Surface Water Supply 

of the United States 

1956

Part 12. Pacific Slope Basins in Washington 

and Upper Columbia River Basin

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

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1446

Prepared in cooperation with the States 

of Idaho, Montana, and Washington, 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. G.
PREFACE

This report was prepared by the Geological Survey in cooperation 

with the States of Idaho, Montana, and Washington, 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:

T. R. Newell______________________________Boise, Idaho 

Frank Sternritz__________________________Helena, Mont. 

P. M. Veatch____________________________Tacoma, Wash.

in
CALENDAR FOR WATER YEAR 1956

OCTOBER 1955

S M T ¥ 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 31

JANUARY 1956

S M T W T F S

1234567

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

APRIL 1956

S M T W T F S

1234567

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30

JULY 1956

S M T W T F S

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8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

NOVEMBER 1955

5 M T W T F S 

12345

6 7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25 26

27 28 29 30

FEBRUARY 1956

S M T W T F S 

1234

5 6 7 8 9 10 11 

12 13 14 15 16 17 18 

19 20 21 22 23 24 25 

26 27 28 29

MAY 1956

5 M T W T F S 

12345

6 7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25 26

27 28 29 30 31

AUGUST 1956

S M T W T F S 

1234

5 6 7 8 9 10 11 

12 13 14 15 16 17 18 

19 20 21 22 23 24 25 

26 27 28 29 30 31

DECEMBER 1955

S M T W T F S 

123

456 7 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

5 M T W T F S 

1 2

3456789 

10 11 12 13 14 15 16 

17 18 19 20 21 22 23 

24 25 26 27 28 29 30

SEPTEMBER 1956

S M T W T F S 

1

2345678

9 1O 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30

IV
CONTENTS

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

Cooperation .......................................................................... I

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 ............................................................... 13

Pacific slope basins north of Columbia River 

Naselle giver basin 

Naselle River near Naselle , Wash ................................................. 13

Salmon Creek near Naselle , Wash ................................................ 14

Willapa River basin

Willapa River at Lebam, Wash. .................................................... 15

Fork Creek near Lebam, Wash. ................................................... 16

South Fork Willapa River near Raymond, Wash. ................................... 17

North River basin

North River near Brooklyn , Wash .................................................. 18

North River near Raymond , Wash ................................................... 19

Chehalis River basin

Chehalis River near Doty, Wash. .................................................. 20

Newaukum River near Chehalis, Wash. ............................................ 21

Skookumchuck River near Centralia , Wash ........................................ 22

Chehalis River near Grand Mound, Wash. ........................................... 23

Rock Creek at Cedarville , Wash. ................................................ 24

Chehalis River at Porter, Wash. .................................................. 25

Cloquallum River at Elma , Wash ................................................. 26

Satsop River near Satsop, Wash. ................................................ 27

Wynoochee River above Save Creek near Aberdeen , Wash ........................... 28

Humptulips River basin

Humptulips River near Humptulips, Wash. .......................................... 29

Quinault River basin

Quinault River at Quinault Lake , Wash ............................................ 30

Hoh River basin

Hoh River near Spruce , Wash ...................................................... 31

§

uillayute River basin 

oleduck River (head of Quillayute River) near Fairholm, Wash. ................... 32

Elwha River basin

Lake Mills at Glines Canyon, near Port Angeles , Wash ............................. 33

Elwha River at McDonald Bridge , near Port Angeles , Wash .......................... 34

Siebert Creek basin

Siebert Creek near Port Angeles , Wash ............................................ 35

Dungeness River basin

Dungeness River near Sequlm, Wash ................................................ 36

Snow Creek basin

Snow Creek near Maynard, Wash. ................................................... 37

Chimacum Creek basin

Chimacum Creek near Chimacum, Wash. .............................................. 38

Little Quilcene River basin

Little Quilcene River near Quilcene , Wash ........................................ 39

Duckabush River basin

Duckabush River near Brinnon , Wash ............................................... 40

Hamma Hamma River basin

Hamma Hamma River near Eldon , Wash ............................................... 41

Skokomish River basin

North Fork Skokomish River below Staircase Rapids, near Hoodsport, Wash. ......... 42

North Fork Skokomish River near Hoodsport , Wash .................................. 43

Deer Meadow Creek near Hoodsport, Wash. ........................................ 44

North Fork Skokomish River near Potlatch , Wash ................................... 45

South Fork Skokomish River near Potlatch, Wash. ................................ 46

South Fork Skokomish River near Union, Wash .................................... 47

Vance Creek near Potlatch , Wash .............................................. 48

Skokomish River near Potlatch , Wash .............................................. 49

Purdy Creek near Union , Wash ................................................... 50

Union River basin

Union River near Bremerton , Wash ................................................. 51

