calendar year 1955: Max 12,300 Mln 5,790 Mean 7,602 Ao-ft 5,504,000

Water year 1955-56: Max 26,200 Mln 5,720 Mean 9,988 Ac-ft 7,251,000

* Discharge measurement made on this day.

* Expressed In thousands .

467239 O-58 8
106 MALAD RIVER BASIN

Big Wood River near Ketchum, Idaho

Location. Lat 43°48', long 114 0 26', in sec. 4, T. 5 N., R. 17 E. , on left bank half a 

mile upstream from North Fork and 8 miles northwest of Ketchum.

Drainage area. 137 sq mi.

Records available. May 1948 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 6,240 ft (from topographic map). Prior 

~1fo Nov. 7, 1950, staff gage at site 560 ft upstream at different datum.

Average discharge.--8 years, 171 cfs (123,800 acre-ft per year).

Extremes.--Maximum discharge during year, 1,620 cfs May 24 (gage height, 6.44 ft); minimum, 15 cfs Dec. 20 (gage height, 1.75 ft).

1948-56: Maximum discharge, that of May 24, 1956; minimum recorded, 14 cfs sometime during period Jan. 1-22, 1951 (gage height, 1.52 ft).

Remarks. Records excellent except those for periods of ice effect, which are fair. Minor 

diversions for nonconsumptive uses on Boulder Creek; water returned to stream above 

station. About 97 acre-ft of storage in ponds on Prairie Creek; diversion point 

below station for irrigation.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

2.0 

2.2 

2.5

3.0 185

3.5 

4.0 

5.0 

6.5

328

520

955

1,650

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Ttotal

Mean

Cfsm

In.

Ac-ft

Oct.

57

57

56

56

61

58

59

58

57

58

61

58

57

56

56

56

54

54

54

58

65

62

58

56

*56

61

57

59

57

65

54

1,791

57.8

0.422

0.49

3,550

Nov.

57

53

68

62

61

57

58

57

58

71

68

56

54

68

42

45

72

80

80

105

95

74

65

82

71

72

64

57

59

54

1,965

65.5

0.478

0.53

3,900

Dec.

*57

46

33

37

39

64

65

58

68

61

71

68

45

30

38

62

71

58

53

38

48

45

58

86

85

95

83

65

50

51

68

1,796

57.9

0.423

0.49

3,560

Jan.

59

59

54

62

62

59

50

50

46

57

59

57

*56

46

54

56

51

43

46

50

52

53

52

36

5JL

39

42

b38

b35

b34

b33

1,521

49.1

0.358

0.41

3,020

Feb.

b32

b38

b40

645

b48

b45

645

b42

44

47

48

48

47

44

45

b35

41

45

47

47

45

45

*47

46

46

45

44

44

46

1,281

44.2

0.323

0.35

2,540

Mar.

45

45

45

45

43

33

42

44

44

43

b35

b37

44

44

42

44

45

44

48

52

54

59

65

*68

80

82

74

66

65

65

66

1,608

51.9

0.379

0.44

3,190

Apr.

65

62

61

62

68

68

68

66

69

88

107

105

 110

127

155

181

209

250

328

408

488

569

574

*540

496

504

488

480

476

456

7,728

258

1.88

2.10

15,330

May

448

492

520

564

560

548

536

528

492

456

448

400

367

367

420

536

672

788

910

986

1,120

1,270

* ,430

,510.

,470

,350

,310

,210

,180

1,200

1,270

25,358

818

5.97

6.88

50,300

June

,590

,300

,230

,130

,080

946

860

847

910

968

1,010

964

*928

896

852

766

676

621

637

681

613

569

560

560

552

540

540

548

552

512

24,238

808

5.90

6.58

48,080

July

472

444

404

382

370

370

367

360

360

360

356

346

335

318

298

283

267

*255

250

244

247

235

222

214

207

204

197

192

190

176

9,106

294

2.15

2.47

18.060

Aug.

170

T63

159

157

150

148

146

144

138

134

132

129

127

125

129

123

119

116

114

112

112

*109

107

105

105

107

107

107

102

98 

96

3,890

125

0.912

1.06

7,720

Sept.

95

93

93

91

90

88

90

88

86

90

88

86

85

83

83

82

80

80

80

80

80

82

82

80

78

*78

77

78

80

77

2,523

84.1

0.614

0.68

5,000

Calendar year 1955: Max 667 Mln 30 Mean 118 Cfsm 0.861 In. 11.65 Ac-ft 85,090

Water year 1955-56: Max 1,510 Mln 30 Mean 226 Cfsm 1.65 In. 22.48 Ac-ft 164,200

Peak discharge (base, 400 cfs). Nov. 17 (7 p.m.) 456 cfs (3.80 ft), result of release from Ice

or snow Jam upstream; Apr. 22 (8 to 9 p.m.) 654 cfs (4.32 ft); May 24 (12 p.m.) 1,620 cfs (6.44 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.
MALAD RIVER BASIN 107

Warm Springs Creek at CJuyer Hot Springs, near Ketchum, Idaho

Location. Lat 43°41', long 114°25', In NE^ sec. 15, T. 4 N., R. 17 E., on left bank at 

Guyer Hot Springs, 2.1 miles upstream from mouth and 2.2 miles west of Ketchum.

Drainage area. 96 sq mi, approximately.

Records available. November 1940 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 5,901.7 ft above mean sea level (river 

profile survey). Prior to Mar. 7, 1942, staff gage at same site and datum.

Average discharge.--15 years (1941-56), 85.9 cfs (62,190 acre-ft per year).

Extremes. Maximum discharge during year, 883 cfs May 25 (gage height, 4.02 ft); minimum, 

12 cfs probably Mar. 6 (gage height, 0.66 ft).

1940-56: Maximum discharge, that of May 25, 1956; minimum, 6 cfs Feb. 29, 1944 

(gage height, 0.55 ft), result of ice Jam upstream; minimum daily, 17 cfs Dec. 17, 

1946.

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

fair. Diversion's above station for irrigation of about 200 acres. Small diversion 

from Guyer Hot Springs for recreational purposes bypasses station.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

0.8

1.0 

l.Z 

1.4

2.3 

3.0 

4.0

171

301

536

876

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

TotaJ

Mean

Ac- ft

Oct.

30

30

29

2¥

31

30

31

31

30

30

32

31

31

30

30

30

30

30

29

29

35

35

31

30

*30

32

29

31

30

36

33

955

30.8

1,890

Nov.

31

27

34

34

34

32

32

32

32

41

38

30

28

30

25_

27

33

34

35

58

64

46

38

38

34

36

36

33

34

*33

1,059

35.3

2,100

Dec.

34

29

26

25

23

29

30

29

32

31

31

32

28

20

28

33

30

30

31

29

32

39

209

186

111

81

62

52

44

42

50

 1,488

48.0

2,950

Jan.

46

46

40

44

46

44

38

36

32

36

38

37

 36

32

36

35

33

31

31

34

34

34

34

31

26

29

30

28

27

25

Zi

1,073

34.6

2,130

Feb.

23

25

28

30

32

30

30

28

28

28

30

30

30

28

28

24

26

27

29

27

29

30

30

28

*29

29

29

28

29

822

28.3

1,630

Mar.

29

29

29

29

28

24

24

28

28

28

25

24

28

27

26

27

28

30

32

35

38

43

*49

64

93

~84 100

73

68

68

68

1,306

42.1

2,590

Apr.

68

66

62

66

76

76

74

73

79

106

126

122

134

150

191

235

240

254

304

343

383

417

403

366

*336

320

301

280

277

265

6,193

206

12,280

May

257

274

292

320

311

295

286

286

271

249

243

225

205

195

215

265

346

444

519

587

628

662

730

835

808

*767

757

709

692

686

699

14,058

453

27,880

June

lii

709

652

587

536

461

410

397

407

424

427

397

376

353

*330

298

263

243

233

238

220

203

193

189

182

175

171

167

167

160

10,311

344

20,450

July

150

144

136

126

122

119

115

111

109

107

104

102

98

94

90

86

82

79

*78

76

79

78

73

70

68

66

66

66

66

62

58

2,880

92.9

5,710

Aug.

58

57

56

54

53

53

54

54

52

51

51

49

48

48

49

48

46

46

48

46

46

*45

42

41

40

42

44

44

42

41

40

1,488

48.0

2,950

Sept.

40

40

40

40

40

40

40

40

40

42.

42

41

40

39

39

38

37

36

36

34

33

55

36

37

40

39

*38

40

40

40

1,163

38.8

2,310

Calendar year 1955: Max 276 Min 20 Mean 56.9 Ac-ft 41,210

Hater year 1955-56: Max 835 Min 20 Mean 117 Ae-ft 84,870

Peak discharge (base. 500 cfs).--Dec. 23 (11:30 a.m.) 373 cfs (2.55 ft); Apr. 22 (10 p.m.) 

451 cfs (2.78 ft); May 25 (1 a.m.) 883 cfs (4.02 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 6, 7, Dec. 28 to Jan. 12, Jan. 25 to Feb. 24, Feb. 27 to 

Mar. 22, July 14-17; discharge estimated on basis of recorded range in Stage, weather records, and 

records for nearby streams In Malad River basin.
108 MALAD RIVER BASIN

Big Wood Slough at Halley, Idaho

Location.--Lat 43°31 I 00", long 114 0 19'30", in see. 9, T. 2 N., R. 18 E., on left bank 

40 ft upstream from bridge on State Highway 22, an eighth of a mile northeast of Big 

Wood River, and an eighth of a mile southwest of Halley.

Drainage area. See Big Wood River at Hailey on following page. 

Records available.--June 1915 to September 1956.

Gage. Water-stage recorder. Datum of gage is 5,301.17 ft above mean sea level, prellmInary. Prior to Apr. 12, 1936, ataff gages at or near highway bridge, at same datum.

Extremes. Maximum discharge during year, 90 cfs May 24 (gage height, 3.36 ft); maximum 

gage height recorded, 3.91 ft Feb. 19 (ice Jam): minimum discharge, 0.3 cfs Nov. 26 

(gage height, 1.50 ft).

1915-56: Maximum discharge observed, 419 cfs June 6, 1921, from rating curve 

extended above 280 cfs; maximum gage height, 5.55 ft (top of ice in well) Jan. 20-23, 

1937; no flow at times in several years.

Remarks. Records good except those for Oct. 28 to Mar. 24, which are fair. Flow controlled at inoperative powerplant half a mile upstream to meet the requirements of 

Irrigation diversion and sewage dilution. Big Wood Slough is a natural channel of 

Big Wood River and its discharge plus the discharge of Big Wood River at Halley (see 

following page) is total discharge of river at this point.

Cooperation. Water-stage recorder Inspected by employees of Water District No. 7 AB.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

21

21

19

19

22

24

25

26

23

22

25

24

21

22

22

22

22

21

21

21

24

24

22

*23

26

15

2.1

1.5 **iT¥

1.6

1 *8

585.5

18.9

1,160

Nov.

1.6

1.6

1.8

1.8

2.0

2.7

2.6

2.6

2.5

2.0

1.8 1.8'

1.5

1.3

1.3

bl.3

1.3

1.4

1.4

1.6

1.7

1.3

1.1

1.0

T^

8.O

13

T3

12

*13

101.0

3.37

200

Dec.

14

14

b!2

bll

blO

12

14

b!3

15

16

17

18

19

b!5

b!5

17

19

18

20

18

18

26

44

*26

16

13

13

11

blO

alO

bll

505

16.3

1,OOO

Jan.

blO

blO

b9

bll

bll

all

alO

a9.5

a9

a9.5

a9.5

a9.5

*9.5

9.0

9.0

9.3

9.0

8.4

8.4

8.7

9.3

9.3

9.5

bS.O

b7.5

b7.5

8.0

b7.5

b7.0

b6.5

b6.0

276.4

8.92

548

Feb.

b6.5

b7.5

b8.0

b9.0

a9.0

a8.5

a8.5

a8.0

aS.O

aS.O

a8.5

a8.5

a8.5

a8.0

aS.O

a6.0

a6.0

a6.0

a6.O

a6.O

a6.0

*6.0

6.0

5.8

5.8

6.0

5.8

5.8

6.0

205.7

7.09

408

Mar.

6.0

6.2

6.2

6.5

6.2

b5.5

bS.O

5.8

6.2

6.0

b5.5

b5.0

b5.5

5.8

b5.5

5.6

6.2

6.2

6.7

7.1

7.3

7.9

*9.3

12

17

20

Is

17

16

16

17

276.2

8.91

548

Apr.

17

17

16

16

18

18

19

19

20

25

3O

31

34

34

35

35

36

37

34

30

25

23

22

20

*19

23

23

21

20

20

737

24.6

1,460

May

18

18

18

19

19

19

19

21

20

19

18

16

?0

34

36

37

44

48

42

42

41

42

44

58

72

*63

58

52

51

5O

52

1,110

35.8

2,200

June

62

59

53

49

46

40

25

27

26

25

26

25

23

*22

22

2O

17

24

46

49

47

43

44

44

42

41

41

41

41

40

1,110

37.0

2,200

July

38

36

35

33

33

32

30

28

27

28

28

27

26

25

23

21

20

*23

42

43

45

44

41

39

38

36

35

35

35

32

3O

1,008

32.5

2,OOO

Aug.

29

28

27

24

23

22

22

22

20

19

19

19

18

19

21

20

18

17

18

19

*17

16

14

li

14

15

16

16

14

13

13

585

18.9

1,16O

Sept.

12

12

12

12

11

10

10

10

10

11

11

9.8

9.5

9.0

8.7

8.1

7.9

7.6

776

7.9

8.1

9.3

a9.2

9.0

8.1

*8.1

8.4

9.3

8.7

7.9

283.2

9.44

562

Calendar year 1955: Max 46 Min 1.0 Mean 18.4 Ac-ft 13,32O

Water year 1955-56: Max 72 Min 1.0 Mean 18.5 Ac-ft 13,45O

* Discharge measurement made on this day.

** Field estimate made on this day.

a No gage-height record; discharge estimated on basis of records for Big Wood River at Halley. 

b Stage-discharge relation affected by Ice.

Note. Stage-discharge relation Indefinite Oct. 28 to Nov. 28; discharge computed on basis of 

recorder graph, formula for flow through culverts, and one field estimate.
MALAD RIVER BASIN 109

Big Wood River at Hailey, Idaho

Location. Lat 43°31', long 114°20', in SW£ sec. 9, T. 2 N. , R. 18 E., on left bank 35 ft 

downstream from bridge on State Highway 22, a quarter of a mile southwest of Hailey, 

and three-eighths of a mile upstream from Croy Creek.

Drainage area. 640 sq mi, approximately (total area above river and slough stations).

Records available.--July to December 1889, June 1915 to September 1956. Published as 

Wood River at Hailey in 1889.

Gage. Water-stage recorder. Datum of gage is 5,298.00 ft above mean sea level, unadjusted. Prior to Nov. 16, 1934, staff gages at bridge 35 ft upstream at different 

datums.

Average discharge. Average combined discharge of Big Wood River and Big Wood Slough, 

41 years, 425 cfs (307,700 acre-ft per year).

Extremes. Maximum discharge during year, 4,640 cfs May 24 (gage height, 6.62 ft); 

minimum, 26 cfs Feb. 20 (gage height, 0.71 ft).

1915-56 (river only): Maximum discharge, that of May 24, 1956; maximum gage 

height, 8.66 ft, present datum, June 12, 1921; practically no flow Sept. 15-23, 

Nov. 20, 22 23, 1931, Oct. 25, 1937.

1915-56 (combined): Maximum daily discharge, 4,500 cfs June 6, 7, 1938; minimum daily, 15 cfs Dec. 27, 1921.

Remarks. Records good. Water diverted around station through Big Wood Slough (see 

preceding page). Total flow of river at Hailey (combined flow of Big Wood River and 

Big Wood Slough) is given on following page. Diversions for irrigation of about 

10,300 acres above station. Flow bypasses station for irrigation of about 

1,800 acres. Storage above station is negligible.

Cooperation. Water-stage recorder inspected by employees of Water District No. 7 AB.

Rating tables, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used May 22, 23)

Oct. 1 to May 23 May 24 to Sept. 30

1.2 89

1.5 170

2.0 360

3.0

4.0 1,550

5.0 2., 340

6.7 4,020

0.9 195

1.1 243

1.5 405

2.0 685

3.0 1,340

4.0 2,080

5.0 2,930

6.3 4,280

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

117

117

111

111

117

119

119

114

111

109

114

114

111

111

109

107

107

104

109

111

119

125

119

*117

119

147

154

151

151

161

154

3,759

121

7,460

Nov.

151

136

161

161

15S

145

151

151

154

161

180

158

128

139

125

98

117

148

161

218

255

20T

167

170

164

154

145

142

*139

139

4,677

156

9,280

Dec.

145

131

114

107

89

122

125

109

128

122

125

136

133

b90

96

128

142

133

145

131

131

ISO

596

*690

TSo

409

373

278

226

218

259

6,271

202

12,440

Jan.

236

233

208

226

233

222

204

197

177

197

201

197

*201

184

190

194

180

167

167

170

177

177

180

148

b!20

b!30

142

b!30

b!20

bl!5

bllO

5,5^j

178

10,970

Feb.

b!05

b!25

b!40

b!50

161

b!50

b!50

b!45

b!40

b!40

148

148

148

139

142

bl!5

b!25

b!30

139

131

139

142

*142

133

139

139

136

133

139

4,013

138

7,960

Mar.

133

133

133

136

133

bllO

bllO

133

133

131

bl!5

bllO

131

125

122

125

128

131

136

148

158

173

*201

240

310

.369

339

306

306

306

314

5,578

180

11,060

Apr.

318

314

302

314

339

339

352

352

378

441

540

560

590

645

784

946

,000

,060

,240

,390

,540

,770

.850

,720

* ,620

.610

,570

,500

1,450

1,400

28,234

941

56,000

May

1,340

1,400

1,450

1,540

1,540

1,520

1,470

1,500

1,450

1,380

1,330

1,240

1,140

1.070

1,110

1,270

1,540

1,960

2,480

2,740

3,220

3,560

4,020

»4,280

3,710

3,970

3,600

3,390

3,480

3,660

3,580

70,940

2,288

140, 700

June

3.620

3,560

3,500

3,180

3,020

2,700

2,340

2,230

2,360

2,490

2,660

2,510

2,480

*2,440

2,310

2,080

1,730

1,560

1,600

1,730

1,550

1,370

1,370

1,370

1,390

1,340

1,370

1,370

1,420

1.510

63,960

2,132

126,900

July

.190

^160

,100

,070

,070

,060

,030

992

992

1,010

986

979

934

882

797

739

667

*601

560

543

538

516

477

46O

430

415

400

395

395

395

380

23,163

747

45,940

Aug.

355

337

329

307

296

296

289

281

274

320

324

311

304

311

329

311

300

292

289

292

*281

274

274

265

258

262

268

265

252

246

240

9,032

291

17,910

Sept.

235

230

227

225

222

220

220

222

217

227

230

225

220

215

213

210

206

204

206

206

206

208

208

206

204

*206

204

210

215

213

6,460

215

12,810

Calendar year 1955: Max 1,740 Min 86 Mean 301 Ac-ft 217,700

Water year 1955-56: Max 4,280 Min 89 Mean 633 Ac-ft 459,400

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
110 MAIAD RIVER BASIN

Big Wood River at Hailey, Idaho Continued

Combined discharge. In cubic feet per second, of Big Wood River and Big Wood Slough at Hailey, Idaho, 

water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

138 

138

130

130

139

143

144

140

134

131

139

138

132

133

131

129

129

125

130

132

143

149

141

140

145

162

156

152

152

163

156

4,344

140

8,620

Nov.

153 

138

163

163

160

148

154

154

156

163

182

160

130

140

126

99

118

149

162

220

257

202

168

171

165

162

158

155

151

152

4,779

159

9,480

Dec.

159 

145

126

118

9£

134

139

122

143

138

142

154

152

105

111

145

161

151

165

149

149

206

640

716

476

422

386

289

236

228

270

6,776

219

13,440

Jan.

246 

243

217

237

244

233

214

206

186

206

210

206

210

193

199

203

189

175

175

179

186

186

190

156

128

138

150

138

127

122

116

5,808

187

11,520

Feb.

112 

132

148

159

170

158

158

153

148

148

156

156

156

147

150

121

131

136

145

137

145

148

148

139

145

145

142

139

145

4,217

145

8,360

Mar.

139 

139

139

142

139

116

115

T39

139

137

120

115

136

131

128

131

134

137

143

155

165

181

210

252

327

389

357

323

322

322 

331

5,853

189

11,610

Apr.

335 

331

318

330

357

357

371

371

398

466

570

591

624

679

819

981

1,040

1,100

1,270

1,420

,560

,790

,870

,740

,640

,630

,590

,520

1,470

1,420

28,958

965

57,440

May

1,360 

1,420

1,470

1,560

1,560

1,540

1,490

1,520

1,470

1,400

1,350

1,260

1,160

1.100

1,150

1,310

1,580

2,010

2,520

2,78,0

3,260

3,600

4,060

4.540

3,780

4,030

3,660

3,440

3,530

3,710

3,630

72,050

2,324

142,900

June

5.680 

3,620

5,550

3,230

3,070

2,740

2,360

2,260

2,390

2,520

2,690

2,540

2,500

2,460

2,330

2,100

1,750

1,580

1,650

1,780

1,600

1,410

,410

,410

,430

,580

,410

,410

1,460 

1 550

65,070

2,169

129,100

July

1,250 

1,200

1,140

1,100

1,100

1,090

1,060

1,020

1,020

1,040

1,010

1,010

960

907

820

760

687

624

602

586

585

560

518

499

468

451

455

450

450 

427

410

24,177

780

47,950

Aug.

584 

565

556

531

319

518

511

505

294

339

343

530

522

530

550

331

318

509

507

511

298

290

288

278

272

277

284

281

266

259

£

 

9,617

510

19,080

Sept.

247 

242

259

237

233

230

250

252

227

258

241

255

250

224

222

218

214

212.

214

214

214

217

217

215

212

214

212

219

224 

221

6,744

225

15,580

Calendar year 1955: Max 1,760 Mln 99 Mean 319 Ao-ft 231,000

Water year 1955-56: Max 4,340 Mln 99 Mean 651 Ao-ft 472,900
MALAD RIVER BASIN 111

Big Wood River near Bellevue, Idaho

Location.--Lat 43°19'30", long 114°19'30", in SE^NW^- sec. 21, T. 1 S , R. 18 E., on right 

bank 2| miles upstream from flow line of Magic Reservoir, 3f miles upstream from Camas 

Creek, and 10 miles southwest of Bellevue.

Drainage area.--883 sq mi.

Records available.--July 1911 to September 1956 (no winter records prior to 1943 except 

1916, 1922, 1940-41).

Gage. Water-stage recorder. Altitude of gage is 4,820 ft (by barometer). Prior to

July 8, 1921, water-stage recorder at site 1 1/8 miles downstream at different datum, 

July 8, 1921, to Oct. 5, 1954, water-stage recorder at site f mile downstream at 

different datum.

Average discharge.--18 years (1915-16, 1921-22, 1939-41, 1942-56), 293 cfs (212,100 acreft per year)7

Extremes. Maximum discharge during year, 4,130 cfs May 25 (gage height, 6.00 ft); minimum, 25 cfs Mar. 10 (gage height, 1.83 ft).

1911-56: Maximum discharge, that of May 25, 1956; minimum recorded, 7 cfs Apr. 14, 

1932 (gage height, 1.10 ft, site and datum then in use).

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

which are poor. Diversions for irrigation of about 36,400 acres above station. Storage above station is negligible.

Cooperation. Water-stage recorder inspected by employees of Water District No. 7 AB.

Rating tables, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used Dec. 26 to Apr. 9)

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

1.7 

1.9

2.1

2.2

2.3 

2.5

110

149

231

3.0 

3.5 

4.0 

4.5 

5.1

438

655

910

1,220

1,790

3.1 

3.5

79

152

267

440

710

4.0 

4.5 

5.0 

5.6

1,150

1,710

2,470

3,800

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

61

ST

58

56

61

61

61

60

58

58

58

60

60

58

56

56

51

42

47

54

56

56

55 

*61

61

60

60

58

58

55

55

1,772

57.2

3,510

Nov.

55

56

56

56

56

55

55

55

55

55

54

51

5T

51

51

56

b55

76

66

71

92

~8S 102

80

76

74

81

83

*78

76

1,966

65.5

3,900

Dec.

76

71

62

58

56

58

56

55

55

55

55

56

55

52

5?

54

52

52

55

62

67

133

451

735

47?

375

350

272

bZOO

182

186

4,570

147

9,060

Jan.

186

T78

165

165

174

174

161

153

145

141

145

145

149

*149

145

157

145

137

133

130

126

126

130

122

98

100

108

b95

b85

b80

bTjj

4,222

136

8,370

Feb.

b70

b70

b65

b65

b65

b65

64

b60

b60

58

61

61

58

56

b50

b45

43

b45

b45

46

46

46

46

*44

48

42

46

46

46

- -----

1,562

53.9

3,100

Mar.

46

44

46

49

42

b36

b39

36

35

33

b40

b40

52

66

64

64

83

90

90

92

100

110

149 

*186

252

317

305

276

268

276

292

3,618

117

7,180

Apr.

301

292

284

3T5

334

325

334

342

354

400

476

514

544

570

650

790

872

904

1,030

1,190

1,380

1,590

1,750 

1,660

*1,520

1,510

1,510

1,400

1,310

1,230

25,659

855

50,890

May

1,170

1,170

1,200

1,230

1,260

1,230

1,170

1,190

1,120

1,080

1,040

970

888

785

705

755

904

1,160

1,340

1,850

2,180

2,400

2,700 

3,400

*5,500

5.600

3,300

3,400

3,100

5,200

5,200

56,197

1,813

111,500

June

3,300

*5,500

"5,500

3,150

2,700

2,300

1,900

1,700

1,850

1,9OO

2,000

1,900

1,800

1,800

1,750

*1,600

1,420

1,360

1,170

1,170

1,160

1,010

933 

906

924

897

879

846

888

888

50,901

1,697

101,000

July

854

782

654

500

5O7

528

521

549

577

584

536

*488

464

440

416

380

350

338

*304

288

278

278

258 

231

222

195

174

188

207

*199

178

12,467

402

24,750

Aug.

155

135

152

122

124

110

110

107

112

110

107

107

105

102

102

98

98

92

90

9?

*loo

119

122 

110

110

112

112

122

112

110

110

5,452

111

6,850

Sept.

110

107

105

102

98

98

98

98

96

107

114

110

105

100

92

92

92

94

98

102

107

110

114

117 *1TT

110

107

105

112

112

3,129

104

6,210

Calendar year 1955: Max 1,O9O Min 32 Mean 147 Ac-ft 1O6,2OO

Waber year 1955-56: Max 3,60O Min 33 Mean 463 Ac-ft 336, 3OO

Discharge measurement made on this day. 

b Stage-discharge Stage-discharge relation relation affected affected by ice.

Note. Doubtful, fragmentary, or no gage-height record May 19 to June 15; 

basis of recorder graph, 2 discharge measurements, weather records, and rec 

Hailey, records of diversions upstream, and inflow-outflow study of Magic R

discharge estimated on 

:ords for station at 

Reservoir.
112 MALAD RIVER BASIN

Camas Creek near Blaine, Idaho

Location. Lat 43°20', long 114 0 33', in sec. 15, T. IS., R. 16 E., on left bank a quarter of a mile north of Macon siding on Hill City branch of Oregon Short Line Railroad, 

three-eighths of a mile downstream from Willow Creek, 2£ miles upstream from backwater of Magic Reservoir, and 4 miles southeast of Blaine.

Drainage area. 648 sq mi.

Records available. May 1912 to September 1921, April 1923 to September 1956 (no winter 

records prior to 1945). Discharge measurements only for 1922.

Gage. Water-stage recorder. Altitude of gage is 4,870 ft (by barometer). 

Average discharge.--12 years (1944-56), 184 cfs (133,200 acre-ft per year).

Extremes. Maximum discharge during year, 4,410 cfs Apr. 11 (gage height, 11.19 ft); minimum recorded, 2.9 cfs Aug. 24, 25, 26.

1912-56: Maximum discharge recorded, 9,780 cfs Apr. 8, 1943; maximum gage height, 

15.48 ft about.Apr. 18, 1938, from floodmark; minimum discharge recorded, 1.5 cfs 

Aug. 29, 1940.

Remarks. Records excellent except those below 10 cfs, which are good, and.those for 

periods of no gage-height record or ice effect, which are poor. Water diverted for 

irrigation of about 9,300 acres above station. Flow regulated by Twin Lakes Reservoir on Lake Creek (capacity, 31,240 acre-ft) and three minor reservoirs (combined 

capacity, 580 acre-ft).

Cooperation. Occasional inspections of recorder furnished by employees of Water District 

No. 7 AB.

Revisions. WSP 1217: Drainage area.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Mar. 25 Mar. 26 to Sept. 30

0.8 

1.0 

1.2 

1.5

2.1

5.4

9.9

20

2.1 

2.5 

3.0 

3.5 

4.0

176

278

394

1.2 

1.5 

l.S 

2.1 

2.5 

3.0

2.9

6.8

16

32

54

96

172

4.0 

5.0 

6.0 

7.0 

9.0 

11.0

409

725

1,120

1,600

2,790

4,260

Discharge, In cubic feet per second, water year October 1955 to September 1856

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3.5

3.5

3.5

3.5

4.0

4.0

4.0

4.0

4.0

4.0

8.0

7.0

6.0

5.0

4.5

4.0

4.0

4.0

4.0

4.0

5.0

5.0

5.0

*4.1

4.7

4.5

4.1

6.0

5.2

4.9 

4.5

141.5

4.56

281

Nov.

4.5

5.2

5.6

5.6

5.6

5.6

5.6

5.6

6.0

6.7

7.3

7.1

6.2

bS.O

4.0

4.5

5.5

7.0

10

16

23

15

11

11

9.7

10

11

*11

11

11

252.3

8.41

500

Dec.

11

9.7

b7.5

6.0

5.5

8.0

9.0

8.0

8.0

8.0

9.0

10

9.5

.9.0

8.0

10

11

11

12

15

18

89

318

3TT

232

b200

b!80

150

130

125 

120

2,058.2

66.4

4,080

Jan.

110

105

100

100

95

90

90

90

85

*94

92

97

106

112

114

143

163

135

120

120

110

105

105

90

75

80

90

80

65

60

55

3,076

99.2

6,100

Feb.

50

50

55

65

70

70

65

70

70

70

70

75

70

70

65

60

65

65

70

*74

71

71

72

70

65

65

65

70

70

------

1,938

66.8

3,840

Mar.

70

70

70

70

60

65

70

60

60

55

60

70

60

55

60

65

70

80

87

96

103

113

137

174

259

*356

396

465

610

764

970

5,700

184

11,310

Apr.

1,110

1,220

1,440

1,850

2,500

2,350

2,870

2,600

2,960

3,520

*4 .080

4,040

3,720

3,410

3,290

3,060

2,760

*2,290

1,910

1,700

1,600

1,540

1,480

1,380

1,260

*1,180

1,110

1,090

962

894

65,176

2,173

129,300

May

795

72T

686

676

655

644

620

624

630

672

630

585

540

477

434

412

409

434

474

519

546

561

596

683

683

652

*6H7

599

602

579 

537

18,306

591

36,310

June

507

477

454

440

406

379

340

292

235

240

218

199

174

148

128

120

106

*91

77

70

68

63

63

63

58

54

46

41

35

52

5,624

187

11,160

July

32

31

30

29

27

28

27

24

21

16

15

12

12

9.5

8.2

7.9

7.3

7.3

*7.6

7.3

42

16

7.9

6.6

970

9.8

7.9

6.8

8.2

7.3

7.9

488.5

15.8

969

Aug.

7^9

7.6

7.9

7.1

6.6

6.1

5.9

5.9

5.7

5.5

5.3

5.0

4.8

4.6

4.4

4.4

4.3

4.1

3.9

3.8

*3.8

3.8

3.6

3.2

lii

3.4

3.6

3.4

3.4

3 .4 

3.4

148.9

4.80

295

Sept.

3.4

376

3.4

3.4

3.4

3.6

3.6

3.6

3.6

3.8

4.1

4.1

4 .1

4.1

3.9

3.9

3.9

3.8

3.8

3.9

4.1

3.9

3.9

*4.1

4.1

4.1

4.3

4.3

4.3

4.4

116.5

3.88

231

Calendar year 1955: Max 504 Min 2.7 Mean 54.8 Ac-ft 39,690

Water year 1955-56: Max 4,080 Mln 3.1 Mean 281 Ac-ft 204,400

Peak discharge (base. 500 cfs). Apr. 11 (8 p.m.) 4,410 cfs (11.19 ft); May 24 (10 to 11 a.m.) 

704 cfs (4.94 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 1-23, Nov. 15-19, Dec. 4-18, Dec. 28 to Jan. 9, Jan. 18 to 

Feb. 19, Feb. 24 to Mar. 18; discharge estimated on basis of weather records, Inflow-outflow studies 

for Magic Reservoir, and records for nearby streams.
MALAD RIVER BASIN 113

Magic Reservoir near Richfield, Idaho

Location. Lat 43"15' , long 114 8 22' , in NE&SEi sec. 18, T. 2 S., R. 18 E., at dam on Big 

Wood River and 18 miles northwest of Richfield.

Drainage area. 1.600 sq mi, approximately.

Records available. February to April 1909 (gage height only), April 1909 to September 

1956.

Page. Staff gage read once or twice daily. Datum of gag

Irrigation Co., which is reported to be about 137 ft below mean sea level. Prior to

is 4,800 ft above datum of Haho

Apr. 1,1937, tape or temporary staff gages at dam. 

1942, was 4,800 ft lower. Datum of gages prior to Oct. 1,

Extremes . Maximum contents observed during year, 191,500 acre-ft May 25, June 2 (gage 

height, 135.0ft); minimum observed, 24,740 acre-ft Oct. 1 (gage height, 65.3 ft).

1909-56: Maximum contents observed, 194,200 acre-ft Apr. 30, 1951 (gage height, 

135.7 ft; no storage for several days in 1909, 1919-20, 1924, 1928, 1935.

Remarks . Reservoir is formed by earth- and rock-fill dam, completed in 1909 and raised 

5ft in 1917. Capacity, 191,500 acre-ft between gage heights 21.4 ft (2.9 ft above 

bottom of outlet pipe) and 135.0 ft (top of 5-foot flashboards) . Dead storage unknown. 

Water is used for irrigation of lands in Carey Act project of Big Wood Canal Co. Figures given herein represent usable contents including bank storage. Gage read in morning except during irrigation season when it was read morning and evening; contents computed from morning reading.

Cooperation . Gage readings and yield table furnished by employees of Water District 

No . 7 AB .

Revisions. WSP 1217: Drainage area.

Capacity table, water year 1955-56 (gage height, 

In feet, and contents, In acre-feet)

65.0

70.0

75.0

80.0

85.0

90.0

24,350

31,230

39,040

47,700

57,010

66,790

95.0

100.0

110

120

130

135

76,940

87,730

111,900

139,500

172,600

191,500

Contents, In acre-feet, at 6 to 11 a.m., water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

50

31

/ t j

(*)

Oct.

24.740 

25,130

25,520

25,790

26,050

26,190

26,460

26,720

26,720

26,860

26,860

27,000

27,150

27,270

27,400

27,400

27,540

27,820

27,960

28,090

28,090

28,250

28,250

28,570

28,510

28,790

28,950

29,070

29,560

_

29. 640

68.9

+4,900

Nov.

29,780 

29,950

50,220

50,360

30,510

50,650

50,800

50, 940

30,940

51,090

51,250

31,380

31,550

31,680

51,850

_

-

-

 -

-

_

-

-

-

-

.

-

-

32,120

32,550

70.74

+2,690

Dec.

:---

.--_-

__-_

34,870

35,020

35,180

35,340

35,490

35, 800

36,280

36,920

-

-

-

.

-

-

-

_

52,100

82.4

+19,770

Jan.

53.050 

53,970

53,910

55,860

56,820

57,390

57,970

58,930

60,100

60,480

60,870

61,660

62,050

62,240

62,850

63,620

64,410

64,800

65,600

66,190

66,790

67,580

68,580

68,780

69,390

69,990

70,390

71,000

71,400

72,010

22, 420

92.8

+20,520

Feb.

72,820 

73,020

73,430

-

73,640

74,250

74,870

75,080

75,280

75,700

75,900

-

-

-

77,360

77,570

77,980

78, 190

78,400

78,820

79,030

79,460

79,460

79,880

80,520

80,750

80,750

80,940

81,160

97.0

+8,740

Mar.

81,590 

81,800

82,240

82,450

82,670

82,880

83,100

83,320

83,530

83,750

83,970

84,190

84,630

85,070

85,290

85,510

85,950

86,170

86.620

86,170

85,750

85,070

84,410

85,520

82,450

81,590

80,750

79,670

78,820

78,190

77.980

95.5

-5,180

Apr.

77,980 

77,780

77,780

78,190

80,500

82,880

85,510

88,640

91,570

95,560

105,500

107,800

114,500

120,900

126,600

135,900

141,900

149,100

154,900

160, 600

166,900

172,600

178,100

183,800

186,800

187,600

188,000

187,600

187,600

187,200

135.9

+109,220

May

186, 800

187,200

186,800

187,200

187,200

186,800

187,200

187,200

186,800

187,200

186,800

187,200

187,200

186,800

186,800

186,800

187,200

187,600

188,800

188,800

190,300

190, 500

190,700

190, 7OO

191,100

191,100

191,100

191,100

190,700

191,100

191,100

134.9

+5,900

June

191,100 

191,500

191,100

190,700

190, 300

190,300

190,300

190,700

190,700

190, 300

190, 700

190,700

190,700

190,700

191,100

190, 300

190, 300

190, 300

190, 700

190,700

190,700

190, 300

190,300

190, 300

190,700

190,700

190,700

190,700

190,700

191,100

134.9

0

July

190,700

190,300

189,900

189,200

188,800

188, 400

187,600

187,200

186, 400

186,100

185,300

184, 500

185,800

182,600

181,900

180,700

179,600

178,500

-

176,300

175,200

174,400

173,300

172,200

171,500

170,400

169,400

167,600

166,200

164,800

163,700

127.5

-27,400

Aug.

165,700

161,000

159,600

158,500

156,900

155,600

154,600

153 , 300

152 , 000

150,700

149,400

148,100

146,600

145,600

144,400

143,100

141,900

140,700

139,500

138,300

157,100

156,000

154,800

134,200

135,100

131,900

150,800

129,400

128,500

127,400

126,300

115.4

-37,400

Sept.

125,500

124,400

123,800

123,000

121,900

120, 900

119,800

119,000

117,900

116,800

116,500

115,800

115,000

114,200

115,400

112,600

111,900

111,100

110,100

109,600

109 , 000

108,500

107,500

107,000

106,500

105,800

105,000

104,500

105,500

105.000

106.5

-25,300

Calendar year 1955;................... t -42,280

Water year 1955-56.. .................. t +78,260

t Oage height, in feet, at end of month. 

t Change In contents, In acre-feet.
114 MALAD RTVER BASIN

Big Wood River below Magic Dam, near Richfield, Idaho

Location. La t 43°14', long 114°22', in sec. 18, T. 2 S., R. 18 E., on right bank half a 

mile downstream from Magic Dam and 18 miles northwest of Richfield.

Drainage area. 1.600 sq mi, approximately.

Records available . April 1911 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,665 ft (by barometer).

Average dls charge.--44 years (1912-56), 427 cfs (309,100 acre-ft per year).

Extremes. Maximum discharge during year, 4,500 cfs June 2 (gage height, 8.94 ft); minimum, 3.2 cfs Oct. 30, Nov. 10, 11, 12.

1911-56: Maximum discharge, 10,000 cfs Apr. 26, 1952 (gage height, 15.68 ft, from 

floodmark); no flow Feb. 3, 1915.

Remarks. Records excellent except those below 20 cfs and those computed from twice-daily 

staff-gage readings, which are good. Water diverted for irrigation of about 

47,100 acres above station. Plow regulated by Magic Reservoir (see preceding page), 

Twin Lakes Reservoir on tributary of Camas Creek ( oaPac ity, 31,240 acre-ft) , and minor 

reservoirs having combined capacity of about 680 acre-ft.

Cooperation. Water-stage recorder inspected by employees of Water District No. 7 AB.

Rating tables, water year 1955-56 (gage height, in feet 4 and discharge, 

in cubic feet per second) "'

Oct. 1 to Apr. 25 Apr. 26 to Sept. 30

1.8 1.5

1.9 5.0

2.0 12

2.3 42

2.6 81

3.0 156

3.5 312

4.0 540

5.0 1,140

7.0 2,710

3.0 156

3.5 326

4.0 571

5.0 1,220

7.0 2,780

9.0 4,550

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27 

28

29

30 

31

Total

Mean

Ae-ft

Oct.

7.8

77T

7.1

7.1

6.4

7.1

7.8

7.8

7.8

7.1

6.

7.

7.

7.

7.

6. 

6.

6.

6.

6.

6.

5.

5.

*4 .

4.3

4.0

4.0 

4.0

4.0

3.6 

4.0

190.9

6.16

379

Nov.

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.6

.6

.0

.6

.0

.0 

0

.0

.0

.0

94

g411

g235

g!58

g258

131

4.0 

4.0

*4.3

4.6

1,382.7

46.1

2,740

Dec.

4.6

4.3

4.3

4.3

4.6

4.6

4.3

4.6

4.3

4.6

4.3

4.3

4.6

7.1

473

4.3 

4.0

4.3

4.6

4.6

4.6

5.7

5.7

5.0

4.6

5.0

5.0

5.0

4.6

4.6 

4.6

145.3

4.69

288

Jan.

.L!

4.6

5.0

5.0

5.0

5.0

5.7

5.0

5.0

5.7

5.6

6.4

5.

*5.

5.

5 . 

5.

5.

5.

6.

6.

6.

6.

5.

6.

6.

6. 

5.

57~ 7.

5.

176.6

5.70

350

Feb.

9.9

5.

5.

6.

6.

6.

6.

6.

6.

6.

6.

6.

6.

7.

7.

8. 

7.

7.

7.8

7.8

7.8

7.8

7.8

*7.1

8.5

8.5

7.8 

8.5

8.5

------

210.1

7.24

417

Mar.

8.5

972

9.2

9.9

9.9

9.9

9.9

11

9.2

9.9

11

9.9

11

11

11

11 

11

12

242

500

560

712

,000

,200

,410

,510

1,490 

,480

,470

1,480 

1.560

14,798.5

477

29,350

Apr.

1,720

1,810

1,810

1,810

1,840

1,850

1,860

1,890

1,910

1,740

1,670

1,590

1,340

1,290

706

201 

16

16

16

17

18

142

196

889

2,130

*2,550

2,660 

2,630

2,440

2,220

40,977

1,366

81,280

May

2,060

1,980

1,920

1,940

1,930

1,920

1,900

1,860

1,770

1,780

1,660

1,610

1,530

1,370

1,180

1.030 

1,040

1,210

1,580

2,100

2,590

2,990

3,450

3,840

4.510

4,300

4,190 

*4,250

3,800

3,700 

3,700

74,490

2,403

147,700

June

3,820

4.250

4,170

3,770

3,280

2,970

2,500

2,160

2,060

2,080

2,130

2,180

2,180

2,140

2,080

1,790 

1,540

*1,380

1,260

1,260

1,270

1,140

996

961

975

961

899 

989

996

989

59,176

1,973

117,400

July

975

940

892

833

859

879

892

906

892

886

906

913

920

920

940

933 

926

920

*906

892

892

892

886

886

886

879

879 

879

872

872 

866

27,819

897

55, 180

Aug.

852

846

826

807

807

807

807

807

807

801

801

795

782

770

751

733 

733

733

727

*727

709

703

697

697

679

673

679 

656

621

605 

605

23,043

743

45,710

Sept.

605

588

610

627

605

588

588

593

593

577

571

539

522

501

491

491 

491

470

465

470

496

475

455

440

*440

450

455 

475

486

175

15,332

511

30,410

Calendar year 1955: Max 900 Min 3.6 Mean 285 Ac-ft 206,000

Water year 1955-56: Max 4,310 Min 3.6 Mean 704 Ac-ft 511,200

* Discharge measurement made on this day.

g Computed from twice-daily staff-gage readings and waterraaster's report of gate changes.
MALAD RIVER BASIN 115

Little Wood River at Campbell Ranch, near Carey, Idaho

Location. let 43°28', long 114 e 03' , in SW&JWi sec. 35, T. 2 N. , R. 20 E., on left bank 

at Campbell Ranch, above flow line of Little Wood Reservoir, l£ miles downstream 

from High Five Creek, 2£ miles downstream from Muldoon Creek, 11 miles east of 

Bellevue, and 12 miles northwest of Carey.

Drainage area. 267 sq mi.

Records available. February 1920 to September 1926 (published as Little Wood River 

near Carey); March 1941 to December 1942, April 1944 to September 1956 (no winter 

records except 1921-24, 1926). Records for other years published as Little Wood 

River near Carey are at site 6 miles downstream and are not equivalent owing to diversion, inflow, and regulation.

Gage. Water-stage recorder. Altitude of gage is 5,250 ft (by barometer). Prior to 

Apr. 5, 1944, at site 650 ft downstream at datum 3.50 ft lower.

Average discharge. 5 years (1920-24, 1925-26), 152 cfs (110,000 acre-ft per year).

Extremes.--Maximum discharge during year, 3,110 cfs Dec. 22 (gage height, 6.34 ft, from 

I'loodmark) , from rating curve extended above 1,800 cfs; minimum daily, 25 cfs Nov. 15, 

but may have been less during period of no record in winter; minimum gage height 

recorded, 0.92 ft Sept. 19, 20.

1920-26, 1941-42, 1944-56: Maximum discharge, that of Dec. 22, 1955; minimum 

recorded, 14 cfs Aug. 29, 30, 1926.

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

and maximum discharge, which are fair. Flow slightly regulated by Campbell Reservoir 

(capacity, 125 acre-ft; 2,700 acre-ft prior to failure of dam in 1930), on tributary 

Diversions for irrigation of about 5,250 acres above station.

Cooperation.--Water-stage recorder inspected by employees of Little Wood Reservoir Co 

and Water District No. 11 C.

Revisions. WSP 633: Drainage area.

Rating tables, water year 1955-56, except period of ice effect (gage 

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

(shifting-control method used Jan. 12, Mar. 28 to Apr. 24)

Oct. 1 to Dec. 23

0.8 20

1.0 34

1.2 59

1.5 116

Dec. 24 to Sept. 30

0.9

1.1 

1.4 

1.7

132

228

2.0 345

2.5 585

3.0 870

3.5 1,190

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

31

31

30

30

31

32

32

31

32

32

32

32

32

32

32

32

32

32

32

34

37

37

35

36

*37

41

43

43

42

44

44

1,073

34.6

2,130

Nov.

43

38

45

45

46

45

48

46

46

46

46

41

b34

a30

a25

a30

a35

a40

a55

a75

a95

a70

a52

a51

a50

a48

a46

a47

*49

a49

1,416

47.2

2,810

Dec.

_

_

-

Jan.

*82

.

_

-

Feb.

~ -----

_

_

-

Mar.

_

-

_

-

-

_

-

-

_

-

.

_

_

_

-

_

_

_

_

-

_

_

_

_

-

_

_

*285

281

301

329

_

_

-

Apr.

329

289

269

355

363

329

337

350

440

590

744

690

734

810

858

906

*834

798

852

870

900

912

 906

858

744

700

690

640

575

525

19,147

638

37,980

May

485

485

505

525

525

515

485

470

455

435

440

412

372

341

329

350

422

525

612

700

780

*828

876

986

944

912

894

834

840

816

816

18,914

610

37,520

June

888

834

756

684

656

580

505

520

560

580

596

*545

530

500

485

422

372

321

325

368

321

289

293

309

309

289

305

297

297

275

14,009

467

27,790

July

239

232

210

200

207

204

204

196

196

196

193

187

171

171

161

155

*141

138

129

127

129

122

114

111

104

102

102

104

109

102

93.

4,849

156

9,620

Aug.

86

84

79

77

75

71

71

71

68

66

64

62

62

62

62

60

62

60

60

58

*58

54

52

51

51

52

54

57

54

52

51

1,946

62.8

3,860

Sept.

50

47

46

46

46

46

47

52

47

57

56

63

54

48

47

46

44

42

42

42

42

44

44

43

42

42

42

44

48

47

1,406

46.9

2,790

Calendar year : Max Mln Mean Ao-ft

Water year : Max Mln Mean Ac -ft

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated 

Wood Reservoir, Little Wood River near Carey, 

b Stage-discharge relation affected by Ice.

on basis of weather records and records 

ind nearby streams.
116 MALAD RIVER BASIN

Little Wood Reservoir near Carey, Idaho

Location. Lat 43°25'30", long 114°01'30", in NW^NW^ sec. 13, T. IN., R. 20 E., at gatecontrol structure near right end of dam on Little Wood River 8f miles northwest of 

Carey.

Drainage area. 279 sq mi.

Records available. October 1955 to September 1956.

gage. Staff gage. Datum of gage is 5,100 ft above mean sea level (levels by Bureau of 

Reclamation).

Extremes.--Maximum contents during year, 12,640 acre-ft May 24 (gage height, 98.7 ft, from 

spillway rating and discharge record below reservoir); minimum, not determined.

Remarks.--Reservoir is formed by earth- and rock-fill dam constructed in 1939. Capacity 

of reservoir is 12,180 acre-ft between gage heights 27.4 (bottom of outlet gates) and 

97.4 ft (top of stop logs in spillway). Water is used for irrigation of land near 

Carey.

Cooperation. Gage readings furnished by employees of Little Wood Reservoir Co. and Water 

District No. 11 C. Capacity curve furnished by Bureau of Reclamation.

Capacity table (elevation, in feet, and

31.00 87 60.0 2,660

35.00 226 70.0 4,440

40.0 490 80.0 6,760

45.0 869 90.0 9,660

50.0 1,340 100.0 13,090

Contents, in acre-feet, at 10 a.m., water year October 1955 bo September 1956

Day

1 

2

3

4

5

6

7

a

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 Zf)

ou

31

(t)

(*)

Oct.

-

-

-

-

-

-

-

-

-

_

-

-.

-

11S

_

-

-

-

-

.

-

.

-

108

.

-

-

-

_

-

Nov.

-

-

-

-

_

-

-

-

-

_

-

.

-

-

_

-

-

-

-

.

-

-

-

_

_

-

931 

a940

.

-

Dec.

959

-

-

875

_

849

~

-

-

,

-

-

-

-

.

-

-

-

-

.

912

3,048 

8,094

9,084

9,629

10,060

10,210

10,580 

10,350

10,380

92.2

+9,440

Jan.

10,580 

10,350

10,310

-

-

_

-

-

9,867

-

_

9,654

_

-

-

_

-

-

-

8,965

_

-

8,443

-

_

_

-

-

7,712

83.44

-2,668

Feb.

7,645 

7,585

7,528

7,511

7,488

7,471

7,442

7,414

7,380

7,336

7,358

7,274

7,246

7,307

7,179

7,119

7,064

7,010

6,961

6,945

6,908

6,881

6,849 

6,812

6,776

6,739

6,698

6,647

6,616

_--____

79.44

-1,096

Mar.

-

-

-

.

-

-

-

-

_

-

_

.

-

_

-

-

-

5,904

_

6,024

-

-

_

8,355

-

-

10,510

92.58

+3,894

Apr.

11,100 

11,520

11,740

11,420

11,310

11,130

10,860

10,570

10,570

10,590

10,770

11,300

11,570

12,040

12,330

12,410

12,420

12,410

12,440

12,460

12,470

12,500

12,560 

12,560

12,510

12,480

12,480

12,470

12,460 

12,400

98 . 04

+1,890

May

-

-

-

-

-

-

_

-

_

_

-

.

-

-

-

-

_

12,570

_

-

_

-

-

-

e!2,530

98.4

+130

June

-

-

-

-

-

-

-

-

-

_

12,430

_

_

-

_

-

-

-

-

_

_

-

-

_

_

-

e!2,290

97.7

-240

July

-

-

-

-

-

-

12,220

-

12,110

.

-

_

-

-

.

11,420

11,180

10,790

-

3,951

-

8,668

8,255

_

-

6,945

6,576

5,852

76.30

-6,438

Aug.

5,089

-

4,340

4,147

4,058

-

~

-

5,525

5,163

_

2,944

2,814

-

2,552

-

2,564

-

1,930

1,790

-

-

1,320

_

-

1,134

-

1,069

47.30

-4,785

Sept.

-

-

-

-

-

-

-

-

-

.

-

_

-

-

.

-

-

-

-

_

-

-

-

_

-

-

al22

_

-947

t Elevation, In feet, at end of month.

* Change in contents, in acre-feet.

a No gage-height record; contents Interpolated or estimated on basis of Inflow-outflow study.

e Contents from gage helghb computed from stage-discharge relation of spillway.
MALAD RIVER BASIN 117

Little Wood River below reservoir, near Carey, Idaho

Location.--Lat 43°25'30", long 114°01 I 30", in N| sec. 13, T, IN., R. 20 E., on left bank 

a quarter of a mile downstream from Little Wood River Dam, three-quarters of a mile 

upstream from Little Pish Creek, and 8| miles northwest of Carey.

Drainage area. 280 sq mi.

Records available. October 1955 to September 1956.

gage. Water-stage recorder. Datum of gage is 5,107.33 ft above mean sea level (levels 

by Bureau of Reclamation).

Extremes. Maximum discharge during year, 1,090 cfs May 24 (gage height, 4.36 ft); minimum, 5.5 cfs Nov. 10 (gage height, 0.87 ft).

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

goocT. Storage in Little Wood Reservoir (capacity, 11,700 acre-ft) began Feb. 12, 1941. 

Plow also slightly affected by storage in Campbell Reservoir (capacity, 125 acre-ft) 

on South Pork Muldoon Creek. Diversions for irrigation of about 5,250 acres above 

station.

Cooperation. Water-stage recorder inspected by employees of Little Wood Reservoir Co. 

and Water District No. 11 C.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to June 11 June 12 to Sept. 30

0.9

1.0

1.1 

1.3 

1.6

7.0

15

26

54

106

2.0 

2.5 

3.0 

3.5

4.4

190

324

500

700

1,110

1.1 

1.4 

1.7 

2.0

32

81

141

210

2.5 555

5.0 540

5.5 745

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

32

32

32

32

32

32

33

33

33

33

33

33

33

28

W

35

33

31

31

33

34

35

35

35

35

*38

41

42

42

42 

46

1,079

34.8

2,140

Nov.

46

44

42

44

47

47

48

47

32

25

25

25

25

25

25

23

14

10

I?

13

22

29

33

35

38

41

42

42

*42

44

987

32.9

1,960

Dec.

44

44

46

46

44

42

40

37

34

34

34

35

35

35

35

34

35

35

35

35

35

53

74

61

66

67

69

81

113

T2~9~ 129 

1,636

52.8

3,240

Jan.

T2~§ 129

129

129

127

127

127

127

127

124

124

*124

124

123

123

121

121

119

119

119

119

119

117

119

117

117

117

117

117

106

79

3,736

121

7,410

Feb.

81

8T

81

79

79

79

79

79

79

79

79

79

79

77

77

77

77

77

77

77

76

76

76

76

75

75

75

75

74

------

2,250

77.6

4,460

Mar.

74

74

74

73

73

73

73

72

72

72

72

71

71

71

71

75- 70

70

70

70

70

 70

70

74

81

79

81

82

84

86 

93

2,306

74.4

4,570

Apr.

109

T45

310

458

455

466

489

492

485

496

504

524

580

628

816

898

830

*767

844

880

902

924

956

*888~

772

704

680

648

580

508

18,738

625

37,170

May

458

444

462

492

496

481

462

455

432

418

411

389

356

321

305

315

372

473

592

708

790

*884

942

1,060

1,030

970

938

880

866

844 

821

18,865

609

37,420

June

880

875

785

700

664

588

508

496

540

580

600

*560

532

504

492

435

379

326

317

349

333

289

280 2"9Z~

301

289

292

295

295

283

14,059

469

27,890

July

258

241

226

215

210

210

210

208

205

228

244

244

250

241

210

*'5T6~ 196

280

326

545

359

536

333

323

320

314

511

298

286

280

275

8,188

264

16,240

Aug.

269

2SS

255

229

130

143

161

159

156

141

124

120

118

122

128

118

118

135

154

135

*114

112

110

108

96

85

85

76

67

67 

72

4,168

154

8,270

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Sept.

81

89

98

9!

90

87

81

79

76

72

72

68

67

63

60

57

53

49

47

44

42

42

44

44

42

42

42

42

36

4?

1,852

61.7

5,670

Water year 1955-56: Max 1,060 Mln 10 Mean 213 Ac-ft 154,400

" Discharge measurement made on this day. 

Note.--No gage-height record Oct. 1-14, Feb. 17 to Mar. 19 

weather records and records for station near Carey.

; discharge estimated on basis of
118 MALAD RIVER BASIN

Little Wood River near Carey, Idaho

Location. Lat 43°23', long 114°00', in E| sec. 30, T. IN., R. 21 E., on right bank a 

third of a mile upstream from West Canal, 1 1/3 miles upstream from East Canal, 

2 miles downstream from Little Pish Creek, 3 miles downstream from Little Wood Reservoir, and 6 miles northwest of Carey.

Drainage area. 312 sq mi.

Records available . April 1904 to May 1905 (gage heights only), September 1926 to November 1942, April 1943 to September 1955. Monthly discharge only for some periods, published in WSP 1317. February 1920 to September 1926 at site 6 miles upstream; records 

not equivalent because of diversion and inflow.

Datum of gage is 4,990.59 ft above mean sea level, unadApr. 28, 1904, to May 31, 1905, staff

Sage. Water-stage recorder.

justed. Apr. 28, 1904, to May 31, 1905, staff gage, Sept. 20, 1926, to Apr. 22, 1938, 

water-stage recorder, and Apr. 23 to Aug. 17, 1938, staff gage, at same site at 

datum 0.74 ft higher.

Average discharge . 29 years (1926-42, 1943-56), 134 cfs (97,010 acre-ft per year).

Extremes. Maximum discharge during year, 1,070 cfs May 24 (gage height, 5.68 ft); minimum, 5.5 cfs Oct. 14 (gage height, 1.77 ft).

1904-5, 1926-56: Maximum discharge, 6,000 cfs (due to failure of reservoirs on 

Little Pish Creek) Apr. 20, 1938 (gage height, 12.81 ft, present datum, from floodmark), from rating curve extended above 1,800 cfs; minimum, 1 cfs Jan. 26, 1945, 

Jan. 20, 1948.

Remarks . --Records excellent except those for periods of ice effect or no gage-height record, which are good. Diversions for irrigation of about 6.450 acres above station. 

Storage in Little Wood Reservoir (capacity, 11,700 acre-ft) began Feb. 12, 1941. Plow 

is also affected by Campbell, Cameron, and Howard Reservoirs (combined capacity, 

690 acre-ft) on South Pork Muldoon and Little Pish Creeks.

Cooperation . Water-stage recorder inspected by employees of Little Wood Reservoir Co. 

and Water District No. 11 C.

Rating table, water year 1955-56, except periods of loe effect (gage

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

(Shifting-control method used Apr. 30 to May 5)

1.8 

2.0 

2,2 

2.5 

2.8 

3.2 168

276

410

590

780

1,220

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

31

31

51

51

31

51

52

52

52

52

52

53

35

27

3?

34

32

30

30

32

33

34

54

35

*38

40

42

42

42

45

45

1,064

54.3

2,110

Nov.

44

43

42

43

45

46

46

46

31

24

24

24

24

24

24

24

13

l5~9

12

30

35

36

58 

40

44

46

47

*4T

47

1,008

33.6

2,000

Dec.

47

47

b48

b48

b47

46

b44

b41

b38

b38

38

39

b59

b59

b59

b59

59

40

 - 42

, >v '42

43

425

454

iSS 

109

95

85

95

125

140

140

2,739

88.4

5,430

Jan.

140

140

140

140

140

140

140

140

140

138

138

*138

140

138

138

142

150

126

- . - , 3-22

122

122

122

b!22 

b!22

b!21

120

b!20

b!20

bllO

b85

4,030

130

7,990

Feb.

b8~5" b85

b84

b84

b84

b83

b83

b85

b83

b83

82

82

82

82

81

81

81

81

81 81

80

80

80

80 

80

80

80

80

 79

2,370

81.7

4,700

Mar.

79

*79

79

80

77

b76

b76

76

76

b76

b76

b76

b76

b76

b76

b75

bTJT

b77

79

84

 86

*109

142

170 

180

134

107

105

116

130

130

2,953

95.3

5,860

Apr.

134

TBT

308

504

484

488

516

516

516

523

562

602

645

688

886

960

890

*796

860

890

906

922

*938

890 

780

704

676

657

590

516

19,506

650

38,690

May

472

452

460

492

500

485

465

455

450

415

410

585

350

320

500

510

370

47O

485

700

788

*874

934

1,040 

1,030

955

922

865

850

830

796

18,610

600

36,910

June

860

840

768

676

648

578

500

492

529

558

570

*535

508

484

476

425

370

330

314

346

357

289

279

289 

298

289

289

289

289

276

13,731

458

27,240

July

252

232

218

202

197

197

200

192

J.92

215

232

252

240

255

215

200

*218

286

534

552

349

343

540

354

327

524

321

311

295

289

286

8,158

265

16,180

Aug.

276

270

258

255

126

158

161

159

157

142

128

120

118

122

128

120

118

132

155

136

*115

111

107

102 

90

80

80

72

63

67

66

4,148

134

8,230

Sept.

74

80

92

90

86

82

77

76

72

71

70

69

66

64

60

58

53

50

47

45

45

42

43

43 

42

42

41

42

40if

1,801

60.0

3,570

Calendar year 1955: Max 454 Mln 2 Mean 90.4 Ac-ft 65,480

Water year 1955-56: Max 1,040 Mln 9 Mean 219 Ac-ft 158,900

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 15-24, Nov. 7-28, Dec. 26 to Jan. 11, Feb. 11 to Mar. 1, 

May 6-20; discharge estimated on basis of weather records and records for station below Little Wood 

Reservoir.
MALAD RIVER BASIN 119

Silver Creek near Picabo, Idaho

Location.--Lat 43°17', long 114°01', in sec. 1, T. 2 S., R. 20 E., on left bank li miles 

downstream from drain ditch of Blaine County Drainage District No. 1 and 3 miles 

southeast of Picabo.

Drainage area. 88 sq mi, approximately.

Records available. May 1920 to September 1956 (1923-35, irrigation seasons only).

Gage. Water-stage recorder. Altitude of gage is 4,790 ft (by barometer).

Average discharge.--23 years (1920-22, 1935-56), 154 cfs (111,500 acre-ft per year).

Extremes. Maximum discharge during year, 357 cfs Dec. 24 (gage height, 3.70 ft); minimum, 

57 cfs May 25 (gage height, 0.95 ft).

1920-56: Maximum discharge recorded, that of Dec. 24, 1955; maximum gage height 

recorded, 4.57 ft Jan. 22, 1950 (ice jam); minimum discharge, 26 cfs June 2, 1920 

(gage height, 0.48 ft).

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

Diversions for irrigation of about 9,000 acres above station. Two small canals bypass 

station. Records of discharge do not include water bypassed around station at times 

by slough on right bank from which there is some diversion for irrigation. Silver 

Creek receives considerable return flow resulting from Big Wood River irrigation.

Rating table, water year 1955-56, except periods of ice effect (gage 

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

0.9 

1.5 

2.0

114

166

2.5 

3.0 

3.7 357

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

143

144

144

144

146

150

155

156

158

159

159

157

159

158

158

158

157

156

157

156

154

156

159

159

*158

158

160

160

160

160

161

4,819

155

9,560

Nov.

160

157

157

157

159

160

160

160

162

165

162

153

115

blOO

b90

b85

b80

b95

b!50

b!90

191

188

178

175

172

169

172

177

*179

177

4,595

153

9,110

Dec.

177

176

170

b!50

b!40

b!30

b!45

b!50

b!45

b!60

163

164

164

130

bllO

b!40

b!60

162

167

179

188

221

296

351

300

246

238

b210

b200

b!95

b!90

5,717

184

11,340

Jan.

187

182

176

174

177

180

175

173

170

169

170

*174

178

178

178

192

T91

180

174

169

167

166

174

166

142

b!35

b!20

bllO

b!05

blOO

b90

5,022

162

9,960

Feb.

b90

blOO

bllO

b!20

b!30

b!40

b!45

b!50

b!55

b!60

b!65

b!70

b!70

b!65

b!60

b!60

b!55

b!55

b!55

155

155

*154

154

149

152

153

146

154

153

_ ~ - - - _

4,280

148

8,490

Mar.

149

152

150

156

152

147

b!40 T5~3

152

147

147

147

148

147

145

145

145

145

148

157

160

*172

190

226

263

285

263

231

221

226

9 34

5,443

176

10,800

Apr.

241

241

229

225

241

248 22~5

219

212

211

207

199

188

181

180

174

168

165

162

158

155

152

150

*150

147

148

148

153

147

141

5,565

186

11,040

May

139

137

137

136

134

134

139

142

132

134

132

132

130

125

117

116

96

86

91

91

89

69

*63

66

64

68

74

88

109

108

106

3,384

109

6,710

June

104

100 102-

107

104

107

104

106

107

108

106

102

*104

107

107

119

124

123

123

123

138

142

146

155

158

156

160

154

154

161

3,711

124

7,360

July

168

176

186

187

192

197

196

186

189

179

173

170

182

190

190

189

182

*181

177

173

170

176

178

165

160

157

152

148

T48

153

160

5,430

175

10,770

Aug.

162

162

162

162

162

163

166

168

169

167

162

161

158

153

154

160

161

162

161

163

*160

159

159

167

174

169

168

172

178

186

186

5,116

165

10,150

Sept.

185

184

181

179

176

177

176

176

176

180

194

208

206

200

200

199

197

196

196

191

187

178

174

177

176

176

176

175

182

191

5,569

186

11,050

Calendar year 1955: Max 351 Mln 80 Mean 138 Ac-ft 99,800

Water year 1955-56: Max 351 Mln 63 Mean 160 Ac-ft 116,300

Discharge
120 MALAD RIVER BASIN

Little Wood River near Richfield, Idaho

Location. Lat 43°03', long 114°08', In sec. 30, T. 4 S., R. 20 E., on right bank half a 

mile upstream from Byrns Slough and heading of Dletrlch-Canal, 1 mile east of railroad 

station at Richfield, and 14 miles downstream from Silver Creek.

Drainage area. 570 sq ml, approximately.

Records available. January 1911 to September 1956 (Irrigation seasons only prior to 

1955 except 1913, 1914, 1921).

Gage. Water-stage recorder. Altitude of gage Is 4,270 ft (by barometer). Prior to 

!?ept. 5, 1918, staff gage at site 500 ft downstream at datum 0.92 ft lower. Sept. 5, 

1918, to Apr. 13, 1920, staff gage, and Apr. 14, 1920, to May 20, 1954, water-stage 

recorder, at site 500 ft downstream at datum 0.08 ft higher than present datum.

Extremes. Maximum discharge during year, 508 cfs May 30 (gage height, 4.15 ft); maximum 

gage height recorded, 8.60 ft Feb. 21 (ice Jam); minimum daily discharge, 60 cfs 

Nov. 16; minimum gage height, 2.20 ft May 19.

1911-56:' Maximum discharge recorded, 868 cfs May 3, 1938 (gage height. 3.97 ft, 

site and datum then In use); minimum recorded, 7.6 cfs June 24, 25, 1920 (gage height, 

0.52 ft, site and datum then in use).

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are poor. Diversions for irrigation of about 38,300 acres above station. 

Plow partly regulated by Little Wood Reservoir (capacity, 11,700 acre-ft), Pish Creek 

Reservoir [capacity, 13,700 acre-ft), and three small reservoirs on tributaries (combined capacity, 690 acre-ft). River above Silver Creek is dry a large part of the 

time because of channel losses and irrigation diversions above Carey.

Rating table, water year 1955-56, except periods of ice effect (gage 

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

2.5 

2.8 124

3.1 

3.4 

3.8 

4.2

178 

241 

35O 

500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

99

100

100

100

102

105

110

114

119

121

119

121

121

122

ITS

116

114

114

114

114

113

113

114

119

*118

119

119

121

121

121

121

3,542

114

7,030

Nov.

121

121

121

124

129

129

129

129

131

136

136

136

92

80

70

60

65

85

120

170

165

160

160

155

155

155

155

155

*155

155

3,854

128

7,640

Dec.

155

154

143

138

125

120

130

140

135

140

145

150

150

120

100

110

140

150

155

165

180

200

250

300

2SO

230

200

190

185

180

175

5,105

165

10,130

Jan.

170

165

160

160

165

165

161

157

155

154

*152

154

159

161

163

170

174

TST

159

155

152

152

157

154

140

125

115

105

95

90

80

4,591

148

9,110

Feb.

85

90

100

105

115

120

130

135

140

150

T5B" 155

155

150

140

135

130

135

140

145

145

145

140

140

140

140

140

140

140

3,880

134

7,700

Mar.

145

145

140

140

140

140

135

140

145

145

145

145

145

145

145

150

150

150

160

170

*184

182

198

239

290

317

305

269

237

230

234

5,605

181

11,120

Apr.

237

237

25"5 230

290

311

299

282

274

267

267

267

264

272

290

354

406

428

410

413

416

420

420

428

416

*382

374

374

360

335

9,978

333

19,790

May

308

290

274

269

250

239

219

213

196

170

161

155

148

126

92

85

77

*63

78

134

*182

215

223

248

311

323

350

406

448

-J-WT5 496

472

7,221

233

14,320

June

460

456

464

448

385

341

264

167

152

150

*143

136

114

102

106

121

122

114

100

99

111

122

119

121

132

145

139

141

145

155

5,774

192

11,450

July

157

159

T35

145

143

143

143

136

131

127

121

113

118

121

124

124

*124

118

111

113

108

108

111

108

*102

102

100

106

110

110

113

3,795

122

7,530

Aug.

114

111

106

110

106

105

104

100

96

102

104

100

102

93

90

96

99

100

102

*102

102

99

104

106

113

119

118

114

114

122

126

3,279

106

6,500

Sept.

127

127

129

127

116

122

122

122

126

129

132

132

132

134

159

139

136

126

132

131

134

132

127

127

129

129

129

131

131

134

3,883

129

7,700

Calendar year 1955: Max 300 Mln 60 Mean 114 Ac-ft 82,330

Water year 1955-56: Max 496 Mln 60 Mean 165 Ac-ft 120,000

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 14-28, Dec. 5-20, Jan. 25 to Mar. 15. No 

gage-height record Dec. 14, 15, Dec. 18 to Jan. 6, Feb. 2-20, Feb. 22 to Mar. 2, Mar. 6-20; discharge estimated on basis of weather records and records for station at Shoshone and Silver Creek 

near Picabo.
MALAD RIVER BASIN 121

Little Wood River at Shoshone, Idaho

Location. lat 42°56', long 114°24', in sec. 2, T. 63., R. 17 E., on left bank Just 

upstream from dam used prior to 1955 for diversion of town water supply and 400 ft 

upstream from highway bridge in Shoshone.

Drainage area. 620 sq mi, approximately.

Records available.--April 1922 to September 1956 (irrigation seasons only prior to 1955).

Gage. Water-stage recorder. Datum of gage is 3,956.99 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Oct. 18, 1954, at datum 1.98 ft 

higher.

Extremes. Maximum discharge during year, 586 cfs June 3 (gage height, 5.64 ft); minimum daily, 13 cfs Oct. 13-16.

1922-56: Maximum discharge recorded, 673 cfs Apr. 28, 1952 (gage height, 7.22 ft, 

present datum); practically no flow July 29, 1931, Oct. 3, 1938.

Remarks. Records excellent except those for periods of ice effect or no gage-height

record, which are poor. Diversions for irrigation of about 52,200 acres above station. 

Flow affected by operation of MIlner-Gooding Canal, which diverts from Snake River and 

crosses Little Wood River above station, by operation of five reservoirs above Carey 

(see Remarks for station near Richfield), and by Big Wood River water deliveries 

through Byrns Slough for Dietrich Canal via Little Wood River at Richfield.

Rating tables, water year 1955-56, except periods of ioe effect (gage

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

(Shifting-control method used July 2 to Aug. 7)

Nov. 1 to Sept. 30

0.6

.8

1.1

0.6 

1.0 

1.5 

2.0 

2.5

38

65

106

152

217

3.0 

3.5 

4.0

4.8 

5.6

298

372

429

510

583

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

IE

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

51 SB25

23

20

19

18

16

16

15

14

14

13

T5

13

13

15

14

14

16

18

20

25

*27

28

30

45

47

43

45

45

750

24.2

1,490

Nov.

50

60

64

62

64

65

66

65

64

63

67

64

b50

45

40

45

50

60

blOO

148

150

138

139

139

130

158

178

*T5S

162

149

2,803

93.4

5,560

Dec.

142

139

136

b!20

bllO

b!05

bl!5

b!25

blOO

blOO

blOO

blOO

blOO

blOO

b85

b65

b90

b!20

b!40

146

151

171

211

256

285

283

262

223

176

143

b!40

4,537

146

9,000

Jan.

b!40

b!45

b!45

b!50

154

153

156

148

142

139

140

137

143

145

1SL

159

171

175

T53

150

142

138

151

158

128

102

b95

b90

b80

75

70

4,225

136

8,380

Feb.

70

B5

95

100

105

110

120

130

135

140

ISO" 150

145

140

130

125

120

125

130

140

140

140

135

130

130

130

130

130

135 _

3,640

126

7,220

Mar.

140

140

b!35

b!30

b!20

bl!5

bllO TSo144

147

139

b!25

b!25

132

134

136

152

176

246

310

*459

522 550"

498

438

356

301

377

£62

230

220

7,149

231

14,180

Apr.

224

224

223

223

246

264

276

£62

253

243

171

129

130

128

T33

151

184

310

359

340

362

384

411

422

*395

427

390

394

4£5

455

8,516

284

16,890

May

412

415

485

496

474

468

485

471

459

461

456

462

461

462

451

440

431

434

438

452

483

497

510

496

507

531

517

531

*565

570

575

14,898

481

29,550

June

572

573

580

5s7

538

500

507

482

452

45T

494

495

497

487

484

497

*506

520

520

525

546

563

563

554

548

551

548

527

527

533

15,733

524

31,210

July

544

546

54T

544

542

529

536

532

532

518

509

502

502

502

508

516

521

516

507

*500

500

503

501

508

507

502

502

498

501

492

JAfl 4yo

15,960

515

31,660

Aug.

503

499

511

527

515

506

494

487

486

485

493

486

486

470

465

463

464

463

464

466

*467

460

456

1BT

458

466

473

488

486

473

460

14,884

480

29,520

Sept.

463

457

454

453

457

464

459

459

455

460

466

483

487

4BT

468

459

461

440

433

417

400

417

433

425

416

391

378

385

392

329

13,142

438

26,070

Calendar year 1955 : Max 544 Min 13 Mean 259 Ao-ft 187,800

Water year 1955-56 : Max 580 Mln 13 Mean 290 Ac-ft 210,700

* Discharge measurement made on this day.

b Stage-discharge relation affected by ioe.

Note. No gage-height record Oct. 2-23, Oct. 25 to Nov. 2, Nov. 14-18, Jan. 30 to Mar. 2, Mar. I discharge estimated on basis of records for station near Richfield, Silver Creek near Picabo, and 

Malad River near Qooding.

467239 0-58 9
122 MALAD RIVER BASIN

Malad River near Gooding, Idaho

Location.--Lat 42°54', long 114 0 48', in sec. 21, T. 63., R. 14 E., on right bank at 

Hudson Ranch, 2 miles downstream from bridge on Bliss-Gooding highway, 3j miles 

downstream from confluence of Big Wood and Little Wood Rivers, 5 miles upstream 

from diversion dam for King Hill project, and 6 .miles southwest of Gooding.

Drainage area. 2.990 sq mi, approximately.

Records available. March 1916 to September 1956 (fragmentary 1923-37, 1942). Prior to 

October 1950, published as Big Wood River near Gooding.

Gage. Water-stage recorder. Altitude of gage is 3,345 ft (from topographic map). Prior 

to Apr. 13, 1921, staff gage at same site and datum.

Average discharge. 24 years (1916-22, 1937-41, 1942-56), 232 cfs (168,000 acre-ft per 

year).

Extremes. Maximum discharge during year, 2,750 cfs May 29 (gage height, 8.26 ft); no 

flow Oct. 14.

1916-56: Maximum discharge, 6,500 cfs Apr. 27, 1952 (gage height, 10.67 ft); no 

flow at times in many years.

Remarks.--Records excellent except those below about 30 cfs which are fair, and those for 

periods of ice effect or no gage-height record, which are poor. Diversions for irrigation of about 155,000 acres above station. Flow regulated by Magic Reservoir 

(see p. 113) and by several smaller reservoirs on tributaries, and affected by 

deliveries from canals diverting from Snake River at Milner.

Revisions (water years). WSP 1347: 1934.

Rating table, water year 1955-56, except periods of loe effect (gage 

height, In feet, and discharge, In cubic feet per second)

0.2 

.3 

.4

.5 1.1

0.6 

.7 

.9

1.1

2.4

4.3

10

19

1.4 

2.0 

3.0 

4.O

40

106

254

453

5.0 

6.0 

7.0 

8.2

745

1,140

1,720

2,700

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

1O

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27 

28

29

30

31

fatal

Mean

Ac- ft

Oct.

-6T 153

54

47

31

26

19

17

8.6

3.0

2.2

1.1

.1

0

.4

.3

5.2

3.6

.8

3.9

6.0

6.0

5.8 

*5.5

5.2

18

54 

37

68

73

66

789.7

25.5

1,570

Nov.

66

72

77

91

110

89

85

87

89

116

114

115

80

b85

b7O

b35

b!4

bTo

blOO

119

155

153

168 

184

b!70

184

185 *208

'2UZ 222

3,515

117

6,970

Dec.

198

174

178

182

b!40

b!20

b90

blOO

b88

b90

b90

88

b85

b75

b60

b65

71

82

100

110

126

740

-784 1,670 

399

473

431 

274

208

144

b!60

7,595

245

15,060

Jan.

b!50

b!50

b!40

b!50

b!50

b!70

b!70

b!60

139

150

*137

130

129

125

162

1.050

416

222

196

174

170

167

708 

400

170

141

b!50 

b!30

b!25

a!30

b90

6,645

214

13,180

Feb.

b65

b60

a70

a80

ago

a95

b95

a85

a90

alOO

bllO

b!20

b!30

b!20

bllO

a!05

alOO

b85

b75

b65

*blOO

b!20

140 

130

122

bl!3

114 

bl!3

116

2,918

101

5,790

Mar.

119

158

431

282

256

155

137

150

179

IBS

140

130

130

115

12

103

169

215

297

*549

686

953

1,280 

1,540

1,720

1,640

1,380 

1,300

1,320

1,240

1,180

18,239

588

36,180

Apr.

1,200

1,270

1.30O

1,320

1,340

1,350

1,37O

1,380

1,38O

1,370

1,220

1,160

1,260

1,210

1,080

640

334

209

416

388

244

227

216 

126

159

1,290

*1.S70 

1,560

1,460

1,320

29,369

979

58,250

May

1,070

846

756

731

710

704

720

759

665

551

551

481

453

376

238

105

32

2.8

295 1.6

703

1,050

1,370 

1,690

2,040

2,380

2,480 

2,500

"2.680

2,200

2,150

31,290.4

1,009

62,060

June

*2,170

2,260

2.620

2,540

2,180

1,830

1,560

1,220

885

808

846

885

933

933

897

893

710

520

*436

320

357

355

313 

232

164

134

130 

110

67

5j4

27,362

912

54,270

July

91

115

125

TIT

114

107

89

86

81

71

61

47

38

29

£§

44

53

55

70

*81

64

63

69 

63

67

74

86 

74

91

98

98

2,343

75.6

4,650

Aug.

101

112

127

151

202

192

184

144

119

106

114

107

98

93

87

79

68

72

77

*76

73

73

64

54

54

56

70 

89

105

96

87

3,130

101

6,210

Sept.

81

56

54

15T

60

64

70

72

74

100

129

129

148

147

176

184

179

203

188

196

182

202

236

250" 241

214

168 

167

191

208

4,401

147

8,730

Calendar year 1955 : Max 1,670 Mln 0 Mean 117 Ao-ft 84,720

Water year 1955-56 : Max 2,680 Mln 0 Mean 376 Ac-ft 272,900

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

streams.

b Stage-discharge relation affected by loe.
MALAD RIVER BASIN 123

King Hill Canal near Hagerman, Idaho

Location. lat 42°52' , long 114°55' , in SW£ sec. 27, T. 6 S. , R. 13 E. , on left bank 

above entrance to inverted siphon crossing Snake River, half a mile west of highway 

bridge over Malad River and 3£ miles north of Hagerman.

Records available .--March 1930 to September 1956 (irrigation seasons only 1930-37, 

1940-46) .

Gage . Water-stage recorder. Altitude of gage is 2,850 ft (by barometer). Prior to 

~^fpr. 1, 1948, staff gage at site 400 .ft upstream at datum 1.95 ft higher. Apr. 1,

1948, to May 22, 1951, staff gages at present site at different datum prior to Apr. 12, 

1949; at present datum thereafter. Supplementary gage 500 ft downstream from siphon 

efflux, used June 1, 1949, to May 22, 1951.

Extremes . 1930-56: Maximum daily discharge, 348 cfs July 2, 1956; no flow or small flow 

from leakage at headgate during nonirrigation seasons and other periods when gates 

were closed.

Remarks . Records excellent. This canal, which is operated by King Hill Irrigation 

District to provide water for irrigation of about 10,000 acres, diverts from Idaho 

Power Co.'s canal, which in turn diverts from Malad River (Malad Springs water).

Cooperation. Water-stage recorder graph for supplementary gage furnished by King Hill 

Irrigation District.

Revisions (water years) . WSP 723: 1930.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

23

29

30

31

Total

Mean

Ac-ft

Oct.

274

7TZ

270

266

264

263

262

2S2

262

262

252

249

255

260

263

263

262

262

262

85

2

0c

0

0

0

0

0

0

0

0

5,072

164

10,060

Nov.

(*)

0

0

0

Dec.

C)

0

0

0

Jan.

(*)

0

0

o

Feb.

(*)

- -----

0

0

o

Mar.

0

0

O

o

0

o

0

0

o

0

0

0

P

0

0

0

0

o

0

0

0

0

0

0

0

0

0

1

3

3

2

9

0.3

18

Apr.

2

81

128

*164

164

164

164

164

164

164

226

272

272

272

272

270

272

290

308

309

308

308

323

332

333

344

346

338

328

327

7,409

247

14, 700

May

322

*320

320

318

318

315

32T

322

326

326

324

326

324

324

318

315

322

333

328

538

334

330

332

333

328

327

326

322

*321

320

324

10,057

324

19,950

June

330

330

330

328

327

327

327

321

50

1.

*1

313

326

327

327

326

321

322

327

326

330

332

333

333

333

333

336

340

340

342

8,939

298

17,730

July

344

348

345

342

342

340

340

338

334

333

332

328

327

327

327

326

332

334

328

327

322

321

32T

322

322

322

322

*322

322

326

327

10,243

330

20,320

Aug.

328

333

339

340

333

328

328

43

sf

322

308

306

308

3O6

316

318

318

318

*318

322

321

315

308

310

318

316

315

315

315

315

9,037

292

17,920

Sept.

314

310

310

315

321

318

316

322

326

322

326

324

326

232

352

324

326

328

357

327

324

310

316

315

*315

315

314

315

315

315

9,490

316

18,820

Calendar year 1955: Max 340 Mln 0 Mean 158 Ac-ft 114,700

Water year 1955-56: Max 348 Mln o Mean 165 Ac-ft 119, 5OO

Discharge measurement made on this day.
124 SNAKE RIVER MAIN STEM

Snake River at King Hill, Idaho

Location. Lat 43 e OO', long 115°11' , in SW£ sec. 7, T. 5 S., R. 11 E., on right bank 

300 ft east of railroad station at King Hill and 20 miles downstream from Malad 

River.

Drainage area.--35.800 sq mi, approximately. 

Records available.--May 1909 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,492.3 ft above mean sea level, by stadia 

levels. May 13, 1909, to Mar. 1, 1910, staff gage at present site at datum 2.20 ft 

higher. Mar. 7 to Aug. 16, 1910, staff gage three-quarters of a mile upstream at 

different datum. Aug. 17, 1910, to Oct. 7, 1928, staff gage at present site and 

datum.

Extremes. Maximum discharge during year, 29,400 cfs June 4 (gage height, 12.52 ft); 

minimum, 1,850 cfs Dec. 10 (gage height, 2.47 ft); minimum daily, 7,040 cfs July 3.

1909-56: Maximum discharge observed, 47,200 cfs June 22, 1918 (gage height, 

16.3 ft), from rating curve extended above 30,000 cfs; minimum observed, 1,250 cfs 

Jan. 10, 1950 (gage height, 1.75 ft); minimum daily, 4,760 cfs July 7-9, Aug. 15, 16,

Remarks. Records excellent except those for period of partly estimated gage-height

record, which are good. Flow regulated by powerplants at Lower Salmon Falls and near 

Bliss and by many reservoirs above station. Practically entire flow at Milner 

diverted during most irrigation seasons; flow at King Hill is then derived largely 

from springs and seepage entering below Milner. Diversions for irrigation of about 

1,590,000 acres above station. Records of chemical analyses and water temperatures 

for the water year 1956 are given in WSP 1453.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

5.0 

6.0 

7.0

5,730

7,840

10,300

9.0

11.0

13.0

16,500

23,700

31,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

9,340

8,670

9,020

8,880 

8,760

8,680

8,840

8,780

9,060

f9,450

b8,600

f9,040

f9,880

f9,240

9,750

9,700

9,690 

'§"7§9o 9.900

9,220

9,020

9,460

8.160

 9,78(5

8,660

9,040

9,340

9,240

9,170

9,180

9,240

283,780

9,154

562,900

Nov.

9,980

9,540

9,340

10.300 

9,740

9,140

9,600

8,680

9,240

*9,090

9,060

8,840

8,820

9,140

8,940

8,840

7.950 

8, '926

9,450

8,710

9,460

8,860

9,440

8,740

8,940

9,510

8,960

9,280

9,240

8,920

274,670

9,156

544,800

Dec.

9,310

9,170

8,960

8,540 

*8,980

8,770

9,350

9,040

8,640

9,090

8,720

8,430

9,070

8,700

8,760

7.560

9,OZCi 

9,060

9,160

9,650

9,860

11,700

15.000

11,400

10,200

10,300

9,950

10,100

10,100

9,480

9,540

295,610

9,536

586,300

Jan.

9.440

10,600

10,600

10,400 

10,700

10,300

10,400

10,900

10,400

10,400

10,000

11,200

10,600

 11,200

11,000

*15.600

12,500 

11,300

10, 800

11,200

11,500

11,400

12,300

12,700

12,800

12,000

12 , 500

12,000

11,600

11,800

12, 500

350,640

11,310

695,500

Feb.

12,100

11,100

11,600

11,800 

12,000

11,900

12,200

12,600

11,900

12,100

11,700

11,900

12,000

12,200

11,900

11,900

11,600 

10.900

11,500

11,800

11,900

11,600

12,700

11,900

12,200

12,700

12,700

«12.900

12,900

348,200

12,010

690,600

Mar.

12,800

13,900

13,200

13,200 

12,900

13,700

13,000

13,100

13,200

13,200

12,200

12,800

12,200

11.600

12,660

11,900

12 , 200 

12,700

*13,800

14,900

14,100

15,100

15,600

15,900

18,100

19,000

17,000

17,100

17,400

17,600

20.300

445,700

14,380

884,000

Apr.

21,400

21.500

21,500

20,900 

19,800

18,700

18,200

17,300

17,800

15,700

13,600

13,100

15,200

14,900

13,800

13,200

13,300 

10,400

10,500

10,100

9,570

12,200

13,700

13,700

14,500

16,400

19,500

19,300

17,500

18,400

475,470

15,850

943,100

May

18,100

*18,300

17,000

16,800 

16,100

16,400

16,700

16,900

13,300

13,000

13, 400

13,400

13,800

14,100

15,000

14,000

13,200 

11,900

11,200

10,400

9,450

8.640

8,e6o

9,200

10, 300

11,300

12,500

17,200

*22,300

26,600

28.800

458,090

14,780

908,600

June

*28,800

28,400

28,400

28.900 

28^000

27,300

26,800

26,200

26,000

23,900

*2 1,400

19,200

19,800

19,900

20,200

19,500

21,200 

14,200

16,600

18,800

23,000

22,270

19,200

16,800

12,500

11,800

10, 400

9,850

9,480

8,140

607,370

20,250

*1,205

July

7,500

8,770

7.040

7,360 

7,600

7,690

7,800

7,930

7,800

7,790

7,250

7,770

7,360

7,730

7,590

8,100

7,720 

7,880

7,710

7,240

7,860

8,100

8,060

7,480

8,120

8,080

*8,080

8,160

8,010

8,430

9,020

243,030

7,840

482,000

Aug.

8,250

8,560

8,520

8,620 

8,380

8,660

8,440

8,700

9,140

8,480

8,320

8,960

7,990

9,000

8,960

8,120

8,500 

8,500

7,800

8,960

*8,440

*8,430

*7,800

7,760

8,420

7.710

9,280

37540

8,560

8,460

8,84O

262,800

8,477

521,300

Sept.

8,600

8,580

8.590

8,680 

8,480

9,180

8,560

8,550

8,420

8,720

8,860

9,190

9,360

9,030

9,140

9,120

9,700 

9,470

9,130

9,400

9,280

9,320

9,170

*9,810

*10.000

9,280

9,540

8,980

9,400

9,590

272,930

9,098

541,300

Calendar year 1955: Max 15,000 Min 7,140 Mean 9,145 Ac-ft 6,621,000

Water year 1955-56: Max 28,900 Min 7,040 Mean 11,800 Ac-ft 8,565,000

* Discharge measurement made on this day.

* Expressed in thousands.

f Discharge computed on basis of partly estimated gage-height record.
CANYON CREEK BASIN 125

Mountain Home feeder canal near Mountain Home, Idaho

Location. Lat 43°13' , long 115°42' , in sec. 36 T. 2 S., R. 6 E., on right bank 40 ft 

downstream from point of diversion from Canyon Creek and 5 miles north of Mountain 

Home.

Records available.--April 1924 to September 1929, April 1931 to September 1956 (irrigation seasons only 1924-29, 1931-35, 1938-45).

Gage.--Water-stage recorder and concrete control. Altitude of gage is 3,330 ft (by 

Earometer). Prior to May 4, 1924, staff gage, and May 4, 1924, to Sept. 30, 1929, 

water-stage recorder, at site 30 ft downstream at datum 0.07 ft lower.

Extremes.--1924-29. 1931-56: Maximum daily discharge, 182 cfs Jan. 1, 1943; no flow at 

times during most years.

Remarks. Records good except those below 20 cfs, which are fair, and those for periods 

of no gage-height record or ice effect, which are poor. Canal diverts from Canyon 

Creek in sec. 36, T. 2 S., R. 6 E., and delivers water to Mountain Home cooperative 

canal, which heads in Mountain Home feeder canal half a mile below station, for irrigation of about 5,000 acres in Mountain Home Irrigation District. During nonirrigation season and at times when there is a surplus of water for irrigation, canal 

feeds directly into Mountain Home Reservoir. No diversion from canal above station. 

Plow regulated by headgates in Canyon Creek and by Long Tom and Little Camas 

Reservoirs.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

al.O

aTQ

al.O

al.O

al.O

al.O

al.O

al.O

al.O

al.2

al.4

al.4

al.3 *1.2

1.0

1.2

1.2

1.2

1.2

1.4

1.5

1.5

1.7

1.5

1.5

1.7

1.7

1.7

2.0

2.2 

2.4

42.1

1.36

84

Nov.

2.2

TTT

1.5

1.5

1.7

1.5

1.5

1.5

1.5

1.7

1.7

1.4

1.2

bl.4

bl.O

bl.l

*1.2

1.0

1.7

2.0

1.5

1.2

1.2

1.4

1.4

1.5

1.5

1.5

1.7

2.2

45.1

1.50

89

Dec.

3.5

3.5

3.1

2.8

bl.4

4.6

b4.6

b3.8

4.9

b4.5

4.2

4.2

b4.5

b4.2

b3.5

5.3

5.3

4.9

5.3

6.5

*13

73

167

TBo

108

84

72

62

53

47 

43

966.6

31.2

1,920

Jan.

40

37

35

34

35

36

32

31

30

30

29

28

3O

31

125

118

98

83

64

36

35

41

75

36

27

*22

18

11

7.0

6.0

b5_

1,265.0

40.8

2,510

Feb.

b3

b2.5

bF^

b3

b3.5

b3

b3

a3

a3

a3

a4

b4.5

3.1

19

32

b2O

b21

b23

b25

28

36

31

34

31

32

32

31

30

30

499.1

17.2

990

Mar.

32

35

37

40

41

39

37

*37

37

36

34

34

34

33

31

32

35

44

62

86

82

27

45

56

51

43

38

33

35

40

43

1,289

41.6

2,560

Apr.

40

36

34

41

55

52

75

86

85

88

93

98

»97

95

94

105

110

ToT

99

95

92

92

93

92

88

88

89

90

90

90

2,489

83.0

4,940

May

88

87

85

84

90

90

76

68

62

59

58

56

55

54

53

51

48

15

61

63

78 *79

80

83

80

79

83

81

80

78

75

2,212

71.4

4,390

June

75

75

75

75

75

74

58

56

55

53

53

54

54

55

57

52

42

41

4T

41

*41

50

54

63

62

71

75

75

74

li

1,805

60.2

3,580

July

79

79

78

77

77

78

77

76

75

74

74

74

*73

73

73

78

79

84

54

84

83

81

79

67

64

64

64

59

45

44 

43

2,239

72.2

4,440

Aug.

42

41

4T

42

42

»52

61

62

6?

59

52

52

51

59

60

59

58

58

60

60

59

58

58

52

51

51

51

51

51

51 

51

1,657

53.5

3,290

Sept.

42

40

53

56

5T

*56

56

56

56

56

56

56

56

56

55

52

38

24

20

30

31

26

24

23

23

23

23

24

23

23

1,212

40.4

2,400

Calendar year 1955: Max 167 Mln 0.5 Mean 20.2 Ac-ft 14,660

Water year 1955-56: Max 167 Mln l.O Mean 43.0 Ac-ft 31,190

* Discharge measurement made on this day.

a Ho gage-height record; discharge estimated on basis of weather records, records for Moore Creek 

near Arrowrock, and other records for stations on nearby streams. 

b Stage-discharge relation affected by Ice.
126 BRUNEAU RIVER BASIN

East Fork Jarbidge River near Three Creek, Idaho

Location. Lat 42°02', long 115"22" , in SE^SE^ sec. 14, T. 16 3., R. 9 E., on left bank 

a quarter of a mile downstream from Murphy Hot Springs, 2 miles upstream from mouth, 

and 11 miles southwest of Three Creek.

Drainage area. 89 sq mi, approximately.

Records available.--October 1928 to March 1933, September 1953 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,150 ft (by barometer). Prior to 

Sept. 23, 1953, at same site at datum about 1.6 ft higher.

Average discharge. 7 years (1928-32, 1953-56), 47.2 cfs (34,170 acre-ft per year).

Extremes. Maximum discharge during year, 548 cfs May 24 (gage height, 5.28 ft); minimum, 

2.2 cfs Nov. 2; minimum gage height, 2.44 ft Aug. 23, Sept. 26.

1928-33, 1953-56: Maximum discharge, 584 cfs May 25, 1929, June 25, 1932 (gage 

height, about 5.1 ft, present datum); minimum, 1.6 cfs Nov. 30, 1954 (gage height, 

2.29 ft).

Remarks. Records good except those for period of no gage-height record and those 

below 10 cfs, which are fair. No regulation or diversion above station.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

(Shifting-control method used Apr. 28 to May 20)

Oct. 1 to May 20

2.5

2.6

2.7

2.8

2.2

4.5

9.0

16

3.0 

3.5 

4.0 

4.8

35

104

191

370

2.4

2.5

2.6

May 21 to Sept. 30 

6.5 3.5 

4.0 

4.5 

5.1

152

257

374

521

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

7.6

7.2

6.8

6.8

6.8

6.8

6.8

6.3

6.3

6.3

5.8

673

*6.8

5.8

5.8

5.8

5.8

5.8

6.3

6.3

7.2

9^0

8.1

7.6

7.2

7.6

8.1

7.6

7.6

8.1

8.6

214.9

6.93

426

Nov.

7.6

6.3

9.0

9.7

9.7

9.0

9.7

9.0

9.0

8.1

10

5.4

6.2

7.0

3.8

*8.3

10

10

12

11

12

9.7

7.5

9.7

8.9

10

10

9.7

9.0

10

269.3

8.98

534

Dec.

11

11

10

9

8.5

10

10

10

10

10

11

12

11

9

10

13

12

11

11

*11

10

24

131

101

59

46

43

31

22

30

25

732.5

23.6

1,450

Jan.

21

20

20

19

17

16

15

14

15

15

15

15

15

15

26

59

37

30

27

23

22

20

20

17

*17

18

17

9.7

12

12

7.2

605.9

19.5

1,200

Feb.

9.0

12

12

12

13

13

13

12

11

12

12

13

12

12

11

b7.6

12

11

10

11

10

11

11

10

10

10

10

10

11

323.6

11.2

642

Mar.

11

12

12

12

12

12

*12

13

13

13

12

12

15

12

12

12

16

27

45

50

51

54

66

86

101

88

68

56

51

51 

54

1,061

34.2

2,100

Apr.