Union River near Belf air , Wash ................................................... 52

Tahuya River basin 

Tahuya River:

Gold Creek near Bremerton, Wash. ............................................... 53

Tahuya River near Bremerton, Wash. ............................................... 54

Tahuya River near Belf air , Wash .................................................. 55

Dogfish Creek basin

Dogfish Creek near Poulsbo, Wash. ................................................ 56

Minter Creek

Minter Creek:

Huge Creek near Wauna , Wash .................................................... 57

Sherwood Creek basin

Sherwood Creek:

Mason Lake near Union, Wash. ..................................................... 58

V
VI CONTENTS

Gaging-station records--Continued

Pacific slope basins north of Columbia River Continued

Goldsborough Creek basin Page 

Goldsborough Creek near Shelton, Wash............................................ 59

Skookum Creek basin

Skookum Creek at Kamilche, Wash.................................................. 60

Deschutes River basin

Deschutes River near Rainier, Wash............................................... 61

Woodland Creek basin

Woodland Creek near Olympia, Wash................................................ 62

McAllister Creek basin

McAllister Springs near Olympia, Wash............................................ 63

Nisqually River basin

Nisqually River near National, Wash.............................................. 64

Roundtop Creek:

Mineral Creek near Mineral, Wash............................................. 65

Alder Reservoir at Alder, Wash................................................... 66

La Grande Reservoir at La Grande, Wash........................................... 67

Nisqually River at La Grande, Wash............................................... 68

Mashel River near La Grande, Wash.............................................. 69

Ohop Creek near Eatonville, Wash............................................... 70

Nisqually River near McKenna, Wash............................................... 71

Nisqually River at McKenna, Wash................................................. 72

Chambers Creek basin

Chambers Creek below Leach Creek, near Steilacoom, Wash.......................... 73

Puyallup River basin 

Puyallup River:

Kapowsin Creek near Kapowsin, Wash............................................. 74

Puyallup River near Orting, Wash................................................. 75

Carbon River near Fairfax, Wash................................................ 76

South Prairie Creek at South Prairie, Wash................................... 77

Puyallup River at .Alderton, Wash................................................. 78

White River (head of Stuck River) at Greenwater, Wash.......................... 79

Greenwater River at Greenwater, Wash......................................... 80

Mud Mountain Reservoir near Buckley, Wash...................................... 81

White River near Buckley, Wash................................................. 82

Stuck River near Sutnner, Wash.................................................. 83

Lake Tapps near Sutnner, Wash ................................................. 84

Puyallup River at Puyallup, Wash................................................. 85

Duwamish River basin 

Green River (head of Duwamish River): 

Sunday Creek:

Snow Creek near Lester, Wash................................................. 86

Friday Creek near Lester, Wash................................................. 87

Green River near Lester, Wash.................................................... 88

Smay Creek near Lester, Wash................................................... 89

Bear Creek near Eagle Gorge, Wash.............................................. 90

Green River near Palmer, Wash.................................................... 91

Newaukum Creek near Black Diamond, Wash........................................ 92

Big Soos Creek:

Lake Sawyer (head of Covington Creek) near Black Diamond, Wash............... 93

Covington Creek near Black Diamond, Wash..................................... 94

Big Soos Creek near Auburn, Wash............................................... 95

Green River near Auburn, Wash.................................................... 96

Lake Washington basin 

North Fork Cedar River near Lester, Wash....................................... 97

South Fork Cedar River near Lester, Wash..................................... 98

Cedar River below Bear Creek, near Cedar Falls, Wash........................... 99

Cedar River near Cedar Falls, Wash............................................. 100

Rex River near Cedar Falls, Wash............................................. 101

Cedar River at Cedar Falls, Wash............................................... 102

Cedar River near Landsburg, Wash............................................... 103

Rock Creek near Maple Valley, Wash........................................... 104

Cedar River at Renton, Wash.................................................... 105

May Creek near Renton, Wash.................................................. 106

Mercer Creek near Bellevue, Wash............................................. 107

Issaquah Creek (head of Sammamish River) near Issaquah, Wash................... 108

Sammamish Lake near Redmond, Wash.............................................. 109

Sammamish River: 

Bear Creek:

Cottage Lake Creek near Redmond, Wash................ ..................... 110

Evans Creek above mouth, near Redmond, Wash................................ Ill

Bear Creek at Redmond, Wash.................................................. 112

Sammamish River near Redmond, Wash............................................. 113

North Creek near Bothell, Wash............................................... 114

Sammamish River at Bothell, Wash............................................... 115

Snohomish River basin

South Fork Sicykomish River (head of Snohomish River) near Index, Wash............ 116

Skykomish River near Gold Bar, Wash.............................................. 117

Wallace River at Gold Bar, Wash................................................ 118

Sultan River near Startup, Wash................................................ 119

Woods Creek near Monroe, Wash.................................................. 120

Snoqualmie River:

Patterson Creek near Fall City, Wash......................................... 121

Griffin Creek near Carnation, Wash........................................... 122

North Fork Tolt River near Carnation, Wash................................... 123

South Fork Tolt River near Carnation, Wash................................. 124

Tolt River near Carnation, Wash.............................................. 125

Snoqualmie River near Carnation, Wash.......................................... 126

Snohomish River:

Pilchuck River near Granite Falls, Wash........................................ 127

Little Pilchuck Creek near Lake Stevens, Wash................................ 128
CONTENTS VII

Gaging-station records Continued

Pacific slope basins north of Columbia River Continued

Snohomish River basin Continued Page

Snohomish River at Snohomish, Wash............................................... 129

Quilceda Creek near Marysville, Wash........................................... 130

Tulalip Creek basin

Lake Goodwin (head of Tulalip Creek} near Silvana, Wash.......................... 131

Lake Shoecraft near Tulalip, Wash................................................ 132

Stillaguamish River basin

South Pork Stillaguamish River near Granite Palls, Wash.......................... 133

South Pork Stillaguamish River above Jim Creek, near Arlington, Wash............. 134

Jim Creek near Arlington, Wash................................................. 135

North Fork Stillaguamish River:

Squire Creek near Darrington, Wash........................................... 136

North Fork Stillaguamish River near Darrington, Wash........................... 137

North Fork Stillaguamish River near Arlington, Wash............................ 138

Armstrong Creek near Arlington, Wash........................................... 139

Pilchuck Creek near Bryant, Wash............................................... 140

Skagit River basin

Skagit River at international boundary, near Hope, British Columbia.............. 141

Ruby Creek below Panther Creek, near Newhalem, Wash............................ 142

Ross Reservoir near Newhalem, Wash............................................... 143

Thunder Creek near Newhalem, Wash.............................................. 144

Stetattle Creek near Newhalem, Wash............................................ 145

Skagit River at Newhalem, Wash................................................... 146

Skagit River above Alma Creek, near Marblemount, Wash............................ 147

Cascade River at Marblemount, Wash............................................. 148

Sauk River above Whitechuck River, near Darrington, Wash....................... 149

Sauk River near Sauk, Wash..................................................... 150

Baker River below Anderson Creek, near Concrete, Wash.......................... 151

Baker River at Concrete, Wash.................................................. 152

Skagit River near Concrete, Wash................................................. 153

Alder Creek near Hamilton, Wash................................................ 154

Day Creek near Lyman, Wash..................................................... 155

Skagit River near Mount Vernon, Wash............................................. 156

Reservoirs in Skagit River basin, Wash........................................... 157

Samish River basin

Samish River near Burlington, Wash............................................... 158

Whatcom Creek basin

Whatcom Creek below hatchery, near Bellingham, Wash.............................. 159

Nooksaek River basin

Nooksack River above Cascade Creek, near Glacier, Wash........................... 160

South Fork Nooksaek River near Wickersham, Wash................................ 161

Skookum Creek near Wickersham, Wash.......................................... 162

Nooksaek River at Deming, Wash................................................... 163

Nooksaek River near Lynden, Wash................................................. 164

Fishtrap Creek at Lynden, Wash................................................. 165

Upper Columbia River basin 

Columbia River:

Kootenai River basin

Kootenay River at Newgate, British Columbia....................................... 166

Fisher River near Jennings, Mont............................................... 167

Kootenai River at Libby, Mont.................................................... 168

Lake Creek at Troy, Mont....................................................... 169

Yaak River near Troy," Mont..................................................... 170

Kootenai River at Leonia, Idaho.................................................. 171

Boulder Creek near Leonia, Idaho............................................... 172

Moyie River at Eastport, Idaho................................................. 173

Moyie River at Eileen, Idaho. .................................................. 174

Kootenai River at Boom Camp, near Bonners Perry, Idaho........................... 175

Kootenai River at Bonners Ferry, Idaho........................................... 176

Kootenai River near Bonners Ferry, Idaho......................................... 178

Deep Creek at Moravia, Idaho................................................... 179

Kootenai River at Klockmann Ranch, near Bonners Ferry, Idaho..................... 180

Kootenai River near Copeland, Idaho.............................................. 181

Long Canyon Creek near Porthill, Idaho......................................... 183

Smith Creek near Porthill, Idaho............................................... 184

Boundary Creek near Porthill, Idaho............................................ 185

Kootenai River at Porthill, Idaho................................................ 186

Kootenay Lake at Kuskonook, British Columbia..................................... 188

Columbia River at Birchbank, British Columbia...................................... 189