50

45

42

41

46

45

46

47

51

71

84

74

68

66

61

77

84

82

95

*122

142

161

167

168

146

144

142

134

118

109

2,728

90.9

5,410

May

104

112

135

161

161

156

158

158

165

156

147

135

125

118

118

135

180

239

299

365

*408

422

441

521

432

420

379

321

275

285 

355

7,586

245

15,050

June

396

367

357

355

331

271

239

250

280

296

305

282

275

255

239

198

162

141

*148

176

160

142

148

168

166

160

158

160

162

150

6,897

230

13,680

July

129

112

101

94

91

89

88

84

81

79

76

71

66

60

55

*50

48

45

44

42

42

41

37

34

33

30

30

29

33

29 

26

1,869

60.3

3,710

Aug.

24

22

23

22

22

*22

20

19

19

18

18

17

16

15

16

15

15

15

15

14

13

12

12

11

TT

12

12

12

11

11

11

495

16.0

982

Sept.

\10

9.9

9.9

9.9

9.5

9.1

8.7

8.7

8.7

9.5

12

IT

*9.9

9.5

9.1

8.7

8.3

8.3

8.3

8.3

9.5

9.5

9.5

9.1

8.7

8.3

8.3

8.3

8.3

8.3

275.1

9.17

546

Calendar year 1955: Max 318 Mln 3.8 Mean 38. Y Ac-ft 28,020

Water year 1955-56: Max 521 Mln 3.8 Mean 63.0 Ac-ft 45,730

Peak discharge (base. 200 cfs). May 24 (8:30 a.m.) 548 cfs (5.28 ft); June 1 (4:30 a.m.) 

420 cfs (4.73 ft) ! 

* Discharge measurement made on this day.

Note. No gage-height record Dec. 2-19; discharge estimated on basis of weather records and 

records for East Pork Bruneau River and Bruneau River near Hot Spring.
BRUNEAU RIVER BASIN 127

East Fork Bruneau River below Three Creek, near Three Creek, Idaho

Location. Lat 42°10' , long 115=13', in NE£ sec. 31, T. 14 S., R. 11 E., on left bank,

 FlTTe downstream from Three Creek and 7 miles northwest of Three Creek Post Office.

Drainage area. 210 sq mi, approximately.

Records available . May to September 1953, November 1953 to November 1954, January 1955,

 March 1955 to September 1956 (fragmentary May, August, November 1953, June to November 

1954, January, March, June to August 1955).

Gage --Water-stage recorder. Altitude of gage is 5,150 ft (by barometer). Prior to

 ^ug. 30, 1955, staff gage at Sails Ranch 3 miles downstream at different datura.

Extremes. Maximum discharge during year, 185 cfs May 28 (gage height, 4.83 ft); minimum,

 2.0 cfs Oct. 3; minimum gage height, 2.57 ft Oct. 1.

1953-56- Maximum discharge recorded, that of May 28, 1956, but may have been 

higher during June 1953; minimum recorded, 1.1 cfs Sept. 11, 12, 13, 1955 (gage 

height, 2.32 ft).

Remarks.--Records good except those below about 20 cfs, which are fair, and those for

 periods of ice effect, which are poor. Diversions for irrigation from main stem and 

tributaries above and below station. Water diverted from Deadwood Creek, tributary ot 

the East Fork, to Cedar Creek Reservoir in Salmon Falls Creek basin for irrigation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IB

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.2

2.2

2.1

275

2.5

2.8

2.9

3.4

3.9

4.2

4.2

4.6

*4.8

4.8

5.0

5.0

5.2

5.2

5.4

6.1

5.4

5.4

5.4

5.2

5.4

5.6

6.3

6.3

6.1

6.3

6.JS

142.6

4.60

283

Nov.

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.7

7.0

7.0

7.0

6.5

6.0

5.0

4.5

*5.5

6.5

8.2

9.7

J7F

8.4

7.4

7.4

7.2

7.4

7.4

7.7

7.4

7.4

7.7

211.6

7.05

420

Dec.

8.4

8.7

8.5

8.2

8.0

9.5

9.2

9.0

8.7

8.7

9.0

~9.0 10

8.0

8.0

8.5

8.5

8.7

9.2

*10

9.5

9.7

9.7

9.7

9.5

9.2

9

9

9

9

9

278.1

8.97

552

Jan.

9.5

9.7

10

10

11

10

11

10

10

10

10

1111

11

16

15

13

12

12

13

13

13

13

12

*11

11

10

9

10

10

8

345.2

11.1

685

Feb.

10-9

11

11

11

11

11

11

10

11

11

11

11

10

9.5

9

10

9.5

9

9

9

10

11

11

11

11

11

12

TT

302.0

10.4

599

Mar.

12

13

13

14

14

12

*11

12

12

11

9.5

975

11

10

10

11

13

18

23

33

38

36

37

34

39

3"8 43

33

31

30

29

660.0

21.3

1,310

Apr.

31

28

27

25

25

24

24

24

23

25

31

36

35

35

35

36

37

37

36

*39

43

53

62

66

69

67

74

81

6T

56

1,248

41.6

2,480

May

48

43

47

55

65

71

79

83

86

83

82

81

67

60

51

43

37

35

50

58

*71

85

87

146

170

153

165

1-7.9

TS0

127

107

2,678

86.4

5,310

June

100

"ge- 102

es

82

81

72

62

58

54

48

43

36

25

58

86

57

46

*38

37

45

37

31

25

25

21

17

17

16

15

1,519

50.6

3,010

July

14

TT

13

12

13

12

11

10

9.7

8.4

7.9

7.0

6.3

5.9

6.5

*6.5

6.3

5.4

4.8

4.6

5.0

5.2

.8

.6

.6

.6

:.2

TS

7.9

5.6

5.2

234.8

7.57

466

Aug.

4.8

4.6

4.6

576" 4.4

5.9

*5.6

5.4

5.2

5.2

5.2

5.2

5.2

5.0

5.4

5.4

5.4

5.6

6.1

6.1

6.1

7.2

rrr

6.3

6.1

7.0

6.7

7.0

7.0

6.7

6 .3

178.4

5.75

354

Sept.

6.5

S7T

6.1

6.1

6.3

6.3

6.3

5.9

4.8

5.0

5.2

5.2

*5.0

4.8

4.8

l^i 374

3.7

3.9

 4.2

4.1

4.1

4.1

4.2

4.4

4.4

4.6

4.6

4.4

4.4

146.0

4.87

290

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 179 Min 2.1 Mean 21.7 Ao-ft 15,760

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 11-17, 

Jan. 8-10, Jan. 23 to Mar. 3, Mar. 6, 7, 9-18.

Dec. 3-5, 13-17, Dec. 26 to Jan. 3,
128 BRUNEAU RIVER BASIN

East Pork Bruneau River near Hot Spring, Idaho

Location. Lat 42°34', long 115 0 31', in SEiNE^ sec. 16, T. 10 S., R. 8 E., on right bank 

at Winter Camp Ranch, 7 miles upstream from mouth and 20 miles southeast of Hot Spring.

Drainage area. 680 sq mi, approximately.

Records available. August 1910 to April 1915, December 1948 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 3,864.7 ft, datum of 1929, supplementary

adjustment of 1947 (levels by Topographic Division). Prior to Dec. 10, 1948, at

approximately present site at different datum.

Average discharge. 11 years (1910-14, 1949-56), 31.3 cfs (22,660 acre-ft per year). 

Extremes. Maximum discharge during year, 145 cfs May 29 (gage height, 4.70 ft); no flow

1910-15, 1948-56: Maximum daily discharge, 450 cfs Mar. 7, 8, 1911, during period 

of ice effect; maximum gage height observed, 10.65 ft Mar. 8, 1911, datum then in use; 

no flow for long periods during irrigation seasons in 1954 and 1955.

Maximum stage known, 16.9 ft, from floodmark, datum then in use, during spring of 

1910.

Remarks. Records good except those below 10 cfs, which are fair, and those for periods 

of ice effect, which are poor. Diversions for irrigation from main stem and tributaries above station. Water diverted from Deadwood Creek, tributary of the East Fork, 

to Cedar Creek Reservoir in Salmon Falls Creek basin for irrigation.

Revisions (water years).--WSP 1397: 1949.

Rating table, water year 1955-56, except periods of Ice effect (gage 

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

1.3

1.4

1.5

1.6

.1

.5

1.2

2.5

3.0 

3.5

4.0 

4.7

102

145

Discharge, in cubic feet per second, water year October 1955 to September 1956

Bay

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

2O

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

0

0

0

0

.8

1.0

1.1

1.1

1.3

!g

.8

1.0

1.0

1.0

1.2

1.3

1.7

2.2

2.2

2.1

1.8

2.0

2.2

2.5

3.1

"

41.0

1.32

81

Nov.

3.8

4.4

4.0

4.0

5.4

4.9

5.2

5.6

5.6

5.6

5.6

5

4

3.2 375"

3.6

*4

5

7

a

7.5

7

7

7

7

7

7

7

7

7.5

168.4

5.61

334

Bee.

8

8

8

7.5

T7F

8

8.5

- 8.5

8.5

8.5

8.5

9

9.5

9

8.5

8.5

9.5

9

10

11

*11

11

13

10" 14

9.4

9.5

9.5

9.5

9.5 9 5

289.4

9.34

574

Calendar year 1955: Max 77

Jan.

10

10

11

11

12

11

12

11

11

11

12

13

12

14

16

18

IS

13

13

13

14

15

16

14

*12

12

11

10

11

11

385

12.4

764

Feb.

10

11

12

12

12

12

12

12

11

12

12

12

12

11

10

10

10

10

10

9.5

10

12

13

12

12

12

13

1±.

TT

334.5

11.5

663

Mln 0

Mar.

15

18

19

19

18

18

17

*17

16

15

14

13

14

13

13

14

14

19

26

30

32

43

4T

40

38

39

43

42

38

35 

34

767

24.7

1,520

Apr.

32

33

32

30

29

28

28

24

2T

25

25

28

*35

35

35

35

35

37

38

36

35

39

*48

56

60

66

65

72

65" 76

1,209

4O.3

2,400

May

58

52

45

44

48

58

67

75

76

82

84

79

78

68

60

51

45

38

34

40

*47

53

70

72

110

133

135

134

144

137 

119

2,336

75.4

4,630

June

~96 104

96

92

86

82

80

73

64

60

55

51

46

39

29

39

80

62

47

41

*37

41

40

33

29

25

23

20

16

i!

1,599

53.3

3,170

July

14

14

14

13

13

11

11

10

8.8

7.8

6.4'

5.6

4.4

3.6

3.3

*3.3

2.4

1.7

2.9

2.2

2.0

1.8

1.5

.8

.6

.4

.3

72" .2

.3

2.0

162.5

5.24

322

Aug.

2.5

1.7

1.7

1.5

1.1

*1.1

l!l

.8

.6

.6

T5" .5

i!i

1.2

1.5

1.1

1.0

1.1

1.2

1.3

1.5

1.6

1.7

2.1

2.9

2.7

2.7

2.9

4^0

4.0 

3.6

53.0

1.71

105

Sept.

3.4

279

2.5

2.5

2.7

*2.7

3.3

1.5

.7

.5

.7

.7

1.1

.8

1.0

.9

.9

1.3

1.3

.7

.3

75

.7

.6

.8

.6

.6

.6

.6

.7

38.1

1.27

76

Mean 9.11 Ac-ft 6,600

Water year 1955-56: Max 144 Mln 0 Mean 20.2 Ac-ft 14,640

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 12 to Dec. 21, Dec. 25, Dec. 27 to Jan. 10, 

JarTTT4, 17-19, 25-29, Jan. 31 to Feb. 29, Mar. 10-15.
BRUNEAU RIVER BASIN 129

Bruneau River near Hot Spring, Idaho

Location . lat 42°46'00", long 115°43'30", in SEi sec. 34, T, 7 S., R. 6 E. , on right 

bank at Dunnam Ranch, 1 mile downstream from Hot Creek, If miles south of Hot Spring 

Post Office, 9 miles southeast of Bruneau, and 16 miles downstream from East Fork.

Drainage area . 2,010 sq mi, approximately.

Records available. --July 1909 to March 1915, October 1943 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,598.5 ft above mean sea level, datum of 

1929 (levels by Topographic Division). Prior to Mar. 12, 1910, staff gage at site a 

quarter of a mile upstream at different datum. Mar. 12, 1910, to Mar. 15, 1915, staff 

gage at present site and datum.

Average discharge. 18 years (1909-14, 1943-56), 404 cfs (292,500 acre-ft per year).

Extremes. -"Maximum discharge during year, 2,570 cfs Jan. 16 (gage height, 8.16 ft); minimum, 49 cfs Nov. 15 (gage height, 3.51 ft).

1909-15, 1943-56: Maximum discharge observed, 5,660 cfs Mar. 1, 1910 (gage height, 

.6 ft, site and datum then in use), from rating curve extended 

imum observed, 40 cfs Jan. 23, Nov. 29, 1911.

0 (ga 

1,200 cfs; minRemarks. Records excellent. Several small reservoirs on tributaries above station. 

Diversions above station for irrigation of about 8,500 acres.

Revisions (water years) . WSP 1063: 1913.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

3.5

3.8 

4.2 185

4.6 

5.0 

5.5

316

481

715

6.0 1,030

7.0 1,700

8.0 2,430

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

65 

65

65

65

64_

64

65

65

65

65

65

65

65

*67

69

69

69

69

69

70

73

81

79

77 

75

75

77

79

79

79

2,180

7O.3

4,320

Nov.

81 

83

79

81

84

86

86

84

86

86

84

88

90

77

56

*59

67

86

113

122

117

113

102

94

88

90

98

100

96

98

2,674

89.1

5,300

Dec.

98 

102

104

92

83

81

92

96

88

111

100

100

113

98

79

86

133

119

113

111

*1H

111

122

418 

512

376

339

316

246

191

165

4,906

158

9,730

Jan.

208 

214

197

178

194

180

168

162

142

130

170

155

155

155

170

1.510

1,360

650

494

417

351

324

302

316 

280

*243

253

224

165

153

130

9,750

315

19,340

Feb.

102 

62

84

115

151

200

217

1ST

175

165

175

197

202

191

168

122

117

130

139

178

178

175

175

168 

155

153

158

153

151

4,547

157

9,020

Mar.

151 

153

162

182

188

175

155

*153

170

170

162

139

157

162

162

158

158

194

328

451

472

512

556

695 

1,000

1.180

1,080

830

695

635

630

12,011

387

23,820

Apr.

635 

561

494

451

46T

521

494

516

556

615

720

794

»732

715

695

695

764

800

8OO

928

1,060

1,160

*1,220

1.290 

1,290

1,200

1,170

1,150

1,090

96O

24,540

818

48,670

Hay

850

788

8OO

882

1,020

1,030

1,050

1,090

1,100

1,080

1,100

1,180

1,080

908

800

742

764

888

1,070

1,280

*1,460

1,610

1,690

1,970 

2,590

2,290

2,170

2,070

1,850

1,640

1,640

40,282

1,299

79,900

June

1,740 

1,660

1,550

1,470

1,380

1,250

1,080

1,000

995

995

1,000

960

902

850

812

830

770

675

584

570

»597

570

534

512 

521

490

460

447

434

417

26,055

868

51,680

July

388 

351

328

309

294

273

270

256

246

236

227

217

2OO

191

182

175

*165

160

153

146

144

139

139

133 

126

122

119

117

117

124

117

6,164

199

12,230

Aug.

Ill 

104

100

100

98

*96

96

92

90

86

86

84

83

83

83

79

79

79

79

77

77

75

72

72 

72

70

T2

75

75

77 

75

2,597

83.8

5,150

Sept.

72 

W

70

67

67

*67

67

67

67

65

69

67

72

72

69

67

64

64

64

62_

62

62

65

67 

67

67

65

65

64 

64

1,999

66.6

3,960

Calendar year 1955: Max 974 Min 56 Mean 201 Ac-ft 145,300

Water year 1955-56: Max 2,390 Min 56 Mean 376 Ac-ft 273, 1OO

Discharge measurement made on this day.
130 SNAKE RIVER MAIN STEM 

C. J. Strike Reservoir near Grand View, Idaho

Lat 42 8 56'45", long 115°58'35", in SW£ sec. 34, T. 5 S., R. 4 E., at dam on Snake 

River, 1 mile downstream from Bruneau River and 7 miles southeast of Grand View. Records 

available, March 1952 to September 1956. Remote registering water-stage recorder in 

channel leading to Grand View Irrigation District canal. Datum of gage is at mean sea 

level (levels of Idaho Power Co.).

Reservoir is formed by earth-fill and rock-faced dam. Storage began in February 1952. 

Total capacity, 250,000 acre-ft at elevation 2,455 ft (top of spillway gates), of whj.ch 

about 50,000 acre-ft will be controlled storage. Reservoir is used for power generation 

in plant of Idaho Power Co. Elevations and area-elevation curve furnished by Idaho Power 

Co.

Month-end elevations and total contents at 12 p.m., October 1955 

to September 1956

Date

Nov. 30.. .................................

July 31 ...................................

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

Elevation 

(feet)

2,454.20

2,454.82

2,451.59

2,454.11

2,454.55

2,455.49

2,455.29

2,455.35

2,454.02

2,454.82

2,454.27

2,454.77

Contents 

(acre-feet)

244,100

248,700

225,400

243,400

246,600

253,700

252,200

252,600

242,700

248,700

244,600

248,300

Snake River near Murphy, Idaho 

Location. Lat 43°18' , long 116°26' , in NE£ sec. 35, T. 1 S., R. 1 W. , on right bank

4i miles downstream from Swan Falls powerplant and 7^ miles northeast of Murphy. 

Drainage area. 41,900 sq mi, approximately.

Records available . August to October 1912, August 1913 to September 1956. 

Gage . Water-stage recorder. Datum of gage is 2,271.17 ft above mean sea level, datum of

1929, supplementary adjustment of 1947. Prior to Sept. 7, 1914, staff gage and Sept. 7,

1914, to Sept. 30, 1935, water-stage recorder, at site 3-y miles upstream at datum

9.79 ft higher. 

Extremes. Maximum discharge during year, 36,100 cfs June 5 (gage height, 12.19 ft); minImum, 6,990 cfs Aug. 19 (gage height, 3.66 ft); minimum daily, 7,100 cfs Dec. . 18..

Maximum discharge, 47,300 cfs June 22, 1918 (gage height, 13.95 ft, site 

an aum then In use); minimum recorded, 3,900 cfs July 9, 19 

minimum daily, 5,440 cfs Aug. 4, 1914.

, . , 

1949 (gage height, 2.53ft);

Remarks. Records excellent. Flow regulated by many reservoirs upstream. Between this 

station and station at King Hill, flow is regulated at Swan Falls and by C. J. Strike 

Reservoir (see above) and by gravity and pumping diversions. About 1,630,000 acres 

Irrigated by diversion from river and its tributaries above station.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

3.7 7,020 7.0 17,3OO

4.5 9,330 8.0 20,800

5.0 10,900 10.0 27,800

6.0 14,OOO 12.0 35,300

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

AC- ft

Oct.

8,790

8,090

9,390

9,480

8,760

8,790

8,670

8,210

6,790

9,240

10,100

9,750

11,200

12,200

9 , 390

7,240

8,210

9,510

8,030 

9,150

10,500

10,100

6,910

*7,720

9,180

8,970

11,100

10,800

10,700

9,540 

9,360

289,870

9,351

574,900

Nov.

9,840

8,470

9,780

9,960

11 . 400

10,300

9,570

11,000

9,060

9,840

9,840

9,780

8,640

8,880

10,600

10,700

8,910

8,530

8,090 

8,910

8,610

lu,100

10,900

9,030

8,790

10,300

8,060

8,440

9,900

10,200

286,430

9,548

568,100

Dec.

*10,300

9,990

9,000

8,440

8,530

8,730

9,360

10,200

9,150

8,300

9,330

9,900

10,500

10,300

11,100

11,300

7,980

7,100

8,610 

9,860

11,000

12,100

14,200

14,300

11,100

11,000

11,000

13,000

14,600

14,500 

11,900

326,680

10,540

648,000

Jan.

8,790

7,150

10,400

12,400

12,800

13,300

10,700

8,970

10,300

*12,900

9,540

7,780

10,700

12,100

8,860

10,600

14,600

15,300

14,900 

13,500

12,300

9,810

10,700

13,200

13,500

13,800

14,800

15,100

13,700

9,660

11,800

363,940

11,740

721,900

Feb.

12,600

12,400

12,900

12,600

12,600

12,000

11,800

11,800

13,000

13,200

13,000

13,800

13,700

13,100

13,700

*13,400

13,500

13,000

9,780 

10, 400

12,600

12,900

12,600

12,500

11,900

10,500

12,000

13,100

12,400

------

362,780

12,510

719,600

Mar.

13,000

13,200

14,300

14,400

14,100

13,800

14,200

13,700

14,200

13,700

13,300

12,500

12,700

14,500

14,500

14,500

11,100

9,210

9,840 

13,200

*15,000

15,200

15,300

15,500

17,800

19,700

21,200

18 200

18,500

18,700 

19 000

458,050

14,780

908,500

Apr.

21,200

22,900

22,400

22,200

21,100

20,100

19,300

19,200

17,600

18,700

16,300

15,600

15,300

15,300

15,600

15,600

15,400

15,200

15,000 

13,900

14,000

12,900

12,800

15,100

15,200

13,700

14,100

14,800

19,700

18,200

508,400

16,950

1,008,000

May

*19,200

18,700

18,500

17,600

17,300

17,200

16,200

18,100

17,600

15,200

15,300

14,900

15,200

14,700

15,300

14,800

15,200

15,100

14,200 

12,800

8,940

9,030

9,930

8,500

10,100

13 , 000

15,200

15,200

18,100

26,100 

29,600

486,800

15,700

965,600

June

*30,700

30,300

29,800

29,600

33,800

30,800

28,200

27,400

26,900

26,700

22,700

18,800

17,900

20,100

20,400

20,600

20,500

20,100

14,400 

17 ,,500

20,000

23,300

22,000

18,200

*16,200

13,800

13,200

9,990

9,270

9,090

642,250

21,410

1,274,000

July

8,850

7,270

7,270

7,240

7,360

7,980

8,730

7,300

7,300

8,090

7,640

7,750

7,160

7,190

7,160

7,160

7,360

7,130

7,470 

7,640

7,690

7,470

7,690

7,750

7,520

7,440

7,890

7,500

7,830

*7,750 

7,830

235,410

7,594

466,900

Aug.

8,610

8,580

8,210

8,O60

8,000

8,150

8,000

8,180

8,380

8,820

8,150

8,320

8,060

8,820

8,730

9,480

8,530

7,780

7,190

7,440

8,240

9,420

8,940

7,920

7,380

7,270

7,640

8,060

8,180

8,300 

8, 700

255,540

8,243

506,900

Sept.

8,610

7,890

8,440

*8,500

8,530

8,090

9,210

8,730

7,860

8,380

8,640

8,700

9,690

9,990

9,570

9,060

8,760

9,270

9,420 

9,780

9,780

9,870

9,030

8,470

10,300

10,100

10,300

9,540

10,000

9,330

273,840

9,128

543,200

Calendar year 1955: Max 14,600 Mln 6,980 Mean 9,313 Ac-ft 6,742,000

Water year 1955-56: Max 33,800 Mln 7,100 Mean 12,270 Ac-ft 8,906,000

Discharge measurement made on this day.
OWYHEE RIVER BASIN 131

Wild Horse Reservoir near Gold Creek, Nev.

Location. Lat 41°41'10", long 115°51'20", in NE£NW£ sec. 25, T. 44 M., R. 54 E., at Wild 

Horse Dam on Owyhee River, 8 miles west of Gold Creek and 12 miles southeast of Mountain City.

Drainage area.--209 sq mi.

Records available. March 1938 to September 1956. Month-end contents for some periods, 

published in WSP 1317.

Gage. Gage readings obtained about once a week from reference point on dam. Datum of 

gage is 6,109.18 ft above mean sea level (levels by Office of Indian Affairs).

Extremes. Maximum contents observed during year, 32,880 acre-ft June 1 (gage height, 

80.10 ft); minimum observed, 360 acre-ft Nov. 28.

1938-56: Maximum contents observed, 35,630 acre-ft Apr. 29, 1952 (gage height, 

81.56 ft); no contents at times during each year 1938-41.

Remarks. Reservoir is formed by concrete-arch dam; storage began Mar. 18, 1938. CapacTUy7 32,690 acre-ft between gage height 20.0 ft (sill of outlet gate) and 80.0 ft 

(spillway crest). No dead storage. Water is used for irrigation on Duck Valley 

project.

Cooperation. Most of gage-height record and base data for capacity table furnished by 

Office of Indian Affairs.

Contents, In acre-feet, water year October 1955 to September 1956

Day

1

2

3

4

5 

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

_

-

-

-

-

881

-

-

-

808

-

_

-

_

-

-

736

-

-

-

-

_

-

692

_

-

a644

_

-366

Nov.

.

-

-

581

-

-

-

522

-

-

-

458

_

_

-

-

.

-

-

-

392

_

-

360

_

a382

_

-262

Dec.

-

403

-

-

-

-

458

~

476

-

-

504

-

_

-

-

_

-

661

-

-

_

-

-

-

1,120

al,160

_

+778

Jan.

_

-

-

-

1,390

-

-

-

1,460

1,540

-

-

_

_

-

_

-

_

-

-

-

-

_

3,420

-

_

-

a3,600

_

+2 , 440

Feb.

_

-

-

-

-

-

_

-

-

-

-

_

-

_

-

-

.

-

-

4,700

-

_

-

-

34,900

___ __ _

_ ___

_

+1,300

Mar.

_

-

-

-

-

-

_

"

5,380

-

-

_

-

_

-

-

_

-

-

-

-

_

8,820

-

_

10,180

310,690

_

+5,790

Apr.

_

-

-

-

-

-

-

"

-

-

-

_

-

-

20,380

-

-

-

-

-

-

_

25,850

-

-

a26,240

_

+15,550

May

_

-

-

-

27,150

-

_

-

-

-

-

_

29,930

_

-

.^

-

-

-

-

_

-

-

32,600

_

a32,79C

.

+6,550

June

32,880

-

-

-

-

-

-

"

32,510

-

32,510

_

-

_

-

-

_

31,970

-

-

-

_

-

-

-

a30,070

_

-2,720

July

_

-

-

-

28,650

-

-

-

"

-

-

.

-

-

24,910

-

.

-

-

24,060

-

.

23,760

-

-

-

323,420

_

-6,650

Aug.

.

-

23,160

-

_

22,140

-

21,780

21,710

-

-

_

-

-

-

-

_

-

-

20, 930

-

_

-

-

-

-

20,170

72.15

-3,250

Sept.

.

-

-

-

19,570

-

-

"

-

18,970

-

_

-

_

_

-

18,390

-

-

18,070

-

_

-

17,880

-

317,700

_

-2,470

t Gage height, In feet, 3t end of month.

t Change In contents, in acre-feet.

a No g3ge reading; contents interpolated.
132 OWYHEE RIVER BASIN

Owyhee River near Sold Creek, Nev.

Location. Lat 41 "41 '10", long 115 "51 '30", in NW^NWi sec . 25, T. 44 N. , R. 54 E. , on right 

bank 500 ft downstream from Wild Horse Dam, 8 miles west of Gold Creek, and 12 miles 

southeast of Mountain City.

Drainage area. 209 sq mi.

Records available . March to November 1916, April 1917 to September 1925, October 1936 to 

September 1956. Monthly discharge only for some periods, published in WSP 1317.

Gage . Water-stage recorder. Altitude of gage is 6,130 ft (from topographic map). Prior 

to Oct. 1, 1936, at site a quarter of a mile upstream at different datum.

Average discharge. 28 years (1917-25, 1936-56), 43.0 cfs (31,130 acre-ft per year), unadjusted .

Extremes . Maximum discharge during year, 136 cfs June 28 to July 15 (gage height, 

3.10 ft); no flow Nov. 29 to May 27.

1916-25-, 1936-56: Maximum discharge, 1,810 cfs May 5, 1922 (gage height, 10.11 ft, 

site and datum then in use), from rating curve extended above 400 cfs; no flow at times 

when reservoir gates are closed.

Remarks . Records excellent. Small diversions for irrigation above station. Flow reguTaTe~d by Wild Horse Reservoir beginning Mar. 18, 1938 (see preceding page).

Rating table, water year 1955-56 (gage height, In feet,

and discharge, In cubic feet per second)

(Shifting-control method used Oct. 23 to Nov. 28,

Aug. 14-25)

0.4

.5

.6

.9

1.1

1.5

0

.1

.2

.9

2.0

5.8

1.9 

2.2 

2.6 

3.0 

3.5

16

31

66

123

221

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

11

IT

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

10

10

10

10

10

10

9.7

9.7

9.7

9.7

9.7

9.7

_9_. J3

325.7

10.5

646

Nov.

¥75" 9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.3

9.3

9.3

9.3

9.0

9.0

*9.0

9.0

9.0

8.8

8.6

8.6

9.0

9.0

9.0

9.0

9.0

9.0

5.4

0

TS

253.1

8.44

502

Dec.

C)

0

0

0

Jan.

(*)

0

0

0

Feb.

-

0

0

0

Mar.

0

C)

0

0

0

Apr.

0

0

0

0

May

0o0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3.0

*15

27

34

79.0

2.55

157

June

37

44

44

40

40

44

41

38

35

31

28

*25

24

23

25

40

40

40

40

50

57

57

58

58

58

71

92

116

136

T5B

1,572

52.4

3,120

July

136" 136

136

136

136

136

136

136

136

136

136

136

136

136

136

134

134

134

111

72

72

71

71

 71

57

49

43

33

33

33

33

3,191

103

6,330

Aug.

32

32

32

32

11

31

32

37

13" 49

48

48

45

40

*40

40

40

40

40

40

40

40

40

43

46

47

47

47

47

47

40

1,262

40.7

2,500

Sept.

37

37

37

36

34

34

34

34

34

34

34

34

34

34

35

35

35

35

35

35

35

35

35

 35

35

35

35

35

35

35

1,047

34.9

2,080

Calendar year 1955: Max 134 Mln 0 Mean 13.1 Ac-ft 9,470

Water year 1955-56: Max 136 Mln 0 Mean 21.1 Ac-ft 15,340

Discharge measurement or observation of no flow made on this day.
OVTCHEE RIVER BASIN 133

Owyhee River above China diversion dam, near Owyhee, Nev.

Location. lat 41°55'20", long 116°04'10", in NW£ sec. 6, T. 46 N., R. 53 E., on right 

bank 1,000 ft downstream from Skull Creek, 1 mile upstream from China diversion dam, 

and 2 miles southeast of Owyhee.

Drainage area. 458 sq mi.

Records available. March 1939 to September 1956.

Gage. Water-stage recorder. Datum of gage is 5,425 ft above mean sea level, unadjusted.

Average discharge. 17 years, 145 cfs (105,000 acre-ft per year).

Extremes. Maximum discharge during year, 904 cfs Jan. 16 (gage height, 8.09 ft); minimum, 

12 cfs Nov. 28.

1939-56: Maximum discharge, 2,710 cfs May 3 or 4, 1952 (gage height, 10.07 ft); 

minimum daily, 2 cfs Sept. 15-18, 1940.

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

which are fair. Numerous diversions above station for irrigation. Plow partly regulated by Wild Horse Reservoir (see p. 131).

Rating table, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used Aug. 1 to Sept. 30)

1.1 

1.5 

2.0 

3.0

63

140

4.0 

5.0 

6.0 

8.0

232

341

476

880

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

S

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

15

TF

15

16

16

16

16

15

15

15

15

15

15

15

16

17

16

16

17

18

19

19

18

18

18

21

22

2ff

20

20 

20

529

17.1

1,050

Nov.

21

25

25

25

23

23

22

22

22

22

23

22

b20

b2o

a20

(*)

 b20

635

21.2

1,260

Dec.

. b20

(*)

i

> b3o

J

32

56

298

407

1W

155

163

113

a90

a70 

a55

2,087

67.3

4,140

Jan.

1

> a55

I

J

55

53

50

53

*48

41

42

45

67

401

753

354

234

194

165

148

136

163

120

114

111

alOO

a90

a85

*b80 

b75

4,052

131

8,040

Feb.

> b75

81

80

77

75

72

70

69

67

66

2,157

74.4

4,280

Mar.

60

57

58

58

70

63

64

55

57

58

b64

*64

62

55

53

51

55

83

141

191

236

278

375

480

559

488

*349

294

280

292

5,332

172

10,580

Apr.

243

213

193

191

231

197

203

216

227

268

308

287

276

276

265

292

319

321

*365

407

428

450

484

4^5" 515

466

446

430

381

348

9,728

324

19,300

May

328

337

353

400

405

378

*437

416

408

410

490

421

374

343

318

310

32?

334

363

384

444

437

450

533

154

476

474

410

*368

346 

324

12,287

396

24,370

June

313

308

297

283

260

252

234

209

192

177

165

*146

136

128

172

190

164

147

132

153

165

148

144

132

126

129" 114

147

166

174

5,503

183

10,920

July

173

T7T

166

167

165

162

154

151

148

148

148

149

145

146

148

147

144

142

143

108

91

91

87

*84

85

69

66

60

58

51 

50

3,817

123

7,570

Aug.

48

47

46

47

47

47

47

45

51

57

59

58

56

54

*48

46

47

47

48

47

45

44

45

47

48

52

55

56

55

55

51

1,545

49.8

3,060

Sept.

47

43

43

44

41

38

38

36

34

41

39

38

37

36

36

36

36

36

37

36

38

36

36

*38

39

39

39

40

42

43

1,162

38.7

2,300

Calendar year 1955: Max 407 Mln 9.7 Bean 58.5 Ac-ft 42,390

Water year 1955-56 : Max 753 Min 15 Mean 133 Ac-ft 96,870

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

streams.

b Stage-discharge relation affected by ice.
134 OWYHEE RIVER BASIN

South Fork Owyhee River near Whiterock, Nev.

Location. Lat 41°48', long 116°29' , in NE£ sec. 16, T. 45 N., R. 49 E., on left bank 

500 ft downstream from Rye Grass Creek, if miles upstream from Chimney Creek, and 

17 miles northwest of Whiterock.

Records available. October 1955 to September 1956. 

Gage. Water-stage recorder.

Extremes.--Maximum discharge during year, 1,580 cfs Jan. 16 (gage height, 5.04 ft); no 

 flow~0ct. 1-12.

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

which are fair. Diversions above station for irrigation.

Rating table, water year 1955-56, except periods of ice effect (gage 

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

(Shifting-control method used Oct. 13 to Nov. 14, 

Dec. 18-28, Jan. 6-15, Mar. 13-17}

1.5 O

1.6 .8

1.7 2.7

1.8 6.6

1.9 19

2.0 37

2.2 87

2.5 171

3.0 345

4.0 86O

5.0 1,550

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

O

O

0

*O

0

0

O

0

O

0

O

O

.2

1.4

3.9

4.2

4.2

4.2

4.2

4.2

4.2

3.9

4.6

5.0

4.6

5.0

6.0

6.6

676

6.6 

6.6

86.2

2.78

171

Nov.

6.6

4.6

3.9

9.5

12

9.5

9.5

9.5

11

11

11

14

T7B" 2.5

*b8.0

b!2

310.1

10.3

615

Dec.

bl7

b60

b80

106

109

120

106

98

73

217

131

177

207

134

b60

2,053

66.2

4,072

Jan.

b60

61

59

59

61

*66

61

61

69

94

778

*1.330

570

308

240

214

207

223

368

*320

247

207

174

142

114

blOO 

b90

6,523

210

12,940

Feb.

b90

2,610

90.0

5,180

Mar.

b90

*b!23

125

122

111

158

316

480

600

59TJ

580

530

565

600

600

575

*490

300

297

289 

320

8,761

283

17,380

Apr.

304

217

168

165

168

186

171

159

148

151

134

183

240

282

308

312

308

257

*257

271

278

278

341

341

333

376

404

560

585

42T

8,309

277

16,480

May

308

271

236

236

274

293

440

490

545

679

80O

756

652

530

408

*390

358

341

350

376

422

430

470

605

762

750

756

706

640

525 

390

15,189

490

30,130

June

a350

a310"

a280

a260

*233

214

2O7

165

139

125

12O

114

loo

98

171

267

240

174

139

151

189

204

177

122

*98

84

 4

71

64 ^c"

Do

5,016

167

9,950

July

66

61

61

82

82

84

7T

66

42

44

*44

44

47

56

44

44

44

42

39

42

42

47

39

39

37

35

33

33

35

33 

33

1, 511

48.7

3,000

Aug.

31

24

20

16

17

19

19

17

17

17

16

13

12

11

*11

11

9.5

11

12

11

9.5

8.5

9T5

9.5

11

11

11

12

13

11 

11

431.5

13.9

856

Sept.

11

12

13

13

13

12

11

11

11

13

12

11

9.5

9.5

9.5

8.5

7.5

7 .5

8.5

9.5

9.5

9.5

9.5

9.5

11

12

11

11

11

11

318.0

10.6

631

Calendar year 1955 : Max - Min - Mean - Ac-ft -

Water year 1955-56 : Max 1,330 Min 0 Mean 14O Ac-ft 101,400

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on the basia of records for nearby stations.

b Stage-discharge relation affected by ice.
OWYHEE RIVER BASIN 135

Jordan Creek above Lone Tree Creek, near Jordan Valley, Oreg.

Location. La t 42°52' , long 116°57', in SE^NE^ sec. 29, T. 6 S., R. 5 W., on right bank 

half a mile downstream from proposed dam site, 0.6 mile upstream from Morgan Ranch 

house, 1 mile downstream from Williams Creek, 4 miles upstream from Lone Tree Creek, 

and 9 miles southeast of Jordan Valley.

Drainage area. 440 sq mi, approximately; 450 sq mi, approximately, at site 2 miles 

downstream.

Records available. April 1955 to September 1956. October 1945 to January 1953 at site 

2 miles downstream; records equivalent except during late summer months when considerable difference may result from irrigation and return flow between sites.

Gage. Water-stage recorder. Datum of gage is 4,501.98 ft above mean sea level (levels 

Ey Bureau of Reclamation). Prior to June 14, 1952, water-stage recorder and June 14, 

1952, to Jan. 31, 1953, staff gage, at site 2 miles downstream at datum 30.45 ft lower.

Average discharge. 8 years (1945-52, 1955-56), 212 cfs (153,500 acre-ft per year).

Extremes. Maximum discharge during year, 3,100 cfs Mar. 25; maximum gage height, 7.74 ft 

Dec. 23; minimum, 2 cfs or less at times during period Oct. 1-25 while stage was below 

intakes.

1945-53, 1955-56: Maximum discharge, 3,250 cfs Apr. 14, 1952 (gage height, 5.57 ft, 

site and datum then in use); no flow part of each day Oct. 4,5, 1948.

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

which are poor. Diversions above station for irrigation.

Rati

0.9

1.0

1.1

1.2

1.4

1.7

2.0

ng tables,

height, 

( Shift ingOct. 1

2.4

3.5

5.0

7.0

14

26

44

water

control

to Mar.

2.5

3.0

4.0

5.0

6.0

7.5

year 1955-56,

method used

24

1,

1,

89

156

350

625

020

950

except

Jan. 16

1,

1,

1,

2,

2,

2.

periods of

to

.4

.6

.8

.1

.4

,7

Mar. 24,

Mar. 25

2.0

4.0

8.0

18

37

69

ice effect (gage

Apr. 19-21)

to Sept. 30

3

3

4

5,

6

7.

.0

.5

.0

.0

.0 1,

.0 2,

120

220

380

880

730

900

Discharge, In cubic feet per second, water year October 1955 to September 1356

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

},

*2.3

}'

> 3

8.2

9.4 

8.8

8.8

9.1

1C)

121.6

3.32

241

Nov.

11

9.4

9.7

9.7

10

11

11

*11

11

11

11

11

b9

bSb9~

bll

b!4

18

22

25

42

34

22 

22

18

22

22 

29

31

28

512.8

17.1

1,020

Dec.

30

26

26

13

b20

24

26

b22

b24

25

28

*32

36

30

b34

b36

37

33

37

73

135

345

*1 , 540 

855

476

415

358 

269

*196

196

£00

5,403

174

10,720

Jan.

170

154

141

137

140

133

130

120

108

118

109

106

TT8

141

1,100

1,050

577

452

400

350

313

358

550 

350

281

273

249 

180

207

209

180

8,904

287

17,660

Feb.

160

160

190

230

230

130

177

161

147

*146

134

144

134

124

105

b90

bSO

blOO

bllO

bl!5

117

122

130 

117

105

100

36 

94

97

-

3,905

135

7,750

Mar.

97

114

128

126

120

110

95

133

164

153

122

120

140

126

127

*169

281

493

765

869

980

1,030

1,520 

1,310

2,490

*2 , 000

1,290 

992

943

971

957

19,595

632

38,870

Apr.

826

718

645

630

685

635

675

645

690

874

1,030

936

943

992

1,120

,310

,280

* ,230

,240

,150

,370

,460

,440 

,440

,400

,590

,610 

,300

,090

950

31,804

1,060

63,080

May

844

802

790

894

894

808

808

814

772

*826

971

850

730

640

585

570

605

670

736

724

706

695

670 

838

778

655

706 

610

560

520

510

22,581

728

44,790

June

480

432

384

356

325

277

241

206

196

188

180

*170

158

154

160

150

144

130

114

124

116

104

97 

92

90

83

72 

62

54

50

5,389

180

10,630

July

48

45

44

42

41

38

37

34

34

26

*13

17

26

18

20

17

14

*13

13

12

15

18

12 

6.6

6.0

7.0

9.2 

9.5

9.5

9.5

9.5

663.8

21.4

1,320

Aug.

9.5

3.5

3.5

9.5

9.8

9.8

9.8

9.8

9.5

12

8.9

7.6

7.-E

6.2

2.6

2.7

2.5

2.3

2.3

2.3

2.3

2.2 2~z z'.z

2.2

2.3

2.4 

*2.3

2.3

2.2

166.1

5.36

329

Sept.

2.3

2.4

2.4

2.5

2.9

2.7

2.7

3.4

3.4

3.5

3.3

3.3

3.2

2.9

2.9

2.8

2.8

2.8

3.0

3.0

2.9

2.9

2.8 

2.7

2.6

2.6

3.4 

4.2

3.9

S.O

91.2

3.04

181

Calendar year 1955; Max - Min - Mean - Ac-ft -

Water year 1355-56: Max 2,490 Min - Mean 271 Ac-ft 196,700

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--Ho gage-height record Oct. 1-4, 6-25, Jan. 31 to Feb. 6; discharge estimated on basis c 

weather records, recorded range in stage, and records for stations in Weiser River basin and Moc 

Creek above Robie Creek, near Arrowrock.
136 OWYHEE RIVER BASIN

Owyhee River near Rome, Oreg.

Location. Lat 42°52', long 117°38', In NE£ sec. 14, T. 31 S., R. 41 E., on right bank 

half a mile downstream from Jordan Creek and 2% miles north of Rome.

Drainage area. About 8,000 sq mi.

Records available. October 1949 to September 1956.

Gage. Water-stage recorder. Datum of gage is 3,343.96 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947.

Average discharge. 7 years, 946 cfs (684,900 acre-ft per year).

Extremes. Maximum discharge during year, 23,000 cfs Jan. 16 (gage height, 14.23 ft); 

minimum, 68 cfs Aug. 25 (gage height, 0.84 ft).

1949-56: Maximum discharge, 27,800 cfs Apr. 14, 1952 (gage height, 15.60 ft); minimum, 42 cfs Aug. 12, 1954.

Flood of Apr. 14, 1952, reported by local resident as the highest in 70 years.

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

Diversions above station for irrigation. Flow regulated by Antelope Reservoir (capacity, 36,600 acre-ft), Wild Horse Reservoir (see p. 131), and numerous small reservoirs.

Rating tables, water year 1955-56 (gage height, In feet, and dlscharg 

In cubic feet per second)

Oct. 1 to Jan. 16 Jan. 17 to Sept. 30

0.7 

1.0 

2.0 

3.0 

4.0

71

132

410

850

1,510

5.0

7.0

9.0

11.0

13.0

2,450

5,400

9,100

13,500

19,000

0.8 

1.0 

1.5 

2.0 

3.0

60

102

230

390

850

4.0 

5.0 

7.0 

9.0 

11.0

1,540

2,470

5,480

9,100

13,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

79 

79

79

79

79

*80

80

82

80

82

86

86

86

88

88

88

88

86

88

88

88

88

86 

84

84

*88

92

94

96

96

98

2,665

86.0

5,290

Nov.

98 

-98

98

98

98

98

100

98

98

98

104

104

102

102

98

86

88

106

108

121

125

130

*137 

137

139

141

130

134

144

146

3,364

112

6,670

Dec.

144 

148

144

150

148

137

94

137

150

146

144

144

144

153

153

141

146

148

148

155

218

260

5,690 

9.030

3,720

2,680

2,070

1,980

1,520

614

31,584

1,019

62, 650

Jan.

509 

533

485

438

410

*404

378

366

345

321

345

318

306

336

1,120

17.300

11,000

5,860

3,510

2,500

*2,070

2,130

3,570 

4,360

3,550

2,420

1,930

1,740

1,470

1,180

1,000

72,204

2,329

143,200

Feb.

775 

582

538

518

620

690

720

690

595

542

506

526

*710

705

620

556

442

406

383

386

430

765

1.300 

1,260

1,090

760

625

522

438

18,700

645

37,090

Mar.

462 

4ST

950

1,700

1,720

'1,530

1,120

844

1,080

1,410

1,370

1,120

880

750

705

650

725

1,380

2,970

5,020

5,620

*5,620

6,840 

8,900

10,600

11.400

9,100

6,020

4,640

4,320

4,800

104,728

3,378

207,700

Apr.

4.300 

3,500

2,940

2,610

*2,61O

3,560

2,860

2,830

2,630

2.550

2,720

2,700

2,730

2,680

2,660

2,720

-2,790

2,950

2,830

2,760

2,730

2,700

2,660 

2,590

2,570

2,610

3,320

3,470

2,980

2,740

86,300

2,877

171,200

May

2,500 

2,200

1,990

*1,870

1,790

1,800

1,810

1,840

2,000

2,010

2,090

2,690

2.980

2J570

2,160

,900

,690

,550

,460

,440

,430

,450

1.590 

1,560

1,890

2,120

2,540

2,600

2,350

2,240

2,090

62,000

2,000

123,000

June

1.810 

1,520

1,310

1,150

1.020

946

850

765

690

605

546

498

*446

414

394

383

376

438

542

470

434

390

386

414

410

380

330

296

272 

251

18,736

624

37,160

July

239 

f2T

210

210

208

197

190

197

197

200

190

187

177

172

184

194

177

162

170

177

182

177

172 

*172

a!70

a!65

a!60

a!55

a!50 

a!45

a!40

5,653

182

11,210

Aug.

a!35 

a!30

a!25

a!20

a!15

allO

a!06

a!04

alOO

a98

a96

*95

93

91

95

95

91

89

84

80

82

78

74 

74

74

76

78

78

78

78

78

2,900

93.5

5,750

Sept.

80 

87

89

87

91

102

T5T

98

98

98

98

98

95

95

95

91

91

*91

93

98

98

93

89 

89

87

87

89

91

89 

89

2,778

92.6

5,510

Calendar year 1955: Max 9,030 Mln 47 Mean 472 Ac-ft 341,600

Water year 1955-56: Max 17,300 Mln 74 Mean 1,125 Ac-ft 816,400

Peak discharge (base. 3.000 efsK Dee. 24 (6 a.m.) 12,300 cfs (10.47 ft); Jan. 16 (3 p.m.) 

23,000 cfs (14.23 ft); Jan. 24 (a p.m.) 4,620 cfs (6.49 ft); Mar. 26 ( 7 p.m.) 12,800 cfa (10.70 ft)j 

Apr. 6 (6 a.m.) 4,280 cfs (6.27 ft); Apr. 27 (9 a.m.) 3,640 cfs (5.85 ft); May 13 (3 a.m.) 

3,080 cfs (5.45 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for Dormer and Blltzen River 

near Frenchglen.
OWYHEE RIVER BASIN 137

Owyhee Reservoir at Owyhee Dam, near Nyssa, Oreg.

Location. Lat 43°38'30", long 117°14'40", in sec. 20, T. 22 S., R. 45 E., near left 

abutment on Owyhee dam, 21 miles southwest of Nyssa.

Drainage area. 11.160 sq mi, approximately. 

Records available. October 1932 to September 1956.

Gage. Staff gage read once daily. Datum of gage is at mean sea level (levels by Bureau 

of Reclamation).

Extremes. Maximum contents observed during year, 1,111,000 acre-ft June 4 (elevation, 

2,669.18 ft); minimum observed, 462,700 acre-ft Oct. 10 (elevation, 2,599.44 ft).

1932-56: Maximum contents observed, 1,140,000 acre-ft Apr. 15, 1952 (elevation, 

2,671.40 ft); minimum observed since full capacity was attained on May 7, 1936, that 

of Oct. 10, 1955.

Remarks. Reservoir is formed by concrete arch-gravity dam, completed In September 1932; 

storage began Oct. 16, 1932. Capacity, 1,122,000 acre-ft between elevations 

2,367.5 ft (bottom of sluice gates) and 2,670 ft (top spillway gate), 715,000 acre-ft 

between elevations 2,590.2 ft (diversion tunnel) and 2,670 ft. Dead storage below 

elevation 2,367.5 ft negligible. Figures given herein are of contents above elevation 

2,367.5 ft. The reservoir will generally not be drawn below elevation 2,590.2 ft. 

Water is released through diversion tunnel to South Canal for irrigation of lands 

west of Snake River in vicinity of Homedale, Idaho, and to North Canal for irrigation 

of lands north and west of Owyhee River, and through sluice gates to river SOT Owyhee 

Canal, which diverts about 18 miles downstream.

Cooperation. Record of elevations furnished by Bureau of Reclamation.

Month-end elevation and contents, water year October 1955 to September 1956

Bate

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

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

Calendar year 1955. .......

Jan. 31............. ........

May 31... ..................

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

Elevation 

(feet)t

2,601.23

2,611.97

-

2,630.25

2,668.95

2,642.77

Contents 

(acre-feet)

474,400

549, 900

-

698, 000

1,108,000

877,800

814,300

_

Change In contents 

(acre -feet)

_

+67,300

-12,500

+148,100

+119,200

+41,000

-93,100

-63,500

t Hour of gage reading not known.

467239 O-58 10
138 OWYHEE RIVER BASIN

Owyhee River below Owyhee Dam, Oreg.

Location. Lat 43°39 I 10", long 117°15'00", in sec. 17, T. 22 S., R 45 E., on left bank 

three-quarters of a mile downstream from Owyhee Dam and 20 miles southwest of Nyssa.

Drainage area. 11,160 sq mi, approximately. 

Records available. February 1929 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 2,343.67 ft above mean sea level (levels 

by Bureau of Reclamation).

Average discharge. 24 years (1932-56), 353 cfs' (255,600 acre-ft per year).

Extremes. Maximum discharge during year, 236 cfs Apr. 3 (gage height, 1.58 ft); minimum 

daily determined, 2 cfs Nov. 1 to Feb. 29.

1929-56: Maximum discharge, 22,900 cfs Apr. 15, 1952 (gage height, 15.7 ft); no 

flow for part of Aug. 8, 9, 1932, when temporary diversion tunnel at Owyhee Dam was 

closed.

Remarks. Records good except those below 4 cfs, which are poor. About 450,000 acre-ft 

diverted annually from Owyhee Reservoir for irrigation of lands below station and outside the basin. Many smaller diversions for irrigation above station. Flow regulated 

by Owyhee Reservoir since October 1932 (see p. 137), by Wild Horse Reservoir since 

March 1938 (see p. 131), and by many smaller reservoirs.

Cooperation. One discharge measurement furnished by Bureau of Reclamation. 

Revisions (water years). WSP 983: 1941-42. WSP 1397: 1930, 1933, 1946.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

l

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

-26

27

28 

29 

30

31

Total

Mean

Ac- ft

Oct.

> a4

> a3

\-

103

3.3

204

Nov.

> a2

60

2

119

Dec.

> a2

*2

> a2

62

2.0

123

Jan.

> a2

62

2

123

Feb.

> aZ

------

58

2

115

Mar.

> a3

93

3

184

Apr.

a3

a3

93

85

91

94 *101

91

85

92

97

103

91

112

122

125

144

157

157

163

170

172 IT?

172

155

159

160

165 

165 

165

3,664

122

7,270

May

163

163

163

151

140

140

138

137

130

122

122

122

122

122

122

122

137

148

160

163

172

179

184

1ST

154

155

132

116 

116 

132

157

4,451

144

8,830

June

174

174

175

175

175

148

134

136

152

160

162

*162

162

172

 182

159

144

152

159 isa

' 159

159

159

159

^59

165

175

175 

175 

175

4,876

163

9,670

July

175

177

177

177

177

177

177

177

177

177

177

182

191

191

195

193

193

193

186

 ^ 182

177

174

175

168

163

163

163

155 

149 

T49 

149

5,434

175

10,780

Aug.

149

149

167

175

T?5

175

159

a!60

a!60

a!65

*165

165

165

165

165

165

165

165

165

165

165

160

155

155

142

136

124

115 

TTF

115

115

4,781

154

9,480

Sept.

115

115

115

105

100

100

100

100

100

100

92

86

86

87

78

73

73

73

73

73

73

73

73

73

73

73

63

57 

FT 

57

2,516

83.9

4,990

Calendar year 1955: Max 93 Mln - Mean 22.2 Ac-ft 16,O80

Water year 1955-56: Max 193 Mln - Mean 71.5 Ac-ft 51,890

* Discharge measurement made on this day.

a No gage-height record; discharge Interpolated.
BOISE RIVER BASIN 139

Boise River near Twin Springs, Idaho

Location. Lat 43°40', long 115"44' , in sec. 

quarter of a mile upstream from Birch Creek,

Arrowrock Reservoir, 4 miles downstream from Twin Springs, and 13 miles upstream 

from Arrowrock.

27, T. 4 N., R. 6 E. , on right bank a 

k, ij miles upstream from flow line of

Drainage area. 830 sq mi, approximately. 

Records available.--March 1911 to September 1956.

Gage. Water-stage recorder. Datum of gage is 3,251.08 ft above mean sea level, unadjusted. Prior to Apr. 4, 1915, staff gage at same site and datum.

Average discharge.--45 years, 1,174 cfs (849,900 acre-ft per year).

Extremes.--Maximum discharge during year, 11.200 cfs May 24 (gage height, 8.76 ft): maximum gage height, 9.59 ft Feb. 3 [ice jam); minimum discharge, 225 cfs Nov. 16 (gage 

height, 1.88 ft), but may have been less during period of ice effect.

1911-56: Maximum discharge, that of May 24, 1956; maximum gage height, that of 

Feb. 3, 1956; minimum discharge, 109 cfs Dec. 10, 1944; minimum gage height, 1.56 ft 

Dec. 15, 16, 1935.

Remarks.--Records excellent except those for periods of ice effect or no gage-height 

record, which are fair.

Rating tables, water year 1955-56, except periods of Ice effect 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to May 22 May 25 to Sept. 30

2.0 

2.2 

2.5 

3.0

254

338

505

880

3.5 1,380

4.0 2,020

5.0 3,520

6.0 5,300

8.0 9,530

2.1 

2.5 

3.0 

3.5

4.0

376

625

1,050

1,610

2,260

5.0 3,770

6.0 5,440

7.0 7,320

8.6 10,800

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

6

7

8

9

10

11

12

L3

14

15

16

17

18

19

20

21

2E

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsrn

In.

Ac-ft

Oct.

329

329

324

320

369

374

359

369

364

369

481

412

390

380

374

364

359

354

354

*354

354

359

354

348

348

359

390

369

369

428

524

11,530

372

0.448

0.52

22,870

Nov.

418

348

390

428

457

412

396

374

385

545

840

544

418

b41U

b330

bZYO

b400

b550

b570

b950

1,150

880

704

633

570

577

696

728

664

626

16,663

555

0.669

0.75

33,050

Dec.

*605

557

493

451

529

538

577

481

518

487

481

531

605

428

412

704

598

531

639

1,100

1,330

5,930

8,480

5,920

3, 440

2,510

2,150

*1,800

1,460

1,360

1,360

46,805

1,510

1.82

2.10

92,840

Jan.

1,240

1,150

1,060

1,050

1,050

979

934

925

832

872

848

816

848

832

1,040

1 , 600

1,410

1,260

1,190

1,140

1,080

1,040

1,050

970

792

+925

925

744

b745

824

648

30,819

994

1.20

1.38

61,130

Feb.

626

b580

b600

a610

a 620

a600

a630

a620

a620

a640

a650

a 700

a620

*557

531

434

5T2

531

518

531

544

564

564

531

538

531

524

*512

512

16,550

571

0.688

0.74

32,830

Mar.

518

538

544

550

544

499

457

531

544

531

463

445

538

512

505

518

584

736

952

1,120

1,260

1,390

1,880

2,540

5,200

3,100

*2,480

2,050

1,870

1,910

1,880

35,189

1,135

1.37

1.58

69,800

Apr.

1,800

1,700

1.650

1,680

1,830

1,820

1,840

1,750

1,830

2,340

2,900

3,020

3,250

5,470

4,100

4,590

4,370

4,550

5,150

5,710

6,250

6,660

6,760

*6,190

5,650

5,570

5,450

5,200

4,640

4,160

115,860

3,862

4.65

5.19

229,800

May

3,820

3,830

3,870

4,170

4,280

4,260

4,240

4,530

4,440

4,510

4,420

4,020

3,620

3.360

3,410

5,850

4,730

6,030

7,250

8,100

8,780

9,300

9,560

*10,800

9,920

8,970

9,230

8,370

7,910

8,040

*8,480

190,100

6,132

7.39

8.52

377,100

June

8.900

8,330

7,480

7,000

6,290

5,350

4,700

4,730

5,350

5,940

5,930

5,460

5,260

5,040

4,890

4,280

3,610

3,280

3,450

5,950

5,550

5,240

*5,220

5,180

3,220

5,120

3,200

3,280

3,420

^iOOO

141,610

4,720

5.69

6.35

280,900

July

2,660

2,470

2,260

2,120

2,110

2,130

2,120

2,040

2,040

2,040

2,040

1,920

1,820

1,720

1,570

1,450

1,370

1,290

1,260

1,230

1,180

1,150

*1,080

1,040

1,020

955

928

901

883

848

806

48,451

1,563

1.8S

2.17

96,100

Aug.

772

748

752

716

692

678

692

66E

640

618

597

583

562

548

569

548

529

516

510

503

496

484

472

466

466

472

490

*522

490

478

460

17,711

571

0.688

0.79

35,130

Sept.

454

442

430

430

430

430

425

419

408

408

408

405

403

398

392

387

381

376

376

376

381

387

392

387

381

376

576

592

419

398

12,065

402

0.484

0.54

23,930

Calendar year 1955: Max 5,850 Mln 235 

Water year 1955-56; Max 10,800 Mln 270

Mean 1,117 cfsm 1.35 In. 19.28 Ac-ft 809,000 

Mean 1,867 Cfsm 2.25 In. 30.63 Ac-ft 1,355,000

Peak discharge (base, 3,700 cfs).--Dec. 23 (6 p.m.) 10,300 cfs (8.51 ft); Apr. 25 (5 a.m.) 

7,120 cfs (6.90 ft); May 24 (6 p.m.) 11,200 cfs (8.76 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basi.3 of weather records and records for nearby 

s'treams.

b Stage-discharge relation affected by Ice.
140 BOISE RIVER BASIN

South Pork Boise River near Featherville, Idaho

Location. La t 43°29'40", long 115°18'20", In lot 6, NW£ sec. 19, T. 2 N. , R. 10 E. , o 

right bank 2^ miles upstream from Deer Creek and 8 miles southwest of Featherville.

Drainage area. 635 sq ml.

Records available. April 1945 to September 1956.

Gage. Water-stage recorder. 

Bureau of Reclamation) .

Altitude of gage Is 4,220 ft (from topographic map of

Average discharge. --11 years, 825 cfs (597,300 aore-ft per year).

Extremes. Maximum discharge during year, 7,580 ofs May 24 (gage height, 8.62 ft); minimum, 96 ofs Nov. 16; minimum gage height, 1.33 ft Sept. 19, 20, 21, 27.

1945-56: Maximum discharge, that of May 24, 1956; minimum, 30 ofs Feb. 10, 1949 

(gage height, 0.60 ft), result of snowsllde upstream.

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

Fair. No regulation. Small ranch diversions above station.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Apr. 17 to May 31)

Oct. 1 to May 19 May 20 to Sept. 30

1.6 

1.8 

2.0 

2.5 

3.0

120

170

235

450

720

3.5

4.0 

5.0 

6.0 

7.3

1,030

1,410

2,400

3,600

5,320

1.3 

1.6 

2.0 

2.5

202

298

457

730

3.0 

4.0 

6.0 

8.0

1,100

2,060

4,480

7,390

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

50

51

Total

Mean

Cfsm

In.

Ac-ft

Oct.

197

194

191

185

204

207

207

200

194

197

255

214

204

200

197

191

186

*191

191

191

214

224

210

200

197

204

214

214

214 

263

266

6,398

206

0.524

0.57

12,690

Nov.

221

188

224

232

232

214

210

207

210

282

328

224

179

218

165

130

190

250

270

500

577

*586

290

282

246

266

502

286

274

270

7,855

262

0.415

0.46

15,580

Dec.

263

252

182

170

140

210

250

200

210

200

195

220

250

175

170

290

250

220

280

450

540

1,200

1.700

1,200

900

800

700

640

550

550

510

13,807

445

0.701

0.81

27,590

Jan.

480

460

440

450

*445

415

378

378

328

378

375

555

568

542

582

415

578

337

352

557

550

542

550

510

238

286

310

270

260

282

256

11,005

555

0.559

0.64

21,830

Feb.

224

252

255

260

270

260

*286

266

270

280

500

514

302

282

270

232

228

263

274

270

278

298

290

270

270

266

263

260

263

7,816

270

0.425

0.46

15,500

Mar.

266

266

260

265

260

232

204

242

278

265

228

204

*242

249

232

238

270

302

555

405

460

500

648

846

1,070

1,160

1,010

882

828

RSfi

14,373

464

0.731

0.84

28,510

Apr.

852

816

"846 792

942

956

948

924

981

1,210

1,490

1,610

1,880

2,060

2,460

5,000

3,120

3,160

3,500

5,950

4,520

4,590

4, 720

*4,370

4,000

4,030

5,910

3,690

3,460

3,220

75,787

2,526

3.98

4.44

150,300

May

3,040

3,100

5,190

3,420

3,400

3,310

3,500

5,550

5,260

5,140

5,050

2,800

2,570

2.440

2,540

2,930

3,560

4,470

5,240

5,650

6,100

6,470

*6,820

7.510

6,800

6,170

6,120

5,590

5,330

5,420

'

135,720

4,378

6.89

7.95

269,200

June

6,300

5,920

5,450

4,950

4,680

4,040

*5,540

5,500

5,860

4,220

4,250

3,900

3,740

5,540

5,340

2,950

2,560

2,560

2,460

2,630

2,350

2,170

2,120

2,070

2,040

1,980

1,990

2,000

2,040 

1.850

98,740

3,291

5.18

5.78

195,800

July

1.650

1,510

1,390

1,520

1,280

1,260

1,230

1,170

1,130

1,130

1,110

*1,040

988

955

865

800

744

706

688

670

646

654

595

564

547

522

507

493

512 

484

462

27,556

889

1.40

1.61

54,660

Aug.

440

*428

419

411

407

395

391

583

371

355

339

351

524

520

528

320

309

305

298

291

291

288

274

264

264

271

281

284

284

271

261

10,198

329

0.518

0.60

20,250

Sept.

251

248

242

242

238

258

255

*258

229

255

251

245

258

252

226

225

220

220

214

211

211

214

225

220

220

217

214

217

229 

252

6,873

229

0.561

0.40

13,630

Calendar year 1955: Max 5,650 Mln 130 Mean 571 Cfsm 0.899 In. 12.21 Ac-ft 413,600

Water year 1955-56: Max 7,310 Mln 150 Mean 1,157 Cfsm 1.79 In. 24.56 Ac-ft 825,500

Peak discharge (base. 2.000 efs).--Apr. 23 (2:30 a.m.) 4,960 cfs (6.85 ft); May 24 (12 m.) 

7,580 cfs (8.62 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 16-20, Dec. 6 to Jan. 4, Feb. 3-6, 9-11; discharge estimated 

on basis of recorded range In stage, weather records, records for Boise River near Twin Springs, 

and other nearby streams.
BOISE RIVER BASIN 141

Lime Creek near Bennett, Idaho

Location. Lat 43°25', long 115°16', in SW^NE^ sec. 16, T. IN., R. 10 E., on right bank

0.4 mile upstream from flow line of Anderson Ranch Reservoir, 2 miles upstream from

mouth, and 12 miles northeast of Bennett. 

Drainage area. 131 sq mi.

Records available . June 1945 to October 1956 (discontinued). 

Sage. Water-stage recorder. Altitude of gage is 4,250 ft (from topographic map of

Bureau of Reclamation).

Average discharge. 11 years, 89.8 cfs (65,010 acre-ft per year). 

Extremes. Maximum discharge during year, 858 cfs Apr. 22: maximum gage height, 5.24 ft

Apr. 16; minimum, 6.6 cfs Nov. 2 (gage height, 2.15 ft).

1945-56: Maximum discharge. 1,180 cfs Apr. 19, 1946, Apr. 27, 1952; maximum gage

height, 8.02 ft Feb. 15, 1949 (backwater from snowslide); minimum discharge, 2.5 cfs

Feb. 11, 1949 (gage height, 1.67 ft), result of snowslide upstream. 

Remarks. Records excellent except those below 100 cfs, which are good, and those for

periods of ice effect or no gage-height record, which are fair. No diversion or

regulation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cf am

In.

Ac-ft

Oct.

16

15

14

T4

16

17

17

17

16

17

20

17

17

17

17

17

17

*17

17

17

19

20

19

17

18

19

20

20

20

2±

22

550

17.7

0.135

0.16

1,090

Nov.

19

14

22

22

22

19

20

20

21

26

27

17

b!6

b!5

b^S

b!7

b21

b25

29

38

*62

34

27

27

26

28

34

32

29

27

749

25.0

0.191

0.21

1,490

Dec.

27

22

b20

b!9

bl£

b21

b25

b22

b23

b23

27

30

b28

b24

b25

b27

30

27

33

40

44

173

510

344

192

154

141

102

72

b80

b80

2,403

77.5

0.592

0.68

4,770

Jan.

76

70

69

70

*69

63

60

55

53

58

55

54

57

53

64

99

88

81

78

84

73

70

70

59

55

b56

b58

b54

a45

a43

a4i

1,980

63.9

0.488

0.56

3,930

Feb.

a40

a43

a45

a50

a52

a52

*b51

b48

b49

b52

b54

58

59

58

51

b41

b43

b45

b46

46

52

53

51

48

48

47

46

47

48

1,423

49.1

0.375

0.40

2,820

Mar.

47

48

48

48

48

40

47

57

47

47

43

47

*59

49

47

49

53

62

72

83

93

105

134

167

214

p«O gof

20l>

197

190

192

194

2,965

95.6

0.730

0-.84

5,880

Apr.

194

187

185

199

232

229

234

237

262

337

450

523

579

632

700

740

652

664

692

704

740

772

800

*760

696

705

672

607

566

537

15,487

516

3.94

4.40

30,720

May

513

506

510

534

517

493

483

464

441

429

416

376

352

334

552

546

567

392

438

486

503

493

*496

537

486

454

467

404

382

355

346

15,652

440

5.56

3.88

27,080

June

343

323

297

274

249

225

*202

190

180

175

165

156

146

140

142

144

131

117

111

113

109

101

95

91

84

80

75

72

67

65

4,662

155

1.18

1.32

9,250

July

64

IT

61

58

55

52

51

50

47

46

45

*45

44

43

43

42

40

38

38

38

37

42

35

34

33

32

32

32

34

30

1,354

43.0

0.328

 0.38

2,650

Aug.

30

*30

30

30

30

30

30

30

29

28

28

27

26

26

28

a27

a27

a26

a26

a25

a25

a24

a24

a23

a23

a25

a27

a27

a25

a24

a24

834

26.9

0.2O5

0.24

1,650

Sept.

a24

a24

a23

a23

a23

a23

*23

24

22

23

25

24

24

24

23

22

22

22

23

23

24

25

25

25

25

25

25

27

"yS 29 

C.Q

722

24.1

0.184

0.20

1,430

Calendar year 1955: Max 262 Min 10 Mean 53.8 Cfsm 0.411 In. 5.57 Ac-ft 38,950

Water year 1955-56: Max 8OO Min 13 Mean 128 Cfsm O.977 In. 13.27 Ac-ft 92,760

Peak discharge (base. 250 cfs).--Dec. 25 (5 a.m.) 660 cfs (4.97 ft); Mar. 26 (1 a.m. ,m.) 242 cfs

(5.65 ft); AprT 22 (11 p.m.) 858 cfs (5.15 ft); May 24 (4:50 a.m.) 600 cfs (4.67 ft). 

* Discharge measurement made on this day. 

~ No gage-height record; discharge estimated on basis of weather records, recorded range in

;e, and records for Fall Creek near Anderson Ranch Dam, South Fork Boise River near Feather-

.e, and other nearby streams.

stag

ville, and other nearby streams.

b stage-discharge relation affected by i

Discharge, in cubic feet

Day

1 

2 

5

4 

5

Total

Oct.

27 

27 

27 

27 

27

Day

6 

7 

8 

9 

10

Oct.

27 

27 

27 

50 

34

Day

11

12 

13 

14 

15

Oct.

50 

44 

56 

54 

52

Day

16 

17 

18 

19 

20

per second^ 1956

Oct.

52 

51

*51 

a32 

a51

Day

21 

22 

25 

24 

25

Oct.

a50 

a 50 

a50 

a31 

a31

Day

26 

27 

28 

29 

30 

31

Cubic feet p 

Runoff In lr 

Runoff in ac

er second per square mile 

ches

Oct.

a28 

a58 

a 51 

a29 

a55 

a56

982 

51.7 

0.242 

0.28 

1,950
142 BOISE RIVER BASIN

Fall Creek near Andersen Ranch Dam, Idaho

Location. Lat 43°26 I 00", long 115°23'10", in SE£ sec. 9, T. 1 N., R. 9 E., on right bank

 li miles downstream from Mill Creek and 6 miles northeast of Anderson Ranch Dam.

Drainage area. 55.3 sq mi.

Records available. April 1945 to October 1956 (discontinued).

Gage. Water-stage recorder. Altitude of gage Is 4,350 ft (from topographic map of Bureau

of Reclamation).

Average discharge.--11 years, 72.7 cfs (52,630 acre-ft per year). 

Extremes. Maximum discharge during year, 794 cfs Apr. 21 (gage height, 5.50 ft); maximum

 gage height, 5.89 ft probably on Feb. 4 (ice jam); minimum discharge, 9.9 cfs Nov. 2 

(gage height, 2.50 ft), but may have been less during period of ice effect.

1945-56: Maximum discharge, 948 cfs Apr. 27, 1952 (gage height, 6.25 ft); minimum, 

1.6 cfs Feb. 9, 1949 (gage height, 1.94 ft), result of snowslide upstream.

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

which are fair. No diversion or regulation.

Rating tables, October 1955 to October 1956, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Apr. 19-21)

Oct. 1 to Apr. 18 Apr. 19 to Oct. 31

2.5 9.0

2.6 12

2.8 21

3.0 38

3.2 63

3.6 

4.0 

4.4 

4.8

127

209

317

445

2.6 

2.8 

3.0 

3.2 

3.6

4.0 

4.5 

5.0 

5.5

237

422

626

842

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

13

13

13

12

14

14

14

14

14

14

17

14

13

13

12

12

*12

12

12

12

14

13

13

13

13

14

14

14

14 

20

16

422

13.6

0.246

0.28

837

Nov.

14

b!3

14

15

15

14

14

14

15

32

22

16

b!4

b!3

bll

b!4

*b!8

b21

b24

28

43

*29

25

24

b24

26

54

42

36

33

677

22 . 6

0.409

0.46

1,340

Dec.

30

b26

b21

b20

b!8

b20

b22

b20

b22

b21

22

29

26

b22

b23

b25

26

26

26

27

31

b!61

369

25T

160

120

97

*77

b66 

b64

62

1,930

62.3

1.13

1.30

3,830

Jan.

56

54

b50

50

49

46

43

39

b38

38

38

37

37

34

M

"77 104

69

62

62

58

56

54

48

b43

b44

b46

b42

b40 

b37

b34

1,553

50.1

'0.906

1.04

3,080

Feb.

b32

b34

b36

b38

b59

*b38

b37

b34

b34

b35

b36

36

34

34

32

b29

b30

b31

b32

b32

33

32

31

30

30

30

30

29

29

957

33.0

0.597

0.64

1 , 900

Mar.

9

9

0

9

9

b 7

b 8

9

8

7

8

*b 6

T

6

6

7

31

37

45

51

55

62

84

125

166

174

144

122

120 

127

122

1,910

61.6

1.11

1.28

3,790

Apr.

116

107

106

123

148

142

146

142

162

205

254

284

323

351

406

402

399

428

499

606

710

745

685

643

*569

593

573

524

474 

446

11,311

377

6.82

7.61

22,440

May

430

418

434

446

434

426

430

442

434

414

399

364

337

322

337

375

414

466

507

528

536

552

*528

540

495

462

466

422

399

399

410

13,566

438

7.92

9.12

26,910

June

406

38T

368

337

292

254

*240

240

247

250

244

234

222

204

202

185

162

150

146

144

130

122

115

109

102

95

91

88

83

BO_

5,929

198

3.58

3.99

11,760

July

77

7^

71

69

66

63

61

58

56

53

51

50

*49

48

45

43

41

39

38

36

36

35

33

31

31

30

30

30

32

29

28

1,435

46.3

0.837

0.97

2,850

Aug.

27

2T

*26

25

24

23

23

23

22

22

21

20

20

20

21

20

20

19

19

19

18

18

18

17

17

18

20

20

19

18

641

20.7

0.374

0.43

1,270

Calendar year 1955: Max 369 Mln 11 Mean 46.6 Cfsm 0.843 In. 11.44 Ac-ft 33

Sept.

18

re

17

18

17

17

16

16

*16

16

17

17

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

17 

17

493

16.4

0.297

0.33

978

760

Water year 1955-56: Max 745 Mln 11 Mean 112 Cfsm 2.03 In. 27.45 Ac-ft 80,980

Peak discharge (base, 500 cfs).--Dee. 23 (3 p.m.) 438 

(5.50 ft); May 22 (8 p.m.) 610 cfs (4.96 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

(4.7B ft); Apr. 21 (7 p.m.) 794 cfs

Discharge, In cubic feet per second, 1956

Day

1

3

4 

5

Oct.

16 

T6 

16

16 

16

Day

6

7 

8 

9

10

Oct.

16 

16 

17 

19 

20

Day

11 

12 

13

14 

15

Oct.

28 

23 

20 

19 

19

Day

16 

17 

18 

19 

20

Oct.

19

*18 

a!8 

a!9

a!8

Day

21 

22 

23 

24 

25

Oct.

a!7 

a!7 

a!8 

a!8 

a!8

Day

26 

27 

28 

29 

30 

31

Mean . . - - . . - - - . . . - . - ................................

Cubic feet j 

Runoff In Ir 

Runoff In ac

er second per squai

re-feet. ................................................

Oct.

a!6 

a21 

a!8 

a!7 

a20 

a21

18.4 

0.333 

0.38 

1,130

* Discharge measurement made on this day. 

a No gage-height recordj discharge estimated on basis of weather records, 

records for South Pork Boise River near Peathervllle, and other nearby 

streams.
BOISE RIVER BASIN 143 

Little Camas Canal at heading, near Bennett, Idaho

Location. Lat 43°21'30", long 115°23'00", in sec. 9, T. 1 S. , R. 9 E., on right bank 

400 ft downstream from Little Camas Reservoir, 4 miles northeast of Bennett, and 

22 miles northeast of Mountain Home.

Records available. June to November 1917, April 1924 to September 1956.

Sage. Staff gage read once daily. Datura of gage is 4,926 ft above mean sea level (datura 

of Mountain Home Irrigation District). June 1 to Nov. 29, 1917, water-stage recorder 

and Apr. 16 to May 11, 1924, staff gage, at datum 6.00 ft lower. May 12, 1924, to 

Sept. 30, 1929, water-stage recorder at present datum.

Extremes. 1917. 1924-56: Maximum daily discharge, 77 cfs Apr. 27-30, May 1, 3, 9, 1924; 

no flow during nonirrigatlon seasons. /

Remarks. Records good except those for period of backwater from moss, which are fair. 

Canal diverts from Little Camas Reservoir (South Fork Boise River drainage) in sec. 9, 

T. 1 S., R. 9 E., and discharges into Long Tom Creek basin, where water is stored in 

Long Tom Reservoir for irrigation of 5,000 acres of land near Mountain Home. No diversion above station. Flow regulated by Little Camas Reservoir.

Cooperation. Gage readings furnished by Mountain Home Irrigation District.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

IE

13

14

15

16

17

18

19

£0

El

ZZ

£3

.24

£5

£6

£7

28

£9

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

_ _____

0

0

0

Mar.

0

0

0

Apr.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

7

21

25

25

25

2_8

131

4.4

260

May

30

30

32

33

14

0

0

0

0

0

0

0

0

0

0

11

18

18

19

19

25

36

*38

44

44

44

44

44

47

50

50

690

22.3

1,370

June

50

50

50

50

50

50

*50

54

57

57

59

60

60

60

60

60

60

*59

60

59

59

58

59

58

58

58

57

57

56

56

1,691

56.4

3,350

July

56

54

52

51

51

50

51

50

51

51

51

*51

51

51

51

51

50

49

49

49

49

49

49

49

47

46

46

46

22

0

0

1,423

45.9

2,820

Aug.

8

*4T

55

58

60

61

61

61

61

60

60

60

59

59

59

59

59

58

58

58

58

58

58

58

57

57

57

57

57

57

56

1,745

56.3

3,460

Sept.

56

55

55

55

55

54

*54

54

54

53

53

53

53

53

53

20

0

0

0

0

0

0

0

0

0

0

0

0

0

0

830

27.7

1,650

Calendar year 1955: Max 55 Mln 0 Mean 8.1 Ac-ft 5,830

Water year 1955-56: Max 61 Mln 0 Mean 17.8 Ac-ft 12,910

* Discharge measurement made on this day. 

Note. Backwater from moss June 20 to July 29.
144 BOISE RIVER BASIN

Andersen Ranch Reservoir at Andersen Ranch Dam, Idaho

, R. 8 E., on inlet 

miles downstream from

Location. Lat 43°21'30", long 115 "27 '10", in SE£ sec. 1, T. 1 S, 

structure of outlet works of dam on South Pork Boise River, 1 

Camas Creek and 3 miles northwest of Bennett (Dixie Store).

Drainage area. 980 sq mi, approximately.

Records available. December 1945 to September 1956.

Gage. Staff gage or supplementary pressure gage in powerhouse read once daily. Datum of 

gage is at mean sea level (surveys by Bureau of Reclamation).

Extremes . Maximum contents observed during year, 472,800 acre-ft June 1 (elevation, 

4,197.81 ft); minimum observed, 145,000 acre-ft Mar. 23 (elevation, 4,103.22 ft).

1945-56: Maximum contents observed, that of June 1, 1956; no usable contents prior 

to Jan. 27, 1946; minimum since full capacity was attained June 21, 1951, that of 

Mar. 23, 1956.

Remarks . Reservoir is formed by earth-fill dam. Storage began Dec. 15, 1945. Usable

contents, 464,200 acre-ft between elevations 3,992 and 4,196 ft (top of spillway gates). 

Elevation of spillway crest, 4,174 ft, and of top of dam, 4, 206 ft. Dead storage below 

3,992 ft is 28,980 acre-ft. Figures given herein represent usable contents.' Water is 

used for irrigation of land in Boise Valley.

Cooperation. Gage readings and capacity table furnished by Bureau of Reclamation.

Capacity table, water year 1955-56 (elevation, in feet, and contents, in acre-feet)

4,103.0

4,106.0

4,110.0

4,115.0

4,120.0

144,400

151,600

161,500

174,400

187,700

4,125.0

4,130.0

4,135.0

4,140.0

4,145.0

201,400

215,700

230,500

246,100

262,300

,150.0 

,155.0 

,160.0 

,165.0 

,170.0

279,100

296,500

314,400

332,800

352,000

4,175.0

4,180.0

4,185.0

4,190.0

4,198.0

371,800

392,400

413,900

436,300

473,700

Contents, in acre-feet, at about 8 a.m. , water year October 1955 to September 1956

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

SI

Oct.

271.700 

271,100 

271,000 

269,200 

267,700

266,200 

264,100 

261,100 

258,500 

255,700

253,300 

250,500 

247,600 

247,000

247,100

247,700 

248,000 

248,100 

248,300 

248,500

248,600 

248,800 

249,300 

249,600 

249,700

250,100 

250, 500 

251,000 

251,400 

251,700 

252,500

4,142.00 

-20,700

Nov.

252,500 

252,700 

253,200 

253,600 

254,000

254,400 

254,800 

254,500 

255,000 

255,400

255,700

255,100 

254,200 

253,400 

252,600

251,300 

249,900 

249,300 

248,900

249,600

251,100 

251,500 

251,100 

251,100 

251,900

251,500 

251,800 

252,500 

251,800 

251,300

4,141.63 

-1,200

Dec.

251,000 

250,900 

249,400 

249,300 

249,300

249,000 

249,300 

249,300 

248,900 

248,700

248,800 

248,700 

247,100

241,900

239,600 

237,200 

235,900

235,900 

236,700

237,000 

237,300 

241,300 

248,900 

251,500

253,600

253,400 

252,800 

251,800 

249,900 

3249,500

-1,800

Jan.

248,300

248,200 

247,500 

246,800

245,700 

244,600 

244,000 

243,400 

242,100

240,000 

239,400 

238,300

237,000

238,400 

238,000 

236,700 

235,700 

234,200

234,200 

234,500 

235,500 

235,300 

234,600

233,600 

232,900 

229,900 

228,900 

227,200 

225,100

4,133.2 

-24,400

Feb.

214,600

213,400 

211,700 

210,800 

209,400 

208,200

206,200 

205,100 

204,500 

203,400 

200,900

198,600 

196,700 

194,800 

192,600 

190,400

188,500 

186,300 

184,400 

182,300 

180,200

178,000 

176,200 

174,600

175,100

4 J. 15. 28 

-50,000

Mar.

173,800

173,100 

172,500 

171,800 

171,800

171,000 

169,900 

169,200 

168,600 

167,900

167,100 

162,700 

161,500 

160,000 

157,000

155,000 

152,600 

147,800 

147,000 

146,600

145,900 

145,900 

145,000

145,100 

145,400

148,000 

150,400 

151,400 

153,100 

154,100 

155,300

4J.07.50 

-19,800

Apr.

156,100

157,800 

158,500 

159,500 

160,800

161,500 

163,400 

164,700 

166,600 

167,800

169,700 

172,600 

176,100 

180,400 

185,500

192,000 

199,600 

206,500 

213,200 

221,200

229,300 

240,100 

250,800 

260,900 

269,600

277,500 

286,800 

294,600 

302 , 300 

309,900

4,158.77 

+154^00

May

315,200

320,800 

326,500 

332,000 

338,000

343,500 

350,100 

355,600 

360,700 

366,200

370,800 

375,400 

379,000 

383,100 

386,400

389,600 

394,500 

400, 400 

409,300 

418,900

430,200 

442,900 

456,200 

467,700 

471,900

470,700 

470,500 

470,200 

470,700 

471,500 

472,200

4,197.69 

+162,300

June

472,800

472,200 

470,700 

470,400 

471,200

469,300 

465,100 

465,000 

465,500 

466 , 500

466,700 

465,700 

465,300 

465,900 

465,700

465,500 

464,700 

464,100

464,400 

466,600

466,800 

467,600 

465,600 

465,000 

464,300

464,900 

464,900 

465,000 

465,000 

464,900

4,196.15 

-7,300

July

464,400 

464,500 

464,700 

464,600 

464,800

464,600 

464,300 

463,900 

463,500 

462,900

462,600 

461,900 

462,000 

461,700 

462,600

463,900 

463,800 

463,500 

462,800 

461,700

460,600 

459,700 

459,700 

457,900 

457 , 500

456,800 

456,500 

456,100

456,600 

457,800 

457,400

4,194.57 

-7,500

Aug.

457,600 

457,800 

457,800 

458,300 

458,800

459,500

459,500 

459,100 

457,400 

455,000

452,700 

450,100 

448,000 

445, 600 

443,100

441 , 000 

438,800 

436,300 

435, 300 

435,300

433,700 

431 , 900 

430,400 

428,900 

427,600

427,600 

427,600 

425,400 

422,700 

420,900 

418,300

4,186.00 

-39,100

Sept.

415,900 

414,300 

414,400 

414,800 

414,600

414,600 

414,200 

414,600 

415,000 

415,400

415,300 

415,500 

415,900 

416,000 

416,300

416.800 

416,300 

414,100 

412,100 

411,000

409,600 

408,400 

407,900 

408,200 

407,100

405,600 

404, 100 

402,200 

401 , 900 

402,200

4,182.30 

-16,100

Calendar year 1955.................... * +12,200

Water year 1955-56.................... * +129,000

t Elevation, in feet, at end of month. 

* Change in contents, in acre-feet.

a No gage-height record; contents estimated on basis of records of inflow and outflow and records 

for adjacent periods.
BOISE RIVER BASIN 145

South Pork Boise River at Anderson Ranch Dam, Idaho

Location. Lat 43°20' , Iong'll5°29' , in SW-£ sec. 11, T. 1 S., R. 8 E., on right bank 

600 ft upstream from Dixie Creek, 1? miles downstream from Anderson Ranch Reservoir, 

and 2£ miles northwest of Bennett (Dixie Store).

Drainage area. 982 sq mi.

Records available. April 1943 to September 1956 (includes flow of Dixie Creek prior to 

October 1946 and excludes Dixie Creek thereafter).

Gage .--Water-stage recorder. Altitude of gage is 3,850 ft (from topographic map of Bureau 

of Reclamation) .

Average discharge. 13 years, 984 cfs (712,400 acre-ft per year).

Extremes Maximum discharge during year, 9,850 cfs May 25 (gage height, 10.56 ft); minimum, 13 cfs Oct. 16, 17, 24, Nov. 3, 4, 7; minimum gage height, 1.41 ft Oct. 17, Nov. 7.

1943-56: Maximum discharge, that of May 25, 1956; minimum, 0.3 cfs Feb. 16, 1950 

(gage height, 0.99 ft), but may have been less during period of ice effect.

Remarks . Records excellent. Plow of Little Camas Creek stored in Little Camas Reservoir 

(no spill most years) and diverted through Little Camas Canal (see p. 143) for irrigation of about 5,000 acres of land in vicinity of Mountain Home. Plow regulated by 

Anderson Ranch Reservoir (see preceding page) beginning Dec. 15, 1945.

Cooperation. Water-stage recorder inspected by employees of Bureau of Reclamation.

Rating table, water year 1955-56 (gage height, in fe 

and discharge, in cubic feet per second)

2.0 

2.3

12

26

50

86

168

2.6 

3.0 

3.5 

4.0 

5.0

276

450

730

1,050

1,890

6.0 

7.0 

8.0 

9.0 

10.6

2,930

4,190

5,660

7,250

9,920

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9 

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

677 

146

925

1,120

948

1,190

1,580

1,480

1,590 

1,596

1,580

1,580

1,070

296

16

13 

*2lT

160

140

198

164

16

14

237

124

16

14

113

79

16

356

17,665

570

35,040

Nov.

139 

15

13

97

141

16

429

26

14 

330

472

690

802

664

886

810 

*682

587

104

24

463

666

457

26

471

363

26

752

558

713

11,436

381

22,680

Dec.

499 

796

888

26

ITS

316

146

723

592 

132

26

1,140

1,380

1,490

1,510

1.520 

1,350

707

383

252

679

694

918

1,180

762

1,190

1,520

*1,440

1,500

1,480

982

26,337

850

52,240

Jan.

1,200 

468

1,270

1,240

1,190

941

1,150

592

1,210 

1,310

1,160

1,230

1,010

992

78

937 

984

1,260

1,160

1,020

455

134

904

652

1,020

926

,060

,500

,230

,280

,140

30,703

990

60,900

Feb.

1,340 

1,340

1,610

1,560

1,440

*1 , 380

728

1,120

1,110 

1,480

1,210

916

1,250

1,350

1,330

1,450 

1,530

1,620

1,440

1,480

1,410

1,270

1,430

1,410

1,620

1,540

1,280

929

1,070

- -----

38,643

1,333

76,650

Mar.

992 

769

1,040

520

1,06~0

1,220

1,070

986

1,140 

1,200

646

*1,270

1,620

1,510

1,620

,610 

,610

,410

,380

,460

,130

,100

870

,000

,060

,110

,120

842

1,090

952

1,090

35,497

1,145

70,410

Apr.

648 

1,040

932

930

898

1,100

998

666

1,100 

1,270

1,580

1,580

1,350

1,240

1,290

,250 

,220

,400

,660

,670

,680

,690

,560

,700

* ,510

1,540

1,280

1,460

910

1,230

38,382

1,279

76,130

May

1,250 

1,280

1,290

1,360

1,510

1,280

1,280

1,490

1,690 

1,400

1,690

1,520

1,410

1,240

1,400

1,560 

1,470

1,680

1,420

1,670

1,660

1,560

2,210

6,350

*9,770

8,640

8,190

7,170

6,340

6,470

6, 870

94,100

3,035

186,600

June

7,630 

8,000

6,950

5,540

5,700

6,510

5,150

*3,740

4,220 

4,540

5,000

5,040

4,000

3,920

3,890

3,760 

2,940

2,700

1,970

2,460

2,340

3,030

3,180

2,380

2,050

2,160

2,240

2,240

2,270

2,250

117,800

3,927

233,700

July

1.920 

1,660

1,650

1,410

1,630

1,630

1,640

1,580

1,560 

1,570

1,560

1,350

*1,230

838

366

730 

990

1,260

1,230

1,390

1,290

861

1,370

1,190

998

862

791

426

124

750

352

36,218

1,168

71,840

Aug.

400 

388

*379

121

T24

414

708

960

1,520 

1,580

1,600

1,570

1,580

1,600

1,600

1,620 

1,440

1,150

403

1,240

1,210

1,220

1,110

1,130

448

149

1,130

1,580

1,580

1,400

1,590

32,944

1,063

65,340

Sept.

^

141

371

294

562

*40 *56~

*118

272

124

118

118

142

118

115 

1,350

1,280

1,160

862

875

482

124

914

981

926

994

761

199

121

15,464

515

30,670

Calendar year 1955: Max 1,650 Min 4 Mean 715 Ac-ft 519,800

Water year 1955-56: Max 9,770 «ln 13 Mean 1,353 Ac-ft 982,200

Discharge measurement made on this day.
146 BOI5E RIVER BASIN

Arrowrock Reservoir at Arrowrock, Idaho

Location. Lat 43°36', long 115"55' , in E| sec. 13, T. 3 N., R. 4 E. , at dam on Boise 

River at Arrowrock and 14 miles east of Boise.

Drainage area.--3.210 sq mi, approximately. 

Records available. October 1917 to September 1956.

Gage. Staff graduated on face of darn read once daily. Datum of is at mean sea level

(surveys of Bureau of Reclamation).

Extremes. Maximum contents observed during year, 291,200 acre-ft Jan. 18 (elevation, 

3,217.5 ft); minimum observed, 2,910 acre-ft Sept. 23 (elevation, 3,015.0 ft).

1917-56: Maximum contents observed, 301,200 acre-ft May 29, 1948 (elevation, 

3,219.1 ft); no usable contents during period in each of several years when sluice 

gates were open and natural flow was passing through reservoir.

Remarks. Reservoir is formed by gravity-section concrete-arch dam completed in 1915 and 

raised 5 ft in 1937; storage began in 1915. Capacity, 286,600 acre-ft between elevations 2,974 ft (9.5 ft above sluice-gate sill) and 3,216 ft (highest position of 

movable crest of spillway). Silt deposition at dam has raised the lower storage level 

and decreased the capacity of the reservoir. Prior to Oct. 1, 1952, contents in publications of the Geological Survey applied from original contents table and no silt 

corrections were made. Beginning Oct. 1, 1952, contents applied from revised table, 

which is the original table reduced by amounts varying from 347 acre-ft at elevation 

2,974 ft to 5,000 acre-ft at elevation 3,085 ft and above. Water is used for irrigation of lands in Boise Valley.

Cooperation. Gage readings and revised capacity table furnished by Bureau of Reclamation.

Capacity table, water yeai 1955-56 (elevation, in feet, and contents, 

in acre-feet)

3,015.0

3,020.0

3,030.0

3,040.0

3,050.0

3,060.0

3,080.0

2,910

3,800

5,870

8,270

11,920

16,770

30,000

3,100.0

3,120.0

3,140.0

3,160.0

3,180.0

3,200.0

3,218.0

49,000

75,000

107,500

146,000

189,500

240,000

292,800

e-feet, at about 8 a.m., water year October 1955 to September 1956

Day Oct. Apr. July Aug. Sept.

247,000

246,701

246,200

245,600

245,000

245,000

245,000

244,500

244,500

175,800

169,0' 

162,400 

155,900 

149,200

143,600

137,800

132,800

127,400

123,200

121,100

120,500

63,190

84,740

,400

,200

,000

,000

,100

,600

, 900

,600

,600

,900

163,200

161,300

158,800

157,100

155,200

154,800

154,400

153,400

153,600

154,000

153,100

153,100

151,500

148,900

146,000

144,000 

145,gQO

287,200

285,000

282,300

281,700

281,100

280,500

279,900

279,000

277,200

182,400

144,400

148,500

154,400

228,300

245,600

262,700

274,500

280,500

285,400

216,100

211,000

205,

200,100

194,100

188,600

3,080.1 3,130.1 3,207.8 3,195.0 3,202.9 3,177.0 3,169.0 3,215.6 3,217.1 3,179.6 3,079.0 3,045.0 

+8,960 +60,530 +171,450 -55,100+21,100 -65,500 -17,700+120,500 +4,600 -101,400 -159.580 -19,550

t Elevation, in feet, 

t Change in contents,

of month, 

e-feet.
BOISE RIVER BASIN 147

Bannock Creek near Idaho City, Idaho

Location. Lat 43°48'30", long 115°46'30", in SE^SW^ sec. 32, T. 6 N., R. 6 E., on

right bank three-quarters of a mile upstream from South Pork, 2£ miles upstream from

mouth, and 3 miles southeast of Idaho City. 

Drainage area. 4.5 sq mi, approximately.

Records available. January 1939 to November 1941, December 1950 to September 1956. 

Gage.--Water-stage recorder and broad-crested wooden control with V-notch for low stages.

Altitude of gage is 4,090 ft (from topographic map).

Average discharge.--7 years (1939-41, 1951-56) 2.11 cfs (1,528 acre-ft per year). 

Extremes. Maximum discharge during year. 31 cfs Dec. 23 (gage height, 1.91 ft); minimum,

0.2 cfs Nov. 16 (gage height, 0.24 ft).

1939-41, 1950-56: Maximum discharge, 33 cfs (revised) Apr. 26, 1952 (gage height,

1.95 ft); maximum gage height, 2.03 ft Feb. 6, 1952 (backwater from ice); minimum

discharge, 0.07 cfs Aug. 23, 1940; minimum gage height, 0.06 ft Nov. 29, 1952

(result of siphon action at weir).

Revisions. The maximum discharge for the water year 1952 has been revised to

33 cfs Apr. 26, 1952 (gage height, 1.95 ft), superseding figure published in WSP 1247. 

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

and~those below 1.0 cfs, which are fair. No diversion or regulation. 

Revisions.--Revised figures of discharge, in cubic feet per second, for high water period

in the water year 1952, superseding those published in WSP 1247, are given herewith:

1952-Con. 

Apr. 27...... 31

28. ..... 29

29...... 24

30...... 20

Month

Calendar year 1952 ............

Cfs -days

429.4

1,137.0 

1,090.6

Maximum

31 

31 

31

Minimum

2.0 

0.5

0.5

Mean

14.3 

3.11 

2.98

Per 

square 

mile

3.18 

0.691 

0.662

Runoff

Inche s

3.55 

9.39 

9.02

Acre-feet

852 

2,260 

2,160

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Mar. 25 26 to Sept. 30

0.3 

.6 

1.0 

1.6 

3.3

1.0 

1.2 

1.4 

1.7

1.0 

1.2 

1.4 

1.6

5.7 

8.8

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

0.3

.4

.4

.4

.5

.4

.4

.4

.4

.6

.6

.5

.5

.5

.5

.4

.4

.4

.4

.5

*.5

.5

.5

.5

.5

.6

.5

.5

.5

.7

.5

14.7

0.47

0.104

0.12

29

Nov.

0.5

.5

.5

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

_A

b.4

b.5

.5

.7

1.9

1.4

1.0

.8

.8

.7

.9

1.4

1.0

.9

*.9

21.4

0.71

0.158

0.18

42

Dec.

0.9

.8

T8

.8

b.8

.9

.8

.8

.8

.8

.8

.9

.8

b.8

.9

.9

.9

.8

2.3

3.7

3.6

15

*21

17

12

9.4

7.9

6.7

b5.9

5.5

5.1

130.1

4.20

0 . 933

1.08

258

Jan.

4.6

4.3

4.1

3.9

3.9

3.5

3.4

3.3

b3.1

3.0

2.8

2.8

2.8

2.4

4.5

4.8

4.5

4.4

4.4

4.4

4.3

4.3

4.0

3.9

*b3.5

3.4

3.5

b3.0

b2.6

b2.3

b2_a

111.8

3.61

0.802

0.92

222

Feb.