Pend Oreille River basin

Clark Fork (head of Pend Oreille River):

German Gulch near Ramsay, Mont................................................. 190

Flint Creek near Southern Cross, Mont.......................................... 191

Flint Creek at Maxville, Mont.................................................. 192

Boulder Creek at Maxville, Mont.............................................. 193

Middle Fork Rock Creek near Philipsburg, Mont.................................. 194

Blackfoot River:

Nevada Creek above reservoir, near Finn, Mont................................ 195

Blackfoot River near Ovando, Mont.............................................. 196

Blackfoot River near Bonner, Mont.............................................. 197

Clark Fork above Missoula, Mont.................................................. 198

West Fork Bitterroot River near Conner, Mont................................... 199

East Fork Bitterroot River near Conner, Mont................................. 200

East Fork Bitterroot River at Conner, Mont................................... 201

Bitterroot River near Darby, Mont.............................................. 2C2

Blodgett Creek near Corvallis, Mont.......................................... 203

Burnt Fork Creek near Stevensville, Mont..................................... 204

Lolo Creek above Sleeman Creek near Lolo, Mont............................... 205

Clark Pork below Missoula, Mont.................................................. 206
VIII CONTENTS

Gaging-station records Continued

Upper Columbia River basin Continued

Pend Oreille River basin Continued Page 

Clark Fork at St. Regis, Mont.................................................... 207

Flathead River at Plathead, British Columbia................................... 208

Flathead River near Columbia Falls, Mont....................................... 209

Middle Fork Flathead River at Essex, Mont.................................... 210

Middle Fork Flathead River near West Glacier-, Mont........................... 211

South Fork Flathead River at Spotted Bear ranger station, near Hungry

Horse, Mont............................................................ 212

Spotted Bear River near Hungry Horse, Mont................................. 213

Twin Creek near Hungry Horse, Mont......................................... 214

Lower Twin Creek near Hungry Horse, Mont................................... 215

Sullivan Creek near Hungry Horse, Mont..................................... 216

Graves Creek near Hungry Horse, Mont....................................... 217

Hungry Horse Reservoir near Hungry Horse, Mont............................... 218

South Fork Plathead River near Columbia Palls, Mont.......................... 219

Flathead River at Columbia Falls, Mont......................................... 220

Swan River near Bigfork, Mont................................................ 221

Plathead Lake at Somers, Mont.................................................. 222

Plathead River near Poison, Mcnt............................................... 223

Clark Fork near Plains, Mont..................................................... 224

Thompson River near Thompson Palls, Mont....................................... 225

Prospect Creek at Thompson Falls, Mont......................................... 226

Clark Fork at Thompson Falls, Mont............................................... 227

Clark Fork at Whitehorse Rapids, near Cabinet, Idaho ............................. 228

Pend Oreille Lake at Hope, Idaho................................................. 229

Pend Oreille River: 

Priest River: 

Priest Lake at outlet, near Coolin, Idaho...................................... 230

Priest River near Coolin, Idaho................................................ 231

Priest River near Priest River, Idaho.......................................... 232

Pend Oreille River at Newport, Wash.............................................. 233

Calispell Creek near Dalkena, Wash............................................. 234

Pend Oreille River below Box Canyon, near lone, Wash. ............................ 235

Sullivan Creek at Metaline Falls, Wash......................................... 236

Pend Oreille River below Z Canyon, near Metaline Falls, Wash..................... 237

Smaller reservoirs In Pend Oreille River basin in Montana........................ 238

Columbia River at international boundary........................................... 239

Kettle River basin

Kettle River near Perry, Wash.................................................... 240

Curlew Lake near Malo, Wash.................................................... 241

Kettle River near Laurier, Wash.................................................. 242

Colvllle River basin 

Colvllle River: 

Loon Lake:

Deer Lake near Loon Lake, Wash............................................... 243

Loon Lake near Loon Lake, Wash................................................. 244

Sheep Creek at Loon Lake, Wash................................................. 245

Sheep Creek at Springdale, Wash................................................ 246

Mill Creek near Colville, Wash................................................. 247

Colville River at Kettle Falls, Wash............................................. 248

Spokane River basin

Coeur d'Alene River (head of Spokane River) above Shoshone Creek, near Prichard,

Idaho...................................................................... 249

Coeur d'Alene River at Enaville, Idaho........................................... 250

Coeur d'Alene River near Cataldo, Idaho.......................................... 251

St. Joe River at Calder, Idaho................................................. 252

St. Maries River at Lotus, Idaho............................................. 253

Coeur d'Alene Lake at Coeur d'Alene, Idaho....................................... 254

Spokane River:

Hayden Lake at Hayden Lake, Idaho.............................................. 255

Rathdrum Prairie Canal at Huetter, Idaho....................................... 256

Spokane Valley Farms Co.'s canal at Post Falls, Idaho.......................... 257

Spokane River near Post Falls, Idaho............................................. 258

Spokane River above Liberty Bridge, near Otis Orchards, Wash..................... 259

Liberty Lake at Liberty Lake, Wash............................................. 260

Spokane River at Spokane, Wash................................................... 261

Latah Creek at Spokane, Wash................................................... 262

Deep Creek:

Medical Lake at Medical Lake, Wash. .......................................... 263

Little Spokane River at Elk, Wash.............................................. 264

Diamond Lake (head of West Branch Little Spokane River) near Newport, Wash... 265 

Sacheen Lake near Newport, Wash.............................................. 266

Eloika Lake near Elk, Wash................................................... 267

Little Spokane River at Dartford, Wash......................................... 268

Long Lake at Long Lake, Wash..................................................... 269

Spokane River at Long Lake, Wash................................................. 270

Franklin D. Roosevelt Lake:

Feeder canal at Grand Coulee, Wash................................................ 271

Franklin D. Roosevelt Lake at Grand Coulee Dam, Wash............................... 272

Columbia River at Grand Coulee Dam, Wash. .......................................... 273

Rufus Woods Lake at Bridgeport, Wash............................................... 274

Columbia River at Bridgeport, Wash................................................. 275

Okanogan River basin

Okanagan River at Okanagan Falls, British Columbia............................... 276

Osoyoos Lake near Oroville, Wash................................................. 277

Okanogan River at Oroville, Wash................................................. 278

Similkameen River:

Palmer Lake near Nighthawk, Wash............................................... 279

Similkameen River near Nighthawk, Wash......................................... 280

Okanogan River near Tonasket, Wash............................................... 281
CONTENTS IX

Gaging-statlon records Continued

Upper Columbia River basin Continued

Methow River basin Page 

Methow River at Twlsp, Wash...................................................... 282

Alta Lake near Pateros, Wash.................................................... 283

Chelan River basin

Stehekin River (head of Chelan River) at Stehekln, Wash.......................... 284

Lake Chelan:

Railroad Creek at Lucerne, Wash................................................ 285

Lake Chelan at Chelan, Wash...................................................... 286

Chelan River at Chelan, Wash..................................................... 287

Entiat River* basin

Entiat River at Entiat, Wash..................................................... 288

Wenatchee River basin 

Wenatchee Lake:

White River- near Plain, Wash................................................... 289

Wenatchee Lake near- Plain, Wash.................................................. 290

Wenatchee River below Wenatchee Lake, Wash....................................... 291

Chlwawa River near Plain, Wash................................................. 292

Wenatchee River- at Plain, Wash................................................... 293

Icicle Creek above Snow Creek, near Leavenworth, Wash.......................... 294

Wenatchee River- at Peshastin, Wash............................................... 295

Mission Creek:

Sand Creek near- Cashmere, Wash............................................... 296

Mission Creek near Cashmere, Wash.............................................. 297

Columbia River at Trinidad, Wash................................................... 298

Crab Creek basin

Crab Creek at Irby, Wash......................................................... 299

Wilson Creek at Wilson Creek, Wash............................................. 301

Crab Creek near Moses Lake, Wash................................................. 302

Rocky Ford Creek:

Park Lake near Coulee City, Wash............................................. 303

Park Creek below Park Lake, near Coulee City, Wash........................... 304

Blue Lake near Coulee City, Wash............................................. 305

Lenore Lake near Soap Lake, Wash............................................. 306

Soap Lake near Soap Lake, Wash............................................... 307

Rocky Ford Creek near Ephrata.Wash............................................ 308

Moses Lake at Moses Lake, Wash................................................... 309

Crab Creek near Warden, Wash..................................................... 310

Crab Creek near Smyrna, Wash..................................................... 311

Yakima River basin

Yakima River near Martin, Wash................................................... 312

Kachess River near Easton, Wash................................................ 313

Cle Elum River near Roslyn, Wash............................................... 314

Yakima River at Cle Elum, Wash................................................... 315

Yakima River at Umtanum, Wash.................................................... 316

Baches River:

Bumping River near Nile, Wash................................................ 317

American River near Nile, Wash............................................. 318

Tieton River at Tleton Dam, near Naches, Wash................................ 319

Tieton River at headworks of Tieton Canal, near Naches, Wash................. 320

Baches River below Tieton River, near Baches, Wash. ............................ 321

North Fork Ahtanum Creek near Tampico, Wash.................................... 322

South Fork Ahtanum Creek at Conrad Ranch, near Tampico, Wash................. 323

Yakima River near Parker, Wash................................................... 324

Yakima River at Kiona, Wash...................................................... 326

Reservoirs in Yakima River basin, Wash........................................... 327