1.8

bl.8

bl.4

1.3

bl.3

bl.3

bl.3

bl.3

bl.3

bl.4

bl.5

bl.5

bl.5

bl.4

bl.3

bl.3

bl.3

bl .3

bl.3

bl.3

bl.3

bl.3

bl.3

bl.3

bl.3

bl.3

bl.3

bl.3

bl.3

------

39.6

1.37

0.304

0.33

79

Mar.

bl.3

bl.3

bl.3

bl.3

bl.2

bl.2

bl.2

*bl.2

1.1

1.1

bl.O

biTT

1.2

1.1

1.1

1.2

1.2

1.3

1.5

1.6

1.8

2.4

3.3

5.1

7.2

7.7

7.7

7.7

7.6

7.7

7.7

90.4

2.92

0.649

0.75

179

Apr.

7.7

7.6

7.4

7.6

*7.6

7.4

7.2

7.1

7.1

7.6

8.1

9.0

9.2

10

11

12

all

a!2

a!2

a!3

a!5

al7

a!8

a!7

*16

19

18

17

15

14

347.6

11.6

2.58

2.87

689

May

12

11

9.9

9.9

9.2

9.0

9.2

9.0

8.4

8.2

8.6

7.9

7.4

7.1

6.6

6.5

6.4

6.6

7.2

7.2

7.2

7.2

7.2

7.4

6.8

6.2

6.5

5.8

*5.7

5.7

5.6

238.6

7.70

1.71

1.97

473

June

5.3

5.1

5.1

4.8

4.7

4.4

4.4

4.7

4.7

4.4

4.2

4.2

3.8

3.8

4.4

4.2

3.6

*3.0

2.8

2.8

2.8

2.6

2.6

2.6

2.5

2.4

2.3

2.2

272

2.2

108.8

3.63

0.807

0.90

216

July

2.1

2.1

.0

.9

.8

.8

.7

.6

.5

.5

.3

.4

.4

.3

.3

.2

.2

.1

.1

.1

.1

.0

1.0

*.9

.9

.9

.9

.9

.9

.JL

.8

40.5

1.31

0.291

0.33

80

Aug.

0.8

.8

.8

.8

.8

.8

.8

.7

.7

.7

.7

.6

76

.7

.7

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.7

.7

*.6

.6

. 6

20.8

0.67

0.149

0.17

41

Sept.

TB- 0.6

.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

1

.7

18.3

0.61

0.136

0.15

36

Calendar year 1955: Max 21 Win 0.2 Mean 1.61 Cfsm 0.358 In. 4.88 Ac-ft 1,170

Water year 1955-56: Max 21 Mln 0.3 Mean 3.23 Cfsm 0.718 In. 9.77 Ac-ft 2,340

Peak discharge (base, 4.5 cfs). Dec. 19 (12 p.m.) 5.2 cfs (0.93 ft); Dec. 23 (3 p.m.) 31 cfs 

(1.91 ft); JanT 15 (7 a.m.) 5.5 cfs (0.95 ft); Apr. 26 (12 m.) 22 cfs (1.65 ft); May 19 (6:30 p.m.) 

11 cfs (1.29 ft); May 24 (9 a.m.) 9.9 cfs (1.25 ft); May 29 (9 p.m.) 8.1 cfs (1.16 ft); June 15 

(12 m.) 5.8 cfs (1.01 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for stations 

at Moore Creek above Robie Creek, Roble Creek near Arrowrock, and other nearby streams.

b Stage-discharge relation affected by ice.
148 BOISE RIVER BASIN

Moore Creek above Robie Creek, near Arrowrock, Idaho

Location. Lat 43°38 I 45", long 115°58'45", in SE£ sec. 28, T. 4 N., R. 4 E., on left 

bank at State roadside park, 1.7 miles upstream from Robie Creek, 5 miles northwest 

of Arrowrock, and 5.8 miles upstream from mouth.

Drainage area. 399 sq mi.

Records available. October 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 3,120 ft (from topographic map).

Average discharge.--6 years, 341 cfs (246,900 acre-ft per year).

Extremes.--Maximum discharge during year, 5,440 cfs Dec. 23 (gage height, 9.55 ft); minimum, 22 cfs Nov. 15 (gage height, 1.94 ft)*

1950-56: Maximum discharge, that of Dec. 23, 1955; minimum, 16 cfs Sept. 2-11, 

1955; minimum gage height, 1.86 ft Sept. 6, 7, 1955.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. Diversions above station and from Robie Creek for irrigation 

of about 900 acres.

Rating tables, water year 1955-56, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Feb. 14, 15)

Oct. 1 to Feb. 21 Feb. 22 to Sept. 30

2.1 

2.4 

2.7 

3.0 

3.5

31

60

112

186

340

4.0 

5.0 

6.0

7.0 

9.0

560 

1,150 

1,650 

2,6SO 

4,700

2.0 

2.3 

2.6 

2.9 

3.2

107

173

260

3.6 

4.0 

5.0 

6.0 

6.8

405

575

1,150

1,650

2,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

34

34

34

33

37

42

41

40

41

44

63

59

52

50

48

46 

44

44

44

 44

44

44

43

43

43

46

51

52

52

60

78.

1,430

46.1

0.116

O.13

2,840

Nov.

70

57

5S

62

70

66

60

59

58

66

96

85

54

68

b35

b45 

b80

bllO

b!25

b2OO

b230

178

131

122

106

112

217

211

173

150

3,154

105

0.263

0.29

6,260

Dec.

 150

131

106

110

61

85

126

102

102

104

106

117

136

87

80

114 

134

136

b!88

b482

555

 2,790

 4.350

3,200

1,620

1,110

880

660

47O

436

42S

19,143

618

1.55

1.78

37,970

Jan.

400

364

329

322

333

304

288

278

240

255

246

234

252

246

456

"956 1.190 

814

718

664

590

565

616

535

 396

440

452

326

348

372

275

13,804

445

1.12

1.29

27,380

Feb.

b260

b240

b250

260

260

250

270

270

270

280

290

300

280

 249

217

b!70 

b210

b220

b220

b230

b240

248

251

229

229

220

214

 209

212

7,048

243

0.609

0.66

13,980

Mar.

209

236

267

254

248

226

206

248

241

229

195

203

248

214

223

244 

296

401

557

730

638

940

1,350

1,770

2.090

2,060

*1,700

1,470

1,370

1,350

1,300

21,915

707

1.77

2.04

43,470

Apr.

1,260

1,190

1.170

1,190

1,310

1,230

1,260

1,210

1,300

1,540

1,730

1,750

1,860

1,950

2,140

2.550 

2,190

2,040

2,070

2,070

2,070

2,030

1,990

 1,780

1,600

1,920

1,890

1,720

1,520

1,350

50,680

1,689

4.23

4.72

100,500

May

1,210

1,140

1,080

1,140

1,140

1,090

1,090

1,120

1,070

1,080

1,160

1,090

1,000

928

898

910 

964

1,050

1,130

1,230

1,270

1,300

1,300

*1,480

1,370

1,300

1,370

1,220

1,140

1,120

1,090

35, 480

1,145

2.87

3.31

70,370

June

1,060

994

934

874

802

708

640

620

615

610

595

562

539

521

630

640 

530

465

437

457

425

385

 365

365

335

314

296

280

270

254

16,522

551

1.38

1.54

32,770

July

lil

232

226

214

197

189

178

170

163

153

146

141

141

137

135

126

118

113

107

102

101

96

*88

84

80

77

77

77

75

73

71

4,128

133

0.333

0.38

8,190

Aug.

69

67

67

67

67

65

63

62

60

60

59

57

54

54

55

55 

53

51

50

50

49

47

46

45

45

45

50

*54

54

52

50

1,722

55.5

0.139

0.16

3,420

Sept.

48

47

46

46

46

46

46

45

44

44

44

44

44

43

43

42 

42

42

43

45

46

47

47

47

47

48

50

53

57

56

1,388

46.3

0.116

0.13

2,750

Calendar year 1955: Max 4,330 Mln 16 Mean 227 Cfsm 0.569 In. 7.73 Ac-ft 164,600

Water year 1955-56: Max 4,330 Mln 33 Mean 482 Cfsm 1.21 In. 16.43 Ac-ft 349,900

e (base.

26 (2 t

cfs (6.6

800 efs). Dee. 23 (8 p.m.) 5,440 cfs (9.55 ft); Jan. 16 (1O a.m.) 1,300 cfs

._,--. _._., -, - --_ (6.43 ft); Apr. 16 (2 p.m.) 2,420 cfs (6.71 ft); Apr. 26 

.) 2,350 cfs (6.62 ft); May 24 (5 p.m.) 1,590 cfs (5.63 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 28, Feb. 4-13, Aug. 30 to Sept. 30; discharge estimated on basis 

of weather records, recorded range In stage, and records for Robie Creek near Arrowrock, Bannock 

Creek near Idaho City, and Boise River near Twin Springs.
BOISE RIVER BASIN 149

Robie Creek near Arrowrock, Idaho

Location. Lat 43°37'30", long 115°59'45", in N£ sec. 5, T. 3 N. , R. 4 E., on left bank 

0.5 mile upstream from mouth and 5 miles northwest of Arrowrock.

Drainage area. 15.8 sq mi.

Records available. October 1950 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 3,080 ft (from 

topographic map).

Average discharge. 6 years, 9.20 cfs (6,660 acre-ft per year).

Extremes. Maximum discharge during year, 163 cfs Dec. 23 (gage height, 2.67 ft); minimum, 

0.6 cfs Aug. 22; minimum gage height, 0.83 ft Nov. 13, Aug. 22.

1950-56: Maximum discharge, that of Dec. 23, 1955; minimum, 0.1 cfs several days in 

August and September 1955; minimum gage height, 0.58 ft Aug. 11, 30, 31, 1955.

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

which are fair. Small diversions above station for irrigation.

Rating table, water year 1955-56, except periods of ice effect ( 

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

0.8 

.9 

1.0 

1.2 

1.4

0.7 

1.4 

2.5 

6.0

1.6 

1.8 

2.0 

2.2 

2.4

52

78

110

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

1.3

1.2

1.1

T73

1.8

1.6

1.6

1.5

1.4

2.1

3.1

2.3

2.2

2.1

2.0

1.6

1.6

1.6

1.5

 1.5

1.5

1.5

1.5

1.5

1.6

2.0

1.8

1.8

1.7

2.5

2.4

54.2

1.75

0.111

0.13

108

Nov.

2.3

2.2

2.2

2.4

2.4

2.2

2.1

2.1

2.0

3.1

2.8

2.2

1.7

2.1

1.2

al.5

a2.5

a3.5

34.5

a6.5

a8.0

36.0

a4.5

a4.0

a3.5

a4.0

a7.0

a6.5

a6.0

*5.4

106.4

3.55

0.225

0.25

211

Dec .

5.4

4.8

3.8

3.1

3.0

4.4

3.7

b3.5

3.4

3.2

3.2

3.7

3.7

b3.0

b2.6

b3.0

b3.2

3.2

3.7

5.0

7.4

*40

98

51

26

a23

a!9

a!5

11

8.7

8.2

380.1

12.3

0.778

0.89

754

Jan.

7.7

7.2

6.5

6.2

7.7

7.0

6.7

6.7

6.2

6.2

5.8

5.8

6.5

6.2

19

26

22

20

18

17

16

16

19

17

a!5

*15

14

b!2

b!3

12

bll

374.4

12.1

0.766

0.88

743

Feb.

bll

blO

*blO

9.0

8.7

7.9

7.7

7.4

7.4

7.0

7.2

12

10

9.0

8.2

b6.5

b7.0

b7.5

7.7

7.7

7.7

8.2

9.0

8.2

8.4

8.7

8.4

*8.2

8.2

243.9

8.41

0.532

0.57

484

Mar.

8.4

9.6

11

11

11

10

10

10

10

10

10

11

10

10

11

12

16

22

30

37

38

40

49

64

70

71

*57

42

42

41

39

823.0

26.5

1.68

1.94

1,630

Apr.

38

36

35

35

36

34

34

32

32

36

40

43

45

48

51

58

54

52

51

50

49

49

46

*40

38

48

44

39

36

33

1,262

42.1

2.66

2.97

2,500

May

30

1TT

25

28

25

23

24

22

21

22

25

23

22

20

19

17

16

16

15

14

12

11

11

*12

11

11

13

11

9.0

79 I-* 

550.4

17.8

1.13

1.30

1,090

June

6.7

6.5

6.7

6.7

7.2

6.2

6.0

5.4

5.4

5.2

5.4

5.6

6.0

6.7

10

8.4

7.0

5.8

5.6

5.8

5.2

4.8

*4.5

4.4

3.6

3.2

3.0

2.6

2.6

2.2

164.4

5.48

0.347

0.39

326

July

2.0

2.0

2.1

2.1

2.0

2.0

2.0

2.0

1.8

1.6

1.5

1.6

1.7

2.0

2.0

1.7

1.5

1.4

1.4

1.3

1.3

1.3

*1.2

1.2

1.1

1.1

1.1

1.0

1.0

1.0

.1!

47.9

1.55

0.098

0.11

95

Aug.

0.9

.9

1.0

1.0

1.0

1.2

1.3

1.2

1.3

1.3

1.4

1.0

1.0

1.0 1.1

1.1

1.0

.9

.9

.9

.9

jJL

.8

.8

.8

.9

1.1

*1.3

1.3

1.2

1.3

32.6

1.05

0.066

0.08

65

Sept.

1.3

1.2

1.2

1.1

1.1

1.0

1.0

1.0

1.1

1.1

1.1

1.2

1.1

1.1

1.1

1.1

1.1

1.0

1.0

1.1

1.3

1.6

1.7

1.7

1.6

1.6

1.5

1.8

2.1

2.0

38.9

1.30

0.082

0.09

77

Calendar year 1955: Max 98 Min 0.1 Mean 5.08 Cfsm 0.322 in. 4.35 Ac-ft 3,680

Water year 1955-56: Max 98 Min 0.8 Mean 11.1 Cfsm 0.703 In. 9.6O Ac-ft 8,080

Peak discharge (base. 55 cfs).--Dec. 25 (4 p.m.) 163 cfs (2.67 ft); Mar. 25 (7 p.m.) 80 cfs 

(2.19 ft); AprT 16 (8 a.m.) 62 cfs (2.08 ft); Apr. 26 (9:30 a.m.) 68 cfs (2.13 ft); May 4 (5: 

35 cfs (1.82 ft).

3O p.m.)

ma I.L.O& j. u; .

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of weather records and 

Creek above Robie Creek, near Arrowrock and other nearby streams. 

b Stage-discharge relation affected by ic°

ecords for Moore
150 BOISE RIVER BASIN

Lucky Peak Reservoir near Boise, Idaho

Location. Lat 43°32', long 116°04', in SW^NW-f sec. 12, T. 2 N. , R. 3 E. , at outlet

control tower, at dam on Boise River, 2 miles upstream from diversion dam for Hew York 

Canal, 7 miles downstream from Moore Creek, and 9 miles southeast of Boise.

Drainage are a . - - 2 . 6 8 0 sq mi, approximately. 

Records available. --October 1954 to September 1956.

Gage. Remote registering water-stage recorder. Datum of gage is at mean sea level (level 

by Corps of Engineers). Prior to May 13, 1955, staff gage at same site and datum.

Extremes . --Maximum contents during year, 300,050 acre-ft July 4 (elevation, 3.057 50 ft); 

minimum, 29,250 acre-ft Oct. 15 (elevation, 2,905.69 ft).

1954-56: Maximum contents, 305,130 acre-ft June 25, 1955 (elevation, 3,059.32 ft); 

minimum since near-full capacity was attained on June 25, 1955, that of Oct. 15, 1955.

Remarks . --Reservoir is formed by earth-fill dam. Storage began Oct. 16, 1954. Dam completed in February 1955. Capacity, 307,040 acre-ft between elevations 2,824.0 ft 

(floor of outlet tunnel) and 3,060.0 ft (spillway crest). Minimum proposed operating 

level, 2,905.0 ft (28,770 acre-ft), but all storage can be released. Water is stored 

for flood control and irrigation of lands in Boise Valley.

Cooperation. --Sage-height record and capacity table furnished by Corps of Engineers.

Capacity table (elevation, In feet, and contents. In acre-ft)

2,900.0 

2,920.0 

2,940.0 

2,960.O 

2,980.0

24,910

42,160

64,600

92,370

125,090

162,790

205,580

253,570

307,040

Contents, In acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

(t) 

(*)

oot.

50,840

48,800

46,650

44,400

42,010

39,620

37,260

35,270

33,300

33,070

32,970

31,870

30,910

29,760

29,590

29,790

29,950

30,080

30 , 250

30,400

30,540

30,690

30,840

30,970

31,090

31 , 200

31,340

31,500

31,670

31,830

32,050

2,908.98 

-20,750

Nov.

52.290

32,450

32,610

32,750

32,990

33,110

33 , 300

33 , 440

33,590

33,770

33,980

34,210

34,320

34,480

34,580

34,670

34,810

35,040

35,240

35,630

36,170

36,590

36,890

37,190

37,440

37,730

38,250

38,690

39,060

59,420

2,917.18 

+7,370

Dec.

59,810

40,100

40,330

40,600

40,780

40,960

41,270

41 , 480

41,720

41,960

42,200

42,440

42,730

42,920

43,070

43,340

43,640

43,930

44,330

45,330

46,560

52,010

60,940

67,330

70 , 580

72,810

74,640

76,090

77,240

78,240 

79,260

2,951 .01 

+39,840

Jan.

80,240

81,150

81,920

82,690

83,770

88,620

95,720

102,450

108,990

117,870

128,290

135,820

136,220

136,860

137,880

139,920

144,540

153,130

160,870

169,390

178,4-80

187,610

196,570

205,280

213,640

221,880

250,170

238,120

245,910

253,450 

260,900

3,042.87 

+181,640

Feb.

262,610

261,060

259,640

258,340

257,590

257,980

258,410

256,370

250,540

245,720

257,950

231,620

226,100

223,020

219,790

216,380

212,350

209,520

206,100

202,730

199,460

196,230

193,100

188,370

183,090

177,870

172,630

166,060

158,790

2,998.00 

-102,110

Mar.

151,590

144,600

137,530

130,750

126,300

118,130

110,140

101,800

93,100

84,420

76,200

68, 200

60,200

52,170

44,880

46,970

43,000

39,240

36,670

36,210

35,540

55,160

35,860

58,280

42,050

45,570

48,140

51,130

54,400

57,340 

59,870

2,936.15

-98,920

Apr.

61 , 950

63,400

64,320

64,740

65,280

65,830

66,100

65,970

65,540

65 , 300

65,460

65,790

71,430

72,040

73,170

75,000

76,520

77,810

79,340

81,180

83,310

85,740

88 , 330

90,820

93,070

96,260

98 , 450

99,590

99.04U

97,790

2,963.53 

+37,920

May

96,300

94,470

92,430

90 , 580

88,620

86,530

84,270

82,090

79,790

77,400

75,220

73,220

71,430

69,260

66,900

64,440

62,150

60,080

58,300

57,150

58,650

62,620

66,930

72,150

78,170

84,530

91,930

99,180

108,960

121,640 

137,18i.

2,986.71 

+39,390

June

155,830

174,830

191,680

250,510

215,520

222,190

227,340

231,230

234,530

237,730

240,900

245,060

250 , 890

257,520

264,440

269,970

274,340

278,400

279,810

279,170

278,420

278,850

282,170

285,190

287,840

289,530

291,190

292,970

294,320

296,000

3,056.04 

-158,820

July

297,880

298,990

299,800

299,350

298,080

296,910

295, 640

294,430

293,940

293,880

293,940

294,020

293,960

293,960

293,910

293,800

293,660

293,520

293,630

293,830

293,990

294,100

294,160

294,160

294,130

293,960

293,880

293,830

293,880

293,500 

293,251.

3,055.04 

-2,750

Aug.

293,170

293,410

295,580

293,580

295,360

293,190

293,470

293,410

293,080

292,560

292,120

291,880

291,490

291,270

290,890

290,460

289,830

289,200

288,440

287,600

286,970

286,540

287,330

286,730

284,560

283,600

283, 03C

282,520

282,710

283,140 

282,920

3,051.24 

-10.33C

Sept.

282,140

281,660

278,660

271,170

263,560

255,780

248,330

241,040

233,630

226,390

219,130

212,070

204,970

197,770

190,690

183,690

176,570

177,830

183,130

187,130

189,190

186,980

182,680

177,720

174,270

171,040

166,310

160,350

154, 340

148,290

2,992.62 

-134,630

Calendar year 1955.................... * +69,800

Water year 1955-56.................... * +95,490

t Elevation, In feet, at end of month. 

t Change In contents, In acre-feet.
BOISE RIVER BASIN 151

Boise River near Boise, Idaho

Location. Lat 43°3£", long 116°04', in NE£ sec. 11, T. 2 N. , R. 3 E., at gate-control 

house at outlet works of Lucky Peak Reservoir, 1.8 miles upstream from diversion dam 

for New York Canal, 7^ miles downstream from mouth of Moore Creek, and 9 miles southeast of Boise.

Drainage area.--£ sq mi, approximately.

Records available.--January 1895 to September 1916 (no winter records 1904-5, 1907), 

October 1954 to September 1956. Published as "near Highland" 1905-15 and as "below 

Moore Creek, near Arrowrock" 1916.

Gage.--Remote recorder records of openings of six slide gates, one hollow-Jet valve, and 

elevation of Lucky Peak Reservoir. Prior to Mar. 18, 1905, staff gages at sites 

about 1 mile downstream at different datums. Mar. 18, 1905, to Mar. 20, 1915, staff 

gages, and Mar. 21, 1915, to Sept. 30, 1916, water-stage recorders at sites 

5 to 7 miles upstream at different datums.

Average discharge.--19 years (1895-96, 1897-1903, 1905-6, 1907-16, 1954-56), 3,038 cfs 

(27l99 ,000 acre-ft per year).

Extremes. Maximum discharge during the year, 9,490 cfs June 10; minimum, 1 cfs Oct. 15 

to Jan. 18, when gates were closed.

1895-1916, 1954-56: Maximum discharge observed, 35,500 cfs June 14, 1896; no flow 

Oct. 17, 1954, to Feb. 18, 1955, Feb. 20, 1955, during building of gate structure at 

Lucky Peak Dam.

Remarks.--Records excellent except those below 10 cfs, which are poor. Discharge 

measurements made two to six times per month. Daily discharge computed from gate 

ratings. Flow regulated by Lucky Peak Reservoir (see preceding page), Arrowrock 

Reservoir (see p. 146), and Anderson Ranch Reservoir (see p. 144). Small diversions 

from tributaries upstream for irrigation.

Cooperation. Records of gate operation, stage in Lucky Peak Reservoir, and gate rating 

curves furnished by Corps of Engineers.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

2,860

2,820

2,800

2,850

2,900

2,930

2,890

2,780

2,790

2,880

2,820

2,760

2, 7E

2,69

1,03

40,536

1,308

80 , 400

Nov.

------

30

1.0

60

Dec.

31

1.0

61

Jan.

1

1

1

1

1

1

J.

1

1

1

1

1

1

1

1

1

5

694

,040

,040

,040

,020

,030

996

,050

,060

,070

,080

,080

,090

,100

14,411

465

28,580

Feb.

1,020

968

968

968

718

80

80

1,320

2,680

4,300

3,350

5,720

5,130

5,110

5,090

5,140

5,190

5,170

5,150

5,120

5,100

5,090

4,970

5,770

6,080

6,040

6,090

6,100

6,100

------

112,612

3,883

223,400

Mar.

6,090

6,070

6,060

5,980

4,780

6,570

6,580

6,700

6,980

6,920

6,610

6,510

6,500

6,520

6,230

3,480

6,480

6,470

6,480

6,490

7,020

7,490

7,620

7,680

7,670

7,730

7,770

7,760

7,710

7 , 700

7,750

207,400

6,690

411,400

Apr.

7,750

7,800

7,870

7,980

7,830

7,550

7,540

7,500

7,530

7,510

7,480

7,450

4,800

7,540

7,490

7,500

7,530

7,530

7,510

7,530

7,540

7,550

7,560

7,530

7,550

7,540

8,030

8,620

9,110

9,270

229,520

7,651

455,200

May

9,290

9,300

9,280

9,290

9,300

9,280

9,280

9,310

9,520

9,280

9,280

9,040

8,790

8,790

8,770

8,780

8,750

8,770

8,840

8,800

8 , 200

7,530

7,500

7,510

7,530

7,530

7,540

7,550

7,560

7,620

7,630

265,240

8,556

526,100

June

8,070

8,710

8,690

8,690

9,180

9,470

9,440

9,470

9,460

9,470

9,020

7,850

6,960

6,500

6,510

7,110

7,460

6,350

5,490

5,250

5,020

4,980

4,980

4,990

4,990

4,980

4,970

4,970

5,280

4,980

209,270

6,976

415,100

July

4,980

4,980

5,090

5,080

5,080

5,080

5,010

4,970

4,940

4,930

4,890

4,810

4,880

4,840

4,780

4,750

4,740

4,810

4,830

4,830

4,830

4,810

4,770

4,740

4,710

4,690

4,650

4,550

4,440

4,590

4,630

149,710

4,829

296,900

Aug.

4,600

4,540

4,480

4,460

4,460

4,460

4,460

4,500

4,520

4,530

4,530

4,520

4,530

4,550

4,550

4,550

4,550

4,500

4,500

4,490

4,520

4,500

4,480

4,480

4,460

4,430

4,380

4,290

4,230

4,150

4,110

138,310

4,462

274,300

Sept.

4,040

3,950

3,940

3,930

3,940

3,930

3,930

3,930

3,920

3,900

3,830

3,810

3,800

3,800

3,770

3,730

3,690

3,640

3,580

3,510

3,460

3,440

3,430

3,390

3,320

3,260

3,230

3,250

3,260

5,220

------

109,830

3,661

217,800

Calendar year 1955: Max 5,110 

Water year 1955-56: Max 9,470

Mean 1,924 

Mean 4,035

Ac-ft 1,393,000 

Ac-ft 2,929,000

Note. Discharge Oct. 16 to Jan 

charge measurements.

17, when gate closed, estimated on basis of 4 dis-
152 BOISE RIVER BASIN

Lake Lowell near Caldwell, Idaho

Location. lat 43°35', long 116°45', in SEij- sec. 19, T. 3 N., R. 3 W., on outlet 

structure at lower embankment, 2 miles west and 5 miles south of Caldwell, and 

lat 43°34', long 116-39' , in NVf£ sec. 36, T. 3 N., R. 3 W., on outlet structure at 

upper embankment 1 mile south and 4 miles west of Nampa.

Records available.--October 1917 to September 1956. 

as "Deer Flat Reservoir near Caldwell. "

Prior to October 1945, published

Gage. 

Ts

Gage. Staff gages read once daily. Datum of gages is 2,500.5 ft above mean sea level 

(surveys of Bureau of Reclamation).

, , - . , , , 

1932 (gage height, 30.18 ft); minimum observed, 5,390 acre-ft Oct. 22, 1924.

Remarks . Reservoir is formed by two earth embankments; dams were completed and storage 

Began in 1908. Capacity, 177,150 acre-ft, between gage heights 0.0 ft (sill of outlet gates) and 30.0 ft (maximum operating level). Dead storage, about 13,000 acre-ft. 

Below gage height 12.0 ft, reservoir divides into two pools. In addition to water 

received from local drainage, reservoir receives water from Boise River through New 

York Canal of Boise project. Water is used for irrigation of lower project lands. 

Figures given here represent usable contents.

Cooperation . Gage readings and capacity table furnished by Board of Control for Boise 

project.

Capacity table, water year 1955-56 (gage height, In feet, 

and contents. In aore-feet)

12.0

14.0

16.0

18.0

20.0

43,080

54,060

66,110

79,110

93,040

22.0

24.0

26.0

28.0

30.0

107,900

123,700

140,500

153,200

177,200

Contents, In acre-feet, watery year October 1955 to September 1956

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

HI

Oct.

48.650 

50,320 

51,780 

53,260 

54,470

56,100 

57,690 

59,600 

61,480 

63,500

65,610 

66,420 

68,950 

71,200 

73,340

75,770 

76,230 

76,430 

76,230 

76,700

76,830 

76,960 

77,160 

77,160 

77,300

77,430 

77,430 

77,560 

77,700 

77,760 

77,900

17.82 

+31,100

Calendar year 

Water year IS

Nov.

78,050 

78^170 

78,170 

78,440 

78,500

78,640 

78,700 

78,700 

78,770 

78,900

78,970 

78,970 

79,040 

79,110 

79,170

79,310 

79,380 

79,510 

79,850 

80,190

80,460 

80,590 

80,660 

80,800 

80,930

81,070 

81,200 

81,340 

81,480 

81.750

18.39 

+3,850

Dec.

81,950 

82,360 

82,500 

82,640 

82,780

82,980 

83,120 

83,190 

83,320 

83,530

83,670 

83,740 

83,740 

83,810 

83,880

84,010 

84,150 

84,220 

84, 430 

84,570

84,700 

84,840 

85,190 

85,400 

85,610

85,820 

85,880 

85,880 

86,020 

86,090 

86.160

19.03 

+4 , 410

Jan.

86.160 

86,230 

86,300 

86 , 440 

86,650

86,650 

86,790 

86,860 

86,930 

87,000

87,070 

87,140 

87,210 

87,420 

87,910

87,980 

88,050 

88,190 

88,260 

88,340

88,410 

88,900 

89,110 

89,180 

89,250

89,250 

89,250 

89,520 

89 ,320 

89,520 

89,520

19.48 

+5,160

Feb.

89,750

89,750 

89,820 

89,890 

90,030

90,050 

90,170 

90,170 

90,520 

90,460

90,600 

90,600 

90,600 

91,050 

92,600

95,760 

95,060 

96,220 

97,030 

97,980

99,510 

100,700 

102,500 

104,400 

106,500

108,500 

110,500 

112,500 

114,500

22.82 

+24,980

55-56 .................... * +27

Mar.

116.100

118,OOO 

119,900 

121,700 

125,600

125,500 

127,200 

129,100 

131,100 

132,900

154, 600 

154, 800 

134,700 

154,400 

154,200

154,000 

155,800 

155,800 

155,700 

133,700

133,400 

153,200 

134,900 

157,000 

159 , 100

141,500 

142,700 

144,800 

146,800 

149,000 

151,300

27.25 

+57,000

340 

460

Apr.

153.200

154,900 

156,600 

158,000 

159,600

160,900 

162,100 

163,300 

164,500 

165,400

165,600 

166,100 

166,500 

166,600

166,400

166,200 

165,600 

165,200 

164,600 

165,700

162,600 

161,100 

159,900 

158,500 

156,900

155,100 

154,000 

155,400 

155,400 

155,700

i7.50 

+2,400

May

154,000 

154,600 

154,900 

155,500 

155,800

156,200 

156,800 

158,100 

159,500 

160,900

162,000 

163,400 

164,200 

165,600 

166,800

168,000 

168.500

167,800 

166,500 

164,700

162,400 

160,200 

157,700 

155,200 

i53,100

151,400 

150,100 

149.800

150, OOO 

150,600 

151,600

27.27 

-2,100

June

152,400 

153,000 

155,500 

155,700 

154,000

154,200 

154,600 

154,900 

155,100

155,100

155,000 

154,600 

153,500 

152,500 

151,100

149,800 

148,500 

147,500 

146,600 

145,400

144,000 

143,000 

141,800 

140,400 

159,500

158,100 

156,500 

154,200 

132,200 

130,100

24.77 

-21,500

July

127,800

125, 8OO 

123,600 

121,800 

120,200

118,400 

116,800 

115,100 

113,300 

111,300

109,200 

106,800 

104, 800 

102,700 

100,700

98,870 

96,880 

95,060 

93,320 

91,960

90,460 

89,040 

87,420 

86,230 

84, 840

83,530 

82,160 

81,070 

80,520 

79,440 

79^042

17.99 

-51,060

Aug.

78.300 

77.5OO 

76,650 

75,770 

74,580

73,730 

72,820 

71,520 

69,780 

68,570

67,050 

65,860 

64,610 

65,070 

61,780

60,260 

58,640 

57,270 

56,040 

54,760

53, 430 

52,120 

50, 820 

48,980 

47 , 610

46,550 

45,610 

45.030 

45,036 

45,19C 

45,450

12 . 45 

-33,590

Sept.

45.830 

46,370 

46 , 850 

47,400 

47,720

48,160 

48,490 

48,820 

49,430 

50,040

50,480 

50,990 

51,550 

52,400 

53,550

54,760 

56,100 

57,630 

59,180 

60,320

61,660 

63,000 

64,360 

65,860 

67,120

68,320 

69,720 

70,940 

72,490 

74.260

17.27 

+28,810

t : ELevatlon, in feet, at end of month, 

t Change In contents, in acre-feet.
BOISE RIVER BASIN 153

Diversions from Boise River between near Boise and at Boise gaging stations, Idaho

Between near Boise and at Boise gaging stations (prior to 1955 water year, published as 

between Dowling Ranch and Boise gaging stations}, six principal canals and several small 

farm laterals divert water from Boise River for irrigation.

Records of total diversion during period April to September for each canal for years 

1919-46, combined daily diversion covering period April to September for years 1947-56, 

and daily flow of New York Canal February 1939 to October 1948 in reports of Geological 

Survey. Records of daily diversion for each canal from 1916 to 1956 on file in office of 

Idaho State Reclamation Engineer. No record of October and March diversion except for 

New York Canal. Diversion through New York Canal for period October to March as reported 

by Boise Project, Board of Control were: October, 65,380 acre-ft; February, 

27,810 acre-ft; March, 45,770 acre-ft.

Records show summation of discharge for these diversions. Staff gages on canals read 

daily or several times weekly and discharge measurements made frequently. Field data 

obtained and records summarized under direction of E. B. Karn, watermaster for Boise 

River.

Discharge, In cubic feet per second, April to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IS

19

2O

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct. Nov. Dec. Jan. Feb. Mar. Apr.

1.360 

1,366

1,420

1,500

1,640

1,630

1,670

1,360

1,800

2,O50

2,350

2,540

2,480

2,960

3,060

3,140

3,280

3,340

3,320

3,440

3,430

3,460

3,470

3,490

5.510

3,480

3,430

3,440

3,440

3,440

80,290

2,676

159,300

May

3,420 

3,420

3,420

3,220

3,320

3,320

3,280

3,260

3,270

3,260

3,130

2,820

2.760

2,850

2,990

3,240

3,360

3,420

3,430

3,420

3,440

3,450

5.460

5, 460

5,450

5,450

3,300

3,300

3,500

3,310

3,260

101,790

3,284

201,900

June

5.340 

3,360

3,350

3,350

3,350

3,350

3,460

3,360

3,360

3,360

3,370

3,420

3,420

3,410

3,430

3,410

3,380

3,380

3,410

3,410

3,420

3,440

3,440

3,450

3,450

3,450

3,480

3,510

5,540

3,540

102,400

3,410

203,100

July

3.550 

37555"

3,53O

3,520

3,520

3,550

3,510

3,520

3,510

3,510

3,500

3.52O

3,530

3,520

3,520

3,530

3,520

3,520

3,520

3,520

3,520

3,520

3,530

3,520

3,510

3,510

3,50O

3,500

3,500

3.490

3,500

109,000

3,516

216,200

Aug.

5.500 

3,490

3,480

3,480

3,480

3,500

3,480

3,470

3,480

3,480

3,490

3,490

3,490

3,490

3,490

3,490

3,490

3,490

3,480

3,480

3,480

3,48O

3,490

3,480

3,480

3,480

3,460

3,430

3,420

3,410

3.590

107,720

3,475

213,700

Sept.

3,400 

3, 240

3,240

3,250

3,240

3,24O

5,240

5,240

3,240

5,220

5,210

5,200

5,210

5,210

5,200

5,180

5,180

5,120

5,070

5,010

2,920

2,910

2,870

2,860

2.760

2,780

2,790

2,780

2,780

2,76O

92,530

5,078

185,100

Calendar year : Max Mln Mean Ac -ft

Water year : Max Mln Mean Ac-ft

467239 O-58 11
154 BOISE RIVER BASIN

Boise River at Boise , Idaho

Location. La t 43°37' , long 116°13' , in SWj- sec. 10, T. 3 N. , R. 2 E., on right bank 

at Capital Boulevard Bridge at Boise.

Drainage area.--2.760 sq mi, approximately.

Records available.--March 1938 to September 1939 (gage heights only), February 1940 to 

September 1956.

Gage. Water-stage recorder. Datum of gage is 2,675.46 ft above mean sea level (datum 

of Corps of Engineers, Boise River Surveys). Prior to Apr. 30, 1943, at site 1 mile 

upstream at datum 13.69 ft higher. Apr. 30 to July 10, 1943, at site 400 ft downstream at present datum.

Extremes. Maximum discharge during year, 7,010 cfs Mar. 10 (gage height, 7.15 ft); minimum, 8.6 cfs Dec. 16 (gage height, 2.38 ft); minimum daily, 10 cfs Dec. 18, 

Jan. 12, 13.

1940-56; Maximum discharge, 21,000 cfs Apr. 20, 1943 (gage height, 10.00 ft, site 

and datum then in use); minimum, 1.3 cfs Feb. 3, 1955 (gage height, 2.21 ft); minimum daily, 6.8 cfs Feb. 3, 1955.

Remarks.--Records excellent except those for periods of ice effect or no gage-height 

record, which are good, and those below about 100 cfs, which are fair. Flow regulated by Arrowrock Reservoir (see p. 146), Anderson Ranch Reservoir (see p. 144), and 

Lucky Peak Reservoir (see p. 150). New York, Ridenbaugh, and four smaller canals 

(see p. 153) divert between station near Boise and this station.

Rating table,

height,

water year 1955-56, except

in

2

2

2

2

3

3

feet,

.4

.5

.6

.8

.O

.3

and discharge,

8.0

14

23

52

98

210

in

3.6

4.0

4.5

5.0

6.0

7.2

period of ice effect (gage

cubic

1

2

4

7

feet per

381

730

,470

,340

,320

,060

second)

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

355

330

306

277

300

294

300

288

245

388

423

335

266

260

215

132

104

*44

32

28

26

24

24

23

22

22

19

19

18

18

IB

5,150

166

10,200

Nov.

17

*16

14

15

13

13

14

14

13

13

13

14

15

14

13

13

15

18

14

18

15

13

13

12

13

12

13

12

13

13

41b

13.9

829

Dec.

15

14

13

12

13

17

16

13

*15

14

13

13

12

12

11

11

11

10

11

12

13

15

39

42

31

27

22

19

17

16

17

516

16.6

1,020

Jan.

17

16

13

13

13

13

12

11

11

12

11

10

To

12

27

33

30

262

958

1,000

1,020

1,020

*1,020

1,020

1,030

1,040

1,060

1,060

al,060

al,070

bl,080

13,964

450

27,700

Feb.

bl,060

bl,030

b990

b970

930

228

TOO" 116

2,430

4,050

3,800

3,090

*4,520

4,110

3,900

4,130

4,780

4,740

4,690

4,470

4,110

3,920

3,820

4,580

5,110

5,070

5,090

5,070

5,070 ~ - - - - -

96,574

3,330

191,600

Mar.

5,050

5,050

5,000

4,910

3,720

5,570

5,520

*5,660

6,000

6,300

6,840

6,770

6,750

6,720

6,700

2,550

6,630

6,600

6,750

6,750

6,700

6,600

6,700

6,700

6,750

6,770

6,750

6,700

6,630

6,600

6,530

189,050

6,098

375,000

Apr.

6,560

6,580

6.600

6,530

6,400

6,000

5,870

5,800

5,610

5,320

5,020

4,760

2.080

4,340

4,240

*4,150

4,130

4,170

4,130

4,090

4,090

4,090

4,090

4,070

4,050

4,190

4,670

5,220

5,780

5,980

148,610

4,954

294,800

May

6,000

6,000

6,000

6,140

6,120

6,100

6,140

6,170

6,120

6,210

6,400

6,4OO

6,070

6,000

5,820

5,540

5,430

*5,410

5,480

5,450

4,940

3,900

3,920

3,960

3,980

4,030

4,190

4,220

4,240

4,280

4,320

164,980

5,322

327,200

June

4,650

5,430

5,430

5,410

5,820

6,210

*6,210

6,210

6,190

6.240

5,750

4,470

3,610

3,130

3,210

3,690

4,150

3,180

2,230

1,980

1,690

1,570

1,570

1,590

1,560

1,540

1,520

1,470

1,670

1,500

108, 880

3,629

216,000

July

1,500

1,520

1,520

1,520

1,520

*1,490

1,520

1,490

1,470

1,420

1,390

1,340

1,390

1,360

1,340

1,310

1,260

1,280

1,310

*1,280

1,290

1,290

1,260

1,230

1,200

1,170

1,150

1,100

972

1,080"

1,140

41,112

1,32E

81,540

Aug.

1,120

1,060

1,000

972

972

972

944

972

1,020

1,030

,030

,040

,030

,040

,030

,030

,040

,020

,020

,020

1,020

1,000

972

972

972

972

944

*90E

860

821

756

30,553

986

60,6OO

Sept.

730

719

719

719

719

708

697

697

697

686

642

611

602

611

611

593

584

575

575

557

557

548

548

548

*506

467

430

409

451

459

17,975

599

35,650

Calendar year 1955 : Max 1,740 Min 6.8 Mean 435 Ac-ft 315,200

Water year 1955-56 : Max 6,840 Min 10 Mean 2,234 Ac-ft 1,622,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for stations 

near Boise and at Notus.

b Stage-discharge relation affected by ice.
BOISE RIVER BASIN 155

Spring Valley Creek near Eagle, Idaho

Location. Lat 43°44'20" ) long 116°18'00" on right bank in SE£ sec. 26, T. 5 N., R. IE., 

half a mile upstream from mouth and 4 miles northeast of Eagle.

Drainage area. 20.9 sq mi.

Records available . June 1954 to September 1956.

Gage. Water-stage recorder and concrete control. Datum of gage is 2,721.70 ft above 

mean sea level, unadjusted.

Extremes. Maximum discharge during year, 54 cfs Dec. 23 (gage height. 2.18 ft); maximum gage height, 2.24 ft Dec. 23 (backwater from debris on control); no flow for 

long periods.

1954-56: Maximum discharge, 60 cfs Apr. 22, 1955 (gage height, 2.19 ft); maximum gage height, that of Dec. 23, 1955; no flow for long periods.

Remarks. Records good except those below 1.0 cfs, which are poor. Diversions above 

station for irrigation.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.0

1.1

1.2

1.3

1.4

1.3 

2.9

1.5

1.6

1.7

1.8 

2.0

13.5

20

38

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

(»)

(*)

0

0

0

Dec.

0.1

.1

.1

.1

b.l

*.l

.1

.1

.3

.4

.4

.6

.7

b.5

b.5

.6

.6

.6

.8

2.1

*2.2

6.2

*28

*Ta

9.3

6.4

5.3

*4.1

2.6

b2,4

b2.9

96.3

3.11

191

Jan.

2.6

2.4

2.3

2.3

2.3

2.1

1.9

1.8

1.6

1.5

1.3

T7S

1.9

1.9

16.5

14.5

9.8

8.8

8.4

7.4

7.0

11

*22

T4

12.5

12.5

12

*b7.0

b9.0

b9.0

b4.0

212.6

6.86

422

Feb.

b4.5

b4.5

b5.0

b6.0

b6.5

b7.0

b6.5

b5.5

5.1

4.8

4.8

11

^.1

6.0

b5.0

b2.0

b4.5

b5.5

b5.0

5.6

9.2

9.8

10

7.8

8.1

8.1

7.8

7.8

8.4

189.9

6.55

377

Mar.

8.4

10.5

13.5

14

12

11

10.5

*10.5

11

10

ba.o

b8.0

9.8

7.8

7.8

7.0

7.4

9.3

10

*12

15

16

17.5 TTTS

17.5

15.5

13

10

9.3

8.4

8 . 1

346.3

11.2

687

Apr.

7.4

677

6.0

6.4

6.0

5.1

5.1

4.8

4.3

4.1

3.4

.7

.8

1.3

.6

*1.5

1.3

1.8

.8

.9

.8

.8

.6

.2

_.!

.6

2.4

2.4

2.4

2.1

81.4

2.71

161

May

2.1

*1.9

1.8

2.3

1.4

.7

.7

.7

.6

.7

2.8

3.4

374

3.1

2.6

1.9

1.9

1.5

1.5

1.5

1.1

.4

.4

1.0

.8

.7

1.2

1.2

.9

.8

. 8

45.8

1.48

91

June

~7B 0.9

.8

.9

.9

.8

*.8

.7

.6

.5

.4

.4

.4

.4

.4

.6

.4

.4

.3

_a

.1.1.1.1.1

.1.1.1.1.1

12.5

0.42

25

July

*o 0.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0:1

0.003

0.2

Aug.

(*)

(*)

0

0

0

Sept.

(*)

0

0

0

Calendar year 1955: Max 37 Mln 0 Mean 1.82 Ac-ft 1,320

Water year 1955-56 : Max 28 Mln 0 Mean 2.69 Ac-ft 1,950

* Discharge measurement or observation of no flow made on this day. 

b Stage-discharge relation affected by Ice.
156 BOISE RIVER BASIN

Dry Creek near Eagle, Idaho

Location. Lat 43°43'55", long 116°18'15", in NW£ sec. 35, T. 5 N. , R. IE., on left bank

 80 ft downstream from State Highway 15, 500 ft downstream from Spring Valley Creek, 

and 3.6 miles northeast of Eagle.

Drainage area. 59.4 sq mi.

Records available. June 1954 to September 1956.

Page.--Water-stage recorder and concrete control. Datum of gage is 2,692.80 ft above 

mean sea level, unadjusted.

Extremes.--Maximum discharge during year, 156 cfs Dec. 23 (gage height, 3.73 ft); mini-

 mum, 0.1 cfs Sept. 4,5; minimum gage height, 1.08 ft Sept. 27.

1954-56: Maximum discharge, that of Dec. 23, 1955; minimum, 0.1 cfs Oct. 21-29, 

1954, Sept. 4, 5, 1956; minimum gage height, 1.08 ft Sept. 27, 1956.

Remarks. Records good except those for periods of no gage-height record and those below 

1.0 cfs, which are fair. Diversions upstream for irrigation.

Rating table, water year 1955--56 (gage height, in feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Dec. 23, 24)

1.0

1.1

1.2

1.3

1.4

1.5

1.8 

4.1 

7.4

2.0 

2.3 

2.6

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.4

.4

3

.2

.2

.2

.2

*.8

1.4

1.4

1.4

1.5

1.5

1.5

1.5

1.6

T76

1.6

1.5 

1.4

1.4

24.1

0.78

48

Nov.

1.4

TTs

1.5

1.4

1.4

1.4

1.5

1.5

1.4

1.4

1.4

1.4

1.5

1.6

TT6

1.6

1.6

1.6

1.6

1.6

 1.5

1.5

1.5

1.5

1.5

1.4

1.5

1.4

1.4 

1.4

44.5

1.48

88

Dec.

1.5

1.4

1 4

1.4

1.4

1.5

1.6

1.6

1.8

1.6

1.6

1.6

2.4

1.4

1.5

\.e z'.t

2.4

3.1

6.7

 9.1

30

*96

*78

40

29

25

*20

13

12

16

408.0

13.2

809

Jan.

15

12

10

9.9

10

9.1

8.2

7.4

7.1

7.1

6.7

67T

7.8

7.8

52

56

44

36

32

30

29

36

*66

43

32

30

28

17

22

22

9.5

709.3

22.9

1,410

Feb.

all

all

a!3

a!6

a!7

18

17

16

15

14.5

14

30

*28

22

16.5

17.5

16.5

18.5

25

26

26

20

20

20

21

21

22

532.9

18.4

1,060

Mar.

23

28

32

32

30

26

24

*27

26

24

19.5

21

24

21

20

22

24

29

38

*43

45

50

57

66

j>9

66

56

48

43

41

1,112.5

35.9

2,210

Apr.

36

33

31

30

29

28

26

22

20

16.5

9.3

a3.5

aS.O

a4.5

aS.O

*14

11.5

3.1

4.2

4.3

3.8

3.2

2.6

1.6

1.9

18

27

25

22

21

465.0

15.5

922

May

17

*9.5

7.4

11

11

9.5

14 

14.5

13

12.5

14

16

ittf

9.1

5.2

3.6

2.6

1.5

.7

.7

f Q ~^J

1.4

2.7

1.1

8.0

11.5

10.5

5.'4

258.1

8.33

512

June

4.1

2.2

al.5

al.8

al.8

a2.0

 1.8

2.4

3.1

2.8

2.4

2.2

1.5

.5

1.3

4.7

3.3

.8

1.1

1.8

1.6

.7

.7

7

.8

.5

.3

73

.3

.4

49.4

1.65

98

July

0.4

*.4

.4

.3

.3

.4

.7

.8

75

.4

.4

.4

.3

.3

.3

.3

.3

.5

.4

.3

.3

.2

73

.3

.3

.3

.3

.3

.4

.4

.4

11.6

0.37

23

Aug.

*0.4

.4

.4

.3

.3

.3

.3

.3

.2

.4

.6

.4

.3

.3

*.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

9.0

0.29

18

Sept.

0.2

'.Z

.2

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.2

.4

7T

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.4

0.21

13

Calendar year 1955: Max 1O1 Min 0.2 Mean 6.20 Ac -ft 4,480

Water year 1955-56: Max 96 Mln 0.2 Mean 9.92 Ac-ft 7,210

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for station 

at Eagle and nearby streams.
BOISE RIVER BASIN 157

Dry Creek at Eagle, Idaho

Location. Lat 43°41'45", long 116°22'05", in SV£ aec. 8, T. 4 N., R. IE., 40 ft downstream from State Highway 44, 0.4 mile upstream from mouth, and 0.7 mile west of 

Eagle.

Drainage area. 66.4 sq mi.

Records available. June 1954 to September 1956.

Gage. Water-stage recorder and concrete control. Datum of gage is 2,545.82 ft,unadjusted.

Extremes. Maximum discharge during year, 149 ofs Dec. 23; maximum gage height, 4.86 ft 

May 14; no flow Nov. 11 to Dec. 20, Apr. 15.

1954-56: Maximum discharge, that of Dec. 23, 1955; maximum gage height, that of 

May 14, 1956, no flow for long periods.

Remarks. Records fair. Diversions upstream for irrigation. Canals waste water into 

creek above station.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

3.4 

3.7

H3.7

3.9

3.4

3.4

3.7

3.9

3.2

3.4

1.6

.9

.7

.7

.6

*.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.3

73

.3 

.3

53.2

1.72

106

Nov.

*t

.3 

.3

.3

.2

.2

.2

.2

.1

0 

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

2.3

0.08

4.6

Dec.

0 

0

0 

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0

*0

1.8

17

*77

76

35

24

19

*15

9.7

7.9

10

292.4

9.43

580

Jan.

9.0 

7.9

7.3

7.3

7.3

6.6

5.3

4.2

3.7

3.7

3^4 

3.4

4.7

5.6

47

56

37

30

27

24

23

28

*62

34

24

23

23

13

16

16 

7.8

570.2

18.4

1,130

Feb.

a9.o 

a9.o

all 

a!3

a 14

a!5

al4

al3

al2

all

all 

26

*§4

17

12

3*1

10

12

11

13

17.5

18

18

13

13

13.5

14

14

15.5

396.9

13.7

787

Mar.

18 

?5

30 

30

28

24

23

*23

24

21

21 

24

26

21

19.5

19.5

21

25

32

*36

37

*45

56

69

81

80

67

53

45

42 

38

1,102.0

35.5

2,190

Apr.

33 

29

27 

29

51

69

54

43

30

19.5

17.5 

9.3

3.2

.6

0

*2.0

20

29

*27

24

19.5

9.7

6.9

4.7

8.8

23 -

35

42

48

51

765.7

25.5

1,520

May

48 

*34

29 

33

35

30

40

44

44

51

57 

59

64

6S

40

30

23

19

24

26

21

18.5

21

29

32

36

46

51

45

36 

29

1,157.5

37.3

2,300

June

25 

30

32 

32

33

28

*E6

29

29

30

29 

32

36

39

48

56

62

64

12

62

59

51

30

20

23

24

26

26

22

8.6

1,073.6

35.8

2,130

July

9.7 

*8.6

11.5 

13.5

11.5

11.5

10.5

12.5

*15.5

111

9.3

10

14

17

16

15.5

14

15.5

15.5

18

18

19.5

18.5

20

18

16

15

9.0

10.5

16.5 

18 5

436.7

14.1

866

Aug.

*20 

13.5

13.5 

12.5

11

11.5

18.5

7.3

7.3

6.9

6.6

14377

4.2

»5.6

10.5

9.3

6.9

9.7

12.5

8.6

11.5

11

10

9.3

9.0

14

18

18

19.5 

24

347.3

11.2

689

Sept.

ft

25 

20

23

26

19.5

23

23

15

 10.5 

13.0

14.5

15.5

11.5

10.5

11.5

20

21

13.5

13

18.5

19.5

16.5

13.5

14

14.5

14

13.5

13

517.0

17.2

1,030

Calendar year 1955: Max 91 Mln 0 Mean 6.74 Ac-ft 4,880

Water year 1955-56: Max 81 Mln o Mean 18.3 Ac-ft 13,330

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for station 

near Eagle and nearby streams.
158 BOISE RIVER,BASIN

Diversions from Boise River between Boise and Notus gaging stations, Idaho

Between Boise and Notus gaging stations, 21 principal canals and several small farm 

laterals divert water from Boise River fop irrigation.

Records of total diversions during period April to September for each canal for years 

1919-46 and combined daily diversion covering period April to September for years 1947-56 

in reports of Geological Survey. Records of daily diversion for each canal from 1916 to 

1956 on file in office of Idaho State Reclamation Engineer. Diversions usually made also 

during October and March: no record available.

Records show summation of discharge fop these diversions. Staff gages on diversions 

read daily or several times weekly, and discharge measurements made frequently. Field 

data obtained and records summarized under direction of E. B. Karn, watermaster for Boise 

River. Records fair.

Discnarge, in cubic feet per second, April to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ao-ft

Oct. Nov. Dec. Jan. Feb. Mar. Apr.

20 

20

131 

199

289

296

322

335

434

736

950

1,100

912 

1,310

1,430

1,600

1,750

1,900

1,980 

2,090

2,150

2,160

2,220

2,260

2,280

2,260

2,210 

2,200

2,190

2,180

39,914

1,330

79,170

May

2,170 

2,160

2,180 

2,180

2,110

2,100

2,000

1,920

1,900

1,880

1,840

1,810

1,770 

1,780

1,840

1,990

2,070

2,150

2,230 

2,230

2,260

2,260

2,280

2,260

2,220

2,200

2,100 

1,780

1,920

1,870

1,910

63,370

2,044

125,700

June

2,040 

2,060

2,060 

2,060

2,060

2,020

2,030

2,040

2,080

2,120

2,140

2,170

2,200 

2,210

2,210

2,160

2,120

2,130

2,010 

2,070

2,050

2,090

2,120

2,150

2,170

2,180

2,200 

2,220

2,280

2,500

63,750

2,125

126,400

July

2,350 

2,380

2,410

2,4oo

2,320

2,350

2,360

2,310

2,300

2,270

2,270

2,280

2,280 

2,290

2,300

2,300

2,270

2,260

2,240 

2,280

2,290

2,280

2,270

2,240

2,230

2,220

2,020 

2,180

2,160

2,130

2,140

70,380

2,270

139,600

Aug.

2,070 

2,060

2,000 

1,990

2,000

1,930

1,980

1,920

1,960

1,960

2/020

2,020

2,030 

1,950

1,980

2,040

2,060

2,060

2,070 

2,080

2,070

2,060

2,040

2,030

2,020

2,010

2,010 

1,900

1,860

1,820

1,800

61,800

1,994

122,600

Sept.

1,770 

1,760

1,740 

1,740

1,740

1,680

1,650

1,640

1,630

1,630

1,580

1,550

1,520

1,500

1,500

1,490

1,510

1,500

1,500 

1,470

1,390

1,380

1,370

1,330

1,350

1,300

1,290 

1,260

1,220

1,200

45,190

1,506

89,630

Calendar year : Max Min Mean Ao-ft

Water year : Max Min Mean Ao-ft
BOISE RIVER BASIN 159

Boise River at Notus, Idaho

Location. Lat 43°43', long 116°48' , in SE£ see. 34, T. 5 N., R. 4 W., on right bank

1,100 ft upstream from county road bridge, a quarter of a mile southeast of Notus, and 

7 miles northwest of Caldwell.

Drainage area. 3,820 sq nil, approximately.

Records available.--April 1920 to September 1956 (irrigation season only 1923-24).

Gage. Water-stage recorder. Datum of gage is 2,288.55 ft above mean sea level (datum 

of Corps of Engineers, Boise River Surveys). Prior to Aug. 26, 1936, staff gage at 

site 1,100 ft downstream at same datum.

Extremes. Maximum discharge during year, 6,960 cfs Mar. 11 (gage height, 7.44 ft); minimum, 232 cfs July 12 (gage height, 1.81 ft); minimum daily, 239 cfs July 12.

1920-56: Maximum discharge, 20,500 cfs Apr. 20, 1943 (gage height, 10.43 ft); minimum observed, 10 cfs Aug. 18, 21, 1920.

Remarks. Records excellent except those for period Oct. 1 to Feb. 19, which are good. 

Diversions above station for irrigation of about 309,300 acres. Diversions between 

station and mouth for irrigation of about 5,300 acres. Plow regulated by Arrowrock 

Reservoir (see p. 146), Anderson Ranch Reservoir (see p. 144), and Lucky Peak Reservoir (see p. 150). Records of chemical analyses and water temperatures for the water 

year 1956, are given in WSP 1453.

Revisions (water years) , WSP 1347: 1930.

Rating table, water year 1955-56 (gage height, in feet,

and discharge, in cubic feet per second)

(Shifting-control method used Oct. 12-31, Dec. 23-25,

Jan. 19 to Feb. 21)

l.E 228

306

580

960

4.0 

5.0 

6.0 

7.5

1,910

3,110

4,560

7,060

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

0

1

2

3

'4

5

6

7

8

29

30

31

Total

Mean

Ac- ft

Oct.

278

310

315

306

315

360

385

444

491

450

678

776

768

800

960

1,080

952

912

864

856

848

856

824

*808

800

808

784

776

760

768

21,084

680

41,820

Nov.

752

736

720

728

720

706

699

692

69E

706

699

692

678

685

657

643

S71

678

692

760

744

699

678

671

657

657

657

650

650

650

20,719

691

41,100

Dec.

*692

678

657

636

629

650

650

622

636

622

615

615

601

587

574

587

587

580

574

560

554

574

776

962

796

728

706

678

643

622 

6 15

20,006

645

39,680

Jan.

615

601

580

580

580

567

560

548

534

534

*534

534

534

548

685

888

760

699

990

1,550

1,600

1,630

,940

+ ,740

,690

,680

,720

,660

,670

1,690

1,620

32,061

1,034

63,590

Feb.

1,640

1,600

1,550

1,540

1,560

1,330

B48

768

1,890

3,440

*4,930

3,020

4,770

4,750

4,480

4,460

4,990

5,260

5,200

5,200

4,910

*4,660

4,540

4,510

5,460

5,500

5,460

5,550

5,500

------

109,296

3,769

216,800

Mar.

5,500

5,510

5,530

5,530

5,230

4,700

5,960

5,970

*6,190

6,400

6,720

6,910

6,860

6,870

6,820

4,860

4,800

6,690

6,800

6,860

6,920

6,770

6,770

6,800

6,840

6,840

6,840

6,800

6,750

6,720 

6,690

195,450

6,305

387,700

Apr.

6,670

6,580

6,550

6,500

6, £30

5,990

5,780

5,620

5,440

4,960

4,620

4,300

2,670

2,910

3,270

3,230

*3,140

3,100

3,040

2,780

2,710

2,700

2,720

2,720

2,720

3,010

3,530

3,960

4,400

4,900

126,750

4,225

251,400

May

4,880

4,830

4,820

4,960

5,250

5,250

5,580

5,800

5,770

5,680

6,020

6,260

(6,020

5,820

5,550

4,860

4,430

4,200

4,100

4,180

4,130

3,100

2,820

3,140

3,320

3,390

4,010

4,300

*4,130

4,120

4,040

144,760

4,670

287,100

June

3,770

4,340

4,670

4,700

4,930

5,450

5,390

*5,300

5,140

5,100

5,100

4,250

3,310

2,670

2,750

3,030

3,740

3,660

2,060

1,830

1,470

1,140

936

936

888

692

554

438

337

473

89,090

2,970

176,700

July

350

422

428

444

505

*467

444

433

428

332

274

239

247

266

298

328

298

266

278

266

298

346

380

370

360

380

428

433

461

450 

400

11,317

365

22,450

Aug.

380

375

411

406

380

370

332

310

274

258

290

282

286

302

*341

324

286

282

274

294

286

278

274

266

270

294

422

594

608

567 

522

10,838

350

21,500

Sept.

467

411

395

365

555

385

428

438

455

455

450

455

467

491

491

491

473

438

455

450

438

467

515

541

*528

509

485

467

509

528

13,802

460

27,380

Calendar year 1955: Max 1,080 Mln 15 Mean 391 Ac-ft 283,300

Water year 1955-56: Max 6,920 Mln 239 Mean 2,173 Ac-ft 1,577,000

Discharge measurement made on this day.
160 MALHEUR RIVER BASIN

Malheur River near Drewsey, Oreg.

Location. Lat 43°47', long 118°20> , in SE£ sec. 31, T. 20 S., R. 36 E., on left bank 

300 ft downstream from crossing of Burns-Ontario highway, half a mile downstream from 

Cottonwood Creek, and 3 miles southeast of Drewsey.

Drainage area. 910 sq mi, approximately.

Records available. June 1920 to September 1921, November, December 1921, March, April

1922. April to September 1923, June 1926 to September 1956. Monthly discharge only 

for some periods, published in WSP 1317. March to September 1914 at site 13 miles upstream; records not equivalent owing to inflow from several creeks.

Sage. Water-stage recorder. Datum of gage is 3,479.13 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Apr." 27, 1923, water-stage recorder or staff gage at site half a mile downstream at different daturas. Apr. 27,

1923. to June 6, 1939, water-stage recorder at site 7 miles downstream at different 

datum.

Average discharge. 30 years (1926-56), 168 cfs (121,600 acre-ft per year).

Extremes. Maximum discharge during year, 2,440 cfs Mar. 26 (gage height, 9.49 ft); minimum, 6.1 cfs Sept. 28 (gage height, 2.56 ft).

1920-21, 1923, 1926-56: Maximum discharge, 5,600 cfs Mar. 25, 1952 (gage height, 

12.90 ft); no flow at times.

Remarks. Records good except those for periods of ice effect, which are poor, 

sions for irrigation of about 13,000 acres above station.

DiverRevisions (water years).--WSP 1093: 1927. WSP 1287: 

1927-31, 1937; drainage area (former site).

Drainage area. WSP 1397: 1921,

Rating tables, water year 1955-56, except periods of ice effect 

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

Oct. 1 to Mar. 26 Mar. 27 to Sept. 30

2.7

2.8 

3.0 

3.2 

3.5

6.6

12

118

4.0 227

5.0 515

7.0 1,250

9.0 2,200

2.8 

3.0 

3.2

4.0 5.5 

4.0

5.0 

6.0 

8.0

100

195

450

800

1,650

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

S

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

10~~ 9.4

11

11

*12

14

13

11

12

16

20

49

48

45

46

45

43

42

45

48

48

48

46

45

*45

45

45

31

28

35 

35

1,001.4

32.3

1,990

NOV. ,

38

36

30

31

40

45

42

43

42

36

40

39

33

b30

b25

28

38 

45

60

95

*112

107

91

78

80

86

97

132

US

103

1,820

60.7

3,610

Dec.

97

91

78

75

t>55

bSO b5"5~

b65

b70

b75

78

90

b85

b80

b80

b82

b86 

95

103

584

890

1.180

1,160

599

404

327

b360

b230

b!40

b!40 

b!60

7,664

247

15,200

Jan.

b!80

b!70

b!60

159

*161

151

144

b!40

b!30

120

138

138

136

132

582

1,290

590 

446

350

321

307

321

954

440

256

205

b!60

130

110

b!05 

blOO

8,726

281

17,310

Feb.

blOO

bTIo

b!20

b!30

bI40

b!35

b!30

b!30

b!30

b!40

180

210

b200

b!80

*b!70

blOO

b!05 

b!20

b!30

153

250

926

814

416

291

258

222

220

245

6,455

223

12,800

Mar.

392

479

563

458

302

240

208

367

560

383

258

215

248

329

341

479

806 

1,040

1,430

1,480

*1,440

1,310

1,380

1,850

2.160

2,160

1,530

1,170

1,040

1,030

1,080

26,667

860

52,890

Apr.

1,040

864

*772

740

792

796

744

724

688

796

976

1,150

1,220

1,280

1,360

1,420

1.450 

1,350

1,280

1,250

1,250

1,260

1,240

1,180

1,080

1,010

976

880

764

666

30,978

1,033

61,440

May

586

516

480

504

676

712

772

852

800

*708

700

648

564

501

450

411

388 

393

423

468

489

489

489

492

486

456

438

432

375

348 

552

16,378

528

32,490

June

558 52"5~

502

290

272

258

258

197

171

151

*124

126

114

112

151

151

119 

105

92

67

81

81

74

70

66

56

46

59

54

52_

4,222

141

8,570

July

51

55

55

3T

54

55

54

32

31

25

21

20

18

18

18

19

21 

21

21

18

17

16

16

16

14

*11

Ii5

10

11

10 

9.5

656.0

21.2

1,300

Aug.

9.5

9^

10

10

11

12

14

14

*15

12

12

12

12

12

15

14

14

12

11

11

10

12

12

15

12

12

14

18

23" 21

17

401.0

12.9

795

Sept.

Tg- 16

15

13

14

15

15

12

12

15

15

12

12

15

14

10

9.0

9.5

7.5

6.8

6.4

674

6.4

6.4

6.8

6.8

6.8

6.4

6.4

8.0

312.6

10.4

620

Calendar year 1955; Max 1,180 Mln 3.7 Mean 95.9 Ac-ft 69,450

Water 'ater year year 1955-56; la&b-ijb: Max Max 2,160 Z,160 Mln Mln 6.4 6.4 Mean Mean 288 288 Ac-ft Ac-ft 208,800 Z08.800

Peak discharge (base. 800 cfs). Dec. 22 (6:50 p.m.) 1,450 cfs (7.49 ft); Jan. 16 (6:50 a.m.) 

.,740 cfs (8.09 ft); Jan. 23 (7 a.m.) 1,290 cfs (7.09 ft); Feb. 22 (l2 p.m.) 1,270 cfs (7.06 ft); 

[ar. 1 (9 p.m.) 826 cfs (5.94 ft); Mar. 26 (2 p.m.) 2,440 cfs (9.49 ft); Apr. 16 (9 p.m.) 1,530 cfs 

7.76 ftl.

1

Mai. _

(7.76 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice
MALHEUR RIVER BASIN 161

Malheur River below Warmsprings Reservoir, near Riverside, Oreg.

Location. Lat 43°34', long 118"12', in SW£ sec. 17, T. 23 S., R. 37 E., on left bank 

1 mile downstream from Warmsprings Dam, 3 miles upstream from South Pork, and 4 miles 

northwest of Riverside.

Drainage area. 1,100 sq mi, approximately.

Records available. January 1906 to March 1907 and December 1908 (gage heights only), 

January 1909 to September 1910, December 1914 to July 1917, March 1919 to September 

1956. Records for January 1906 to March 1907, published in WSP 272 and 370 have been 

found to be unreliable and should not be used. Published as Middle Fork Malheur River 

at Riverside, 1906-7, as Middle Fork of Malheur River above South Pork, at Riverside, 

1909-10, as Malheur River above South Fork, at Riverside, in WSP 370, 1906-10, and as 

Malheur River at Warm Springs reservoir site, near Riverside, 1914-17.

Gage. Water-stage recorder and concrete control. Altitude of gage is 3,305 ft (by barometer). Prior to Dec. 9, 1914, staff or chain gages at several sites 3 miles downstream, 200 ft upstream from South Fork at various datums. Dec. 9, 1914, to July 24, 

1917, water-stage recorder at site 1 mile upstream and 500 ft upstream from dam site at 

different datum. Mar. 18, 1919, to Apr. 27, 1920, staff gage at site 1 mile upstream 

and 250 ft downstream from dam at different datum. Apr. 28, 1920, to Sept. 28, 1949, 

hook gage at different sites within 80 ft of present site and at present datum.

Average discharge. 37 years (1919-56), 162 cfs (117,300 acre-ft per year).

Extremes. Maximum discharge during year, 660 cfs July 7 (gage height, 5.14 ft); minimum, 

0.2 cfs Oct. 16 to Jan. 14.

1909-10, 1915-17, 1919-56: Maximum discharge observed, 7,200 cfs Mar. 1, 1910 

(gage height, 10.7 ft, site and datum then in use), from rating curve extended above 

820 cfs by logarithmic plotting; no flow at times.

Remarks. Records good except those below 10 cfs which are poor. Flow completely regulated since November 1919 by Warmsprings Reservoir (see p. 167). Diversions for irrigation of about 13,000 acres above station.

Revisions (water years). WSP 833: 1936. WSP 1063: 1942-45. WSP 1397: 1909-10, 1917. 

See also Records available. Revised figures of discharge, in cubic feet per second, 

for the water year 1955, superseding those published in WSP 1397, are given herewith:

Date

1955

Aug. 18

19

20

21

22

23

24

25

26

Discharge

11

10

6

2

6

10

9

8

8

Date

1955-Con.

Aug. 27

28

29

30

31

Sept. 1

2

3

4

Discharge

6

7

6

6

5

4

4

4

4

Date

1955-Con.

Sept. 5

6

7

8

9

10

11

12

13

Discharge

4

4

3

3

3

3

3

4

4

Date

1955-Con.

Sept. 14

15

16

17

18

19

20

21

22

Discharge

4

5

5

6

6

6

6

5

4

Date

1955-Con.

Sept. 23

24

25

26

27

28

29

30

Discharge

4

3

3

6

7

7

8

6

Month

Water year 1954-55. .................

Cfs-days

35,239

Maximum

8

505

Minimum

2

0

Mean

96.5

Runoff in 

acre-feet

4,220

274

69,890
162 MALHEUR RIVER BASIN

Malheur River below Warmsprings Reservoir, near Riverside, Oreg. Continued

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

2.7

2.8 

3.0 

3.2 

3.4

3.7 

4.0 

4.5 

5.0 

5.5

143 

34O 

590 

840

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

4

5

6

6

5

5

6

10

12

8

2

1

1

1

1

> .2

74.2

2.39

147

Nov.

> 0.2

6.0

0.20

12

Dec.

> 0.2

6.2

0.20

12

Jan.

> 0.2

* .5

11.3

0.36

22

Feb.

* 0.5

14.5

0.5O

29

Mar.

> 0.5

15.5

0.50

31

Apr.

> 0.5

21

184

199

230

508

308

308

308

239

122

115

115

115

117

117

117

161

195

195

248

3,727.0

124

7,390

May

405

405

405

410

410

410

308

254

254

180

106

110

112

106

101

15B- 84

184

214

23O

259

331

375

380

395

425

430

42O

331

308

308

8,805

284

17,460

June

286

26S

272

290

29O

290

286

277

277

277

*277

277

308

322

360

375

370

370

370

370

370

375

415

465

48O

48O

48O

525

560

585

10,947

365

21,710

July

580

565

565

565

565

565

620

645

645

645

645

645

645

645

645

645

645

620

615

590

580

58O

580

55O

54O

*540

540

520

515

515

50O

18,260

589

36,220

Aug.

475

465

465

425

415

415

415

40O

*395

395

395

395

395

390

390

400

410

410

410

430

450

470

520

545

540

535

50O

44O

410

395

565

13,460

434

26.7OO

Sept.

355

355

350

350

350

318

3O4

3O4

304

282

272

272

272

250

238

238

238

226

218

199

192

177

17O

167

152

149

149

149

130

122

7,252

242

14,380

Calendar year 1955: Max 505 Min 0 Mean 92.3 Ac-ft 66,830

Water year 1955-56: Max 645 Min 0.2 Mean 171 Ac-ft 124, 1OO

* Discharge measurement made on this day.

Note.--NO gage-height record Oct. 16 to Apr. 11; discharge estimated on basis of observer's notes.
MALHEUR RIVER BASIN 163

North Fork Malheur River above Agency Valley Reservoir, near Beulah, Oreg.

Location. Lat 43°58', long 118°11', in sec. 33, T. 18 S., R. 37 E., on left bank 

3 miles upstream from Warm Springs Creek, 4 miles upstream from Agency Valley Dam, 

and 4 miles northwest of Beulah.

Drainage area. 355 sq mi.

Records available, January to September 1914, June 1936 to September 1956. Published 

as "at Scott's Ranch, near Beulah" in 1914.

Gage. Water-stage recorder. Altitude of gage is 3,350 ft (by barometer). Jan. 1 to 

sept. 30, 1914, staff gage at same site at different datum.

Average discharge . 20 years (1936-56), 126 cfs (91,220 acre-ft per year)/

Extremes.--Maximum discharge during year, 1,080 cfs Mar. 26 (gage height, 2.76 ft); minimum, 16 cfs Dec. 5.

1914, 1936-56: Maximum discharge, 1,300 cfs Mar. 25, 1952 (gage height, 4.17 ft) 

from rating curve extended above 530 cfs by logarithmic plotting; maximum gage height, 

4.60 ft Mar. 26, 1940; minimum discharge recorded, 12 cfs Jan. 27, 1948, but may have 

been leas at times during periods of ice effect.

Remarks. Records good except those for periods of ice effect, which are poor. Diversions 

for irrigation of about 900 acres of which about 50 acres are below station.

Revisions [water years). WSP 883: 1938(M). WSP 1093: 1944(m). WSP 1397: 1914, 1937, 

1941-42, 1944, 1950.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Nov. 20 Nov. 21 to Sept. 30

-0.2

0.0

-0.3 -.2 

0.0

0.2 

.5

1.0

90 

147 

£75

1.5 

2.0 

2.5

435

650

920

Discharge, in oublo feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

45

43

42

*41

46

46

43

43

42

45

51

46

45

43

43

43

42

42

42

43

43

45

45

45

*45

45

46

46

47

51 

54

1,388

44.8

2,750

Nov.

52

41

52

52

55

50

50

48

48

48

48

42

40

35

3£

40

50

70

90

100

80

*65

60

58

55

58

86

86

66

58

1,713

57.1

3,400

Dec.

58

52

42

35

29

25

30

35

40

45

48

55

50

24

25

35

50

67

81

185

305

514 3~53~

220

180

192

178

85

64

56 

112

3,270

105

6,490

Jan.

118

116

116

*110

97

85

77

70

58

67

83

79

77

70

111

194

129

114

101

110

103

108

112

83

67

62

60

58

56

54 

50

2,795

90.2

5,540

Feb.

55

60

65

70

65

60

60

65

70

80

90

100

130

100

*85

60

70

80

90

110

160

200

180

143

125

114

116

112

114

2,829

97.6

5,610

Mar.

133

176

194

158

127

118

104

173

169

129

97

101

149

137

163

238

314

376

442

482

*460

482

601

750

800

806

530

470

452

474 

474

10,279

332

20,390

Apr.

421

379

*365

365

376

347

353

335

353

407

466

522

526

575

*610

660

635

605

605

625

660

665

665

635

585

542

506

466

432

396

15,082

503

29, 910

May

368

344

341

386

410

414

414

470

*449

449

446

407

365

365

296

272

266

284

317

353

365

365

365

379

368

338

332

302

275

254 

245

10,979

354

21,780

June

248

251

23T

225

212

202

190

169

156

145

*143

143

137

141

151

143

135

125

121

123

118

110

104

104

101

99

95

90

86

79

4,380

146

8,690

July

77

79

88

81

81

77

74

72

70

69

72

70

*72

69

67

66

62

61

59

58

58

55

55

52

49

48

50

55

56

53 

52

2,007

64.7

3,980

Aug.

50

52

53

52

52

55

5855-

*55

52

50

48

46

45

40

40

39

39

39

39

39

38

38

36

3.5

39

45

46

45

45 

46

1,411

45.5

2,800

Sept.

46

Te

46

48

49

48

48

48

48

49

49

50

50

50

50

52

52

52

50

52

52

52

52

52

52

52

52

53

53

52

1,505

50.2

2,990

Calendar year 1955: Max 514 Mln 24 Mean 79.6 Ac-ft 57,660

Water year 1955-56: Max 806 Mln 24 Mean 157 Ac-ft 114,300

Peak discharge (base.500 cfs). Dec. 22 (12 p.m.) 685 cfs (2.07 ft); Mar-. 26 (4 a.m.) 1,080 cfs 

(2.76 ft); Apr. 17 (2 a.m.) 695 cfs (2.09 ft).

* Discharge measurement made on this day.

Hote. Stage-discharge relation affected by Ice Nov. 13-25, Dec. 4, 6-10, 15-17, 31, Jan. 2, 8, 

Jan. 26 to Feb. 23.
164 MALHEOR RIVKR BASIN

North Pork Malheur River at Beulah, Ores.

Location. Lat 43°54', long 118°09', In M&NEi sec. 22, T. 19 S., R. 37 E., on left bank 

at Beulah, a quarter of a mile downstream from Agency Valley Dam and 12 miles northwest of Juntura.

Published as "near Beulah" June 1926 to

Drainage area. 440 sq mi, approximately.

Records available. June 1926 to September 1956. 

September 1935.

Qage. Water-stage recorder. Datum of gage is 3,262.20 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. June 26, 1926, to Apr. 24, 1936, water-stage 

recorder at site 1 mile downstream at different datum. Apr. 25, 1936, to Sept. 30, 

1949, staff gage at site 20 ft downstream at present datum.

Average discharge. 21 years (1935-56), 133 cfs (96,290 acre-ft per year).

Extremes. Maximum discharge during year, 677 cfs Apr. 21 (gage height, 3.39 ft); no flow 

Oct. 13 to Dec. 21.

1926-56: Maximum discharge, 7,000 cfs May 7, 1942 (gage height, 8.4 ft, from 

floodmark), from computation of peak flow over dam, caused by failure of gates at 

- Agency Valley Dam; no flow at times.

Remarks. Records good except those below 10 cfs, which are poor. Plow regulated by 

Agency Valley Reservoir since December 1935 (see p. 167). Diversions for irrigation 

of about 3,000 acres above station. Prior to Apr. 25, 1936, station was below intake 

of 2 diversions for irrigation of about 120 acres below station.

Revisions (water years). WSP 1397: 1927-32, 1934, drainage area.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

0.4 

2.0 

5.0

44

1.0 

1.5 

2.0 

3.0 

4.O

170

280

560

860

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

3O

31

Total

Mean

Ac- ft

Oct.

43

43

43

*44

4?

22

11

13

14

14

15

6

O

0

O

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

310

10.0

615

Nov.

0

0

0

Dec.

O

0

0

0

O

0

0

0

0

O

0

0

0

0

0

0

0

0

0

0

0

.1

.1.1

.1

47?

.2

.2

.2

.2

1.6

0.05

3.2

Jan.

"73" O.3

.3

**.3

.3

.3

.3

.

'.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

76

.6

.6

13.5

0.44

27

Feb.

0,6

. b

.6

.6

.7

'.B

.8

.8

.8

.8

.8

.8

.8

.8

.9

79

.9

.9

.9

.9

22.0

0.76

44

Mar.

0.9

.9

1.0

l.O

1.0

1.0

1.0

1.0

1.1

1.1

1.1

1.1

1.1

1.2

1.2

1.2

1.2

1.2

1.3

1.3

*1.3

1.5

1.7

2.0

2.2

2.4

2.4

2.4

120

218

220

595.8

19.2

1,180

Apr.

220

25?

*222

224

224

224

226

226

226

250

258

255

255

258

258

260

262

265

446

566

614

653

665

665

668

665

647

638

638

581

11,781

393

23,370

May

407

389

365

318

318

330

389

449

479

*121

491

458

404

386

380

378

375

375

375

375

375

375

372

370

368

368

325

308

338

330

322

11,783

380

23,370

June

325

325

328

330

312

305

300

298

298

300

*300

300

300

348

332

288

278

280

280

280

282

282

298

305

305

305

322

352" 368

362

9,298

310

18,440

July

362

3SO

380

360

358

355

305

282

282

285

295

300

300

300

298

278

275

272

270

268

268

250

245

262

275

*265

260

255

252

250

242

8,989

290

17,830

Aug.

245

248

248

248

245

245

245

245

*E45

245

230

226

228

255

275

275

290

300

300

278

270

270

272

272

270

270

268

250

245

230

224_

7,957

257

15,780

Sept.

222

222

214

206

204

230

252

255

25F

255

252

248

240

235

220

218

208

200

192

188

166

152

152

152

152

152

150

150

148

148

6,038

201

11,980

Calendar year 1955 : Max 355 Min 0 Mean 87.6 Ac-ft 63,410

Water year 1955-56 : Max 668 Min 0 Mean 155 Ac-ft 112,600

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.

Note. No gage-height record Oct. 13 to Mar. 20; discharge estimated on basis of 1 observation of 

o flow, 1 field estimate, weather records, and records for Agency Valley Reservoir.
MALHEUR RIVER BASIN 165

Malheur River at Little Valley, near Hope, Oreg.

Location. Lat 43°54', long 117°30', in SE£ sec. 24, T. 19 S., R. 42 E., on right bank 

5*00 ft downstream from bridge at Little Valley, 8 miles southwest of Hope, and 

14 miles southwest of Vale.

Drainage area. 3,010 sq mi, approximately. 

Records available. April 1949 to September 1956.

Sage.--Water-stage recorder. Datum of gage is 2,424.13 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947.

Average discharge.--? years, 182 cfs (131,800 acre-ft per year).

Extremes. Maximum discharge during year, 3,530 cfs Feb. 23 (gage height, 6.49 ft), 

from rating curve extended above 1,700 cfs on basis of slope-area determination of 

peak flow of Feb. 24, 1957 ; minimum, 12 cfs Oct. 27 (gage height, 1.49 ft).

1949-56: Maximum discharge, 8,800 cfs Mar. 26, 1952 (gage height, 9.00 ft); minimum, that of Oct. 27, 1955.

The two greatest floods known occurred in March 1894 and March 1910.

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

which are poor. Vale-Oregon Canal diverts as much as 600 cfs at Namorf for irrigation of about 31,000 acres, mostly below station; no other large diversions above 

station, but many small ones. Flow regulated by Warmsprings and Agency Valley 

Reservoirs (see p. 167).

Revisions (water years). WSP 1217: 1949-50(M). WSP 1397: 1950.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.5 

1.7 

2.0 

2.5 

3.0

13

31

74

185

375

3.5 

4.O 

5.0

6.0

620

940

1,8OO

2,910

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

3

9

10

11

1Z

13

14

15

16

17

18

19

ZO

21

22

23 

24

25

26

27

28

29

3O

31

Total

Mean

Ac- ft

Oct.

29

31

34

*27

21

ZO

ZO

ZO

19

19

18

18

17

16

16

16

15

15

15

15

14

14

14 

14

14

14

*13

II

15

15

15

557

18. 0

1,100

Nov.

15

T5

25

34

35

34

36

Z6

25

29

27

28

31

b28

a25

a30

a40

a50

a55

a60

*58

52

61 

54

55

54

52

5O

48

47

1,182

39.4

2,340

Dec.

48

51

48

b45

b40

b30 b35~

35

b4O

41

48

50

5O

b45

40

44

b48

52

54

94

102

119

169 

25O

T§7

153

b!6Q.

b!30

bllO

b9O

blOO

Z,515

81.1

4,99O

Jan.

b95

b9O

b88

*85

87

79

74

83

71

69

7Z

68

65

69

112

1,Z8O

951

430

3O6

Z43

203

191

1,230 

1.560

490

322

ZO3

b!50

blOO

b80

b7O

8,819

Z84

17,490

Feb.

b7O bTB"

b8O

b90

blOO

b95

b90

b90

b95

blOO

bllO

b!20

b!50

b!3O

*b!15

blOO

bllO

blZO

b!30

151

b63O

998

1.900

641

326

209

172

151

156

7,304

252

14,490

Mar.

156

250

500

435

278

197

151

136

3T8

384

240

174

139

139

153

188

388

510

632

*674

605

5Z5

455 

44O

445

370

266

Z46

200

Z14

339

10,147

327

20,130

Apr.

339

35?

236

Z12

203

*194

185

163

161

151

1Z3

87

ITC

151

163

Z29

222

Z26

Z18

306

274

302

330 

286

Z43

Z54

294

278

3ZZ

33O

6,900

Z30

13,690

May

322

334

344

33O

Z98

294

326

3 SO

*370

598

393

278

246

2OO

151

139

127

TSB" 1Z5

188

240

185

Z09

246

250

262

318

Z86

246

240

203

8,O94

261

16,050

June

197

191

17Z

182

209

197

194

197

18Z

*174

169

153

iil TBT

21Z

240

215

194

197

203

191

163

153 

194

226

229

194

200

Z5O

262

5,841

195

11,590

July

290

3OZ

314

314

306

302

302

302

Z98

302

302

326

334

32?

326

322

302

Z86

290

Z82

274

254

240 

Z43

229

Z29

*236

25O

2Z6

218 A- c

eOb

8,759

Z83

17,370

Aug.

240

218

209

Z15

ZZZ

203

182

180

174

*169

166

163

153

146

ISS

156

158

174

172

17Z

172

163

177 

Z22

Z43

254

Z78 ZSB"

194

188 

17Z

5,9Z4

191

11,750

Sept.

 158

161

TSS

144

13Z

134

148

158

158

158

151

151

144

141

141

130

125

1Z3

119

119

110

102

98 

96

9O

87

85

W

87

85

3,775

126

7,490

Calendar year 1955 : Max Z50 Mln 13 Mean 64.5 Ao-ft 46,720

Water year 1955-56: Max 1.9OO Mln 13 Mean 191 Ac-ft 138,500

* Discharge measurement made on this day.

a No gage-height records discharge estimated on basis of weather records and records for station 

ear 1 Drewsey. 

b Stage-discharge relation affected by Ice.
166 MALHEUR RIVER BASIN

Bully Creek near Vale, Oreg.

Location. Lat 43°57'30", long 117°20'30", in SW£ sec. 33, T. 18 S., R. 44 E. , on right 

bank 5 miles southwest of Vale and 7 miles upstream from mouth.

Drainage area. 570 sq mi (revised), approximately.

Records available.--May 1933 to September 1934, November 1934, March 1935, March, April

1936. June 1937 to September 1956. Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder and concrete control. Altitude of gage is 2,313 ft (by 

levels to reference point furnished by Union Pacific Railroad). Prior to Mar. 15,

1937. water-stage recorder or staff gage at site 2 miles upstream at different datum. 

Mar. 15, 193V, to Jan. 1, 1940, water-stage recorder and concrete control at present 

site at datum 0.38 ft higher.

Average discharge. 20 years (1933-34, 1937-56), 39.6 cfs (28,670 acre-ft per year).

Extremes.--Maximum discharge during year, 810 cfs Feb. 23 (gage height, 4.00 ft); minimum daily, 1.7 cfs Nov. 14, 15.

1933-34, 1937-56: Maximum discharge, 3,400 cfs Feb. 27, 1940, from rating curve 

extended above 1,000 cfs; maximum gage height, 6.98 ft Mar. 26, 1952; no flow at 

times.

uccasionai i luctuations caused Dy releases iron. vaie-uregon uanai wnicn diverts 

water for irrigation of lands west of Vale; considerable return flow at times enters 

Bully Creek above station. Diversions above station for irrigation of about 

7,000 acres.

Revisions (water years ). WSP 1183: 1946-47. WSP 1397: 1948.

Rating table, water year 1955-56, except periods of loe 

control (gage height, In feet, and discharge, In cub

effect and shiftingc feet per second)

1.1

1.3

4.0

8.5

15

31

140

250

395

580

Discharge, In cubic feet per second, water year October 1955 to Septembe

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3.0

3.0

3.0

*2.3

2.3

2.4

2.4

2.4

2.3

2.3

2.1

2.0

1.9

1.8

1.8

1.9

2.0

2.0

2.1

2.1

2.0

2.0

2.0

2.0

2.0

2.1

*Z.Q

2.0

2.0

2.0 

2.0

67.2

2.17

133

Nov.

2.0

2.0

2.0

2.1

2.0

2.1

2.0

2.0

2.1

2.0

1.9

1.8

bl.8

bl.7

bl.7

bl.8

b2.0

2.3

2.4

2.6

*3.0

2.5

2.6

3.1

5.6

6.2

6.5

6.8

9.2

6.0

91.8

3.06

182

Dec.

7.0

6.8

5.8

6.0

5.6

5.2

4.8

5.0

5.2

5.0

5.6

5.6

5.4

b5.0

4.4

5.0

5.2

5.2

5.8

85

94

186

230 im

89

73

blOO

b80

b60

b55 

b50

1,335.6

43.1

2,650

Jan.

b45

b40

34

*32

28

26

23

22

20

18

17

17

18

19

23

314

180

116

93

85

76

70

74

68

59

49

b40

b30

b25

b20 

b!5

1,696

54.7

3,360

Feb.

b!5

b!5

b!8

b20

b25

b25

b24

b22

b21

b20

22

25

29

29

*b20

b!9

b!8

b!8

b20

23

57

217

d560

d228

d!28

d!05

d89

d98

d!52

2,062

71.1

4,090

Mar.

d235

d341

d368

d268

d!90

d!35

d!05

dl!6

d260

d!78

d!20

dllO

dl!2

dl!2

dl!4

d!70

dZ50

d371

d409

*d380

356

335

326

338

338

317

*268

202

170

154 

135

7,283

235

14,450

Apr.

~9i 118

75

66

65

*45

37

37

34

31

22

17

12

17

6.2

7.0

7.2

7.2

8.2

7.8

7.5

5.8

5.8

5.6

5.4

5.8

16

9.8

5.6

5.4

786.3

26.2

1,560

May

5.2

5.0,

575

11

18

20

20

25

*31

51

36

29

15

13

14

16

18

19

21

19

15

13

12

11

10

10

18

18

18

17 

15

535.0

17.3

1,060

June

16

13

17

18

18

16

15

16

19

*21

21

23

24

26

27.

27

21

21

20

19

19

18

20

24

22

19

22

19

17

17

598

19.9

1,190

July

17

19

19

19

20

21

24

21

22

19

20

19

20

19

18

19

19

17

17

14

13

13

13

13

15

14

*14

12

13

13 

12

528

17.0

1,050

Aug.

12

12

15

16

15

16

18

19

17

*17

16

16

15

15

16

17

18

21

23

22

20

20

19

19

20

24

25

26

24

23 

23

579

18.7

1,150

Sept.

21

87

48

17

17

16

17

17

18

17

19

26

22

20

20

20

20

23

26

27

27

24

25

26

24

22

21

22

20

20

729

24.3

1,450

Calendar year 1955: Max 230 Mln 1.5 Mean 8.80 Ac-ft 6,370

Water year 1955-56: Max 560 Mln 1.7 Mean 44.5 Ac-ft 32,320

Peak discharge (base, 130 cfs). Dec. 22 (10 p.m.) 406 cfs (3.03 ft); Dec. 27 (12 m. ) 178 cfs

JanT 16 (10 a.m.) 444 cfs (3.14 ft); Feb. 23 (5:3O a.m.) 810 cfs (4.00 ft); Ma

7 a.m.) 350 cfs (2.85 ft); Mar. 20 (4 to 5 p.m.) 434 cfs

2.19 ft __ _ 

(10 a.m.) 430 cfs (3.10 ft) 

(3.11 ft); Sept. 2 (10 a.m.) 220 cfs(2.42 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

d Doubtful gage-height record; discharge computed from doubtful gage-height record.

Note. Shifting-control method used Oct. 1 to Nov. 12, Apr. 14 to Aug. 8, Sept. 2-30.
MALHEOR RIVER BASIN 167

Reservoirs In Malheur River basin, Oreg.

Warmsprings Reservoir. Lat 43°35', long 118°12', In SEj sec. 8, T. 23 S., R. 37 E., near 

right end of dam on Malheur River, 4 miles upstream from South Pork and 3 miles northwest of Riverside. Drainage area 1,100 sq mi, approximately. Records available, January 1920 to September 1956. wire-weight gage read once daily with some exceptions 

April to September, and about once each week October to April. Datum of gage is 

3,327 ft above mean sea level (levels by Bureau of Reclamation); gage readings have 

been reduced to elevations above mean sea level. Maximum contents during year, 190,300 

acre-ft May 31 to June 4 (elevation, 3,405.85 ft); minimum, 55 acre-ft Oct. 1 (elevation, 3,328.15 ft). Maximum contents during period 1920-56, 196,000 acre-ft Apr. 7, 

1942 (elevation, 3,407.08 ft); no contents Sept. 18 to Nov. 1, 1929, Aug. 26 to sometime in November 1935, Sept. 18 to Oct. 11, 1950.

Reservoir is formed by concrete-arch dam; capacity, 191,000 aere-ft between elevations 3,327 ft (bottom of outlet tunnel) and 3,406 ft (top of 5-ft flashboards). Dead 

storage, 1,400 acre-ft below elevation 3,327 ft, not included in records presented. 

Storage began in 1919. In 1926, a half interest in reservoir was purchased by the Federal CJovernment for Vale project of Bureau of Reclamation. Water used to irrigate 

lands on both sides of river between Nantorf and Ontario. Data for computing capacity 

table furnished by Bureau of Reclamation.

Agency Valley Re servo jr. Lat 43°55', long 118°09' ( in SE^ sec. 15, T. 19 S., R. 37 E., in 

control house at dam on North Pork Malheur River, a quarter of a mile northwest of 

Beulah. Drainage area 440 sq mi, approximately. Records available, December 1935 to 

September 1956. Pressure gage with mercury column read once each day except Oct. 5-9, 

Oct. 11 to Mar. 18 when only month-end readings were made. Datum of gage is at mean 

sea level (levels by Bureau of Reclamation); add 7.49 ft to obtain mean sea level elevation, datum of 1929, supplementary adjustment of 1947.

Maximum contents during year, 60,110 acre-ft Apr. 25, 26 (elevation, 3,340.10 ft); 

no contents Oct. 1-4. Maximum contents observed during period 1935-56, 62,770 acre-ft 

May 3, 1941 (elevation, 3,341.50 ft); no contents Sept. 17 to Oct. 13, 1950, Aug. 28 to 

Oct. 4, 1955.

Reservoir is formed by earth-fill, rock-faced dam; storage began in December 1935. 

Capacity, 59,920 acre-ft between elevations 3,263.21 (bottom of outlet tunnel) and 

3,340 ft (top of 17-foot spillway gates); with gates open the capacity if 32,220 acreft. No dead storage. Water is used for irrigation of lands below Juntura, on Vale 

project of Bureau of Reclamation. Capacity table furnished by Bureau of Reclamation.

Revisions. WSP 1397: Drainage area.

Other Reservoirs. There are several other reservoirs in the Malheur River basin, all with 

less than 3,500 acre-ft capacity except Willow Creek No. 3 Reservoir near Malheur, 

which has a capacity of 49,000 acre-ft.

Month-end elevation and contents, water year October 1955 to September 1956

Date

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

Calendar year 1955....

Apr. 30.. ...............

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

Water year 1955-56....

Warmaprlngs Reservoir

Elevation 

(feet)

3,328.15 

3,353.40

-

3,387.37 

3,402.38 

3,405.85 

3,402.28 

3,392.80 

3,384.40

-

Contents 

(acrefeet)

55 

a2,320 

a6,440 

22,280

-

a42,780 

a58,250 

115,100 

174,800 

190,300 

174,300 

134,800 

105,000 

a87,300

-

C hange In 

contents 

(acre-feet)

+2,260 

+4,120 

+15,840

+3,000

+20,500 

+15,470 

+56,850 

+59,700 

+15,500 

-16,000 

-39,500 

-29,800 

-17,700

+87,240 '

Agency Valley Reservoir

Elevation 

(feet)

3,285.70 

3,294.30 

3,305.15

-

3,312.30 

3,317.70 

3,334.20 

3,339.60 

3,339.62 

3,333.90 

3,324.70 

3,313.88 

3,303.93

-

Contents 

(acrefeet)

0 

2,220 

5,740 

12,640

-

19,290 

25,420 

49,430 

59,170 

59,210 

48,910 

34,600 

20,980 

11,690

-

Change In 

contents 

(acre-feet)

+2,220 

+3,520 

+6 , 900

-4,260

+6,650 

+6,130 

+24,010 

+9,740 

+40 

-10,300 

-14,310 

-13,620 

-9,290

+11,690

a No gage-height record; contents interpolated.
168 PAYETTE RIVER BASIN

South Pork Payette River at Lowman, Idaho

Location. La t 44°05'00", long 115°37'30", in SW£ sec. 27, T. 9 N., R. 7 E., on right bank 

1,200 ft upstream from Rock Creek, half a mile northwest of Lowman, and 4,100 ft downstream from Clear Creek.

Drainage area. 456 sq mi.

Records available. May 1941 to September 1956.

. Water-stage recorder. Altitude of gage is 3,790 ft (from river-profile map), 

ior to Dec. 18, 1941, staff gage at site 900 ft upstream at different datum.

Average discharge. 15 years, 901 cfs (652,300 acre-ft per year).

Extremes. Maximum discharge during year, 7,050 cfs May 24 (gage height, 7.45 ft); minimum, 

207 cfs Dec. 14 (gage height, 2.53 ft).

1941-56: Maximum discharge, that of May 24, 1956; minimum, 148 cfs Dec. 9, 1944 

(gage height, 2.40 ft).

Remarks. Records excellent. No regulation. Several small diversions for irrigation and 

placer mining, the return flow from which enters river above station.

Rating tables, water year 1955-56 (gage height, in feeb, and discharge, 

in cubic feet per second)

Oct. 1 to May 19 May 20 to Sept. 30

2.6 225

2.8 288

3.0 372

3.3 540

3.6 760

4.0 1,110

4.5 1,630

5.0 2,250

5.5 2,960

6.1 3,970

4.5 1,630

5.0 2,290

5.5 3,100

6.0 4,010

6.5 5,080

7.3' 7,050

Note. Same as preceding 

table below 4.5 ft.

ischarge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

319 

315

311

332" 308

319

323

323

315

319

363

340

340

332

323

323

319

315

315

315

*315

319

315

308

308

323

319

315

315

387

m

10,047

324

0.711

0.82

19,930

Nov.