Esquatzel Coulee basin

Providence Coulee (head of Esquatzel Coulee) at Cunningham, Wash................. 329

Esquatzel Coulee at Connell, Wash................................................ 330

Esquatzel Coulee at Eltopia, Wash................................................ 331

Discharge measurements at points other than gaging stations.......................... 332

Index................................................................................ 341

ILLUSTRATIONS

Page 

Figure 1. Gaglng-station structures: A., Columbia River at Trinidad, Wash.; B,

Columbia River at Trinidad, 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................................ 12
SURFACE WATER SUPPLY OF PACIFIC SLOPE BASINS IN WASHINGTON AND UPPER COLUMBIA RIVER

BASIN, 1956

SCOPE OF WORK

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

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

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

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

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

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

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

index to this reporb. 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 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. 

Montana: Office of State Engineer, F. E. Buck; State Water Conservation Board. 

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

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

Department of Fisheries, R. J. Schoettler, director; State Department of Game, J. A. 

Biggs, director; State Department of Highways, W. A. Bugge, director; cities of 

Aberdeen, Bellingham, Bremerton, Everett, Olympia, Seattle, and Tacoma, and town of 

Wilson Creek; Intercounty River Improvement Commission; Chelan County Public Utility 

District No. 1; Fend Oreille County Public Utility District No. 1; and Snohomish 

County Public Utility District No. 1; Grant, Skagit, and Whatcom Counties. 

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 4 gaging stations in 

Idaho, 2 in Montana, and 13 in Washington.

Assistance was also furnished by the Agricultural Research Service of the United States 

Department of Agriculture, the United States Department of the Army, the Weather Bureau of 

the United States Department of Commerce, Bureau of Reclamation and the Office of Indian 

Affairs of the United States Department of the Interior, and the United States Department 

of State. Acknowledgment is due to the Forest Service of the United States Department of 

Agriculture and the Weather Bureau for occupation permits and furnishing special reports 

of watershed conditions and precipitation records.

On waters adjacent to the international boundary, certain gaging stations are maintained 

by the United States (or Canada) under agreement with Canada (or the United States) and

1
8 SURFACE WATER SUPPLY, 1956, PART 18

the records are obtained and compiled in a manner equally acceptable in both countries. 

These stations are designated herein as "International gaging stations." 

The following organizations aided in collecting records: 

Idaho: Washington Water Power Co.

Montana: The Montana Power Co.; Washington Water Power Co. 

Washington: Crown Zellerbach Corporation; Puget Sound Power & Light Co.; 

Rayonier, Inc.; and 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.......................... Boise......................... 914 Jefferson Street.

Montana........................ Helena........................ 409 Federal Building.

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

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 (cfsm) is the average number of cubic feet of 

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

is distributed uniformly in time and area.

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

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

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

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

irrigation.

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

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

and represents a runoff of 0.0378 inch from 1 square mile.

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

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

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

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

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

computed on the basis of a level pool and does not include bank storage.
EXPLANATION OP DATA 3

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

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

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

within the area unless otherwise noted.

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

published reports.

DOWNSTREAM ORDER OP 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 Is situated and the stream to which it is Immediately tributary, 

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

represents one rank. This downstream order and system of Indention show which gaging stations are on tributaries between any two stations on a main stem and the rank of the tributary on which each gaging station is situated.

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

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

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

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

EXPLANATION OP 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 

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
A, COLUMBIA RIVER AT TRINIDAD, WASH. 

Recording-gage shelter and stilling well.

B, COLUMBIA RIVER AT TRINIDAD, WASH. 

East cable tower.

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

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

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

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

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

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

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

method in which the slope or fall in a reach of the stream is a factor in determining 

discharge. Information requisite for determining the slope or fall is obtained by means 

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

used as a factor in the determination of discharge.

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

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

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

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

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

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

daily records is not changed.

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

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

runoff of the stream. 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 of 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 of gages, locations, and daturns of previous gages used during the period of records available. Under 

"Average discharge" is given the average discharge for the number of years indicated. It 

is not given for stations having fewer than five complete years of record or for stations 

where changes in water development during the period of record cause the figure to have 

little significance. Under "Extremes" are given the maximum discharge and gage height; 

the minimum discharge if there is little or no regulation; the minimum daily discharge if 

there is extensive regulation (also the minimum discharge if useful); and the minimum gage 

height (unless it is of no importance). In the first paragraph, the cata 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
6 SURFACE WATER SUPPLY, 1956, PART 12

information concerning major floods that have occurred outside the period of record are 

given in the third or last paragraph under "Extremes." Unless otherwise qualified, the 

maximum discharge corresponds to the crest stage obtained by use of a water-stage recorder, 

a crest-stage indicator, or a nonrecording gage read at the time of the crest. If the 

maximum gage height did not occur at the same time as the maximum discharge, it is given 

separately. Information pertaining to the accuracy of the records and conditions which 

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

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

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

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

added to the description of all stations for which revised records have been published. 

Listed therein are all the reports in which revisions have been published, each followed 

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

years only one number is given; for instance, 1933 stands for the water year October 1, 

1932, to September 30, 1933. If no daily, monthly, or annual figures of discharge are 

concerned in the revision, that fact is brought out by notations after the year dates as 

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

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

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

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

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

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

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

series of reports.

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

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

not published for stations on canals.

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

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

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

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

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

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

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

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

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

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

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

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

station description.

In the table of daily discharge, the figures for the maximum day and minimum day for
ACCURACY OF FIELD DATA AND COMPUTED RESULTS 7

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 pep 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 discharges when the water was at crest stage. Likewise, the minimums in this summary are the minimum daily discharges.

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

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

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

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

the peaks are subject to substantial control by man.

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

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

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

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

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

For most gaging stations on lakes and reservoirs the data presented comprise a description of the station and a monthly summary table of stage and contents. For some reservoirs a table showing 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, but is not published for reservoirs for which only monthly data are given.

Discharge measurements and determinations of peak flows made at points 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 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

467Z40 O -58 -Z
8 SURFACE WATER SUPPLY, 1956, PART 12

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

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

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

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

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

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

because water must first be supplied to existing irrigation systems.

PUBLICATIONS

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

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

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

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

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

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

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

A, North Atlantic slope basins, Maine to Connecticut. 

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

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

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

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

to Pearl River.

3. Ohio River basin, in two volumes:

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

B, Cumberland and Tennessee River basins.

4. St. Lawrence River basin.

5. Hudson Bay and upper Mississippi River basins.

6. Missouri River basin, in two volumes:

A, Missouri River basin above Sioux City, Iowa. 

B, Missouri River basin below Sioux City, Iowa.

7. Lower Mississippi River basin.

8. Western Gulf of Mexico basins.

9. Colorado River basin.

10. The Great Basin.

11. Pacific slope basins in California.

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

13. Snake River basin.

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

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

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

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

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

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

Geological Survey, Washington, D. C.

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

the United States.

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

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

given on page 2.

Early records of the flow of streams in the United States are published in the reports
PUBLICATIONS
10 SURFACE WATER SUPPLY, 1956, PART 12

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

have been included for some streams.

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

(A » Annual Report; B Bulletin)

Report

10th A pt. 2 

llth A pt. 2

12th A pt. 2

13th A pt. 3

14th A pt. 2

B 131........

16th A, pt. 2

WSP 11.......

18th A, pt. 4

19th A, pt. 4

20th A, pt. 4

WSP 35 to 39.

21st A, pt. 4

WSF 47 to 52.

22d A, pt. 4.

WSP 65, 66...

WSP 75. ......

Character of data

Descriptive Information only.

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

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

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.

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

Year

1895-96.

1897.

1898.

1899.

1900.

1900.

1901.

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

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

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

Numbers of water-supply papers containing results of stream measurements In Pacific slope basins In

Year

1899

1900

1901

1902

1903

1904

1905

1906

1907-8

1909

1910

1911

WSP

38

51

66, 75

85

100

135

178

214

252

272

292

312

Year

1912

1913

1914

1915

1916

1917

1918

1919-20

1921

1922

1923

1924

WSF

332 -A

362-A

392

412

442

462

482

512

532

552

572

592

Year

1925

1926

1927

1928

1929

1930

1931

1932

1933

1934

1935

1936

WSP

612

632

652

672

692

707

722

737

752

767

792

812

Year

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

WSF

832

862

882

902

932

962

982

1012

1042

1062

1092

1122

Year

1949

1950

1951

1952

1953

1954

1955

1956

WSF

1152

1182

1216

1246

12S6

1346

1396

1446

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 WaterSupply Paper 119.

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

has been published as Water-Supply Paper 1316. 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 1316; however some of them are not contained in 

the publications of the Geological Survey. The table on the following page contains a list 

of these reports for the area covered by this report.
HYDROLOGIC CONDITIONS 11

State reports containing compilations of records of discharge

State

Washington. . . .

Period

1878-1953

Report

Vol. IV. 

Bull. 6, Monthly and yearly summaries 

of hydrographlc data.

Issued by

ment Station. 

Department of Conservation 

and Development.

Note. In addition to the records contained In the reports listed above, the following States have 

Issued annual or biennial reports In which are contained records of discharge: Idaho, Montana, 

Washington.