336 

308

332

345

358

327

319

315

315

407

428

354

308

336

248

254

327

345

450

756

666

521

450

417

392

392

402

387

372

*368

11,515

384

0.842

0.94

22,840

Dec.

363 

350

340

308

254

350

358

323

363

345

340

397

358

242

300

382

377

363

422

534

701

2,120

2.800

2,010

1,390

1,110

957

824

704

*666

680

21,031

678

1.49

1.72

41,710

Jan.

555" 624 

561

547

540

515

497

490

461

467

450

439

444

439

507

562

496

472

461

450

444

444

444

422

358

417

422

358

402

392

315

14,436

466

1.02

1.18

28,630

Feb.

*300 

327

372

412

456

407

407

382

382

402

402

407

372

358

350

35B" 285

372

363

372

358

358

354

345

345

340

336

332

332

10,586

365

0.800

0.86

21,000

Mar.

336 

350

345

345

340

319

315

358

336

327

STB" 308

354

315

319

327

345

382

439

 484

534

589

744

1,000

1.190

1,080

885

776

736

760

768

16,021

517

1.13

1.31

31,780

Apr.

752 

736

736" 728

784

776

808

784

849

1,100

1,290

1,320

1,410

1,560

1,820

1,910

1,830

1,970

2,210

2,460

2,700

2.810

2,760

2,620

*2,520

2,440

2,330

2,200

2,020

1 j 880

50,113

1,670

3.66

4.09

99,400

May

H?§ 1,820

1,930

1,980

2,000

2,040

2,180

2,250

2,330

2,260

2,070

1,910

1,810

1,870

2,130

2,630

3,260

3,950

4,520

5,130

5,720

6,100

6,840

6,590

*6,300

6,450

6,000

5,800

5, 980

6,400

113,860

3,673

8.05

9.29

225,800

June

6.800 

6,550

6,020

5(620

5,010

4,250

3,800

3,860

4,400

4,870

4,990

4,700

4,500

4,380

4,170

3,710

3,200

*2,960

3,080

3,450

3,170

2,840

2,830

2,810

2,790

2,710

2,740

2,810

2,910

2, 660

118,590

3,953

8.67

9.67

234,200

July

2.540 

2,170

2,030

1,880

1,850

1,850

1,850

1,770

1,770

1,790

1,800

1,760

1,650

1,550

1,480

1,390

1,510

1,260

1,240

1,230

1,210

1,170

1,110

*1,090

1,050

1,010

975

948

921

849

45,188

1,458

5.20

5.69

89,630

Aug.

108" 824 

792

768

744

744

768

720

696

696

680

659

645

638

645

631

617

603

589

575

568

554

547

540

534

547

568

568

*534

521

509

19,832

640

1.40

1.62

39,540

Sept.

484" 497 

478

472

467

461

450

450

439

439

439

435

428

422

417

412

412

402

402

597

402

402

597

597

587

587

582

40?

402

592

12,751

425

0.952

1.04

25,290

Calendar year 1955: Max 3,990 Min 200 Mean 742 Cfsm 1.63 In. 22.10 Ac-ft 537,200

Water year 1955-56: Max 6,840 Min 242 Mean 1,213 Cfsm 2.66 In. 36.23 Ac-ft 880,600

* Discharge measurement made on this day.
PAYETTE RIVER BASIN 169

Deadwood Reservoir near Lowman, Idaho

Location. Lat 44°18', long 115°39', in SE£ sec. 8, T. 11 N., R. 7 E., at dam on Deadwood 

River, 15 miles north of Lowman.

Drainage area. 108 sq mi.

Records available. October 1935 to September 1956.

Gage. Staff gage on face of dam read once daily. Datum of gage is at mean sea level 

(levels by Bureau of' Reclamation). Datum of Geological Survey levels (1952, preliminary) is 22.8 ft higher.

Extremes. Maximum elevation observed during year, 5,336.45 ft June 6; minimum observed, 

5,284.70 ft Sept. 29.

1935-56: Maximum elevation observed, 5,337.1 ft June 1, 2, 1943; minimum observed, 

5,205.0 ft Sept. 18 to Oct. 11, 1951, when reservoir was drained for repairs.

Remarks. Reservoir is formed by concrete-arch dam, completed in 1930; storage began

HSvT 2, 1930. Reported capacity, 160,400 acre-ft between elevations 5,230.0 ft (minimum operating level because of fish protection, 27 ft above sill of emergency gate in 

front of needle valve) and 5,334.0 ft (crest of spillway). Storage below elevation 

5,230 ft, about 1,500 acre-ft. Water is used to augment flow of Payette River at Black 

Canyon powerplant near Emmett. Small diversion from tributary of Johnson Creek in 

Salmon River basin to Deadwood River basin for supplemental storage in Deadwood Reservoir. Discharge of 0.85 cfs was measured in this canal Sept. 7.

Cooperation. Gage readings furnished by Bureau of Reclamation.

Elevation, In feet, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

ZZ

23

24

25

26

27

28

29

30

31

Oct.

290.55 

290.42

290.20

389.80

289.50

289.10

288.70

288.30

287.90

287.48

287.15

286.70

286.25

285.83

285.75

285.78

285.85

286.00

286.05

286.14

286.20

286.32

286.38

286.46

286.55

286.60

286.73

286.80

286.87

287.05

287.18

Nov.

287.26

287! 40

287.52

287.64

287.68

287.76

387.90

287.95

288.50

288.55

288.56

288.57

288.58

288.61

288.66

288.73

288.80

38"8.88

389.42

389.64

389.80

389.95

290.08

290.20

290.30

390.47

290.60

390.68

290.78

Dec.

290.92

39l!l4

291.17

291.20

291.42

291.52

291.54

391.68

291.74

291.94

292.00

292.10

292.15

392.17

292.45

292.56

292.63

293.86

293.08

293.20

293.80

294.50

295.20

295.60

295.83

296.10

296.32

296.44

296.54

296.85

Jan.

397.00

297J27

297.52

297.68

297.82

297.94

298.10

298.16

298.30

298.46

298.56

298.73

298.76

399.20

299.22

299.27

299.32

299.60

299.63

299.74

299.84

299.96

300.08

300.10

300.22

300.38

300.45

300.53

300.61

300.63

Feb.

-

-

-

-

_

.

301.36

301.40

301.48

301 . 58

301.72

301.78

301.85

301.98

303.02

302.02

302.16

302.23

302 . 38

302.56

302.61

303.73

302 . 80

303.10

303.15

303.18

303.20

303.24

Mar.

303.29 

303.44

303.52

303.60

303.65

303.72

303.80

3O3.9O

303.93

303.97

303.97

303.97

303.97

304.10

304.10

304.15

304.15

304.15

304.19

304.46

304.71

304.79

304.88

305.00

305.16

305.29

305.43

305.50

305.58

305.80

305.94

Apr.

306.00 

306 . 10

306.24

306.36

306.48

306.54

306.72

306 . 80

306.95

307.10

307.26

307.15

307.00

306 . 50

306.00

305.40

305.10

304.80

304.60

304.80

304.60

304.50

304.30

304.30

304.10

304.10

304.10

304.00

303.80

303.60

May

303.40 

303.10

302 . 80

302 . 20

302 . 10

302.00

301 . 88

302.17

303.60

304.50

305.50

306 . 30

306.95

307.55

308.26

309.00

309.90

310.94

312.20

313.77

315.29

316.98

318.70

330.46

322.18

323.68

325.30

326.90

328.48

329.88

331.30

June

552 . 74

335 !24

335.98

336.35

336.45

336 . 42

336.00

335.60

335.90

336.17

336.12

336.02

335.94

335.87

335.82

335.70

335.50

335.44

335.42

335.39

335.30

335.21

335.15

335.12

335.10

334.94

334.90

334.84

334.76

July

334.68 

334.60

334.54

334.47

334.41

334.34

334.27

334.19

334.13

334.05

334.00

333.91

333.92

333.90

333.88

333.86

333.85

333.84

333.83

333.81

333.79

333.77

333.76

333.73

333.69

333.67

333.64

333.65

333.66

333.62

333.54

ftug.

333.40 

333.28

333.10

332.91

332.70

332.44

332.20

331.93

331.67

331.54

331.60

331.64

331.72

331.78

331.84

331.90

331.71

331.19

330.60

330.02

329.38

328.74

328.08

327.39

326.67

325.94

325.30

324.66

3E4.00

323.35

322.70

Sept.

321.76 

320.38

318.99

317.56

316.12

315.42

314.38

312.88

311.38

309.80

308.30

306.70

305.20

303.76

302.48

301.30

300.06

_

297.50

296.10

294.70

293.25

291.81

290.46

289.00

287.68

286.39

285.52

284.70

284 72

Note. ftdd 5,000 ft to obtain elevation above mean sea level. Gage read at Irregular Intervals.

467239 O-58 12
170 PAYETTE RIVER BASIN

Deadwood River below Deadwood Reservoir, near Lowman, Idaho

Location. Lat 44°18', long 115°39', in NE£ sec. 17, T. 11 N., R. 7 E., on right bank 

300 ft upstream from Wilson Creek, a quarter of a mile downstream from Deadwood Dam at 

lower end of Deadwood Basin, 15 miles north of Lowman, and 18 miles upstream from mouth.

Drainage area. 108 sq mi.

Records available. October 1926 to September 1956. Monthly discharge only prior to May 

1927, published in WSP 1317. Published as "at Beaver Creek ranger station, near Lowman prior to October 1934.

Gage. Water-stage recorder. Datum of gage is 5,180.52 ft above mean sea level (levels 

fry Bureau of Reclamation). Datum of Geological Survey levels (1952, preliminary) is 

22.8 ft higher. Prior to June 22, 1935, water-stage recorder at site 600 ft upstream 

at datum 5.85 ft higher. June 22 to Sept. 30, 1935, staff gage at site 20 ft upstream 

at datum 2.00 ft higher. Oct. 1, 1935, to Aug. 3, 1955, water-stage recorder at 

present site at datum 1.00 ft higher.

Average discharge. 30 years (1926-56), 221 cfs (160,000 acre-ft per year).

Extremes. Maximum discharge during year, 2.160 cfs June 7 (gage height, 8.93 ft); minimum, 

0.5 cfs Nov. 24-29 (gage height, 0.75 ft).

1926-56: Maximum discharge, 2,580 cfs July 14, 1953; maximum gage height, that of 

June 7, 1956; no flow or small amount of leakage from reservoir for long periods during 

1934-37 when gates in dam were closed.

Remarks. Records excellent except those below 200 cfs, which are fair. 

Deadwood Reservoir (see preceding page).

Revisions (water years). WSP 1123: 1943.

Plow regulated by

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

101

164

239

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

23

29

30 

31

Total

Mean

Ac-ft

Oct.

202

178

320

397

404

414

414

417

417

419

424

427

427

*E87

2.0

.8

.8

.8

.9

.9

.9

.9

.9

.8

.8

.3

.8

.8

.8

.9

. 8

5,178.5

167

10,270

Nov.

1.8

E.O

E.O

E.O

1.9

.9

.9

.0

.9

.9

.9

.8

.8

.8

.8

.8

.9

.9

.0

.1

.0

.3

.8

.5

75

.5

.5

.5

1.0

1.8

48.1

1.60

95

Dec.

1.8

1.8

1.8

1.8

1.8

1.7

1.8

1.8

1.8

1.8

1.9

2.0

1.9

1.9

2.0

2.0

2.1

2.1

2.1

E.I

2.9

5.1

7.8

8.0

672

5.3

5.1

5.1

4.9

4.7 

4.5

97.6

3.15

194

Jan.

4.5

4.5

4.7

4.5

4.5

4.3

4.3

4.3

4.1

4.1

3.9

3.9

3.7

3.7

3.7

3.7

3.5

3.4

3.2

3.2

3.1

3.1

3.1

3.1

3.1

2.9

2.9

2.9

2.8

2. a

112.4

1.63

223

Feb.

2.9

3.1

3.1

3.1

3.1

3.1

3.1

5.2

3.2

3.2

3 . E

3.1

3.1

3.1

3.1

3.E

3.2

3.2

3.2

3.1

3.1

3.1

3.1

3.1

2.3

2.9

2 .3

2.9

2.9

89.5

3.09

178

Mar.

2.9

3.1

3.1

3.2

3.2

3.2

3.2

3.1

3.1

3.1

3.1

3.1

3.2

3.2

3.2

3.2

3.2

3.4

3.4

3.4

3.5

3.7

3.9

3.9

4.1

4.1

3.9

3.9

3.5

3.4 

3.5

105.0

3.39

208

Apr.

3.4

3.5

3.5

3.5

3.5

3.7

3.9

3.9

4.1

14

216

484

725

956

956

968

964

960

960

960

960

960

960

960

956

956

960

956

952

952

17,766 . 0

59E

35,240

May

952 952"

948

948

952

952

363

11

11

11

11

8.9

7.5

6.8

7.E

9.8

13

18

20

22

25

27

27

30

26

25

35

2 a

25

E2 

EO

6,515.2

210

12,920

June

18

126

555

1,010

1,230

1,300

1 , 640

1,900

1,090

948

1,290

1,400

1,320

*1,260

1,230

1,180

1,100

1,010

948

944

908

853

800

774

741

703

673

661

637

607

28,856

962

57,240

July

569

539

517

493

471

*450

427

412

400

385

378

298

253

260

262

228

210

208

208

210

210

199

184

184

184

186

150

132

159

291 

291

9,348

302

18,540

Aug.

291

327

404

404

466

504

501

517

372

151

E.O

2TO

2.0

*2.4

2.8

213

781

996

996

1,040

,070

,080

,120

,160

,160

,090

,070

,040

,030

,040 

,500

£0,134.2

649

39,940

Sept.

1,810

2,020

2,010

1,990

1,490

902

*1,970

1,960

1,960

1,940

1,930

1,840

1,700

1,560

1,360

1,360

1,370

1,380

*1,430

1,420

1,410

1,350

1,310

1,300

1,200

1,130

882

741

251

1.5

43,057 . 5

1,435

85,400

Calendar year 1955: Max l,57u Mln 0.5 Mean 189 Ac-ft 137,200

Water year 1355-56: Max 2,OEu Min 0.5 Mean 353 Ac-ft 260,400

ade on this dav
PAYETTE RIVER BASIN 171

South Pork Payette River near Garden Valley, Idaho

Location. Lat 44°04', long 115"56' , in sec. 1, T. 8 H. , R. 4 E., on right bank at Garden 

Valley ranger station, 300 ft upstream from Station Creek, 2.7 miles southeast of 

Garden Valley, and 5.9 miles upstream from Middle Pork.

Drainage area. 779 sq mi.

Records available. May 1921 to September 1956. Monthly discharge only for some periods, 

published in W3P 1317.

Gage. Water-stage recorder. Altitude of gage is 3,090 ft (from river-profile map). 

Prior to Aug. 3, 1926, staff gage at datum 0.38 ft higher. Aug. 3, 1926, to Dec. 5, 

1933, staff gage at present datum.

Average discharge.--35 years (1921-56), 1,295 cfs (937,500 acre-ft per year).

Extremes. Maximum discharge during year, 9,980 cfs May 24 (gage height, 7.43 ft); minimum, 274 cfs Dec. 5, 6 (gage height, 1.54 ft).

1921-56: Maximum discharge observed, 10,600 cfs May 26, 1928 (gage height, 

8.0 ft); minimum, 75 cfs Dec. 15, 1935, Jan. 26, 1936 (gage height, 0.70 ft), from 

rating curve extended below 280 cfs; minimum daily, 136 cfs Dec. 10, 1944.

Remarks. Records excellent except those for periods of ice effect, which are good. Small 

diversions above station. Since Nov. 2, 1930, flow has been regulated by Deadwood Reservoir (see p. 169).

Rating , water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Mar. 11-20, July 19 to Sept. 13)

1.6 

1.8 

2.0 

2.5 

3.0

310

445

600

1,050

1,570

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

702

600

642

851

898

879

888

888

870

888

964

917

908

898

552

424

410

403

403

410

403

417

410

403

596

417

438

*417

410

498 

526

19,132

617

37,950

Nov.

452

403

424

445

498

452

424

410

410

£68

651

498

382

445

b550

b340

b440

5U5

560

1,150

1,060

860

685

634

576

576

634

6OO

568

552

16,512

550

32,750

Dec.

544

*520

498

482

542

460

520

452

490

468

475

544

592

b380

b400

b560

560

556

654

917

1,170

5,950

5,740

5,830

2,440

1,870

 1,590

1,340

1,120

984 

1 , 040

35,448

1,143

70,310

Jan.

984

917

851

833

824

762

736

713

660

676

668

634

651

654

728

879

788

728

702

694

676

668

694

651

55S

600

634

552

568

576 

b490

21,713

700

43,070

Feb.

b430

b470

b540

b600

b650

b580

b580

b55u

b540

568

568

568

*528

490

475

b400

b45o~

536

512

505

505

505

520

505

490

490

498

475

482

------

15,010

518

29,770

Mar.

482

520

52 b

528

512

475

452

544

520

490

44E

451 536"

490

482

498

544

617

*753

833

898

a64

1,220

1,620

2,000

1 , 910

1,610

1,360

1,260

1,280 

1,290

26,032

842

51,750

Apr.

1,250

1,170

1,150

1,140

1,210

1,190

1,230

1,190

1,230

1,560

1,930

2,520

2,710

5,300

3,690

3,940

3,770

3,870

4,260

4,660

5,130

5,450

5,470

5,130

4,880

*4,70o

4,600

4,450

4,120

3,360

34,740

3,158

187,900

Hay

3,690

3,700

3,700

3,960

4,100

4,120

5,910

3,610

3,650

3,840

3,760

3,460

3,140

2 , 940

2,960

3,330

5,940

4,920

6,110

6,990

7,650

8,500

8,600

9,490

9,220

*8,650

9,080

8 , 440

8,020

8 , 000 

8,570

173,650

5,602

344,400

June

8,790

8 , 460

8,180

8,140

7 , 700

6,890

6,410

6,890

6,850

6,990

7,400

7,260

6,940

6,690

6,480

5,950

5,150

*4,720

4 , 700

5,190

4,860

4,450

4,500

4,240

4,150

4,010

5,990

4,05O

4,100

5 , 7 3d

177,680

5,923

352,400

July

5,430

3,220

3,060

2,880

2,780

2,760

2,710

2,650

2 , 600

2,590

2,590

2,500

2,290

2,200

2 , 110

2,010

1.88C

1,820

1,770

1,750

1,750

1,690

1,590

1,570

*1,540

1,460

1,450

1,570

1,550

1,450 

1,420

66,200

2,155

131,500

Aug.

,570

,550

,430

,400

,400

,450

,460

,430

,340

,110

860

833

815

797

824

797

1,350

1,740

1,710

1,710

1,800

1,750

1,790

1,810

1,820

1,790

1,760

1,750

*1,700

1,690 

1 , 8oO

44,656

1,440

88,550

Sept.

2,270

2 , 600

2 , 590

2,570

2,520

1,120

2,520

2,520

2,490

2 , 470

2,460

2,400

2,200

2,150

1 , 910

1,870

1,880

1 , 880

1,930

1,920

1,920

1,880

1,850

1,850

1,770

1,650

1,550

1,310

1,180

544

59,754

1,992

118,500

Calendar year 1955; Max 5,740 Mln 270 Mean 1,206 Ac-ft 873,100

Water year 1955-56: Max 9,490 Mln 330 Mean 2,051 Ac-ft 1,489,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice
172 PAYETTE RIVER BASIN

South Fork Payette River near Banks, Idaho

Location. Lat 44°05'30", long 116°06'00", in see. 28, T1 9 N., R. 3 E., on right bank 

1 mile upstream from confluence with North Fork Pay«fc«e River and If miles northeast 

of banks.

Drainage area. 1,200 sq mi, approximately. 

Records available. August 1921 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 2,805 ft (from river-profile map). 

Prior to Sept. 12, 1922, staff gage at same site and datum.

Average discharge. 35 years, 1,747 cfs (1,265,000 aore-ft per year).

Extremes.--Maximum discharge during year, 13,400 cfs May 24 (gage height, 11.10 ft); minimum, 351 cfs Nov. 16 (gage height, 0.22 ft).

1921-56: Maximum discharge, 13,800 cfs May 17, 1927 (gage height, 10.6 ft, from 

floodmarks); minimum, 225 cfs Dec. 15, 1935, Jan. 26, 1936, Dec. 26, 1939.

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

good. Small diversions above station for irrigation. Flow regulated by Deadwood 

Reservoir (see p. 169).

Rating table, water year 1955-56 (gage height, in feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Apr. 14 to July 12)

0.4 

.6 

1.0 

2.0 

3.0 

4.0

420

510

720

1,370

2,130

3,030

5.0

6.0

8.0

10.0

11.2

4,070

5,250

7,900

11,000

12,900

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

792 

692 

692

905

970

970

964

970

964

976

1.110

1,030

1,020

1,000

750

565 

555

550

550

555

550

560

555

545

54O

565

605

565

560

638

732

22,995

742

45,610

Nov.

*616 

560 

575

616

687

626

585

565

570

714

918

682

515

575

470

420 

535

654

726

1,450

1.520

1,200

931

834

774

798

912

879

816

792

22,515

750

44,660

Dec.

798

*744 

687

665

488

575

732

632

660

660

648

726

834

520

456

816 

780

738

897

1,810

2,180

8,290

»10.700

7,040

4,350

3,280

2,850

2,370

a2,000

al , 700

al.800

61,426

1,981

121,800

Jan.

al,730 

al , 550 

al,450

al,400

al,350

al,300

al,200

al,150

al,150

al,100

1,100

1,060

1,100

1,070

1,360

1.890 

1,610

1,460

1,390

1,340

1,290

1,280

1,380

1,270

1,090

1,140

1,180

1,010

1,040

1,050

_^L

39,288

1,267

77,930

Feb.

704 

792 

924

1,040

1.150

1,040

970

912

860

879

905

938

*905

853

816

660 

726

853

822

816

810

846

892

853

828

822

810

792

798

24,996

862

49,580

Mar.

798 

886 

918

905

879

816

768

834

860

798

726

704

834

760

768

780 

853

1,010

»1 , 240

1,430

1,570

1,710

2,290

3,050

5.67Q

3,530

2,990

2,570

2,420

2,410

2,410

46,207

1,491

91,650

Apr.

2,300 

2,180 

2,130

2.120

2,240

2,190

2,220

2,140

2,240

2,710

3,350

4,260

4,630

5,370

6,030

6,720 

6,390

6,440

7,000

7,560

8,130

8.490

8,440

7,930

7,510

*7,260

7,170

7,000

6,400

5,940

154,490

5,150

306,400

May

5,620 

5,580 

5,550

5,850

6,090

6,060

5,900

5,740

5,710

5,960

5,970

5,450

4,940

4,620

4.600

5,050 

5,880

7,030

8,460

9,700

10,400

11,100

11,700

12.900

12,400

 11,600

12,200

11,400

10,800

10,600

'

245,760

7,928

487,500

June

11.500 

10,900 

10,300

10, 200

9,530

8,550

7,820

8,300

6,260

8,270

8,590

8,400

6,080

7,830

7,720

7,170 

6,310

5,760

5,670

6,060

5,750

5,300

5,100

5,020

*4,900

4,740

4,660

4,660

4,690

4.410

214,250

7,142

425,000

July

4.050 

5,780 

3,630

3,420

3,290

3,250

3,190

3,090

5,030

2,990

2,960

2,880

2,680

2,540

2,450

2,340 

2,180

2,110

2,050

2,030

1,990

1,940

1,840

1,780

1,750

*1,670

1,640

1,560

1.540

1,580

*

76,820

2,478

152,400

Aug.

1,540 

1,520 

1,570

1,570

1,560

1,600

1,620

1,590

1,530

1,350

1,050

1,010

985

957

976

957 

1,550

1,850

1,830

1,830

1,880

1,860

1,900

1,910

1,920

1,910

1,890

- 1,870

1,830

*1,800

1,870

48,863

1,576

96,920

Sept.

2,300 

2.660 

2,640

2,630

2,620

1,280

2,490

2,570

2,540

2,520

2,510

2,500

2,280

2,240

2,000

1,950 

1,960

1,950

2,000

2,000

1,990

1,980

1,920

1,910

1,860

1,720

1,670

1,400

1,380

752

62,202

2,075

125,400

Calendar year 1955: Max 10,700 Mln 375 Mean 1,595 Ac-ft 1,154,000

Water year 1955-56: Max 12,900 Mln 420 Mean 2,786 Ao-ft 2,023,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for station 

near Garden Valley, North Fork Payette River near Banks, and Payette River near Horseshoe Bend.
PAYETTE RIVER BASIN 173

Payette Lake at McCall, Idaho

Location.--Lat 44°55 T , long 116°07', in sec. 8, T. 18 N., R. 3 E., at outlet of lake on 

North Pork Payette River, at McCall.

Drainage area. 144 sq mi.

Records available.--August 1921 to September 1956 (fragmentary prior to Nov. 23, 1943J. 

Prior to October 1942, published as "at Lardo".

gage. Water-stage recorder. Datum of gage is 4,982.73 ft above mean sea level, unadr 

Justed. Prior to Aug. 26, 1931, staff gage at site 25 ft downstream at datum 2.0 ft 

higher. Aug. 26, 1931, to Nov. 22, 1943, staff gage at site 75 ft downstream at present datum.

Extremes. Maximum gage height during year, 7.05 ft June 28; minimum, 1.96 ft Nov. 17. 

1921-56: Maximum gage height observed, 8.75 ft July 13, 1935; minimum observed, 0.95 ft 

Oct. 3, 1931.

Remarks. Plow from Payette Lake is regulated within natural range by taintor gates .and 

removable stoplogs of a buttress and slab-type dam completed in November 1943. During 

period 1923 to 1943 lake was regulated by structure consisting of a series of concretefilled cribs supporting removable flashboards. Some regulation is reported to have 

been effected by timber flashboards for several years prior to 1923. Lake area is 

approximately 5,000 acres. No capacity table has been developed. Water is used for 

irrigation of lands in vicinity of Emmett. No diversion above station.

Cooperation. Water-stage recorder inspected by employees of U. S. Forest Service.

Revisions (water years).--WSP 753: 1931. WSP 1013: Drainage area.

Qage height, in feet, at 12 p.m., water

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

6.20

6.20

6.19

6.19

6.20

6.20

6.19

6.10

5.95

5.87

5.77

5.54

5.17

4.80

4.48

4.18

3.91

3.68

3.48

3.30

3.13

2.98

2.85

2.74

2.63

2.58

2.50

2.43

2.38

2.34

2.30

Nov.

2.27

2.23

2.18

2.20

2.17

2.14

2.12

2.08

2.09

2.11

2.10

2.09

2.08

2.06

2.00

1.98

1.97 Toz

 2.10

2.22

2.29

2.30

2.33

2.32

2.32

2.34

2.32

2.30

2.29

2.30

Dec.

2.30

2.27

2.25

2.21

2.22

2.22

2.20

2.20

2.19

2.17

2.18

2.18

2.15

2.13

2.12

2.13

2.12

2.14

2.23

2.27

2.40

2.78

3.18

3.33

3.38

3.42

3740

3.35

3.28

3.21

3.17

Jan.

3.13

3708"

3.03

2.97

2.92

2.88

2.83

2.80

2.75

2.72

2.68

2.64

2.63

2.64

2.71

2.68

2.64

2.62

2.60

2.58

2.56

2.56

2.55

2.53

2.49

2.47

2.45

2.43

2.42

2.39

2.37

Feb.

2.35

2733

2.31

2.29

2.27

2.25

2.24

2.23

2.21

2.20

2.21

2.20

2.19

2.18

2.17

2.16

2.15

2715

2.16

2.23

2.23

2.22

2.24

2.23

2.24

2.22

2.21

2.19

2.20

 

Mar.

2.21

2.21

2.20

2.19

2.18

2.16

2.15

2.14

2.14

2.12

2.11

2.09

2.11

2.09

2.07

2.07

2.05

2.04

2.04

2.05

2.04

2.05

2.06

2.07

2.10

2.15

2.17

2.17

2.18

2.19

2.23

Apr.

2.23

2.21

2.21

2.20

2.20

2.19

2.18

2.19

2.19

2.22

2.28

2.36

2.43

2.54

2.67

2.84

2.90

2.98

3.12

3.33

3.56

3.82

4.00

4.11

4.16

4.15

4.11

4.08

4.01

3.94

May

3.87

3.84

3755

.05

.15

.18

.22

.35

.47

.59

.58

.41

.24

.12

.09

.27

.61

5.06

5.56

5.98

6.33

6.59

6.73

6.85

6767

6.65

6.82

6.67

6.65

6.67

6.76

June

6.83

6.68

6.45

6.24

5.89

5.47

5.14

5.08

5.29

5.49

5.50

5.40

5.33

5.25

5.26

5.17

4.93

4.89

5.04

5.26

5.33

5.62

5.99

6.37

6.74

6.93

7.02

¥79"7

6.87

6.80

July

6.82

6.86

6.88

6.87

6.88

6.87

6.87

6.87

6.87

6.90

6.90

6.90

6.90

6.84

6.82

6.83

6.84

6.86

6.87

6.88

6.88

6.87

6.88

6.89

6.91

6.90

6.89

6.89

6.89

6.89

6.90

Aug.

6.90

6.89

6.88

6.88

6.87

6.86

6 85

6.84

6.83

6.82

6.81

6.80

6.79

6.78

6.77

6.76

6.75

6.74

6.72

6.71

6.68

6.68

6.66

6.66

6.66

6.71

6.72

6.72

6.71

6.70

6.69

Sept.

6.68

67§7

6.66

6.65

6.64

6.63

6.62

6.61

6.60

6.59

6.58

6.57

6.56

6.55

6.54

6.53

6.52

6.51

6.50

6.49

6.46

6.42

6.38

6.35

6.33

6.30

6.27

6.25

6.22

6.14

ear October 1955 to September 1956

Note. Qage heights Nov. 15-20, Feb. 1-6, Apr. 11, 12, July 23 to Aug. 14, Sept. 3-17 estimated 

from recorded range In stage and gage heights for North Fork Payette River at McCall.
174 PAYETTE RIVER BASIN

North Fork Payette River at McCall, Idaho

Location. Lat 44°54'30", long 116°07'30", In sec. 8, T. 18 N., R. 3 E., on left bank at 

McCall, a quarter of a mile downstream from outlet of Payette Lake.

Drainage area. 144 sq mi.

Records available.--September 1908 to June 1917, May 1919 to September 1956. Prior to 

October 1942, published as "at Lardo".

Gage. Water-stage recorder. Altitude of gage is 4,970 ft (by barometer). Prior to 

Oct. 14, 1908, staff gage at site 1 mile downstream at different datum. Oct. 14, 

1908, to Dec. 18, 1923, staff gages at sites near present gage at present datum.

Average discharge.--45 years (1908-16, 1919-56), 357 cfs (258,500 acre-ft per year).

Extremes. Maximum discharge during year, 3,550 cfs June 1 (gage height, 6.89 ft); minimum, 17 cfs Sept. 6-21; minimum gage height, 1.54 ft Sept. 14-18.

1908-17, 1919-56: Maximum discharge, 4,260 cfs June 10, 1933, June 4, 1948; maximum gage height, 7.71 ft June 4, 1948; practically no flow Nov. 5-8, 1931, Nov. 17-24, 

1933, Nov. 14-27, 1935, Oct. 22 to Nov. 11, 1938.

Remarks. Records excellent except those below 100 cfs, which are good. Flow partly 

regulated by gates at outlet of Payette Lake (see preceding page) and several smaller 

lakes upstream. No diversion above station.

Cooperation.--Water-stage recorder inspected by employees of U.S. Forest Service. 

Revisions. WSP 963: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Jan 31 Feb. 1 to Sept. 30

1.6

1.8

90

154

3.0 275

3.5 486

4.0 770

4.5 1,100

1.5 

1.7 

1.9 

2.2

2.5 122

3.0 262

3.5 470

4.0 755

4.5 1,110

5.0 1,530

6.0 2,520

7.0 3,680

Discharge, in cubic feet per second, water year October 19.55 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

E5

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

21

21

21

21

21

21

21

222

389

385

*380

634

974

953

866

800

714

637

564

506

452

402

359

328

294

275

251

229

213

198 

184

11,356

366

22,520

Nov.

176

162

152

149

147

140

132

126

119

126

126

124

119

117

108

101

95

101

113

135

162

176

181

181

181

184

184

178

176

173

4,344

145

8,620

Dec.

173

170

162

154

*149

154

152

147

149

142

142

142

140

132

128

126

126

126

142

158

179

248

377

455

485

496

*506

496

443

420

406

7,425

240

14,730

Jan.

393

380

359

343

332

316

305

294

282

272

261

251

248

241

251

258

251

241

235

229

222

222

222

219

210

201

196

190

184

181

175

7,962

257

15,790

Feb.

166

164

159

154

149

*146

144

142

137

135

135

137

133

131

129

129

126

126

126

133

142

137

142

142

144

142

140

137

137

------

4,064

140

8,060

Mar.

140

140

137

135

135

131

129

126

122

120

116

114

*114

112

111

107

105

103

101

101

100

103

103

107

111

120

126

131

133

133 

142

3,708

120

7,350

Apr.

142

142

140

137

TS7

137

137

137

137

142

*159

197

219

252

295

355

402

430

480

564

678

827

968

1,060

1,110

1.120

1,100

1,080

1,040

990

14,714

490

29,180

May

946

918

918

975

1,100

1,140

1,150

1,220

1,320

 1,410

1,480

1,400

1,260

1,150

1,100

1,150

1,350

1,660

2,080

2,550

2,890

3,220

3,370

5.500

3,420

3,310

3,430

3,370

*3,330

3,360

3,400

62,877

2,028

124,700

June

5,510

3,480

3,280

3,040

2,770

2,400

2,030

,850

,920

,140

,240

,190

,110

,050

,000

,980

,810

,390

,040

,120

1,090

366

70

82

96

462

807

1,210

1,260

953

50,746

1,692

100,700

July

536

4T8

495

 515

526

520

480

461

425

384

376

372

376

412

326

201

140

140

140

140

137

137

122

88

66

65

65

64

62

60 

44

8,323

268

16,510

Aug.

34

32

31

31

29

27

26

25

24

24

24

24

23

22

 22

22

22

22

22

21

21

21

20

20

20

21

20

20

20

20

19

729

235

1,450

Sept.

19

19

19

18

18

17

17

17

17

17

17

17

17

17

17

17

 17

17

17

17

41

68

68

67

67

67

67

67

67

182

1,109

370

2,200

Calendar year 1955: Max 2,780 Mln 21 Mean 307 Ac-ft 222,200

Water year 1955-56: Max 3,510 Mln 17 Mean 485 Ac-ft 351,800

Discharge measurement made on this day.
PAYETTE RIVER BASIN 175

Lake Fork Payette River above Jumbo Creek, near McCall, Idaho

Location.--Lat 44°55', long 115°59 T , in NEij sec. 8, T. 18 N., R. 4 E., on left bank 200 ft 

upstream from bridge at abandoned powerplant, a quarter of a mile upstream from Jumbo 

Creek, 3% miles upstream from Lake Fork Reservoir dam, and 5|- miles east of McCall.

Drainage area. 48.9 sq mi.

Records available. October 1945 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,140 ft (from topographic map). 

Prior to Nov. 10, 1945, staff gage at site 200 ft downstream at different datum.

Average discharge.--11 years, 152 cfs (110,000 acre-ft per year).

Extremes. Maximum discharge during year, 1,950 cfs May 24 (gage height, 8.21 ft); minimum, 12 cfs Sept. 20, 26, 27; minimum gage height, 2.06 ft Sept. 27.

1945-56: Maximum discharge, 2,600 cfs June 3, 1948 (gage height, 9.19 ft), from 

rating curve extended above 1,000 cfs by logarithmic plotting; minimum, 5.5 cfs Nov. 9, 

1952 (gage height, 1.62 ft).

Remarks. Records excellent except those for periods of ice effect or no gage height 

record, which are fair. Mo diversion above station.

Rating table, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used Dec. 22-28, Jan. 1-5, May 16 to

June 4, June 9, 10)

2.0 

2.3 

2.6 

3.0 

3.5 

4.0 

4.5

11

105

151

Discharge, in cubic feet per second, wate

5.0 216

5.5 306

6.0 422

6.5 595

7.0 850

8.0 1,630

October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

50

31

Total

Mean

Cfsm

In.

Ac -ft

Oct.

17

16

16

16

20

19

19

£0

20

25

42

30

32

*35

32

29

27

25

25

25

24

24

24

22

21

24

25

24

24

32

31

765

24.7

0.505

0.58

1,520

Nov.

27

26

28

39

45

34

30

30

29

82

63

47

b40

b50

ID 35

b30

b40

b70

b!30

171

146

*95

81

73

69

67

64

63

61

58

1,823

60.8

1.24

1.39

3,620

Dec.

57

54

52

b47

b40

b50

b48

b45

54

48

48

61

b50

b40

b54

b60

a57

a54

a74

alOO

174

683

468

246

181

156

143

*124

b!02

blOO

bl08

3,578

115

2.35

7,100

Jan.

112

96

89

91

84

80

76

75

70

72

6a

66

66

60

66

72

64

63

60

61

58

57

56

52

b45

b48

b52

b48

b50

b46

b40

2,043

65.9

1.35

1.55

4,050

Feb.

b42

b46

b48

48

46

44

*43

42

40

41

40

40

40

39

38

35

40

38

37

36

37

36

36

35

34

34

34

34

34

______

1,137

59.2

0.802

0.86

2,260

Mar.

*34

34

32

32

31

30

32

33

33

31

30

32

32

b29

b30

b30

31

32

33

34

34

40

45

58

76

81

69

64

64

62

62

1,290

41.6

0.851

0.98

2,560

Apr.

59

57

55

56

56

55

56

56

62

79

*114

144

169

216

275

296

244

269

363

442

538

582

549

501

478

401

591

386

342

516

7,607

254

5.19

5.79

15,090

May

300

310

329

401

422

382

386

498

475

*505

456

367

325

314

356

488

725

950

1,160

1,250

1,360

1 , 430

1,390

1.550

1,270

1,240

1,470

1,230

*1,300

1,390

1,370

25,379

819

16.7

19.50

50,340

June

1,550

1,140

985

896

715

561

495

662

896

943

808

730

730

695

762

604

472

491

557

582

462

436

417

436

419

412

444

466

399

3_2JL

19,286

643

13.1

14.67

58,250

July

280

262

239

218

*218

213

202

190

190

187

179

156

145

137

119

107

98

91

88

84

79

73

68

63

58

54

52

50

48

44

42.

4,O34

150

2.66

3.07

8,000

Aug.

40

38

57

34

33

32

37

35

32

31

29

28

27

*26

26

25

24

22

22

21

20

20

19

19

20

30

34

29

24

21

857

27.6

0.564

0.65

1,700

Sept.

20

18

18

18

17

17

16

16

16

15

14

15

15

14

14

13

13

*13

13

13

14

14

14

13

13

12

13

15

14

13

443

14.8

0.303

0.34

879

Calendar year 1955: Max 1,100 Win 10 Mean 121 Cfsm 2.47 In. 35.56 Ac-ft 87,530

Water year 1955-56: Max 1,530 Min 12 Mean 186 Cfsm 3.80 In. 51.90 Ac-ft 135,400

Peak dis (base. 850 cfs) .--Dec. 22 (4 p.m.) 1,030 cfs (7.26 ft); May 24 (1 a.n

(8.21 ft); June 9 (10 p.m.) 1,300 cfs (7.50 ft). 

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of weather records and records for statio 

low Lake Irrigation District Canal and Johnson Creek at Yellow Pine, 

b Stage-discharge relation affected by ice.
176 PAYETTE RIVER BASIN

Lake Fork Reservoir near McCall, Idaho

Location. Lat 44°54' , long 116°03', in NW^NW-5- sec. 13, T. 18 N., R. 3 E., on Lake Pork 

Payette River, 3 miles east of McCall.

Drainage area. 64 sq mi, approximately.

Records available. April 1926 to September 1956 (fragmentary).

Gage. Staff gage and graduations on concrete gate-control structure of dam; gage read 

once daily during irrigation season. Datum of gage is at mean sea level (levels by 

Lake Irrigation District).

Extremes. Maximum contents observed during year, 19,310 acre-ft June 28 (elevation, 

5,118.49 ft); practically no storage at times during fall and winter.

1926-56: Maximum contents observed, 19,740 acre-ft June 19, 1941 (elevation, 

5,1:18.75 ft); no storage above elevation 5,101.0 ft for long periods during fall and 

winter of most years.

Remarks. Reservoir is formed by earth- and rock-fill dam completed in 1926. Capacity, 

16,940 acre-ft between elevations 5,101.0 (lower limit of capacity table, 4.0 ft above 

gate sill of outlet) and 5,117.0 ft (top of flashboards, 5.0 ft above spillway crest). 

Dead storage unknown. Water is used for irrigation of about 6,800 acres near McCall 

and Norwood. Figures given herein represent contents above 5,101.0 ft. There is some 

usable storage below elevation 5,101.0 ft, but natural flow passing through reservoir 

when outlet gates are operating prevents withdrawal of storage to elevation of sill of 

gates. Elevation in reservoir reported below 5,101.0 ft as follows: Feb. 29, 

5,100.37 ft. Storage figures from elevations as observed.

Cooperation. Elevation record and capacity table furnished by Lake Irrigation District.

Capacity table (elevation, In feet, and contents, 

In acre-feet)

5,101.0 

5,102.0 

5,103.0 

5-, 104.0 

5,106.0 

5,108.0

0

481

969

1,500

2,810

4,550

5,110.0

5,112.0

5,114.0

5,116.0

5,119.0

6,770

9,380

12,320

15,390

20,140

Contents, In acre-feet, water year October 1955 to September 1956

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

M(*)

Oct.

-

-

-

_

-

-

-

-

182

-

-

-

-

_

-

-

-

-

_

-

-

-

-

.

-

-

-

-

_

-

Nov.

-

-

-

.

-

-

-

-

-

-

-

-

-

_

-

-

' -

-

274

-

-

-

-

_

-

-

-

_

-

Dec. Jan.

-

-

-

_

-

-

-

-

.

-

-

-

-

346

-

-

-

-

.

-

-

-

-

_

-

_

_

_

_

-

Feb. Mar. Apr.

-

-

-

_

-

-

-

-

_

-

589

-

-

1,500

-

-

-

-

_

-

-

-

-

_

7,730

_

.

'

_

-

May

8,570

-

-

_

9,930

-

-

11,120

11,520

-

11,570

-

-

11,420

11,840

-

13,540

14,620

15,540

16,320

16,690

16,940

17.140

16,920

17 , 100

17,100

17,100

17,070

17,030

5,117.06

+8,530

June

17,100 

17,100

16,660

16.630 

16,690

16,690

16,690

16,850

17,320

17,730

17,660

17,730

18,360

18,590

18,940

19, 100

18,910

18,970

19,140

19,270

19,100

18,970

19,010

19,020

19,140

19,170

19,230

19.510

19,300

19,140

5,118 . 38

+2,110

July

19.100 

19,090

19,040

18,990 

18,940

18,910

18,850

18,750

18,650

13,560

18,460

18,350

18,140

17,980

17,740

17,520

17,240

16,940

16,630

16,360

16,070

15,740

15,390

15,080

14,770

14,400

14,030

13,690

13,280

12 930

12', 560

5J.14.16

-6,580

Aug.

12.210 

11,850

11,540

11,160 

10,820

10,470

10,160

9,810

9,490

9,160

8,860

8,530

8,220

7,880

7,580

7,270

7,010

6,750

6,460

6,190

5,940

5,660

5,390

5,160

4,920

4,720

4,550

4,400

4,210

4,010

3,800

5,107.20

-8,760

Sept.

5.610 

3,410

-

-

_

-

-

-

-

-

-

-

-

-

_

1,600

-

-

-

_

-

-

-

-

_

-

-

_

_

-

t Elevation, In feet, at end of month. 

* Change In contents, In acre-feet.

a Contents estimated on basis of records for Lake Fork Payette River above Jumbo Creek and Lake 

Fork Payette River below Lake Irrigation District Canal.
PAYETTE RIVER BASIN 177

lake Irrigation District Canal near McCall, Idaho

Location. Eat 44°54', long 116 t> 03 1 , in SW£ sec. 13, T. 18 N., R. 3 E., on right bank 

600 ft downstream from head of canal, half a mile south of Lake Pork Reservoir, and 

3 miles southeast of McCall.

Records available. May 1926 to September 1956 (irrigation seasons only 1927-34, 1942, 

1946).

Gage. Staff gage read once daily. Altitude of gage is 5,090 ft (from topographic map), 

prior to May 1947, staff gage at same site at different datum.

Extremes. 1926-56: Maximum daily discharge, 205 cfs July 18, 1953; no flow or small 

amount of leakage through headgate during nonirrigation seasons.

Remarks.--Records good except those below 10 cfs, which are poor. No diversion between 

FieacTgate and station. Canal diverts from right bank of Lake Fork Payette River in 

SW£ sec. 13, T. 18 N., R. 3 E., for irrigation of 6,800 acres near McCall and Norwood, 

in the Lake Irrigation District project.

Cooperation. Gage readings furnished by Lake Irrigation District.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2120"

20

19

19

18

18

17

17

16

*15

6

1

T

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

225

7.3

446

NOV.

0"1

T

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

»*l

1

1

1

1

1

1

1

1

1

29

1.0

58

Dec.

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

31

1.0

61

Jan.

( )

o

0

0

Feb.

(*)

0

0

0

Mar.

0

0

0

Apr.

( )

0

0

0

May

0

O

0

0

0

0

0

0

0

0

«0

0

0

0

0

0

13

22

28

34

36

37

46

59

67

76

86

102

*108

113 

120

947

30.5

1,880

June

i£i T2TT

128

131

136

139

142

144

152

159

160

164

170

175

180

177

173

168

166

166

166

166

169

167

166

166

166

169

173

176

4,764

159

9,450

July

180

182

184

181

*178

179

179

180

180

180

182

182

179

178

175

174

171

164

162

160

160

160

160

157

156

156

153

153

149

147

141.

5,222

168

10,360

Aug.

137

137

135

135

135

133

132

130

129

127

127

127

127

126

*118

108

103

98

97

97

97

95

95

93

90

89

89

86

83

81

11

3,433

111

6,810

Sept.

76

75

76

72

69

69

69

66

65

47

17

6~0

0

0

0*1

*0

0

.0

0

0

0

0

0

0

0

0

0

0

703

23.4

1,390

Calendar year 1955; Max 191 Mln O Mean 40.0 Ac-ft 28,940

Water year 1955-56: Max 184 Mln 0 Mean 42.0 Ac-ft 30,460

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.

Note. No gage-height record Oct. 2-10, Oct. 12 to May 16, Sept. 12-30} discharge estimated on 

basis of 8 discharge measurements or field estimates, reported gate changes, records for Lake Pork 

Payette River below Lake Irrigation District Canal, and inflow-outflow study of Lake Pork Reservoir.
178 PAYETTE RIVER BASIN

Lake Fork Payette River below Lake Irrigation District Canal, near McCall, Idaho

Location.--Lat 44°54', long 116°03', in SWt;- sec. 13, T. 18 N., R. 3 E., on right bank 

300 ft downstream from diversion dam for Lake Irrigation District Canal, half a mile 

downstream from Lake Fork Reservoir, and 3 miles southeast of McCall.

Drainage area. 64 sq mi, approximately.

Records available. October 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,080 ft (from topographic map).

Average discharge. 16 years, 131 cfs (94,840 acre-ft per year).

Extremes. Maximum discharge during year, 1,430 cfs May 25 (gage height, 6.28 ft); minimum, 9.4 cfs Nov. 2 (gage height, 2.29 ft).

1940-56: Maximum discharge, 2,120 cfs June 3, 1948 (gage height, 7.09 ft), from 

rating curve extended above 1,200 cfs by logarithmic plotting; minimum, 0.4 cfs 

Mar. 27, 28, 1944; minimum gage height, 1.76 ft Mar. 28, 1944.

Remarks. Records excellent except those below 50 cfs, which are good. Plow regulated 

by Lake Fork Reservoir (see p. 176). Lake Irrigation District Canal diverts above 

station for irrigation of about 6,800 acres.

Revisions (water years). WSP 963: 1941.

Rating table, water year 1955-56, except periods of lee effect (gage 

height, In feet, and discharge, In cubic feet per second)

2.3

2.4 

2.6 

2.8 

3.0 

3.5

9.1

12

152

4.0 

4.5 

5.0 

5.5 

6.3

275

480

720

975

1,440

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

23

22

22

21

21

20

20

19

19

19

*21

29

34

35

35

35

35

35

35

34

34

34

34

33

32

32

32

32

32

32

31

892

28.8

1,770

Nov.

28

9.4

47

80

78

72

64

59

54

57

64

64

60

57

45

22

33

64

64

82

*100

110

110

106

103

100

96

93

90

87

2,098.4

69.9

4,160

Dec.

85

80

78

73

70

68

67

66

66

63

61

61

63

59

57

57

59

59

63

71

90

136

205

218

220

221

220

216

210

198

191

3,451

111

6,840

Jan.

184

178

171

162

156

150

142

135

128

122

117

113

110

105

103

*103

101

98

95

93

92

88

85

84

b80

b76

73

b70

68

b67

b66

3,415

110

6,770

Feb.

b65

b64

63

60

59

b58

56

b55

b54

54

53

49

48

48

b48

b47

b47

47

46

47

46

43

43

b43

b42

b42

b41

40

*41

1,449

50.0

2,870

Mar.

40

41

40

40

b40

b39

b38

38

b38

b37

b37

b37

37

b37

b36

b35

34

b34

b35

35

36

37

39

43

53

61

67

70

72

73

74

1,373

44.3

2,720

Apr.

74

74

73

72

72

72

72

72

72

74

79

84

*103

126

148

158

154

160

169

182

198

206

220

225

230

232

238

242

245

245

4,371

146

8,670

May

248

254

257

260

260

263

272

292

322

342

*374

590

386

374

370

378

412

512

640

815

942

1,120

1,240

1,390

1,370

1,280

1,250

1,280

*1,330

1,310

1,290

21,223

685

42,100

June

1,510

1,210

1,010

810

635

448

352

374

530

760

700

380

332

405

425

580

330

260

5O6

430

382

263

235

225

220

215

222

260

266

181

14,056

469

27,880

July

113

100

88

80

*73

67

68

70

68

64

61

70

68

64

63

67

76

80

74

79

78

74

72

59

70

84

84

84

78

74

68

2,318

74.8

4, 6OO

Aug.

67

67

66

66

63

63

63

63

63

61

60

57

57

57

*54

56

56

56

54

51

52

53

53

52

51

51

52

54

49

48

51

1,766

57.0

3,500

Sept.

51

49

49

51

51

46

39

31

25

23

22

23

23

23

22

22

21

*21

21

21

21

21

21

21

21

21

21

21

21

21

844

28.1

1,670

Calendar year 1955: Max 1,070 Mln 2.3 Mean 93. o Ac-ft 67,300

Water year 1955-56: Max 1,390 Mln 9.4 Mean 156 Ac-ft 113,600

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
PAYETTE RIVER BASIN 179 

Cascade Reservoir at Cascade, Idaho

Location. Lat 44°31'30", long 116 t> 03'05", in NE^NE^ sec. 26, T. 14 N. , R. 3 E., just 

upstream from left abutment of dam on North Fork Payette River, half a mile downstream 

from Willow Creek and three-quarters of a mile northwest of Cascade.

Drainage area. 620 sq mi.

Records available. January to December 1948 (fragmentary), January 1949 to September 

1956.

Gage. Staff gage read once daily. Datum of gage is at mean sea level (preliminary, unadjusted levels of U. S. Coast and Geodetic Survey).

Extremes. Maximum contents observed during year, 565,400 acre-ft June 28-30, July 1, 6,7 

(elevation, 4,822.50 ft); minimum, 160,000 acre-ft Oct. 14 (elevation, 4,799.58 ft).

1948-56: Maximum contents observed, that of June 28-30, July 1, 6, 7, 1956; no contents at times during March and September 1948.

Remarks. Reservoir is formed by earth-fill dam completed in May 1949. Storage began 

Nov. 7, 1947. Capacity, 703,200 acre-ft between elevations 4,766 (4.0 ft above sill 

of outlet tunnel) and 4,828 ft (top of spillway gates). Figures herein show contents 

above elevation 4,766 ft. The Bureau of Reclamation plans to limit withdrawal to 

elevation 4,787.5 ft, retaining 50,000 acre-ft capacity as dead storage. Contents 

table computed from tables furnished by Bureau of Reclamation (revised 1950). Water 

is used for irrigation of lands in the Payette Division of the Boise project and for 

power at Black Canyon powerplant neap Emmett.

Cooperation. Gage readings and capacity table furnished by Bureau of Reclamation.

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

4,798.0

4,800.0

4,802.0

4,804.0

4,808.0

140,900

165,200

191,000

218,900

280,100

4,812.0

4,816.0

4,820.0

4,824.0

348,600

424,600

508,500

601,400

Contents, in acre-feet, water year October 1955 to Septembe

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

181,800

179,000

176,300

173,900

171,500

170,200

168,700

166,400

164,600

162,700

162,100

161,300

160,200

160,000

161,200

162,200

163,100

163,700

163,700

165,000

165,200

165,000

164,700

164,400

164,200

164,000

163,700

163,400

163,200

163,000

163,000

4,799.82

-19,400

Nov.

163,100

163, 10U

163,000

163,100

163,300

163,400

163,700

164,100

164,400

164,800

165,200

165,600

165,800

166,100

166,200

166,200

166,400

166,700

169,600

173,400

176,600

177,900

178,400

178,800

181,100

183,100

184,400

185,700

186,600

187,700

4,801.78

+25,100

Dec.

188,700

189,700

189,900

190,200

190,500

191,000

191 , 300

191,300

191,500

191,800

192,300

193,700

194,300

195,000

195,700

196,400

196,400

196,100

196,100

197,700

203,200

218,900

232,000

236,500

241,000

244,000

248,600

253,200

255,500

257,000

257,800

4,H06.63

+70,200

Jan.

259,400

261,700

264,100

266,400

268,800

269,600

271,200

272,800

274,400

275,200

276,800

278,400

280,100

281,700

285,000

286,600

289,100

290,700

292,400

294,000

295,700

296,600

298,200

299,900

300,700

301,600

302,100

302 , 100

302', 400

302,800

30£ , 800

4,809.39

+44,800

Feb.

303,600

304,300

305,300

305,600

306,300

307,000

307,700

308,500

309,000

309,600

309,700

310,100

310,600

311,100

311,600

311,800

312,000

312,100

312,300

312,600

313,000

313,500

314,000

314,500

315,000

315,600

315,900

315,900

315,900

_______

4,810.13

+12,600

Mar.

315,400

314,900

314,400

313,800

313,200

312,500

311,800

310,200

308,500

306,300

303,800

301,100

298,600

296,000

293, SOU

290,100

287,100

284,100

280,900

277,500

274,400

272,800

273,600

271,500

269,900

268,700

267,500

266,000

263,900

262,300

260,800

4,806.77

-55,200

Apr.

259,700

258,100

256,700

255,300

253,800

252,200

250,700

249,200

247,600

247,600

247,300

247,600

247,600

248,400

248,400

249,900

253,000

255,300

255,000

255,600

255,300

255,800

256,600

258,400

259,400

260,800

262,800

262,800

262, HOO

262,800

4,806.92

+2 , 300

May

262,800

262,300

262,300

261^900

263,100

263,900

264,700

265,500

266,300

267,100

270,200

271,400

272,600

273,000

273,600

273,600

274,600

275,500

281,500

290,600

301,400

312,500

325,600

339,700

354,900

368,600

387,500

402,900

418,700

432,600

446,800

4,817.62

+194,700

June

461,200

476,000

488,900

501,900

510,700

517,400

518,500

51 7 , 400

516,300

515,600

515,600

520,000

523,000

527,500

533,600

542,200

548,000

552,100

556,500

560,700

561,700

56 1, 900

561,900

561,200

561,400

562,600

563,800

565,400

565,400

565,400

4,822.50

+107330

July

565,400

564,500

563,300

563,800

564,900

565,400

565,400

564,700

564,700

564,700

564,700

564,900

564,500

564,000

563,500

562,600

561,000

559,100

556,800

554,500

551,900

549,600

546,600

543,900

540,600

537,700

534,300

530,900

527,500

524,800

521,200

4,820.44

-47,100

Aug.

517,400

513,600

509,800

506,100

502,300

498,600

494,700

491,200

487,100

482,800

478,500

473,900

468,800

464,100

459,100

454,200

450,100

446,800

443,600

440,300

437,100

433,900

430,600

427,400

424,500

422,500

420,300

417,700

414,700

411,800

408,800

4,815.12

-111,000

Sept.

406,700

405,700

404,900

404,100

403,100

399,200

397,700

396,700

395,900

395,000

394,000

392,800

391,300

389,800

387,900

385,900

384,200

383,100

381,800

379,900

378,000

376,100

374,200

372,500

371,000

369,600

368,100

366,200

363,800

360,300

4312.48

-50,100
180 PAYETTE RIVER BASIN

North Fork Payette River at Cascade, Idaho

Location. Lat 44°31' , long 116°02' , In NEi;- sec. 36 T. 14 N. , R. 3 E. , on right bank at 

Cascade, 285 ft downstream from Boise Payette Lumber Company (formerly Halleck and 

Howard) mllldam, half a mile upstream from Beaver Creek, and l£ miles downstream from 

Cascade Dam.

Drainage area.--626 sq ml.

Records available .--May 1941 to September- 1956.

Gage. Water-stage recorder. Altitude of gage Is 4,730 ft (from topographic map of 

Bureau of Reclamation). Prior to Jan. 28, 1947, staff gages at present or nearby 

sites at present datum.

Average discharge. 15 years, 1,029 cfs (745,000 acre-ft per year).

Extremes. Maximum discharge during year, 4,990 cfs June 8 (gage height, 4.48 ft); minimum, 23 cfs June 2 (gage height, 0.23 ft).

1941-56: Maximum discharge recorded, 7,320 cfs May 10, 1947 (gage height, 6.29 ft); 

minimum, 2 cfs or less In January 1948 when stage was below Intake.

Remarks. Records excellent except those between 1,000 to 2,500 cfs, which are good. Flow 

regulated by Cascade Reservoir (see preceding page), Payette Lake (see p. 173), Lake 

Fork Reservoir (see p. 176), and occasionally by mllldam at Cascade. Diversions above 

station for Irrigation of about 37,000 acres.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic Feet per second) 

(Shifting-control method used Apr. 14 to May 18, June 4-13, July 16-25)

Oct. 1 to Mar. 22 Mar. 23 to Sept. 30

0.8 172

1.0 264

1.3 436

1.6 660

2.0 

2.5 

3.0

1,040

1,720

2,640

0.8 

1.0 

1.3 

1.6 

2.0

154

237

409

653

1,110

2.5 1,910

3.0 2,780

4.0 4,060

5.0 5,440

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1.420 

1,420

1,310

1,210

1,230

1,230

1,230 

1,230

1,220

1,220

1,200

*1,170

1,140

879 

635

635

627

687

714 

750

750

750

750

750

750

714

669

652

652

652

506

28,752

927

57,030

Nov.

417 

424

490

519

424

424

380 

278

220

194

T55" 189

189

202 

286

194

189

194

206 

202

198

*189

194

194

194

198

198

198

198

198

7,769

259

15,410

Dec.

206 

198

198

198

198

331

411 

311

198

198

198

202

202

198 

198

539

1,170

1,170

 1,190 6TB"

246

374

241

178

172

172

202

*225

220

259

411

10,830

349

21,480

Jan.

417 

417

315

215 2l5~

220

215 

215

220

220

220

220

220

220 

235

249

235

235

230 

230

225

230

230

225

225

322

477

484

484

484

435

8,784

283

17,420

Feb.

220 

211

206

m

211

*211

211 

211

230

230

230

230

230

312 

417

511

603

603

603

511

430

430

430

430

430

430

526

759

1,010

11,277

389

22,370

Mar.

1,040 

1,040

1,040

1,040

1,040

1,040

1,040 

1,170

1,400

1,480

1,480

1,480

*1,480

1,480 

1,640

1,890

1,930

1,930

1,930 

1,960

1,980

823

785

2,000

2.020

2,000

1,990

1,970

1,970

1,970

1,970

48,008

1,549

95,220

Apr.

1,950 

1,950

1,970

1,990

1,990

2,020

2,020 

2,020

2,060

2,060

2,430

2,580

*2,580

1.520 

2,590

2,180

1,840

2,390

2,720 

2,720

2,710

2,710

2,560

2.260

2,530

2,710

2,720

2,710

2,710

2.720

69,920

2,331

138,700

May

2,720 

2,720

2,720

2,740

2,740

2,720

2,720 

2,720

2,720

2,720

2,720

2,720

*2,720

2,740 

2,720

2,720

2,740

1,410

176 

189

224

219

219

224

228

242

252

233

237

247

*237

50,657

1,634

100,500

June

233

2"9TT

237

922

2,530

3,490

4,550 

4,350

4,120

4,120

3,180

2,350

1,930

1,100 

1,080

1,080

1,O8O

1,040

1,010 

1,500

1,820

1,840

1,480

967

600

482

482

1,170

1,780

2,000

52,619

1,754

104,400

July

2,000 

1,380

610

*446

590

827

943 

773

635

644

572

506

673

783 

837

1,040

1,110

1,210

1,320 

1,320

1,320

1,420

1,540

1,580

1,710

1,840

1,770

1,800

1,820

1,800

1,890

36,709

1,184

72,810

Aug.

1,950 

1,910

1,890

1,870

1,870

1,870

1,870 

2,000

2,390

2,510

2,480

2,540

*2,580

2,560 

2,560

2,340

1,860

1,710

1,700 

1,700

1,700

1,680

1,680

1,660

1,640

1,660

1,660

1,890

1,700

1,580

1,510

60,320

1,946

119,600

Sept.

746 

475

446

547

1,140

1,450

522 

539

490

482

608

712

816

907 

943

931

931

919

919 

*907

931

943

943

931

943

943

1,280

1,450

1,770

2,100

27,664

922

54,870

Calendar year 1955: Max 2,640 Min 158 Mean 732 Ac-ft 530,100

Water year 1955-56: Max 4,350 Mln 172 Mean 1,129 Ac-ft 819,800

* Discharge measurement made on this day.
PAYETTE RIVER BASIN 181

North Fork Payette River near Banks, Idaho

Location. Lat 44°07', long 116°06', in SEij sec. 16, T. 9 N., R. 3 E. , on right bank 

40 ft downstream from highway bridge, 2^ miles north of Banks, and 3 miles upstream 

from confluence with South Fork.

Drainage area. 933 sq mi.

Records available.--April 1947 to September 1956.

Gage. Water-stage recorder. Datum of gage is 3,081.13 ft above mean sea level, unadjusted .

Average discharge. 9 years, 1,370 cfs (991,800 acre-ft per year).

Extremes.--Maximum discharge during year, 5,480 cfs June 8 (gage height, 11.20 ft); minimum, 147 cfs Nov. 15 (gage height, 3.73 ft).

1947-56: Maximum discharge, 8,830 cfs May 11, 1947 (gage height, about 13.5 ft), 

estimated on basis of records for station near Smiths Ferry; minimum recorded, 36 cfs 

Dec. 31, 1947 (gage height, 3.01 ft).

Remarks.--Records excellent except those for periods of ice effect or no gage-height

record, which are good. Flow regulated by Payette Lake (see p. 173), Lake Fork Reservoir (see p. 176), Cascade Reservoir (see p. 179), and occasionally by milldam at Cascade. Many diversions from tributaries above station for irrigation.

Rating tables, water year 1955-56, except periods of ice effect (gage 

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

Oct. 1 to Jan. 31 Feb. 1 to Sept. 3O

3.9

4.1 

4.4 

4.8 

5.3

173

216

294

416

596

6.0 

7.0 

8.0 

9.0 

10.0

915

1,460

2,120

2,960

4,000

4.6

5.0 

5.5 

6.0 

7.0

379

513

710

940

1,510

8.0

9.0

10.0

11.2

2,200

3,030

4,020

5,480

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,540 

1,490

1,480

1,320

1,330

1,320

1,310

1,310

1,310

1,330

1,340

1,280

1,270

1,220

805

703

687

TIT

745 

800

810

810

805

805

805

825

745

715

703

745

720

31,789

1,025

63.O5O

Nov.

*536 

478

482

608

585

499

489

426

347

359

335

263

238

238

b!75

b290

286

277

294 

554

631

478

368

326

350

347

390

394

368

'- 356

11,767

392

23,340

Dec.

347 

*335

314

308

261

228

419

489

372

323

332

372

378

314

280

350

875

1,360

1,400 

1,540

/ 1,070

5,400

3,050

*1,650

1,190

945

1,000

840

612

581

643

25,578

825

50,730

Jan.

755 

750

711

585

536

517

499

496

430

478

482

454

460

447,

544

y%6

889

735

659 

619

588

569

577

543

450

485

604

655

707

707

635

18,502

597

36,700

Feb.

b510 

434

444

454

464,

447

/428

408

b390

 blTTo

441

441

441

*421

496

b450

694

839

794 

753

685

639

660

631

584

639

619

776

980

16,382

565

32,490

Mar.

1,220 

1,220

1,240

1,220

' 1,200

1,220

1,170

1,220

1,450

1,680

1,680

1,670

1,680

1,660

1,680

1,960

2,100

2,120

2,130 

*2,130

a2,200

a2,000

a600

al.SUO"

a2,800

a2,900

a2,7OO

a2,600

2,580

2,680

2,700

57,310

1,849

113,700

Apr.

2,620 

2.520

2,530

2,600

2,700

2,620

2,690

2,650

2,800

2,990

3,180

3,830

3,840

3,150

3,610

4,040

3,160

3,100

3,870 

3,960

4,050

4,090

4,110

3,690

3,590

*3,87O

4.OOO

3,880

3,770

3,670

101,180

3,373

200,700

May

3,600 

3,580

3,580

3,710

3,800

3,690

3,700

3,820

3,750

3,770

5,950

3,790

3,640

3,590

3,600

3,630

3,720

3,650

1,960 

1,960

2,050

2,070

2,110

2,170

£,120

2,170

2,600

2,230

2,060

2,050

*1,960

94,080

3,035

186, 6OO

June

1,890 

1,840

1,630

1,540

2,900

3,750

4,550

5.310

4,93o

4,810

4,650

2,950

2,800

1,980

1,950

2,060

1,830

1,710

1,610 

1,750

2,480

2,470

2,410

2,020

*1,470

945

916

980

1,910

2,290

74,331

2,478

147,400

July

2,500 

2,190

1,420

803

766

1,020

1,220

1,200

925

882

865

744

744

985

1,OOO

1,120

1,540

1,350

1,510 

1,530

1,530

1,530

1,690

1,690

*1,780

1,910

1,910

1,910

1,960

1,940

1,940

43,702

1,410

86,680

Aug.

2,050 

2,050

2,040

2,020

2,020

2,010

2.OOO

2,000

2,280

2,500

2,540

2,540

2.660

2,620

2,590

2,580

2,130

1,750

1,720 

1,700

1,710

1,700

1,680

1,680

1,660

1,660

1,640

1.770

1,810

*1,620

I, 550

62,280

2,009

125,500

Sept.

1,160 

714

561

554

648

1,860

820

693

627

580

627

756

S53

901

1,020

1,020

1,000

995

985 

980

970

995

1,000

995

1,000

1,000

1,020

1,500

1,500

2,070

29,414

980

58,340

Calendar year 1955: Max 3,400 Mln 175 Mean 960 Ac-ft 695,300

Water year 1955-56: Max 5,31O Min 175 Mean 1,547 Ac-ft 1,123,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage, weather records, 

and records for station at Cascade and Payette River near Horseshoe Bend, 

b Stage-discharge relation affected by ice.
182 PAYETTE RIVER BASIN

Payette River near Horseshoe Bend, Idaho

Location. Lat 43°56'30", long 116°12'00", in SE£ sec. 15, T. 7 N. , R. 2 E., on left bank 

300 ft upstream from bridge on State Highway 15, half a mile downstream from Porter 

Creek, and 2 miles north of Horseshoe Bend.

Drainage area. 2,230 sq mi, approximately.

Records available. February 1906 to September 1916, July 1919 to September 1956. 

Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 2,625.61 ft above mean sea level, unadjusted, prior to Nov. 23, 191£, staff gage at site if miles upstream at different 

datum. Nov. 23, 1912, to Apr. 16, 1953, water-stage recorder at site 1,000 ft downstream at datum 2.1 ft lower.

Average discharge.--47 years (1906-16, 1919-56), 3,195 cfs (2,313,000 acre-ft per year).

Extremes. Maximum discharge during year, 19,200 cfs Dec. 23 (gage height, 14.05 ft); 

minimum daily, 680 cfs Nov. 16.

1906-16, 1919-56: Maximum discharge, 22,100 cfs June 9, 1921 (gage height, 

9.57 ft, site and datum then in use); minimum, 350 cfs Dec. 17, 1935 (gage height, 

0.26 ft, site and datum then in use), from rating curve extended below 600 cfs.

Remarks.--Records excellent except those for periods of ice effect, which are good. Plow 

regulated by Deadwood Reservoir (see p. 169), Payette Lake (see p. 173), Lake Pork 

Reservoir (see p. 176) and Cascade Reservoir (see p. 179). Diversions from tributaries 

above station for irrigation of about 50,000 acres.

Cooperation. Water-stage recorder inspected by employees of Idaho power Company. 

Revisions. WSP 533: Drainage area.

Rating tables, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used Dec. 22-24, Aug. 26 to Sept. 2)

2.4 

3.0 

4.0 

5.0 

6.0

Oct. 1 to Feb. 15 

7.0

Feb. 16 to Sept. 30

860

1,330

1,950

2,800

10.0

13.0

3,910

5,230

8,770

16,900

8.0

10.0

12.0

12.6

5,230

8,740

13,600

15,200

Note. Same as preceding 

table below 8.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac- ft

Oct.

2,360

2,210

2,190 

2,230

2,300

2,300

2,270

2,270

2,270

2,290

2,460

2,320

2,280

2,240

1,690

1,280 

1,250

1,240

1,290

1,360

1,370

1,380

1,380

1,380

1,350

1,400

1,400

1,310 

1,280

1,370

1,530

55,250

1,782

109,600

Nov.

*1,210

1,050

1,040 

1,200

1,300

1,140

1,080

1,000

936

1,000

1,300

1,000

804

839

754

*680 

850

1,000

1,100

2,120

2,280

1,790

1,380

1,220

1,180

1,180

1,370

*1,350 

1,240

1,200

35,593

1,186

70,600

Dec.

1,210

1,140

1,030 

1,020

850

808

1,140

1,200

1,080

1,020

1,000

1,100

1,280

928

751

1,130 

1,560

2,290

2,300

3,480

3,350

11,400

*15,600

9, 670

6,040

4,620

4,190

3,530 

2,800

2,470

2,550

92,537

2,985

183,500

Jan.

2,630

2,430

2,250 

2,090

*2,000

1,900

1,800

1,780

1,610

1,640

1,670

1,580

1,620

1,590

2,140

5,110 

2,760

2,370

2,210

2,110

2,030

2,030

2,190

2,000

1,710

1,750

1,920

1,840 

1,860

1,900

1,600

62,120

2,004

123,200

Feb.

*1,400

1,400

1,400 

1,600

1,700

1,600

1,500

1,400

1,350

1,400

1,450

1,500

1,500

1,450

*1,400

1,250 

1,500

1,700

1,700

1,650

1,600

1,600

1,600

1,590

1,530

1,540

1,520

1,630 

1,820

44,280

1,527

87,830

Mar.

2,080

2,190

2,270 

2,230

2,180

2,110

2,020

2 08O

2^350

2,520

2,450

*2,400

2,550

2,470

2,460

2,740 

3,030

3,210

3,480

3,720

3,890

4,020

3,230

5,230

6,740

6,950

6,240

5,690 

*5,430

5,430

5,430

108,820

3,510

215,800

Apr.

5,240

5,010

4,960 

5,020

5,240

5,150

5,230

5,100

5,310

5,960

6,880

8,610

8,930

9,080

9,880

11,300 

9,910

9,720

11,200

*12,000

12,700

15,500

13,200

12,100

11,400

11,400

11,400

11,100 

10,400

9,760

266,490

8,883

528,600

May

9,380

9,310

9,250 

9,690

10,200

10,OOO

9,880

9,760

9,670

10,000

10,300

9,580

8,870

8,420

8,380

8,820 

9,740

11,000

10,700

11,900

12,700

13,400

14,000

15,200

15,000

*14,000

14,900

13,900 

13,000

12,700

13,000

346,650

11,180

687,600

June

13,400

13,000

12,200 

12,000

12,600

12,500

12,600

14,000

13,700

13,600

13,900

11,900

11,300

10,200

10,000

9,690 

8,490

7,690

7,450

8,070

8,64O

8,110

7,770

7,220

*6,570

5,920

5,780

5,750 

6,660

6,810

297,520

9,917

590,100

July

6,460

6,140

5,290 

4,450

4,220

4,380

4,540

4,490

4,150

4,030

3,980

3,800

3,530

3,630

3,550

3,510 

3,590

3,520

3,600

3,600

3,560

3,510

3,550

3,510

3,550

*3,610

3,610

5,500 

3,530

5,540

5,550

125,480

3,983

244,900

Aug.

3,630

3,600

3,630 

3,650

3,590

3,650

3,660

3,610

3,830

5,870

3,650

a3,600

a3,700

a3,650

a3,600

a3,600 

a3,550

3,670

3,630

3,590

3,660

3,600

3,620

3,630

3,630

3,630

3,570

3,680 

3,690

*3,480

5,440

112,590

3,632

223,300

Sept.

3,540

3,530

3,330 

3,320

3,370

3,160

3,430

3,360

3,290

3,220

3,220

3,330

3,230

3,220

3,090

2,980 

3,000

2,980

3,010

3,000

2,990

3,000

2,940

2,930

2,900

2,740

2,750

2,870 

2,910

2,760

93,380

3,113

185,200

Calendar year 1955: Max 15,600 Mln 680 Mean 2,634 Ao-ft 1,907,000

Water year 1955-56: Max 15,600 Mln 680 Mean 4,477 Ao-ft 3,250,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for South 

Fork Payette River and North Fork Payette River near Banks.

Note.--Stage-discharge relation affected by ice Nov. 16-19, Feb. 1-23.
PAYETTE RIVER BASIN 183

Payette River near Eramett, Idaho

Location.--Lat 43°56' , long 116°27' , in sec. 22, T. 7 N., R. 1 W., on right bank threeeighths of a mile downstream from Black Canyon Dam and 5 miles northeast of Emmett.

Drainage area.--2.680 sq mi, approximately.

Records available.--June 1925 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,400 ft (from topographic map).

Average discharge.--31 years, 2,991 cfs (2,165,000 acre-ft per year).

Extremes.--Maximum discharge during year, 22,700 cfs Dec. 22 (gage height, 12.98 ft); 

minimum, 4 cfs Nov. 25-29 (gage height, -1.40 ft) , when gates in dam were closed; minimum daily, 4 cfs, Nov. 26-28.

1925-56: Maximum discharge, 22,800 cfs May 1, 1938 (gage height, 12.90 ft); minimum daily, 3 cfs Jan. 10-14, Feb. 2, 22-25, 1938, when gates in dam were closed.

Remarks. Records excellent except those below 100 cfs, which are fair. Diversions above 

station for irrigation of about 135,000 acres. Flow regulated by diversion at and 

operation of gates in Black Canyon Dam and by Cascade Reservoir (see p. 179), Deadwood 

Reservoir (see p. 169), Payette Lake (see p. 173), and Lake Fork Reservoir (see 

p. 176).

Cooperation. Gage-height record collected in cooperation with Bureau of Reclamation. 

Revisions (water years) . WSP 1153: 1946(m), 1948(m).

Rating tables, waber year 1955-56 (gage height, in feet, 

in cubic feet per second)

nd discharge,

Oct. 1 to Mar

95

175

310

550

2.5

3.0

5.0

7.0

10.0

13.0

20

980

1,540

4,150

7,5OO 

14,250 

22,800

Mar. 21 to Sept. 30

3,0 1,540

4.O 2,77O

5.0 4,150

6.0 5,800

7.0 7,710

9.0 12,100

11.0 17,200

Discharge, In cubic feet per second, water year October 1955 to September 1956

Bay

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,880

1,850

1,660

1,740

1,760

1,800

1,800

1,840

1,770

1,680

1,820

1,860

1,800

1,880

1,840

1,660 

1,590

*1,590

1,590

1,550

1,610

1,550

1,600

1,560

1,560

1,610

1,670

1,610

1,610

1,640

1,920

52,900

1,706

104,900

Nov.

1,650

1,530

1,280

1 , 390

1,640

1,490

1,380

1,390

1,260

1,240

1,610

1,460

1,320

1,440

1,420

920 

940

1,270

1,800

2,070

2,130

2,180

2,150

2,070

*725

a4

aT

4

a67

1,190

39,024

1,301

77,400

Dec.

1,710

1,700

1,640

1,530

1,380

1,200

1,450

1,520

1,420

1,460

1,330

1,280

1,650

1,530

1,060

1.010 

1,120

1,400

1,550

*2,560

4,010

*12,800

*20,600

12,600

7,560

5,560

5,250

4,300

3,380

2,840

2 , 850

111,250

3,589

220,700

Jan.

3,100

2,930

2,650

2,520

2,390

2,270

2,130

2,130

1,940

1,880

1,900

1,850

1,910

1,970

3,430

5.140 

4,020

3,330

3,060

2,870

2,700

2,850

3,890

2,960

2,380

2,260

2,390

2,180

2,180

2,220

1,910

81,320

2,623

161,300

Feb.

1,820

*1,830

1,740

1,670

1,920

2,040

1,910

1,790

1,640

1,600

1,840

1,960

1,940

1,780

1,640

1,450

1,310

1,730

2,020

1,950

1,940

1,940

1,680

1,710

1,790

1,860

1,850

1,890

2,080

52,320

1,804

103,800

Mar.

2.420

2,690

2,940

2,860

2,770

2,580

2,420

2,460

2,700

2,860

2,810

*2,770

2,930

2,870

2,800

3,030 

3,330

3,620

4,000

4,C70

4,470

4,670

4,200

6,020

7,990

8,280

7,330

6,580

*6,120

6,120

6,120

127,050

4,098

252,000

Apr.

5,910

5,510

5,390

5,410

5,370

5,200

5,270

5,100

5,120

5,850

6,810

8,470

8,870

9,340

9,560

11,300 

10,300

9,600

11,000

*11,600

12,100

12,600

12,800

11,800

11,000

10,900

11,000

10,700

9,840

11,400

265,120

8,837

525,900

May

8,590

8,450

8,340

8,820

9,620

9,310

9,340

9,360

9,230

9,510

10,100

9,510

8,640

8,070

7,870

8,130 

8,970

*10,300

10,200

1 1 , 400

12,200

13,000

13,500

14,500

*14,700

13,400

14,500

13,700

12,800

12,400

12,700

331,160

10,680

656,800

June

13,200

12,800

11,900

11,500

12,000

12,000

11,800

13,100

13,200

12,800

13,100

11,300

10,300

9,290

8,870

,990 

,470

,580

,290

* ,710

,370

,790

,410

,960

,250

,480

,240

,200

" ,930

,250

268,080

8,936

531,700

July

4,900

4,610

3,750

,860

,550

,680

,820

,810

,480

,310

* ,260

,150

1,850

1,900

1,850

1,800

1,840

1,790

1,860

1,890

1,880

1,820

1,830

1,890

1 , 840

1,890

1,940

1,800

1,830

1,830

1,860

71,370

2,302

141,600

Aug.

1,860

1,890

1,900

1,900

1,860

1,900

1,910

1,900

2,040

2,180

2,020

1,850

1,940

1,940

1,900

*1,910 

1,780

1,940

1,910

1 , 880

1,900

1,860

1,840

1,880

1,860

1,900

' 1,860

2,070

2,240

1^850

59,570

1,922

118,200

Sept.

1,970

2,060

1,840

1,820

1,910

,750

,960

,910

,880

,800

,790

,900

,910

,910

1,890

1,780 

1,790

*1,800

1,830

1,860

1,840

1,900

1,830

1,840

1,910

1,880

1,800

1,840

2,060

1,910

56,210

1,874

111,500

Calendar year 1955: Max 20,600 Mln 4 Mean 2,245 Ac-ft 1,625,000

Water year 1955-56: Max 20,600 Mln 4 Mean 4,140 Ac-ft 3,006,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge 

station near Payette.

nt and records for
184 PAYETTE RIVER BASIN

Payette River near Payette, Idaho

Location. Lat 44°02'30", long 116°55'30", in SW£ sec. 10, T. 8 N., R. 5 W. , on right 

bank at highway bridge, if miles south of Payette.

Drainage area. 3,240 sq mi, approximately.

Records available.--August 1935 to September 1956. Records for January 1895 to July 1897 

(published as ''at Payette" in 18th and 19th Annual Reports), found to be unreliable.

Gage.--Water-stage recorder. Datum of gage is 2,138.44 ft above mean sea level, unadjusted. Aug. 1, 1935, to Aug. 7, 1939, wire-weight gage at site 50 ft downstream at 

present datum.

Average discharge. 21 years, 3,144 cfs (2,276,000 acre-ft per year).

Extremes.--Maximum discharge during year, 21,900 cfs Dec. 23 (gage height, 12.75 ft); 

minimum, 326 cfs Nov. 30 (gage height, 4.12 ft); minimum daily, 335 cfs Nov. 29.

1935-56: Maximum discharge, 23,400 cfs May 2, 1938 (gage height, 11.90 ft); minimum, 180 cfs Oct. 13, 20, 1935 (gage height, 2.04 ft); minimum daily, 220 cfs Oct. 5, 

1935.

Remarks. Records excellent except those for periods of ice effect or indefinite stagedischarge relation, which are good. Diversions above station for irrigation of about 

188,000 acres. Flow regulated by Black Canyon Dam and reservoirs on tributary streams.

Revisions (water years).--See Records available. WSP 1397: 1949(m), 1952, 1953-54( m ).

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

1,750

1,840

1,730

1,680

1,770

1,800

1,820

1,820

1,820

1,770

1,820

1,940

 1,970

1,970

2,050

1,970 

1,800

1,800

1,790

1,840

1,970

1,940

1,940 

1,970

2,010

2,010

2,010

1,990

1,950

1,990

*2, 150

58,680

1,893

116,400

Nov.

2,090

2,030

1,790

1,710

1,940

1,920

1,790

1,710

1,640

1,580

1,790

1,940

1,610

1,750

bl,750

1,540 

1,020

1,410

1,900

2,270

2,290

2,330

2.350 

2,290

2,060

498

400

*356

335

595

48,684

1,623

96,560

Dec.

1,990

2,090

2,010

1.9OO

1,860

1,630

1,660

1,880

1,840

1,820

1,770

1,680

1,920

2,010

1,680

1,550 

1,390

1,610

1,900

*3,370

3,520

8,040

* 19. 400 

17,000

9,590

6,620

5,880

4,950

4,100

*3,360

3,150

122,970

3,967

243,900

Jan.

3,360

3,280

3,030

2,860

2,750

2,690

2,490

2,410

2,290

2,160

2,250

2,140

2,080

2,310

3,330

6,100 

4, 655

3,720

3,360

3,130

3,000

3,050

5,O5O 

3,540

2,860

2,470

2,610

2,450

2,290

2,470

2,200

92,380

2,980

183,200

Feb.

2,200

*2,210

bl,950

bl,900

1,990

2,290

2,200

2,050

1,970

1,840

2,050

2,180

2,390

2,140

1,990

bl,900 

bl,700

1,966

2,290

2,230

2,250

*2,490

2,120 

2,100

2,060

2,200

2,210

2,180

2,330

61,310

2,114

121,600

Mar.

2,590

2,820

3,240

3,190

3,110

2,940

2,730

2,670

*2,940

3,070

3,050

2,940

2,980

3,110

3,000

3,070 

3,430

3,690

3,960

4,270

4,510

4,720

4,650 

4,880

7,600

8.290

7)900

6,940

6,400

6,200

6,250

131,140

4,230

260,100

Apr.

6,180

5,820

5,580

5,600

5,600

5,500

5,450

5,480

5.220

5,520

6,320

7,780

8,530

8,920

8,650

10,200 

* 10, 500

9,160

9,670

10,700

11,200

11,600

12,000 11,566

10, 600

10,200

10,400

10,300

9,670

8,920

252,770

8,426

501,400

May

8,170

7,870

7,780

8,110

9,220

9,160

9,190

9,280

9,190

9,250

9,790

9,820

8,860

8,080

7,690

7.630 

8,116

9,160

9,880

10,300

* 11, 300

11,900

12,600 

13,200

14.600

13,300

13,800

14,400

13,000

12,400

12,300

319,340

10,300

633,400

June

12.700

'12,600

11,800

11,200

11,300

11,800

11,500

12,000

12,700

12,200

12,400

11,600

9,910

9,220

8,290

8,920 

7,600

6,500

6,080

*6,180

6,910

6,520

6,150 

5,820

5,180

4,340

3,760

3.540

3,856

4,480

257,050

8,568

509,900

July

4,320

3,980

3,520

2,820

2,270

2,100

2,180

2,250

2,140

1,750

*1,740

1,680

1,500

1,540

1,430

1,370

1,400

1,450

1,360

1,410

1,420

1,370

1,360 

1,430

1,420

1,420

1,520

1,530

1,470

1,540

1,570

58,060

1,873

115,200

Aug.

1.530

1,590

1,600

1,640

1,600

1,590

1,620

1,600

1,570

1,690

1,640

1,570

1,560

1,600

1,590

*1,600 

1,570

1,620

1,590

1,590

1,570

1,600

1,650 

1,680

1,720

1,780

1,830

1,860

2,070

1,946

1,810

51,470

1,660

102,100

Sept.

1,860

1,900

1,860

1,740

1,750

1,780

1,650

1,900

1,830

1,780

1,750

1,790

1,920

1,880

1,890

1,780

1,710

*1,740

1,720

1,790

1,810

1,820

1,860 

1,860

1,860

1,820

1,720

1,690

1,960

2.000

54,420

1,814

107,900

Calendar year 1955: Max 19,400 Mln 335 Mean 2,292 Ao-ft 1,660,000

Water year 1955-56: Max 19,400 Mln 335 Mean 4,121 Ao-ft 2,992,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. Stage-discharge relation indefinite Aug. 7 to Sept. 3; discharge computed on basis of 

recorder record, 1 discharge measurement, and records for station near Emmett.
WEISER RIVER BASIN 185

Weiser River at Tamarack, Idaho

Location. Lat 44°57', long 116°23', in NW^NE^ sec. 31, T. 19 N. , R. 1 E. , on left bank 

43 ft upstream from railroad bridge, 0.65 mile south of Tamarck, and l| miles upstream 

from Beaver Creek.

Drainage area. 36.5 sq mi.

Records available. September 1936 to September 1956.

gage. Water-stage recorder. Altitude of gage is 4,080 ft (by barometer). Prior to 

Oct. 8, 1949, staff gage at site a quarter of a mile upstream at different datum.

Average discharge. 20 years, 44.1 cfs (31,930 acre-ft per year).

Extremes. Maximum discharge during year, 1,320 cfs Dec. 22 (gage height, 7.17 ft); minimum, 0.7 cfs Oct. 1 (gage height, 1.09 ft).

1936-56: Maximum discharge, that of Dec. 22, 1955; minimum, that of Oct. 1, 1955.

Remarks. Records good except those for periods of shifting control, ice effect or no 

gage-height record, which are fair. No diversion above station. Diurnal fluctuation 

caused by millpond at Tamarack. Small flow from Boulder Creek in Salmon River basin 

enters Weiser River above station through transmountain diversion during late irrigation season.

Rating table, water year 1955-56, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Oct. 1-30, Dec. 22-2s, July 18-30)

1.3

1.4 

1.6 

1.9

2.2 54

2.6 92

3.0 152

3.5 250

4.0 350

5.0 567

6.0 870

7.0 1,250

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

11

6.8

9.9

11

17

16

14

13

12

17

23

T5

14

13

13

11

8.8

9.9

9.5

9.2

8.5

8.0

7.4

6.8

6.8

11

9.5

8.2

7.7

*8.8

8.8

348.6

11.2

691

Nov.

8.0

6.6

777

13

16

11

11

8.0

8.5

12

14

9.9

8.5

b8.0

b7.5

b7.5

7.7

12

9.2

26

38

30

25

22

20

20

20

21

22

22

452.1

15.1

897

Dec.

22

20

18

b!5

*bTB"

17

b!8

b!8

18

18

17

18

b!7

b!6

b!6

b!6

17

18

31

77

291

*1,040

741

360

202

175

234

158

*bllO

b!20

107

3,960

128

7,850

Jan.

87

75

64

61

55

52

48

45

37

40

37

35

34

33

32

31

*b32

b33

b33

b34

35

35

34

32

b32

b31

b30

b29

b27

b26

b25

1,234

39.8

2,450

Feb.

b24

b23

b22

b22

b21

20

18

b!8

b!9

18

17

18

17

17

b!7

b!6

b!6

b!7

b!7

b!7

18

20

24

23

23

*21

20

2O

20

563

13.4

1,120

Mar.

20

20

22

22

b21

b20

b20

21

21

b20

b!9. bT5l

20

b!9

b!9

b!9

20

23

26

28

32

44

75

175

278

302

246

208

200

194

184

2,357

76.0

4,680

Apr.

173

167

*173

190

210

200

196

198

232

278

332

390

400

417

430

474

426

388

371

377

382

379

375

336

*288

250

224

200

180

160

8,796

293

17,450

May

150

135

125

150

190

190

200

200

2 DO

200

210

T5o

170

150

140

130

120

120

125

125

115

100

90

80

*63

52

65

55

48

45

* Q oy

3,972

128

7,880

June

36

34

31

31

34

30

28

23

24

26

19

21

18

10

27

32

27

20

20

26

22

20

19

*20

18

17

15

14

14

13

689

23.0

1,370

July

13

13

14

12

12

11

11

9.9

9.2

9.2

8.8

8.8

9.2

8.8

8.8

8.5

8.5

8.0

8.0

8.0

7.7

7 . 7

8.2

9.5

8.8

8.5

8.5

9.5

9.5

*8.7

8.2

294.5

9.50

584

Aug.

8.5

9.9

8.2

8.2

8.0

8.0

8.5

9.2

8.5

8.2

8.0

7.7

7.4

7.4

7.4

7.1

6.8

6.8

6.6

7.4

6.8

6.8

7.1

*7.1

6.5

9.5

~9.5 11

8.2

7.7

7.1

244.9

7.90

486

Sept.

6.8

6.8

6.6

6.6

6.6

6.3

6.6

6.3

6.3

6.0

6.3

6.0

6.3

6.0

6.0

6.0

6.0

6.3

6.3

6.3

6.6

6.6

6.6

6.6

6.8

6.6

6.8

*6.8

6.8

6.8

193.4

6.45

384

Calendar year 1955: Max 1,040 Mln 3.1 Mean 4O.2 Ac-ft 29,120

Water year 1955-56: Max 1,040 Mln 6.0 Mean 63.1 Ac-ft 45,840

Peak discharge (base, 280 efs).--Dec. 22 (4 p.m.) 1,320 cfs (7.71 ft); Dec. 27 ( 1 a.m.) 286 cfs 

(3.98 ft); Mar. 25 (8 p.m.) 336 cfs (3.91 ft); Apr. 16 (3 p.m.) 513 cfs (4.74 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. Shifting-control method used Oct. 1-3O, Dec. 22-28, June 10 to July 3O. No gage-height 

record Jan. 14-16, Apr. 28 to May 24; discharge estimated on basis of recorded range In stage, 

weather records, and records for nearby stations.

467239 O-58 13
186 WEISER RIVER BASIN

Lost Valley Reservoir near Tamarack, Idaho

Location.--Lat 44°57'30", long 116°28'00", in sec. 28, T. 19 N., R. 1 W., a short distance upstream from outlet gates near left end of dam on Lost Creek, 4 miles west 

of Tamarack and 16 miles north of Council.

Drainage area.--29.4 sq mi.

Records available. May to September 1924, May 1926 to September 1956 (fragmentary).

Gage. Staff gage. Datum of gage is 4,748.8 ft above mean sea level (river-profile 

survey). Prior to May 1926, at datum 1.4 ft higher.

Extremes.--Maximum gage height observed during year, 26.30 ft June 20; minimum observed, 

3.05 ft Oct. 9.

1924, 1926-56: Maximum gage height observed, 26.90 ft May 14, 1940; no storage at 

times during several years.

Remarks.--Reservoir is formed by earth dam completed in 1910 and raised 6 ft in 1929. 

Permanent spillway crest is at gage height 22.26 ft; flashboard structure built in 

1938 to permit storage to gage height 25.9 ft. Bottom of outlet tunnel is at gage 

height 1.46 ft, but natural flow through reservoir limits withdrawal below about gage 

height 2.8 ft. Water is used for irrigation of lands in Weiser River basin.

Cooperation. Twenty-four gage readings furnished by Lost Valley Reservoir Co. 

Revisions. WSP 833: Drainage area.

Daily gage height, in feet, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

_

_

6.00

5.50

_

_

3.05 

3.15

3.35

_

3.08

3.06

_

_

_

_

-

_

_

_

-

_

_

3.41

-

Nov.

4.10

Dec, Jan.

19.26

Feb.

21.40

Mar. Apr.

-

-

-

:

-

-

_

~

24.00

-

24.50

"

-

-

-

-

.

-

-

-

-

24.30

-

-

23.80

May

-

"

-

:

-

-

-

=

23.55

-

-

"

-

-

~-

24.30

_

_

-

24.42

-

_

-

_

_

-

June

-

-

24.90

1

-

-

_

25.35

-

-

-

"

-

-

-

-

26.30

-

-

26.08

-

-

_

-

-

July

-

-

-

1

-

-

25.96

25.96

-

25.94

-

~

25.32

25.10

-

-

-

24.42

-

-

-

_

23.68

-

-

23.26

Aug.

-

-

22.30

-

-

21.70

_

-

-

-

-

-

-

"

-

-

-

-

-

-

-

-

-

Sept.

Note. Sage-height readings obtained only on days listed abo
WEISER RIVER BASIN 187

Lost Creek near Tamarack , Idaho

Location. Lat 44°57' , long 116°28', In SE^NWij sec. 28, T. 19 N., R. 1 W. , on right bank 

a quarter of a mile downstream from dam of Lost Valley Reservoir, 4 miles west of 

Tamarack, and 16 miles north of Council.

Drainage area. 29.4 sq mi.

Records available .--January 1910 to August 1914, May 1920 to September 1921, May 1924 to 

November 1929 (fragmentary); March 1930 to September 1956.

Gage . Water-stage recorder. Datum of gage is 4,729.6 ft above mean sea level (riverprofile survey). Prior to Apr. 1, 1912, staff gage at same site and datum.

Average discharge .--26 years (1930-56), 39.0 cfs (28,240 acre-ft per year).

Extremes. --Maximum discharge during year, 392 cfs Apr. 23, 24 (gage height, 3.23 ft); 

minimum , 0.4 cfs Oct. 25,26 (gage height, 0.86 ft).

1910-14, 1920-21, 1924-56: Maximum discharge, 688 cfs May 17, 18, 1921 (gage 

height, 4.29 ft); practically no flow at times when gates In dam were closed.

Remarks . --Records good except those below 10 cfs, which are fair, and those for periods 

of no gage-height record, which are poor. No diversion between reservoir and station; 

practical"1 _, entire flow diverted below station during irrigation season. Flow 

regulated since 1910 by Lost Valley Reservoir (see preceding page).

Cooperation. Water-stage recorder inspected occasionally by employees of Lost Valley 

Reservoir Co.

Revisions. --WSF 833: Drainage area.

Rating table, water year 1955-56 (gage height, In feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Apr. 23-27)

1.1

1.2

1.3 

1.5 

1.7

63

112

190

300

420

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IB

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota:

Mean

Ac- ft

Oct.

87

32

76

62

38

14

9.3

9.3

8.5

14

14

10

9.3

8.5

8.2

7.9

7.6

7.3

7.6

7.3

6.6

7.O

7.0

5.4

677

12

8.9

8.5

*8.2

14

9.7

581.8

18.8

1,150

Nov.

8.2

6.6

9.7

14

19

11

11

9.7

10

14

18

10

12

8

7

8

10

11

10

20

40

30

12

5.5

5.5

5.5

5.5

5.5

5.5

5.5

347.7

11.6

690

Dec.

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

170.5

5.50

338

Jan.

5.5

575

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

*5.4 575"

5.5

5.5

5\5

Si,. 5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

170.4

5.50

338

Feb.

5.5

575

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

*5.4

_

159.4

5.50

3316

Mar.

5.4

5.0

570

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.4

5.4

5.4

5.4

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

6.0

10

19

26

33

38

267.1

8.62

530

Apr.

43

44

44

45

50

51

55

58

61

70

90

*119

150

270

348

348

344

316

308

324

348

376

388

380

356

*316

272

242

214

194

6,224

207

12,350

May

178

172

169

172

190

208

214

218

2T8

218

218

188

166

160

129

85

106

132

160

181

187

19O

190

*190

133

71

99

114

123

123

121

5,023

162

9,960

June

116 n?

77

30

37

43

46

47

46

40

27

19

 676 5.4

12

19

23

25

27

51

63

57

*55

50

42

21

23

23

23

22

1,188.0

39.6

2,360

July

22

22

23

22

21

20

19

19

19

32

51

49

51

56

55

58

62

6?

62

61

61

61

61

61

61

61

61

61

61

*61

61

1,457

47.0

2,890

Aug.

59

59

59

58

59

62

62

62

62

62

61

61

59

59

59

59

59

59

59

62

66

SS

66

66

*64

64

63

63

63

63

62

1,907

61.5

3,780

Sept.

62

61

61

59

59

58

58

57

57

57

57

57

57

56

56

56

47

38

38

38

38

38

38

40

44

44

*44

44

43

43

1,505

50.2

2,990

Calendar year 1955: Max 26O Mln 5.0 Mean 32.3 Ac-ft 23,390

Water year 1955-56 : Max 388 Mln 5.0 Mean 51.9 Ac-ft 37,69O

* Discharge measurement made on this day.

Note. Ho gage-height record Nov. 14 to Jan. 18, Jan. 20 to Feb. 28; discharge estimated on basis 

if weather records, reported gate openings at Lost Valley Reservoir, 2 discharge measurements, and 

records ecords for nearbypv streams streams.
188 WEISER RIVER BASIN

Weiser River near Cambridge, Idaho

Location. Lab 44°35' , long 116°38' , in NE£ sec. 1, T. 14 N., R. 3 W. on left bank 

100ft upstream from road bridge, 2£ miles northeast of Cambridge, and 2? miles upstream from Rush Creek.

Drainage area. 605 sq mi.

Records available.--March 1939 to September 1956.

Gage.--water-stage recorder. Altitude of gage is 2,660 ft (by barometer). Prior to 

Apr. 23, 1939, staff gage, and Apr. 24, 1939, to Dec. 21, 1955, water-stage recorder 

at site 35 ft downstream from road bridge at different datum, Dec. 22, 1955, to 

Aug. 28, 1956, wire-weight gage at bridge 2^ miles downstream at different datum.

Average discharge.--17 years, 665 cfs (481,400 acre-ft per year).

Extremes.--Maximum discharge during year, 10,100 cfs Dec. 22 (gage height 13 9 ft from 

floodmark, site and datum then in use); minimum observed, 60 cfs Aug. 18 (gage height 

5.73 ft, site and datum then in use).

1939-56: Maximum discharge, that of Dec. 22, 1955; minimum, 23 cfs Oct. 1, 1943.

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

which are fair. Flow partly regulated by Lost Valley Reservoir (see p. 186) and 

other reservoirs. Diversions above station for irrigation of about 9,200 acres.

Rating tables, water year 1955-56, except periods of ice effect,(gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to Dec. 21

0.5 

.7 

1.0 

1.5 

2.0 

2.5

97

149

298

517

780

3.0 

4.0 

5.0 

6.0

7.0

1,080

1,780

2,630

3,610

4,720

Dec. 22 to Aug. 28

5.7 

6.0 

6.3 

6.6 

7.0 

7.5

54

124

234

375

575

860

8.0

9.0

10.0

12.0

13.5

1,240

2,260

3,650

6,680

9,330

Aug. 29 to Sept. 30

2.1

2.2 

2.4

70

89

141

Discharge, in cubic feet per second, water year October- 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IB

19

20

21

22

23 

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

124

122

117 

114

117

104

89

82

~5S 80

119

115

106

102

97

93

91

89

90

90

89

89

89 

89 

89

93

109

*104

103

104

109

3,090

99.7

6,130

Nov.

110

103

103 

119

165

137

122

115

114

124

141

120

alOO

a 80

a90

alOO

112

119

133

a200

a 500

a350~

a240 

a220 

208

a220

a450

341

358

366

5,660

189

11,230

Dec.

469

388

306 

232

*blBO

232

236

blB5

211

202

196

232

252

151

bl9?5

b240

252

236

1,270

3,760

3,920

38,520

*7,790 

4,130 

2,170

1,900

2,680

1,920

1,380

*1,190

1,140

46,160

1,489

91,560

Jan.

979

842

800 

758

724

690

668

646

540

540

555

525

575

597

1,110

2.560

1,470

 1,160

993

951

881

860

1,300 

1,020 

718

707

836

602

b550

bSOO

b400

25,857

834

51,290

Feb.

b390

a3BO

a470 

a520

a540

a490

a360

a340

a310

a300

a320

a330

a340

a320

a290

a220

a200

a250"

a270

a290

a600

bl,5OO

2,540 

1,160 

895

*764

680

736

680

16,305

562

32,340

Mar.

680

895

1,210 

1,050

830

729

624

663

663

580

485

450

505

435 450"

520

696

979

1,160

1,160

1,280

1,600

1,990 

2,550 

2,970

2,850

2,270

1,770

1,530

1,540

1,460

36,574

1,180

72,540

Apr.

1,400

1,240

1,200 

*1,230

1,250

1,200

1,230

1,180

1,220

1,400

1,690

2,150

2,350

2,550

2,830

3,170

3,100

2,820

2,780

2,940

3,100

3,280

5.520 

*3,140 

2,830

2,520

2,390

2,200

1,980

1,790

65,480

2,183

129,900

May

1,620

1,560

1,510 

1,860

2,160

2,130

2,080

2,350

*2,240

2,190

2,190

1,940

1,680

1,550

1,540

1,560

1,670

1,920

2,140

2,340

2,390

2,380

*2,320 

2.460 

2,210

2,020

2,350

2,030

1,930

1,910

1,810

62,040

2,001

123,100

June

1.780

1,600

1,420 

1,310

1,190

1,070

930

888

881

902

867

782

724

685

854

1,100

854

770

712

740

752

*6B5

668 

646 

608

535

500

455

I3o" 415

25,753

858

51,080

July

351

385

375 

332

304

318

262

262

212

191

217

191

173

173

180

162

169

152

152

146

140

136

130 

116 

110

119

*108

100

95

92 

1C5

5,958

192

11,820

Aug.

76

86

72

76

72

64

74

76

79

74

74

74

70

68

68

70

64

60

66

68

62

68

74 

70 

*76

100

140

146

*T2T

121 

116

2,531

81.6

5,020

Sept.

116

US

108 

106

103

99

96

96

94

91

89

91

87

85

83

83

83

83

76

74

72

71

78 

76 

78

 80

80

94

96

94

2,678

89.3

5,310

Calendar year- 1955: Max 8,520 Min 70 Mean 563 Ac-ft 407,500

Water year 1955-56: Max 8,520 Min 60 Mean 814 Ac-ft 591,300

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for station 

near Weiser and nearby streams.

b Stage-discharge relation affected by ice.
WEISER RIVER BASIN 189

Pine Creek near Cambridge, Idaho

Location. Lat 44°35' , long 116°44' , in SW£ sec. 32, T. 15 N. , R. 3 W., on right bank 

300 ft upstream from West Pork and 3.2 miles northwest of Cambridge.

Drainage area. 54 sq mi, approximately.

Records available. April 1938 to September 1956.

Gage. Staff gage read twice daily. Altitude of gage is 2,800 ft (by barometer). Prior 

to Mar. 7, 1951, staff gages at nearby sites at present datum.

Average discharge. IS^years, 39.0 cfs (28,240 acre-ft per year).

Extremes. Maximum discharge observed during year, 420 cfs Dec. 22 (gage height, 3.65 ft, 

from floodmarks), from rating curve extended above 190 cfs on basis of slope-area 

determination at peak stage and slope-conveyance study; minimum observed, 1.6 cfs 

Aug. 22, 23 (gage height, 1.10 ft).

1938-56: Maximum discharge observed, 505 cfs May 27, 1948 (gage height, 3.60 ft), 

from rating curve extended above 200 cfs by logarithmic plotting, but may have been 

more when gage was overtopped June 3, 1948; maximum gage height observed, that of 

Dec. 22, 1955; minimum observed, 0.7 cfs Aug. 3, 1949, July 13, 14, 1954; minimum gage 

height observed, 0.29 ft Aug. 5, 1952.

Remarks. Records fair except those for periods of ice effect, which are poor, 

diversions above station for irrigation.

Several

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

4.4

4.4

3.5

4.4

4.4

3.5

4.0

3.5

3.5

5.8

7.2

6.8

6.2

5.8

5.3

5.8

5.3

4.8

5.8

5.8

4.8

5.3

5.8

5.3

6.2

7.8

6.8

*8.2

772

7.2

8 . 2

173.0

5.58

343

Nov.

8.8

8.2

8.2

9.2

9.8

9.2

8.8

8.8

9.2

12

13

blO

b5.0

b4.5

b4.0

b5.0

b6.0

b7.5

bid

b20

26

13

13

12

13

14

16

14

14

15

327.2

10.9

649

Dec.

16

14

13

bll

*blO

bll

b!2

b9.5

bio

10

13

13

11

blO

bll

bll

b!2

b!5

35

94

290

*362

*212

117

74

64

83

85

69

59

57

1,813.5

58.5

3,600

Jan.

53

53

43

45

40

38

35

33

33

33

33

33

38

45

60

72

61

54

*49

48

49

69

57

49

56

b50

b45

b40

b38

b35

b50

1,417

45.7

2,810

Feb.

b25

b28

b30

b33

b35

b35

b35

b33

b32

b32

b32

33

33

30

b25

b20

b22

b24

b25

b28

45

49

89

*6T

53

51

48

45

48

1,079

37.2

2,140

Mar.

45

56

74

64

54

53

48

49

48

45

40

42

40

39

58

46

51

59

92

107

139

156

188

234

246

237

197

148

127

115

104

2,981

96.2

5,910

Apr.

94

87

87

*83

76

76

76

73

73

80

87

90

94

98

96

117

119

105

111

113

121

125

125

*127

117

109

107

109

102

104

2,981

99.4

5,910

May

104

102

96

115

109

109

115

113

115

119

107

98

98

98

107

115

141

164

206

210

243

239

*215

212

199

177

182

150

160

154

175

4,547

147

9,020

June

156

135

119

113

89

85

83

83

89

83

80

76

69

62

89

80

68

59

59

54

49

46

*43

40

36

33

32

29

28

28

2,095

69.8

4,160

July

26

24

24

23

22

19

19

17

17

15

16

14

12

12

10

9.7

9.3

8.9

8.2

7.5

6.8

6.2

5.9

5.5

5.2

5.2

*5.5

5.2

5.2

5.2

5.2

374.7

12.1

743

Aug.

5.5

5.9

5.2

5.5

5.2

5.2

5.2

5.2

4.7

3.7

3.2

3.4

3.4

3.0

3.0

3.4

3.0

2.6

2.4

2.2

2.1

2.0

1.8

270

*2.4

4.4

5.2

3.7

3.4

3.4 

3.0

114.3

3.69

227

Sept.

3.0

3.0

3.2

3.2

3.2

2.2

2.6

2.6

3.0

3.2

3.0

3.2

3.2

2.7

2.7

2.7

2.6

2.6

2.1

2.1

2.7

3.2

2.7

2.7

2.7

il *2.4

2.6

2.2

2.7

83.7

2.79

166

Calendar year 1955: Max 362 Mln 1.2 Mean 27.1 Ac-ft 19,630

Water year 1955-56: Max 362 Mln 1.8 Mean 49.1 Ao-ft 35,680

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
190 WEISER RIVER BASIN

Little Weiser River near Indian Valley, Idaho

Location.--Lat 44°30' , long 116°24' , in NE£ sec. 1, T. 13 N., R. 1 W., on left bank 60 ft 

 downstream from barn at Richardson Ranch, 1 mile upstream from diversion feeding into 

C. Ben Ross Reservoir, and 4f miles southeast of Indian Valley.

Drainage area. 81.9 sq mi.

Records available. June 1920 to February 1921, March to June 1923, February 1924 to 

October 1927, April 1938 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,250 ft (by barometer). Prior to 

T^eb. 25, 1924, staff gage at approximately present site at different datum. Feb. 25 

to Apr. 22, 1924, staff gage at Burger Ranch 1 mile downstream at different datum. 

Apr. 23, 1924, to Nov. 18, 1927, water-stage recorder or staff gage at site half a 

mile downstream at different datum. May 6, 1938, to Aug. 11, 1950,staff gage at present site and datum.

Average discharge.--21 years (1924-27, 1938-56), 105 cfs (76,020 acre-ft per year).

Extremes. Maximum discharge during year, 1,200 cfs Dec. 22 (gage height, 4.67 ft); minimum, 3.3 cfs Nov. 13 (gage height, 0.25 ft).

1920-21, 1923-27, 1938-56: Maximum discharge observed, about 1,840 cfs Feb. 4, 

1925; minimum recorded, 3.0 cfs sometime during period Nov. 21 to Dec. 7, 1954 (gage 

height, 0.18 ft).

Remarks. Records good except those for periods of ice effect, which are fair. One small 

ranch diversion above station. Many diversions below station for irrigation including 

feeder canal to C. Ben Ross Reservoir.

Revisions (water years). WSP 1347: 1923.

Rating tables, water year 1955-56, except for periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Dec. 22 22 to Sept. 30

1.0

1.3 

1.6

4.5

6.4

12

21

34

61

97

2.0 

2.5 

3.0 

3.5 

4.0 

4.5

173

315

482

670

870

1,110

1.0 

1.3 

1.6

8.1

11

101

2.0 

2.5 

3.0 

3.5 

4.0 

4.5

177

306

460

625

840

1,100

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac -ft

Oct.

11 

11

10

11

15

12

12

12

12

14

24

16

16 

14

13

12

12

11

12

12

12

11

11

11

11

14

14

12

*13

14 

14

399

12.9

0.158

0.18

791

Nov.

12

11

15

19

12

14

14

13

14

19

20

9.7

5.4 

be.O

7.2

6.6

14

15

22

68

73

41

32

28

26

30

41

36

36

37

707.9

23.6

0.288

0.32

1,400

Dec.

42 

38

34

25

*ZO

36

32

28

31

28

30

68

52 

b32

b40

45

42

39

321

392

375

920

502

298

218

233

202

*159

124

115

107

4,628

149

1.82

2.10

9,180

Jan .

94 

85

79

77

85

77

74

71

64

62

60

59

65 

62

411

410

239

*177

143

126

112

114

147

112

94

90

85

75

75

62

b45

3,531

114

1.39

1.60

7,000

Feb.

b42 

b47

b51

b53

b55

56

56

49

47

47

47

51

49 

46

41

b32

b45

45

42

44

56

65

85

*59

53

50

49

47

47

1,456

50.2

0.613

0.66

2,890

Mar.

47 

52

57

55

52

49

48

49

49

46

41

41

44 

40

3_9

44

56

79

91

100

111

155

222

289

500

270

208

173

162

157

151

3,277

106

1.29

1.49

6,500

Apr.

135 

124

*115

115

117

112

112

111

IZ6

166

212

233

251 

281

303

377

350

344

371

399

425

447

444

418

*377

350

362

326

292

267

8,062

269

3.28

3.66

15,990

May

256

251

246

318

326

306

354

409

374

396

444

384

341 

320

320

341

390

447

513

592

622

646

*672

740

628

639

740

668

632

605

595

14,515

468

5.71

6.59

28,790

June

599 

549

500

480

409

344

318

323

338

341

323

298

281 

284

323

273

222

202

198

200

170

153

*147

149

133

124

119

114

107

98

8,119

271

3.31

3.69

16,100

July

94 

90

87

81

77

75

72

67

64

61

60

58

55 

54

50

47

44

41

38

36

36

34

34

35

34

30

29

28

*26

24

- 23

1,584

51.1

0.624

0.72

3,140

Aug.

f

24

22

24

22

20

18

17

16

16

16

15 

14

16

15

14

13

13

13

12

12

11

11

*12

21

18

17

15

13

13

510

16.5

0.201

0.23

1,010

Sept.

. 12 

12

12

11

11

11

11

10

9.7

9.4

9.1

9.4

9.9 

9.7

9.1

9.1

8.9

8.9

8.9

9.1

9.9

9.9

9.9

9.4

9.1

9.1

*9.4

12

11

10

300.9

10.0

0.122

0.14

597

Calendar year 1955: Max 920 Mln 5.4 Mean 81.6 Cfsm 0.996 In. 13.52 Ac-ft 59,040

Water year 1955-56: Max 920 Mln 5.4 Mean 129 Cfsm 1.58 In. 21.38 Ac-ft 93,390

Peak discharge (base, 400 cfs). Dec. 22 (12 m.) 1,200 cfs (4.67 ft); Jan. 15 (6 p.m.) 88C 

(4.08 ft); AprT 21 (10 p.m.) 490 cfs (3.08 ft); May 7 (8:30 p.m.) 510 cfs (3.15 ft); May 23 

(11 p.m.) 950 cfs (4.22 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.
WEI3ER RIVER BASIN 191

Crane Creek Reservoir near Midvale, Idaho

Location.--Lat 44°21'30", long 116°37'00", In 8E£ sec. 19, T. 12 N. , R. 2 W., at gatecontrol structure near left end of dam on Crane Creek, 9| miles southeast of Midvale.

Drainage area.--B42 sq ml.

Records available.--November 1923 to September 1956 (fragmentary).

Gage.--Staff gage. Altitude of gage is 3,190 ft (by barometer).

Extremes.--Maximum gage height observed during year, 48.5 ft May 13; minimum observed 

32.4 ft Oct. 10, 17, 28. '

1923-56: Maximum gage height observed, 56.3 ft Feb. 22, 1927; no usable contents 

Sept. 23, 1928, to Feb. 28, 1929, Sept. 25 to Dec. 1, 1929, Oct. 22 to Dec. 3, 1952.

Relr^^ (Revi sed). Reservoir is formed by earth dam completed in 1910 and raised in 

I9HU-H1 Spillway crest is at gage height, 54.9 ft, and bottom of outlet tunnel is 

« r, S!S^ cl % *l : ft ' APProxlmat e contents is 51,700 acre-ft between gage height, 

b.O and 55.0 ft, based on capacity table computed by the Geological Survey In 1927 

and extended above 43.0 ft by the Idaho Department of Reclamation in 1935 No 

usable contents below gage height, 7.0 ft. '

Cooperation.--Gage readings furnished by Crane Creek Reservoir Administration Board. 

Revisions.--WSP 833: Drainage area.

Gage height, In feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12 

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Oct.

-

-

-

-

-

_

-

I

32.4

-

_

-

-

_

32.4

-

-

-

-

_

_

-

.

~

32.40

_

_

-

Nov.

_

_

_

_

-

_

-

32". 6

-

"

^

-

_

_

-

-

.

_

32 9

Dec.

-

-

-

-

33.42

-

"

-

-

_

_

-

_

_

_

38.7

-

45.8

-

47.3

_

_

.

45.7

Jan.

-

-

-

-

-

.

44.8

"

-

-

I

-

-

46.7

-

-

47.31

47 .0

_

_

-

.

46.2

46,2

__

Feb.

-

46.3

-

-

_

-

_

-

-

_

-

-

_

-

-

_

-

-

43.92

-

.

44.7

_

Mar.

-

-

-

-

-

_

-

_

-

-

_

-

47.3

_

-

-

_

-

47.9

_

-

_

_

_

_

_

-

Apr.

-

47.8

-

47.90

"

-

-

_

-

-

_

-

-

_

-

-

_

-

48.2

_

48.22

-

_

-

-

-

48.3

May

-

-

-

-

-

-

-

-

-

-

48.5

-

-

-

-

-

-

-

48.26

-

-

-

_

-

48.3

-

_

-

June

-

-

48.3

"

-

"

-

"

-

-

-

'

-

-

-

-

48.2

48.15

-

-

-

-

-

-

-

-

 

July

-

~

~

-

47.7

-

47.0

-

"

~

-

"

45.5

45.3

-

~

44.67

-

-

-

-

"

Aug.

-

-

-

-

"

42.3

"

-

-

41.4

-

-

'

-o

40. c.

-

-

-

-

38.8

-

-

38.08

-

37 .6

-

_

-

Sept.

37.0

~

~

-

35.8

-

35.2

"

-

-

-

-

-

-

33.8

33.7

33.55

-

-

-

-

-

-
192 WEISER RIVER BASIN

Crane Creek near Midvale, Idaho

Location. Lat 44°21'30", long 116°37'10", in SE£ sec. 19, T. 12 N., R. 2 W. , on left 

bank 400 ft downstream from Crane Creek Dam and 9-J miles southeast of Midvale.

Drainage area. 242 sq mi.

Records available. October 1910 to September 1911, January 1912 to September 1915, 

January to April 1916, May 1924 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 3,140 ft (by 

oarometer). Prior to May 1, 1924, staff gage at site 100 ft upstream at different 

datum. May 1, 1924, to Dec. 7, 1952, water-stage recorder on right bank at datum 

1.54 ft higher.

Average discharge. 35 years (1912-15, 1924-56), 72.7 cfs (52,630 acre-ft per year).

Extremes.--Maximum discharge during year, 706 cfs Dec. 27 (gage height, 4.76 ft); no 

flow for long period.

1910-16, 1924-56: Maximum discharge observed, 4,240 cfs Dee. 3, 1910 (gage height, 

8.9 ft, site and datum then in use), from rating curve extended above 3,500 cfs; no 

flow at times in many years when gates in dam were closed.

Remarks.--Records good except those below 1 cfs, which are fair. Plow regulated since 

1911 by Crane Creek Reservoir (see preceding page). No large diversion above station.

Cooperation.--Water-stage recorder inspected by Crane Creek Reservoir Administration 

Board.

Revisions (water years). WSP 833: Drainage area. WSP 963: 1941(M). WSP 1347: 1925, 

1927.

Rating tables, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to July 8 July 9 to Sept. 30

1.5

1.6

1.7

1.8

1.9

2.0

.4

3.3

7.3

12

18

2.5

3.0 

3.5

4.0 

4.5 

4.8

59

114

193

340

560

730

2.3 

2.5 

3.0 

3.5

64

124

207

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.4

2.1

2.1

2.1

2.1

2.1

2.4

l.S

1.8

1.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

0

0

0

0

0

0

*0

0

0

0

22.0

0.71

44

Nov.

0

0

0

Dec.

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

3.3

.6

.6

121

348

348

484

700

700

694

694

620

4,713.5

152

9,350

Jan.

392

392

3SS

388

388

388

273

169

169

169

167

T67

167

167

167

347

520

520

*520

520

571

642

648

648

648

648

642

620

560

520

520

13,045

421

25,870

Feb.

520

520

515

515

510

352

88

87

87

87

87

87

87

87

87

87

86

86

86

86

86

87

*87

87

88

88

54

20

20

4,764

164

9,450

Mar.

20

20

20

19

19

19

19

19

19

19

19

19

19

19

19

19

19

18

18

18

18

38

89

89

88

88

88

88

88

89

89

1,232

39.7

2,440

Apr.

88

71

.:

2.8

9.5

9.1

*8.6

8.6

8.6

8.2

7.8

7.8

8.6

240.5

8.02

477

May

12

12

12

11

11

11

11

11

11

11

10

10

24

34

34

34

34

34

34

35

35

*21

6.9

6.5

6.1

6.5

6.5

6.5

6.5

6.5

6.5

510.5

16.5

1,010

June

6.5

6.1

6.1

6.1

5.7

5.7

5.7

5.3

5.7

5.7

5.7

5.7

5.7

6.1

6.5

6.5

6.5

6.5

6.5

6.5

6.5

*6.5

6.5

6.5

6.5

6.9

6.9

12

24

21

224.1

7.47

444

July

13

13

15

15

15

15

15

26

102

162

189

187

187

187

185

185

185

185

185

183

183

183

183

183

183

*191

203

203

201

201

201

4,364

141

8,660

Aug.

201

199

199

199

197

197

189

180

180

180

180

180

178

178

178

178

182

193

193

191

191

191

197

203

203

*203

203

159

130

115

101

5,648

182

11,200

Sept.

100

99

99

99

98

98

97

97

97

97

97

97

97

95

95

95

94

94

94

94

94

94

94

67

*51

49

49

49

49

48

2,577

85.9

5,110

Calendar year 1955: Max 700 Mln 0 Mean 57.1 Ac-ft 41,330

Water year 1955-56: Max 700 Mln 0 Mean 102 Ac-ft 74,060

* Discharge measurement or observation of no flow made on this day.

Note. No gage-height record Nov. 15 to Dec. 19, Feb. l-5j discharge estimated on basis of 

1 observation of no floty record of gate changes, recorded range In stage, and records for station 

at mouth, near Weiser.
WEISER RIVER BASIN 193

Crane Creek at mouth, near Weiser, Idaho

Location. Lat 44°18' , long 116°47' , in sec. 14, T. 11 N. , R. 4 W., on right bank Just 

downstream from highway bridge at Harris Ranch, a quarter of a mile upstream from 

mouth and 10 miles northeast of Weiser.

Drainage area. 288 sq mi.

Records available.--July to September 1920, February 1921 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 2,240 ft (by 

Darometer).

Average discharge. 35 years (1921-56), 81.1 cfs (58,710 acre-ft per year).

Extremes. Maximum discharge during year, 1,780 cfs Dec. 19 (gage height, 5.26 ft); minimum, no flow for part of May 1; minimum daily, 0.2 cfa May 3.

1920-56: Maximum discharge, 2,350 cfs about Feb. 7, 1925 (gage height, 6.80 ft, 

from high-water marks on gage), from rating curve extended above 1,000 cfs; no flow fop 

part of May 1, 1956; minimum dally, that of May 3, 1956; minimum gage height, 1.30 ft 

Jan. 21, 1922.

Remarks. Records good except those for periods of ice effect, which are fair. Flow 

regulated since 1911 by Crane Creek Reservoir (see p. 191). Several small ditches 

divert above station for Irrigation.

Revisions.--WSP 833: Drainage area.

Rating tables, water year 1955-56, except periods of loe effect (sage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Nov. 26 Nov. 27 to Sept. 30

1.8

1.9

0.5 

1.3 

2.5 

4.2 

7.0

1.4

1.5

1.6

1.7

1.8

1.9 

2.1 

2.4

9.6

19

40

73

128

3.5 

4.0 

4.5

272

505

930

1,470

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

TotaJ

Mean

Ac-ft

Oct.

1.7

1.2

1.7

2.5

2.5

2.0

3.0

2.8

3.2

3.4

4.3

3.9

3.5

3.5

3.7

3.7

2.1

2.7

3.9

4.0

4.0

4.2

4.0

4.0

3.7

3.7

*4.5

4.5

4.5

4^8

4.8

105.9

3.42

210

Nov.

4.8

3.9

2.3

277

3.9

4.2

4.5

4.5

4.5

4.5

4.8

4.5

4.5

4.2

4.5

5.0

4.8

5.6

6.4

9.4

9.0

6.7

5.9

5.9

5.6

6.2

~9.2 13

7.1

6.8

168.9

5.63

335

Dec.

10

13

S.8

7.1

6.2

*7.8

6.2

5.3

675

5.9

7.5

8.5

bB.O

b7.0

b9.0

9.2

8.1

7.1

*487

485

215

305

252

*431

421

596

882

82T

794

785 

723

7,338.2

237

14,560

Jan.

405

400

395

395

420

430

343

204

181

175

173

178

198

184

344

703

670

599

575

 575

615

859

1,150

823

758

740

732

698

631

575

568

15,694

506

31,130

Feb.

b560

b555

554

547

533

377

107

102

102

100

100

102

102

102

102

b95

b96

96

96

100

*267

396

424

142

120

118

94

44

51

6,184

213

12,270

Mar.

69

120

114

68

60

47

41

48

68

46

35

31

31

31

31

31

31 '32

31

31

31

30

94

100

98

98

96

94

96

96

96

1,925

62.1

3,820

Apr.

94

94

25

7.1

*4.8

4.0

3.5

3.5

4.3

5.6

6.5

6.S

6.2

5.3

5.3

5.6

4.2

1.9

4.0

3.3

3.0

1.6

*57T

3.3

2.1

3.3

4.0

2.8

3.0

2.7

325.8

10.9

646

May

0.4

.4

.2

l7T

4.5

6.5

7.5

7.5

8.1

9.6

12

10

11

31

31

29

26

30

29

30

33

*25

7.8

7.8

4.5

4.0

7.8

5.1

5.6

5.1

395.9

12.8

785

June

4.8

2.8

1 . 6

2!s

5.3

5.9

6.8

3.3

4.8

6.8

6.5

6.2

6.2

5.1

5.2

8.8

6.2

4.2

2.7

5.9

*5.9

6.2

6.2

4.8

4.9

4.6

5.L

6.5

13

!§

177.1

5.90

351

July

12

6.4

3.8

3.0

573

5.1

5.6

6.8

56

122

157

162

168

168

168

165

162

168

168

170

170

170

*170

168

162

168

181

184

181

181

184

3,801.0

123

7,540

Calendar year 1955- Max 882 Mln 1.2 Mean 66.1 Ac-ft 47,840

Aug.

181

178

187

184 1ST184

178

162

165

162

160

157

157

157

157

152

157

170

170

170

165

160

168

175

178

184

*187

160

120

109

QQ

Og

5,070

164

10,060

Sept.

93

 §4 94

93

93

91

89

84

84

84

86

86

87

87

84

86

87

87

87

86

87

87

83

 67

47

45

46

45

44

TC

2,361

78.7

4,680

Water year 1955-56: Max 1,150 Mln 0.2 Mean 119 Ac-ft 86,390

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
194 WEISER RIVER BASIN

Welser River near Welser, Idaho

Location. Lat 44°16'50", long 116°47 I 00", In NW^ sec. 23, T. 11 N., R. 4 W., on right 

bank 0.4 mile upstream from county road bridge, If miles downstream from Crane Creek, 

and 9f miles northeast of Weiser.

Drainage area. 1,460 sq mi, approximately.

Records available.--March 1890 to June 1891, December 1894 to October 1896, April to

September 1897, March 1898 to November 1899, March 1900 to December 1904, October 1910 

to December 1914, October 1952 to September 1956. Published as "at Weiser", prior to 

1900.

Gage. Water-stage recorder. Altitude of gage is 2,220 ft (by barometer). Prior to 

October 1952, staff gages at several sites downstream within 2| miles of present site 

at various daturns.

Average discharge. 13 years (1895-96, 1898-99, 1900-04, 1911-14, 1952-56), 1,227 cfs 

(888,300 acre-ft per year).

Extremes. Maximum discharge during year, 19,900 cfs Dec. 23 (gage height, 11.06 ft); 

minimum, 71 cfs Nov. 14 (gage height, 1.49 ft).

1890-91, 1894-1904, 1910-14, 1952-56: Maximum discharge observed, that of Dec. 23, 

1955; minimum observed, 14 cfs Aug. 7, 1911 (gage height, 2.80 ft, site and datum 

then in use).

Flood of Mar. 19, 1932, reached a discharge of about 17,500 cfs.

Remarks.--Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. Flow partly regulated by Crane Creek Reservoir (see p. 191), 

Lost Valley Reservoir (see p. 186), and other small reservoirs. Diversions above 

station for irrigation of about 22,000 acres.

Revisions (water y.ears) , WSP 1347: 1895-1905, 1953(M).

Rating table, water year 1955-56, except periods of lee effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.4 

1.7 

2.0 

2.5

114

194

387

3.0 

3.5 

4.0 

5.0

642

988

1,460

2,740

6.0

7.0

9.0

11.0

4,470

6,620

12,500

19,700

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

157

149

146 

141

141

149

136

121

110

110

119

171

T62

152

146

138

133

128

126

124

124

124

119 

119

116

121

*132

157

152

152

154

4,230

136

8,390

Nov.

160

160

149 

154

194

233

197

180

174

174

204

197

146

b95

bToo

b!30

b!60

b!70

b210

b360

803

642

468 

392

338

325

706

636

529

576

8,962

299

17,780

'. Dec.

700

744

560 

454

292

*b280

b330

329

300

b360

334

392

b420

b250

a330

a500

508

478

1,620

7,170

7,530

*16,000

16,100 

*8,110

4,770

4,030

5,560

4,080

3,040

2,550

2,410

90,531

2,920

179,600

Jan.

1,940

1,770

1,620

1,520

1,520

1,500

1,340

1,160

1,080

939

923 923"

1,010

1,270

1,910

7,120

4,320

3,090

2,580

*2,320

2,190

2,450

2,840 

3,050

2,220

1,970

2,030

1,710

1,580

1,460

1,180

63,535

2,050

126,000

Feb.

964

923

980 

1,130

1,180

1,040

732

700

626

614

642

642

671

648

598

439

401

524

555

598

*1,350

*3,870

5.970 

3,370

2,030

1,670

1,400

1,260

1,270

36,797

1,269

72,990

Mar.

1,590

1,770

2,970 

2,450

1,890

1,460

1,210

1,160

1,340

1,040

884

784

854

791

784

811

1,080

1,610

2,030

2,050

2,190

2,560

3,180

4,000

4,450

4,410

3,710

2,910

2,550

2,370

2,270

63,158

2,037

125,300

Apr.

2,130

1,950

1,750 

1,680

*1,680

1,610

1,590

1.540

1,540

1,750

2,130

2,640

2,860

3,020

3,280

3,680

3,960

3,530

3,460

3,600

3,840

4,020

*4.150 

3,950

3,590

3,210

3,020

2,830

2,550

2,310

82,850

2,762

164,300

May

2,120

2,010

1.950 

2,100

2,740

2,650

2,580

2,880

2,880

2,800

2,910

2,700

2,350

2,150

2,060

2,120

2,270

2,590

2,940

3,300

*3,450

3,550

3,530 

,5.730

3,500

3,110

3,550

3,280

3,110

3,000

2, 890

86,800

2,800

172,200

June

2.840

,580

,310 

,150

,970

,710

,510

,420

,430

,450

,400

,260

,160

,080

,140

,810

,420

,180

1,080

1,090

*1,090

980

907 

862

804

732

659

604

566

545

39,739

1,325

78,820

July

488

429

429 

425

406

401

374

304

304

342

351

351

382

351

351

342

321

313

308

300

296

284

280 

*280

321

273

280

296

288

280

296

10,446

337

20,720

Aug.

277

265

269 

277

273

269

261

247

254

250

250

254

250

247

240

236

240

254

247

244

240

233

226 

233

233

250

*292

329

292

265

230

7,927

256

15,720

Sept.

230

230

223 

207

200

200

197

200

197

200

197

188

188

194

194

188

185

182

182

182

177

182

185 

*182

162

160

T62

162

177

182

5,695

190

11,300

Calendar year 1955: Max 16,100 Mln 95 Mean 930 Ac-ft 673,600

Water year 1955-56: Max 16,100 Mln 95 Mean 1,368 Ac-ft 993,100

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather 

ear Cambridge, Crane Creek near Welser, and other nearby streams. 

b Stage-discharge relation affected by Ice.

:ords for station
WEISER RIVER BASIN 195

Weiser Irrigation District Canal near Weiser, Idaho

Location. Lat 44°15' , long 116°51' , in sec. 32, T. 11 N., R. 4 W., on left bank 3£ miles 

downstream from headworks of canal and 7 miles east of Weiser.

Records available. April 1920 to September 1956 (winter records fragmentary prior to 

1950).

Gage. Water-stage recorder. Altitude of gag^ is^2,160 ft (by barometer).

Extremes.--1920-56: Maximum daily discharge, 220 cfs June 27, July 1, 1954, 

July 6, 11-13, 15-18, 1956; no flow at times when gates were closed.

Remarks. Records excellent except those below 20 cfs, which are good, and those for 

period of no gage-height record, which are poor. Canal diverts water from right bank 

of Weiser River in sec. 35, T. 11 N., R. 4 W., for irrigation of about 11,700 acres, 

including about 1,200 acres irrigated from five diversions above station in projects 

of Weiser and Weiser Bench Irrigation Districts.

Cooperation. Water-stage recorder inspected by employees of Weiser Irrigation District.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

Z6

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

120

To?

92

90

91

87

86

91

81

79

88

91

86

83

49

19

18

19

19

18

18

18

18

18

18

*17

17

18

18

18

18

1,609

51.9

3,190

Nov.

18

T8

18

18

17

18

18

18

18

17

18

18

18

17

16

15

12

6.0

6.4

6.4

6.4

5.2

5.0

4.8

4.4

4.0

3.5

3.5

3.1

3.1

353.8

11.8

702

Dec.

3.1

3.1

3.1

2.7

2.4

*2.1

2.1

1.9

1.9

1.7

1.7

1.7

1.7

1.9

1.7

1.5

1.3

1.1

2.1

5.2

4.4

25

15

4.0

3.1

2.4

2.1

2.1

1.9

1.7

1.5

107.2

3.46

213

Jan.

.5

.5

.7

.5

.5

.3

.1

.1

.1

.1

1.0

.8

.8

.6

1.7

3.1

2.1

1.9

1.7

*1.7

1.9

2.7

5.2

2.7

2.1

2.1

1.9

1.9

1.7

1.7

1.5

54.2

1.75

108

Feb.

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

1.1

O

0

0

0

0

0

0

0

.4

1.9

*1.7

2.1

2.1

2.1

1.9

1.7

1.5

1.5

31.0

1.07

61

Mar.

1.3

TT3

.3

.3

.3

.3

.3

.3

.1

.1

.0

.0

.8

.6

.6

.6

.4

.3

.3

.2

.2

.2

.1

0

0

o

0

0

0

0

0

18.9

0.61

37

Apr.

0

0

o

0

*43

92

96

96

101

112

122

136

152

156

162

168

168

166

166

165

166

167

*173

185

185

191

199

200

T96

194

3,957

132

7,850

May

196

196

196

197

199

196

194

195

195

195

187

184

183

183

183

184

18Z

190

199

201

202

*205

209

210

207

207

208

206

206

206

206

6,107

197

12,110

June

206

2O6

206

206

206

2O6

205

206

207

209

207

209

209

210

212

212

209

206

206

206

205

*208

2O8

209

211

213

213

212

212

215

6,255

208

12,410

July

216

217

216

217

218

220

218

212

211

218

220

220

220

219

2 2O

220

220

220

219

216

216

212

209

*209

212

202

206

206

209

2O9

211

6,658

215

13,210

Aug.

208

206

206

204

198

199

200

196

200

2OO

2OO

200

200

198

190

182

188

196

194

191

190

181

174

184

188

195

*194

183

174

168

164

5,951

192

11,800

Sept.

162

165

T63

165

161

161

158

159

158

149

153

148

146

148

147

145

145

143

142

141

139

141

144

*146

132

126

122

124

130

133

4,396

147

8,720

Calendar year 1955: Max 218 Mln - Mean 83.9 Ac-ft 60,730

Water year 1955-56: Max 220 Min 0 Mean 97.0 Ac-ft 70,410

* Discharge measurement made on this day. 

Note. No gage-height record Mar. 16 to Apr. 4; discharge estimated.
196 WEISER RIVER BASIN

Mann Creek near Weiser, Idaho

Location. Lat 44°23'30", long 116°53'40", in NE£ sec. 11, T. 12 N., R. 5 W., on left 

bank 2 miles upstream from U. S. Highway 95, 10 miles northeast of Weiser, and 

11-j miles upstream from mouth.

Drainage area. 56 sq mi, approximately.

Records available . March 1911 to September 1913, July to November 1920, April 1937 to 

September 1956.

Gage.--Staff gage read twice daily. Altitude of gage is 2,830 ft (from topographic map). 

Prior to Feb. 9, 1951, staff gages at sites within 1,000 ft upstream at different 

daturns.

Average discharge.--21 years (1911-13, 1937-56), 41.2 cfs (29,830 acre-ft per year).

Extremes.--Maximum discharge during year, 550 cfs Dec. 22 (gage height, 3.00 ft, from 

graph based on gage readings); minimum observed, 0.8 cfs Aug. 31; minimum gage height 

0.74 ft Oct. 2.

1911-13, 1920, 1937-56: Maximum discharge, 1,540 cfs Mar. 27, 1940 (gage height, 

5.45 ft, from floodraark, site and datum then in use), from rating curve extended above 

slope-area determination at gage height 4.21 ft; no flow Aug. 18 to Sept. 22, 1937. 

July 31 to Sept. 13, 1939.

Remarks.--Records fair. One diversion above station for irrigation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

16

19

20

21 

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

2.5

27T

2.7

2.7

3.7

3.5

3.3

3.0

3.0

3.1

4.6

4 .1

3.7

3.7

3.1

3.1

3.1

3.0

3.3

3.3

3.3

3.5

3.3

3.7

3.3

3.7

*4.6

4.6

4.6

4.6

4.6

109.0

3.52

216

Nov.

4.6

3.3

3.3

4.6

5.4

5.0

5.0

5.0

4.6

5.0

5.2

5.4

b4.3

b3.5

b5.0

b3.3

b3.6

b4.0

4.6

9.8

H.S

8.1

7.8

6.5

6.2

8.1

9.5

8.4

8.8

174.5

5.82

346

Dec.

10

9.5

8.1

5.2

b5.0

*b7.5

8.4

5.9

7.6

7.8

7.6

7.8

b7 .O

b6.0

b7.5

b8.5

b9.0

9.8

17

108

142 

403

T3T

109

76

67

65

*65

b62

*b55

b44

1,547.2

49.9

3,070

Jan.

28

26

23

22

22

20

20

20

18

18

17

22

27

24

166

180

TOT

65

55

47

*41 

46

65

43

54

b43

b40

b36

b34

b30

b26

1,379

44.5

2,740

Feb.

b22

b25

b28

b30

b32

b32

b32

. b29

b28

b28

b28

28

30

29

17

b!3

b!5

b!6

b!6

b!8

b20 

*b27

blOO

^45

30

28

27

26

29 -

828

28.6

1,640

Mar.

28

52

65

50

44

35

30

34

32

35

38

34

31

32

32

44

52

74

134

99

104 

126

209

339

32T

253

174

131

121

118

111

2,982

96.2

5,910

Apr.

ITS' 113

113

*136

145

123

118

113

128

190

209

232

232

267

295

373

295

253

264

264

267 

260

253

*226

206

165

162

145

123

118

5,901

197

11,700

May

113

108

108

116

158

110

113

110

108

103

93

81

79

74

70

70

74

79

81

84

74

*68

66

57

53

46

61

48

43

41

38

2,477

79.9

4,910

June

35

32

30

31

32

28

27

27

24

24

24

26

26

23

26

33

27

24

23

23

17 

*15

14

14

14

12

T2

15

15

12

685

22.8

1,360

July

12

12

15

T5

15

14

12

12

12

9.7

9.7

9.7

12

9.7

9.7

9.7

8.1

7.4

7.4

6.2

5.6 

5.6

5.0

5.0

5.0

*5.0

4.5

S75

5.6

4.5

4.5

275.4

8.88

546

Aug.

4.5

3.6

4.5

4.5

4.5

4.5

4.5

3.6

3.2

2.8

2.8

2.8

2.8

2.2

2.2

2.2

1.7

1.5

1.3

1.3

1.3 

1.3

1.3

1.3

2.8

*5.0

6.8

576

5.6

1.3

1.0

94.3

3.04

187

Sept.

1.1

175

2.8

2.8

2.2

2.2

2.2

2.2

2.2

2.2

2.0

2.0

1.7

1.5

1.7

1.7

1.5

1.5

1.7

2.0

1.7 

1.5

2.0

1.7

*2.0

1.7

2.0

3.2

3.6

775

61.1

2.04

121

Calendar year 1955 : Max 403 Mln 0.4 Mean 25.6 Ac-ft 18,510

Water year 1955-56 : Max 403 Min 1 .0 Mean 45.1 Ac-ft 32,750

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ICE
SNAKE RIVER MAIN STEM 197

Snake River at Weiser, Idaho

Location. lat 44°14'40", long 116°58'25", in sec. 31, T. 11 N., R. 5 W. , on right bank 

a third of a mile upstream from highway bridge at Weiser and a third of a mile downstream from Weiser River.

Drainage area. 69,200 sq mi, approximately.

Records available. October 1910 to September 1956. Monthly discharge only for some periods, published in WSP 1317. Fragmentary gage-height record obtained by U. S. Weather 

Bureau since 1895.

flage. Water-stage recorder. Datum of gage is 2,086.64 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Oct. 1, 1914, staff gage at site 

half a mile downstream at different datum. Oct. 1, 1914, to Oct. 11, 1933, staff 

gage at present site and datum.

Extremes. Maximum discharge during year, 56,400 cfs June 6 (gage height, 11.28 ft); minimum, 9,940 cfs Nov. 29 (gage height, 3.08 ft).

1910-56: Maximum discharge, 84,500 cfs Apr. 29, 1952 (gage height, 14.67 ft); minimum observed, 5,100 cfs Aug. 5, 1924 (gage height, 1.35 ft).

Flood of Mar. 3, 1910, reached a stage of 15.7 ft on old U. S. Weather Bureau gage 

(discharge, about 100,000 cfs). Flood of June 1894 was considerably higher.

Remarks. Records excellent except those for periods of incomplete or no gage-height 

record, which are good. Flow regulated by many reservoirs above station. Diurnal 

fluctuation caused by Swan Falls powerplant. Diversions for irrigation of about 

2,456,000 acres above station (1946 determination).

Revisions (water years). WSP 1317: 1918.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, In cubic feet per second) 

(Shifting-control method used Sept. 21-30)

3.0 

4.0 

5.0 

6.0

9,700

13, 600

17,900

22,900

7.0

8.0

10.0

12.0

28,500

34,500

47,400

61,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Va.y

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

13,400

12,900

12,500

12,400

13,700

12,700

13,200

12,500

13,000

12,900

13,600

15, 200

14,800

16,000

16,900

15,800

12,100

12,200

14,200

12,200

13,100

14,500

14,600

13,400

11.900

*12,900

13,100

14,800

14,800

14,700

14,200

424,200

13,680

841,400

Nov.

12,800

14,400

12,000

13,200

13,800

15.200

14 500

12,800

15,000

12,500

13,200

13,900

12,900

12,900

11,300

13,600

13,800

12,500

12,300

12,400

14,200

13,600

14,800

15,100

13,800

11,500

13,200

11,400

10,800

12, TOO

396,100

13,200

785,700

Dec.

14,600

15,000

14,700

13,000

13,200

»1 1.400

12,600

12,900

13,800

13,700

12,400

12,700

13,200

14,800

13,800

14, 300

14,800

13,700

11,400

18,300

22,500

*31,300

49.000

* 48, 200

35,000

27,400

25 , 300

23, 400

22,400

22,500

22 , 200

603,500

19,470

*1,197

Jan.

21,000

18,000

14, 400

14,700

18,800

18,800

18,800

17,500

15,000

14,000

17,800

15,800

12.600

14,800

18,100

27.200

24,500

24, 600

24,500

24,000

*22,600

21,600

23,800

22,500

23,000

21,900

21,400

22,200

21,900

21,400

16,400

613, 600

19,790

*1,217

Feb.

17,200

17,700

18,300

18,400

18,500

17,000

14.500

16,300

16,400

18,200

20,700

21 , 200

21,200

23,100

21 , 800

21,000

21,200

21,400

22,100

20,300

18,900

26,000

28, 600

*26,800

23,300

^^,^oo

21,000

20,900

23,300

598,000

20,620

*1,186

Mar.

25.000

23,800

26,800

27,500

27,100

24, 600

24,500

24,800

25,100

26,100

25,600

25,400

24, 700

24,400

25,800

26,300

23,900

25,500

24,700

24,400

28,900

31,000

32,600

33,300

36,800

39,600

40.900

40,100

36,600

36,100

35,800

895,700

28,890

*1,777

Apr.

35,800

37,400

38,300

58,400

37,800

*36, 700

35,300

34,100

33,300

32,300

35,700

32,900

35,100

50.800

32,000

54, 100

55,700

33, 300

32,600

33,900

33,100

33,500

35,700

55,000

33,800

32,800

32,300

32,800

35, 200

37,300

*1,027

34,230

*2,037

May

36,100

36,200

35,300

35,800

57,100

57,200

37,100

37,800

39,500

59,200

37,700

38,000

36,400

35,100

*53,500

32,700

52,000

55,100

54,200

33,800

34,500

50,200

50,400

31,900

32, 700

32,300

37,000

40,800

59,400

40,300

47.600

tt,114.9

35,960

*2,211

June

51,200

*52,600

52,000

51,200

51,100

55,400

55,400

50,300

50,300

49,100

48,700

44,600

37 , 200

33,600

34, 900

36,700

36,400

35,200

33,700

26,700

*29,600

31,200

33, 700

32,200

27,600

24, 200

20,500

19,200

16,500

16,300

tl,135.5

57,840

iZ,252

July

15,400

15.500

13,300

12,300

11,700

11,300

12,000

12,800

11,900

11,000

11 , 500

10 , 900

11 , 400

10.500

10,500

10,600

10,500

10,700

10,400

10,800

11,000

11,500

11,100

*11,100

11,400

11,100

11,000

11,600

11,500

11,600

11,700

559,200

11,590

712,500

Aug.

1 1 , 200

12,300

12,400

12,300

12,100

12,100

11,900

11,900

11,900

12,200

12,500

12,100

11,900

11,300

12,900

12,300

12,800

12,400

11,500

10,900

10,600

11,300

12,400

12,800

11 , 500

11 , 200

*11 , 200

12,100

15,100

15,200

12,700

372,600

12,020

759,000

Sept.

13,100

13,200

12,500

12,700

12,500

12,500

11.700

13,600

15,000

12,200

11,800

13, 200

12,700

13,900

14, 700

14, 200

13,700

15,000

15,600

13,600

14,100

14,000

14,400

14,100

*12,900

14,400

14,400

14,600

14,500

15,100

403,500

13,450

800,500

Calendar year 1955: Max 49,000 Min 9,260 Mean 14,040 Ac-ft 10,160,000

Water year 1955-56: Max 55,400 Min 10,300 Mean 21,700 Ac-ft 15,760,000

* Discharge measurement made on this day.

* Expressed in thousands.

Note. Discharge for periods of incomplete or no gage-height record Dee. 22-24, Jan. 14, 22-25, 

Feb. 21-24, Apr. 18 to May 14 computed from graph based on once-daily telemark readings and records 

for station at Oxbow.
198 BURNT RIVER BASIN 

Unity Reservoir near Unity, Oreg.

Location. Lat 44°30'20", long 118°11'00", in SWfcSEi, sec. 21, T. 12 S., R. 37 E., at 

Unity Dam on Burnt River, 500 ft downstream from Job Creek, half a mile downstream 

from confluence of North, Middle, and South Porks of Burnt River, and 4-| miles north 

of Unity.

Drainage area. 309 sq mi.

Records available. March 1938 to September 1956.

Gage. Staff gage above elevation 3,803.3 ft, reference marks for lower readings; gage 

read once daily. Datum of gage is at mean sea level. Bureau of Reclamation benchmark 

(to convert elevations to datum of 1929, add 0.12 ft). Prior to Nov. 4, 1941, reference mark or mercury pressure gage at same site and datum.

Extremes. Maximum contents during year, 25,220 acre-ft May 5-12, 18-28 (elevation, 

3,820.0 ft); no contents Oct. 1-4.

1938-56: Maximum contents, 25,770 acre-ft Apr. 13, 1942 (elevation, 3,820.6 ft); 

no contents Sept. 5 to Oct. 4, 1955.

Remarks. Reservoir is formed by earth-fill dam with concrete spillway and outlet works, 

completed by Bureau of Reclamation in 1937; storage began Feb. 19, 1938. Capacity, 

25,220 acre-ft between elevations 3,776.5 ft (bottom of outlet gates) and 3,820.0 ft 

(top of radial gates on spillway when closed). Dead storage, 600 acre-ft below 

elevation 3,776.5 ft. Records given herein represent usable contents. Water used for 

irrigation in Burnt River Irrigation District near Hereford and Bridgeport. Contents 

computed from capacity table based on surveys by Bureau of Reclamation.

Month-end elevation and usable contents, water year October 1955 to September 1956

Date

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

Calendar year 1955. ............

Water year 1955-56. ............

Klevatlon 

(feet)

3,803.2

-

-

Contents 

(acre-feet)

0

870

1,890

11,700

-

12,440

18,260

24,560

24,850

7,750

3,650

-

Change In contents 

(acre-feet)

_

+870

+1,020

+9,810

+9,180

+740

+520

+5,300

+6, 300

+290

-4,680

-6,050

-6,370

-4, 100

+3, 650

Note. Gage read In afternoon.
BURNT RIVER BASIN 199

Burnt River near Hereford, Oreg.

Location. Lat 44?30'20", long 118°10 I 50", in SE£ sec. 21, T. 12 S., R. 37 E., on left 

bank at entrance to canyon, 1,250 ft downstream from Unity Dam, 0.3 mile upstream 

from Van Cleve ditch, 5 miles upstream from Camp Creek, and 7 miles west of Hereford.

Drainage area. 309 sq mi.

Records available. March to September 1915, April to September 1916, October 1928 to 

September 1^56. Monthly discharge only for some periods, published in WSP 1317.

gage. Water-stage recorder. Datum of gage is 3,756.75 ft above mean sea level, datum of 

~^929, supplementary adjustment of 1947. Mar. 16, 1915, to Sept. 4, 1916, staff gage 

at site 2 miles downstream at different datum. Oct. 22, 1928, to June 28, 1932, waterstage recorder at site half a mile downstream at different datum. June 29, 1932, to 

Sept. 16, 1937, water-stage recorder at site 300 ft upstream at different datum. 

Sept. 17, 1937, to Sept. 30, 1943, water-stage recorder at present site at datum 3.29 ft 

higher.

Average discharge. 28 years (1928-56), 80.5 cfs (58,280 acre-ft per year).

Extremes. Maximum discharge during year, 1,110 cfs Apr. 13 (gage height, 5.43 ft); minimum, 0.4 cfs Nov. 4-16.

1915-16, 1928-56: Maximum discharge, 2,220 cfs Apr. 17, 1943 (gage height, 7.35 ft, 

present datum), caused by opening of automatic spillway gates, from rating curve extended above 1,300 cfs by logarithmic plotting; maximum gage height, 7.85 ft Apr. 16, 

1943, present datum, just before concrete control washed out; no flow at times; minimum discharge before construction of Unity Reservoir Dam, 1.6 cfs Aug. 31, 1935.

Remarks. Records good. Diversions for irrigation of about 8,700 acres above station. 

Eldorado ditch diverts as much as 34 cfs from several tributaries above station for 

irrigation in Willow Creek basin. A transmountain diversion from headwaters of John 

Day River delivers 12 cfs to North Pork Burnt River for irrigation. Plow regulated by 

Unity Reservoir (see preceding page) and partly regulated by reservoir (capacity about 

700 acre-ft) on South Pork Burnt River, 3 miles above mouth.

Revisions (water years) . WSP 903: 1939. WSP 1397: 1916, 1930, 1933(M).

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, In cubic feet per second)

Oct. 1 to Nov. 16 

0.4

Nov. 17 to Sept. 30

0.9

1.0

1.1

1.2

1.3

1.7 

3.3 

5.6

1.1 

1.3 

1.5 

1.7 

2.0

2.0

6.0

12

20

38

2.5 

3.0 

3.5 

4.0 

5.0

150

255

400

850

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.8

278

2.8

2.S

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.7

2.7

2.7

2.7

2.7

2.5

2.5

2.3

2.3

2.3

2.2

2.2

*2.2

2.2

2.0 276"

80.2

2.59

159

Nov.

1.0

.6

.5

-u4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

4.5

9.1

9.1

9.1

9.1

9.1

9.1

9.1

9.4

¥74

9.4

5.8

3.0

3.2

3.2

118.5

3.95

235

Dec.

3.2

372

3.2

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

*3.

3.

3.

3.

3.

3.

3.4

3.6

3.8

3.8

3.8

.8

.0

.0

.0

.0

.0

108.2

3.49

215

Jan.

6.8

10

10

9.4

9.4

11

18

30

38

44

51

58

63

65

73

78

89

102

105

104

102

105

106

155

*100

98

91

86

84

84 

83

2,018.6

65.1

4,000

Feb.

78

76

74

74

76

77

78

77

74

72

71

73

74

76

76

70

69

70

72

73

78

91

109

117

114

110

105

100

100

------

2,404

82.9

4,770

Mar.

117

T54

178

196

196

*194

190

206

220

220

218

216

214

214

212

212

238

260

260

262

265

272

275

286

301

316

316

361

382

382 

382

7,715

249

15,300

Apr.

379

385

382

379

379

376

370

*364

382

408

412

456

605

600

615

655

*685

690

690

695

710

720

735

735

720

548

385

346

346

504

15,456

515

30, 660

May

250

238

218

248

304

331

379

428

488

488

488

484

480

336

224

208

168

150

162

192

200

206

206

200

210

204

190

186

*184

182

164

8,396

271

16,650

June

148

144

170

135

136

140

146

148

152

*140

160

160

158

140

132

140

135

148

138

132

129

130

140

132

124

117

109

TI6

109

123

4,125

138

8,180

July

 117

116

120

99

91

84

88

86

x 138

135

96

91

96

94

102

116

122

*123

110

102

95

119

128

123

114

110

106

101

102

107

109

3,340

108

6,620

Aug.

101

95

88

101

114

113

112

*110

110

110

110

116

136

156

T56

140

120

132

141

140

136

136

136

135

134

130

129

129

117

110

3,802

123

7,540

Sept.

109

107

106

105

104

95

83

82

81

80

79

64

37

27

27

27

44

SO

62

61

60

60

58

58

58

58

58

58

58

58

2,044

68.1

4,050

Calendar year 1955: Max 153 Mln 0.1 Mean 35.2 Ac-ft 25,460

Water year 1955-56: Max 735 Mln 0.4 Mean 136 Ac-ft 98,380

Discharge measurement made on this day.
200 POWDER RIVER BASIN

Powder River near Baker, Oreg.

Location. Lat 44°39'20", long 117°52'30", In NEi sec. 36, T. 10 S., R. 39 E., on right 

bank 700 ft downstream from Stlces Gulch and 8| miles south of Baker.

Drainage area.--219 sq ml.

Records available. December 1903 to August 1914, June 1926 to September 1956. Published 

as "near Baker City" December 1903 to December 1905, and as "at Salisbury" January 

1906 to August 1914, June 1926 to September 1951. Monthly discharge only for some 

periods, published In WSP 1317.

f

.--Water-stage recorder and concrete bag-filled control. Datum of gage Is 

,632.31 ft above mean sea level, datum of 1929, supplementary adjustment of 1947. 

Dec. 20, 1903, to Feb. 29, 1912, staff gage at site 400 ft upstream at different datum. 

Mar. 1, 1912, to Aug. 1, 1914, and June 16, 1926, to Oct. 16, 1933, staff gage at site 

0.4 mile downstream at different datum.

Average discharge. 39 years (1904-13, 1926-56), 111 cfs (80,360 acre-ft per year).

Extremes.--Maximum discharge during year, 1,340 cfs May 24 (gage height, 6.19 ft); minimum, 7.2 cfs Oct. 1, 2 (gage height, 1.22 ft).

1903-14, 1926-56: Maximum discharge, 1,820 cfs Mar. 20, 1910 (gage height, 7.05 ft, 

site and datum then In use, from graph based on gage readings), from rating curve extended above 600 cfs; no flow Aug. 31, 1909, Sept. 7, 1931.

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

which are poor. Diversions above station for irrigation.

Revisions (water years). WSP 813: 1935. WSP 1093: Drainage area. WSP 1397: 

1929-31, 1940, 1942, 1949-50.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge. In cubic feet per second) 

(Backwater from beaver dam Sept. 26-30)

1904-13,

1.2 

1.4 

1.7 

2.0

Oct. 1 to May 24

6.2 2.5

21 3.0

56 4.0

104 6.0

200

316

600

1,260

1.1 

1.3 

1.5 

1.7

May 25 to Sept. 30 

6.0 2.0 104

Note. Same as 

preceding table 

above 2.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

7.8

7.8

7.8

8.4

9.0

9.0

9.0

9.0

9.0

11

12

12

12

12

13

13

12

12

12

11

11

10

9.6

9.0

9.0

9.6

9.0

*9.6

11

14

14

324.6

10.5

644

Nov.

18

*18

16

18

18

18

20

19

19

18

18

15

12

10

8.5

8

13

15

21

26

27

27

24

25

25

29

52

80

73

63

753.5

25.1

1,490

Dec.

57

53

48

47

45

45

43

40

44

45

45

40

35

30

*38

40

45

50

60

75

180

450

543

3TT

227

238

207

148

97

88

111

3,525

114

6,990

Jan.

108

99

95

93

83

78

76

76

69

69

67

67

66

62

81

142

T36" 144

131

133

117

111

108

70

*55

52

50

48

45

42

40

2,613

84.3

5,180

Feb.

35

40

50

55

65

62

60

56

54

50

55

58

60

60

55

45

40

45

60

80

100

120

100

90

80

76

74

72

72

1,869

64.4

3,710

Mar.

76

95

99

84

75

*72

70

65

62

60

60

58

60

70

81

95

126

176

229

297

348

382

483

678

867

918

657

525

*471

471

8,278

267

16,420

Apr.

411

358

323

318

348

338

342

*316

309

368

489

-708

729

732

771

798

*768

714

711

771

855

939

984

894

777

672

591

528

471

417

17,750

592

35,210

May

385

362

352

429

489

567

636

642

603

567

522

456

402

360

355

555

458

570

696

813

858

894

939

1.240

1,000

858

864

732

*678

681

711

19,432

627

38,540

June

755

665

609

585

498

420

550

314

506

*321

500

280

260

250

220

220

210

210

210

200

180

165

156

150

145

140

155

150

120

110

8,572

286

17,000

July

100

90

80

75

70

70

70

70

70

70

75

70

60

55

47

45

42

*40

59

39

59

54

51

27

26

25

26

28

51

27

25,

1,594

51.4

5,160

Aug.

24

27

28

27

27

26

26

*24

25

22

21

20

18

17

17

17

16

14

14

15

15

12

11

11

11

11

12

12

12

11 

*11

548

17.7

1,090

Sept.

11

To

9.6

9.6

9.6

9.2

9.2

9.6

9.2

8.9

9.2

9.2

9.2

9.6

9.6

9.2

8.5

8.9

9.2

9.6

9.6

9.6

9.6

9.6

9.6

9.6

9.6

9.6

9.6

9.6

284.1

9.47

564

Calendar year 1955: Max 543 Kin 3.6 Mean 63.0 Ac-ft 45,600

Water year 1955-56: Max 1,240 Min 7.3 Mean 179 Ac-ft 130,000

Peak discharge (base, 300 cfs).--Dec. 23 (l a.m.) 666 cfs (4.22 ft); Mar. 25 (9:50 p.m.) 1,090 cfs 

(5.57 ft); Apr. 25 (3 p.m.) 1,010 cfs (5.53 ft); May 7 (ll p.m.) 672 cfs (4.24 ft); May 24 (1:50 p.m.) 

1,540 cfs (6.19 ft).

* Discharge measurement made on this day.

Note.--No gage-height record Feb. 1, Z, 4, 6-8, 10, 11, 21-27, Mar. 5, June 11-22, June 24 to 

July 14, July 16, 17; discharge estimated on basis of weather records and records for station near 

Robinette. Stage-discharge relation affected by ice Nov. 11-16, Dec. 5, 6, 8, 10-22, Jan. 24-51, 

Feb. 5, 5, 9, 12-20, Mar. 6-14.
POWDER RIVER BASIN 201

Powder River near Roblnette , Oreg .

Location . Lat 44°46'10", long 117°04'10", In E| sec. 22, T. 9 S. , R. 46 E. , on left 

bank 2-£ miles northwest of Roblnette and 2| miles upstream from mouth.

Drainage area. 1,660 sq mi, approximately.

Records available . September 1928 to September 1956.

Gage . --Water-stage recorder. Datum of gage is 1,937.01 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Aug. 24, 1936, staff gage at site 

half a mile upstream at different datum. Aug. 24, 1936, to Oct. 31, 1948, staff gage 

at site 50 ft upstream at present datum.

Average discharge. 28 years, 528 cfs (382,300 acre-ft per year).

Extremes. Maximum discharge during year, 5,500 cfs May 27 (gage height, 6.38 ft); minimum, 85 cfs Nov. 15, 16 (gage height, 0.23 ft).

1928-56: Maximum discharge, that of May 27, 1956; minimum observed, 18 cfs 

Sept. 2-10, 1931.

Remarks. Records excellent except those for periods of ice effect or shifting control, 

which are good. Many diversions above station for irrigation; none below. One canal 

with capacity of about 5 cfs diverts around station on left bank. Flow partly regulated by several reservoirs, the largest being Thief Valley Reservoir near North Powder (capacity, 17,400 acre-ft).

Revisions (water years). --WSP 1217: Drainage area. WSP 1397: 1929, 1936, 1949.

Rating tables, water year 1955-56, except periods of ice effect or shifting 

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

Oct. 1 to May 26 May 27 to Sept. 30

0.2 80

.4 115

.9 245

1.5 485

2.0 

3.0 

4.0 

6.0

760

1,540

2,520

5,300

1.3 

2.0

115

210

400

790

3.0 1,540

4.0 2,500

6.0 4,960

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

TotaJ

Mean

Ac- ft

Oct.

96

96

94

96

107

119

111

113

111

168

206

T75

169

169

162

152

148

143

132

132

128

117

117

117

117

121

121

126

134

159 

162

4,118

133

8,170

Nov.

157

*148

145

159

167

154

154

152

177

342

287

215

180

b!50

128

*bllO

b!40

b!70

248

248

256

224

2O9

197

252

284

319

319

301

294

6,286

210

12,470

Dec.

304

301

290

276

262

262

280

245

270

256

290

319

294

*177

b!60

256

276

280

363

700

865

1.270

*1,120

760

688

823

872

634

462

580

694

14,629

472

29,020

Jan.

646

634

607

590

560

565

570

560

525

495

480

490

525

602

892

1.570

1,240

1,110

978

900

837

921

1,180

*956

718

580

575

510

530

510

391

22,047

711

43,730

Feb.

*319

294

367

431

444

440

472

449

422

422

422

436

440

426

400

294

327

347

367

426

607

"823 886

652

640

658

670

640

602

------

14,123

487

28,010

Mar.

618

851

1,040

1,070

*1,010

935

802

688

629

602

565

525

535

515

505

525

629

879

1,180

1,350

1,500

1,600

1,750

1,950

2,220

2.370

2,280

2,120

2,040

1,980

1,840

37,103

1,197

73,590

Apr.

1,700

1,580

1,480

1,420

1,410

1,350

1,310

1,270

1,290

1,390

1,590

1,900

2,101

2,180

2,440

3,120

2,860

*2,710

2,760

2,930

3,150

3,350

5,490

3,430

5,220

2,980

2,750

2,550

2,320

2,080

68,020

2,267

134,900

May

1,810

1,660

1,550

1,670

1,860

1,860

1,920

2,100

2,240

2,450

2,370

2,190

2,010

1,870

1,750

1,750

1,880

2,210

2,740

3,160

3,510

5,540

3,920

4,590

4,300

4,460

4.950

*4,480

4,470

4,240

4,270

87,530

2,824

175,600

June

4.200

3,780

3,720

5,570

3,090

2,750

2,360

2,140

2,170

2,220

2,050

1,850

1,770

1,640

1,630

1,640

1,570

1,540

1,570

1,590

1,440

1,550

1,280

1,140

1,120

1,020

1,020

1,020

934

796

57,950

1,932

114,900

July

688

634

592

540

540

525

555

550

550

550

622

658

604

598

495

450

576

340

512

316

552

524

288

*256

225

213

216

228

231

248 

244

13,220

426

26,220

Aug.

248

24O

234

208

205

192

192

182

188

182

172

158

165

158

158

142

155

135

142

142

142

131

125

129

140

172

205

215

198

198 

*202

5,429

175

10,770

Sept.

198

180

178

182

188

182

172

162

152

148

140

148

150

142

142

142

138

133

140

145

148

150

158

162

160

155

158

160

155

158

4,726

158

9,370

Calendar year 1955: Max 1,580 Mln 71 Mean 325 Ac-ft 235,200

Water year 1955-56: Max 4,950 Mln 94 Mean 916 Ac-ft 664,800

Peak discharge (base. 1.100 efs).--Dee. 22 (5 p.m.) 1,480 cfs (2.93 ft); Jan. 15 (11:30 p.m.) 

1,580 cfs (3.04 ft); Jan. 23 (9 a.m.) 1,220 cfs (2.61 ft); Feb. 22 (10 p.m.) 1,610 cfs (5.08 ft); 

Mar. 26 (5 a.m.) 2,430 cfs (3.92 ft): Apr. 23 (3 a.m.) 3,570 cfs (4.87 ft); May 10 (11 a.m. to 

1 p.m.) 2,450 cfs (3.94 ft); May 27 (3 a.m.) 5,500 cfs (6.38 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Hote. Shifting-control method used May 22-26, Sept. 27-30.

467239 O-58 14
202 SNAKE RIVER MAIN STEM

Snake River at Oxbow, Oreg.

Location. Lat 44°57', long 116 0 51', in NWi sec. 16, T. 7 S., R. 48 E., on left bank at 

Oxbow, five-eighths of a mile upstream from intake of diversion tunnel for former 

Oxbow powerplant and 2-| miles upstream from Indian Creek.

Drainage area. 72,800 sq mi, approximately. 

Records available.--May 1923 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,696.71 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Dec. 20, 1923, staff gage at 

same site and datum.

Extremes. Maximum discharge during year, 58,900 cfs June 6 (gage height, 17.90 ft); minimum, 10,400 cfs Nov. 30 (gage height, 8.19 ft).

1923-56: Maximum discharge, 89,700 cfs Apr. 28, 1952 (gage height, 23.10 ft); maximum gage height, about 29 ft (ice jam), from floodmark, sometime during period 

Jan. 17-27, 1949; minimum discharge, 4,890 cfs Aug. 6, 1924 (gage height, 6.30 ft).

Remarks.--Records excellent. Plow regulated by many reservoirs above station. Diurnal 

fluctuation caused by Swan Palls powerplant. Diversions for irrigation (1946 determination) of about 2,594,000 acres above station.

Revisions (water years). WSP 1347: 1925.

Rating table, water year 1955-56 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Jan. 22 to Mar. 24)

8.2

9.0

10.0

12.0

10,500

13,100

16,900

25,900

14.0

16.0

18.0

36,500

47,700

59,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

13,600

13,500

13,000

12,300

13,300

13,400

13,100

13,100

13,000

12,900

13,500 

14,400

15,300

15,300

16,500

17,800

14,400

12.100

13,000

13,800

12,500

13,600

14,900

14,400

*13,200

12,400

13,600

13,800

15,400

15,200

15,200

431,500

13,920

855,900

Nov.

13, 900

14,000

13,800

12,600

13,900

14,600

15,700

14,100

14,200

14,600

13,200 

13,900

13,600

13,500

12,100

12,600

14,200

13,800

12,700

12,900

13,800

14,600

14,600

15,500

15,300

13, 600

12,800

13,200

11.400

12,100

------

410,800

13,690

814,800

Dec.

13,800

15,700

15, 600

14,600

13,800

12,800

*12.700

12,900

13,900

14,300

13,600 

12,800

13,300

14,400

14,700

14,300

14,900

15, 300

12,800

15,200

24,800

30,300

43,800

51.200

41,200

32,100

27,400

26,400

23,600

23,200

23,600

629,000

20,290

*1,248

Jan.

23,100

20,800

16,900

14,600

17,900

19,700

20,000

19,900

*16,600

15,100

16, 900 

18,300

14,900

14,000

18,500

24,800

28,500

26,600

26,600

25,800

25,200

23,200

24,400

24,800

24,200

23, 100

22,300

22,700

22,700

22,600

20,000

654,700

21,120

*1,299

Feb.

16,600

17,600

18,800

18, 900

19,200

18,800

15.600

16,100

16,800

17,200

20,600 

21,900

21,400

23,200

22,800

21,200

21,600

21,700

22,500

22,300

19,000

23,700

28,400

51.000

*25,600

24,400

23,100

21,800

23,600

-

------

615,400

21,220

*1,221

Mar.

24.000

24,700

27,000

29,000

28, 900

27,200

25, 200

26,000

26,100

26,600

26,800 

26,400

25, 800

25,300

25,800

26,900

26,700

26,000

26,800

26,100

29,700

32,600

35,300

36,500

39,000

41,800

44.600

43,600

41,000

39,000

39,000

949,400

30,630

tl,883

Apr.

38,80~0

39,400

40,100

40, 900

40,400

39,700

*38,800

36,900

36,000

36,300

55.200 

36,800

36, 900

35,800

35,600

37,700

40,000

38,800

37,200

37,900

38,300

38,300

39,100

38,000

37,900

38,000

37,200

36,800

36,700

38 , 000

*1,137.5

37,920

*2,256

May

39,400

38,400

38,000

38,000

38,800

40,400

39,800

41,000

41,200

42,000

41,500 

40,800

40,000

38, 200

37,000

*35,600

55,200

35,500

57,200

57,700

38,500

56,700

55,400

35, 900

57,600

57,600

40, 000

44,000

45,000

43,300

48,100

*1,217.4

39,270

$2,415

June

53,600

*56,600

55,500

55,100

53,900

55,800

57,500

53,200

52,800

51,900

50,600 

49,600

42,700

36,400

37,400

38, 000

39,400

37,900

37,800

32,400

30,200

32,800

35,000

35,200

32,200

28,100

24,600

21,700

20,400

17,500

------

*1,225.8

40,860

*2,431

July

17,100

*16,700

15,700

15, 800

15,000

12,400

12,400

13,000

13,600

12,200

11,800 

12,200

11,800

11,700

10, 900

11,100

11,000

10, 900

11,000

10, 800

11,300

11,600

11,700

11,400

11,700

11,500

11,400

*11,500

12,000

11,800

11,900

380, 900

12,290

755,500

Aug.

11,600

11,800

12,600

12,500

12,400

12,200

12,200

12,200

12,100

12,100

12,400 

12,600

12,000

11, 900

12,000

12,400

12,400

12, 900

11,900

11,300

10. 800

10, 800

11,800

12,800

12,400

*11,600

11,500

12,000

12,800

15.600

13^400

377,000

12,160

747,800

Sept.

13, 300

13, 500

13, 200

12,700

12, 900

12,800

12,700

12,600

13,500

13,000

12.200 

12,700

13,000

13,300

14,500

14,6OO

14, 100

13,500

13,500

13, 600

14,000

14,100

14,300

14,600

13,600

 13,500

14. 800

14,700

14,800

14,800

------

408,400

13,610

810,000

Calendar year 1955: Max 51,200 Min 9,480 Mean 14,530 Ac-ft 10,520,000

Water year 1955-56: Max 57,500 Min 10,800 Mean 23,050 Ac-ft 16,740,000

* Discharge measurement made on this day.

* Expressed in thousands.
SNAKE RIVER MAIN STEM 203

Snake River near Joseph, Idaho

Location. Lat 45°49', long 116 0 45', in SW£ sec. 18, T. 4 N., R. 49 E., on left bank 

at China Gulch, a quarter of a mile downstream from Mountain Sheep dam site, 0.7 mile 

upstream from Imnaha River, 0.9 mile downstream from Divide Creek, 13 miles west of 

Joseph, 22 miles west of Whitebird, and at mile 53.2 from Lewiston.

Drainage area. 73.800 sq mi, approximately. 

Records available. April 1955 to September 1956.

Gage. Water-stage recorder. Datum of gage is 940.48 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947.

Extremes.--Maximum discharge during year, 64,700 cfs June 7 (gage height, 18.65 ft); minimum, 10,600 cfs Aug. 22 (gage height, 1.70 ft).

1955-56: Maximum discharge, that of June 7, 1956;-minimum, 9,940 cfs Aug. 19, 1955 

(gage height, 1.29 ft).

Remarks. Records excellent except those for periods of backwater from Imnaha River and 

those for periods of no gage-height record, which are good. Flow regulated by many 

reservoirs above station. Diurnal fluctuation caused by Swan Falls powerplant. Diversions for irrigation (1946 determination) of about 2,613,000 acres above station.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

13, 700 

13, 700

13,400

13, 000

12,600

14,000

13, 100

13,500

12,800

13,700

13,700

14,000

15, 700

15,400

16,400

17,200 

17,000 

12,900

12.500

14,500

13,000

13,400

14,600

15, 100

*14, 100

12,600

13,000

13,500

14,800

15,400

15,300

437,400

14,110

867,600

Nov.

15,200 

13,200

15, 000

12,800

13,600

14,300

15,600

15, 200

13,400

15, 600

13,800

13,700

14,300

13,400

13,500

11.500 

13,900 

14,400

15,400

15,100

15,800

15 , 000

14,600

15,600

15.900

15,000

15,500

14, 600

13,000

11,700

421,200

14,040

835,400

Dec.

13,900 

15,700

16,300

15,900

14,200

*14,400

12,500

13,600

15,600

14,400

14,600

13,500

13,700

13,800

15,400

15,000 

15,100 

15,600

15,400

14,100

21,900

54,200

44,500

*56,700

a47,000

a58,000

aSO.OOO

a28,000

a26,000

a25, 000

a25,000

666,600

21,500

tl,522

Jan.

a25,000 

a25,000

20,000 aie.ooo

*16,200

20,400

20, 500

20,600

19,400

16,800

15,600

19,200

17,600

14.500

16.800

22, 600 

50,700 

27,700

27 , 600

27 , 100

26,500

25,100

24,700

27,100

25,100

25,100

23,900

23,400

25,900

25,700

22,800

688,400

22,210

tl,565

Feb.

18,200 

18,300

19,000

19,800

20,300

19,800

18,600

16.100

17,700

17,100

19,600

22,000

22,400

22,600

25,800

22,500 

21,800 

22,100

22,700

25,000

21,500

20, 900

28,400

50,700

28,100

24,900

24,500

22,700

25, 000

652, 100

21,800

*1,254

Mar.

24,700 

25,000

26,600

29,400

29,700

28,700

26,300

26,400

, 26,500

26,700

27,400

26,700

26,600

25,800

25,700

27,200 

27.600 

25. 800

28,000

27,800

28, 500

55.000

35.600

38, 400

40,700

45,000

46.500

*45,900

44,300

40,400

39, 900

976,600

51 , 500

*1,957

Apr.

59,400 

59,500

40, 400

41,000

41,000

4'0, 500

59.200

57,500

56,500

56,100

55.800

57,800

57 , 800

57 , 900

56,400

59,700 

45. 500 

42, 600

59, 800

59,800

41,200

41,000

41,900

41,500

59,800

59,900

58, 900

57,900

57,600

57,600

ft, 178. 9

59,300

*2,358

May

40, 800 

58,900

58,900

58,500

59,800

41,500

41,300

42, 100

42,800

44,200

43,800

42,000

41,800

39,600

58,500

56, 500 

55.900 

56,000

58,500

40,700

40,700

41,600

57 , 400

59,200

41,200

41,100

45,100

47,500

*50. 100

47,900

47,900

*1,279

41,260

*2, 537

June

a54,000 

a58,000

a60,000

a59,000

58, 600

a58, 000

62.800

*57,700

a56,000

a54,000

52,900

a52,000

a47,000

a41,000

a39,000

a40,000 

a41,000 

a40,000

39,100

37,400

30, 900

33,000

34,400

36,300

34 , 600

50,000

26,900

25,600

22,200

19.700

*1, 299.1

45,500

*2,577

July

18.800 

17,700

17,800

15,700

14,500

15,800

15,400

15,700

14,500

15,900

15,000

13,200

12,600

15,500

11 , 800

11,700 

11,700 

11,500

11,500

11.400

11,500

11,800

12,100

11,800

11,800

*12,100

11,700

11,600

12,200

12,200

12,200

406,300

15,110

805,900

Aug.

12,500 

11,700

12, 800

12,900

12 , 800

12,600

12,700

12,400

12,400

12,400

12^400

13,000

12, 600

12,100

11,700

15 , 000 

12,500 

12,900

12,900

11 , 600

11,200

10.700

11,400

12, 500

13,200

12,000

12,000

11,800

12,500

15,500

15.800

384,300

12,400

762,200

Sept.

13,400 

13,600

15,600

12,800

15,000

*13,000

12,900

12,500

15,700

15,400

12, 800

12.000

13,500

15, 000

14,000

15.000 

14,500 

14,000

15,500

15,800

15,800

14,500

14,200

14 , 600

14,600

15,400

14,200

14,900

15,000

14, 900

411,500

15,720

816,200

Calendar year 1955: Max - Mln - Mean - Ac-ft

Water year 1955-56: Max 62,800 Mln 10,700 Mean 23,990 Ac-ft 17,420,000

* Discharge measurement made on this day.

* Expressed in thousands.

a No gage-height record; discharge estimated on basis of weather records and records for station 

at Oxbow.

Note. Stage-discharge relation affected by backwater from Imnaha River Oct. 10, 11, Nov. 11, 

Nov. 17 to Dec. 12, Dec. 20 to Jan. 25, Mar. 19 to July 25.
204 IMNAHA RIVER BASIN

Imnaha River at Imnaha, Oreg.

Location. Lat 45°34', long 116°50', in SW£ sec. 16, T. 1 N., R. 48 E., on left bank at 

Imnaha, three-eigh,ths of a mile downstream from Sheep Creek.

Drainage area. 640 sq mi, approximately. 

Records available. June 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,941.14 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Aug. 6, 1934, staff gage at 

site a quarter of a mile upstream at different datum.

Average discharge. 28 years, 484 cfs (350,400 acre-ft per year).

Extremes.--Maximum discharge during year, 4,650 cfs May 27 (gage height, 6.05 ft); minimum, 90 cfs Dec. 14 (gage height, 1.66 ft).

1928-56: Maximum discharge, 5,700 cfs May 28, 1948 (gage height, 7.06 ft); minimum observed, 16 cfs Nov. 22, 1931.

Remarks. Records excellent except those for period of shifting control, which are good, 

and those for periods of ice effect, which are fair. Diversions for irrigation of 

about 4,000 acres above station. Water is diverted above station from Sheep Creek and 

Little Sheep Creek to Orande Ronde River basin for irrigation of about 6,500 acres in 

Wallowa Valley.

Revisions (water years). WSP 883: 

1932(M), 1949.

1938. WSP 1217: Drainage area. WSP 1397: 1929,

Rating tables, water year 1955-56, except periods of Ice effect or shifting 

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

Oct. 1 to Dec. 21 Dec. 22 to Sept. 30

1.8 1ZO

2.0 170

2.5 350

3.0 615

3.5 935

4.0 1,390

1.8 135

2.3 275

3.0 580

3.5 930

4.0 1,390

5.0 2,810

6.0 4,560

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

128 

T28

128

132

150

142

138

135

132

549

334

228

207

197

188

179

173

168

*168

170

165

165

162

155

152

173

173

162

162

182

188

5,413

175

10,740

Nov.

179 

160

173

182

200

191

191

188

191

210

270

207

blSO

b!70

b!40

b200

b250

b300

318

558

310

274

260

256

252

256

265

252

252

256

6,869

229

13,620

Dec.

270 

263

252

221

221

*256

242

214

235

214

224

228

210

122

blip

b!40

b!70

197

286

462

1,040

«2,74Q

2,300

1,390

1,040

946

1,210

1,050

794

668

682

18,397

593

36,490

Jan.

616 

545

495

470

440

414

406

394

366

362

346

330

354

350

390

450

*450

455

440

435

418

406

402

374

303

289

b250

b210

b230

blSO

b!60

11,730

378

23,270

Feb.

bieo

b2Tb~

b250

306

286

289

265

230

233

249

249

255

242

233

215

blSO

b200

b220

245

230

262

268

268

245

239

233

233

230

230

6,975

241

13,830

Mar.

233 

*245

268

265

255

249

249

265

255

245

233

204

268

242

233

245

268

350

555

634

731

898

1,180

1,690

1.900

1,840

1,490

1,170

1,050

1,070

1,110

19,890

642

39,450

Apr.

994 

858

773

738

731

703

TT7

710

794

1,070

*1,400

1,630

1,870

2,070

2,240

2,300

2,080

1,980

2,070

2,320

2,740

3,200

5,220

2,910

2,480

2,320

2,270

2,100

1,840

1,680

52,808

1,760

104,700

May

1,560 

1,540

1,580

1,800

1,950

1,930

1,930

2,120

2,140

2,140

2,060

1,820

1,620

1,470

1,460

1,620

1,930

2,320

2,660

3,030

3,000

2,980

*3,130

*3,700

2,910

2,840

5, 980

3,240

3,150

3,080

*3, 120

73,810

2,381

146,400

June

5,200

2,610

2,380

2,420

2,070

1,780

1,580

1,510

1,700

1,930

1,900

1,740

1,720

1,700

1,900

1,980

1,830

1,730

1,780

1,910

1,720

1,600

1,570

1,460

1,390

1,320

1,370

1,470

1,400

1,200

53,870

1,796

106,800

July

1,070 

1,000

930

882

882

*874

882

866

850

882

986

874

874

850

724

654

610

580

560

540

520

490

455

435

418

398

382

374

374

354

33i

20, 904

674

41,460

Aug.

322

314

303

292

289

278

275

268

258

258

245

242

236

227

230

227

*215

209

204

198

193

188

185

190

196

278

338

286

242

230

221

7,637

246

15,150

Sept.

212 

204

198

196

193

190

182

180

175

172

170

170

170

168

162

158

152

150

152

152

155

158

168

170

*172

170

175

185

180

175

5,214

174

10,340

Calendar year 1955: Max 2,740 Min 67 Mean 468 Ac-ft 338,700

Water year 1955-56: Max 3,980 Min 110 Mean 775 Ao-ft 562,200

(9 p.m.) 3,320 cfs (5.30 ft): 

cfs (5.45 ft);

Peak discharge (base, 1,500 efs). Dec. 22

2,190 cfs (4.77 ft); Apr. 23 (5 a.m.) 3,490 cfs "(5.45 ft); May 10 (4 a.ra'.] 

May 24 (5 a.m.) 4,150 cfs (5.77 ft); May 27 (a a.m.) 4,650 Cfs (6.05 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Mar. 25 (9:3O p.m.) 

2,240 cfs (4.65 ft);
SALMON RIVER BASIN 205

Valley Creek at Stanley, Idaho

Location. la t 44°13, long 114°56', In sec. 3, T. 10 N., R. 13 E., on left bank a quarter 

of a mile upstream from mouth, three-eighths of a mile downstream from upper Stanley, 

and three-quarters of a mile upstream from lower Stanley.

Drainage area. 176 sq mi.

Records available.--December 1910 to April 1911 (gage heights only), May 1911 to October 

1913, May 1921 to September 1956. Monthly discharge only for some periods, published 

in WSP 1317.

Gage.--Water-stage recorder. Datum of gage is 6,221.81 ft above mean sea level, datum 

of 1929. Prior to May 28, 1911, staff gage at site a quarter of a mile upstream, and 

May 28, 1911, to Oct. 31, 1913, at site three-quarters of a mile upstream, at 

different datums. May 2, 1921, to Apr. 30, 1949, staff gage at present site and 

datum.

Average discharge. 37 years (1911-13, 1921-56), 197 cfs (142,600 acre-ft per year).

Extremes. Maximum discharge during year, 2,000 cfs May 24 (gage height, 3.92 ft); minimum , 66 cfs Nov. 2 (gage height, 0.87 ft).

1910-13 1921-56: Maximum discharge, that of May 24, 1956; minimum, 40 cfs 

(estimated) Nov. 17-30, 1929, Dec. 8-13, 1932.

Remarks.--Records good except those for periods of ice effect, which are fair. Diversion 

for irrigation of about 590 acres above station.

Revisions (water years). WSP 362: 1911-12.

Rating tables, water year 1955-56, except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Apr. 15 to May 10)

Oct. 1 to May 20 May 21 to Sept. 30

0.9

1.0 

1.2 

1.5

66

79

114

191

2.0 

2.5 

3.0 

3.3

386

648

990

1,240

1.0 

1.2 

1.5 

2.0

95

134

216

428

2.5 

3.0 

4.0

720

1,110

2,090

Discharge, In cubic feet per second, water year October 1955 to September 1956

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

26

27

28

29

30

31

Total

Mean

Cf sm

Ac-ft

Oct.

99

97

97

95

99

99

101

99

97

99

118

108

103

101

99

97

95

95

103

103

99

103

99

110 

95

*103

97

95

146- 90

TT4

3,155

102

0.580

0.67

6,260

Nov.

95

82

101

116

127

95

92

89

95

134

114

82

89

101

b85

bBO

b80

b75

b!30

b200

b!90

b!70

b!50

b!40 

136

129

125

121

116

114

3,453

115

0.653

0.73

6,850

Dec.

*112

106

103

92

_B5

101

99

b90

b95

b90

b95

108

99

b85

b90

99

97

97

97

101

123

305

499

3S8 

320

295

272

231

211

201

198

4,964

160

0.909

1.05

9,850

Jan.

194

201

TTC

174

168

154

157

146

134

139

139

123

*129

123

132

141

132

125

123

129

125

123

123

118 

108

b!05

b!05

bllO

bllO

b!05

- b95.

4,166

134

0.761

0.88

8,260

Feb.

b90

bB5

b9U

blOO

bllO

b!05

b!05

blOO

b95

b98

blOO

blOO

blOO

blOO

b95

bB5

bB5

b90

b90

b90

*b90

b95

b95

b95 

b90

b90

b90

b90

b90

2,738

94.4

0.536

0.58

5,430

Mar.

b90

b95

95

95

b90

,b85 b90"

99

97

b90

b90

b90

95

b90

b90

b95

97

101

99

104

106

110

121

134 

159

139

132

121

125

125

127

3,356

105

0.597

0.69

6,460

Apr.

125

121

118

T23

*125

118

129

123

125

144

165

179

204

238

280

312

354

405

468

540

619

685

698

691 

667

607

602

613

*579

568

10,725

358

2.03

2.27

21,270

May

590

625

654

667

685

698

704

704

685

710

685

562

509

504

55T

625

723

852

998

1,180

1,350

1,430

1,560

1,900 

1,830

*1,720

1,840

1,620

1,500

*1,530

1,600

31,797

1,026

5.83

6.72

63,070

June

1,710

1.720

1,630

1,500

1,320

1,160

1,100

948

1,020

1,160

1,240

1,220

1,170

1,150

1,120

1,020

860

*769

755

839

832

734

776

734

714

694

654

707

741

700

30,737

1,025

5.82

6.49

60,970

July

624 593"

570

518

491

486

475

459

464

480

486

480

475

459

418

389

370

351

338

*333

338

333

307

299 

290

278

270

263

259

243

d$T_

12,381

399

2.27

2.62

24,560

Aug.

220 210"

204

194

188

194

197

185

174

182

172

163

158

156

163

161

153

146

144

141

139

136

*134

130

128

136

158

163

149

141 

134

5,050

163

0.926

1.07

10,020

Sept.

130

121

119

119

117

115

117

119

117

119

117

117

117

115

111

109

TIT

117

113

111

113

111

115

113 

113

111

117

134

T30

*124

3,512

117

0.665

0.74

6,970

Calendar year 1955; Max 908 M Ln 62 Mean 183 Cfsm 1.04 In. 14.09 Ac-ft 132,200

Water year 1955-56: Max 1,900 Mln 75 Mean 317 Cfsm 1.80 In. 24.51 Ac-ft 230,000

Peak discharge (base. 600 cfs) . Dec. 22 (9 p.m.) 679 cfs (2.50 ft); May 5 (9 p.m.) 880 cfs 

(2.73 ftj; May 24 (6 to 9:30 p.m.) 2,000 cfs (3.92 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
206 SALMON RIVER BASIN

Salmon River below Valley Creek, at Stanley, Idaho

Location. Lat 44°14' , long 114°55' , in SE^SEi;- sec. 34, T. 11 N. , R. 13 E. , on left bank 

three-quarters of a mile downstream from Valley Creek and l£ miles northeast of upper 

Stanley.

Drainage area. 535 sq mi.

Records available.--July 1925 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 6,190.32 ft above mean sea level, datum of 

1929. Prior to.Oct. 13, 1925, staff gage at same site and datum.

Average discharge.--31 years, 658 cfs (476,400 acre-ft per year).

Extremes.--Maximum discharge during year, 5,070 cfs May 27 (gage height, 4.62 ft); mini- 

 mum, 280 cfs Feb. 21.

1925-56: Maximum discharge, that of May 27, 1956; minimum, 100 cfs (estimated) 

Nov. 20-30, 1929.

Remarks. Records excellent except those for periods of ice effect or no gage-height

record, which are fair. Diversions above station for irrigation of about 6,000 acres.

Rating table, water year 1955-56, except periods of ice effect (gage 

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

0.9 

1.0 

1.2 

1.5

280

320

430

660

2.0 

3.0 

4.0 

4.6

1,170

2,450

4,020

5,040

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ibtal

Mean

Cfsm

Ac -ft

Oct.

345

340

340

335

355

340

345

345

345

345

382

360

360 

355

355

350

345

345

360

3bO

355

370

365

355

355

*365

365

370

365

465 

TTn 410

11,150

360

0.673

0.78

22,120

Nov.

4OO

365

400

424

430

382

382

370

376

437

424

370

355 

365

325

300 32"5

380

450

600

700

580

480

480

- 470

450

444

430

418

418

12,725

424

0.793

0.88

25,240

Dec.

412

406

388

365

325

380

380

360

390

370

380

400

380 

320

330

380

380

380

390

400

470

800

1.200

1,050

950

880

830

700

630

560

16,166

521

0.974

1.12

32,060

Jan.

560

580

b570

564

564

548

b530

516

479

508

*500

486

493 

465

500

540

516

493

486

486

479

465

472

451

400

380

40O

400

400

400

350

14,981

483

0.903

1.04

29,710

Feb.

330

355

380

400

410

400

380

360

350

370

390

400

390 

380

360

340

360

360

350

350

*350

350

350

345

350

350

350

350

350

10,565

364

0.680

0.73

20,960

Mar.

350

350

350

350

350

330

330

350

350

340

330

320

345 

330

320

320

320

330

330

340

340

350

370

390

430

"450 460

440

430

420

420

11 , 230

362

0.677

0.78

22,270

Apr.

420

410

400

400

*406

388

406

394

406

437

486

524

572 

628

714

80O

900

983

1,130

1,280

1,460

1,620

1,680

1.720

1, 686

1,650

1,650

*1,650

1,540

1,480

28,214

940

1.76

1.96

55,960

May

1,510

1,590

1,650

1,730

1,780

1,780

1,840

1,840

1,760

1,780

1,780

1,580

1.470 

1,476

1,540

1,680

1,900

2,210

2,600

2,980

3,400

3,670

3,990

4,780

4.940

*4,840

4,940

4,650

4,440

*4,430

4,560

85,110

2,745

5.13

5.92

168,800

June

4,890

4.970

4,800

4,650

4,380

3,990

3,560

3,340

3,470

3,720

4,020

4,020

3,940 

3,850

3,750

3,510

3,100

*2,800

2,720

2,940

2,900

2,660

2,520

2,540

2,520

2,460

2.440

2,566

2,630

2,570

102,160

3,405

6.36

7.10

202,600

July

2.370

2,250

2,140

1,990

1,890

1,820

1,800

1,780

1,780

1,800

1,820

1,850

1,810 

1,740

1,640

1,540

1,460

1,400

1,360

*1,340

1,300

1,320

1,250

1,220

1,190

1,140

1,120

1,080

1,050

1,020 

' 961

48,261

1,557

2.91

3.35

95,720

Aug.

900

855

820

770

741

741

723

696

687

687

652

636

620 

612

620

588

572

564

548

524

516

508

508

*493

493

500

540

540

508 

493

479

19,129

617

1.15

1.33

37,940

Sept.

472

458

444

437

430

430

430

437

424

430

430

424

418 

412

406

400

400

390

390

390

390

390

437

451

444

444

451

472

465 

*458

12,854

428

0.800

0.89

25,500

Calendar year 1955: Max 3,OOO Min 270 Mean 631 Cfsm 1.18 In. 16.01 Ac -ft 456,800

Water year 1955-56: Max 4,970 Min 300 Mean 1,018 Cfsm 1.90 In. 25.88 Ac-ft ' 738,900

Peak discharge (base. 1.700 cfs). May 27 (9 to 11 a.m.) 5,070 cfs (4.62 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 16-26, Dec. 6 to Jan. 2, Jan. 26 to Feb. 20, Feb. 25 to Apr. 4, 

Sept. 18-22; discharge estimated on basis of weather records, recorded range in stage, and records 

for other Salmon River stations.
SALMON RIVER BASIN 207

Salmon River below Yankee Fork, near Clayton, Idaho

Location. Lat 44°16', long 114°44', in sec. 20, T. 11 N., R. 15 E. , on left bank a 

quarter of a mile downstream from Sunbeam Dam and Yankee Fork and 18 miles upstream 

from Clayton.

Drainage area. 841 sq mi.

Records available. October 1921 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 5,900 ft (by barometer). Prior to 

0"ct. 3, 1926, staff gage at site 200 ft downstream at datum approximately 1.5 ft 

higher. Oct. 3, 1926, to Sept. 2, 1927, staff gage and Sept. 3, 1927, to Nov. 5, 

1934, water-stage recorder, at site 200 ft downstream at approximately present datum.

Average discharge. 35 years (1921-56), 979 cfs (708,800 acre-ft per year).

Extremes. Maximum discharge during year, 10,300 cfs May 24 (gage height, 11.60 ft); 

minimum daily, 370 cfs Nov. 16.

1921-56: Maximum discharge, that of May 24, 1956; minimum, 160 cfs (estimated) 

Nov. 25-30, 1929.

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

Diversions for irrigation of about 6,000 acres above station.

Revisions (water years). WSP 1347: 1931.

Rating tables, water year 1955-56, except periods of ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used May 24)

2.2 

2.5 

3.0 

4.0 

5.0

Oct. 1 to May 25 May 24 to Sept. 30

362

508

773

1,410

2,160

6.0

7.0

9.0

10.2

3,070

4,080

6,300

7,810

2.3 

2.6 

3.0 

4.0

5.0

495

642

847

1,420

2,100

6.0

7.0

9.0

11.4

2,920

3,850

6,370

9,960

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ttotal

Mean

Cfsm

In.

Ac -ft

Oct.

488 

483

473

463

483

478

478

483

478

473

534

498

488

483

478

468

458

458

473

483

468

478

473

453

467

*478

483

488

478

559" 601

15,023

485

0.577

0.66

29,800

Nov.

518 

463

534

564

575

498

493

483

498

580

580

483

443

498

b410

b570

bI56"

b480

590

822

942

74S

622

627

601

590

580

564

549

544

16,667

556

0.661

0.74

33,060

Dec.

539 

*518

493

448

409

488

498

463

503

478

493

518

478

419

429

493

498

493

508

518

575

1,070

1,550

1,300

1,130

1,080

1,010

862

773

713

713

20,460

660

0.785

0.90

40,580

Jan.

707 

S50" 734

691

680

664

659

643

585

601

*595

580

580

554

590

632

601

569

564

575

569

559

559

539

478

b470

b490

b480

b480

b490

b450

18,028

582

0.692

0.80

35,760

Feb.

b390 b4"2"0

b450

b480

bSOO

488

b460

b440

b430

b450

478

483

473

463

b450

b410

b440

b440

b440

443

*443

453

453

448

453

453

453

448

453

13,085

451

0.536

0.58

25,950

Mar.

453 

453

458

458

458

429

429

458

458

448

424

419

I3T

424

419

429

434

438

448

463

473

498

513

606

675

718

675

616

611

606

601

15,426

498

0.592

0.68

30,600

Apr.

590 

569

554

364

*575

559

585

564

595

702

856

907

1,000

1,170

1,370

1,540

1,680

1,750

2,040

2,340

2,700

2.960

2,880

2,780

2,710

2,570

2,480

*2,450

2,300

2,160

46,500

1,550

1.84

2.06

92,230

May

2,140 

2,300

2,410

2,560

2,630

2,730

2,770

2,870

2,830

2,850

2,840

2,520

2,290

2,260

2,460

2,920

3,620

4,420

- 5,270

5,990

6,680

7,260

7,730

9,650

9,800

*9,350

9,160

8,610

*8,240

8, 300

8, 6 8O

154,140

4,972

5.91

6.82

305,700

June

9.550 

9,270

8,760

8,190

7,640

6,750

5,820

5,500

6,030

6,620

6,990

6,800

6,550

6,290

6,020

5,420

4,620

*4,140

4,060

4,370

4,260

3,880

3,690

3,680

3,630

3,550

5.550

3,600

3,690

5,540

166,240

5,541

6.59

7.35

329,700

July

5.270 

5,690"

2,940

2,720

2,600

2,510

2,480

2,450

2,410

2,410

2,440

2,440

2,400

2,510

2,180

2,060

1,960

1,880

1,850

*1,750

1,720

1,750

1,650

1,610

1,570

1,500

1,470

1,420

1,590

1,550

1.500

64,820

2,091

2.49

2.87

128,600

Aug.

1.250 

1,180

1,140

1,080

1,050

1,060

1,050

1,000

977

972

944

922

895

874

895

868

857

816

800

785

764

748

758

*735

725

748

821

826

779

748

718

27,721

894

1.06

1.25

54,980

Sept.

682 

652

642

652

617

607

607

617

597

602

597

587

587

572

565

555

548

555

555

529

529

529

565

582

582

568

577

622

627

*617

17,655

588

0.699

0.78

34,010

Calendar year 1955: Max 5,040 Hln 330 Mean 911 Cfsm 1.08 In. 14.70 Ac-ft 659,400

Water year 1955-56: Max 9,800 Hln 370 Mean 1,573 cfsm 1.87 In. 25.47 Ac-ft 1,142,000

Peak discharge (base, 2.550 cfs) . Apr. 22 (12:50 a.m.) 5,070 cfs (6.00 ft)j May 7 (12 p.m.) 

5.O7O cfs 16.00 ft); Hay 24 110:30 p.m.) 10,500 cfs (11.60 ft).

Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
208 SALMON RIVER BASIN

Salmon River near Challis, Idaho

Location. Lat 44°23', long 114°15', in sec. 7, T. 12 N., R. 19 E., on left bank 250 ft 

downstream from Bayhorse Creek and 9 miles south of Challis.

Drainage area. 1,800 sq mi, approximately. 

Records available. October 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 5,163.99 ft above mean sea level, datum 

of 1929.

Average discharge.--28 years, 1,436 cfs (1,040,000 acre-ft per year).

Extremes. Maximum discharge during year, 15,400 cfs May 25 (gage height, 10.95 ft, partly 

estimated on basis of recorder graph for station near Clayton); minimum, 263 cfs 

Feb. 1 (gage height, 1.28 ft), but may have been less during period of ice effect. 

1928-56: Maximum discharge, that of May 25, 1956; minimum, 160 cfs Dec. 14, 1940.

Remarks. Records excellent except those for periods of ice effect or no gage-height

record, which are good. Diversions for irrigation of about 10,000 acres above station.

Revisions. WSP 1043: Drainage area.

Rating table, water year 1955-56, except period of ice effect (gage 

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

1.7 

2.0 

2.5 

3.0

420

560

B40

1,190

4.0 

5.0 

6.0

2,150

3,390

4,850

6,480

10,600

15,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

21

28

29

30 

31

 total

Mean

Cfsm

In.

Ac-ft

Oct.

762 

750

732

714

726

744

750

750

750

738

780

892

774

756

750

738

726

720

720

750

744

750

750 

714

720

*732

756

750

750

810

912

23,310

752

0.418

0.48

46,230

Nov.

798 

709

768

822

866

774

762

738

744

798

905

750

595

692

565

480

54T

700

900

1,100

1.250

1,070

900 

890

880

860

850

84O

810

780

24,141

805

0.447

0.50

47 , 880

Dec.

770 

*726

682

643

520

600

680

640

710

660

680

720

670

620

560

630

700

700

710

730

1,000

1,700

3.000 

2,400

1,850

1,700

1,550

1,400

1,250

1,150

1,000

31,351

1,011

0.562

0.65

62,180

Jan.

1,000 

1.050

1,000

1,000

1,050

1,000

970

900

850

840

*828

792

792

738

798

866

828

768

768

780

780

768

768 

704

605

616

648

632

621

654

b520

24,934

804

0.447

0.52

49,460

Feb.

b450 

b520

b580

648

709

687

665

626

605

638

692

704

687

64B

632

550

610

621

605

632

638

*665

670

621

621

626

616

621

643

18,210

628

0.349

0.38

36,120

Mar.

638

643

643

638

632

565

565

648

643

621

580

550

621

595

575

605

692

744

840

950

905

1,050

1,150 

1,430

1.460

1,330

1,100

970

977

991

977

25,328

817

0.454

0.52

50,240

Apr.

931 

892

846

*§T9

912

853

898

879

898

1,040

1,290

1,390

1,480

1,670

1,940

2,150

2,380

2,390

2,670

3,070

3,490

3,890

5,950 

3,770

3,730

3,540

3,390

*3,320

3,150

2,960

64,648

2,155

1.20

1.34

128,200

May

2.890 

375SO"

3,180

3,400

3,460

3,590

3,600

3,770

3,710

3,730

3,750

3,520

3,200

3,060

3,160

3,640

4,480

5,560

6,880

8,230

9,540

10,900

11,900 

13,800

14.900

14,200

13,800

13,000

*12,500

12,500

13,300

220,170

7,102

3.95

4.55

436,700

June

14^600 

14,400

13,400

12,500

11,700

10,100

8,670

8,070

8,690

9,710

10,600

10,300

9,870

9,490

9,100

8,440

*7,270

6,340

6,210

6,570

6,360

5,820

5,560 

5,540

5,510

5,580

5,400

5,460

5,670

5,430

252,160

8,405

4.67

5.21

500,200

July

4,980 

4,670

4,440

4,140

3,960

. 3,880

3,850

3,780

3,780

3,810

3,850

3,810

3,740

3,600

3,360

3,210

3,070

2,950

*2,860

2,810

2,760

2,780

2,650 

2,570

2,530

2,420

2,340

2,290

2,260

2,220 

2.110

101,480

3,274

1.82

2.10

201,300

Aug.

2.010 

1,900

1,830

1,750

1,690

1,670

1,660

1,590

1,530

1,520

1,480

1,450

1,400

1,370

1,400

1,380

1,330

1,290

1,270

1,240

1,220

1,190

1,180 

 1,170

1,150

1,160

1,210

1,260

1,200

1,150 

1.120

43,770

1,412

0.784

0.90

86,820

Sept.

1.090 

1,6S6

1,030

1,020

998

991

984

998

984

970

970

964

964

944

931

918

912

892

879

879

879

££wz

924

924

912

912

944

964

944

28,535

951

0.528

0.59

56,600

Calendar year 1955: Max 7,030 Min 415 Mean 1,310 Cfsm 0.728 In. 9.87 Ac-ft 948,060

Water year 1955-56: Max 14,900 Min 450 Mean 2,344 Cfsm 1.30 In. 17.74 Ac-ft 1,702,000

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Nov. 18 to Dec. 1, Dec. 6 to Jan. 10; die 

recorded range in stage, weather records, and records for station below 

and stations on other streams in Salmon River basin.

scharge estimated on basis of 

Yankee Pork, near Clayton
SALMON RIVER BASIN 209

Challis Creek near Challis, Idaho

Location. Lat 44"34 I , long 114"19' , In sec. 2, T. 14 N., R. 18 E., on left bank 0.1 mile 

downstream from Eddy Creek, 6 miles northwest of Challis, and 6J miles upstream from 

mouth.

Drainage area. 85 sq mi, approximately.

Records available. October 1943 to September 1956.

;e_. Water-stage recorder. Datum of gage is 5,369.3 ft (levels by Topographic Division).

ior to Sept. 27, 1944, staff gage and Sept. 27, 1944, to Nov. 10, 1948, water-stage 

recorder, at site 350 ft downstream at datum 0.64 ft lower. Nov. 11, 1948, to Aug. 11, 

1956, water-stage recorder at present site at datum 0.64 ft lower.

Average discharge. 13 years, 45.7 cfs (33,080 acre-ft per year).

Extremes. Maximum discharge during year, 508 cfs June 1 (gage height, 5.50 ft); maximum 

gage height, 6.30 ft May 24; minimum daily discharge, 9.0 cfs Mar. 6, 7, 10, 11.

1943-56: Maximum discharge, that of June 1, 1956; maximum gage height, that of 

May 24, 1956; minimum discharge, 5.7 cfs Mar. 11, 29, 1950.

Remarks. Records good except those for periods of shifting control, ice effect, or no 

gage-height record, which are fair. Diversions above station for irrigation.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

£0

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

22

21

20

£0

21

21

23

23

22

21

21

21

21

20

20

20

19

19

19

20

20

20

19

18

19

19

19

*19

18

20

18

623

20.1

1,240

Calendar yea

Nov.

17

16

18

19

19

17

17

17

18

20

19

15

b!4

b!5

b!3

b!2

b!3

b!5

b25

b50

25

19

19

16

16

16

16

16

16

15

523

17.4

1,040

Dec.

13

*13

14

b!2

bll

b!3

b!3

b!2

13

13

13

13

b!2

blO

Tz

b!5

b!4

13

12

12

15

118

109

29

b!9

b!5

14

b!4

b!3

b!3

b!2

624

20.1

1,240

Jan.

12

b!3

b!3

b!4

13

12

12

12

b!2

12

12

11

*12

12

12

12

11

bll

11

11

11

11

11

bll

blp_

blO

blO

blO

10

10

10

354

11.4

702

Feb.

10

11

IT

11

11

11

11

11

11

11

11

11

11

11

11

10

10

10

10

10

11

*10

10

blO

10

10

10

10

10 - -. ..

305

10.5

605

Mar.

10

9.5

9.5

9.5

9.3

b9.0

9.0

10

9.5

b9.0

b9.0

9.5

10

9.5

9.5

13

18

25

29

39

38

61

91

95

64

40

29

27

29

34

50

803.6

25.9

1,590

Apr.

26

24

25

*27

25

22

22

22

25

33

41

42

43

62

88

94

102

97

101

111

122

134

138

132

125

*120

112

106

98

_ _93

2,212

73.7

4,390

May

89

88

91

92

94

94

95

101

105

110

110

104

98

94

95

104

132

169

204

224

250

274

293

366

384

380

436

446

449

 454

472

6,497

210

12,690

June

496

466

446

424

410

370

332

310

307

314

307

302

303

£94-

282

275

*262

242

241

235

225

210

200

210

200

190

180

180

170

160

8,543

285

16,940

July

150

140

135

130

120

110

105

100

97

94

90

86

82

78

74

70

66

63

*62

61

60

59

58

58

57

56

55

60

58

56

, 54

2,544

82.1

5,050

Aug.

52

51

51

50

50

50

49

49

48

48

48

49

49

49

50

48

49

48

47

47

46

45

45

45

45

48

*51

50

47

46

45

1,495

48.2

2,970

Sept.

43

42

41

41

40

39

40

40

38

33

38

38

36

34

33

33

32

32

32

31

30

32

32

31

31

32

32

33

32

31

*

1,057

35.2

2,100

- 1955: Max 196 Min 8.0 Mean 35.0 Ac-ft 25,360

Water year 1955-56: Max 496 Mln 9.0 Mean 69.9 Ac-ft 50,760
210 SALMON RIVER BASIN

Pahsiraeroi River near May, Idaho

Location. Lat 44°42 I , long 114°03', in W| sec. 25, T. 16 N., R. 20 E., on right bank a 

quarter of a mile downstream from old highway bridge on Challis-Salraon River highway, 

a quarter of a mile upstream from mouth, and 10 miles northwest of May.

Drainage area. 845 sq mi, approximately.

Records available. October 1929 to September 1956. Monthly discharge only for some periods, published in WSP 1317.

Gage. Staff gage read once daily. Datum of gage is 4,636.95 ft above mean sea level, 

adjustment of 1912.

Average discharge . 27 years, 209 cfs (151,300 acre-ft per year).

Extremes. Maximum discharge observed during year, 409 cfs Dec. 23 (gage height, 2.87 ft); 

maximum gage height observed, 4.37 ft May 25 (backwater from Salmon River); minimum 

daily discharge, 90 cfs May 21, 22, 23.

1929-56: Maximum discharge observed, 454 cfs May 30, 1943 (gage height, 2.81 ft); 

maximum gage height observed, that of May 25, 1956; minimum discharge observed, 74 cfs 

May 19, 1955 (gage height, 1.66 ft).

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

backwater from Salmon River, which are fair. Diversions for irrigation of about 

12,500 acres above station.

Rating table, water year 1955-56, except periods of ice effect or backwater froit

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

(Shifting-control method used Oct. 1 to Dec. 10)

1.7

1.8 

2.0 

2.4 

2.9

136

247

445

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

190

190

187

182

182

190

193

193

193

190

187

187

190

190

187

187

182

182

184

213

210

207

204

210

213

225

225

*241

241

247

254

6,256

202

12,410

Nov.

254

250

247

247

244

247

244

244

247

267

264

254

247

238

213

204

207

216

232

274

274

271

264

261

261

264

267

267

271

274

7,514

250

14,900

Dec.

278

274

*271

264

254

247

244

244

241

238

244

254

235

225

219

219

225

232

244

247

257

278

409

T75

334

314

292

278

257

244

238

8,175

264

16,210

Jan.

238

241

238

238

250

247

244

247

247

250

254

261

*267

271

271

274

264

254

257

261

261

267

267

261

250

244

244

235

232

228

222

7,785

251

15,440

Feb.

b220

b215

b220

222

219

216

213

213

213

216

219

219

222

225

222

216

219

219

219

219

235

a250

250

238

235

238

*235

238

235

6,520

225

12,930

Mar.

241

274

278

267

257

250

244

264

274

264

250

247

254

257

257

274

285

288

292

322

288

288

307

334

330

322

278

264

264

261

261

8,536

275

16,930

Apr.

257

250

250

*250

247

235

235

232

235

235

235

235

232

228

228

225

247

235

228

216

213

207

202

204

204

*199

202

199

a!95

190

6,750

225

13,390

May

143

132

130

121

119

102

101

99

99

99

102

101

95

97

102

101

94

92

91

91

90

90

90

95

100

105

110

120

140

180

210

3,441

111

6,830

June

*260

280

260

240

230

230

230

232

250

220

210

200

190

184

182

*193

187

190

196

193

187

184

187

182

182

176

158

158

158

155

6,084

203

12,07O

July

158

158

160

163

165

163

163

160

160

158

158

155

155

153

153

150

150

150

*148

150

155

155

155

155

155

155

155

155

153

155

155

4,833

156

9,590

Aug.

158

158

158

160

160

160

153

153

150

150

150

150

150

150

150

146

143

143

143

143

146

146

146

148

148

160

*168

168

171

174

174

4,777

154

9,480

Sept.

174

176

a!75

al75

alSO

179

184

182

182

184

190

187

184

184

182

182

176

174

171

174

174

179

174

184

193

196

196

199

202

2T72~

5,494

183

10,900

Calendar year 1955 : Max 409 Mln 74 Mean 199 Ac-ft 143,900

Water year 1955-56: Max 409 Mln 90 Mean 208 Ac-ft 151,100

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of 

eriods, and records for stations on nearby streams. 

b Stage-discharge relation affected by ice.

eather records, records for adjacent
SALMON RIVER BASIN * ii 

Salmon River at Salmon, Idaho

Location. Lat 45°11'00", long 113°53'40", in NEij sec. 6, T. 21 N., R. 22 E., on left 

bank 1,000 ft downstream from island, 0.4 mile upstream from Lemhi River, and 0.5 mile 

downstream from highway bridge at Salmon.

Drainage area. 3,760 sq mi, approximately.

Records available.--April 1912 to September 1916, July 1919 to September 1956. Monthly 

discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 3,911.14 ft above mean sea level, datum 

of 1929 (levels by Corps of Engineers). Prior to Oct. 21, 1929, staff gage at site 

700 ft upstream at different datum.

Average discharge.--41 years (1912-16, 1919-56),1,906 cfs (1,380,000 acre-ft per year).

Extremes.--Maximum discharge during year, 16,500 cfs May 25 (gage height, 8.25 ft); maximum gage height, 8.9 ft Feb. 3 (ice jam); minimum discharge, 690 cfs Feb. 2 (gage 

height, 2.42 ft).

1912-16, 1919-56: Maximum discharge, that of May 25, 1956; maximum gage height, 

9.62 ft Jan. 8, 1942 (ice Jam); minimum, 242 cfs Jan. 8, 1937 (gage height, 1.50 ft).

Remarks. Records excellent except those for periods of ice effect, no gage-height

record, or shifting-control, which are fair. Diversions for irrigation above station.

Revisions (water years).--WSP 1043: Drainage area. WSP 1317: 1916.

Rating-tables, water year 1955-56, except periods of Ice effect or shifting 

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

Oct. 1 to May 22 May 23 to Sept. 3O

2.5 730

2.8 1,010

3.2 1,460

4.0 2,610

5.0 4,600

6.0 7,100

7.0 10,200

8.0 13,500

2.3 1,160

2.8 1,730

3.4 2,660

4.0 3,950

5.0 6,860

6.0 10,200

7.0 13,600

8.0 17,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,060

1,060

1,040

1,010

1,010

1,030

1,070

1,100

1,100

1,090

1,090

1,140

1,150

1,130

1,120

1,110

1,100

1,100

1,080

1,070

1,120

1,140

1,180

1,220

1,210

1,220

1,230

*1,270

1,280

1,300

1,580

35,210

1,136

69,840

Nov.

,420

,360

,300

,360

,410

,450

,350

,330

,300

,330

,390

,440

,280

,150

,200

970

920

,030

,330

,520

,840

.910

,640

,470

,470

,450

,440

,410

,390

,360

41,220

1,374

81,760

Dec.

1,350

1,340

*1 , 300

1,230

1,150

1,090

1,200

1,240

1,180

1,220

1,200

1,260

1,260

1,110

950

940

1,200

1,330

1,330

1,350

1,400

1,790

3,420

5,890

2,540

2,220

2,120

1,970

1,700

1,540

1,450

48,250

1,556

95,700

Jan.

1,500

1,500

1,520

1,520

1.610

1,530

1,450

1,410

1,400

1,320

1,380

1,380

1,350

1,330

*1 , 340

1,380

1,410

1,350

1,300

1,300

1,300

1,330

1,300

1,260

1,180

1,080

1,140

1,180

1,070

970

1,020

41,090

1,325

81,500

Feb.

874

811

b840

bl.OOO

1,100

1,200

1,150

1,100

1,050

1,000

1,050

1,100

1,200

1,150

1,100

1,050

950

1,000

1,050

1,000

1,050

1,050

*b 1,200

bl,200

bl.100

bl.100

bl.100

bl,050

bl , 100

_ _____

------

30,725

1,059

60,940

Mar.

bl,100

bl,100

1,100

1,100

1,100

1,100

1,000

1,000

1,100

1,100

1,050

1,000

950

1,050

1,100

1,200

1,400

1,500

1,600

1,800

2,070

2,160

2,680

2,910

5,000

2,490

2,010

1,750

1,620

1,670

1,710

47,520

1,533

94,250

Apr.

1,590

1,520

*1,460

1,420

1,480

1,450

1,590

1,390

1,400

1,470

1,710

1,980

2,020

2,220

2,520

2,830

3,220

3,310

3,420

3,820

4,280

4,760

5,020

4,900

4,690

4,550

*4,460

4,260

4,080

3,870

86,490

2,883

171,600

May

5,680

3,680

3,800

3,970

4,130

4,220

4,240

4,350

4,590

4,390

4,460

4,370

4,040

3,780

3,680

e3,910

e4,670

e5,820

67,180

e8,740

elO,200

ell, 700

e!2,900

e!4,000

el6.500

e!5,500

e!5,400

e!5,500

14,600

14,400

*14,700

246,480

7,951

488,900

June

15,500

16,000

15,500

14,500

15,700

12,600

10,900

9,710

9,610

10,400

11,100

11,200

10,800

10,500

10,200

»9,840

9,020

7,900

7,510

7,440

7,830

7,120

6,570

6,440

6,380

6,160

6,050

6,030

6,130

6,100

------

288,320

9,611

571,900

July

5,690

5,350

5,100

4,790

4,510

4,350

4,200

4,100

4,050

4,050

4,080

4,150

4,080

3,980

3,760

3,550

3,370

*3,240

5,070

2,950

2,910

2,810

2,760

2,680

2,640

2,550

2,480

2,410

2,580

2,580

2,290

110,670

5,570

219,500

Aug.

2,180

2,090

2,030

1,960

1,850

1,800

1,800

1,810

1,770

1,690

1,670

1,650

1,610

1,570

1,550

1,550

1,510

1,480

1,460

1,420

1,580

1,560

1,550

1,350

1.540

1,370

1,450

*1,490

1,530

1,470

1,440

49,960

1,612

99,090

Sept.

1,420

1,390

1,350

1,310

1,280

1,270

1,260

1,270

1,290

1,270

1,270

1,290

1,310

1,290

1,270

1,250

1,240

1,230

1,220

1,200

1,180

1,180

1,220

1,230

1,250

1,240

1,240

1,250

1,270

1,290

------

38,050

1,268

75,430

Calendar year 1955: Max 7,940 Kin 750 Mean 1,715 Ac-ft 1,241,000

Water year 1955-56: Max 16,300 Win 811 Mean 2,907 Ac-ft 2,110,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice. 

e Shifting-control method used.
212 SALMON RIVER BASIN

Texas Creek near Leadore, Idaho

Location. Lat 44°35', long 113°20', in NW£sw£ sec. 35, T. 15 N., R. 26 E., on right bank 

50 ft downstream from Nez Perce Creek, half a mile upstream from county road bridge, 

and 6? miles south of Leadore.

Drainage area.--73 sq mi, approximately; 74 sq mi, approximately, at former site.

Records available.--June 1955 to September 1956. Records for November 1938 to July 1939 

at site half a mile downstream not equivalent owing to diversions.

Sage. Water-stage recorder. Altitude of gage is 6,280 ft (by barometer). November.1938 

to July 1939, staff gage at site half a mile downstream at different datum.

Extremes. Maximum discharge during year, 116 cfs Mar. 25 (gage height, 3.94 ft), from 

rating curve extended above 50 cfs by logarithmic plotting; maximum gage height 

recorded, 4.11 ft Mar. 7 (ice jam); minimum discharge, 5.2 cfs May 15 (gage height, 

2 . if it ) .

1955-56: Maximum discharge, that of Mar. 25, 1956; maximum gage height, that of 

Mar. 7, 1956; minimum discharge, 4.3 cfs Aug. 31, 1955 (gage height, 2.72 ft).

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

which are poor. Diversions for irrigation above station.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Sept. 11-30)

2.7

2.8

2.9

3.0

3.3 

3.6

4.0

45

75

125

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

7.0

77(5

7.0

7.6

10

9.4

8.8

11

12

11

12

14

15

15

14

14

13

12

13

14

15

18

20

19

19

19

22

*26

26

26

25

461.8

14.9

916

Nov.

23

b23

25

27

28

26

26

26

27

33

28

b22

b!9

b!7

b!6

blS" b!5

b25

32

13

41

30

b22

25

23

25

26

25

25

24

765

25.5

1,520

Dec.

24

23

23

*22

b20

b23

b23

b22

b22

b24

26

86

b25

b24

Z2

22

83

25

25

27

32

45

60

50

41

38

35

31

28

25

24

880

28.4

1,750

Jan.

25

25

26

27

27

27

27

26

24

25

*26

25

25

24

25

26

25

b25

25

25

26

26

26

b!8

b!6

b!9

b!9

b!8

b!9

b!7

15

729

23.5

1,450

Feb.

13

T6

20

22

24

25

24

22

21

23

25

27

26

25

23

22

22

23

24

24

25

24

25

24

23

24

24

24

*24

668

23.0

1,320

Mar.

24

25

25

25

25

b24

b23

24

24

25

25

24

25

24

24

25

26

27

31

37

45

53

58

74

100

75

49

*44

36

40

39

1,125

36.3

2,230

Apr.

34

32

32

34

34

b32

33

32

36

44

44

39

36

35

34

35

39

32

30

30

28

26

85

*24

22

22

26

25

22

20

937

31.2

1,860

May

16

14

14

14

11

8.8

10

9.4

7.6

8.2

11

16

12

9.4

6.7

7.6

7.6

9.4

12

10

8.2

*7.0

7.0

17

20

21

26

28

30

30

22

430.9

13.9

855

June

21

26

28

30

26

25

23

21

21

23

22

22

21

18

16

*26

25

19

15

15

23

19

16

18

16

16

15

14

12

12

604

20.1

1,200

July

13

19

21

12

10

11

11

11

10

11

13

14

11

12

11

11

8.2

878

9.4

10

11

11

11

9.4

10

*10

11

10

11

11

11

353.8

11.4

702

Aug.

9.4

8.8

7.6

7.6

8.8

9.4

10

8.8

8.2

11

11

11

11

8.8

7.0

6.4

77?

8.8

10

11

12

*12

13

14

14

14

14

14

14

13

12

328.2

10.6

651

Sept.

12

12

12

13

12

8.2

7.0

7.6

7.0

7.6

7.6

7.6

7.6

7.0

7.6

8.2

8.2

8.8

8.8

8.2

8.8

8.2

10

11

11

10

8.2

10

10

*10

275.2

9.17

546

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 100 Mln 6.4 Mean 20.6 Ac-ft 15,000

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Hote. Ho gage-height record Dec. 15 to Jan. 10, Jan. 31 to Feb. 28, Mar. 1-5, 8-21; discharge 

estimated on basis of weather records and records for Lemhl River near Lemhl and stations on other 

nearby streams.
SALMON RIVER BASIN 

Lemhi River near Lemhi, Idaho

213

Location. Lat 44°55" , long 113°37', in sec. 4, T. 18 N., R. 24 E., near center of span 

on downstream side of private bridge on Langfitt Ranch, 3j miles downstream from 

Hayden Creek and 4| miles north of Lemhi.

Drainage area. 890 sq mi, approximately.

Records available . November 1938 to August 1939, April 1955 to September 1956.

Sage. Staff gage read once daily; crest-stage indicator since Apr. 29, 1955. Datum of 

gage is 4,971.7 ft above mean sea level, adjustment of 1929 (levels by Corps of Engineers) .

Extremes. Maximum discharge during year, 1,090 cfs probably June 1 (gage height, 

3.51 ft); minimum observed, 124 cfs Aug. 25 (gage height, 1.62 ft).

1938-39, 1955-56: Maximum discharge, that of June 1, 1956; minimum observed, 

93 cfs Sept. 3-7, 1955 (gage height, 1.51 ft); minimum gage height observed, 1.41 ft 

Aug. 27, 1939.

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

which are fair. Many diversions for irrigation above station.

Revisions (water years). WSP 1397: 1939.

Rating table, water year 1955-56, except periods of Ice effect (gage 

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

(Shifting-control method used Sept. 22-30)

1.5

1.6 

1.9 

2.2

113

136

221

330

2.6 

3.0 

3.5

500

735

1,080

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

190

190

179

173

170

176

193

202

202

218

196

199

218

193

184

190

184

179

187

170

170

162

162

173

184

187

193

*212

218

224 

224

5,902

190

11,710

Nov.

212

212

224

231

231

218

218

218

218

224

231

218

b200

193

b!80

b!70

bT90

224

218

245

252

238

206

212

206

212

218

212

212

206

6,449

215

12,790

Dec.

212

212

*209

199

bl80

b200

b200

b!80

196

221

218

212

199

b!90

b!80

b!80

202

199

199

206

221

286

'290 306

258

266

258

238

b220

b220

b210

6,767

218

13,420

Jan.

b210

218

218

224

228

228

228

228

206

224

224

221

228

228

*231

235

228

235

235

228

224

228

224

231

212

b!90

b!90

b200

b!80

b!60

a!55

6,699

216

13 , 290

Feb.

a!50

aT60~

a!70

a!85

a210

a210

a200

a!90

a!80

a!80

a200

b210

206

199

b!90

b!80

b!80

alSO

a!90

a!90

196

190

*196

190

184

190

190

184

190

- -----

5,470

189

10,850

Mar.

184

190

190

196

190

184

b!80 190"

190

196

190

184

196

190

184

184

196

209

241

290

334

366

424

491

556

486

346

290

290

298

290

8,125

262

16,120

Apr.

269

241

228

*235

241

215

235

228

228

248

269

258

258

272

280

294

318

294

286

290

314

322

322

314

290

283

298

*286

276

269

8,161

272

16,190

May

255

248

241

255

262

255

269

269

269

276

269

290

269

255

248

248

280

326

370

446

500

556

640

*728

828

828

870

842

891

926

941

14,156

457

28,080

June

1.050

1,040

1,010

982

968

835

722

670

670

683

709

683

646

610

550

*610

550

520

530

592

556

496

460

455

446

402

386

382

398

574

18,985

633

37,660

July

350

322

370

330

322

318

318

310

294

290

283

290

290

286

280

266

258

*231

224

212

218

231

218

199

195

193

193

206

224

238

231

8,188

264

16,240

Aug.

215" 224

182

170

154

154

159

159

149

149

144

144

139

139

139

144

»144

144

139

139

144

139

134

129

124

129

144

154

152

157

146

4,685

151

9,290

Sept.

152

141

141

141

146

146

141

152

152

154

165

176

176

165

159

159

165

159

159

159

149

152

146

152

146

146

141

152

184

196

4,652

155

9,230

Calendar year 1955 : Max - Mln - Mean - Ac-ft -

Water year 1955-56 : Max 1,050 Mln 124 Mean 268 Ac-ft 194,900

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Texas 

Creek and other nearby streams.

b Stage-discharge relation affected by lee.
214 SALMON RIVER BASIN

Panther Creek near Shoup, Idaho

Location. Lat 45°19', long 114°23', in sec. 19, T. 23 N., R. 18 E. , on left bank 25 ft 

downstream from bridge on private road, 1 mile upstream from mouth, and 7 miles southwest of Shoup.

Drainage area. 529 sq mi.

Records available. October 1944 to September 1956.

Gage. Staff gage read once daily. Altitude of gage is 3,280 ft (from river-profile map).

Average discharge. 12 years, 254 cfs (183,900 acre-ft per year).

Extremes. Maximum discharge observed during year, 2,740 cfs May 25 (gage height, 

4.30 ft); minimum daily, 50 cfs Feb. 2.

1944-56: Maximum discharge observed, that of May 25, 1956; maximum gage height 

observed, 4.4 ft Jan. 6, 1947 (backwater from ice); minimum discharge observed, 

30 cfs Feb. 10, 1953 (gage height, -0.21 ft).

Remarks. Records good except those for periods of ice effect or doubtful gage-height 

record, which are fair. Diversions for irrigation of about 1,000 acres above station.

Revisions (water years). WSP 1063: 1945.

Rating table, water year 1955-56, except periods of Ice effect ( 

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used May 18 to June 13)

1.2 

1.6

106

198

326

495

2.0 

2.5

3.0 

4.0 

4.5

715

1,030

1,410

2,300

2,800

Discharge, In cubic feet per second, water ye>H3-October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

104

100

96

96

100

100

100

96

96

96

100

100

100

100

100

100

100

96

96

100

100

100

100

100

96

96

96

S6

*96

100

100

3,056

98.6

0.186

0.21

6,060

Nov.

96

93

100

112

116

108

104

100

100

96

96

96

93

89

80

70

85

100

120

150

137

128

116

104

100

104

104

104

100

93

5,094

103

0.195

0.22

6,140

Dec.

93

93

93

*75

55

80

90

80

95

80

85

100

90

80

75

90

95

90

100

110

120

212

250

155

128

124

124

89

95

100

100

3,246

105

0.198

0.23

6,440

Jan.

100

95

90

92

92

91

91

90

85

90

95

93

90

*85

90

90

85

80

90

90

89

89

82

82

70

70

72

75

75

70

65

2,643

85.3

0.161

0.19

5,240

Feb.

55

50

55

60

70

75

75

70

70

70

75

78

75

75

70

65

70

70

75

75

80

85

80

75

75

75

*75

75

75

2,073

71.5

0.135

0.15

4,110

Mar.

75

80

80

80

80

75

70

70

70

75

75

70

65

65

70

75

75

80

85

90

95

105

120

d!50

d200

d250

d200

175

165

155

155

3,275

106

0.200

0.23

6,500

Apr.

146

141

*135

137

137

120

116

137

141

177

256

263

276

276

345

393

409

384

472

505

590

692

703

703

612

569

*574

590

505

481

10,985

366

0.692

0.77

21,790

May

454

436

454

505

547

558

569

579

692

715

756

756

692

590

569

657

761

1,390

1,560

1,970

2,040

2,130

2,310

2,640

2,740

2,540

2,540

2,540

2,230

2,230

*2, 180

41,330

1,333

2.52

2.91

81,980

June

2,450

2,230

2,040

1,940

1,760

dl , 500

1,250

1,230

1,200

1,200

1,170

1,100

1,030

982

*923

891

866

767

692

657

646

623

590

579

537

505

481

472

454

445

31,190

1,040

1.97

2.19

61,860

July

409

393

409

401

368

345

322

315

308

290

283

290

283

276

250

244

232

*229

220

215

209

204

198

193

193

188

188

193

182

188 

182

8,200

265

0.501

0.58

16,260

Aug.

177

170

170

165

165

160

165

160

155

150

146

141

141

137

137

137

133

133

128

124

120

120

120

120

116

133

250

*201

180

170 

165

4,689

151

0.285

0.33

9,300

Sept.

146

133

133

128

124

120

114

114

114

114

110

118

118

110

106

100

100

100

100

96

96

96

100

96

95

95

91

106

106

106

3,285

110

0.208

0.23

6,520

Calendar year 1955: Max 1,250 Mln 50 Meaa 205 Cfsm 0.388 m. 5.26 Ac-ft 148,500

Water year 1955-56: Max 2,740 Mln 50 Mean 320 Cfsm 0.605 in. 8.24 Ac-ft 232,200
SALMON RIVER BASIN 215

Salmon River near Shoup, Idaho

Location. La t 45°19'30", long 114°26'00", In NE^SWi sec. 14, T. 23 N. , R. 17 E., on right 

bank 0.6 mile upstream from Owl Creek, 2.3 miles downstream from Panther Creek, and 

9 miles southwest of Shoup.

Drainage area. 6,270 sq ml, approximately. 

Records available. October 1944 to September 1956.

Gage . Water-stage recorder. Altitude of gage Is 3,160 fb (from river-profile map).

Prior to May 4, 1947, wire-weight gage at site 1.3 miles upstream at datum 3,168.69 ft 

above mean sea level, unadjusted. May 4, 1947, to Sept. 17, 1951, staff gage at site 

200 ft downstream from wire-weight gage at datum 1.28 ft higher than datum of wireweight gage (corrected).

Average discharge . 12 years, 3,056 cfs (2,212,000 acre-ft per year).

Extremes. --Maximum discharge during year, 24,900 cfs May 26 (gage height, 13.00 ft); minimum dally, 1,130 cfs Feb. 2.

1944-56: Maximum discharge, that of May 26, 1956; minimum daily, 800 cfs Jan. 31, 

Feb. 1, 1951.

Remarks . --Records excellent except those for periods of ice effect or no gage-height

record, which are fair. Diversions for irrigation of about 88,000 acres above station.

Rating table, water year 1955-56, except period of ice effect (gage 

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

1.8 

2.1 

2.5 

3.0 

4.0

1,070

1,280

1,640

2,200

3,590

5.0

7.0

9.0

11.0

13.0

5,190

9,150

13,700

19,000

24,900

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,500 

1,500

1,450

1,420

1,420

1,450

1,500

1,550

1,550

1,500

1,500

1,600

1,600

1,600

1,600

1,550

1,550

1,550

1,500

1,500

1,600

1,600 

1,650

1,700

1,700

1,700

1,700

1,720

*1,750

1,800

1,900

49,210

1,587

97,610

Nov.

2,000 

1,900

1,800

1,900

2,000

2,000

1,900

1,900

1,800

1,900

1,950

2,000

1,800

1,600

1,650

1,400

1,500

1,450

1,900

2,200

2,600

2,700 

2,300

2,050

2,050

2,050

2,050

2,000

2,000

1,950

58,100

1,937

115,200

Dec.

1,900 

1,900

1,800

*1,760

1,630

1,500

1,700

1,750

1,650

1,700

1,700

1,750

1,750

1,600

1,500

1,300

1,700

1,900

1,900

1,900

2,000

3,100 

4,800

5,400

3,600

3,200

3,000

2,800

2,400

2,200

2,000

68,590

2,213

136,000

Jan.

2,100 

2,100

2,100

2,100

2,500

2,200

2,000

2,000

2,000

1,900

1,900

1,900

1,900

*1,850

1,830

1,680

1,980

1,940

1,720

1,770

,770

,830 

,8|60

,8,00

,510

,470

,420

,620

,500

,400

1,450

56,900

1,835

112,900

Feb.

1,250

1,150

1,250

1,400

1,600

1,700

1,600

1,550

1,500

1,400

1,500

1,550

1,650

1,600

1,550

1,450

1,350

1,400

1,500

1,450

1,550

1,600 

1,800

1,800

1,700

1,700

*1,700

1,600

1,700

- -----

44,530

1,556

88,320

Mar.

1,700 

1,700

1,700

1,700

1,700

1,700

1,550

1,550

1,700

1,700

1,600

1,500

1,450

1,600

1 , 700

1,800

1,860

2,030

2,490

2,950

3,770

5,540 

4,340

4,730

4,549

4,020

3,360

2,740

2,510

2,460

2,520

74,200

2,394

147,200

Apr.

2,420 

2,250

*2,150

2,080

2,090

2,090

2,050

2,020

2,040

2,100

2,410

2, HO

2,970

3,140

3,460

3,960

4,420

4,650

4,660

5,140

5,790

6,450 

6.990

6,970

6,490

6,260

*6,070

5,790

5,640

5,300

120,600

4,020

239,200

May

4,990 

4,730

4,760

4,970

5,190

5,280

5,440

5,570

5,820

5,880

6,000

5,920

5,480

5,070

4,850

5,000

5,920

7,690

9,900

11,800

13,700

15, 700 

18,100

19,900

22,300

24.400

23,500

22,900

21,600

20,900

*EO,700

345,960

11,100

682,200

June

21,500 

22.500

22,200

21,000

19,500

17,800

15,900

14,100

15,100

15,500

13,900

14,200

13,700

13,200

*12,700

12,500

11,600

10,100

9,070

8,900

9,610

8,920 

8,160

,910

,790

,570

,290

,170 ~TT70

,210

379,770

12,600

753, 500

July

6.950 

6,510

6,540

5,980

5,620

5,550

5,100

4,990

4,820

4,780

4,750

4,850

4,800

4,730

4,500

4,300

*4,120

3,950

3,780

5,640

3,560

3,460 

3,400

5,500

5,220

5,160

5,110

3,080

3,040

3,070

3.010

135,230

4,362

268,200

Aug.

2,900 

2,760

2,700

2,620

2,510

2,430

2,420

2,400

2,370

2,280

2,200

2,150

2,100

2,040

2,000

1,980

1,950

1,880

1,850

1,810

1,740

1,730 

1,730

1,740

1,740

1,770

2,120

*2,160

2,140

2,100

2,030

66,350

2,140

131,600

Sept.

2.000 

1,950

1,860

1,850

1,770

1,740

1,710

1,700

1,720

1,730

1,700

1,750

1,780

1,760

1,720

1,710

1,690

1,670

1,660

1,620

1,620

1,610 

1,640

1,660

1,690

1,700

1,710

1,740

1,800

1,820

52,040

1,735

105,200

Calendar year 1955: Max 11,400 Min 1,120 Mean 2,450 Ac-ft 1,773,000

Water year 1955-56: Max 24,400 Min 1,130 Mean 3,960 Ac-ft 2,875,000
216 SALMON RIVER BASIN

Middle Fork Salmon River near Cape Horn, Idaho

Location.--lat 44°25', long 115°11', in sec. 34, T. 13 N., R. 11 E., on left bank 1,100 ft 

downstream from Little Beaver Creek, half a mile downstream from confluence of Marsh 

and Beaver Creeks, and 2 miles northwest of Cape Horn.

Dra inage area.--138 sq mi.

Records available. September 1928 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317.

Gage --Water-stage recorder. Altitude of gage is 6,435 ft (by barometer). 

Average discharge.--28 years (1928-56), 235 cfs (170,100 acre-ft per year).

Extremes. Maximum discharge during year, 2,980 cfs May 24 (gage height, 6.96 ft); minimum, 39 cfs Nov. 2 (gage height, 2.23 ft), but may have been less during period of ice 

effect.

1928-56: Maximum discharge, that of May 24, 1956; minimum discharge recorded, 

31 cfs Apr. 14, 1945 (gage height, 2.12 ft) .

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. No diversion above station.

Revisions.--WSP 738: Drainage area.

Rating tables, water year 1955-56, except periods of lee effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Feb. 29 Mar. 1 to Sept. 30

2.3 

2.5 

2.8 

3.0 

3.5 

4.0

80

140

190

350

560

2.3 

2.5 

2.8 

3.0 

3.5

144

195

360

4.0 

5.0 

6.0 

7.0

565

1,120

1,960

3,020

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 total

Mean

Cf sm

In.

Ac-ft

Oct.

94

93

91

89

96

93

94

94

93

96

112

ToT

102

98

96

93

91

89

96

96

91

94

91

85

*84

89

85

89

82

110

91

2,901

93.6

0.678

0.78

5,750

Nov.

87

77

85

93

94

73

80

77

80

120

98

72

80

85

75

70

70

65

100

160

150

130

120

110

105

100

95

95

90

90

2,826

94.2

0.683

0.76

5,610

Dec.

85

82

80

70

65

SO

80

75

75

75

75

85

80

65

70

80

75

75

75

80

100

220

382

314

267

239

227

180

170

160

150

3,936

127

0.920

1.06

7,810

Jan.

150

160

140

140

130

120

125

115

105

110

110

*100

105

100

100

110

98

95

94

87

84

84

82

80

75

74

73

75

75

72

15

3,133

101

0.732

0.84

6,210

Feb.

64

60

62

70

75

72

70

70

65

70

70

70

70

70

65

60

60

62

62

62

62

65

65

65

62

62

62

62

62

1,896

65.4

0.474

0.51

3,760

Mar.

62

65

65

65

62

58

62

70

68

62

62

62

65

62

62

65

66

70

70

72

75

75

80

90

95

95

90

85

85

85

85

2,235

72.1

0.522

0.60

4,430

Apr.

85

85

80

*84

79

77

79

79

81

93

106

112

124

146

171

195

213

243

300

360

432

496

516

5l2

508

472

456

456

428

412

7,480

249

1.80

2.02

14,840

May

412

436

460

484

508

560

596

650

710

755

715

625

588

620

705

859

1,060

1,310

1,620

1,940

2,150

2,370

2,510

2., 850

2,600

2,520

2,580

2,420

2,400

*2,580

2,660

43,233

1,395

10.1

11.65

85,750

June

,780

,640

,450

,250

,990

,700

,500

,500

,660

,840

,860

,740

,650

,570

,480

,340

, 180

* ,090

,110

,220

,130

,020

972

996

930

888

882

876

864

_793

43,901

1,463

10.6

11.83

87,080

July

725

685

655

606

570

547

529

508

496

480

464

456

452

420

400

376

353

339

322

311

*297

283

272

262

255

246

246

240

243

231

219

12,488

403

2.92

3.37

24,770

Aug.

210

204

201

198

195

210

207

192

187

187

179

173

168

166

168

163

156

154

149

146

144

142

*142

142

140

151

173

168

156

149

142

5,262

170

1.23

1.42

10,440

Sept.

137

133

131

131

129

126

126

126

122

122

120

118

118

116

114

112

112

110

110

110

110

112

112

110

108

106

106

*120

118

114

3,539

118

0.855

0.95

7,020

Calendar year 1955 : Max 1,530 Mln 55 Mean 207 Cfsm 1.50 In. 20.34 Ac-ft 149,800

Water year 1955-56: Max 2,830 Mln 58 Mean 363 Cfsm 2.63 In. 35.79 Ac-ft 263,500

Peak discharge (base. 950 cfs). May 24 (12:30 a.m.) 2,980 cfs (6.96 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 10, Nov. 13 to Dec. 22, Dec. 28 to Jan. 16, 

Jan. 18, Jan. 24 to Mar. 20. No gage-height record Nov. 16 to Dec, 13, Jan. 1-11, Feb. 29 to Mar. 6, 

Mar. 9 to Apr. 3; discharge estimated on basis of weather records and records for Johnson Creek at 

Yellow Pine, Valley Creek at Stanley, and Bear Valley Creek near Cape Horn.
SALMON RIVER BASIN 217

Bear Valley Creek near Cape Horn, Idaho

Location. Lat 44°26', long 115° 17', in sec. 29, T. 13 N., R. 10 E., on right bank 

250 ft downstream from Fir Creek, 3 miles upstream from mouth, and 7 miles northwest 

of Cape Horn.

Drainage area. 180 sq mi, approximately.

Records available. September 1921 to September 1928 (fragmentary), October 1928 to September 1956.Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 6,340 ft (by barometer). 

Average discharge. 28 years (1928-56), 289 cfs (209,200 acre-ft per year).

Extremes.--Maximum discharge during year, 3,860 cfs May 27 (gage height, 5.87 ft), from 

rating curve extended above 2,300 ofs by logarithmic plotting; minimum recorded, 

64 cfs Nov. 2 (gage height, 1.14 ft), but may have been less during period of ice 

effect.

1921-56: Maximum discharge, that of May 27, 1956; minimum recorded, 28 cfs 

Nov. 11, 1931.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. No regulation or diversion above station.

Revisions. WSP 573: Drainage area.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to May 3

1.2

1.3 

1.5 

1.9 

2.4 

3.0

74

92

135

263

500

875

1.3 

1.5 

2.0 

2.5

110

157

327

580

4 to Sept. 30

3.0 

4.0 

5.0 

5.8

910

1,730

2,800

3,770

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

104

104

102

98

108

104

110

114

112

110

135

128

128

119

112

108

104

98

100

102

98

100

100

92

*96

106

104

108

100

135

133

3,372

109

0.606

0.70

6,690

Nov.

121

108

130

119

128

102

124

100

117

140

130

100

105

110

95

90

85

85

160

210

200

180

165

150

145

140

130

125

120

120

3,834

128

0.711

0.79

7,600

Dec .

115

110

105

100

95

110

105

100

105

100

110

120

105

90

100

105

100

100

100

120

150

350

600

5(56"

420

370

350

300

270

250

230

5,885

190

1.06

1.22

11,670

Jan.

220

230

220

220

200

190

190

170

160

170

170

*160

160

150

160

170

160

150

140

140

130

130

130

125

120

115

115

115

115

115

105

4,845

156

0.867

1.00

9,610

Feb.

95

90

95

110

115

110

110

110

105

110

110

110

110

110

105

95

95

100

100

100

100

105

105

105

100

100

100

100

100

3,000

103

0.572

0.62

5,950

Mar.

100

105

105

105

100

95

100

110

105

100

95

95

100

loo

loo

100

105

110

110

110

115

115

120

140

150

150

140

130

130

130

130

3,500

113

0.628

0.72

6,940

Apr.

130

130

130

*130

130

130

130

128

133

148

167

185

201

240

279

308

344

415

494

591

688

786

812

812

812

760

727

779

720

694

12,133

404

2.24

2.51

24,070

May

708

766

786

854

903

959

980

1,090

1,200

1,300

1,210

994

896

938

1,150

1,360

1,640

1,950

2,270

2,560

2,850

2,990

3,230

3,640

3,290

3,220

3.670

3,360

3,200

3,080

3 150

60,194

1,942

10.8

12.44

119,400

June

3.260

3,140

2,970

2,840

2,490

2,110

1,870

1,880

2,020

2,130

2,120

1,980

1,880

*1,810

1,710

1,670

1,420

1,270

1,230

1,500

1,400

1,130

1,050

1,100

1,010

917

882

854

826

757

51,226

1,708

9.49

10.58

101,600

July

692

653

640

592

550

520

487

460

440

420

397

384

415

370

340

323

307

291

280

268

*265

257

247

243

243

233

236

233

240

230 n-i -z 

<- i;>

11,469

370

2.06

2.37

22,750

Aug.

200

194

194

191

188

185

182

182

179

182

174

168

163

160

165

157

154

150

147

144

142

140

*137

137

134

147

165

177

157

150

144

5,089

164

0.911

1.05

10,090

Sept.

140

134

132

132

130

132

130

132

128

125

125

125

123

123

123

123

121

121

121

119

119

119

119

123

123

121

121

*134

137

130

3,785

126

0.700

0.78

7,510

Calendar year 1955: Max 1,470 Min 75 Mean 247 Cfsm 1.37 In. 18.60 Ac-ft 178,500

Water year 1955-56: Max 3,670 Min 85 Mean 46o Cfsm 2.56 In. 34.78 Ac-ft 333,900

Peak discharge (base. 1,200 efe). May 10 (7 to 9 p.m.) 1,330 cfs (3.55 ft); May 27 (11 a.m.) 

3,860 cfs (5.87 ft;.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10, 11, Nov. 13 to about Mar. 20. No gageheight record Dec. 26 to Jan. 11, Mar. 7 to Apr. 3j discharge estimated on basis of weather records 

and records for Valley Creek at Stanley, Middle Pork Salmon River near Cape Horn, Johnson Creek at 

Yellow Pine, and other nearby streams.

467239 O-58 15
218 SALMON RIVER BASIN

Big Creek near Big Creek, Idaho

Location. Lat 45°07' , long 114°55' , in tffi£ sec. 36, T. 21 N. , R. 12 E., on left bank 

three-quarters of a mile downstream from Cabin Creek, if- miles southeast of Wallace 

Ranch, and 19 miles east of Big Creek Post Office.

Drainage area.--470 sq mi, approximately.

Records available. September 1944 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,950 ft (from river-profile map).

Prior to Oct. 22, 1948, staff gage at site a quarter of a mile downstream at different 

datum.

Average discharge. 12 years, 509 cfs (368,500 acre-ft per year).

Extremes.--Maximum discharge during year, 5,220 cfs May 24 (gage height, 7.39 ft); minimum, 48 cfs Dec. 14, result of discharge measurement, but may have been less during 

other period of ice effect.

1944-56: Maximum discharge, 5,800 cfs June 3, 1948 (gage height, 7.12 ft, from 

floodmark, former site and datum), from rating curve extended above 3,000 cfs by logarithmic plotting; minimum,that of Dec. 14, 1955.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are fair. No regulation. Small diversions above station for irrigation.

Rating tables, water year 1955-56, except periods or Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Apr. 2O to May 19)

Oct. 1 to May 19 May 20 to Sept. 30

1.6 

1.8 

2.0 

2.3

125

229

3.0 

4.0 

5.6

385

681

1,620

3,360

1.9 

2.2 

2.5 

3.0

157

257

405

760

4.0 

6.0 

7.2

1,660

3,720

5,010

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

9-

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

Ac -ft

Oct.

170

170

164

164

178

174

174

174

170

167

188

178

*184

181

178

170

167

160

160

164

160

160 

160

153

153

153

153

153

153

170

178

5,181

167

0.355

0.41

10,280

Nov.

164

128

178

178

192

167

164

153

164

188

221

160

107

174

109

100

123

b!70

b240

b280

b260

b220 

196

188

181

178

174

167

160

147

5,231

174

0.370

0.41

10,380

Dec.

150

147

142

109

b95

b!70

b!50

104

153

111

142

208

136

*b65

bllO

b!80

b!50

b!40

b!60

b200

b280

b800 

1,020

567

392

356

311

257

174

b!25

b!90

7,294

235

0.500

0.58

14,470

Jan.

b240

b240

b210

247

221

188

184

200

128

153

196

181

170

145

160

181

174

153

145

153

156

156 

150

147

b!25

bl!5

b!40

b!20

b!25

b!25

bllO

5,138

166

0.353

0.41

10,190

Feb.

blOO

b90

blOO

bl!5

b!50

b!25

b!20

bl!5

115

120

125

125

120

115

110

100

110

115

115

115

115

110 

110

110

110

105

105

105

105

3,255

112

0.238

0.26

6,460

Mar.

105

105

105

105

100

90

100

110

115

100

90

*b70

b95

b98

blOO

blOO

b!05

116

136

153

156

208 

257

368

560

631

500

398

356

339

350

6,221

201

0.428

0.49

12,340

Apr.

327

306

291

275

280

266 2§0~

275

296

404

606

743

824

941

1,060

1,140

1,080

1,000

1,140

1,350

1,540

1,660 

1,590

1,500

1,460

1,350

1,230

1,180

1,120

1,060

26,574

886

1.89

2.10

52,710

May

1,000

968

1,010

1,080

1,180

1,190

1,230

1,330

1,420

1,560

1,550

*1,400

1,260

1,160

1,140

1, <"/0

1,630

2,250

3,320

3,860

4,140

4,390 

4,480

4,960

4,290

4,270

4,730

4,050

3,800

*4,020

4,430

78,448

2,531

5.39

6.21

155,600

June

4.700

4,470

4,060

3,730

3,330

2,730

2,210

2,120

2,600

3,050

3,070

2,760

2,590

2,420

2,270

2,080

1,830

1,680

1,730

1,920

1,820

1,580 

1,500

1,530

1,530

1,430

1,420

1,440

1,450

1.500

70,350

2,345

4.99

5.57

139,500

July

1,150

1,060

1,020

*956

938

920

904

864

848

856

840

808

776

744

672

624

586

558

537

524

510

484 

465

447

435

411

400

394

417

394

572

20,914

675

1.44

1.65

41,480

Aug.

350

340

335

526

316

516

540

516

501

292

285

279

266

257

266

257

249

242

258

230

227

223 

219

223

223

257

425

372

506

283

261

8,816

284

0.604

0.70

17,490

Sept.

249

23f

230

227

225

219

*216

216

209

206

202

209

209

202

196

193

189

186

186

186

196

193 

189

186

183

180

183

196

195

186

6,076

205

0.452

0.48

12,050

Calendar year 1955: Max 3,290 Mln 65 Mean 446 Cfsm 0.949 In. 12.88 Ac-ft 322,800

Water year 1955-56: Max 4,960 Mln 65 Mean 665 Cfsm 1.41 In. 19.27 Ac-ft 483,000

Peak discharge (base. 2.OOP cfs).--May 24 (7 a.m.) 5,220 cfs (7.39 ft); June 11 (2 a.m.) 3,440 ofs 

(5.64 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Feb. 9 to Mar. 11; discharge estimated on basis of weather records 

and records for Johnson Creek at Yellow Pine, Panther Creek near Shoup, and other nearby streams.
SALMON RIVER BASIN 219

South Pork Salmon River near Knox, Idaho

Location. Lat 44°39' , long 115°42', in NW£ sec. 11, T. 15 N. , R. 6 E., on left bank 

800 ft downstream from Curtis Creek, 1 mile upstream from Warm lake Creek 1^ miles 

southwest of Knox, and 21 miles northeast of Cascade.

Drainage area. 92 sq mi, approximately.

Records available. September 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 5,090.31 ft above mean sea level, unadJusted. Prior to Oct. 22, 1942, staff gage at site 800 ft downstream at datum 2.09 ft 

lower.

Average discharge. 28 years, 144 cfs (104,300 acre-ft per year).

Extremes. Maximum discharge during year, 1,620 cfs May 27 (gage height, 6.33 ft); minimum, 28 cfs Nov. 8 (gage height, 2.44 ft), but may have been less during period of ice 

effect.

1928-56: Maximum discharge, that of May 27, 1956; minimum recorded, 14 cfs Nov. 3, 

1952 (gage height, 2.23 ft), but may have been less during period of ice effect.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are fair. No diversions above station.

Revisions (water years).--WSP 1043: 1943.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

2.5 

2.7 

3.0 

3.5

56

107

227

5.0 

6.2

397

B15

875

1,540

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

40

40

.38

38

45

42

43

44

44

44

55

*4B

49

4B

44

42

41

40

44

43

43

44

42

40

38

45

44

42

41

61 

50

1,358

43.8

0.476

0.55

2,690

Nov.

44

40

46

54

58

45

44

42

42

71

54

45

40

45

30

35

50

55

90

140

*130

88

73

66

62

61

59

58

56

55

1,778

59.3

0.645

0.72

3,530

Dec.

54

52

50

48

37

50

48

40

50

45

50

60

45

35

45

55

52

50

55

70

140

457

511

309

221

186

166

142

115

115 

120

3,473

112

1.22

1.40

6,890

Jan.

125

120

110

115

110

105

100

95

90

90

85

80

85

80

90

88

*83

80

75

78

76

74

74

7L

56

60

70

60

63

61 

55

2,604

84.0

0.913

1.05

5,160

Feb.

55

62

68

70

68

64

64

60

58

62

64

62

60

60

56

48

57

58

56

57

57

55

55

54

54

54

53

*53

53

------

1,697

58.5

0.636

0.69

3,370

Mar.

53

53

53

53

50

45

47

55

53

51

46

50

54

49

50

51

53

55

59

64

66

74

88

119

145

151

136

129

119

117

117

2,305

74.4

0.809

0.93

4,570

Apr.

Ill

105

101

103

109

107

107

109

125

*156

189

213

251

303

352

374

367

401

461

529

605

640

630

610

59O

547

542

520

465

432

10,154

338

3.67

4.10

20,140

May

413

409

424

494

529

511

547

605

595

67O

680

575

*516

477

494

570

695

853

1,050

1,260

,350

,420

,45O

,480

,370

,420

,550

,400

,360

,330 

* ,390

27,867

899

9.77

11.26

55,270

June

1,420

1,340

1,240

1,150

974

836

785

815

880

925

880

815

785

748

775

675

570

538

538

615

498

452

432

473

405

378

367

363

337

299

21,308

710

7.72

8.61

42,260

July

273

260

254

227

216

*207

194

185

180

175

165

155

150

140

130

120

115

110

105

100

97

93

90

88

86

84

83

82

86

81 

11

4,407

142

1.54

1.78

8,740

Aug.

73

71

69

68

67

67

67

65

64

64

62

61

*59

59

61

56

55

54

53

51

50

50

49

48

49

55

61

61

54

53 

50

1,826

58.9

0.640

0.74

3,620

Sept.

49

46

46

46

45

45

45

46

44

42

42

43

42

42

41

40

38

38

*38

38

41

41

41

40

38

38

38

49

45

42

1,269

42.3

0.460

0.51

2,520

Calendar year 1955: Max 952 Mln 27 Mean 126 Cfsm 1.37 In. 18.58 Ac-ft 91.2OO

Water year 1955-56: Max 1,53O Mln 30 Mean 219 Cfsm 2.38 In. 32.34 Ac-ft 158,800

Peak discharge (base. 600 cfs). Dee. 22 (12 p.m.) 726 cfs (4.72 ft); Apr. 21 (10 p.m.) 685 cfs 

(4.64 ft); May 11 (1 a.m.) 742 cfs (4.75 ft); May 27(9 a.m.) 1,620 cfs (6.33 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 2, 12-21, 23, Dec. 2-21, Dec. 29 to Jan. 20, 

Jan. 24 to Feb. 27, Mar. 5-8, 10-18. No gage-height record Nov. 16-18, Jan. 4-16, Feb. 22-27, 

July 8 to Aug. 12; discharge estimated on basis of weather records, and records for Johnson Creek 

at Yellow Pine and other nearby streams.
220 SALMON RIVER BASIN

Johnson Creek at Yellow Pine, Idaho

Location. Lat 44°58', long 115°30', in NE£ sec. 29, T. 19 N., R. 8 E., on right bank 

700 ft upstream from mouth and a quarter of a mile southwest of Yellow Pine.

Drainage area. 213 sq mi.

Records available. August 1928 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 4,657.70 ft above mean sea level, datum of 

1929, unadjusted.

Average discharge. 28 years, 337 cfs (244,000 acre-ft per year).

Extremes. Maximum discharge during year, 5,440 cfs May 27 (gage height, 7.64 ft); minimum, 41 cfs Nov. 16 (gage height, 0.92 ft).

1928-56: Maximum discharge, that of May 27, 1956; minimum, 21 cfs Nov. 30, 1954 

(gage height, 0.66 ft).

Remarks. Records excellent except those below 100 cfs, which are good. Small diversion 

from Johnson Creek basin to Deadwood River basin (see Remarks for Deadwood Reservoir 

near Lowman).

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

2.1

135

215

323

2.5 

3.0

7.2

507

770

1,420

2,300

4,870

Discharge cubic feet per second, water year October 1955 to September 1956

Day

I

2

5

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

77

76

74

72

80

79

80

84

84

86

94

91

94

*92

87

84

80

77

80

84

79

77

77

76

76

77

79

80

77

92

89

2,534

81.7

0.384

0.44

5,030

Nov.

86

76

89

98

104

84

37

80

84

116

145

89

72

89

56

56

91

91

124

182

177

147

131

124

120

118

114

110

110

108

3,158

105

0.493

0.55

6,260

Dec .

106

100

100

94

*71

100

96

80

98

86

98

112

86

64

19

110

102

96

106

120

154

307

357

288

252

245

232

215

175

177

191

4,507

145

0.681

0.79

8,940

Jan.

194

185

172

177

172

162

157

152

142

149

147

137

147

137

152

149

140

*135

129

135

131

131

131

127

102

106

127

108

114

110

98

4,355

140

0.657

0.76

8,640

Feb.

100

110

120

122

120

114

114

106

104

112

114

112

108

106

104

f

87

104

106

102

104

104

100

100

98

98

98

96

96

96

3,055

105

0.493

0.53

6,060

Mar.

96

96

94

94

91

80

84

98

94

91

82

86

*94

84

87

' f 87 1 89

91

/94

98

100

106

112

129

152

159

154

142

149

149

154

3,316

107

0.502

0.58

6,580

Apr.

147

145

145

147

147

142

T49

149

154

177

*215

235

270

332

406

453

468

522

634

781

933

1,060

1,100

1,100

1.120

1,040

981

999

921

867

15,939

531

2.49

2.78

31,610

May

843

861

897

981

1,020

1,100

1,140

1,250

1,280

1,400

1,310

*1,120

1,000

993

1,140

1,440

1,830

2,300

2,910

3,430

3,750

4,060

4,100

4,210

3,730

3,990

4,860

3,980

3,730

*3,770

4,180

72,605

2,342

11.0

12.68

144,000

June

4,250

3,940

3,560

3,270

2,740

2,280

2,060

2,280

2,620

2,820

2,620

2,380

,260

,130

,100

,900

,630

,540

,590

,930

" ,610

,420

,360

,490

,330

,240

,230

,220

,150

1.020

62,970

2,099

9.85

10.99

124,900

July

927

I9T

873

792

*737

704

660

623

597

576

541

507

487

453

425

393

366

344

327

311

300

280

266

255

248

238

232

228

238

225

206

14,256

460

2.16

2.49

28,280

Aug.

197

188

185

180

175

175

175

169

164

164

159

152

147

*142

147

142

135

133

129

127

122

120

116

116

114

124

162

169

145

133

127

4,633

149

0.700

0.81

9,190

Sept.

120

Tie

112

112

110

110

108

110

104

100

98

102

100

98

96

94

92

 91

91

91

94

94

94

92

91

89

89

98

100

98

2,994

99.8

0.469

0.52

5,940

Calendar year 1955: Max 2,460 Min 50 Mean 289 Cfsm 1.36 In. 18.44 Ac-ft 2O9.4OO

Water year 1955-56: Max 4,860 Min 56 Mean 531 Cfsm 2.49 In. 33.92 Ac-ft 385,400

Peak discharge (base. 1,800 cfs). May 27 (9 a.m.) 5,440 cfs (7.64 ft); June 10 (8:30 p.m.) 

3,160 cfs (5.80 ft).

* Discharge measurement made on this day.
SALMON RIVER BASIN 221

Salmon River near French Creek, Idaho

Location. Lat 45 0 26', long 115" 59', in sec. 8, T. 24 N., R. 4 E., on left bank 100 ft 

downstream from Fall Creek, 2? miles northeast of French Creek Post Office, and 

16 miles east of Riggins.

Drainage area. 12,270 sq mi, approximately.

Records available. October 1944 to September 1956 (discontinued).

Gage. Staff gage read once daily. Datum of gage is 1,908.92 ft above mean sea level, 

unadjusted. Since Jan. 31, 1952, supplementary staff gage 3 miles upstream.

Average discharge . 12 years, 10,520 cfs (7,616,000 acre-ft per year).

Extremes. Maximum discharge during year, 88,600 cfs probably on May 24 (gage height, 

34.85 ft, from floodmark); minimum daily, 2,600 cfs Feb. 2.

1944-56: Maximum discharge observed, that of May 24, 1956; minimum observed, 

1,790 cfs Dec. 27, 1952 (gage height, -1.30 ft, supplementary gage).

Revisions.--The figures of maximum discharge for some water years have been revised, 

as shown in the following table. They supersede figures published in the water-supply 

papers indicated.

WSP

1093 

1123 

1153 

1183

1217 

1397

Water 

year

1947 

1948 

1949 

1950

1951 

1955

Date

May 9, 1947 

May 29, 1948 

May 16, 1949 

June 21, 1950

May 28, 1951 

June 13, 1955

Discharge 

(cfs)

73,200 

82,800 

64,700 

59,900

60,300 

59,200

Gage height 

Ifeet)

30.7 

33.50 

27.86 

26.40

26.50 

26.18

Remarks.--Records good. Amount of water diverted above station for irrigation is a 

negligible percentage of total flow.

Revisions (water years). Revised figures of discharge, In cubic feet per second, for 

the water years 1947-51, 1955, superseding those published in WSP 1093, 1123, 1153, 

1183, 1217, 1397, are given herewith:

Date

1947

May 3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

Discharge

44,500

55,000

57,000

58,100

60,900

65,600

72,000

65,400

54,800

46,700

42,900

40,900

39,000

38,000

38,100

38,600

37,700

38,600

39,700

40,600

40,000

39,800

40,800

43,700

46,000

46,300

43,900

Date

1947-Con.

May 30

31

1948

May 18

19

20

21

22

23

24

25

26

27

28

29

30

31

June 1

2

3

4

5

6

7

8

9

Discharge

39,000

39,900

37,500

43,600

51,200

52,400

52,500

50,000

48,600

52,700

61,000

68 , 900

76,100

82 , 100

74,600

67 , 500

65,200

67,100

78,300

77,600

72,600

69,700

72,200

73,200

71,200

Date

1948-Con.

June 10

11

12

13

14

15

16

17

1949

May 11

12

13

14

15

16

17

18

19

20

21

22

23

26

27

28

29

Discharge

68,100

63,500

57,600

54,500

50,600

46,500

44,000

40,400

41,000

48,000

51,900

55,800

58,800

64,700

61,500

55,200

49,700

49,600

47,300

44,200

43,000

42,400

45,800

49,200

51,400

Date

1949-Con.

May 30

31

1950

June 1

2

3

4

5

6

7

8

9

13

15

16

17

18

19

20

21

22

23

24

25

30

Discharge

50,000

45,700

41,700

43,600

43,200

42,600

45,800

50, 600

51,400

49,500

43,300

42,200

43,100

47,000

51,500

51,800

53,300

57,000

58,800

54,800

50,200

49,400

45,700

43,200

Date

1951

May 11

13

19

20

21

22

23

24

25

26

27

28

29

30

31

1955

June 8

9

10

11

12

13

14

15

IB

17

Discharge

41,700

40,600

43,800

43,800

45,300

46,500

51,100

56,700

57,700

56, 100

56,100

60, 300

59,000

54,500

48,300

43,200

50,700

53,900

55,500

57,100

58,200

58,300

55,900

50, 000

43,300
222 SALMON RIVER BASIN 

Salmon River near French Creek, Idaho Continued

Month

Calendar year 1947 .............

May 1948.......... ...............

Calendar year 1948 .............

May 1949..... ....................

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

June 1950 ........................

Calendar year 1950. ............

Calendar year 1951 .............

Water year 1954-55. ............

Cfs-days

1,411,000 

4,191,340 

4,124,360

1,069,170 

1,482,300 

4,270,230 

4,207,910

1,262,400 

3,574,980 

3,562,410

1,375,900 

3,989,420 

4,145,450

1,225,700 

4,465,610 

4,370,280

1,139,900 

3,127,590

Maximum

72,000 

72,000 

72,000

82,100 

78,300 

82,100 

82, 100

64,700 

64,700 

64,700

58,800 

58,800 

58,800

60, 300 

60, 300 

60, 300

58,300 

58,300

Minimum

26,600 

3,000 

3,000

9,520 

23,900 

2,600 

2,330

18,400 

2,330 

Z,500

38,100 

2,400 

2,400

16,100 

2,200 

2,200

22,500 

2,050

Mean

45,520 

11,480 

11,300

34,490 

49,410 

11,670 

11,500

40,720 

9,794 

9,760

45,860 

10, 930 

11,360

39,540 

12,230 

11,970

38,000 

8,569

Per

square 

mile

3.71 

.936 

.921

Z.81 

4.03 

.951 

.937

3.32 

.798 

.795

3.74 

.891 

.926

3.22 

.997 

.976

3.10 

.698

Runoff

Inches

4.28

12.71 

12.50

3.Z4 

4.49 

12.93 

12.75

3.83 

10.84 

10.80

4.17 

12.09 

12.56

3.72 

13.55 

13.26

3.46 

9.48

Acre-feet

2,799,000 

8,314,000 

8,181,000

2,121,000 

2,940,000 

8,470,000 

8,346,000

2,504,000 

7,091,000 

7,066,000

2,729,000 

7,913,000 

8,222,000

2,431,000 

8,857,000 

8,668,000

2,261,000 

6,203,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

1Z

13

14

15

16

17

18

19

20

21

22 

23 

24 

25

Z6

27

28

29

30

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

3,900

3,830

a3,800

5.780

a3, 800

3,890

a3, 900

3,920

a3 , 950

3,980

a4,400

4,390

a4, 300

4,250

a4,250

4,240

a4, 100

3,930

a4,050

4,130

a4,000

3,940 

a3,950 

4,020 

a4,000

4,050

a4,100

4,180

a4,300

4,400

*4.600

126,330

4,075

0.332

0.38

250, 600

Nov.

,530

a ,400

,250

a ,500

,950

,680

,520

a ,400

,650

,810

a ,300

,270

a ,600

b4 , 000

a3,600

b3,300

b2,800

b3,000

a3,300

b4,500

a6,000

6,060 

a5,800 

a5, 500 

a5, 200

4,770

a5,200

5,100

a5, 000

4,880

-----

138,870

4,629

0.377

0.42

275,400

Dec.

a4,700

4,620

a4,500

*4,300

a4,000

3,660

3,930

4,140

a3, 900

b3,700

a4,000

4,140

4,170

b3,800

b3,200

b5,000

b3,400

b3, 800

b4, 200

4,690

a6, 000

10,200 

16, 100 

al4,000 

all, 500

9,520

8,750

8,210

7,500

6,990

a5, 800

184,420

5,949

0.485

0.56

365,800

Jan.

5,570

5,680

5,860

5,770

5,580

5,440

5,290

5,120

4,910

4,700

4,960

4,590

4,560

4,590

4,530

4,560

*4,690

4,720

4,690

4,660

4,640

a4,600 

4,530 

4,420 

4,330

b3, 700

b3, 500

b3, 500

b3,700

b3, 700

a5 , 100

144,190

4,651

0.379

0.44

286, 000

Feb.

b2,800

a2,600

b2,700

b3,000

a3, 400

b3,700

a3, 800

3,920

a3, 950

3,990

4,010

3,960

a3,940

3,920

a3,800

3,750

a3,700

3,700

a3, 600

3,580

a3, 650

3,760 

4,060 

4,400 

a4,300

a4, 200

*4, 080

a4,100

4,160

----~

108,530

3, 74Z

0.305

0.33

215,300

Mar.

a ,150

,200

,300

a ,400

,460

a4,300

4,180

3,750

a3,800

4,010

4,080

a3,800

a5, 500

a3, 600

3,600

a3, 600

a3,600

a3, 900

a4,500

a5,200

5,860

7,650 

8,890 

alO, 500 

13, 300

al5. OOP

12,500

alO,500

a8,200

*8,120

a8,000

189,450

6,111

0.498

0.57

375,800

Apr.

7,840

a7,400

6,860

a6, 700

6,470

a6,450

6.410

6,540

a6, 800

7,130

a9,000

11, 100

a 13, 000

14, 100

al6,000

18,700

a20, 000

19,400

19,500

a23,000

28,000

54,100 

a34, 000 

32, 700 

a51,000

*28,800

26,800

25, 600

24,100

23,100

-----

520, 600

17,350

1.41

1.58

*1,055

May

22,600

22.100

22,100

22,500

23,800

24,000

24,100

25,000

26,000

28,800

52,000

29,800

26,800

24,600

24, 400

25,500

30, 800

40, 600

55,300

64, 900

71,400

76,400 

81,200 

a87,000 

a85, 000

a82,000

a85,000

a82,000

76,300

80,700

82,700

tl,485 . 4

47,850

3.90

4.50

^942.5

June

84,500

79,700

76,500

75,600

71,900

60, 500

*52,500

49,200

50,100

55, 900

54,800

52,900

50,400

48,500

46,500

44,400

40, 100

56,100

*54,300

55, 300

35, 600

55,800 

50, 800 

29,800 

29,300

27,800

26, 700

26,400

25,700

24,800

------

$1,385.6

46,190

5.76

4.20

£2,748.3

July

25, 500

a22, 000

20, 800

al9,700

18,700

alS.OOO

17,500

al6,700

*16,100

al5, 500

15,200

al5, 000

14,700

al4,000

13,500

a!3,000

12,100

all, 700

11,300

alO,800

10,400

alO, 200 

9,970 

a9, 600 

9,560

a9, 100

8,890

a8,850

8,840

a8,800

8,750

422,160

15,620

1.11

1.28

837,300

Aug.

a8, 200

7,780

a7,500

7,240

a7,200

7,150

a7, 100

6,990

a6, 800

6,670

a6,600

6,520

a6,300

6,120

a5,900

*5 J 860

a5, 700

5,550

5,410

a5,300

5,150

a5, 100 

5,090 

a5,100 

5,540

a5, 700

6,460

a7 , 000

6,620

a6, 500

5,950

195,700

6,313

0.515

0.59

588,200

Sept.

a .600

,400

a ,250

,130

a ,000

,940

a ,800

,740

a ,750

,720

a ,700

,690

a ,650

,620

a ,580

,550

a ,500

,460

a ,400

,580

a ,500

,260 

a ,250 

,240 

a ,230

.220

a ,500

,400

a ,450

,480

138,970

4,632

0.578

0.42

275,600

Calendar year 1955: Max 58,500 Mln 2,550 Mean 8,896 Cfsm 0.725 In. 9.85 Ac-ft 6,440,000 

Water year 1955-56: Max 87,000 Mln 2,600 Mean 13,770 Cfsm 1.12 In. 15.27 Ae-ft 9,994,000

* Discharge measurement made on this day. 

t Expressed In thousands .

a Doubtful or no gage-height record; discharge 

or station at Whitebird. 

b Stage -discharge relation affected by ice.

basis of weather records and records
SALMON RIVER BASIN 223

Mud Creek near Tamarack, Idaho

Location. Lat 45°00', long 116°21 I , in sec. 9, T. 19 N., R. IE., on left bank 0.5 mile 

upstream from Little Mud Creek, 3-£ miles northeast of Tamarack, and 5 miles upstream 

from mouth.

Drainage area. 15.8 sq mi.

Records available. April 1937 to September 1939 (fragmentary), October 1939 to September 

1943 (discharge measurements only), September 1945 to September 1956.

Sage.--Water-stage recorder. Altitude of gage is 3,990 ft (by barometer). Prior to 

Sept. 18, 1945, staff gage at site 40 ft downstream at datum 1.21 ft higher.

Average discharge . 11 years (1945-56), 19.3 cfs (13,970 acre-ft per year).

Extremes.--Maximum discharge during year, 393 cfs Dec. 22 (gage height, 5.09 ft), caused 

by temporary storage behind ice jam upstream; maximum gage height recorded, 5.41 ft 

Dec. 32 (backwater from ice); minimum discharge, 0.9 cfs Nov. 12; minimum gage height, 

2.23 ft Sept. 15-20.

1937-38, 1945-56: Maximum discharge, 395 cfs Apr. 27, 1952 (gage height, 5.00 ft); 

maximum gage height recorded, that of Dec. 22, 1955; minimum discharge, 0.2 cfs 

Nov. 19, 20, 1952.

Remarks.--Records good except those below 10 cfs, which are fair, and those for periods 

of ice effect, which are poor. No regulation or diversion.

Revisions (water years).--WSP 1153: 1948.

Rating tables, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used Dec. 23-27, Mar. 29-31)

2.9

Oct. 1 to Mar. 31

1.8 3.1

3 3.5

3 4.0

4.5

Apr. 1 to Sept. 30

100

189

288

2.6

0.9

2.4

4.7

7.7

12

2.8 

3.0 

3.5 

4.0

112

202

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

g

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

1.8

TTs

1.8

Z.I

2.7

2.1

2.3

2.1

2.1

3.4

3.9

2.7

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.1

2.1

2.7

2.5

2.3

2.3

3.4

2.9

2.7

2.9

*4.2 372"

78.2

2.52

0.159

0.18

155

Nov.

3.2

2.5

2.3

3.4

3.9

2.7

2.3

2.0

1.8

275

2.3

2.1

2.0

2.0

1.8

1.8

2.4

3.0

2.2

5.5

9.0

7.0

6.0

5.5

5.0

5.0

5.1

5.2

5.5

5.5

110.5

3.68

0.233

0.26

219

Dec.

5.4

5.0

4.5

4.0

*4.0

4.5

4.5

4.5

4.5

4.5

4.2

4.5

4.3

4.0

4.0

4.0

4.3

4.5

8.0

20

40

200

170

92

62

56

59

*49

28

30

25

918.2

29.6

1.87

2.16

1,820

Jan.

20

17

15

13

12

11

10

9.5

9.0

9.0

8.5

8.8

9.0

9.0

9.0

8.2

*8.5

8.5

8.5

9.0

9.0

9.0

9.0

8.5

8.0

8.0

7.8

7.5

7.0

6.5

A g

6 . 5

299.3

9.65

0.611

0.70

594

Feb.

6.0

S7o

5.8

5.8

5.5

5.2

4.8

4.7

5.0

4.7

4.5

4.7

4.5

4.5

4.5

4.2

T72

4.5

4.5

4.5

4.8

5.0

6.0

6.0

5.8

*5.5

5.5

5.5

5.5

147.7

5.09

0.322

0.35

293

Mar.

5.5

5.8

6.0

6.0

5.5

5.5

5.8

6.0

6.0

5.5

5.0

BTo

5.0

5.0

5.0

5.0

5.5

6.0

6.5

7.0

8.0

11

20

45

110

121 ~94

74

70

68

67

800.6

25.8

1.63

1.88

1,590

Apr.

64

62

*64

70

71

69

67

70

84

106

128

167

178

190 182"

171

152

159

176

184

180

167

158

140

*131

117

108

100

91

86

3,692

123

7.78

8.69

7,320

May

82

78

82

126

150

152

158

163

159

158

167

T59

143

115

91

76

74

76

78

76

70

61

49

37

*29

26

32

24

20

18

1£

2,745

88.5

5.60

6.46

5,440

June

14

T4

12

13

13

12

10

9.7

8.9

8.5

8.1

7.7

7.1

7.1

13

14

13

10

9.7

12

10

8.9

8.5

*8.1

7.1

6.5

6.2

5.6

5.3

5.0

288.0

9.60

0.608

0.68

571

July

5.0

5.3

B73

5.0

4.7

4.5

4.2

4.0

3.8

3.8

3.6

3.6

3.3

3.3

3.6

3.1

2.9

2.6

2.6

2.6

2.6

2.4

l^-

272

2.2

2.2

2.4

2.9

2.6

2.6

*2.4

103.5

3.34

0.211

0.24

205

Aug.

2.4

2.4

2.6

2.4

2.2

2.4

2.6

2.4

2.0

2.0

1.8

1.7

1.6

1.6

1.6

1.6

1.4

1.4

1.2

T74

1.4

1.4

1.4

 1.2

1.8

376" 4.5

2.6

2.0

1.7 

1.6

61.9

2.00

0.127

0.15

123

Sept.

1.4

1.4

1.2

T72

1.2

1.2

1.2

1.2

1.2

1.2

1.4

1.4

1.4

1.4

1.4

1.2

1.2

1.2

1.2

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.6

 1.7

T77

1.7

40.7

1.36

0.086

0.10

81

Calendar year 1955: Max 200 Min 1.0 Mean 14.4 Cfsm 0.911 In. 12.32 Ac-ft 10,390

Water year 1955-56 : Max 200 Min 1.2 Mean 25.4 Cfsm 1.61 In. 21.85 Ac-ft 18,410

Peak discharge (base, 100 cfs). Dec. 22 (4 p.m.) 393 cfs (5.09 ft); Mar. 25 (time and discharge 

unknown); Apr. 14 (6 p.m.) 224 cfs (4.11 ft); May 7 (10 p.m.) 171 cfs (3.84 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 13 to Dec. 22, Dec. 28 to Jan. 3, Jan. 8-10, 

Jan. 12, Jan. 14 to Mar. 25.
224 SALMON RIVER BASIN

Salmon River at Whitebird, Idaho

Location. Lat 45°45', long 116°20', in sec. 22, T. 28 N., R. 1 E., on left bank just upstream from Whitebird Creek, half a mile downstream from Canfield-Joseph highway bridge

and 1 mile southwest of Whitebird. Records include flow of Whitebird Creek.

Drainage area. 13,550 sq mi, approximately, includes that of Whitebird Creek. 

Records available.--August 1910 to September 1917, October 1919 to September 1956.

Sage. Water-stage recorder. Datum of gage is 1,412.65 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. Aug. 18, 1910, to Sept. 30, 1917, and Oct. 1, 

1919, to Sept. 13, 1920, staff gages at site 600 ft downstream at different datum. 

Sept. 14, 1920, to Jan. 2, 1931, chain gage on highway bridge 200 ft upstream at datum 

10 ft higher.

Average discharge.--44 years, 10,831 cfs (7,841,000 acre-ft per year).

Extremes.--Maximum discharge during year, 106,000 cfs May 24 (gage height, 33.05 ft); minimum, 2,830 cfs Feb. 3; minimum gage height, 11.79 ft Nov. 17.

1910-17, 1919-56: Maximum discharge, that of May 24, 1956; minimum, 1,580 cfs 

Dec. 11, 1932 (gage height, 10.23 ft), from rating curve extended below 2,200 cfs.

Maximum stage known, about 37.5 ft, June 1894 present datum (discharge, 120,000 cfs).

Remarks. Records excellent. Amount of water diverted above station for irrigation is a 

negligible percentage of total flow.

Revisions (water years). WSP 753: 1932. WSP 1043: Drainage area.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tbtal

Mean

Cf srn

In.

Ac-ft

Oct.

,340

,310

,270 

,290

,390

,430

,410

,430

,520

,740

,120

,060

,010

,010

,970

,830

,680

,570

,480

,500

,480

,430

,470

,450

,410

,560

,590

,650

,700

,860

* ,19O

14 ,150

,618

0.341

0.39

283,900

Nov.

5,210 

5,O2O

4 ,'§40 

4,840

5,540

5,710

5,330

5,1OO

4,860

5,120

6,180

6,180

5,380

4.7OO

4,140

3,590

3,110

3,340

4,470

6,240

8,080

8,550

7,830

6,940

6,320

6,100

6.2OO

6, 100

5,920

5,760

-----

166,500

5,550

0.410

0.46

330,200

Dec.

5,650 

5,520

5,400 

*5,170

4,920

4,470

4,260

4,830

4,680

4,480

4Z740

-4^660

- irrl4O

*»830

-3", 7 50

5^400

3,930

4,700

4,990

5,710

7,610

14,000

24.600

21,200

16,900

13,100

11,900

11,000

9,390

7,940

6,790

239,660

7,731

0.571

0.66

475,400

Jan.

6,560 

6,960

7,040 

6,890

7,040

7,060

6,830

6,460

6,180

5,840

5,650

5,720

5,820

5,690

5,760

*6,160

6,100

6,O8O

5,980

5,610

5,460

5,540

5,590

5,630

5,290

4,540

3,920

4,050

4,220

4,200

5,750

177,720

5,735

0.425

0.49

552,500

Feb.

5,180 

2.920

5,060 

5,460

5,950

4,270

4,450

4,610

4,520

4,580

4,510

4,270

4, 540

4,650

4,660

4,120

3,930

3,920

5,750

5,980

4,240

4,650

5,160

5.420

5,250

5,010

4,810

*4,700

4,610

______

-----

124,720

4,301

0.317

0.34

247,400

Mar.

4,610 

4,650

4,860 

5,120

5,170

4,990

4,570

4,510

4,520

4,480

4,610

4,270

4,080

4,100

4,200

4,170

4,220

4,540

5,210

6,180

7,510

9,290

10,400

15,000

16,000

18.200

16,500

15,800

11,700

no, 800

10,600

250,260

7,428

0.548

0.65

456,700

Apr.

10,600 

10,100

9,380 

8,900

8,560

8,570

8,240

8,100

8,140

8,700

10.600

15.500

15.400

16,8OO

18,900

22.100

25,500

22.9OO

23,300

26,000

30 , 600

55,400

58.500

38,000

35.900

35,600

*51,400

29,800

28,100

26,100

______

609,290

20,510

1.50

1.67

*1,209

May

24,000 

22,800

22,700 

24,1OO

26,900

27,800

28,600

50,700

33,200

35,700

37,100

35,000

50,900

27.90O

26,600

28,000

54,400

45,600

61.5OO

76,000

84,400

91,200

*95,700

104jJX>0

103,000

98,900

1O3.0OO

*99,000

93,600

91,200

95,700

*1,757

56,050

4.14

4.77

*3,445

June

98,000 

97,400

92, 400 

87,200

80,300

70,800

61,800

5 6, 800

57,700

61,600

*63,200

60,600

57,000

54,200

52,800

51,300

46,300

41,300

38 , 6OO

38,800

39,600

37 , 000

35,800

52,400

32,100

3O.5OO

29,400

28,900

28,400

26.900

tl, 587.1

52,900

3.90

4.36

*5,148

July

24.9QO

22.60O 

21,500

2O,000

19,200

18,500

17,800

*17,200

16,700

16,500

16,100

15,700

15,700

14,900

14,OOO

13,300

12,600

12,100

11,600

11,200

' 10,90d

10,500

10,200

9,880

9,630

9,360

9,170

9,170

9,150

9,000

452,360

14,590

1.08

1.24

897,200

Aug.

8,650 

8,280

8,010 

7,790

7,610

7,440

7,420

7,480

7,230

7,040

6,890

6.680

6,480

6,320

6.2OO

*6,140

6,080

5,9OO

5,740

5,610

5.500

5,380

5,250

5,250

5,510

5,780

6,540

7,970

7,440

6,810

6,480

206.480

6,661

0.492

0.57

409,500

Sept.

6,120 

5,880

,670 

,460

,360

,270

,170

,100

,040

,950

,920

,810

,840

,920

,840

,740

,660

,610

,540

,480

,480

,560

,500

,47O

,47O

,450

' ,45O

,570

* ,720

,750

146,780

4,895

0.561

0.40

291,100

Calendar year 1955: Max 66,4OO Min 2,860 Mean 10,280 Cfsm 0.759 In. 10.51 Ac-ft 7,446,OOO 

Water year 1955-56: Max 104,OOO Min 2.92O Mean 15,900 Cfsm 1.17 In. 15.98 Ao-ft 11,55O,OOO

* Discharge measurement made on this day.

* Expressed in thousands.
SALMON RIVER BASIN 225

Deer Creek near Winchester, Idaho

Location.--Lat 46°07', long 116"45' , in SE^ sec. 18, T. 32 N., R. 3 W., on right bank 

300 ft downstream from proposed dam site, an eighth of a mile downstream from West 

Pork, 4| miles upstream from East Pork, and 10 miles southwest of Winchester.

Drainage area. 14.5 sq mi.

Records available. October 1951 to November 1956 (discontinued).

Sage. Water-stage recorder. Altitude of gage is 4,380 ft (by barometer).

Extremes.--1955-56: Maximum discharge during water year, 209 cfs Apr. 16 (gage height, 

3.75 ft), from rating curve extended above 110 cfs; maximum gage height recorded, 

4.46 ft probably on Mar. 26 (backwater from ice); minimum discharge, 0.6 cfs Oct. 3, 

but may have been less during period of ice effect.

1956: Maximum daily discharge during period October to November, 3.5 cfs Nov. 6; 

minimum, 0.6 cfs Oct. 3-9 (gage height, 1.70 ft).

1951-56: Maximum discharge, that of Apr. 16, 1956; maximum gage height recorded, 

5.03 ft Apr. 9, 1955 (backwater from ice); minimum discharge recorded, 0.2 cfs Sept. 

Oct. 4, 1952 (gage height, 1.62 ft).

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

which are poor.

Discharge, in cubic feet per second, 1956

Day

1

2

3

4

5

6

7

3

Oct.

0.7

.7

.6

.6

.6

.6

.6

.6

Nov.

1.2

1.3

1.3

1.4

1.3

3.5

2.9

2.2

Day

9

10

11

12

13

14

15

16

Oct.

0.6

.9

1.1

1.1

1.0

.8

.8

.8

Nov.

2.1

2.0

2.3

2.4

3.0

3.0

2.0

2.3

Day

17

18

19

ZO

21

22

23

Z4

Oct.

0.8

1.8

1.6

1.1

.9

.8

.9

1.0

Nov.

2.5

2.2

2.0

2.3

2.3

2.2

2.1

2.0

Day

25

26

27

28

29

30

31

Cubic feet per second per square mile ..........................

Runoff in acre-feet ...................... . .............. .

Oct.

1.1

1.3

.6

.5

.4

.4

.3

61

Nov.

2.0

2.1

Z.I

1.9

1.9

2.0

1Z7

Note. Stage-discharge relation affected by ice Oct. 22-25, 27-29, Oct. 31 

to Nov. 1, Nov. 3-6, 8, 9., 12-15, 17-30.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

0.7

.7

.6

1.3

2.5

1.1

.9

.8

.8

4.9

2.9

1.5

1.2

1.0

1.0

1.1

1.0

1.0

1.0

1.0

1.0

1.1

1.1

.9

.9

1.3

1.3

1.3

1.9

3.5

2.0

43.3

1.40

0.097

0.11

86

Nov.

4.0

3.1

2.7

5.4

4.8

*4.7

4.6

3.5

4.0

5.5

7.0

570

3.5

2.5

2.0

1.5

2.0

3.0

3.5

4.0

3.5

3.0

2.5

2.5

2.5

2.7

3.0

3.0

3.0

2.8

104.8

3.49

0.241

0.27

208

Dec.

2.8

Z.7

Z.5

2.3

2.0

2.0

2.0

Z.I

2.1

2.1

2.2

2.5

3.0

2.5

2.3

2.5

*2.5

2.5

3.5

8.0

20

50

40

20

17

16

18

13

10

9

8

275.1

8.87

0.612

0.71

546

Jan.

8

8.5

8

7

6

5.5

5

4.5

4.3

4.0

3.8

3.5

3.4

3.3

3.3

5.5

5.0

4.5

4.0

3.8

3.7

3.7

3.5

3.5

3.0

3.0

3.0

3.0

3.0

2.5

zTs

135.3

4.36

0.301

0.35

268

Feb.

2.5

3.0

3.Z

372

3.2

3.0

2.6

2.5

2.5

2.4

2.4

2.4

2.4

.2.3

2.0

1.7

2.0

2.1

2.2

2.2

2.2

2.3

2.4

2.3

2.2

2.1

2.1

2.2

2.2

------

69.8

2.41

O.166

0.18

138

Mar.

2.3

2.4

2.5

2.4

2.3

2.2

2.2

2.3

2.2

2.2

2.1

2.0

272

2.1

2.1

2.2

2.5

3.5

4.5

5.5

7.0

10

25

40

65

80

65

*60

55

50

47

555.7

17.9

1.23

1.43

1,100

Apr.

43

42

39

38

11

37

37

39

53

86

117

141

161

175

193

208

197

180

176

178

178

180

176

166

141

115

100

84

71

59

3,447

115

7.93

8.84

6,840

May

*50

46

44

56

56

52

52

62

66

l^L

69

62

50

44

38

32

31

26

25

23

21

18

20

33

24

25

*32

29

26

24

21

1,232

39.7

2.74

3.16

2,440

June

21

20

16

£0

18

14

13

11

10

8.7

8.7

8.4

7.6

7.6

33

38

29

*22

23

27

23

20

18

17

15

13

12

11

9.6

9.1

503.7

16.8

1.16

1.29

999

July

8.7

8.7

9.1

7.6

7.6

6.9

6.1

5.4

4.8

*4.Z

6.1

4.5

4.2

4.0

3.7

3.3

3.1

2.9

2.7

2.7

2.7

2.5

2.3

2.2

2.0

1.9

1.9

1.8

1.9

1.8

1 . 6

128.9

4.16

0.287

0.33

256

Aug.

.6

.6

.6

.5

.5

.5

.4

.3

.3

.2

_ 2

.1

.1

.1

.3

.5

.3

. 2

.1

.0

.0

.0

.0

* .0

.1

.0

.8

.9

.0

.8

.5

49.5

1.60

0.110

0.13

98

Sept.

.4

.4

.4

.3

.3

.4

.2

.2

.1

.1

1.0

.9

.9

.8

.8

.8

.8

.8

.8

.9

1.1

1.0

1.0

.9

.8

.8

.9

1.0

.9

*.8

30.5

1.02

0.070

0.08

60

Calendar year 1955: Max 170 Min 0.3 Mean 11.4 Cfsm 0.786 In. 10.65 Ac-ft 8,240

Water iter year year 1955-56: 1955-56: Max Max 208 208 Min Min 0.6 0.6 Mean Mean 18.0 18.0 Cfsm Cfsm 1.24 1.24 In. In. 16.88 16.88 Ac-ft Ac-ft 13,040 13,040

Peak discharge (base, 50 cfs). Dec. 22 (time and discharge unknown); Mar. 26 (time and discharge 

unknown); Apr. 6 (9 a.m.) 64 cfs (2.82 ft); Apr. 16 (4 to 6 a.m.) 209 cfs (3.75 ft); May 4 

(5 to 7 p.m.) 67 cfs (2.88 ft); May 10 (3 to 5 p.m.) 79 cfs (2.95 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Oct. 31, Nov. 1, Nov. 4 to Mar. 29. No gageheight record Dec. 28 to Jan. 8, Jan. 11-14, Jan. 20 to Mar. 27; discharge estimated on basis of 

weather records, rainfall-runoff relations,and records for Mud Creek near Tamarack, Weiser River 

near Tamarack, and South Pork Clearwater River near Elk City.
226 GRANDE RONDE RIVER BASIN

Grande Ronde River near Hilgard, Oreg.

Location. Lat 45°19' , long 118°16' , near center of sec. 11, T. 3 S., R. 36 E., on right 

bank half a mile upstream from lower reservoir site of Bureau of Reclamation, threequarters of a mile upstream from Spring Creek, and 3 miles southwest of Hilgard.

Drainage area. 489 sq^mi.

Records available. January 1938 to September 1956 (discontinued). Monthly discharge 

only prior to October 1945, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 3,058.05 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Sept. 16, 1946, at site 800 ft 

upstream at different datum.

Average discharge. 18 years (1938-56), 274 cfs (198,400 acre-ft per year).

Extremes. Maximum discharge during year, 5,060 cfs May 8 (gage height, 6.48 ft); minimum, 

11 cfs Nov. 2 (gage height, 0.75 ft).

1938-56; Maximum discharge, that of May 8, 1956; minimum, 6 cfs Aug. 10, 12-29, 

Sept. 1-4, 1940.

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

and those above 2,000 cfs, which are fair. Several small diversions for irrigation 

above station. Since 1909, city of La Grande has diverted about 3 cfs for municipal 

use at Beaver Creek Reservoir (capacity, about 900 acre-ft).

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.0 

1.2

Oct. 1 to Dec. 20

14 1.5 147

2.O 330

2.5 560

0.5

.7

1.0

1.5

2.0

220

410

21 to Sept. 30

3.0 920

4.0 1,570

5.O 2,540

6.0 4,060

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Ocb.

22

21

21

23

30

31

26

26

26

34

45

39

38

33

30

28

26

25

25

25

25

26 

25

24

24

25

28

28

31 

36

 

898

29.0

1,78U

Nov.

*42

20

38

45

50

46

46

48

45

46

58

32

b30

b22

*b!8

*b30

b40

b50

b46

b60

b55

b50 

b46

b44

b50

blOO

445 342"

270 

232

2,446

81.5

4,850

Dec.

229

201

187

117

74

180

147

120

144

123

167

552

*490

218

b200

b250

270

208

208

282

*1,480

5,030 

1,630

932

710

685

575

434

276

b!60

b200

14,479

467

28,720

Jan.

283

252

244

252

211

199

196

179

123

187

166

142

168

158

354

962

*800

640

522

508

446

430 

*422

354

b200

b!70

b200

b!60

b!70

b!30 

bllO

9,338

301

18,520

Feb.

*blOO

110

130

170

200

220

190

170

150

180

180

200

210

180

150

80

120

160

180

200

220

240 240"

220

210

210

200

190

180

5,190

179

10,290

Mar.

180

230

240

230

20O

180

171

174

179

166

150

130

140

150

150

180

220

360

600

900

1,100

1,400 

1,700

2,000

2,300

2,700

2,100

1,500

1,500

1,600

1,700

24,530

791

48,650

Apr.

1,400

1,100

1,000

1,000

1,100

950

1,000

950

1,100

1,500

1,800

2,100

2,200

2,260

2,290

2,270

1,960

1,710

*1,700

1,860

2,150

2,360 

2,210

1,920

1,640

1,460

1,380

1,250

1,110

968

47,698

1,590

94,610

May

872

830

830

,170

,300

,510

,730

,700

,410

,820

,520

* ,080

,660

,360

,200

,170

,270

,440

,570

,460

,360

,270 

,470

,590

,260

,310

,900

,660

,470

,310

,360

49,862

1,608

98,900

June

1,390

1,260

1,090

1 , 070

926

806

700

*620

555

518

426

334

302

346

536

500

422

350

378

442

342

306 

290

269

241

220

202

190

176

166

15,373

512

30,490

July

155

150

150

145

140

135

125

118

111

111

115

111

109

115

102

*93

85

75

70

70

65

65 

60

55

55

55

50

50

48 

46" 46

2,880

92.9

5,710

Aug.

46

50

52

51

54

46

44

*40

36

35

34

32

32

32

34

31

30

30

29

27

26

26 

26

29

31

45

95

73

52

*45

1,252

40.4

2,480

Sept.

36

34

32

32

32

32

30

29

26

26

26

26

26

26

25

24

24

*24

25

26

27

27

27

27

25

25

27

27

27

827

27.6

1,640

Calendar year 1955: Max 3,030 Min 13 Mean 227 Ac-ft 164,600

Water year 1955-56: Max 3,700 Min 18 Mean 478 Ac-ft 346,600

ase, 1,500 cfs). Dec. 22 (12:30 a.m.) 3,720 cfs (5.81 ft); Mar. 25 (E

(5.80 f t) ; Apr. 15 (l to 2 a.m.) 2,460 cfs (4.93 ft); Apr. 22 (4 to 7

; May 8 (6 p.m.) 5,060 cfs (6.48 ft); May 23 (9 p.m.) 2,170 cfs (4.67

Peak discharge (ba 

.) 3,700

(7 to 8 a.m.) 2,08o'efs'' (4.58 ftj/June 1 ^7:30 p.m.) iieso'cfs (4.10 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Mote.--Ho gage-height record Feb. 2 to Mar. 6, Mar 

of recorded range In stage, weather records, and reci

.bout

ft); May 27

12 to Apr. 13; discharg

ds for station at La Grande.

timated on basis
GRANDE RONDE RIVER BASIN 227

Grande Ronde River at La Grande, Oreg.

Location. Lat 45°21', long 118°08 I , in sec. 36, T. 2 S., R. 37 E., on left bank 2 miles 

northwest of La Grande and 5 miles downstream from Flvepoint Creek.

Drainage area. 678 sq mi.

Records available. October 1903 to September 1915, February 1918 to September 1923, 

October 1925 to September 1956. Monthly discharge only for some periods, published 

in WSP 1317. Published as "at Hilgard" 1903-15.

Gage. Water-stage recorder. Datura of gage is 2,830.86 ft above mean sea level, datura 

of-1929, supplementary adjustment of 1947. Nov. 6, 1903, to Sept. 30, 1915, staff 

gage at site 5 miles upstream, 1,000 ft downstream from Fivepoint Creek, at various 

datums. Feb. 16, 1918, to June 28, 1923, and Oct. 1, 1925, to Nov. 24, 1931, staff 

gage at site 1 mile downstream at various daturas.

Average discharge. 48 years (1903-15, 1918-23, 1925-56), 383 cfs (277,300 acre-ft per 

year).

Extremes. Maximum discharge during year, 6,360 cfs May 8 (gage height, 8.17 ft); minimum, 

not determined; occurred during period of ice effect.

1903-15, 1918-23, 1925-56: Maximum discharge, 8,880 cfs Mar. 18, 1932 (gage height, 

8.90 ft); minimum, 3.9 cfs Aug. 26, 1940 (gage height, 1.23 ft).

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

which are fair. Small diversions for irrigation above station. Since 1909, city of t 

La Grande has diverted about 3 cfs for municipal use at Beaver Creek Reservoir (capacity, about 900 acre-ft).

Revisions (water years).--WSP 768: 1933. WSP 1397: 1904-11, 1913, 1915, 1919-20, 1922- 

23, 1926, 1929-31, 1936-37, 1939, 1942.

Rating tables, water year 1955-56, except periods of ice effect (gage

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

(Shifting-control method used Feb. 6, 1, 10-15, Feb. 17

to Mar. 9, Mar. 14-17)

Oct. 1 to Mar. £6 Mar. 27 to Sept. 30

1.5 

1.7 41

95

2.5 240

3.0 460

4.0 1,090

5.0 1,990

7.0 4,500

1.2 

1.4 

1.7 

2.0 

2.5

170

390

3.0 660

4.0 1,380

5.0 2,300

8.0 6,110

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

AC- ft

Oct.

27

26

25

2T

30

36

31

30

30

36

48

47

40

39

34

33

31

30

30

30

30

31

31

30

30

30

30

30

33

37 

56

1,027

33.1

2,040

Nov.

*50

35

35

53

58

60

56

60

53

56

67

46

b42

b4O

»b^2

»b28 

b40

b50

b80

b75

b75

b7O

b70

b80

blOO

b!50

545 455"

378

320

3,244

108

6,430

Dee.

312

284

256

202

145

256

305

166

193

163

226

626

*704

329

342

383 

342

276

248

312

*1,840

*4,050

1,980

1,300

947

905

807

590

396

264 

396

19,425

627

38,530

Jan.

435

360

300

288

260

240

236

226

166

208

205

181

236

219

767

*1,680 

1,270

975

788

734

650

620

*608

510

b300

b250

b270

b220

b230

b!80 

bl50

13,762

444

27,300

Feb.

*b!30

b!50

b200

b250

b300

352

324

b250

b230

272

268

304

316

272

256

b!20 

208

256

276

296

320

430

415

338

316

312

304

296

276

8,037

277

15,940

Mar.

276

374

445

378

316

284

*276

272

276

b250

b220

b200

b210

226

226

244 

329

634

1,180

1,370

1,770

2,310

E,620

*3,530

3,990

*4,240

2,800

2,230

2,230

2,460 

2,540

38,706

1,249

76,770

Apr.

2,040

1,680

1,510

1,550

1,6OO

1,420

1,520

1,490

1,740

2,250

2,830

3,260

3,380

5,440

3,400

3,210

2,830

2,510

*2,520

2,790

3,150

3,350

*3,150

2 , 800

2,450

2,200

2,090

1,940

1,740

1,540

71,380

2,379

141,600

May

1,400

1,320

1,320

1,770

1,990

2,220

2,450

*4,700

5,020

3,980

3,530

2,850

2,360

1,970

1,750

1,680 

1,780

1,960

2,120

1,990

1,850

1,710

1,840

2,040

1,640

1,630

2,270

2 , 000

1,810

1,630 

»1,690

68,270

2,202

135,400

June

1,730

1,600

1,360

1,350

1,160

1,020

885

794

726

672

618

535

480

490

a650

a700 

aSOO

a550

a600

a650

a550

aSOO

a460

a440

a420

a400

a380

335

286

258

21,199

707

42,050

July

237

22^

*221

202

194

180

161

148

136

131

129

129

123

134

118

*104 

95

87

82

78

76

70

67

62

61

56

56

55

55

53

51

3,576

115

7,090

Aug.

48

51

53

55

59

58

59

*52

50

46

44

43

41

38

40

39 

36

34

32

31

31

303"o

30

31

41

82

83

36

*47 

44

1,414

45.6

2,800

Sept.

41

39

38

37

36

36

35

33

31

31

30

30

30

30

30

28 

*28

29

29

a 30

a32

a32

a32

a30

a30

a30

a32

a32

a32

a32

965

32.2

1,910

Calendar year 1955: Max 4,030 Mln 14 Mean 327 AC-ft 236,900

Water year 1955-56; Max 5,O20 Min 22 Mean 686 AC-ft 497,900

Peak discharge (base, 1,900 cfs).--Dec. 22 (3 a.m.) 4,400 cfs (6.93 ft); Mar. 26 (1 a.m.) 

5,370 cfs (7.58 ft ; Mar. 30 (11 p.m.) 2,930 cfs (5.60 ft); Apr. 13 (3:30 a.m.) 3,820 cfs (6.35 ft); 

Apr. 22 (8:30 a.m. 3,500 cfs (6.09 ft); May 8 (8 p.m.) 6,360 cfs (8.17 ft); May 23 (11:30 p.m.) 

2,530 cfs (5.23 ft ; May 27 (10:30 a.m.) 2,450 cfs (5.15 ft); June 1 (3:30 p.m.) 1,960 cfs 

(4.64 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage, weather records, 

and records for station near Hilgard. b Stage-discharge relation affected by ice.
GRANDE RONDE RIVER BASIN

Catherine Creek near Union, Oreg.

Location. Lat 45°09'20" ) long 117°46'40", in SE£ sec. 2 , T. 5 S. , R. 40 E., on right 

bank 3 miles downstream from Little Catherine Creek and 6 miles southeast of Union.

Drainage area.--105 sq mi.

Records available. May 1906 to May 1907 (gage heights only), August 1911 to December 

1912, March to September 1915, February 1918 to September 1919, October 1925 to September 1956. Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 3,081.76 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947 (Oregon State Highway Department benchmark). 

Prior to Nov. 28, 1938, staff gages at several sites within if miles of present site 

at various datums. Nov. 28, 1938, to May 16, 1939, water-stage recorder at site 

400 ft downstream at datum 4.29 ft lower.

Average discharge.--33 years (1911-12, 1918-19, 1925-56), 119 cfs (86,150 acre-ft per 

year).

Extremes. Maximum discharge during year, 1,060 cfs May 23 (gage height, 3.75 ft); minimum, not determined; occurred during period of ice effect.

1906-7, 1911-12, 1915, 1918-19, 1925-56: Maximum discharge, 1,740 cfs May 27, 1948 

(gage height, 4.57 ft); minimum, 6.5 cfs Feb. 4, 1955 (gage height, 0.44 ft), result 

of freezeup.

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

Diversions above station for irrigation of about 130 acres; since 1937, some water 

diverted to Big Creek, in Powder River basin, for irrigation of up to 3,300 acres. No 

known regulation.

Revisions (water years). WSP 1397: 

1941-43, 1950.

1912-13, 1919, 1926, 1928-33, 1937, 1939, 1940(M),

Rating tables, water year 1955-56, except periods of Ice effect (gage 

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

Oct. 1 to May 23 

20

May 24 to Sept. 30

0.6

.9 47

1.2 86

1.5 142

2.0 

2.5 

3.0 

3.5

1.1

1.5

2.0 290

2.5 460

3.0 680

3.5 940

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

28

28

27

29

34

31

30

30

29

35

3E

32

34

32

30

30

28

28

28

27

27

27

27

26

26

28

29

30

32

4634-

937

30.2

1,8SO

Nov.

32

*27

32

34

39

34

35

33

38

85

54

b40

b34

b30

*b!7

b24

b34

b44

b55

b50

b46

b44

b44

b46

b50

b60

b70

*51

48

46

1,274

42.5

2,530

Dec.

46

44

43

40

b36

b38

39

b38

41

b36

37

b40

b24

*bll

b25

44

48

44

51

57

96

181

170

126

105

107

116

100

b90

b50

b70

1,993

64.3

3,950

Jan.

bSO

b75

b60

55

52

50

49

47

45

44

44

45

50

49

131

202

T67

140

120

107

94

91

89

b60

*b40

b50

b47

b44

b40

b30 b32~

2,229

71.9

4,420

Feb.

b36

b40

b44

b50

bSO

*b55

b50

b46

b46

b44

b44

b42

b38

b34

b30

b!9

b26

b34

b40

b46

b48

bSO

b55

bSO

b48

b46

b46

b44

b42

_ . _ _ ^ ,

1,243

42.9

2,470

Mar.

37

42

45

45

45

44

50

*43

41

39

b35

b31

b45

b42

40

39

43

63

105

128

142

161

183

250

326

'258" 344

208

183

178

174

3,409

110

6,760

Apr.

163

148

142

140

140

136

134

130

142

192

248

314

350

*396

444

440

392

402

456

558

660

730

725

*640

549

496

476

452

406

371

10,972

366

21,760

May

350

344

323

436

460

452

456

492

516

516

464

410

368

347

360

420

536

685

834

864

*840

780

846

*922

745

720

755

*660

640

635

675

17,851

576

35,410

June

675

564

520

484

400

353

320

317

347

362

338

311

290

305

320

290

254

239

257

257

233

224

218

206

192

182

182

185

178

161

9,164

305

18,180

July

150

150

*146

135

129

125

118

112

108

105

146

110

116

108

98

*91

84

80

81

80

80

74

68

66

63

62

62

62

66

56

53

2,984

96.3

5,920

Aug.

53

53

51

49

48

48

46

*43

42

39

39

37

37

36

36

37

35

34

34

34

32

32

31

32

32

43

69

4S

42

39

*37

1,266

40.8

2,510

Sept.

36

35

35

35

34

32

32

31

30

30

29

30

30

29

28

28

*27

26

26

26

27

28

27

27

26

25

75

31

29

28

886

29.5

1,760

Calendar year 1955: Max 590 Mln 11 Mean 89.8 Ac-ft 65,000

Water year 1955-56: Max 9£2 Mln 11 Mean 148 Ac-ft 107,500

Peak discharge (base, 500 efs). Apr. .. 

(2.78 ft); May 21 (9 p.m.) 924 cfs (3.54 ft); May 23 (11 p. 

(9:30 p.m.) 910 cfs (3.45 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ic

. .. 

1,060 cfs (3.75 ft); May 26
GRANDE RONDE RIVER BASIN 239

Grande Ronde River near Elgin, Oreg.

Location. Lab 45°31', long 117 0 56', in NW£ sec. 3, T. IS., R. 39 E., on right bank 

an eighth of a mile upstream from bridge on State Highway 83, l| miles downstream 

from Willow Creek, and 3^ miles south of Elgin.

Drainage area. 1,250 sq mi, approximately. 

Records available. August 1955 to September 1956.

Sage. Water-stage recorder. Datum of gage is 2,660.31 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947.

Extremes. Maximum discharge during year, 5,220 cfs May 12 (gage height, 11.78 ft); minimum, 34 cfs Oct. 1 (gage height, 0.88 ft).

1955-56: Maximum discharge, that of May 12, 1956; minimum, 21 cfs Sept. 3-5, 1955 

(gage height, 0.73 ft).

Flood in May 1948 reached a stage of 2,672.9 ft on Corps of Engineers' gage at 

bridge an eighth of a mile downstream (discharge, 5,690 cfs, discharge measurement). 

Floods in 1894 and 1917 were much higher, based on Corps of Engineers' flood profiles.

Remarks. Records excellent. Many diversions for irrigation in valley above station.

Rating table, water year 1955-56, except periods of ice effect (gage 

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

0.8

1.0 

1.3 

1.7

82

150

445

740

1,500

2,550

5,400

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

35

37

36

37

42

54

49

46

45

49

55

58

65

76

78

72

68

70

85

96

88

81

77

74

73

73

74

76

81

90

96

2,036

65.7

4,040

Nov.

*108

111

105

97

115

124

131

133

135

126

127

146

142

110

»b90

b80

86

99

113

140

190

222

218

210

208

246

444

659

617

542

5,874

196

11,650

Dec.

503 

494

470

438

338

268

350

318

325

328

352

468

854

857

704

536

450

473

*500

644

1,080

2,020

*3,020

5,070

2,500

2,040

1,790

1,550

1,260

996

821

29,817

962

59,140

Jan.

758 

719

710

719

728

722

671

635

557

515

560

560

590

650

761

1,780

2,250

2,190

2,060

1,890

1,700

1,540

1,500

 1,480

1,240

916

800

b750

b650

b600

b550

31,751

1,024

62,980

Feb.

b500 

b460

b440

665

698

569

560

539

485

440

445

500

611

620

533

b460

503

485

512

500

542

647

728

686

632

590

572

560

572

_ ____..

16,054

554

31,840

Mar.

617 

791

1,310

1,300

1,110

924

815

*731

773

779

698

626

623

638

611

626

701

851

1,260

1,640

1,890

2,220

2,690

3,310

3,850

4,050

4.100

*3,960

3,750

3,550

3,500

54,294

1,751

107,700

Apr.

3,460 

3,170

2,780

a2,500

a2,300

a2,400

a2,300

a2,200

a2,100

a2,200

a2,500

2,950

3,440

3,770

3,920

*4,030

4,120

4,120

4,000

3,940

3,950

4,100

4,350

4.470

4,360

4,160

3,940

3,720

3,470

3,140

101,860

3,395

202,000

May

2,800 

2,570

2,400

2,320

2,470

2,650

2,860

3,260

3,900

4,590

5,070

*5.180

4,880

4,440

4,080

3,750

3,450

3,260

3,220

3,250

3,230

3,160

3,070

3,090

*3 , 150

3,060

3,090

3,240

3,300

3,260

3,120

105,180

3,393

208,600

June

5,040 

3,000

2,880

2,720

2,600

2,420

2,250

2,020

1,820

1,680

1,540

1,420

1,290

1,190

1,200

1,270

1,270

1,220

1,150

1,150

1,100

1,010

928

854

797

737

686

635

590

554

44,981

1,499

89,220

July

515 

479

452

430

402

372

345

312

288

266

260

246

246

238

256

224

*206

188

172

154

157

127

118

108

102

97

92

99

97

88

82

7,178

232

14,240

Aug.

78 

78

78

74

75

72

73

70

68

65

62

61

59

57

57

57

53

49

43

43

45

44

45

45

M

43

45

58

78

*74

68

1,857

59.9

3,680

Sept.

64 

58

56

54

52

55

54

53

52

52

50

49

50

52

52

50

49

48

48

46

44

43

48

48

49

50

48

52

57

55

1,538

51.3

3,050

Calendar year 1955: Max - Min - Mean - Ac-ft -

Water year 1955-56: Max 5,180 Min 35 Mean 1,100 Ac-ft 798,100

fs).--Dec. 23 (9 to 12 p.m.) 3,260 cfs (9.08 ft); Mar. 27 (2 a.m, . .._ _ ft j_ . . _ ...__. -

Discharge measurement made on this day.

Peak discharge (base. 5.000 

4,120 efs (10.31 ft); Apr

a No gage-height record; discharg 

stations at La Qrande and Rondowa.

b Stage-discharge relation affected by ice.

4,490 cf B (10.84 ft); May 12 (9 a.m.) 5,220 cfs (11.78 ft) 

day. 

stimated on basis of weather records, and records for
230 GRANDE RONDE RIVER BASIN

East Pork Wallowa River near Joseph, Oreg.

Location. Lat 45°16', long 117 0 13', in SEij sec. 29, T. 3 S., R. 45 E., on left bank a 

quarter of a mile upstream from confluence with West Pork, 1 mile upstream from 

Wallowa Lake, and 6 miles south of Joseph.

Drainage area.--10 sq mi, approximately.

Records available.--July 1924 to September 1956. Prior to October 1952, records published separately as East Pork Wallowa River near Joseph and Wallowa Palls powerplant 

tailrace near Joseph.

Gage.--Water-stage recorder and concrete control. Datum of gage is 4.517.69 ft above 

mean sea level, datum of 1929 (Pacific Power & Light Co. benchmark). Prior to Apr. 8, 

1950, staff gage at same site and datum.

Average discharge. 32 years, 20.9 cfs (15,130 acre-ft per year).

Extremes. Maximum discharge observed during year, 119 cfs May 31; minimum daily, 9.8 cfs

1924-56: Maximum discharge, 450 cfs July 25, 1937 (no flow in powerplant tailrace), 

from rating curve extended above 80 cfs by logarithmic plotting; minimum daily, 6.6 cfs 

Feb. 13, 1927.

Remarks. Records good except those for periods of ice effect or doubtful or no gage-helgjit 

record for river station, which are fair. All records presented herein include flow 

in Wallowa Palls powerplant tailrace of Pacific Power & Light Co. The water is 

diverted at dam on East Fork Wallowa River into a conduit 1 mile upstream from powerhouse and discharged into West Pork a quarter of a mile downstream.

Revisions (water years).--WSP 1217: Drainage area. WSP 1247: 1931, 1937(M), 1948-49, 

records for river station; 1948, records for tailrace station.

Discharge, in cubic feet nd, water year October 1355 to September 1356

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

 total

Mean

Cfsm

In.

Ac-ft

Oot.

14

14

13

13

14

14

13

14

15

32

19

19

18

18

16

16

14

14

14

14

15

14

14

13

*13

14

15

14

15

b!7

15

477

15.4

1.54

1.77

946

Nov.

15

14

15

17

TS

15

14

14

14

b!6

14

12

b!4

b!4

b!5

blO

bTT

b!3

b!5

b!6

12

13

13

b!5

b!6

11

12

13

14

15

417

13.9

1.39

1.55

827

Dec.

11

12

14

b!4

b!3

*14

13

15

14

12

15

15

b!3

b!2

b!3

13

13

13

14

15

21

*28

2?

20

17

17

16

15

b!5

b!5

b!4

468

15.2

1.52

1.74

928

Jan.

14

14

14

14

13

14

14

15

16

H

13

13

14

16

14

13

*14

14

14

14

13

13

13

12

b!2

b!2

b!2

b!2

b!2

b!2

b!2

414

13.4

1.34

1.54

621

Feb.

bll

b!2

12

12

12

12

12

11

11

12

IT"3.8

TT

12

bll

bll

b!2

12

11

12

10

11

b!2

b!2

b!2

b!2

12

12

12

336.8

11.6

1.16

1.25

668

Mar.

12

12

*12

12

12

b!2

12

11

TT

bll

bll

bll

11

11

11

11

11

11

11

11

11

11

11

12

13

12

12

b!2

12

12

11

356

11.5

1.15

1.32

706

Apr.

11

11

11

11

11

bll

11

11

11

12

*b!3

b!3

14

15

16

17

16

15

16

19

22

24

25

24

23

23

22

22

22

20

432

16.4

1.64

1.83

376

May

20

21

22

22

22

23

24

24

26

26

25

24

23

23

25

a30

a37

a41

a50

a56

a62

*84

72

*30

a33

a!03

a93

a88

a!03

a!08

*all8

1,578

50.9

5.03

5.87

3,130

June

a75

3.66

63

63

51

a58

a58

3.59

a62

a67

a72

a67

a72

a82

*106

89

77

69

a72

a77

a72

a78

a73

a68

a66

75

73

82

85

78

2,173

72.4

7.24

8.08

4,310

July

77

76

71

67

66

*66

68

70

73

73

76

76

76

73

71

66

63

61

53

58

57

55

54

52

51

49

47

46

46

44

43

1,330

62.3

6.23

7.18

3,830

Aug.

41

45

33

38

36

35

34

33

32

30

30

23

23

28

23

*28

28

27

26

26

25

25

23

2J

23

23

32

26

25

24

23

916

23.5

2.35

3.41

1,820

Sept.

22

22

22

21

21

20

20

20

19

13

20

19

13

13

13

19

13

18

I?

13

19

19

13

13

*13

19

20

19

19

20

58fa

19.6

1.36

2.13

1,170

Calendar year 1955 : Max 108 Min 3.3 Mean 20.7 Cfsm 2.07 In. 28.04 Ac-ft 14,950

Water year 1955-56 : Max 118 Min 9.8 Mean 27.7 Cfsm 2.77 In. 37.73 Ac-ft 20.13O

* Discharge measurement made on this day. 

a Doubtful or no river Kaee-heieht record; discharge estimated on basis of recorder graph, 2 aia- Joseph.

by
GRANDE RONDE RIVER BASIN 231

Diversions from Wallowa Lake, Oreg.

The following canals divert from Wallowa Lake:

Joseph powerplant tailrace diverts at Wallowa Lake Dam in NWij sec. 5, T. 3 S., R. 45 E., 

for generation of power at Joseph. The diversion is measured at the powerplant in NE^NEij 

sec. 31, T. 2 S., R. 45 E. , and is returned to Wallowa River at Joseph. Records published 

as presented herein October 1952 to September 1956 (discontinued; powerplant, out of 

operation after July 1956) . Records published separately October 1950 to September 1952 

in reports of Geological Survey, November 1929 to September 1941 in reports of State 

engineer and October 1941 to September 1950 in files of State engineer.

Silver Lake Canal diverts at Wallowa Lake Dam in NWij sec. 5, T. 3 S., R. 45 E., for 

irrigation of 4,900 acres northeast of Joseph. Records published separately July to December 1905 (gage heights and discharge measurements only), May to September 1915, December 

1926 to September 1952, and as presented herein October 1952 to September 1956. Monthly 

runoff only for some periods, published in WSP 1317. Published as Silver Lake ditch near 

Joseph in 1905 and 1915.

Diversion, in acre-feet, water- year October 1955 to September 1956

Month

December .........................

Calendar year 1955. ............

January ..........................

Water year 1955-56

Joseph powerplant 

tailrace

1,630

27,270

1 , 630

3,750

0

28,980

Silver Lake 

Canal

237

234

188

15,330

.Loo 

241

4.4

89

458

2,710

4,920

4,750

1,690

15,690

Wallowa Lake near Joseph, Oreg.

Location.--Lat 45°20'20", long 117°13'30", in NW£ sec. 5, T. 3 S., R. 45 E., on trashrack structure near west end of Wallowa Lake Dam, three-quarters of a mile southeast of Joseph.

Drainage area. 52 sq mi, approximately.

Records available.--November 1903 to July 1906 (gage heights only), January 1912 to 

March 1914, May to September 1915 (gage heights and change in contents only), and 

October 1925 to September 1956. Month-end contents only for some periods, published 

in WSP 1317. November 1903 to March 1905 published as Wallowa River at Joseph. 

Change in contents for January 1912 to March 1914 and May to September 1915 published 

with records for Wallowa River at Joseph.

Gage.--Staff gage read once daily. Datum of gage is 4,355.66 ft above mean sea level 

Saturn of 1929. Prior to Aug. 7, 1929, staff gages at several sites within 600 ft of 

present site at various datums.

Extremes. Maximum contents during year, 45,660 acre-ft June 22 (gage height, 28.55 ft); 

minimum, 14,220 acre-ft Oct. 1 (gage height, 9.15 ft).

1925-56: Maximum contents, that of June 22, 1956; minimum, 4,790 acre-ft Oct. 10, 

1929 (gage height, 3.10 ft).

Remarks. Reservoir is formed by concrete dam. Capacity 42,750 acre-ft between gage 

heights 0.0 ft (sill of outlet gates) and 26.8 ft (spillway crest). About 5,300 acreft dead storage above outlet gates, since channel is about 3.4 ft above outlet gates. 

Dead storage below outlet gates not known. Records are based on capacities above outlet gates.

Month-end gage height and contents, water year October 1955 to September 1958

Date

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

Gage height 

(feet)t

9 15

1° 45

_

Contents 

(acre-feet)

Change in contents 

(acre-feet)

+3 *^90

t Gage height at 7 a.m.
232 GRANDE RONDE RIVER BASIN

Wallowa River at Joseph, Oreg.

Location. Lat 45°20', long 117°14', in NW£ sec. 5, T. 3 S. , R. 45 E., on left bank 

1,000 ft downstream from Wallowa Lake Dam and three-quarters of a mile south of 

Joseph.

Drainage area. 52 sq mi, approximately.

Records available . November 1903 to August 1907, June 1908 to March 1914, May to 

September 1915, December 1926 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317. Published as "near Joseph" 1904-5, 1907-11, 1937-49, 

and as "below Wallowa Lake near Joseph" 1931-36.

Gage. Water-stage recorder. Datum of gage is 4,326.86 ft above mean sea level, datum 

of 1929. Nov. 12, 1903, to Sept. 25, 1915, staff gages at several sites at lake outlet or near present site at different datums.

Average discharge. 29 years (1927-56), 124 cfs (89,770 acre-ft per year), adjusted for 

storage and divers!on.

Extremes. Maximum discharge during year, 522 cfs July 29 (gage height, 3.69 ft); minimum, 2.1 cfa Mar. 6-8 (gage height, 0.92 ft).

1903-15, 1926-56: Maximum discharge observed, 850 cfs June 12, 13, 1912 (gage 

height, 3.60 ft, site and datum then in use); no flow at times.

Remarks.--Records good except those below 20 cfs, which are poor. Monthly discharges 

adjusted for storage in Wallowa Lake (see preceding page) and diversions from Wallowa 

Lake by Silver Lake Canal and Joseph powerplant (see p. 231). City of Joseph diverts 

less than 1 cfs from Wallowa Lake for municipal use.

Revisions (water years).--WSP 1397: 1906.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

0.9 1.3

1.0 4.0

1.1 8.0

1.2 

1.5 

2.0

42

114

205

325

495

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac -ft

Oct.

12

Iz

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

*12

12

12

12

23

38

38

38

33

16

16

20

498

16.1

988

Nov.

24 

24

20

9.5

8.5

8.5

8.5

8.5

*8.5

8.5

8.5

8.5

7.5

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

6.5

375

6.5

6.5

6.5

6.5

6.5

6.5

268.0

8.93

532

Dec.

6.5 

675

6.5

6.5

6.5

*5.7

4.9

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.3

4.3

4.0

4.0

3.4

3.4

4.9

4.9

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

167.0

5.39

331

Jan.

6.5 

6.5

*6.5

7.0

675

6.5

6.5

6.5

6.5

6.1

6.1

6.1

6.1

6.1

6.1

6.1

6.1

6.1

6.1

6.1

6.1

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

197.2

6.36

391

Feb.

6.5 

675

6.5

6.5

6.5

6.5

8.5

11

42

27

27

27

27

*27

27

27

27

26

21

18

17

16

17

17

17

17

17

17

17

533.5

18.4

1,060

Mar.

15 

5.7

7.0

8.5

8.5

7.5

2.1

473

6.5

7.0

7.5

8.0

8.0

7.5

7.5

7.5

7.0

7.0

7.0

7.0

7.0

*6.1

4.3

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

215.5

6.95

427

Apr.

6.5 

675

6.5

6.5

7.0

7.0

7.0

7.0

7.0

7.5

7.5

*7.5

7.5

7.5

8.0

8.0

8.0

8.5

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.5

975

9.0

9.0

240.0

8.00

476

May

13

20

24

20

21

23

24

24

24

23

29

35

35

40

*46

55

65

72

71

72

154

225

282

308

278

318

330

332

332

335

335

3,965

128

7,860

June

345

387

372

375

375

315

235

*223

 232 209

278

305

328

345

365

384

330

290

275

308

372

429

435

423

458

429

411

399

408

390

10,410

347

2O, 650

July

370 

310

368

302

260

232

207

203

209

232

295

328

345

348

338

322

308

292

280

268

258

280

315

340

358

396

411

417

483

456

417

9,948

321

19,730

Aug.

417 

414

378

350

300

280

292

280

225

209

205

211

205

193

201

191

189

174

159

161

143

135

127

127

159

157

137

134

130

130

95_

6,508

210

12,910

Sept.

84 

82

93

98

98

98

85

78

78

78

78

76

76

76

75

75

75

75

75

75

75

74

74

*74

101

29

29

25

18

18

2,145

71.5

4,250

Adjusted for change In contents In Wallowa Lake and diversions by 

Silver Lake Canal and Joseph powerplant tallrac

Cf sm

Ac-ft

86.4

1.66

1.91

5,310

81.0

1.56

1.74

4,820

90.6

1.74

2.01

5,570

66.8

1.28

1.48

4,110

56.5

1.09

1.17

3,250

48.8

0.938

1.08

3,000

128

2.46

2.74

7,610

377

7.25

8.35

23,170

589

11.3

12.64

35,050

396

7.62

8.77

24,330

136

2.62

3.03

8,390

71.3

1.37

1.53

4,240

Calendar year 1955: 

Water year 1955-56:

Max 

Max

414 

483

Mln 1.8

Mln 2.1

Mean 

Mean

58.7 

95.9

Ac-ft 

Ac-ft

42,500

69,600

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean 

Mean

124 

177

Cfsm 2.38 

Cfsm 3.40 In!

32.49 

46.45

Ac-ft 

Ac-ft

90,110 

128,800

* Discharge measurement made on this day.
GRANDE RONDE RIVER BASIN 233

Hurricane Creek near Joseph, Oreg.

Location.--Lat 45°20' , long 117°18' , in NEjj- sec. 3, T. 3 S. , R. 44 E. , on left bank 

350 ft upstream from intake of Moonshine ditch and 3^ miles southwest of Joseph.

Drainage area.--31 sq mi, approximately.

Records available . April to September 1915, April 1924 to September 1956. Monthly 

discharge only for some periods, published in WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 4,500 ft (by barometer). Apr. 27 to 

Sept. 3, 1915, staff gage at site 250 ft downstream at different datum. Apr. 23, 

1924, to June 13, 1933, water-stage recorder at site 150 ft downstream from present 

site at different datum.

Average discharge.--32 years (1924-56), 71.9 cfs (52,050 acre-ft per year).

Extremes.--Maximum discharge during year, 659 cfs May 31 (gage height, 3.61 ft); minimum, 

13 cfs Mar. 3 (gage height, 1.60 ft).

1915, 1924-56: Maximum discharge, 1,110 cfs June 9, 1948 (gage height, 3.55 ft); 

maximum gage height, 4.69 ft June 13, 1955; minimum discharge, 2.8 cfs Mar. 2, 1955.

Remarks.--Records fair except those above 400 cfs, which are poor. No diversion or 

regulation above station.

Revisions (water years). WSP 1397: 1915, 1925-28.

Rating tables, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Oct. 1-8, May 24 to June 5)

1.7 

2.0 

2.2

Oct. 1 to May 31

20 2.5 175

425

830

June 1 to Sept. 30

2.5 

3.0 

3.5

1.9

2.0 

2.2

2.5 140

3.0 400

3.5 830

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

26

26

26

26

26

26

26

26

30

104

49

45

43

43

41

38

37

36

34

*33

33

31

29

28

26

26

26

26

26

35

30

1,057

34.1

1.10

1.27

2,100

Nov.

29

28

30

32

31

31

31

32

*34

118

66

50

45

43

39

39

39

39

51

47

45

44

41

39

37

37

37

36

36

35

1,241

41.4

1.34

1.49

2,460

Dec.

34

33

32

31

*31

31

32

32

32

32

34

35

31

30" 29

31

32

32

33

34

40

62

5T

45

41

41

39

35

32

32

32

1,091

35.2

1.14

1.31

2,160

Jan.

34

34

34

34

34

34

34

34

33

33

33

33

34

34

43_

38

*36

35

35

35

35

35

35

33

33

32

33

33

33

33

33

1,062

34.3

1.11

1.27

2,110

Feb.

33

37

33

33

33

33

32

32

32

31

31

31

30

30

30

30

30

30

29

28

26

2T

26

26

27

29

29

29

29

872

30.1

0.971

1.05

1,730

Mar.

25

26

22

25

26

25

25

25

25

23

22

11

23

23

23

23

23

24

24

24

*24

24

25

26

30

31

30

30

30

30

30

787

25.4

0.819

0.94

1,560

Apr.

30

29

29

29

29

29

29

29

30

33

35

*41

46

52

60

66

64

64

72

95

119

140

147

*I37

134

131

125

119

113

108

2,164

72.1

2.33

2.60

4,290

May

105

105

105

108

105

105

108

108

110

113

110

105

98

98

108

137

183

265

300

365

432

*432

*518

*425

383

407

377

343

389

467

*525

7,539

243

7.84

9.04

14,950

June

456

421

407

380

323

287

250

*293

380

407

387

354

348

348

342

305

270

287

*342

354

287

293

287

275

270

281

311

342

317

260

9,864

329

10.6

11.83

19,560

July

235

220

198

194

198

212

216

220

240

275

317

260

299

287

245

225

216

216

*212

212

207

194

*172

172

164

144

134

131

144

128

116

6,403

207

6.68

7.68

12,700

Aug.

~96~ 108

87

85

81

81

81

79

77

75

*75

75

77

77

81

83

79

77

73

71

69

67

67

67

67

79

92

71

66

62

58

2,383

76.9

2.48

2.86

4,730

Sept.

56 SB54

52

51

49

49

48

47

47

47

46

44

43

43

42

40

39

40

42

40

*40

39

*36

35

35

39

38

37

36

1,309

43.6

1.41

1.57

2,600

Calendar year 1955: Max 675 Min 8.4 Mean 68.9 Cfsm 2.22 In. 30.17 Ac-ft 49,870

Water Water year year 1955-56: 1955-56: Max Max 525 525 Min Min 21 21 Mean Mean 97.7 97.7 Cfsm Cfsm 3.15 3.15 In. In. 42.91 42.91 Ac-ft Ac-ft 7O,950 7O,950

Peak discharge (base. 400 efs).-^lay 24 (12:50 a.m.) 495 efs (3.60 ft); May 51 (6 p.m.) 659 of 

(3.51 ft); June 3 (.10 p.m.) 494 cfs (3.18 ft); July 13 (3 p.m.) 470 cfs (3.10 ft). 

* Discharge measurement made on this day.

467239 O-58 16
234 GRANDE RONDE RIVER BASIN

Lostine River near Lostine, Oreg.

Location. Tat 45°26', long 117°25', in NW£ sec. 34, T. IS., R. 43 E. , on left bank 

3-j miles south of Lostine and 9 miles upstream from mouth.

Drainage area.--70 sq mi, approximately.

Records available.--August 1912 to March 1914, April to September 1915, July 1925 to 

September 1956. Monthly discharge only for some periods, published in WSP 1317.

Gage.--Water-stage recorder. Altitude of gage is 3,650 ft (by barometer). Aug. 24, 

1912, to Sept. 25, 1915, staff gage at site 500 ft upstream at different datum. 

July 21, 1925, to Sept. 30, 1929, water-stage recorder at site 100 ft upstream from 

present site at datum about 1.5 ft higher than present datum. Oct. 1, 1929, to 

Dec. 15, 1953, water-stage recorder at site 85 ft downstream from present site at 

datum 1.00 ft higher than present datum.

Average discharge.--32 years (1912-13, 1925-56), 191 cfs (138,300 acre-ft per year).

Extremes. Maximum discharge during year, 1,880 cfs June 1 (gage height, 6.59 ft); minimum, 27 cfs Mar. 15 (gage height, 0.67 ft).

1912-15, 1925-56: Maximum discharge observed, 2,540 cfs May 27, 1913 (gage 

height, 6.60 ft, site and datum then in use): minimum recorded, 10 cfs Nov. 28-30, 

1936.

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

which are poor. Diversions for irrigation of about 130 acres of which about 20 acres 

are below station. Plow slightly regulated since 1916 by Minam lake, usable capacity 

about 1,000 acre-ft.

Revisions (water years).--WSP 1397: 1913, 1942.

Rating tables, water year 1955-56, except periods of ice effect (gage 

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

Oct. 1 to June 1 June 2 to Sept. 30

0.7 29

1.0 65

1.5 135

2.0 225

3.0 455

4.0 760

5.0 1,130

6.5 1,830

0.7 27

1.0 62

1.5 130

2.0 215

3.0 440

4.0 72O

5.0 1,100

6.5 1,830

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

39

39

39

38

47

42

44 

41

46

213

120 

106

103

100

95

86

81

78

*78

75

72

70

65

62

60

61

61

65

69

124

92

2,311

74.5

4,580

Nov.

89

81

83

99

103

96

96 

93

100

452

277

b210

b!70

b!40

b!20

bllO

bllO

b!20

b!35

*b!30

122

114

107

103

blOO

blOO

blOO

blOO

100

96

3,841

128

7,620

Dec.

93

91

b80

b75

*b65

b70

b65 

a60

a62

66

82 

113

b90

b60

b50

a55

a60

66

78

81

122

259 m

188

156

148

141

b!20

bl!5

bllO

bllO

3,172

102

6,290

Jan.

b!05

blOO

99

99

92

*88

88 

86

b85

81

79 

78

78

77

134

137

bTTs

b!05

blOO

b95

b90

b90

b85

b80

b80

b75

b72

b70

b70

b65

tiSS

2,763

89.1

5,480

Feb.

a70

a70

a74

a78

a80

a75

a70 

375

aBO

a 80

a76 

b72

69

66

62

a60

a60

a58

a58

*60

62

61

56

53

51

50

48

48

47_

1,869

64.4

3,710

Mar.

47

*50

48

42

b40

b40

b42 

b44

45

42

b40 

b38 b3"B"

b38

b38

40

b39

*b41

b44

b44

b44

b50

60

70

86

98

M

78

78

78

79

1,645

53.1

3,260

Apr.

77

74

73

73

72

72

*73 

70

73

86

112 

*151

184

219

273

303

271

265

318

405

519

591

5W

528

489

455

442

415

388

352

8,011

267

15,890

May

332

322

325

352

348

340

340 

348

360

375

350 

312

285

279

30T

408

573

795

*986

al.100

al.JOO

*1,300

1,420

1,620

1,240

1,310

1,380

1,040

1,120

1,350

1,600

23,515

759

46,640

June

1,580

1,300

1,130

1,020

1,340

1,630

1,800 

1,640

*1,000

1,220

1,180 

1,040

1,030

996

984

772

648

S54

814

*968

780

748

752

727

717

762

888

996

904

714

30,734

1,024

60,960

July

615

591

530

525

535

570

6O6 

615

660

755

1,000 

762

794

702

573

515

478

462

*445

440

432

420

405

385

365

338

307

285

273

263

253

15,899

513

31,540

Aug.

op?

205

183

163

152

144

139 

134

130

126

122 

116

112

108

105

103

99

95

89

85

*82

79

78

76

78

98

130

99

84

79

74

3,594

116

7,130

Sept.

"55 68

62

61

58

57

54 

52

50

50

48 

*48

48

46

44

42

40

39

38

39

43

40

39

*38

38

37

U

48

44

44

1,423

47.4

2,820

Calendar year 1955 : Max 1,470 Mln 13 Mean 173 Ac-ft 125,400

Water year 1955-56 : Max 1,800 Mln 37 Mean 270 Ac-ft 195,900

Peak discharge (base. 1.100 efs) . May 24 (2 to 4 a.m.) 1,84O cfs (6.51 ft); June 1 (1:30 a.m.) 

1,880 cfs (6.59 ft}; June 7 (3 p.m.) 1,86O cfs (6.55 ft); June 28 (1O p.m.) 1,1OO cfs (5.OO ft); 

July 11 (3 a.m.) 1,170 cfs (5.18 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range in stage, 

and records for Bear Creek near Wallowa and Hurricane Creek near Joseph.

b Stage-discharge relation affected by ice.
GRANDE RONDE RIVER BASIN 235

Bear Creek near Wallowa, Oreg.

Location. Lat 45°32', long 117 0 33', in NE£ sec. 34, T. IN., R. 42 E., on right bank 

30 ft downstream from unused bridge, 3 miles southwest of Wallowa, and 4? miles upstream from mouth.

Drainage area.--68 sq mi, approximately.

Records available.--April to September 1915, April 1924 to September 1956. Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 3,250 ft (by barometer). Apr. 13 to 

sept. 16, 1915, staff gage at site 1 mile upstream at different datum. Apr. 22, 1924, 

to Nov. 2, 1931, water-stage recorder at site I? miles upstream from present site at 

different datum and upstream from intakes of two irrigation ditches having a combined 

capacity of about 3 cfs.

Average discharge.--32 years (1924-56), 111 cfs (80,360 acre-ft per year).

Extremes. Maximum discharge during year, 1,330 cfs May 23 (gage height, 3.13 ft), from 

rat ing curve extended above 760 cfs by logarithmic plotting; minimum, 9.6 cfs 

Sept. 26, 27.

1915, 1924-56: Maximum discharge, 1,620 cfs Apr. 22, 1936 (gage height, 3.82 ft, 

from floodmarks), from rating curve extended above 930 cfs; minimum daily, 3 cfs 

Jan. 20, Feb. 1, 1937.

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

which are poor. Diversions for irrigation of about 43 acres above station. Water 

for irrigation of about 440 acres in Lostine River basin diverted from Little Bear 

Creek, a tributary above the station.

Revisions (water years). WSP 1397: 1915, 1927, 1929-30, 1932, 1936-40, 1945, 1949.

Rating tables, water year 1955-56, except periods of loe effect (gage 

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

0.7

.9

1.1

1.5

Oct. 1 to May 23

9.0 2.0 235

25 2.5 540

46 3.0 1,130

110

0.8

1.0 

1.2 

1.5

May 24 to Sept. 30

6.0

17

36

86

2.0 230

2.5 540

3.0 1,130

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

a

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

14

14

14

15

17

15

15

15

15

47

44

41

44

42

40

36

34

32

*32

30

30

29

28

27

26

26

25

27

27

50

41

892

28.8

1,770

Nov.

33

38

38

49

53

52

50

49

52

148

110

87

80

66

a60

a55

a50

a55

a70

*b78

b72

68

64

60

63

70

78

75

74

70

1,972

65.7

3,910

Dec.

68

63

60

56

*b55

b55

57

63

56

46

54

b75

b60

b50

b4Q

b40

b45

b50

b55

66

96

220

232

199

162

144

132

118

103

blOO

b95

2,715

87.6

5,390

Jan.

b90

85

80

78

*72

69

68

64

62

b60

57

56

56

54

96

blOO

b95

b90

b85

b80

b78

b76

b74

b72

70

b68

b65

b62

b60

b60

b55

2,237

72.2

4,440

Peb.

a 60

a62

a65

a 68

a70

a66

a64

a60

a65

a70

a68

a65

a62

a60

a55

a50

a52

a55

a54

*a52

b50

b50

b50

a48

a46

a45

a44

a42

b40

1,638

56.5

3,250

Mar.

b42

b45

b40

b38

b35

b35

b38

b40

b35

b30

b26

b25

b24

b23

b24

*b25

b30

b50

b80

114

122

134

152

196

223

235

202

178

165

165

170

2,741

88.4

5,440

Apr.

162

150

144

138

136

130

128

126

T28

148

196

*235

271

305

342

372

315

295

320

404

492

540

540

476

411

372

348

320

285

258

8,487

283

16,830

May

240

232

235

262

262

266

276

305

342

354

325

290

*253

240

258

336

468

652

718

788

776

*812

1,020

1.050

824

836

776

524

886

886

964

16,456

531

32,640

June

860

740

707

674

516

372

319

372

*540

603

524

476

453

468

508

425

366

348

418

484

390

*366

366

336

314

319

354

372

319

257

13,566

452

26,910

July

220

223

209

209

206

202

195

186

186

198

302

256

183

156

132

*118

105

96

*93

88

80

72

63

60

55

50

47

46

52

44

40

4,122

133

8,180

Aug.

36

21

35

32

31

30

30

28

26

24

22

22

22

21

21

20

*20

19

18

17

17

16

16

16

16

21

30

25

22

20

19

729

23.5

1,450

Sept.

18

T7

16

16

16

16

15

14

14

14

14

14

14

13

13

12

12

12

12

13

*14

12

11

*10

10

12 9.6

12

10

10

395.6

13.2

785

Calendar year 1955; Max 1,300 Min 11 Mean 105 Ac-ft 76,000

Water year 1955-56: Max 1,050 Min 9.6 Mean 153 Ac-ft 111,000

Peak discharge (base. 600 cfs). May 23 (12 p.m.) 1,330 cfs (3.13 ft); May 31 (9 p.m.) 1,130 cfs 

(3.00 ft); June 9 (10 p.m.) 696 cfs (2.66 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range in stage, 

and records for Lostine River near Lostine and Hurricane Creek near Joseph.

b Stage-discharge relation affected by ice.
236 GRANDE RONDE RIVER BASIN

Grande Ronde River at Rondowa, Oreg.

Location. Lat 45°44', long 117°47' , in N¥^ sec. 23, T. 3 N., R. 40 E., on right bank

 at Rondowa, 500 ft downstream from Wallowa River and at mile 81.4 (Geological Survey 

river-profile survey).

Drainage area. 2,555 sq mi.

Records available. October 1926 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,281.87 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947.

Average discharge. 30 years, 2,068 cfs (1,497,000 acre-ft per year).

Extremes.--Maximum discharge during year, 12,900 cfs May 24 (gage height, 7.57 ft); minimum, 496 cfs Oct. 3,4.

1926-56: Maximum discharge, 19,900 cfs May 28, 1948 (gage height, 9.76 ft); minimum, 225 cfs Dec. 19, 1935.

Remarks.--Records excellent. Diversions for irrigation of about 95,000 acres above sta-

 UTon, chiefly in vicinity of La Grande, Enterprise, and Wallowa; one transbasin diversion from Sheep Creek in Imnaha River basin for irrigation of about 6,500 acres in 

Wallowa Valley. Flow slightly regulated by Wallowa Lake (see p. 231) and small 

reservoirs.

Revisions (water years). WSP 1093: 1926-29, 1932-33, 1936, 1938, 1939(M), 1943.

 WSP 1397: 1927. Revised figures of discharge, in cubic feet per second, for a highwater period in the water year 1927, superseding those published in WSP 1317 and 1397, 

are given herewith:

1927 

Apr. 26............... 7,000

27............... 8,180

28............... 8,110

29.. ............. 7,740

30. .............. 7,400

Month

Calendar year 1927. .........

Maximum

9,590

Minimum

450

Mean

2,180

2,630

Runoff In 

acre-feet

217,200

1,634,000

1,903,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

516

509

502

509

561

548

535

528

535

834

1,010

813

795

768

742

702

670

656

66j

665

656

642

628

621

607

614

628

635

656

804

822

20,372

657

40,410

Nov.

768

710

726

786

910

851

840

813

*822

1,190

1,400

1 , 100

1,000

910

734

650

786

850

1,040

1,190

1,130

1,080

1,040

1,010

1 , 1 70

1,770

2.350

2,130

1,900

1,730

33,366

1,112

66,180

Dec.

1,700

1 , 600

1,480

1,360

1 , 200

1,130

1,180

*1,100

1,120

1.070

1,280

2,560

2,510

1 , 800

1,480

1,460

1,370

1,350

1,440

1,800

5,040

10,400

8,120

6,320

5,120

4,620

4,260

3,630

2,930

2,280

2,140

84,850

2,737

168,300

Jan.

2,070

2,000

,920

,920

,920

,840

,830

,780

,560

,560

,540

,500

,610

,640

,670

,440,

,300

,660

,220

* ,850

,520

,330

,340

,1EO

,530

,070

,080

,800

a ,800

a ,700

a ,400

77,520

2,501

153,800

Feb.

a ,250

a ,250

a ,300

,340

,390

,430

,400

,300

,240

,260

,250

,560

,660

,570

,350

.060

,110

,110

,150

,180

,770

,190

,810

,720

,610

,550

,480

,450

,460

41,200

1,421

81,720

Mar.

1,570

2,710

3,310

2,890

2,450

2,080

1,880

1,840

*1,880

1,790

1,600

1,470

1,550

1,490

1,450

1,500

1,760

2,430

3,420

4,010

4,780

5,780

7,320

8,900

9,550

9,600

7,950

7,150

6,980

6 , 950

7,000

125,040

4,034

248,000

Apr.

6,520

5,950

5,420

5,180

5,040

4,700

4,660

4.540

4,680

5,220

6,250

7,300

7,900

8,320

8,700

8,850

8,400

8,120

8,300

*8,800

9,600

10,300

10.400

9 950

9,350

8,800

8,450

7,950

7,350

6,700

221,700

7,390

439,700

May

6,150

5,700

5,550

6,080

6,400

6,450

6,750

8,020

8,880

9,450

9,550

9,080

8,420

7,720

7,380

7,450

7,920

8,920

10,100

10,700

10,800

10,900

11,300

12,200

10,600

10,600

11,800

10,600

10,400

10,800

11,200

277,870

8,964

551,100

June

11,300

*1O,000

9,320

9,180

8,050

6,850

5,980

5,750

6,400

7,150

6,750

6,000

5,620

5,520

5,850

5,580

4,980

4,600

4,800

5,400

4,800

4,480

4,420

4,240

4,050

3,760

3,790

3,920

3,740

5.290

175,570

5,852

348,200

July

2,910

2,760

2,720

2,500

2,510

2,500

2,500

2,470

2,430

2,590

3,450

3,000

2,830

3,000

2,590

2,310

2,130

1,960

1,800

1,680

1,580

1,460

1,350

1,260

1,210

*1,090

998

998

1,040

1,040

972

63,618

2,052

126,200

Aug.

924

924

940

91tT

868

836

836

804

796

780

748

718

695

672

658

672

651

623

595

581

560

567

574

'560 553

672

884

940

836

820 

772

22,975

741

45,570

Sept.

756

725

702

710

688

665

672

658

637

630

623

623

623

623

609

602

588

560

553

560

574

567

574

567

560

567

*546

581

574

560

18,477

616

36,650

Calendar year 1955: Max 10,400 Mln 399 Mean 1,952 Ac-ft 1,414,000

Water year 1955-56: Max 12,200 Mln 502 Mean 3,176 Ac-ft 2,306,000

Peak discharge (base. 5,000 cfs) .--Dec. 22 (10 a.m.) 11,800 cfs (7.10 ft); Jan. 16 (7:30 p.m.) 

6,280 cfs (4.91 ft); Mar. 26 (1 a.m.) 10,700 cfs (6.68 ft); Apr. 23 (3 a.m.) 10,600 cfs (6.63 ft); 

May 24 (3 a.m.) 12,900 cfs (7.57 ft); June 10 (3 a.m.) 7,420 cfs (5.37 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for statlor 

at Troy.
GRANDE RONDE RIVER BASIN 237

Grande Ronde River at Troy, Oreg.

Location.--Lat 45°57', long 117°27' , in NW£ sec. 4, T. 5 N., R. 43 E., on downstream 

side of left end of bridge at Troy, 100 ft downstream from Wenaha River and at 

mile 45.4 (Geological Survey river-profile survey).

Drainage area. 3,275 sq mi.

Records available. August 1944 to September 1956. Monthly discharge only for some periods, published in WSP 1317.

Gage.--Water-stage recorder. Datum of gage is 1,587.13 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947. Prior to Oct. 1, 1949, wire-weight gage 

at same site at datum 12.00 ft lower.

Average discharge.--12 years, 3,312 cfs (2,398,000 acre-ft per year).

Extremes.--Maximum discharge during year, 26,400 cfs Dec. 22 (gage height, 10.43 ft); 

minimum, 693 cfs Sept. 27, 28 (gage height, 2.19 ft).

1944-56: Maximum discharge observed, 30,000 cfs Dec. 15, 1946 (gage height, 

11.20 ft, present datum); minimum, 434 cfs Nov. 29, 1952 (gage height, 1.71 ft), 

result of freezeup.

Remarks. Records excellent. Diversions for irrigation of about 95,000 acres above station, chiefly in vicinity of La Grande, Enterprise, and Wallowa; one transbasin diversion from Sheep Creek in Imnaha River basin for irrigation of about 6,500 acres in 

Wallowa Valley. Flow slightly regulated by Wallowa Lake (see p. 231) and small 

reservoirs.

Revisions (water years).--WSP 1397; 1946(M), 1948-50.

Rating table, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per second)

(Shifting-control method used Nov. 27 to

Dec. 11, Apr. 22 to May 8)

2.2

3.0 

4.0 

5.0

700

1,500

2,840

4,630

6.0 7,220

14,000

24,000

Discharge, in cubic feet pec second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

724

716

708

716

843

807

772

756

780

951

1,460

1,170

1,080

1,050

1,010

960

924

879

879

879

879

870

852

834

*825

816

843

879

924

1,150

1,270

^8,206

910

55,950

Nov.

1,140

1,080

1,030

1,130

1,390

1,310

1,280

1,250

1,230

1,380

E,060

1,560

1,360

1,280

1,010

915

1,070

1,180

1,320

1,680

1,580

1,500

1,420

1,370

1,500

2,060

5.170

2,820

2,650

2,480

46,205

1,540

91,650

Dec.

2,440

2,330

2,140

1,950

1,770

1,600

*1,610

1,520

1,520

1.440

1,630

3,400

3,830

3,060

2,420

E.310

2,060

1,970

1,970

2,330

5,420

20,500

14,300

9,600

7,540

6,520

6,090

5,280

*4,370

3,630

3,300

129,850

4,189

257,600

Jan.

3,190

3,050

2,880

2,860

2,840

2,720

2,690

2,650

2,400

£,330

2,260

2,230

2,270

2,400

2,920

6,690

7.560

*6,390

5,650

5,120

4,630

4,350

4,370

4,180

5,680

3,170

2,980

2,720

2,680

2,550

2,_10_0

108,310

3,494

214,800

Feb.

1,870

1,880

1,970

2,030

2,050

2,150

2,060

1,950

1,860

1,860

1,860

2,080

2,470

2,550

2,130

1.650

1,720

1,670

1,740

1,750

1,960

5.170

2,620

2,520

2,570

2,270

2,250

2,150

2,140

------

60,470

2,085

119,900

Mar.

2,280

5,600

*4,770

4,280

3,610

5,160

2,870

2,760

2,860

2,690

2,440

2,260

2,550

2,250

2.170

2,210

2,540

3,410

4,840

5,760

6,420

7,890

9,350

12,500

15,500

14,400

11,000

9,450

8,970

9,210

9,450

175,210

5,652

347,500

Apr.

8,910

8,190

7,600

7,390

7,280

6,800

6,770

6.520

7,000

*8,160

9,750

11,000

12,000

13,200

13,900

14,100

12,800

12,200

12,500

13,100

14,500

15,500

14,900

13,800

12,800

12,000

11,500

10,700

9,780

9,050

- -----

525,280

10,780

641,200

May

8,450

*8,010

7.850

8,520

9,270

9,120

9,240

11,400

13,100

13,200

13,200

12,200

11,100

10,100

9,690

9,720

10,300

11,400

15,000

15,700

13,900

13,600

15,900

*15,600

15,800

12,900

15,500

15,700

13,100

13,300

13,700

365,550

11,790

725,000

June

14.100

12,400

11,500

11,200

10,100

8,970

7,980

7,570

7,980

8,730

8,550

7,830

7,340

7,220

7,510

7,660

7,110

6,310

6,340

7,140

6,470

5,960

5,860

5,600

5,400

4,980

4,980

5,120

4,980

5.410

------

226,300

7,543

448,900

July

3,890

3,600

5,700

5,550

3,320

3,500

5,520

3,240

*5,160

3,270

4,120

5,940

5,530

5,810

5,350

3,040

2,800

2,580

2,420

2,210

2,100

1,880

1,690

1,600

1,500

1,400

1,520

1.280

1,300

1,570

1,500

82,690

2,667

164,000

Aug.

1,220

1,200

1,240

1,220

1,150

1,120

1,100

1,060

*1,050

980

960

915

888

861

807

854

825

798

756

740

724

716

716

724

740

861

,070

,510

,120

,080

,020

20,785

961

59,080

Sept.

990

951

915

915

915

879

879

879

861

843

825

816

816

798

798

798

780

756

724

716

752

756

756

756

756

*740

708

716

740

724

------

24,258

808

48,080

Calendar year 1955: Max 20,500 Min 546 Mean 2,634 Ac-ft 1,907,000

Water year 1955-56: Max 20,500 Min 708 Mean 4,372 Ac-ft 3,174,000
238 ASOTIN CREEK BASIN

Asotln Creek near Asotin, Wash.

Location. Lat 46°19'30" , long 117°12'30", in SE^ sec. 19, T. 10 N. , R. 45 E., on left 

bank half a mile upstream from the Washington Water Power Co.'s diversion for water 

supply and irrigation, 5 miles upstream from George Creek, and 8 miles west of Asotin.

Drainage area.--156 sq mi.

Records available. March to November 1904, April 1905 to February 1906, May to November 

1906, August to September 1910, July to October 1911, August 1928 to September 1956. 

Published as "at Shelman's Ranch, near Asotin" 1904-5.

Gage. Staff gage and crest-stage indicator; gage read twice daily. Altitude of gage is 

T,380 ft (from topographic map). Prior to Jan. 11, 1934, staff gages within a quarter 

of a mile of present site at different datums.

Average discharge. 28 years (1928-56), 67.4 cfs (48,800 acre-ft per year).

Extremes. Maximum discharge during year, 1,040 cfs Dec. 22 (gage height, 3.94 ft), from 

rating curve extended above 280 cfs on basis of slope-area determination of peak flow; 

minimum observed, 25 cfs Nov. 15; minimum gage height, 0.51 ft Feb. 20.

1904-6, 1910-11, 1928-56: Maximum discharge observed, 1,180 cfs Apr. 15, 1904 

(gage height, 4.3 ft, site and datum then in use); minimum observed, 16 cfs Jan. 5, 

1937.

Remarks. Records good except those for periods of ice effect, or shifting control, which 

are fair. Several diversions for irrigation and domestic use. No regulation.

Cooperation. Gage-height record furnished by the Washington Water Power Co. 

Revisions (water years).--WSP 1217: Drainage area. WSP 1317: 1931(M), 1935(M).

Rating table 

control (j

Oct. 1

0.6

0.8

1.1

1.5

2.0

3.0

4.0

5age height,

to Dec. 22

24

43

82

155

275

585

960

In feet, and

Dec. 22

0.5

0.7

1.0

1.5

2.0

3.0

discharge,

to May 10

34

64

119

238

380

710

in cubic feet

May 11 tc

2.2

2.4

2.7

3.0

3.5

4.0

:t or shifting 

per second)

) Sept. 30

38

60

110

172

305

470

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

36

35

34

35

36

36

35

36

40

55

45

40

38

38

37

36

36

36

36

36

36

36

36

36

35

36

36

36

37

40

38

1,158

37.4

2,300

Nov.

38

*36

38

40

43

42

42

42

40

42

42

38

35

33

3J.

32

35

40

54

50

53

50

50

50

54

56

6O

59

58

55

1,339

44.6

2,660

Dec.

55

55

54

53

50

*51

50

50

48

48

50

69

78

70

65

60

55

55

60

72

223

*720

582

334

226

184

162

142

113

103

92

4,029

130

7,990

Jan.

90

86

83

83

74

71

69

69

64

61

58

54

64

61

72

149

149

*136

119

115

107

95

90

85

72

62

60

55

50

45

40

2,488

80.3

4,930

Feb.

40

40

40

40

45

50

47

42

44

40

40

61

42

40

37

35

35

35

35

37

111

54

47

42

40

40

37

40

42 -

1,278

44.1

2,530

Mar.

172

134

88

81

74

67

64

67

62

58

50

51

*53

48

56

58

81

103

167

176

201

260

276

290

313

~zSS 321

206

*184

172

186

4,387

142

8.700

Apr.

179

158

140

»130

127

119

117

115

117

142

196

227

249

271

299

350

315

271

*246

282

307

386

416

416

365

333

318

290

254

211

7,346

245

14,570

May

181

167

164

196

214

224

230

350

440 *il°

*432

404

352

312

278

281

340

370

373

382

367

*346

352

364

336

340

349

316

308

305

290

9,833

317

19,500

June

275

266

238

240

208

193

181

161

159

157

148

136

122

122

142

130

118

110

114

*112

104

97

97

89

86

81

77

73

73

. . . 3£.

4,179

139

8,290

July

70

67

66

66

66

61

59

58

58

58

59

56

56

55

53

53

50

49

48

49

54

49

48

49

47

47

47

16

48

47

47

1,686

54.4

3,340

Aug.

47

49

48

47

45

43

*43

42

42

42

43

40

41

40

40

39

40

40

40

58

38

39

39

39

38

56

50

46

43

43

41

1,321

42.6

2,620

Sept.

41

41

41

41

40

41

40

41

41

40

40

40

39

40

40

39

38

*38

38

38

38

39

38

38

39

39

40

40

39

40

1,187

39.6

2,350

Calendar year 1955 : Max 720 Mln 32 Mean 68.6 Ac-ft 49,670

Water year 1955-56: Max 720 Mln 32 Mean 110 Ac-ft 79,780

* Discharge measurement made on this day.

Note_.--Stage-discharge relation affected by Ice Nov. 13-18, De 

Feb. 16-19. Shifting-control method used Mar. 21 to June 4.

14-19, Jan. 27 to Feb. 5,
CLEARWATER RIVER BASIN 23 ' 

Selway River near Lowell, Idaho

Location. Lat 46°05', long 115°31' ( in NEij sec. 25, T. 32 N., R. 7 E., on right bank a 

quarter of a mile upstream from O'Hara Creek and 7 miles upstream from Lowell.

Drainage area. 1.910 sq mi, approximately.

Records available. April 1911 to September 1912 (gage heights, or fragmentary discharge 

records only), October 1929 to September 1956. Monthly discharge only for some periods, published in WSP 1317.

Sage. Water-stage recorder. Altitude of gage is 1,540 ft (from river-profile map). 

Apr. 11 to Sept, 2, 1911, staff gage at site 2 miles downstream at different datum. 

Feb. 7 to Sept. 22, 1912, and Oct. 14, 1929, to Nov. 19, 1930, staff or chain gages 

at nearby sites at different datum.

Average discharge. 87 years (1929-56), 3,631 cfs (2,629,000 acre-ft per year).

Extremes. Maximum discharge during year, 41,200 cfs May 24 (gage height, 14.28 ft); 

minimum, 545 cfs Sept. 20 (gage height, 2.76 ft).

1929-56: Maximum discharge, 48,900 cfs May 29, 1948 (gage height, 16.04 ft); 

minimum, probably less than 100 cfs Jan. 8, 1937, during period of ice effect.

Remarks. Records excellent except those for period of ice effect, which are good, and 

those for period of no gage-height record, which are fair. Small diversions from 

headwaters.

Revisions.--WSP 1043: Drainage area.

Rating tables, water year 1955-56, except period of ice effect ( 

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

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

2.9

3.0 

3.5 

4.0 

5.0 

6.0 

7.0

666

748

1,220

1,810

3,360

5,440

8,080

2.7 

3.0 

3.5 

4.0 

4.5 

5.0

50O 

730 

1,210 

1,810 

2,580 

3,510

6.0

7.0

9.0

11.0

14.0

5,870

6,770

16,100

25,000

39,800

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ttotal

Mean

Cf sin

In.

Ac- ft

Oct.

715 

699

682

723

1,100

1,060

916

916

944

1,070

,210

,130

,160

,120

,060

1,000

934

880

861

843

834

843

852 

817

791

808

834

889

1,070

1.600

1,560

29,921

965

0.505

0.58

59,350

Nov.

1,190 

*1,05O

1,010

1,260

1,970

1,540

1,300

1,200

1,240

3,940

4.290

2,710

1,880

1,840

1,40O

1,070

1,330

1,760

1,880

2,070

1,910

1,730

1,580 

1,540

1,540

1,860

2,150

1,890

1,760

1,660

53,550

1,785

0.935

1.04

106,200

Dec.

*1,620 

1,560

1,480

1,380

1.180

1,220

1,420

1,260

1,230

1,250

1,310

1,940

2,110

1,500

1,260

1,620

1,620

1,540

1,570

1,730

2,370

8,000

9.500 

7,500

5,200

4,800

4,300

3,700

3,200

2,800

2,800

83,970

2,709

1.42

1.63

166,600

Jan.

2.800 

S.700

2,500

2,500

2,500

2,200

2,100

2,100

2,000

1,900

1,900

1,800

*1,740

1,730

1,840

2,000

1,950

1,870

1,820

1,780

1,740

1,720

1,800 

1,760

1,620

1,280

1,500

1,580

1,500

1,400

1,010

58,640

1,892

0.991

1.14

116,300

Feb.

793 

b940

bl,200

bl,400

bl.450

bl,450

1,360

1,300

1,180

1,190

,220

,330

,290

,210

,it>0

874

950

,220

,200

,160

,150

,190

,230 

,180

,150

,150

,130

,120

1,130

34,297

1,183

0.619

0.67

68,030

Mar.

 1,170 

1,500

1,580

1,480

1,380

1,230

1,190

1,300

1,230

1,170

1,110

1.050

1,100

1,120

1,070

1,070

1,200

1,500

1,940

2,220

2,510

3,020

3,820 

*5,150

6,630

7,520

6,140

4,900

4,310

4,040

4,200

78,830

2,543

1.33

1.53

156,400

Apr.

4,040 

3,780

3,550

3,330

3,200

2.990

3,020

2,990

3,180

4,170

6,060

7,350

8,270

9,440

11,000

12,300

11,200

10,400

11,300

13,400

16,200

19,100

20,400 

19,600

17,200

16,000

15,200

*14,100

12,600

11 , 300

296,670

9,889

5.18

5.78

588,400

Hay

10,500 

9,870

9,580

10,100

11,000

11,700

13,200

15,600

16,500

18,000

16,700

14,300

12,500

11,300

11,300

12,800

16,200

21,300

27,100

32 , 500

33,800

33,000

32,000 

 37,800

29 , 600

26,400

27,000

23,900

23,600

23,900

25,600

618,650

19,960

10.5

12.05

1^27,000

June

26.500 

24,500

21,200

20,700

17,600

14,300

12,200

12,300

14,000

14,800

14,200

12,500

 11,400

11,000

10,900

10,900

9,310

8,430

8,370

9,610

8,400

7,140

6,720 

7,380

6,970

6,190

5,950

5,870

5,660

4.950

349,950

11,660

6.10

6.81

694,100

July

4,500 

4,260

5,120

4,780

4,170

4,020

3,740

3,510

3,330

3,230

3,230

 3,100

2,840

2,930

2,650

2,410

2,250

2,120

2,010

1,910

1,840

1,760

1,650 

1,580

1,500

1,440

1,390

1,390

1,450

1,400

lj.,320

82,830

2,672

1.40

1.61

164,300

Aug.

1,260

1,200

1,200

1,160

1,110

1,100

1,130

1,110

1,040

990

950

920

892

865

856

901

838

802

*775

748

730

706

690 

690

722

874

1,210

1.440

1,110

1,150

1,080

30,249

976

0.511

0.59

60,000

Sept.

920 

B4T

793

775

748

730

722

706

682

666

635

628

628

612

590

575

568

560

552

552

635

722

658 

612

590

575

568

666

775

766

20,056

669

0.350

0.39

39,780

Calendar year 1955: Max 30,100 

Water year 1955-56: Max 37,800

Hin 

Hin

463

552

Mean 4,094 

Mean 4,748 Cfs

2.14 In. 29.08 Ac-ft 2,964,000 

2.49 In. 33.82 Ae-ft 3,446,000

Peak discharge (base, 18,000 cfs).--Apr. 23 (3 a.m.) 21,200 cfs (10.17 ft); May 10 (5 a.m.) 

18,400 cfs (9.54 ft); May 24 (8 a.m.) 41,200 cfs (14.28 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 22 to Jan. 12; discharge estimated on basis of weather records 

recorded range in stage, and records for Lochsa River and other nearby streams.
240 CLEARWATER RIVER BASIN

Lochsa River near Lowell, Idaho

Location. Lat 46°09', long 115°35', In SW^-SEj sec. 33, T. 33 H., R. 7 E., on right bank 

0.7 mile upstream from Lowell, 0.9 mile upstream from mouth, 1.2 miles downstream 

from Pete King Creek, and 19 miles east of Kooskla.

Drainage area. 1,180 sq mi, approximately.

Records available. October 1910 to September 1912, October 1929 to September 1956. 

Monthly discharge only for some periods, published in WSP 1317.

Gage. Water-stage recorder. Datum of gage is 1,452.98 ft above mean sea level, unadjusted. Prior to Nov. 21, 1930, staff gage at site 1 mile upstream at different datum.

Average discharge. 29 years (1910-12, 1929-56), 2,753 cfs (1,993,000 acre-ft per year).

Extremes. Maximum discharge during year, 28,500 cfs May 24 (gage height, 12.12 ft); minimum, 362 cfs Sept. 20 (gage height, 1.77 ft).

1929-56: Maximum discharge, 34,800 cfs June 10, 1933 (gage height, 13.44 ft), 

from rating curve extended above 25,000 cfs; minimum, probably less than 100 cfs 

Jan. 8, 1937, during period of ice effect.

Remarks. Records excellent.

Rating table year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dee. 22 Dec. 23 to Sept. 3O

1.9

2.0 

2.5 

3.0

480

560

1,000

1,560

4.0 

5.0 

6.0 

7.0

3,030

4,790

6,990

9,590

1.7 

2.0 

2.5 

3.0 

3.5 

4.0

320

515

940

1,500

2,170

2,960

5.0

6.0

8.0

10.0

12.0

4,890

7,170

12,900

20,000

28,OOO

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ae-ft

Oct.

512

504

488

584

864

756

640

608

632

875

1,130

920

882

837

756

712

672

632

608

584

576

592

616

584

552

624

640

664

828

1.570

1,240

22,482

725

0.614

0.71

44,590

Nov.

950

*819

801

960

1,590

1,280

1,020

960

1,000

2,510

2.650

1,850

1,320

1,280

1,010

873

1,010

1,230

1,450

1,570

1,430

1,300

1,170

1,120

1,170

1,640

1,690

1,450

1,550

1,250

59,663

1,322

1.12

1.25

78,670

Dee.,

*1,200

1,160

1,090

1,020

910

930

980

930

900

900

1,060

1,930

1,740

1,290

1,200

1,420

1,360

1,300

1,280

1,500

2,280

7,180

9,100

5,970

4,430

3,780

3,490

3,010

2,600

2,280

2,220

70 , 440

2,272

1.93

2.22

139,700

Jan.

2.230

2,160

2,030

2,060

2,020

1,800

1,720

1,750

1,600

1,510

1,560

1,490

*1,480

1,480

1,550

1,600

1,590

1,490

1,440

1,420

1,390

1,380

1,420

1,370

1,200

1,030

1,150

1,230

1,200

1,100

854

47,304

1,526

1.29

1.49

93,830

Feb.

755

845

980

1,120

1,160

1,150

1,100

1,020

950

930

950

1,140

1,040

970

902

764

892

940

950

912

912

1,020

1,010

940

912

902

892

864

883

27,805

959

0.813

0.88

55,150

Mar.

*940

1,260

1,230

1,120

1,050

970

950

950

940

902

836

800

836

827

827

836

921

1,120

1,360

1,500

1,700

2,060

2,630

*3,060

3,830

4.470

3,740

3,040

2,740

2,680

2,930

53,055

1,711

1.45

1.67

105, 200

Apr.

2,730

2,580

2,460

2,350

2,320

2.180

2,280

2,290

2,530

3,380

4,740

5,410

6,010

6,980

8,100

9,050

8,050

7,600

8,340

9,920

J.2,000

14,200

14.800

14,800

13,000

12,200

11,700

 10,700

9,550

8,570

220,820

7,361

6.24

6.96

438,000

May

8,050

7,840

7.600

7,900

8,210

8,670

9,940

11,700

12,800

14,700

13,200

11,200

9,720

8,840

9,080

10,700

13,600

17,400

20,800

23,700

24,600

24,400

23,400

*26,4QO

21 , 900

20,000

19,800

17,300

18,000

18,000

19,100

468,550

15,110

12.8

14.77

929,400

June

19.900

19,400

16,500

15,800

13,600

11,200

9,210

9,100

10,200

11,100

10,600

9,020

*8,180

7,870

8,130

8,490

7,440

6,590

6,340

7,220

6,570

5,540

5,170

5,630

5,190

4,620

4,350

4,250

4,050

5.640

264,900

8,830

7.48

8.35

525,400

July

3,330

3,170

4, 720

4,580

3,680

3,380

3,150

2,910

2,740

2,580

2,520

*2,360

2,260

2,260

2,090

1,920

1,790

1,670

1,590

1,510

1,460

1,380

1,310

1,250

1,180

1,130

1,080

1,040

1,040

1,030

1.010

67,120

2,165

1.83

2.12

133,100

Aug.

990

930

930

902

854

827

827

827

791

746

712

678

654

630

638

712

678

606

575

*552

545

522

508

501

515

630

809

854

712

782

738

22,175

715

0.606

O.7O

43,980

Sept.

622

568

530

515

508

494

480

473

459

445

432

426

419

412

400

393

380

374

374

374

466

538

508

452

426

406

406

459

487

622

13,848

462

0.392

0.44

27,470

Calendar year 1955 : Max 22,700 Min 390 Mean 3,034 Cfsm 2.57 In. 34:91 Ac-ft 2,196,000

Water year 1955-56 : Max 26,400 Min 374 Mean 3,602 Cfsm 3.05 In. 41.56 Ac-ft 2,614,OOO

Peak discharge (base. 12.000 cfs). Dee. 22 (2 p.m.) 13.30O cfs (8.25 ft); Apr. 24 (2 a.m.) 

15,500 cfs (8.78 ft); May 10 (2 p.m.) 15,000 cfa (8.65 ft); May 24 (10:30 a.m.) 28,50O cfs (12.12 ft}. 

* Discharge measurement made on this day.
CLEARWATER RIVER BASIN 241

South Pork Clearwater River near Elk City, Idaho

Location. Lat 45°49', long 115°32', in NE£ sec. 25, T. 29 N., R. 7 E., on right bank Just 

upstream from bridge on road to Orogrande, 0.2 mile upstream from Crooked River and 

41 miles west of Elk City.

Drainage area. 261 sq mi.

Records available. September 1944 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 3,816.27 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to June 23, 1949, wire-weight gage at 

site 24 ft downstream and at datum 6.14 ft lower.

Average discharge. 12 years, 258 cfs (186,800 acre-ft per year).

Extremes. Maximum discharge during year, about 2,200 cfs Apr. 23 or 24. during period of 

no gage-height record; minimum, 26 cfs Oct. 25 (gage height, 1.43 ft).

1944-56: Maximum discharge observed, 3,700 cfs May 29, 1948 (gage height, 13.06 ft, 

site and datum then in use); minimum daily, 10 cfs Nov. 28, 29, 1952.

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

which are fair. No regulation or diversion above station except for mining operations.

Rating table, water year 1955-56, except period of Ice effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Apr. 28 to May 23)

Discharge, In

1.5 29

1.6 38

1.8 62

2.0 96

ubic feet per

2.4 

2.8 

3.2 

3.6

190

304

444

640

4.0

4.5 

5.0 

5.8

870

1,190

1,540

2,140

second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

1

2

3

4

5

6

7

8

29

30

31

Tobal

Mean

Of sm

In.

Ac-ft

Oct.

46

44

41

54

112

87

70

65

62

58

68

75

82

67

59

54

50

47

46

47

46

45

50

46

42

49

59

58

73

116

114

1,932

62.3

0.239

0.28

3,830

Nov.

*76

58

78

100

169

92

92

80

98

320

335

162

90

80

65

50

60

85

105

130

110

90

85

85

85

95

105

98

94

90

3,262

109

0.418

0.46

6,470

Dec.

85

82

*80

65

60

70

70

65

65

65

70

110

100

70

75

85

85

80

80

90

150

250

300

230

180

170

170

150

120

100

110

3,482

112

0.429

0.50

6,910

Jan.

120

120

110

110

110

100

95

95

90

90

85

85

85

80

*95

160

150

130

120

120

110

110

110

100

80

80

85

85

85

80

65

3,140

101

0.387

0.45

6,230

Feb.

70

75

95

100

95

90

80

70

70

75

72

72

72

70

64

50

55

65

65

65

65

70

72

68

65

65

65

65

*65

------

2,070

71.4

0.274

0.29

4,110

Mar.

68

72

76

75

70

65

66

68

68

65

65

60

65

64

63

62

70

85

100

110

130

200

280

400

*500

600

500

404

365

355

375

5,546

179

0.686

0.79

11,000

Apr.

352

310

289

274

268

251

265

271

326

450

600

800

900

,050

,150

,300

,200

,050

,200

,450

,700

,900

,100

,100

,850

,650

,550

* ,430

,270

,160

30,466

1,016

3.89

4.34

60,430

May

,060

,010

,050

,180

,250

,220

,250

,310

,320

,450

,430

,270

,200

,080

,060

,110

,230

,310

,460

,560

,580

* ,550

,500

,640

,450

,320

,390

,180

,070

982

918.

39,390

1,271

4.87

5.61

78,130

June

882

858

750

717

734

640

565

507

466

428

404

*379

355

338

375

484

400

342

310

397

361

310

274

304

265

248

231

217

206

195

12,942

 431

1.65

1.84

25,670

July

195

195

242

223

193

190

174

162

149

139

130

125

*121

159

134

118

110

102

96

91

87

82

76

73

72

68

65

80

87

96

76

3,910

126

0.483

0.56

7,760

Aug.

70

65

64

61

59

57

57

57

50

49

47

45

44

41

42

45

*44

39

37

35

34

34

32

32

59

85

162

167

87

85

68

1,853

59.8

0.229

0.26

3,680

Sept.

58

52

46

44

44

42

41

40

38

37

36

35

35

55

34

33

32

32

31

31

38

40

36

34

33

32

52

45

50

46

1,162

38.7

0.148

0.17

2,300

Calendar year 1955 : Max 1,900 Min 50 Mean 274 Cfsm 1.05 In. 14.26 Ac-ft 198,500

Water year 1955-56 : Max 2,100 Mln 51 Mean 298 Cfsm 1.14 In. 15.55 Ac-ft 216,500

Peak discharge (base, 1,500 cfs).--Apr. 23 or 24 (time unknown) about 2,200 cfs 

(3 to 6 a.m.) 1,490 cfs (5.03 ft); May 24 (10 a.m.) 1,730 cfs (5.36 ft). 

* Discharge measurement made on this day.

May 11

Note.--No gage-height record Apr. 10-27; discharge estlma 

for station near Srangevllle, and other nearby streams. St

13 to Mar. 27.

in basis of weather records, records 

Stage-discharge relation affected by Ice
242 CLEARWATER RIVER BASIN

South Fork Clearwater River near Grangeville, Idaho

Location. Lat 45°55' , long 116°01' , in SE^NW^ sec. 30, T. 30 N. , R. 4 E , on right bank 

Just downstream from powerhouse of Washington Water Power Co., 6 miles east of 

Grangeville.

Drainage area. 865 sq mi.

Records available. November 1910 to January 1911, March 1911 to July 1911, October 1911 

to September 1916, April 1923 to September 1956. Monthly discharge only for some 

periods, published in WSP 1317.

Gage. Water-stage recorder. Altitude of gage is 1,830 ft (from river-profile map).

Nov. 14, 1910, to July 31, 1911, staff gage at datum 2.2 ft higher than present datum. 

Nov. 2, 1911, to Sept. 30, 1916, staff gage at datum 1.0 ft higher than present datum. 

Apr. 1, 1923, to Oct. 15, 1944, chain or staff gages at present datum.

Average discharge . 38 years (1911-16, 1923-56), 862 cfs (624,100 acre-ft per year).

Extremes. Maximum discharge during year, 6,900 cfs May 24 (gage height, 9.01 ft, momentary release from powerplant pondage); maximum natural discharge, 6,770 cfs May 24 

(gage height, 8.94 ft) occurred just after release; no flow part of day Aug. 15; minimum daily, 141 cfs Sept. 19, 20.

1910-16, 1923-56: Maximum discharge observed, 12,600 cfs May 29, 1948 (gage height, 

12.50 ft); no flow part of day Aug. 27, 1947, Aug. 15, 1956; minimum daily, 29 cfs 

Nov. 23, 27, 29, 1952.

;ood, and those for 

Low stages caused by

Remarks. Records excellent except those below 200 cfs, which are 

periods of ice effect, which are fair. Diurnal fluctuation at 

powerplant Just above station. No diversion for irrigation.

Cooperation. Water-stage recorder inspected by employees of Washington Water Power Co. 

in connection with a Federal Power Commission project.

Revisions. WSP 633: Drainage area.

Rating tables, water year 1955-56, e 

height, in feet, and discharge

Oct. 1 to Apr, 23

_ept periods of ice effect (gage 

in cubic feet per second)

Apr. 24 to Sept. 30

2.9 184

3.0 215

3.5 415

4.0 650

4.5 980

5.0 

6.0 

7.0 

8.0 

9.0

1,390

2,350

3,600

5,080

6,650

2.7 131

3.0 219

3.5 430

4.0 685

4.5 990

5.0 1,370

6.0 3,350

7.0 3,600

8.0 5,140

9.0 6,880

Discharge, in cubic feet per second, wate yea October 1955 to September 1955

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Ac -ft

Oct.

206

193

184 215

349

328

277

261

229

258

320

304

324

300

265

240

226

215

209

218

209

218

240

218

206

236

265

250

284

397

438

8,082

261

0.302

0.35

16,030

Nov .

*328

250

269

332

518

402

328

316

332

763

1,160

536

312

288

240

190

27T

397

478

575

496

428

379

374

374

415

464

442

428

406

_____

12,497

417

0.482

0.54

24,790

Dec.

388

374

*362

296

280

312

316

304

312

296

316

505

460

308

349

392

384

353

379

410

625

1,160

1,400

1,100

861

777

819

710

541

500

523

16,112

520

0.601

0.69

31,960

Jan.

560

570

528

523

496

464

451

451

406

415

410

392

397

384

456

*758

704

645

580

560

541

528

523

482

388

366

420

402

424

379

£92

14,895

480

0.555

0.64

29,540

Feb.

b270

b300

b350

b400

b410

b400

366

328

324

341

332

336

332

320

292

226

b260

b310

328

308

3O4

328

332

312

308

304

304

*304

308

------

_____

9,337

322

0.372

0.40

18,520

Mar.

312

336

357

349

332

296

308

312

312

300

292

269

300

288

284

288

316

384

478

523

585

826

1,020

1,400

1,750

*2,200

1,820

1,460

1,340

1,280

1,380

21,697

700

0.809

0.93

43,040

Apr.

1,280

1,160

1,080

1,010

988

882

924

903

1,030

1,400

1,900

2,440

2,740

3,110

3,460

3,900

3,570

3,290

3,570

4,180

4,960

5,580

6,060

6,O4O

5,400

4,820

*4,500

4,180

3,770

3,420

_____

91,547

3,052

3.53

3.94

181,600

May

3,140

2,980

3,010

3,590

4,100

4,010

4,100

4,370

4,470

4,840

4,680

4,140

3,710

3,360

3,290

3,490

3,940

4,610

5,340

5,870

5,960

5,820

*5,670

6,520

5,580

5,190

5,630

4,710

4,440

4,240

4,ZOO

139,000

4,4,84

5.18

5.98

275,700

June

4,240

3,950

3,540

3,450

3,330

2,960

2,650

2,54O

2,540

2,490

2,360

*2,150

1,990

1,880

2,440

2,690

2,320

1,960

1,830

2,010

1,880

1,630

1,520

1,610

1,450

1,320

1,250

1,200

1,130

1,050

______

67,360

2,245

2.60

2.90

133,600

July

1,000

976

1,100

1,020

920

896

836

788

740

707

707

658

*630

674

636

560

520

490

47O

440

421

394

376

358

349

300

3T8

344

372

362

340

18,702

603

0.697

0.80

37,090

Aug.

308

291

304

287

287

283

259

263

255

230

237

209

219

202

199

223

209

199

*183

177

177

172

166

163

166

329

490

540

349

295

271

7,942

256

0.296

O.34

15,750

Sept.

241

212

202

199

180

186

180

177

172

166

160

157

160

157

152

147

144

144

141

141

163

169

163

152

147

144

144

189

*199

193

5,081

169

0.195

0.22

10,080

Calendar year 1955: Max 6,380 Min 130 Mean 1,016 cfsm 1.17 In. 15.95 Ac-ft 735,400

Water year 1955-56: Max 6,520 Min 141 Mean 1,126 Cfsm 1.30 In. 17.73 Ac-ft 817,700

Peak discharge (base, 5,20O efs). Apr. 24 (8 a.m.) 6,38O cfs (8.72 ft); May 10 (11:30 p.m.) 

4,950 cfs (7.88 ft); May 24 (2:30 p.m.) 6,770 cfs (8.94 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
CLEARWATER RIVER BASIN 243

Clearwater River at Kamiah, Idaho

Location. Lat 46°14', long 116°01', in sec. 1, T 33 N., R 3 E., on left bank a quarter 

of a mile downstream from highway bridge at Kamiah, three-quarters of a mile downstream from Lawyer Creek, and 6 miles downstream from South Fork.

Drainage area. 4,850 sq mi, approximately. 

Records available . August 1910 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,162.52 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Oct. 2, 1934, staff or chain gages 

at site 300 ft downstream at same datum.

Average discharge.--46 years, 8,121 cfs (5,879,000 acre-ft per year).

Extremes.--Maximum discharge during year, 77,800 cfs May 24 (gage height, 16.59 ft); minimum, 1,180 cfs Sept. 19, 20 (gage height, 3.35 ft).

1910-56: Maximum discharge, 99,000 cfs May 29, 1948 (gage height, 19.22 ft); minimum, 179 cfs about Dec. 1, 1952 (gage height, 1.98 ft).

Remarks. Records excellent except those below 5,000 cfs, which are good. Some diurnal 

regulation at low stages caused by powerplant on South Fork.

Rating tables, water year 1955-56 (gage height, in feet, and discharge 

in cubic feet per second)

Oct. 1 to Nov. 30 Dec. 1 to Sept. 30

5.0 

6.0

7.0

1,400

2,150

4,060

6,620

9,820

3.3 

3.6

4.0 

4.5 

5.0 

6.0

1,130

1,460

2,020

2,890

3,940

6,780

7.0

8.0

9.0

11.0

13.0

16.0

10,100

13,700

18,100

30,400

45,900

72,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Ocb.

1,540

1,480

1,450

1,490

2,180

2,540 

2,010

1,880

1,840

2,150

2,880

2,660

2,480

2,410

2,250

2 , 060

1,930

1,820

1,730

1,670

1,660

1,660

1,740 

1,670

1,590

1,670

1,840

1,800

2,130

3,110

5,850

65,150

2,036

0.420

0.48

125,200

Nov.

2,960

2,430

*2,240

2,460

3,910

3,930 

3,110

2,810

2,750

5,530

9,680

6,170

4,190

5,600

5,090

2,150

2,570

3,160

5,740

5,250

4,980

4,500

5,770 

3,500

3,620

4,530

6,310

4,980

4,420

4,100

119,820

3,994

0.824

0.92

237,700

Dec.

*4,010

3,780

3,530

3,240

2,740

2,650 

2,980

2,800

2,650

2,660

2,870

5,890

5,800

3,890

2,850

3,430

3,710

5,280

5,300

4,180

8,250

17,300

24.600 

16,400

12,300

11,000

10,700

8,970

7,650

6,350

5,950

199,670

6,441

1.55

1.55

596,000

Jan.

6,160

6,250

5,770

6,070

5,950

5,180 

4,870

4,870

4,510

4,160

4,200

*4,080

4,080

4,180

4,650

6,590

6,280

5,590

5,100

4,840

4,650

4,510

5,070 

4,810

4,130

5,410

3,320

3,760

3,580

3,380

_2,_590

146,590

4,729

0.975

1.12

290,800

Feb.

1,920

1,940

2,520

5,450

5,320

3,280 

5,100

2 , 350

2,660

2,650

2,650

5,080

3,200

2,800

2,570

1,960

2,020

2,490

2,610

2,560

3,150

3,360

5,280 

5,060

2,890

2,850

2,760

2,700

2,740

-----

80,480

2,775

0.572

0.62

159,600

Mar.

3,000

*4,650

5,770

4,670

3,920

5,560 

3,060

3,160

5,140

2,930

2,740

2,500

2,610

2,590

2,560

2,540

2,890

4,010

5,560

*6,720

8,450

10,200

11,400 

13,200

15,500

*17,900

15,200

12,300

10,900

10,300

11,100

208,830

6,736

1.39

1.60

414,200

Apr.

10,600

9,820

9,140

8,680

8,410

7,750 

7,730

7,730

8,050

9,890

13,400

16,400

18,300

20,500

25,900

27,600

25,800

25,100

24,500

28,800

34,800

40,500

44,100 

43,700

58,600

55,700

55,600

51,200

28,400

*24,700

-----

665,180

22,170

4.57

5.10

tl,519

May

22,800

21,500

20,800

22 300

24,800

25,400 

28,000

55 , 000

35,100

39,400

57,700

32,100

28,000

24,700

24,200

27,200

33,400

43,500

54,000

63,000

66,100

*65,400

62,800 

71,600

61,400

55,900

55,500

48,000

47,700

47,300

49,100

*1,269.5

40,950

8.44

9.75

*2,518

June

52,400

50,200

43,500

41,700

37,300

30,100

25,400

24,400

26,800

29,000

28,800

*24,800

22,100

21,000

21,800

23,400

20,600

17,800

17,000

18,800

18,100

15,300

14,200 

14,800

14,600

13,000

12,500

12,000

11,600

10,700

715,500

25,780

4.90

5.47

*1,415

July

9,820

9,180

10,800

11,600

9,820

9,140 

8,610

8,020

7,570

7,220

*7,060

6,810

6,470

6,470

6,150

5,470

4,980

4,650

4,360

4,150

5,940

5,760

3,530 

3,340

3,180

5,020

2,910

2,850

2,910

2,950

2^.7gO

185,480

5,919

1.22

1.41

363,900

Aug.

2,680

,520

,450

,440

,320

g ,260 

g ,300

,260

,200

g ,150

g ,070

gl,920

gl,840

gl,790

gl,760

gl,830

gl,790

gl,720

gl,620

*1 , 540

1,500

1,460

1,440 

1,440

1,470

1,700

2,420

5,200

2,560

2,280

2,500

63,230

2,040

0.421

0.48

125,400

Sept.

,980

,770

,630

,550

,520

,490 

,470

,450

,420

,380

,340

,320

,310

,300

,270

,250

,220

,200

,190

,180

,250

,460

,490 

,360

,280

,240

,220

,310

,500

,590

------

41,920

1,397

0.288

0.52

83,150

Calendar year 1955 : Max 60,300 Min 1,030 Mean 8.707 Cfsm 1.80 In. 24.37 Ac-ft 6,303,000

Water year 1955-56 : Max 71,600 Min 1,180 Mean 10,260 Cfsm 2.12 In. 28.78 Ac-ft 7,448,000

Peak discharge (base, 28.200 cfs).--Apr. 23 (8 a.m.) 45,600 cfs (12.96 ft); May 10 (11 a.m.) 

407100 cfs (12.28 ft); May 24 (1 p!m.) 77,800 cfs (16.59 ft). 

* Discharge measurement made on this day. 

t Expressed in thousands, 

g Computed from graph based on once-daily staff-gage readings.
244 CLEARWATER RIVER BASIN

North Fork Clearwater River at Bungalow ranger station, Idaho

Location.--Lat 46°38', long 115°30', in sec. 18, T. 38 N., R. 8 E. , on left bank at 

Bungalow ranger station, 300 ft downstream from mouth of Orogrande Creek, 1,000 ft 

downstream from highway bridge, and 17 miles northeast of Pierce.

Drainage area. 996 sq mi.

Records available.--September 1944 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,240 ft (from river-profile map).

Average discharge .--12 years, 2,934 cfs (2,124,000 acre-ft per year).

Extremes. Maximum discharge during year, 22,600 cfs May 20 (gage height, 9.74 ft); minimum, 633 cfs probably on Feb. 15, when clock was stopped, and Sept. 20; minimum gage 

height, 2.67 ft probably Feb. 15.

1944-56: Maximum discharge, 27,400 cfs May 29, 1948 (gage height, 11.13 ft); minimum daily, 180 cfs Nov. 29, 1952.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are fair. No regulation or diversion above station.

Cooperation.--Water-stage recorder inspected by U. S- Forest Service ranger at Bungalow 

ranger station.

Rating table, water year 1955-56, except periods of ice effect I 

height, In feet, and discharge., in cubic feet per second)

2.6 570

3.0 980

3.5 1,680

4.0 2,610

4.5 3,720

5.0 5,070

6.0 8,220

8.0 15,600

10.0 23,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

740 

710

'5oT 690 

1,240

958

848

826

881

2,020

1,800

1,260

1,150

1,050

969

914

881

848

826

804

782

837

826

771

760

826

870

1,000

1,150

1,960 

1,460

31,461

1,015

1.02

1.17

62 , 400

Nov.

1,160 

1,030

1,080 

*1,520

2,280

1,570

1,360

1,240

1,330

5,500

2,720

2,070

1,660

bl,500

bl,200

bl,100

bl,200

bl,400

bl,800

1,920

1,650

1,520

1,400

1,370

1,430

1,980

1,760

1,540

*1,430

1,360

47,880

1,596

1.60

1.79

94,970

Dec.

1,310 

1,240

1,200 

1,140

1,050

bl,150

bl,200

1,130

1,160

1,100

1,290

2,990

1,990

1,340

bl,300

bl , 550

bl,600

bl,400

bl,300

bl,900

3,70O

10,800

10,500

6,610

4,980

4,200

3,870

3,320

2,860

2,490 

2,590

84,240

2,717

2.73

3.15

167,100

Jan.

2,650 

2,490

2,370 

2,470

2,350

2,070

2,070

2,050

1,820

1,820

1,820

1,710

1,710

*1,660

1,710

1,820

1,680

1,570

1,550

1,520

1,500

1,500

1,540

1,460

1,310

1,060

bl,300

bl,400

bl,300

bl,200 

bl.OOO

53,460

1,725

1.73

2.00

106,000

Feb.

bSOO 

900

1,100 

1,250

1,550

1,350

1,200

1,150

1,150

1,150

1,200

1,250

1,200

1,150

1,050

850

900

1,050

1,100

1,100

1,100

1,150

1,150

1,100

1,050

1,050

1,050

1,050

1,050

-----

32,000

1,103

1.11

1.19

63,470

Mar.

1,100 

1,300

1,450 

1,350

1,250

1,100

1,100

1,150

1,100

1,100

1,000

1,000

1,190

1,140

992

969

1,090

1,240

1,440

1,520

1,580

1,980

2,470

2,840

3,550

4,150

3,250

2,670

2,490

2,530 

2,920

54,011

1,742

1.75

2.02

107,100

Apr.

2,690 

2,510

2,450 

2,410

2,350

2,280

2,450

2,410

2,550

3,580

5,220

5,660

6,550

7,580

8,700

9,390

8,290

7,980

8,940

10,300

11,700

13,400

15,800

13,700

12,000

11,400

11,300

10,700

*9,500

8,590

220,380

7,346

7. 38

8.23

437,100

May

8,220 

8,080

7,750 

8,050

8,390

8,940

10,200

11,900

13,000

14,000

13,000

11,200

10,000

9,500

10,100

11,700

13,800

16,100

18,500

20,700

21,200

20, 300

19,300

*19,900

17,400

16,400

15,700

14,600

14,700

14,600 

15,400

422,630

13,630

13.7

15.78

838,300

June

15,600 

15,000

13,500 

12,700

11,200

9,800

8,590

8,220

8,700

9,220

8,870

7,810

7,190

*6,900

7,290

7,420

6,460

5,900

5,750

6,520

5,600

5,010

4,750

4,700

4,340

4,050

3,900

3,800

3,600

3,360

225,750

7,525

7.56

8.43

447,800

July

3,180 

3,300

5,780 

4,310

3,740

3,480

3,250

3,050

2,900

2,760

2,860

*2,570

2,470

2,530

2,260

2,110

1,990

1,920

1,830

1,760

1,730

1,650

1,570

1,520

1,460

1,420

1,370

1,330

1,370

1,510 

1,310

74,090

2,390

2.40

2.77

147,000

Aug.

1,270 

1,250

1,240 

1,190

1,160

1,140

1,180

1,150

1,080

1,030

1,020

1,000

969

947

947

969

925

892

881

859

*848

826

815

837

870

,040

,220

,160

,000

t i J.3U ^n

925

31,750

1,024

1.03

1.19

62,980

Sept.

870 

826

815 

804

782

771

760

750

750

720

710

710

700

690

680

670

660

651

642

670

826

857

720

680

660

651

690

892

870

1,000

22,457

748

0.751

0.84

44,500

Calendar year 1955: Max 16,800 Min 450 Mean 2,815 Cfsm 2 . 83 In. 38.37 Ac-ft 2,038,000

Water year 1955-56: Max 21,200 Min 642 Mean 3,552 Cfsm 3.57 In. 48.56 Ac-ft 2,579,000

Peak discharge (base, 9,000 cfs). Dec. 22 (9 p.m.) 14,400 cfs (7.68 ft); Apr. 22 (12 p.m.)

14,600 cfs (7.76 ft)j May 9 (11 p.m.) 14,500 cfs (7.69 ft); May 20 (11 p.m.) 22,600 cfs (9.74 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Feb. 2 to Mar. 12; discharge estimated on basis of weather records,

records for station at Ahsahka, and other nearby stations.
CLEARWATER RIVER BASIN 245

Location. 

Bruce

North Pork Clear-water River near Ahsahka, Idaho

in.--Lat 46°31', long 116°18', in SE£ sec. 26, T. 37 N., R IE., on right bank at 

e's Eddy, l| miles northeast of Ahsahka and 2 miles upstream from mouth.

Drainage area. 2,440 sq mi, approximately. 

Records available. August 1926 to September 1956.

Gage. Water-stage recorder. Datum of gage is 969.82 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Oct. 29, 1930, staff gage at site 

300 ft upstream at different datum.

Average discharge. 30 years, 5,632 cfs (4,077,000 acre-ft per year).

Extremes. Maximum discharge during year, 42,800 cfs May 21: maximum gage height. 

22.05 ft Dec. 23; minimum discharge, 1,310 cfs Sept. 20 (gage height, 2.99 ft).

1926-56: Maximum discharge, 100,000 cfs Dec. 23, 1933 (gage height, 35.5 ft, from 

floodmarks) , from rating curve extended above 24,000 cfs by logarithmic plotting; minimum, probably less than 250 cfs Jan. 8, 1937, during period of ice effect.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are fair. No regulation or diversion above station.

Rating table, water year 1955-56, except periods of ice effect (ga 

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

(Shifting-control method used Apr. 28, May 22-27)

3.0 

4.0 

5.0 

7.0 

9.0

1,320

2,120

3,150

5,730

8,820

11.0

13.0

16.0

19.0

22.0

12,400

16,600

24,000

32,800

42,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

5

4 

5

6

7

8

9

10

11

12

15

14

15

16 

17

18

19 

20

21

22

25

24

25

26

27

28

29

50

31

Total

Mean

Cfsm

In.

Ac-ft

Oct. 

1,540

1,470

1,420

1,420 

2,200

2,480

1,880

1,700

2,040

5,750

5,860

3,460

2,910

2,550

2,300

2,130 

1,990

1,900

1,830 

1,800

1,740

1,700

1,750

1,710

1,630

1,670

1,840

1,980

2,520

4,140

4,400

71,710

2,315

0.948

1.09

142,200

Nov.

3,110

2,570

*2 , 400

2,620 

5,620

4,470

3,580

5,160

5,050

6,570

8,140

5,770

4,380

3,970

b3,150

b2,300 

b2,600

b3,500

b4,000 

b5,100

4,190

5,580

3,310

3,230

3,550

6,190

6,610

4,960

*4,330

3,940

123,730

4,124

1.69

1.89

245,400

Dec.

3,760

3,570

3,360

3,170 

2,930

2,790

2,970

2,830

2,700

2,680

2,820

6,920

7,560

4,720

3,800

4,240 

4,290

3,790

3,560 

4,900

8,120

26,100

57,600

19,800

14,100

11,400

10,700

9,240

7,980

6,920

6,520

235,840

7,608

3.12

3.59

467,800

Jan.

6,460

6,250

5,880

5,900 

6,260

5,620

5,280

5,270

4,890

4,580

4,550

*4,410

4,380

4,370

4,460

6,020 

6,010

5,310

4,890 

4,680

4,510

4,470

4,750

4,710

4,370

3,750

3,700

3,970

3,790

5,570

a3,000

150,060

4,841

1.98

2.29

297,600

Feb.

a2,100

a2,100

a3,000

b3,800 

b3,800

b3,700

b5,500

b5,200

bS.OOO

2,950

2,930

5,140

5,190

2,880

2,680

2,010 

2,080

2,610

2,730 

2,710

2,700

2,810

2,850

2,710

2,630

2,610

2,590

2,540

2,590

------

-----

82,140

2,832

1.16

1.25

162,900

Mar.

2,700

*3,220

3,580

3,370 

3,080

2,810

2,740

2,880

2,800

2,690

2,490

2,400

2,560

2,600

2,480

2,490 

2,700

3,170

3,840 

4,470

5,020

*7,270

9,110

10,100

12,100

14.600

*12,100

9,500

8,510

8,560

9,500

165,240

5,550

2.18

2.52

327,700

Apr.

9,090

8,330

7,880

7,910 

7,830

7,430

7,750

7,910

8,070

10,400

15,600

18,200

19,300

21,500

24,200

25,900 

25,300

21,900

22,900 

25,400

29,000

32 , 400

55,200

32,600

28,300

26,000

25,800

24,600

21,700

*19,400

-----

573,800

19,130

7.84

8.75

1,138/300

May

18,500

17,700

17.100

17,400 

19,000

19,100

20,900

25,800

28,500

29,800

29,500

24,800

21,500

19,600

19,800

22,400 

26,400

31,000

34,800 

39,600

40,600

38,500

56,600

37,200

33,700

»30,600

29,900

26,500

26,600

26,100

26,900

855,800

26,960

11.0

12.74

1,658/300

June

28,700

26,700

25,900

22,300 

20,300

17,700

15,800

14,600

15,000

16,100

16,200

14,300

*13,100

12,500

13,300

14,400 

13,400

11,600

11,100 

11,400

11,100

9,720

9,160

8,790

8,460

7,850

7,560

7,480

7,200

6,700

------

416,420

13,880

5.69

6.35

826,000

July

6,310

6,020

8,460

8,920 

7,180

6,660

6,190

5,840

5,590

5,410

*5,970

5,730

5,060

5,060

4,670

4,300 

4,040

3,840

3,690 

3,540

3,510

3,330

3,150

3,050

E ( 900

2,800

2,700

2,610

2,580

2,590

2j470

144,150

4,650

1.91

2.20

285,900

Aug.

2,470

2,410

2,380

2,380 

2,300

2,220

2,200

2,220

2,120

2,040

1,970

1,940

1,900

1,850

1,830

1,850 

1,840

1,770

1,710 

1,670

*1,640

1,610

1,580

1,550

1,620

2,010

2,510

2.640

2,160

2,180

2,080

62,650

2,021

0.828

0.95

124,300

Sept.

1,790

1,690

1,610

1,590 

1,550

1,530

1,520

1,520

1,480

1,460

1,440

1,430

1,420

1,400

1,380

1,360 

1,330

1,330

1,520 

1,326

1,390

1,610

1,560

1,420

1,360

1,330

1,340

1,670

1,830

1,850

44,830

1,494

0.612

0.68

88,920

Calendar year 1955: Max 30,100 Mln 1,150 Mean 6,025 Cfsm 2.47 In. 35.52 Ac-ft 4,361,000

Water year 1955-56: Max 40,600 Mln 1,320 Mean 7,941 Cfsm 3.25 In. 44.30 Ac-ft 5,765,000

Peak discharge (base, 18,000 cfs). Dec. 23 (1:30 a.m.) 42,700 cfs (22.05 ft): Apr. 23 (7:: 

34,700 cfs (19.62 ft); May 11 (5 a.m.) 30,900 cfs (18.58 ft); May 21 (9:30 a.m.) 42,800 cfs 

(22.00 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for other 

stations in Clear-water River basin.

b Stage-discharge relation affected by ice.

23 (7:30 a.m.)
246 CLEARWATER RIVER BASIN

Potlatch Creek at Kendrick, Idaho

Location. Lat 46°37', long 116"39' , in NW£ seo. 25, T. 38 N. , R. 3 W. , near center of 

main span on upstream side of Mill Street Bridge in Kendrick, 0.9 mile downstream 

from Bear Creek and 3.2 miles upstream from Middle Potlatch Creek.

Drainage area. 460 sq mi, approximately.

Records available. October 1945 to September 1956.

Gage. Wire-weight gage read once daily. Datum of gage is 1,198.2 ft above mean sea 

level, unadjusted.

Average discharge. 11 years, 428 cfs (309,900 acre-ft per year).

Extremes. Maximum discharge observed during year, 7,000 cfs Dec. 22 (gage height,

1U .20 ft); minimum observed, 7.1 cfs Aug. 23, 25; minimum gage height observed, 4.37ft 

Oct. 3, 4.

1945-56: Maximum discharge, 13,000 cfs Feb. 26, 1948 (gage height, 12.6 ft, from 

floodmarks), by slope-area determination of peak flow; minimum observed, 4.3 cfs 

Aug. 25, 1946; minimum gage height observed, 3.28 ft Oct. 12-16, 1945.

Remarks. Records good except those for periods of ice effect, which are fair. No regulation or diversion.

Revisions (water years) . WSP 1093: 1946(M).

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

0

I

'2

'3

4

5

6

7

8

9

30 

31

 total

Mean

Cfsm

In.

Ac -ft

Oct.

26

19

16

16

29

44

33

27

45

246

134" 299

76

58

51

45

41

37

36

34

31

32

30

30

28

31

31

40

52

166

222

2,005

64.7

0.141

O.L6

3,980

Nov.

139

101

81

92

*266

185

148

122

106

170

258

160

114

blOO

b85

b80

blOO

b!60

b200

b250

b220

198

170

145

326

1,440

1,190

870

739

512

8,727

291

0.633

0.71

17,310

Dec.

464

*390

340

262

182

240

215

192

148

160

388

3,800

1,440

704

548

488

370

340

299

560

2,520

6,650

4, -790

2,350

1,480

1,280

1,570

1,130

690

418

464

34,872

1,125

2.45

2.82

69,170

Jan.

482

446

360

355

440

518

554

669

464

470

*402

355

458

446

662

5,600

2,590

1,550

1,110

926

823

870

1,160

950

690

494

566

412

424

312

350

23,808

768

1.67

1.92

47,220

Feb.

bl80

243

317

412

36O

290

258

b230

b200

b!90

192

236

312

290

215

192

250

258

258

262

250

278

286

299

299

299

278

266

286

7,686

265

0.576

0.62

15,240

Mar.

402

1,030

*1,350

1,010

725

614

440

396

360

290

243

192

270

198

218

229

335

634

1,120

2,050

2,770

*5.500

5,500

5,380

4,340

3,500

2,950

2,260

2,150

2,550 

2 930

51,936

1,675

3.64

4.20

103,000

Apr.

1,970

1,900

1,780

1,920

2,140

1,740

1,760

1,850

1,940

2,100

2,850

2,880

2,900

2,830

2,950

2,910

2,680

2,110

1,860

1,910

1,970

2,020

1,870

1,530

1,240

1 , 060

974

870

767

*655

57,936

1,931

4.20

4.68

114,900

May

578

536

512

530

816

669

566

830

1,550

1,070

1,260

926

795

655

548

488

452

412

380

345

304

258

243

290

270

290

*345

250

215

157

154

16,494

532

1.16

1.33

32,720

June

142

142

134

176

182

166

148

128

114

101

92

81

76

74

*154

464

365

222

179

182

179

145

117

106

99

85

76

72

64

58

4,323

144

0.313

0.35

8,570

July

56

55

55

65

62

54

50

45

41

*38

38

44

40

37

33

33

32

28

26

28

28

30

27

24

22

21

20

18

18

16

17

1,101

35.5

0.077

0.09

2,180

Aug.

15

14

14

16

14

14

13

12

12

12

10

10

9.6

9.3

9.0

8.4

9.0

9.0

8.1

8.1

7.8

*7.3

7.1

773

8.7

26

42

56

72

29

28

487.7

15.7

0.034

0.04

967

Sept.

23

20

17

16

14

13

13

14

11

11

11

10

9.9

9.9

9.6

9.6

9.9

9.6

9.9

10

10

11

12

12

9.9

10

10

16

29

22

393.3

13.1

0.028

0.03

780

Calendar year 1955: Max 6,650 Min 7.8 Mean 385 Cfsm 0.837 In. 11.37 Ac-ft 279,000

Water year 1955-56: Max 6,650 Min 7.1 Mean 573 Cfsm 1.25 In. 16.95 Ac-ft 416,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice
CLEARWATER RIVER BASIN 247

Clear-water River at Spalding, Idaho

Location. Lat 46°25', long 116°51' , in lot 22, sec. 22, T. 36 N., R. 4 W., on right bank

a quarter of a mile downstream from Lapwai Creek, three-eighths of a mile northwest of

Spalding Post Office, and 2,300 ft downstream from bridge on U. S. Highway 95.

Drainage area. 9,570 sq mi, approximately. 

Records available . March 1926 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 770.5 ft (estimated from datum of former gage). Prior to Sept. 21, 1928, staff gage at site 2,300 ft upstream at datum 

772.49 ft above mean sea level (datum of 1929, supplementary adjustment of 1947). 

Wire-weight gage on highway bridge 2,300 ft upstream at same datum as former staff 

gage, used as supplementary gage.

Average discharge.--30 years, 15,023 cfs (10,880,000 acre-ft per year).

Extremes.--Maximum discharge during year, 121,000 cfs May 24 (gage height, 19.60 ft); minImum7 2,610 cfs Sept. 19, 20, 21 (gage height, 2.87 ft).

1926-56: Maximum discharge, 177,000 cfs May 29, 1948 (gage height, 23.76 ft); maximum gage height, 25.6 ft Jan. 5, 1928 (present site and datum), from floodmark (ice 

Jam); minimum daily discharge, 500 cfs Jan. 9, 1937, Dec. 1, 1952.

Remarks. Records excellent except those for periods of ice effect, which are good. Small 

diversions from tributaries; slight diurnal fluctuation at times caused by powerplant 

on South Fork.

Rating table, water year 1955-56, except periods of ice effect (gage 

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

(Shifting-control method used May 18 to June 8)

2.5 2,010

3.0 2,780

4.0 4,890

5.0 7,780

6.0 11,400

8.0 21,200

10.0 33,000

12.0 47,000

14.0

16.0

19.0

64,300

84,700

119,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

0

1

3

4

5

6

7

8

9

30

31

Total

Mean

Cfsm

Ac-ft

Oct.

3,370

3,170

3,040

5,020

3,600

5,450

4,540

3,920

3,810

5,370

9,730

7,480

5,980

5,480

4,960

4,560

4,270

4,050

3,880

3,790

3,690

3,620

3,660

3,690

3,500

3,430

3,850

4,070

4,630

6,670

9,300

143,580

4,632

0.484

0.56

284,800

Nov.

7,260

5,840

5,170

5,140

*8,340

10,200

7,910

6,760

6,290

8,750

19,500

14,400

10,100

8,140

7,000

4.800

5,500

7,000

9,000

13,000

11,500

9,500

8,500

8,000

8,500

14,000

18,100

13,400

11,200

*10,100

282, 900

9,430

0.985

1.10

561,100

Dec.

9,520

9,090

8,470

7,810

6,980

6,460

6,760

6,700

6,350

6,170

6,490

16,800

18,700

12, 100

8,680

8,810

9,500

9,500

8,500

11,500

22,000

57 , 000

76,000

45,900

31,900

26,900

26,200

21,800

18,200

15,100

14,000

539,890

17,420

1.82

2.10

*1,071

Jan.

14,000

14,000

13,300

13,000

14,200

13,000

12,100

12,100

11,400

10,400

*10,200

10,100

10,000

10,200

10,800

20,600

20,000

16,500

14,300

13,200

12,300

12,000

12,800

13,200

11,600

9,880

9,090

9,480

9,260

8, 580

7.000

378,590

12,210

1.28

1.47

750,900

Feb.

5,000

5,000

6,600

9,200

9,000

8,800

8,000

7,600

7,000

6,600

6,600

7,600

8,000

7,500

6,600

5,000

5,200

6, 200

6,800

6,800

7,600

8,000

8,000

7,500

7,400

7,230

7,010

6,790

6,820

205,450

7,084

0.740

0.80

407,500

Mar.

7,230

10,000

*13,800

12,000

10,600

9,190

8,240

8,210

8,210

7,680

7,070

6,550

6,730

6,700

6,580

6.520

7,160

9,300

13,200

16,700

20,200

30,500

*32,600

35,500

41,200

48,000

39 OOO

30 ! 400

27,200

27,200

29,500

542,970

17,520

1.83

2.11

*1,077

Apr.

27 , 500

24,700

22,900

22,400

22,400

20,200

20,200

20,800

20,800

24,800

33,800

41,600

44,400

48,700

55,500

62,500

60,200

53,400

53,600

59,600

70,100

81,200

88,200

86,900

76,600

63,500

65,100

61,400

54,700

48,500

- - -- 

*1,441.2

48,040

5.02

5.60

*2,859

May

*44,500

41,900

40,700

41,100

47,300

47,800

50 , 800

62,000

69,700

74,900

76,000

64,600

55,400

48,500

46,900

50,800

60,200

74,400

90,600

105,000

112,000

110,000

106,000

111,000

104,000

*87 , 600

87,600

77,300

75,700

74,700

76,500

$2,215.5

71,470

7.47

8.61

*4,394

June

85,200

80,000

70,900

65,200

60,300

50,100

42,900

39,400

40,900

44,500

45,200

40,600

36,600

*34,600

55,300

40,000

58,800

32,400

30,200

30,700

32,300

27 , 500

25,000

24,200

24,700

22,300

20,800

20,200

19,700

18,400

H.,176.9

39,250

4.10

4.57

*2,334

July

16,800

15,600

17,400

22,100

18,000

16,200

15,200

14,200

13,400

*12,800

12,800

13,000

11,800

11,800

11,400

10,200

9,440

8,850

8,440

8,040

7,780

7,450

7,100

6,700

6,430

6,170

5,870

5,730

5,640

5 730

5*590

337,660

10,890

1.14

1.31

669,700

Aug.

5,400

5,220

5,040

5,060

4,920

4,700

4,630

4,650

4,580

4,380

-4,180

4,070

3,960

5,830

3,770

3,770

3,920

3,750

3,560

3,410

3,330

*3,250

3,210

3.170

3,190

3,620

4,700

5,750

5, 640

4,700

4,720

132,060

4,260

0.445

0.51

261,900

Sept.

4,240

3,810

3,560

3,370

3,290

3,230

3,170

3,150

3,110

3,020

2,980

2,910

2,890

2,850

2,820

2,780

2,700

2,660

2,640

2,630

2,640

2,980

3,270

3,040

2,858

2,760

2,700

2,890

3,350

3,580

91,850

5,062

0.320

0.36

182,200

Calendar year 1955: Max 94,800 Min 2,400 Mean 

Water year 1955-56: Max 112,000 Min 2,630 Mean

16,190 Cfsm 1.69 

20,460 Cfsm 2.14

In. 22.98 Ac-ft 11,720,000 

In. 29.10 Ac-ft 14,850,000

Peak discharge (base. 50.000 cfs). Dec. 23 (l a.m.) 86,200 cfs (16.13 ft): Apr. 23 (10 to 11 ajn.) 

91,700 cfs (16.61 ft); May 11 (8 aim.) 78,500 cfs (l5.41 ft); May 24 (7 p.m.) 121,000 cfs (19.60 ft).

* Discharge measurement made on this day.

* Expressed in thousands.

Note..--Stage-discharge relation affected by ice Nov. 15-26, Dec. 17-21, Jan. 31 to Feb. 25, 

Mar. 2-4.
SNAKE RIVER MAIN STEM

Snake River near Clarkston, Wash.

Location,--Lat 46°25'30", long 117°10'30", in lot 1, sec. 16, T. 11 N. , R. 45 E. , on 

right bank 2 miles upstream from Alpowa Creek, 7 miles downstream from Clarkston, and 

134 miles upstream from mouth.

Drainage area. 103,200 sq mi, approximately.

Records available.--October 1915 to September 1956 in reports of Geological Survey. Monthly 

discharge only for some periods, published in WSP 1317. October 1909 to September 1953 

(monthly discharge only) in State Water-Supply Bulletin 6. Prior to October 1935, published as "at Riparia". Gage-height records collected at Riparia, 1900-1916 (fragmentary) , 1935-48, are contained in reports of U. S. Weather Bureau.

Gage.--Water-stage recorder. Datum of gage is 670 ft above mean sea level (Corps of Engineers benchmark). Prior to Sept. 12, 1917, staff gage, and Sept. 12, 1917, to Sept. 30, 

1922, Aug. 6, 1928, to Sept. 30, 1935, chain gage, at Riparia 66 miles downstream at 

different datum.

Extremes.--Maximum discharge during year, 292,100 cfs May 24 (gage height, 36.30 ft); minimum, 18,300 cfs Oct. 27; minimum gage height, 10.44 ft Aug. 22; minimum daily discharge, 

20,400 cfs Oct. 5.

1909-56: Maximum discharge, 369,000 cfs May 29, 1948 (gage height, 40.36 ft, from 

high-water mark in well); minimum observed, 10,600 cfs Aug. 14, 18, 20, 24-28, 30, 31, 

Sept. 1, 2, 5, 1931, but may have been less during period of ice effect in January 1937.

Maximum stage known, 24.7 ft, Riparia site and datum, June 5, 1894,' determined from 

floodmarks by U. S. Weather Bureau (discharge, 409,000 cfs).

Revisions.--Figures of observed maximum discharge for the water years 1931 and 1934 

have been revised to momentary maximum discharge of 116,000 cfs Apr 1, 1931 (gage 

height, 10.30 ft, from graph based on gage readings) and 164,000 cfs Dec. 23, 1933 

(gage height, 13.20 ft, from graph based on gage readings), superseding figures published in WSP 723 and 768, respectively, and WSP 1317.

Remarks.--Records excellent. Over 2,840,000 acres are irrigated above station from numerous large irrigation projects. Regulation from many storage reservoirs upstream and 

fluctuations during low-water periods from powerplant on Clearwater River at Lewiston, 

Idaho. Records of chemical analyses and water temperatures for the water year 1956 

are given in WSP 1453.

Revisions (water years).--WSP 463: 1916. WSP 933: 1937.

Rating tables, water year 1955-56 (gage height, in feet, ajad discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

11.0

15.0

20,000

39,200

20.0

24.0

76,400

118,400

11.0 20,600

15.0 39,200

20.0 76,400

25.0 128,000

30.0 194,000

36.0 287,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

22,000

21,500

21,500

20,700

2O. 400

23,200

23,100

21., 900

21,800

23,300

27 , 500

27,600

26,500

26,400

26,100

26,600

27,300

23,600

21,800

21,700

22,700

21,700

22,100

23,600

23,000

21,700

21,200

22,700

23,300

26,400

' 

732,800

23,640

$1,453

Nov.

28,700

*25,600

24,800

24,400

26,000

30,700

29,000

28,300

26,200

27,100

38,700

35,100

31,200

27,700

25, 500

22,100

21.500

24,000

25,400

28,300

32,000

33,500

32,600

31,400

31.4OO

34 , 000

40,400

36,500

33,8OO

30, 900

886,800

29,560

$1,759

Dec.

30,600

31,800

32,400

31,200

29,000

27,300

*26,100

25,800

26,100

26,700

26,900

35,000

41,400

34,900

30 , 600

29,600

29,500

29,400

29,800

30, 600

45,200

116,400

169,000

145,900

119,800

93,300

81,700

72,200

64,000

54,800

50,400

tl, 617.4

52, 170

$3,208

Jan.

48,800

48,100

45,300

41,100

40. 100

42,200

42,200

42,500

41, 100

36,500

34,400

36,100

36,900

34,400

34,400

51,000

64, 100

60, 600

*55,700

53, 300

50,600

48,900

47,800

50, 300

47,500

44,800

41,200

40,200

40,500

39,400

37,000

$1,377

44,420

$2,751

Feb.

31,400

50,000

30,500

32,500

34,000

34 , 000

34 , 200

30,800

30,800

30,800

31,400

34, 600

37,200

36,500

37,400

34,400

32,300

33,000

34,200

35,000

35,700

35,700

42,400

45,700

46,500

40,800

39,600

37,400

36,400

------

$1,025

35,340

$2,055

Mar.

39,100

43,200

50,200

51 , 900

50 , 500

47,900

44,800

42,100

42,300

42,000

41,900

41,000

40,500

39,700

58,900

39,700

41,300

43,600

50,200

57 , 600

61,900

80,100

90,200

103,500

115,900

134,200

124,400

108,500

98, 600

93,100

94,400

$1,993.2

64 , 300

$3,953

Apr,

91,500

86,800

84,200

*83, 000

83, 100

79,300

77,600

76,700

75,200

79,600

93 , 000

106,900

115,600

123,800

131,800

143,900

150,800

141,700

*136, 500

144,300

161,700

179,300

192,200

191,500

177,900

165,000

157,200

149,600

139,600

129,800

$3,749.1

125,000

$7,456

May

124,200

117,900

115,700

114,800

127,000

131,000

135, 100

148,400

165,200

17?, 000

177,600

164,200

150,100

136,400

128,100

129,200

141,300

164,800

197,100

232,600

253,500

261,700

260,100

271,200

277,100

252,900

255,000

254,200

*245,500

238,300

239 400

$5,781.6

186,500

$11,470

June

258,000

261,700

250,000

235,000

222,800

199,500

183,900

168,800

163,400

171,500

175,400

168,300

157,000

143,100

135,700

145,600

142,700

128,500

118,500

117,400

*L14, 000

107,300

102,200

100,900

100,100

92,400

85,100

80, 500

77,200

75,100

$4,480.1

149,300

$8,886

July

67,000

62,700

61,800

65,500

58,200

54 , 000

51,600

49,800

48,600

47,800

46,200

47,500

44,900

44,400

45,300

40,200

38,400

36,700

35,200

34,200

33,200

52,800

32,200

31,200

30,400

29,900

29,400

28,800

28,800

29,000

28.700

$1,312.2

42,330

$2,603

Aug.

28.500

27,700

27,400

27,700

27,400

26,900

*26,200

26, 300

26,100

25,500

25,100

25,200

25,000

24,200

23,800

23,800

24,000

24,100

24 , 100

23,000

22,400

21,400

21,500

22,000

23,000

23,600

23,800

25,800

27,800

26,600

26,700

776,200

25,040

$1,540

Sept.

26.500

24, 900

24,600

25,700

23,300

23,400

23,000

22,700

22,700

23,100

22,900

21,800

22, 600

22,400

22,800

23,700

25,600

23,000

22,400

*22,300

22,400

22,800

23,400

23,800

23,500

22,600

E2, 500

23,600

24,000

24,700

698,500

23,280

$1,385

Calendar year 1955; Max 199,000 Mln 17,500 Mean 45,490 Ac-ft 32,930,000

Water year 1955-56: Max 277,100 Min 20,400 .Mean 66,750 Ac-ft 48,460,000

* Discharge measurement made on this day. 

$ Expressed in thousands.
PALOUSE RIVER BASIN 249

Palouse River near Coifax, Wash.

Location. Lat 46°55'30", long 117"19'10", in NW£sw£ sec. 31, T. 17 N., R. 44 E. , on

right bank 3^ miles northeast of Coifax and 4 miles upstream from mouth of South Pork.

Drainage area. 491 sq mi.

Records available. September 1955 to September 1956.

gage. Water-stage recorder. Altitude of gage is 2,010 ft (from topographic map).

Extremes. 1955: Maximum discharge during period in September, 32 cfs Sept. 23 (gage 

height, 1.77 ft); minimum observed, 3.0 cfs Sept. 13 (gage height, 1.30 ft).

1955-56: Maximum discharge during water year, 4,790 cfs Dec. 22 (gage height, 

7.60 ft), from slope-area determination of peak flow; minimum, 7.0 cfs Aug. 21 (gage 

height, 1.43 ft).

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

record, which are poor. Small diversions for irrigation and domestic use above station. Slight regulation by millponds above station.

Rating table, period Sept. 13, 1955, to Sept. 30, 1956, except periods of Ice 

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

1.3 3.0

1.4 5.8

1.5 10.5

1.7 

1.9 

2.2

49

108

2.7 

3.3

4.0

234

450

840

5.0 

6.0 

7.0

1,640

2,660

3,910

Discharge, In cubic feet per second, 1955

Day

1

2

3

4

5

Sept.

_

-

-

_

-

Day

6

7

8

9

10

Sept.

_

-

-

_

-

Total

Day

11

12

13

14

15

Sept.

_

-

3.0

_

-

Day

16

17

18

19

20

Sept.

_

-

-

9.9

 13.5

Day

21

22

23

24

25

Sept.

.

15.5

19

15.5

17

Day

26

27

28

29

30

Runoff In acre-feet. ................................................

» Discharge measurement made on this day.

Sept.

12.5

18.5

15.5

14

16.5

_

_

-

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

TotaJ

Mean

Ac-ft

Oct.

15

13

15

14

17.5

17

15

15.5

44

74

217

243

141

97

66

66 

37 

34

31

32

29

26

28

26

22

23

22

23

28

38

74

1,543.0

49.8

3,060

Nov.

*126

93

74

68

66

124

148

117

106

162

148

190

141

66

30

1 

55

196

268

298

319

259

231

308

522

£93

394

228

178

5,666

189

11,240

Dec.

175

158

*143

117

90

70

80

72

61

03.

126

974

612

374

300

260 

220 

200

220

300

1,180

*3,810

5.880

2,500

1,320

1,290

1,280

1,040

681

472

398

22,462

725

44,550

Jan.

386

355

390

812

d731

d634

d618

d550

d468

d459

d482

d442

d508

d464

d473

dl,570 

»d2,110 

17410

1,000

*896

847

982

1,100

926

712

513

446

400

340

280

250

21,554

695

42,750

Feb.

230

220

220

230

240

250

260

260

260

280

310

360

470

340

260

230 

220 

230

250

400

740

535

450

350

250

246

228

234

426

8,994

310

17,840

Mar.

687

1,450

1,330

777

508

410

363

352

344

302

237

243

*256

234

259

316 

518 

1,060

dl,450

*dl,800

dl,860

*d3,400

*d3,040

2,570

2,480

5.490

3,100

2,050

1,610

*1,580

1,780

59,856

1,286

79,050

Apr.

1,610

1,560

*dl,170

1,090

1,170

1,120

990

1,010

950

1,050

1,590

1,790

1,950

2,000

2,160

2.280

2,150 

*1,710

1,430

1,440

1,620

1,790

1,880

1,620

1.31O

1,040

889

812

724

625

42,128

1,404

83,560

May

545

477

446

459

590

596

540

1,210

2.040

1,750

1,430

1,210

966

750

601

518 

477 

472

459

438

*406

366

522

298

326

278

256

240

228

206

 i°-5-

19,065

616

57,850

June

175

151

129

145

160

178

155

141

151

115

110

95

90

90

108

240 

59S 

255

220

196

185

165

148

s 151

124

110

101

101

95

!§

4,496

150

8,920

July

*43- 82

61

38

39

61

52

54

47

46

40

44

54

55

54

27 

31 

26

17

17

22

22

21

20

17.5

18.5

16.5

16.5

15.5

15.5

15

1,026.0

35.1

2,040

Aug.

14

14

11.5

9.9

13

*13.5

14

15.5

14

12.5

11

9.9

11

12.5

B.4

9.4 

8.4 

9.9

10.5

9.4

7.4

8.9

8.4

8.4

7.9

15

16.5

17.5

57

-n-r 40

24

425.5

13.7

840

Sept.

19

22

17

15.5

15.5

13

13

15

15

11

11

11

12.5

11.5

9.9

10.5 

*9.9 

15.5

9.4

8.4

10.5

9.9

10.5

9.9

11.5

9.4

9.4

10.5

10.5

13

366.7

12.2

727

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 3,880 Mln 7.4 Mean 458 Ac-ft 332,400

Peak discharge (base. 2.000 efs). Dec. 12 (8:30 p.m. 

4,790 cfs(7.60 ft); Jan. 16 (9 p.m.) 2,520 cfs (5.87 ft); Mar. 2 (8 p.m.) 2.190 cfs (5.57 ft)

2,090 cfs (5.47 ft); Dec. 22 (l a.m.)

, . . .. , . ; . .. . . : 

Mar. 22 (time unknown) about -3, 500 cfs: Mar. 26 (3 a.m.) 5.800 cfs (6.92 ft); Apr. 16 (9 a.m.) 

2,300 cfs (5.67 ft); May 8 (11:50 p.m.) 2,380 cfs (5.75 ft).

» Discharge measurement made on this day.

d Doubtful gage-height record; discharge estimated on basis of recorder graph, weather records, 

and records for stations on nearby streams.

Note . Stage -discharge relation affected by Ice Nov. 15-18, Dec. 16-18, Jan. 28 to Feb. 10, 

Feb. 15-18. No gage-height record Dec. 15-20, Feb. 6-25.

467239 O-58 17
250 PALOUSE RIVER BASIN

Union Flat Creek near CoIfax, Wash.

Location.--Lat 46°49'00", long 117°26'05", in SW^SW^ sec. 5, T. 15 N., R. 43 E., on right 

bank 5^ miles southwest of CoIfax.

Drainage area. 189 sq mi.

Records available. July 1953 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,865 ft (from topographic map).

Extremes. Maximum discharge during year, 1..790 cfs Dec. 21 (gage height, 7.10 ft), from 

rating curve extended above 730 cfs by logarithmic plotting; minimum not determined; 

minimum daily, 0.5 cfs Oct. 1-5.

1953-56: Maximum discharge, that of Dec. 21, 1955; no flow Aug. 15 to Sept 13, 1955.

Remarks.--Records fair. Small diversions above station for irrigation. No known regulation.

Rating tables, water year 1955-56, except periods of lee effect 

and discharge In cubic feet per second) 

(Shifting-control method used Sept. 8-38)

height, In feet,

Oct. 1 to Dec. 21 Dec. 21 to Sept. 30

0.8 

.9

1.0

1.1

0.2 

0.6 

1.3 

2.5

1.4 

1.7 

2.0

3.0 

4.0 

5.0 

6.0

157

352

631

990

1.0

1.2 

1.4

1.1 

2.1 

3.4 

7.5

2.5 

3.0 

3.5

100

175

275

4.0 

5.0 

6.0 

7.0

410

750

1,200

1,730

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.5

.5

.5

.5

.5

.7

1.0

2.5

7.8

9.4

6.8

5.0

4.7

3.1

2.5

2.0

1.9

1.8

1.9

2.0

2.2

1.9

1.8

1.9

1.9

1.9

1.9

2.2

3.0

4.7

4.0

83.0

2.68

165

Nov.

*3.8

4.4

4.7

5.2

5.5

7.4

6.8

6.3

5.2

32

15.5

4.7

3.8

3.0

2.5

3.0

3.5 

5.0

40

39

23

17.5

14.5

15

49

175

163

67

55

48

828.3

27.6

1,640

Dec.

45

40

34

30

21

*30

23

18.5

26

23

66

456

184

54

35

32

29 

32

51

69

737

1,060

504

122

85

116

199

84

54

41

50

4,350.5

140

8,630

Jan.

44

48

53

144

124

76

76

79

46

56

62

71

104

99

94

1,000

782 

*306

172

153

144

186

323

161

100

75

56

45

40

35

30

4,784

154

9,490

Feb.

30

25

25

25

30

35

35

35

40

50

61

282

276

134

61

38

30 

35

40

46

92

158

100

90

76

70

68

82

120

2,189

75.5

4,340

Mar.

311

1,180

1,000

323

188

142

121

175

212

124

105

*96

92

86

104

177

518 

691

990

*975

858

1.330

786

549

528

850

365

*280

293

286

14,082

454

27,930

Apr.

195

179

£j.50

139

114

98

105

108

90

84

75

63

58

55

49

46

45 

*44

41

37

34

31

29

29

30

28

28

27

25

25

2,061

68.7

4,090

May

24

22

24

36

79

47

39

132

199

124

121

65

56

48

41

36

33 

28

25

25

*22

20

17

16

17

16

15

13.5

12.5

12

11.5

1,376.5

44.4

2,730

June

11

10.5

10

9.6

13

15

14.5

14

13

12

11

10

9.0

9.4

11.5

20

f

20

16.5

15

13.5

12

11

9.7

9.1

8.5

7.7

6.8

381.6

12.7

757

July

6.1

*5,9

7.5

TTo

7.2

7.0

6.3

6.1

5.4

4.8

4.6

4.4

4.2

4.0

3.8

3.8

3.6 

3.4

3.1

2.8

3.1

3.1

2.8

2.3

2.2

1.8

1.7

1.6

1.5

TT5

1.5

124.1

4.00

246

Aug.

1.5

1.7

1.9

2.3

2.2

 1.9

1.7

1.6

1.4

1.5

1.4

1.5

1.7

1.7

2.2

2.1

1.9 

1.6

1.9

1.8

1.8

1.6

1.8

1.5

1.6

3.0

4.2

4.0

3.7

3.6

2.7

64.8

2.09

129

Sept.

2.6

2.1

1.8

1.7

1.6

1.6

1.6

1.5

1.4

1.4

1.3

1.3

1.3

1.3

1.2

1.1

i!i 1.1 1.1

1.1 1.1 1.1

1.3

1.3

1.3

1.6

1.8

2.1

2.6

44.5

1.48

88

Calendar year 1955: Max 1,060 Mln 0 Mean 42.1 Ac-ft 30,480

Water year 1955-56: Max 1,330 Mln 0.5 Mean 83.0 Ac-ft 60,240

Peak discharge (base. 400 cfs). Dee. 12 (8 p.m.) 586 cfa (4.85 ft); Dec. 21 (10 p.m.) 1,790 cfs 

7.10 ft); Jan. 16 (3:30 p.m.) 1,420 cfs (6.43 ft); Feb. 12 (8:45 p'.m.) 1,460 cfs (6.52 ft); Feb. 22 

2 p.m.) 479 cfa (4.23 ft): Mar. 3 (5.-30 a.m.) 1,680 cfs (6.92 ft); Mar. 8 (11 p.m.) 455 cfs 

4.15 ft); Mar. 22 (1 p.m.) 1,53O cfs (6.66 ft); May 8(10:30 p.m.) 458 cfs (4.16 ft). 

* Discharge measurement made on this day.

Note. No gage-height record Oct. 1-8, May 21 to June 21; discharge estimated on basis of weather 

records and records for stations on nearby streams. Stage-discharge relation affected by Ice 

Nov. 14-17, Jan. 28 to Feb. 10, Feb. 17-19.
PALOUSE RIVER BASIN 251

Palouse River at Hooper, Wash.

Location. Lat 46°45'30", long 118°08'50", in SE£ sec. 27, T. 15 N., R. 37 E., on left 

bank 150 ft downstream from State Highway 11B bridge at Hooper and 0.4 mile upstream 

from Cow Creek.

Drainage area. 2,540 sq mi, approximately.

Records available.--April to August 1897 (gage heights only), September 1897 to December 

1899, April 1900 to April 1907, June 1908 to July 1912, March 1913 to March 1916, 

February 1951 to September 1956. Prior to 1904, sometimes published as "near Hooper".

Gage.--Water-stage recorder. Altitude of gage is 1,040 ft (from topographic map). 

A"pr. 1 to Aug. 31, 1897, staff gage at site 2| miles upstream at different datum. 

Sept. 9, 1897, to March 1916, various staff gages at site 1? miles upstream from 

present site at different datums. Feb. 8 to Mar. 28, 1951, staff gage at present site 

and datum.

Average discharge.--18 years (1897-99, 1900-1906, 1908-11, 1913-15, 1951-56), 622 cfs 

(450,300 acre-ft per year).

Extremes. Maximum discharge during year, 15,200 cfs Dec. 22 (gage height, 14.01 ft); 

minimum, 22 cfs Aug. 26 (gage height, 3.45 ft).

1897-1916, 1951-56: Maximum discharge, 29,800 cfs Mar. 2, 1910 (gage height, 

22.00 ft, from graph based on gage readings, site and datum then in use); no flow for 

part of June 25, 1910.

Correction. The date of the maximum discharge for water year 1906 was erroneously 

published in WSP 1317 as Mar. 21, 1906, instead of Feb. 21, 1906.

Remarks. Records good except those for periods of ice effect, which are poor. No regulation. Diversions above station for irrigation, domestic and municipal use.

Revisions (water years). WSP 1217: Drainage area. WSP 1287: 1897-1904, 1910(M) , 

1915-16(M).Revised monthly and yearly figures, in cubic feet per second, for water 

year 1910, superseding those published in WSP 292 and 1317 are given herewith:

Month

Water year 1909-10 ..... 

Calendar year 1910 .....

Maximum

27,800 

27,800

Minimum

0 

0

Mean

1,050 

1,040

Runoff In 

acre-feet

762,000 

752,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

43

59" 38

40

42

43

43

48

62

84

120

159

304

214

164

131

114

112

96

92

79

84

82

79

76

82

75

75

79

84

88

2,871

92.6

5,690

Nov.

96

149

168

149

*155

131

135

208

190

176

184

217

b!70

b!20

b90

b75

b73

75

120

245

319

322

299

290

341

779

1,820

1,540

1,040

820

10,474

349

20,770

Dec.

718

746

640

562

*458

373

364

370

408

370

387

2,750

4,170

1,980

1,130

86B

718

610

504

605

2,390

12,400

8,730

5,860

3,580

2,600

3,360

2,700

2,050

1,530

1,200

65,131

2,101

129,200

Jan.

1,050

968

1,080

4,900

3,410

2,410

2,060

1,980

1,660

1,400

1,440

1,540

1,480

1,720

1,410

2,430

6,170

3,880

2,840

*2,260

2,340

2,44O

2,950

3,000

2,300

1,880

1,490

1,260

bl,100

b900

b750

66,498

2,145

131,900

Feb.

b650

b60O

b620

b700

922

958

946

862

790

762

784

1,140

1,790

1,390

b840

b600

b550

b450

b550

645

2,880

5,450

2,000

1,530

1,220

1,370

1,210

1,300

2,750

34,259

1,181

67,950

Mar.

2,650

5,500

6,340

3,840

2,790

2,090

1,840

1,660

1,860

1,620

1,370

1,180

1,180

1,140

1.150

1,280

*1,860

3,250

4,700

5,080

4,810

6,160

»6,850

5,580

4,870

6,040

6,400

4,810

3,660

3,220

3,400

108,140

3,488

214,500

Apr.

5.280

2756o

2,430

2,180

2,060

2,050

1,870

1,830

1,790

1,680

1,780

2,120

2,420

2,500

2,560

2,680

2,740

2,500

2,040

1,830

1,860

2,020

2,150

2,150

1,860

1,57(7

1,360

1,230

1,140

1,060

61,540

2,051

122,100

May

970

874

790

762

826

1,070

952

934

2,810

2,480

2,110

1,770

1,460

1,280

1,080

958

844

790

762

735

686

630

571

517

486

*504

490

446

426

408

384

29,805

961

59,120

June

354

558

322

299

295

293

310

304

284

279

258

238

224

212

210

217

316

553

445

364

325

304

276

250

230

210

197

186

182

178

8,449

282

16,760

July

178

174

*160

123

128

119

108

122

120

119

120

116

105

101

95

84

76

76

70

73

74

69

64

64

67

60

54

49

49

48

44

2,909

93.8

5,770

Aug.

44

48

54

5T

47

43

38

34

35

*53

54

35

38

55

51

29

29

28

27

29

30

27

27

27

25

23

ZB

38

38

42

50

1,097

35.4

2,180

Sept.

62.

62

52

44

42

43

40

39

38

36

37

36

53

31

31

32

31

*36

33

31

34

38

55

52

34

33

35

57

59

41

1,147

58.2

2,280

Calendar year 1955 ; Max 12,4OO Mln 6.3 Mean 623 Ac-ft 451,000

Water year 1955-56 ; Max 12,400 Mln 23 Mean 1,072 Ac-ft 778,200

May 9 (12:30 p.m.) 3*880 cfs (9.49 ft.

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

(11.29 ft); 

'1:30 p.m.) 

(11.77 ft);
252 PALOUSE RIVER BASIN

Williams Lake near Amber, Wash.-

Location. Lat 47°19'25" long 117 0 41'55", in NE£SE£ sec. 12, T. 21 N., R. 40 E., on the 

west shore at Bunker's Resort, 2 miles southeast of Amber.

Records available . September 1955 to September 1956.

Gage. Staff gage read once daily at various times. Altitude of gage is 2,050 ft (from 

topographic map).

Extremes. 1955: Maximum gage height observed during September, 1.12 ft Sept. 1; minimum observed, 0.86 ft Sept. 24, 26.

1955-56: Maximum gage height observed, 4.89 ft Apr. 5-7; minimum observed, 0.81 ft 

Oct. 4, 7.

Remarks. Small diversions for irrigation above station. Minor regulation by fish screens 

at outlet.

Gage height, in feet, 1955

Day

1 

2 

3 

4 

5

Sept.

1.12 

1.10

1.08 

1.07

Day

6 

7 

8 

9 

10

Sept.

1.06

1.04 

1.02

Day

11 

12 

13 

14 

15

Sept.

1.00 

.98 

.95

.93

Day

16 

17 

IS 

19 

20

Sept.

0.92

.91 

.91

Day

21 

22 

23 

24 

25

Sept.

0.87 

.86

Day

26 

27 

28 

29 

30

Sept.

0.86

.87 

.87

Gage height, in feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

oot.

0.84

.82

-

.81

-

.82

.81

-

.93

.94

_

.94

_

.94

.94

.94

.94

.94

-

.94

_

.93

.92

-

.94

.94

.94

.94

.94

.94

.94

Nov.

-

0.95

.95

-

.96

.96

.96

-

.96

.95

-

.95

.94

-

.94

-

.94

.96

.96

-

.98

.99

-

1.00

-

1.00

1.04

1.06

1.07

_

Dec.

1.10

-

1.13

1.14

1.15

_

1.16

-

-

1.16

1.26

1.30

1.30

1.30

1.30

_

1.30

_

1.38

1.40

1.42

1.54

_

1.62

1.66

-

1.70

-

1.76

_

1.78

Jan.

1.78

1.80

1.84

2.02

2.08

2.08

-

2.10

-

-

2.20

_

2.28

2.30

2.30

2.42

-

2.50

2.52

2.56

2.60

2.70

2.76

2.84

-

-

3.10

3.16

_

-

Feb.

3.20

3.26

3.30

3.34

3.40

3.46

3.52

-

3.54

3.56

3.58

3.60

3.62

3.62

3.62

_

3.64

3.66

3.70

3.74

3.80

3.85

3.86

3.84

3.84

-

3.82

_

Mar.

3.90

4.03

4.10

4.10

4.15

-

4.14

4.14

-

4.16

4.18

4.16

4.16

4.16

4.16

4.18

4.18

4.20

4.20

4.21

4.24

-

4.30

4.36

4.44

4.55

4.60

4.66

_

4.78

Apr.

4.84

4.88

4.88

4.88

4.89

4.89

4.89

4.88

4.86

4.82

4.80

4.78

4.74

4.70

-

4.62

4.59

4.56

4.50

4.50

_

-

4.46

4.38

4.30

4.26

_

_

4.18

May

4.16

4.12

-

4.08

4.08

4.06

-

4.08

4.10

4.16

_

4.24

4.20

4.16

4.10

4.04

4.00

_

3.90

-

3.80

3.78

3.74

-

3.70

3.64

3.60

-

3.54

3.54

June

3.54

3.54

3.56

3.58

3.54

-

3.50

-

3.40

-

3.30

-

3.24

3.20

3.20

3.20

3.16

3.14

3.10

-

-

3.04

3.00

-

2.96

2.94

-

-

2.90

2.89

July

2.84

2.83

2.80

2.80

-

2.80

2.80

2.79

-

2.79

2.78

2.78

2.78

_

2.74

2.74

2.70

2.70

2.70

2.70

2.70

2.68

2.66

2.66

-

2.64

2.59

2.58

-

2.54

Aug.

2.50

2.50

2.50

2.50

2.49

-

2.48

2.47

2.46

2.45

2.42

2.40

-

2.39

2.38

2.36

2.34

-

2.31 "

2.29

2.29

2.28

-

2.28

2.28

-

2.26

-

2.26

2.26

Sept.

2.24

2.20

-

2.18 "

2.16

2.14

2.10

2.19

-

-

2.18

2.16

-

-

_

2.03

-

2.01

1.98

_

1.98

1.97

1.96

-

1.96

1.95

_

1.93

_
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 253

Measurements of streamflow in the Snake River basin made at points other than regular 

gaging stations are given in the following table. Most of these measurements were made 

during periods of base flow when streamflow is primarily from ground-water storage. Measurements believed to have been made under base-flow conditions are identified by an asterisk (*) to the left of the discharge figure. These measurements when correlated with the 

simultaneous discharge of a nearby stream where continuous records are available will give 

a picture of the low-flow potentiality of stream. The column headed,'Measured previously" 

shows the water years in which measurements were made at the same, or practically the same, 

site.

Determinations of peak flow at points other than regular gaging stations are given in 

a separate table on page 256.

Discharge measurements made at points other than gaging stations in the 

during the water year 1956

Snake River basin

Stream

Teton River. .

Teton Creek. .

Horseshoe

Creek.

Tributary to

Henrys Pork . .

Teton River. .

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

Location

On line between sees. 19 and 3O,

T. 3 N., R. 46 E., 100 ft downstream from Moose Creek, 200 ft

upstream from String Canal, and

3i miles southeast of Victor.

lj miles upstream from Mill Creek,

1.6 miles west of Boy Scout

camp, 4.2 miles east of WyomingIdaho State line, and 7j miles

northeast of Driggs .

In sec. 27, T. 5 N., R. 44 E.,

90 ft upstream from bridge on

old railroad grade, 4 miles upstream from mouth, and 7j miles

west of Driggs.

Drainage 

. area (sq ml)

47.6

33.8

11.7

Measured 

previously 

(water 

years)

1-1946-55

t!946-55

1-1946-52,

1954-55

Date

June 20

July 13

Aug. 1

14

Aug. 7

June 14

July 17

Discharge 

(cfs)

266

180

*130

*101

*79.2

29.8

*11.5

Bannock Creek basin, Idaho

Rattlesnake

Creek.

Bannock Creek NEij sec. 26, T. 8 S., R. 33 E.,

2 miles above mouth and 12 miles

s e co.

a77 1955 Oct. 8

Nov. 9 

Dec. 16

Jan. 15

Feb. 26

Apr. 9

28

May 23

June 18

July 18

Aug. 27

2.93

*3.41 

*5.04

11.6

*8.14

15.1

20.6

7.14

4.09

2.94

2.79

Rock Creek basin, Idaho

East Pork

Rock Creek.

Rock Creek. . . SEj sec. 4, T. 10 S., R. 31 E.,

3^ miles above mouth and

2£ miles east of Rockland.

21.2 19E5 Oct. 8

Nov. 9

Dec. 16

Jan. 15

Feb. 27

Apr. 1O

28

May 23

June 18

July 17

Aug. 27

4.90

*12.3

*13.0

17.7

*12.4

9.18

3.66

8.07

7.82

8.81

10.1

Tributaries between Snake River at Milner and Rock Creek, Idaho

Devils Washbowl

Springs .

Devils Corral

Spring

(upper

outlet) .

Devils Corral

Spring

(lower

outlet) .

Unnamed

spring.

Do ........

Do. .......

Blue Lakes

Outlet.

Snake River. .

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

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

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

do

... .do, ......

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

NE£NE£ sec. 4, T. 10 s., R. is E.,

% mile above Twin Palls of Snake

River and plant of Idaho Power

Co. and 3j miles north of

Kimberly .

NEi-SEi sec. 32, T. 9 S., R. 18 E.,

on north side of Snake River,

100 ft above point where spring

cascades down to river.

SEiNWj sec. 32, T. 9 S., R. 18 E.,

on north side of Snake River,

1/8 mile above mouth of creek.

Near center of sec. 31, T. 9 S.,

R. 18 E., on north bank of Snake

River, 5 mile above Shoshone

powerplant . 

Outlet to river in NW^-SWi sec. 31,

T. 9 S., R. 18 E., on north bank

of Snake River just above Shoshone Falls, on D. T. Heter's

property.

SWj-NWt sec. 34, T. 93., R. 17 E.,

on north side of Snake River,

200 yards below Rim to RLm

Bridge and 2 miles north of

Twin Palls.

SW£SW£ sec. 28, T. 9 S., R. 17 E.,

at point of entry to Snake

River, 4 miles north of Twin

Palls.

_

-

_

_

1902,1917,

1923-24,

1950-55

1902,

1923-24,

1939,

1950-55

1902,1923,

1950-55

1950-55

1950-55

1950-55

1902,

1913-14,

1917-47,

1950-55

Apr. 2

Apr. 2

Apr. 3

Apr. 3

Apr. 3

Apr. 3

Apr. 3

*23.1

*44.2

*7.77

*1.68

*5.29

*.82

*b305

t Gaging station operated 1946-52.

a Approximately.

b Discharge represents actual net spring flow adjusted for diversions and surface flow.
254 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements made at points other than gaging stations in the Snake River basin 

during the water year 1956 Continued

Tributaries between Snake River at Mllner and Rook Creek, Idaho Continued

Stream

Sunnybrook

Spring.

Trail Springs

(upper

outlet) .

Crystal

Springs .

Niagara

Springs .

Clear Lakes

Outlet .

Briggs Creek.

Banbury

Springs .

Unnamed

spring.

Blind Canyon

Spring .

Box Canyon

Springs .

Tributary to

Snake River. .

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

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

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

do

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

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

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

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

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

Location

SEjSEi sec. 19, T. 9 S., R. 17 E.,

3/6 mile above point of entry to

river.

SWjSWi sec. 14, T. 9 S., R. 16 E.,

1 mile below Rock Creek and

6 miles northwest of Twin Falls.

Sec. 12, T. 9 S., R. 15 E.,

65 miles above Devils Washboard

Falls in Snake River and 7 miles

northeast of Buhl .

EiNEi sec. 10, T. 9 S., R. 15 E.,

4j miles above Devils Washboard

Falls in Snake River and 6 miles

northeast of Buhl.

SWiSEj- sec. 2, T. 9 S., R. 14 E.,

at Clear Lakes plant of Idaho

Power Co., 4,5 miles north of

Buhl.

NWiSE-J sec. 4, T. 9 S., R. 14 E.,

Z miles below Clear Lakes Outlet and 5j miles northwest of

Buhl.

SEjNWjj sec. 33, T. 8 S., R. 14 E.,

at footbridge over outlet to

Snake River, 7 miles northwest

of Buhl.

SE&SWi sec. 28, T. 8 S., R. 14 E.,

on east side Snake River,

0.35 mile above Blind Canyon

Spring and 7 miles northwest of

Buhl.

NE^SWi sec. 28, T. 8 S., R. 14 E.,

Just upstream from Box Canyon

and 7j miles northwest of Buhl.

NW£ sec. 28, T. 8 S., R. 14 E., at

point of entry to Snake River

and 7j miles southwest of

Wendell.

Drainage 

. area, (sq ml)

-

-

-

_

_

_

_

_

Measured 

previously (wateryears)

1950-55

1917,

1950-55

1902,

1917,1919,

1924-25,

1931,

1950-55

1902,

1917-20,

1924,1931,

1950-55

1902,

1913-14,

1917,1920,

1924,

1926-27,

1937,

1950-55

1902,1913,

1917-20,

1924-25,

1931,

1950-55

1902,1913,

1917,

1919-20,

1924-25,

1950-55

1950-55

1902,1917,

1919,

1950-55

Date

Apr. 3

Apr. 10

Apr. 5

Apr. 4

A r ' 5

Apr. 6

Apr. 6

Apr. 6

Apr. 6

Apr. 6

Discharge 

(cfs)

*15.1

*2.79

*548

*b294

*b5E7

*blll

*bll8

*5.10

*b!2.7

852

Falls Creek basin, Idaho

Salmon Falls

Creek.

Snake River. . NW£ sec. 6, T. 14 S., R. 15 E.,

2 miles below dam of Salmon

River Canal Co. and 8 miles

northwest of Rogerson.

_ 1912,1946,

1953-55

Oct. 3

Dec. 19

Apr. 5

June 14

Aug. 23

5.54

5.82

7.48

14.8

9.10

Tributaries between Salmon Falls Creek and Malad River, Idaho

Sand Springs

Creek.

Thousand

Springs .

Riley Creek..

Billingsly

Creek.

Snake River . .

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

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

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

SE£ sec. 17, T. 8 S., R. 14 E.,

100 ft upstream from Hy

Berkowitz1 house and 7 miles

southeast of Hagerman.

Springs enter Snake River between

mile 154.05 on river profile

near line between sees. 17

and 20, T. 8 S., R. 14 E., and

mile 151.15 on river profile

about 200 ft upstream from line

between sec. 1, T. 8 S., R.

13 E., and sec. 6, T. 8 S.,

R. 14 E.

SW^NEj sec. 6, T. 83., R. 14 E.,

at Hagerman Hatchery of U. S.

Fish and Wildlife Service,

100 yds below mouth of Lewis

Creek, 100 ft below small unnamed spring entering from righl^

and 5 miles southeast of Hagerman. 

Near line between sees. 31 and 32,

T. 7 S., R. 14 E. (spring heads

in SWi;NW£ sec. 32), at E . W.

Bean Farm, 1/8 mile below head

of creek and 3f miles southeast

of Hagerman.

_

_

_

-

19C2,

1912-13,

1917-21,

1924-25,

1931,

1954-55

1920,

1950-55

1950-55

1950-55

Apr. 10

Aug. 21

Apr. 9

Aug. 20

Apr . 10

Apr. 10

*b95.5

*bl!4

«cl,330

*cl,190

*70.4

*b48.8

* Base flow.

b- Discharge represents actual net spring flow adjusted for diversions and surface flow, 

c Discharge obtained by measuring Snake River above and below spring outlets and adjusting for 

surface flow.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements made at points other than gaging stations in the Snake River basin 

during the water year 1956 Continued

Tributaries between Salmon Palls Creek and Malad Riv Idaho Continued

Stream

Blllingsly 

Creek.

Birch Creek. .

Tributary to

Snake River. . 

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

Location

SW£ sec. 11, T. 7 S., R. 13 E., 

at mouth lj miles north of 

Hagerman . 

SE£SE£ sec. 34, T. 6 S., R. 13 E., 

on Bud Smith's property, -J mile 

south of Malad River and 

2j miles north of Hagerman.

Drainage 

(sq ml)

-

Measured 

previously (water 

years )

1950-55

Date

Apr. 5 

Apr. 10

Discharge 

(efs)

212

*bl2,2

Malad River basin, Idaho

Malad Springs Malad River.. Springs head In SE£ sec. 24, T.

6 S., R. 13 E., and enter Snake

River in NWj sec. 34, T. 6 S.,

R. 13 E., 3 miles north of

Hagerman .

_ 1899,

1910-11,

1913,1917,

1919,1924,

1950-55

July 25 «bl,360

Tributaries between Malad River and Canyon Creek, Idaho

Clover Creek.

King Hill

Creek .

Little Canyon

Creek.

Snake River..

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

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

SWi sec. 15, T. 5 S., R. 12 E.,

Just upstream from flow line

of Saunders Reservoir, 3j

miles upstream from Hog Creek,

and 5 miles northwest of Bliss.

SW£ sec. 2, T. 5 S., R. 10 E.,

at road bridge on Worth Montgomery Ranch, 1-J miles upstream from mouth and ij miles

northwest of King Hill.

Sec. 18, T. 5 S., R. 10 E., at

bridge on county road, 2 miles

north of Glenns Ferry.

a!50

83.6

52.4

$1938-43

*1913,

$1938-41

$1909-13,

il»38-43

Jan. 6

Jan. 6

Jan. 7

93.8

44.9

18.7

Owyhee River basin

Owyhee River .

South Pork

Owyhee

River.

Little Owyhee

River

(Louse Creek)

Owyhee River.

North Pork

Owyhee

River.

Middle Pork

Owyhee

River .

Louse Creek. .

Crooked Creek

Snake River. .

Owyhee River.

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

Snake River. .

Owyhee River.

North Pork

Owyhee

River.

Owyhee River.

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

Sec. 25, T. 13 S., R. 5 W., at

Cruteher's erossing, Idaho.

Sec. 35, T. 13 S., R. 5 W. , 1 mile above East Pork and

3 miles southwest of Cruteherb

crossing, Idaho.

Above Three Porks, Oreg.,

0.5 mile above mouth.

Sec. 3, T. 35 S., R. 45 E., at

Three Porks, Oreg., 1,000 ft

above Middle Pork Owyhee

River.

Sec. 35, T. 34 S., H. 45 E., at

Three Porks, Oreg., 300 ft

above Middle Pork Owyhee

River.

Sec. 2, T. 35 S., R. 45 E., at

Three Porks, Oreg., 1,000 ft

above North Pork Owyhee

River.

Sec. 11, T. 33 S., H. 44 E.,

i mile upstream from mouth,

20 miles southeast of Home,

Oreg.

At former gaging station,

6 miles southwest of Home,

Oreg.

-

-

-

-

\

-

-

al,700 1946,

1949-55

June 17

June 17

June 18

June 16

June 16

June 16

June 18

Feb. 13

June 1

July 24

»121

296

d4.0

*261

*50.0

»8.90

*.40

 24.6

*23.6

*24.0

Boise River basin, Idaho

Middle Pork

Boise River

Cottonwood

Creek.

Cat Creek. . . .

Moore Creek. .

Granite Creek

Boise River. .

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

Little Camas

Creek.

Boise River..

Moore Creek. .

Sec. 4, T. 4 N., R. 7 E., 1,000ft

upstream from confluence with

North Fork Boise River, 1,000ft

upstream from Troutdale Hanger

Station, and 4j miles northeast of Twin Springs.

NWiNEi sec. 2, T. 3 N., R. 5 E.,

at flow line of Arrowrock Reservoir, Just downstream from

unnamed tributary, J mile

downstream from Ranger Creek

and Cottonwood Ranger Station

and 65 miles northeast of

Arrowrock .

SW£ sec. 11, T. 1 S., R. 9 E.,

6 miles northeast of Bennett.

SE^SE-t sec. 19, T. 6 N., R.

6 E., 1,000 ft upstream from

Hoodoo Creek, 0.6 mile upstream from Granite Creek,

and 2.4 miles northeast of

Idaho City.

NE£SE£ sec. 30, T. 6 N., R.

6 E., 3/8 mile upstream from

mouth and 2^ miles east of

Idaho City.

382

21.4

-

37.0

4.8

H.946-50

t!914^18,

«. 9 39-41

H.939-41

H.939-41

Dee. 28

Dee. 28"

June 15

Dec. 29

Dee. 29

698

33:i

*5.43

50.6

5.11

» Base flow.

* Gaging station operated during this period.

a Approximately.

b Discharge represents actual net spring flow adjusted for diversions and surface flow.

d Estimated.
256 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements made at points other than gaging stations In the Snake River basin 

during the water year 1956 Continued

Boise River basin, Idaho Continued

Stream

Moore Creek. .

Tributary to

Boise River. .

Location

NWjNWi sec. 18, T. 5 N., R. 5 E., 

1-f miles upstream from Thorn 

Creek and 5^ miles southwest 

of Idaho City.

Drainage 

area 

(sq mi)

119

Measured 

previously 

(water 

years)

$1939-41

Date

Dec. 29

Discharge 

(cfs)

144

Malheur River basin, Oreg.

Warm Springs

Creek.

North Pork

Malheur

River.

Near line between sees. 1 and 2,

T. 19 S., R. 37 E., 2.5 miles

northeast of Beulah.

Payette River basin, Idahc

Porter Creek. Payette River NE£ sec. 14, T. 7 N., R. 2 E.,

0.6 mile upstream from mouth

and 2 miles south of Gardena.

a 90 1936,1938,

1941,1944,

1946-55

Mar. 21 125

3

21.2 $1938-45 Dec. 28 23.5

Welser River basin, Idaho

Welser River.

Do ........

Middle Pork

Weiser

River.

Rush Creek. . .

Little Weiser

River.

Monroe Creek.

Snake River. .

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

Weiser River.

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

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

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

Sec. 34, T. 18 N., R. 1 W., at

Starkey Hot Springs, 200 ft upstream from Warm Springs Creek

and 85 miles north of Council.

Sec. 29, T. 16 N., R. 1 W., 0.7

mile downstream from Cottonwood

Creek, 2 miles upstream from

Middle Pork, and 3£ miles

southwest of Council.

NW£ sec. 10, T. 15 N., R. 1 W., at

old highway bridge 1-f miles

north of Mesa and 2s miles upstream from mouth.

SW^ sec. 2, T. 14 N., R. 3 W.,

in Cambridge, 200 ft upstream

from Superior Street and

3/8 mile upstream from mouth.

SW^ sec. 13, T. 14 N., R. 3 W.,

2 miles southeast of Cambridge.

SE^ sec. 34, T. 12 N., R. 5 W.,

0.5 mile upstream from Sheep

Creek and 6 miles north of

Welser.

106

390

86.5

a32

200

a32

*1939-49

$1937-50

$1911-12,

$1937-49

$1938-43

$1945-49

Dec. 29

Dec. 29

Dec. 29

Dec. 28

Jan. 6

Peb. 23

Dec. 30

239

953

150

50.4

207

1.3ZO

25.2

Powder River basin, Oreg.

Powder River.

Wolf Creek. . .

Powder River.

Snake River. .

Powder River.

Snake River. .

At former gaging station near

Halnes .

At former gaging station near

North Powder.

NE£ sec. 35, T. 9 S., R. 45 E.,

below highway bridge near

Rlchland.

572

32.9

-

1947-55

1946-55

July 27

July 18

July 24

12.6

4.44

118

Imnaha River basin, Oreg.

Imnaha River. Snake River . . At former gaging station above

Gumbo at Creek.

a98 1944-52,

1954

Oct. 19 n

Sept. 25

*71.3

*97.2

Grande Ronde River basin, Oreg.

Indian Creek.

Looklngglass

Creek.

Minam River. .

Grande Ronde

River.

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

Wallowa River

At former gaging station near

Imbler.

At mouth, 4 miles west of

Rondo wa.

N¥£ sec. 17, T. 1 N., R. 41 E.,

3.5 miles above mouth,

4 miles south of Minam.

a22

a95

a220

1946-50

1953-55

1953-55

Oct. 7

Sept. 27

Aug. 17

*6.20

*58.8

*161

Little Salmon River basin, Idaho

Little Salmon

River.

Salmon River. SEij-SWi sec. 15, T. 24 N., R.

IE., ^ mile upstream from

mouth and i mile southwest

of Rlgglns.

576 $1951-55 Peb. 27

Mar. 31

May 17

28

466

1,460

2,920

5,300

* Base flow.

t Gaging station operated during this period.

a Approximately.

The following table contains determinations of peak discharge made at drest stage by 

indirect methods or by current meter or computed from rating curve at points other than 

regular gaging stations.

Determination of peak discharge during water year October 1955 to September 1956

Stream

Phillips 

Creek.

Tributary to

Grande Ronde 

River.

Location

SEiN¥£ sec. 16, T. 1 N., R. 

39 E., 1-J miles west of 

junction of Oregon Highway 

204 and Wallowa Lake Highway in Elgin, Oreg.

Drainage 

area

(s<4 ml)

a30

Measured 

previously 

(water 

5'ears )

Date

Mar. 22

Discharge 

(cfs)

498

a Approximately.
INDEX

Page 

Accuracy of field data and computed

results......................... 7-8

Acre-foot, definition of.............. 2

Afton, Wyo., Swift Creek near......... 24

Agencies other than Geological Survey,

records collected by............ 11

Agency Valley Reservoir, Oreg. , contents of........................ 167

Ahsahka, Idaho, North Fork Clearwater

River near...................... 245

Alpine, Idaho, Indian Creek above reservoir, near.................... 27

McCoy Creek above reservoir, near... 26 

Alpine, Wyo., Greys River above reservoir, near.................... 21

Snake River above reservoir near.... 20

Amber, Wash., Williams Lake near...... 252

American Falls Reservoir at American

Falls, Idaho .................... 52

Anderson Ranch Dam, Idaho, Anderson

Ranch Reservoir at.............. 144

Fall Creek near..................... 142

South Fork Boise River at........... 145

Anderson Ranch Reservoir at Anderson

Ranch Dam, Idaho ................ 144

Arco, Idaho, Big Lost River near...... 102

Argora, Idaho, Medicine Lodge Creek

near............................ 87

Arrowrock, Idaho, Arrowrock Reservoir

at............... ...... ........ 146

Moore Creek near.................... 148

Robie Creek near.................... 149

Arrowrock Reservoir at Arrowrock,

Idaho........................... 146

Ashton, Idaho, Henrys Fork near....... 36

Asotin Creek near Asotin, Wash........ 238

Baker, Oreg., Powder River

near............................ 200

Banks, Idaho, North Fork Payette River

near............................ 4, 181

Page

South Fork Payette River near.

Bannock Creek near Idaho City, Idaho..

near Pocatello, Idaho ...............

Bear Creek above reservoir, near

Irwin, Idaho....................

near Wallowa, Oreg..................

Bear Valley Creek near Cape Horn,

Idaho...........................

Beaver Creek, at Camas, Idaho.........

at Dubols, Idaho ....................

Bellevue, Idaho, Big Wood River near.. 

Bennett, Idaho, Lime Creek near.......

Little Camas Canal near.............

Beulah, Oreg., North Fork Malheur

River at........................

North Fork Malheur River near.......

Big Creek near Big Creek, Idaho.......

Big Lost River, at Howell Ranch, near 

Chilly, Idaho...................

at Wild Horse, near Chilly, Idaho...

below Mackay Reservoir, near Mackay,

Idaho...........................

east channel of, above Mackay

Reservoir, near Mackay, Idaho... 

near Arco, Idaho ....................

west channel of, above Mackay

Reservoir, near Mackay, Idaho...

172

147

51

29

235

217

85

84

111

141

143

164

163

218

Big Wood River, at Hailey, Idaho.... .109-110 Clear Creek near Naf, Idaho

below Magic Dam, near Richfield, 

Idaho...........

near Bellevue, Idaho

near Ketchum, Idaho. 

Big Wood Slough at Hailey, Idaho...... 108

Birch Creek (tributary to Mud Lake),

near Reno, Idaho ................

Blackfoot, Idaho, Blackfoot River near

Snake River near....................

Blackfoot River near Blackfoot, Idaho. 

Blackfoot River basin, Idaho, gagingBlaine, Idaho, Camas Creek near........ 112

Blaine County Investment Co.'s canal

near Howe, Idaho. 91

Blue Lakes Spring near Twin Falls, 

Idaho.

Boise, Idaho, Boise River at........... 154

Boise River near..................... 151

Lucky Peak Reservoir near............ 150

Boise River, at Boise, Idaho ........... 154

at Notus, Idaho ...................... 159

diversions from.....................153, 158

near Boise, Idaho .................... 151

near Twin Springs, Idaho ............. 139

South Fork, at Anderson Ranch Dam,

Idaho............................ 145

near Featherville, Idaho ........... 140

Boise River basin, Idaho, gagingstation records in..............139-159

Box Canyon Springs near Wendell, Idaho. 77 

Brailsford ditch near Hagerman, Idaho.. 103 

Bridge, Idaho, Raft River near......... 55

Bruneau River, Idaho, East Fork near

Three Creek, Idaho ............... 127

East Fork near Hot Spring, Idaho..... 128

near Hot Spring, Idaho............... 129

Bruneau River basin, Idaho, gagingstation records in ..............126-129

17 

76 

82 

75 

Bully Creek near Vale, Oreg............ 166

Burnt River near Hereford, Oreg. ....... 199

Burnt River basin, Oreg., gagingBuffalo Fork near Moran, Wyo. 

Buhl, Idaho, Deep Creek near.

Salmon Falls Creek near....

Snake River near.

station records in..............198-201

C. J. Strike Reservoir near Grand 

View, Idaho.................

Caldwell, Idaho, Lake Lowell near.

Camas, Idaho, Beaver Creek at..... 

Camas Creek at.

Camas Creek (Malad River basin), near

Blaine, Idaho.

Camas Creek (Mud Lake basin), at

Camas, Idaho.....................

Cambridge, Idaho, Pine Creek near.....

Weiser River near...................

Cape Horn, Idaho, Bear Valley Creek

near.................

Middle Fork Salmon River 

near.

130

152

85

83

112

83

189

217

Carey, Idaho, Little Wood Reservoir

near............................. 116

Little Wood River near. ........ .115, 117, 118

Cascade, Idaho, Cascade Reservoir at.. 

North Fork Payette River at.........

Cascade Reservoir at Cascade, Idaho....

Catherine Creek near Union, Oreg......

Cedar Draw near Filer, Idaho..........

93 Cfs-day, definition of ................

92 Challis, Idaho, Challis Creek

near............................

101 Salmon River near...................

Challis Creek near Challis, Idaho .....

94 Chester, Idaho, Fall River near.......

102 Chilly, Idaho, Big Lost River near.... 

Clarkston, Wash., Snake River near.... 

95Clayton, Idaho, Salmon River near.....

179

180

179

228

74

2

209

208

209 

38

92,93 

4, 248 

207 

56 

Clearwater River at Kamiah, Idaho...... 243

at -Spalding, Idaho ................... 247

North Fork, at Bungalow ranger

station, Idaho~.................. 244

North Fork, near Ahsahka, Idaho...... 245

South Fork, near Elk City, Idaho..... 241

near Grangeville, Idaho............ 242

46 Clearwater River basin, Idaho, gaging47 station records in..............239-247

46Colfax, Wash., Palouse River near...... 249

Union Flat Creek near................ 250

station records in.............. 46-47 Computations, accuracy of, results of..

257

7-8
258 INDEX

Contact, Nev., Salmon Falls Creek

near............................ 78

Contents , definition of............... 3

Control, definition of................ 3

Cooperation, record of................ 1

Cottonwood Creek near Smoot, Wyo...... 23

Crane Creek, at mouth, near Weiser

Idaho........................... 193

near Midvale, Idaho................. 192

Crane Creek Reservoir near Midvale,

Idaho........................... 191

Cubic feet per second per square mile,

definition of................... 2

Cubic foot per second, definition of.. 2

Data, accuracy of.....................

explanation of......................

Deadwood Reservoir near Lowman, Idaho.

Deadwood River, below Deadwood Reservoir, near Lowman, Idaho ........ 170

Deep Creek near Buhl, Idaho ........... 76

Deer Creek near Winchester, Idaho..... 225

Devils Washbowl Spring, near

Kimberly, Idaho ................. 70

Discharge measurements at points other

than gaging stations: 

Bannock Creek basin................. 253

Boise River basin..................255-256 Heise, Idaho, Snake River near

Grande Ronde River basin............ 256

Henrys Pork basin................... 253

Imnaha River basin.................. 256

Little Salmon River basin........... 256

Malad River, tributaries between,

and Canyon Creek, Idaho......... 255

Malad River basin................... 255

Malheur River basin................. 256

Owyhee River basin.................. 255

Payette River basin................. 256

Powder River basin.................. 256

Rock Creek basin.................... 253

Salmon Falls Creek basin. ........... 254

Salmon Falls Creek, tributaries

between, and Malad River,

Idaho..........................254-255

Snake River at Milner, tributaries

between, and Rock Creek, Idaho.253-DE4 

Weiser River basin.................. 256

Note. Streams for which only discharge measurements are available 

are not entered by name in this 

index. 

Drainage area, definition of.......... 3

Drewsey, Oreg., Malheur River

near............................ 160

Dry Creek, at Eagle, Idaho............ 157

near Eagle, Idaho ................... 156

Dubois, Idaho, Beaver Creek at........ 84

Eagle, Idaho, Dry Creek at............ 157

Dry Creek near...................... 156

Spring Valley Creek near............ 155

Elgin, Oreg., Grande Ronde River

near............................ 229

Elk City, Idaho, South Fork Clearwater

River near...................... 241

Elk Creek above reservoir, near Irwin,

Idaho........................... 28

Emmett, Idaho, Payette River near..... 183

Etna, Wyo., Salt River, above reservoir, near...................... 25

Fall Creek, Idaho near Anderson

Ranch Dam, Idaho ................ 142

Fall River, diversions from. .......... 37,38

near Chester, Idaho ................. 38

near Squirrel, Idaho ................ 37

Featherville, Idaho, South Fork Boise

River near...................... 140

Filer, Idaho, Cedar Draw near......... 74

Floods, special reports on............ 11

French Creek, Idaho, Salmon River

near...........................221-222

Garden Valley, Idaho, South Fork

Payette River near.............

Gold Creek, Mev., Owyhee River near.. 

Wild Horse Reservoir near..........

Gooding, Idaho, Malad .River near. ....

Gooding Canal at Milner, Idaho.......

171

132

Goose Creek above Trapper Creek, near

Oakley, Idaho.

Goose Creek basin, Idaho, gagingstation records in............... 61-68

Grand View, Idaho, C. J. Strike

Reservoir near................... 130

Grande Ronde River, at La Grande, 

Oreg........................

at Rondowa, Oreg................

at Troy, Oreg...................

near Elgin, Oreg................

near Hilgard, Oreg.

227

236

237 

....... 229

....... 226

Grande Ronde River basin, Oreg.,

gaging-station records in.......226-237

Grangeville, Idaho, South Fork Clearwater River near................. 242

Grassy Lake, Idaho, contents of........ 44

Greys River, above reservoir, near 

Alpine, Wyo.

Gros Ventre River at Kelly, Wyo.

21

18

Hagerman, Idaho, Brailsford ditch near. 103 

King Hill Canal near................. 123

Riley Creek near..................... 104

Snake River near..................... 105

Hailey, Idaho, Big Wood River at......109-110

Big Wood Slough at................... 108

32 

Henrys Fork, at St. Anthony, Idaho..... 39

diversions from. ..................... 39, 42

near Ashton, Idaho................... 36

near Island Park, Idaho. 

near Lake, Idaho ........

near Rexburg, Idaho.....

Henrys Fork basin, Idaho, gaging35

33

43

station records in............... 33-45

smaller reservoirs in..............

Henrys Lake, Idaho, contents of. 

Hereford, Oreg., Burnt River near.. 

Hilgard, Oreg., Grande Ronde River

near.............................

Hobaek River near Jackson, Wyo.........

Hooper, Wash., Palouse River at.......

Hope, Oreg., Malheur River near.......

Horseshoe Bend, Idaho, Payette River

near.

Hot Spring, Idaho, Bruneau River near., 

East Fork Bruneau River near. ........

Howe, Idaho, Blaine County Investment 

Co.'s canal near.................

Little Lost River near.

Hurricane Creek near Joseph, Oreg......

44

44

199

226

19

251

165

182

129

128

91

90

233

Idaho City, Idaho, Bannock Creek near.. 147 

Imnaha River, at Imnaha, Oreg.......... 204

Indian Creek above reservoir, near 

Alpine, Idaho.

Indian Valley, Idaho, Little Weiser

River near.

Irwin, Idaho, Bear Creek above reserve ir, near..................

Elk Creek above reservoir, near... 

Palisades Reservoir near..........

Snake River near..................

Island Park, Idaho, Henrys Fork near... 

Island Park Reservoir near...........

Island Park Reservoir near Island

Park, Idaho.

Jackson, Wyo., Hobaek River near.......

Jackson Lake at Moran, Wyo.

Jarbridge River, East Fork, near Three

Creek, Idaho.

Johnson Creek at Yellow Pine, Idaho.... 

Jordan Creek above Lone Tree Creek,

near Jordan Valley, Oreg.

Jordan Valley, Oreg., Jordan Creek

near.

Joseph, Idaho, Snake River near........

Joseph, Oreg., East Fork Wallowa River 

near.............................

Hurricane Creek near.................

Wallowa Lake near....................

Wallowa River at.

Joseph powerplant Tailrace, diversions

from.

27

190

29

28

30

31

35

34

126

220

135

203

230

233

231

232

231

Kamiah, Idaho, Clearwater River at.
INDEX 259

Kelly, Wyo., Gros Venire River at..... 18 

Kendrick, Idaho, Potlatch Creek at.... 246 

Ketchum, Idaho, Big Wood River

near............................ 106

Warm Springs Creek near............. 107

Klmberly, Idaho, Devils Washbowl

Spring near..................... 70

Snake River near.................... VI

King Hill, Idaho, Snake River at...... 4,124

King Hill Canal near Hagerman, Idaho.. 123 

Knox, Idaho, South Pork Salmon River

near............................ 219

La Grande, Oreg., Grande Ronde

River at........................ 227

Lake, Idaho, Henrys Pork near......... 33

Lake Pork. See Payette River, Lake

Pork.

Lake Pork Reservoir near MeCall, Idaho 176 

Lake Irrigation District Canal near

McCall, Idaho ................... 177

Lake Lowell near Caldwell, Idaho...... 152

Lake Walcott, Idaho, diversions from.. 58-59 

near Mlnldoka, Idaho................ 57

Lakes and Reservoirs:

Agency Valley Reservoir, Oreg....... 167

American Palls Reservoir at American

Palls, Idaho.................... 52

Anderson Ranch Reservoir at Anderson

Ranch Dam, Idaho ................ 144

Arrowrock Reservoir at Arrowroek,

Idaho........................... 146

C. J. Strike Reservoir near Grand

View, Idaho ..................... 130

Cascade Reservoir at Cascade, Idaho. 179 

Crane Creek Reservoir near Mldvale,

Idaho........................... 191

Deadwood Reservoir near Lowman,

Idaho........................... 169

Grassy Lake, Idaho .................. 44

Henrys Lake, Idaho .................. 44

Island Park Reservoir near Island

Park, Idaho..................... 34

Jackson Lake at Moran, Wyo.......... 14

Lake Pork Reservoir near McCall,

Idaho........................... 176

Lake Lowell near Caldwell, Idaho.... 152

Lake Walcott near Mlnidoka, Idaho ... 57 

Little Wood Reservoir near Carey,

Idaho........................... 116

Lost Valley Reservoir near Tamarack,

Idaho........................... 186

Lucky Peak Reservoir near Boise,

Idaho........................... 150

Mackay Reservoir near Mackay, Idaho. 99 

Magic Reservoir near Richfield,

Idaho........................... 113

Mud Lake near Terreton, Idaho....... 86

Oakley Reservoir near Oakley, Idaho. 63 

Owyhee Reservoir at Owyhee Dam,

near Nyssa, Oreg............... 137

Palisades Reservoir near Irwin,

Idaho........................... 30

Payette Lake at McCall, Idaho....... 173

Salmon River Canal Co. reservoir

near Rogerson, Idaho ............ 80

Unity Reservoir near Unity, Oreg.... 198

Wallowa Lake near Joseph, Oreg...... 231

Warmsprings Reservoir, Oreg......... 167

Wild Horse Reservoir near Gold

Creek, Nev...................... 131

Williams Lake near Amber, Wash...... 252

Leadore, Idaho, Texas Creek near...... 212

Lemhl River near Lemhl, Idaho......... 213

Lime Creek near Bennett, Idaho ........ 141

Little Camas Canal at heading, near

Bennett, Idaho .................. 143

Little Lost River near Howe, Idaho.... 90

Little Welser River near Indian

Valley, Idaho................... 190

Little Wood Reservoir near Carey,

Idaho........................... 116

Little Wood River, at Campbell Ranch,

near Carey, Idaho............... 115

at Shoshone, Idaho.................. 121

near Carey, Idaho..................117, 118

near Richfield, Idaho ............... 120

Lochsa River near Lowell, Idaho ....... 240

Lost Creek near Tamarack, Idaho....... 187

Lost River-Mud Lake basins, Idaho,

gaglng-statlon records In.......83-102

Lost Valley Reservoir near Tamarack, 

Idaho..........................

Lostine River near Lostine, Oreg.....

Lowell, Idaho, Lochsa River near 

Selway River near..................

Lowman, Idaho, Deadwood Reservoir

near...........................

Deadwood River near................

South Pork Payette River at........

Lucky Peak Reservoir near Boise,

Idaho................... ......

Page

186

234

240

239

169

170

168

150

McCall, Idaho, Lake Fork Payette

River near......................175,178

Lake Fork Reservoir near............. 176

Lake Irrigation District Canal near.. 177 

North Pork Payette River at.......... 174

Payette Lake at...................... 173

McCammon, Idaho, Marsh Creek near...... 49

McCoy Creek above reservoir, rvar

Alpine, Idaho .................... 26

Mackay, Idaho, Big Lost River near 94, 95,101 

Mackay Reservoir near................ 99

Sharp ditch near..................... 100

Surface inflow to Mackay Reservoir

near............................. 98

Harm Spring Creek near............... 96,97

Mackay Reservoir, near Mackay, Idaho... 99 

Surface Inflow to, near Mackay,

Idaho............................ 98

Magic Reservoir near Richfield, Idaho.. 113 

Malad River near Hooding, Idaho........ 122

Malad River basin, Idaho, gagingstation records In..............106-123

Malheur River, at Little Valley, near

Hope, Oreg....................... 165

below Warmsprings Reservoir, near

Riverside, Oreg.................161-162

near Drewsey, Oreg................... 160

North Fork, above Agency Valley

Reservoir, near Beulah, Oreg..... 163

at Beulah, Oreg.................... 164

Malneur River basin, Oreg., gagingstation records in..............160-167

reservoirs in. 167 

Mann Creek near Weiser, Idaho .......... 196

Map of the United States............... 9

Marsh Creek near McCammon, Idaho....... 49

May, Idaho, Pahsimeroi River near...... 210

Medicine Lodge Creek at Kills Ranch,

near Argora, Idaho ............... 87

Midvale, Idaho, Crane Creek near....... 192

Crane Creek Reservoir near........... 191

Milner, Idaho, Hooding Canal at........ 66

Mllner low-lift canal near........... 65

North Side Twin Falls Canal at....... 67

P. A. lateral near................... 64

Snake River at....................... 69

South Side Twin Falls Canal at....... 68

Milner low-lift canal near Milner,

i Idaho............................ 65

Minihoka, Idaho, Lake Walcott near..... 57

North Side Minidoka Canal near....... 58

Snake River near..................... 60

South Side Mlnidoka Canal near....... 59

Moore Creek, above Robie Creek near

Arrowrock, Idaho ................. 148

Moran, Wyo., Buffalo Fork near......... 17

Jackson Lake at...................... 14

Pacific Creek near................... 16

Snake River at....................... 15

Mountain Home feeder canal near

Mountain Home, Idaho............. 125

Mud Creek near Tamarack, Idaho......... 223

Mud Lake near Terreton, Idaho.......... 86

Mud Lake-Lost River basins, Idaho,

gaging-station re-cords in........83-102

Murphy, Idaho, Snake River near........ 130

Naf, Idaho, Clear Creek near........... 56

Neeley, Idaho, Snsyke River at.......... 53

North Side Minidoka Canal near Minidoka , Idaho...................... 58

North Side Twin Falls Canal at Milner,

Idaho............................ 67

Notus, Idaho, Boise River at........... 159

Nyssa, Oreg., Owyhee Reservoir near.... 137

Oakley, Idaho, Goose Creek ne,ar. 

Oakley Reservoir near.........

Trapper Creek near............

61

63

62
260 INDEX

Page

Oakley Reservoir near Oakley, Idaho... 63 

Order, downstream of~listing gagingstatlons........................ 3

Owyhee Dam, Oreg., Owyhee Rlv,er below. 138 

Owyhee Reservoir at Owyhee Dam, near

Nyssa, Oreg..................... 137

Owyhee River, above China diversion

dam, near Owyhee, Nev........... 133

below Owyhee Dam, Oreg.............. 138

near Gold Creek, Nev................ 132

near Rome, Oreg..................... 136

South Fork, near Whiterock, Nev..... 134

Owyhee River basin, Nev.-Oreg.,

gaging-station records in......131-138

Oxbow, Oreg., Snake River ab .......... 202

P. A. lateral near Milner, Idaho...... 64

Pacific Creek near Moran, Wyo......... 16

Pahsimeroi River near May, Idaho...... 210

Palisades Reservoir near Irwin,

Idaho........................... 30

Palouse River, at Hooper, Wash........ 251

near Coifax, Wash................... 249

Palouse River basin, Wash., gagingstation records in.............249-252

Panther Creek near Shoup, Idaho....... 214

Payette Lake at McCall, Idaho......... 173

Payette River, Lake Fork, above Jumbo

Creek, near McCall, Idaho....... 175

Lake Fork, below Lake Irrigation 

District Canal, near McCall, 

Idaho........................... 178

near Emmett, Idaho .................. 183

near Horseshoe Bend, Idaho.......... 182

near Payette, Idaho................. 184

North Fork, at Cascade, Idaho....... 180

at McCall, Idaho.................. 174

near Banks, Idaho................. 4,181

South Fork, at Lowman, Idaho........ 168

near Banks, Idaho ................. 172

near Garden Valley, Idaho......... 171

Payette River basin, Idaho, gagingstation records in.............168-184

Peak discharge, indirect determinations of.................... 256

Picabo, Idaho, Silver Creek near...... 119

Pine Creek near Cambridge, Idaho ...... 189

Pocatello, Idaho, Bannock Creek near.. 51 

Portneuf River at................... 50

Portneuf River, at Pocatello, Idaho... 50 

at Topaz, Idaho..................... 48

Portneuf River basin, Idaho, gagingstation records in.............. 48-50

Potlatch Creek at Kendrick, Idaho..... 246

Powder River, near Baker, Oreg........ 200

near Robinette, Oreg................ 201

Powder River basin, Oreg., gagingstation records in.............200-201

Publications on streamflow by

Geological Survey............... 8-11

by State agencies ................... 11

Raft River at Peterson Ranch, near

Bridge, Idaho ................... 55

Raft River basin, Idaho, gagingstation records in.............. 55-56

Reno, Idaho, Birch Creek near......... 88-89

Reservoirs. See Lakes and Reservoirs. 

Rexburg, Idaho, Henrys Fork near...... 43

Richfield, Idaho, Big Wood River near. 114 

Little Wood River near.............. 120

Magic Reservoir near................ 113

Riley Creek, below Lewis Spring near

Hagerman, Idaho................. 104

Riley Creek basin, Idaho, gagingstation records in.............103-104

Riverside Oreg., Malheur River near. .161-162 

Robie Creek near Arrowrock, Idaho..... 149

Robinette, Oreg., Powder River near... 201 

Rock Creek near Rock Creek, Idaho..... 73

near Rockland, Idaho ................ 54

Rockland, Idaho, Rock Creek near...... 54

Rogerson, Idaho, Salmon River Canal

Co. canal near.................. 81

Salmon River Canal Co. reservoir

near............................ 80

Rome, Oreg., Owyhee River near........ 136

Rondowa, Oreg., Grande Ronde River

at. ............................. 236

'Runoff in inches, definition of.

St. Anthony, Idaho, Henrys Fork at..... 39

Teton River near..................... 41

Salmon Falls Creek, above upper Vineyard ditch, near Contact, Nev.... 78

near Buhl, Idaho ..................... 82

near San jacinto, Nev................ 79

Salmon Falls Creek basin, Idaho-Nev.,

gaging-station records in........ 78-82

Salmon River, at Salmon, Idaho......... 211

at Whitebird, Idaho .................. 224

below Valley Creek, at Stanley,

Idaho............................ 206

below Yankee Fork, near Clayton,

Idaho............................ 207

Middle Fork, near Cape Horn, Idaho... 216 

near Challis, Idaho .................. 208

near French Creek, Idaho ............221-222

near Shoup, Idaho .................... 215

South Fork, near Knox, Idaho......... 219

Salmon River basin, Idaho, gagingstation records in. ........1).... .205-225

Salmon River Canal Co. canal neari

Rogerson, Idaho.................. 81

Salmon River Canal Co. reservoir near

Rogerson, Idaho.................. 80

Salt River, above reservoir, near

Etna, Wyo........................ 25

near Smoot, Wyo...................... 22

Salt River basin, Wyo., gaging-station

records in....................... 22-25

San Jacinto, Nev., Salmon Falls Creek

near............................. 79

Selway River near Lowell, Idaho........ 239

Sharp ditch near Mackay, Idaho......... 100 - -- -- -.-. 45

121

Shelley, Idaho, Snake River near. 

Shoshone, Idaho, Little Wood River at..

Shoup, Idaho, Panther Creek near....... 214

 Salmon River near.................... 215

Silver Creek, Idaho, near Picabo,

Idaho............................

Silver Lake Canal, diversions from.....

Smoot, Wyo., Cottonwood Creek near.....

Salt River near......................

Snake River, above reservoir, near 

Alpine, Wyo.

119

231

23

22

. ............. 20

at King Hill, Idaho.................. 4,124

at Milner, Idaho ..................... 69

at Moran, Wyo........................ 15

at Neeley, Idaho..................... 53

at Oxbow, Oreg....................... 202

at Weiser, Idaho..................... 197

below Lower Salmon Palls, near

Hagerman, Idaho.................. 105

diversions from....... .37-39,42,45,47, 64-68

near Blackfoot, Idaho................ 47

near Buhl, Idaho..................... 75

near Clarkston, Wash................. 4, 248

near Heise, Idaho, 

near Irwin, Idaho, 

near Joseph, Idaho. 

near Kimberly, Idaho, 

near Minidoka, Idaho.

32 

31 

203 

71 

60 

near Murphy, Idaho................... 130

near Shelley, Idaho.................. 45

South Side Minidoka Canal near

Minidoka, Idaho.................. 59

South Side Twin Falls Canal at Milner,

Idaho............................ 68

Spalding, Idaho, Clearwater River at... 247 

Spring Valley Creek near Eagle, Idaho.. 155 

Squirrel, Idaho, diversions from Pall

River near....................... 37, 38

Pall River near...................... 37

Stage-discharge relation, definition

of............................... 2

Stanley, Idaho, Salmon River at........ 206

Valley Creek at...................... 205

Strike Reservoir. See C. J. Strike

Reservoir. 

Swift Creek near Afton, Wyo............ 24

Tamarack, Idaho, Lost Creek near....... 187

Lost Valley Reservoir near........... 186

Mud Creek near....................... 223

Weiser River at...................... 185

Terms, abbreviations, definition of.... 2

Terreton, Idaho, Mud Lake near......... 86

Teton River, Idaho, diversions from.... 42
INDEX 261

Teton River, near St. Anthony, Idaho., 

near Tetonia, Idaho.................

Tetonia, Idaho, Teton River near......

Texas Creek near Leaders, Idaho.......

Three Creek, Idaho, East Fork Bruneau

River near......................

Jarbridge River near................

Topaz, Idaho, Portneuf River at.......

Trapper Creek near Oakley, Idaho......

Troy, Oreg., Grande Ronde River at....

Twin Palls, Idaho, Blue Lakes Spring

near............................

Twin Springs, Idaho, Boise River

near............................

Union, Oreg., Catherine Creek near....

Union Flat Creek near Coifax,

Wash............................

Unity Reservoir near Unity, Oreg......

Vale, Oreg., Bully Creek near.. 

Valley Creek at Stanley, Idaho.

WSP, definition of....................

Wallowa, Oreg., Bear Creek near.......

Wallowa Lake, Oreg., diversions

from............................

Wallowa Lake near Joseph, Oreg........

Wallowa River, at Joseph, Oreg........

East Fork, near Joseph, Oreg........

Warm Spring Creek, east channel of,

near Mackay, Idaho..............

west channel of, near Mackay, Idaho.

Page

41

40

40

212

127

126

48

62

237

72

139

228

250

198

166

205

3

235

231

231

232

230

96

97

Page

Warm Springs Creek (tributary to Big 

Wood River), at Guyer Hot ' 

Springs, near Ketchum, Idaho..... 107

Warmsprings Reservoir, Oreg., contents

of............................... 167

Weiser, Idaho, Crane Creek near........ 193

Mann Creek near...................... 196

Snake River at....................... 197

Weiser Irrigation District Canal 

- near............................. 195

Weiser River near.................... 194

Weiser Irrigation District Canal near

Weiser, Idaho...................... 195

Weiser River, at Tamarack, Idaho....... 185

near Cambridge,.Idaho................ 188

near Weiser, Idaho................... 194

Weiser River basin, Idaho, gagingstation records in..............185-196

Wendell, Idaho, Box Canyon Springs

near............................. 77

Whitebird, Idaho, Salmon River at...... 224

Whiterock, Nev., South Fork Owyhee

River near....................... 134

Wild Horse Reservoir near Gold Creek,

Nev.............................. 131

Williams Lake near Amber, Wash......... 252

Winchester, Idaho, Deer Creek

................ 225

................ 2

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

near........

Work, division of. 

scope of........

Yellow Pine, Idaho, Johnson Creek

at.

U. S. GOVERNMENT PRINTING OFFICE : I9S8 0 467239

220