The reports listed In the foregoing table contain the customary records of discharge 

collected during the systematic operation of gaging stations. Detailed Information on the 

stage and discharge of many streams during major floods has been Included In special reports on these floods published by the Geological Survey. The more recent of these special reports also contain other pertinent hydrologlc Information and analyses and compilations of data relating to earlier notable floods. The following is a list of these rqwrts:

Report

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

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

WSP 968-B: Floods of the Puyallup and Chehalls River basins, Washington. 

WSP 1080: Floods of May-June 1948 In Columbia River basin. 

WS* 1137-1: Summary of floods In the United States during 1950.

Clr. 191: Floods In western Washington, frequency and magnitude In relation to drainage 

basin characteristics.

RECORDS OF 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 1955 to September 1956 by agencies other than the Geological Survey. The records of these stations 

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

elsewhere.

Records of discharge collected by agencies other than the Geological Survey

Stream

Yaklma River ...........

Location

Creek, near Toppenish, Wash.

Wash.

Easton, Wash. ..........

Period

1904, 

1910-15, 

1940-56

Collected by

Affairs .

Bureau of Reclamation.

Remarks

since 1923.

since 1924.

since 1924.

ttUnpublished 

since 1953.

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

* Monthly discharge, prior to 1951, published in WSP 1316; prior to 1954, in Washington State 

Water-Supply Bulletin No. 6.

Note. Records of daily discharge for many canals and drains in Washington and Montana for 1955 

and earlier years have been collected by the Bureau of Reclamation and the Office of Indian Affairs 

of the United States Department of the Interior in connection with irrigation and drainage projects. 

These records have not been published. The Inter-Rocky Mountain Forest and Range Experiment Station 

collects records of runoff from an area of 950 acres on Benton Creek near Priest River, Idaho.

HYDROLOGIC CONDITIONS

During each month of the 1956 water year, streamflow was excessive In more than half 

the area covered by this report. Monthly mean discharge was record-high at the gaging 

station on Chehalis River near Grand Mound, Wash., during October, November, and March; 

the yearly mean was also the maximum in 27 years of record. The April mean discharge on 

Spokane River at Spokane, Wash., was record-high for the month. Outstanding floods occurred In western Washington in November, and in eastern Washington in February and March. 

The water year runoff of Kootenai River at Bonners Ferry, Idaho, was the maximum In 

30 years of record. For two key gaging stations In the area, a comparison of the monthly 

and yearly mean discharges during the 1956 water year with the median discharges for the 

25-year period (1921-45) Is shown in figure 3 on the following page. For Spokane River 

at Spokane, Wash., the discharges shown have been adjusted for storage.
12 SURFACE WATER SUPPLY, 1956, PART 12

South Fork Skykomish River near Index, Wash. 

Drainage area, 365 sq mi.

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

Spokane River at Spokane, Wash. 

Drainage area, 4,290 sq mi.

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

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

KXXXXXX3 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.
GAGING-STATION RECORDS 13

PACIFIC SLOPE BASINS NORTH OF COLUMBIA RIVER

NASELLE RIVER BASIN

Naselle River near Naselle, Wash.

Location. Lat 46°22'25", long 123° 44' 45", in SW£ sec. 1, T. 10 N., R. 9 W., on left bank 

 150 ft downstream from county bridge, If miles upstream from Salmon Creek, and 3-? miles 

east of Naselle.

Drainage area. 55.3 sq mi.

Records available.--May 1929 to September 1956.

Gage.--Staff gage and crest-stage indicator; gage read twice daily. Altitude of gage is 

^4 ft (by barometer).

Average discharge.--27 years, 431 cfs (312,000 acre-ft per year).

Extremes.--Maximum discharge during year, 5,990 cfs Dec. 11 (gage height, 11.59 ft); minimum observed, 29 cfs Sept. 8 (gage height, 1.60 ft).

1929-56: Maximum discharge, 11,100 cfs Jan. 22, 1935 (gage height, 15.9 ft, from 

floodmarks), from rating curve extended above 4,000 cfs on basis of slope-area determination at gage height 15.2 ft; minimum observed, 19 cfs Sept. 12-14, 1949, 

Sept. 21-24, 1951; minimum gage height observed, that of Sept. 8, 1956.

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

Revisions (water years). WSP 1216: Drainage area. WSP1316: 1930(M), 1932-40(M), 

1945-46(M).

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used above 5OO cfs Nov. 20 to Apr. 5)

1.6 

1.8 

2.1 

2.5 

3.0 

3.5 

4.0

105

188

323

490

690

5.0 

6.0 

7.0 

8.0 

9.0 

10.0

1,180

1,780

2,450

3,150

3,950

4,770

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

21

28

29

30 

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

55

m

64 

159

230

144

140

522

965

1,100

718

650

534

434

396

335

270

240

227

205

188

176

176

183

934

*788

1,040

1,100

1,550

1,610

1,110

16,303

526

9.51

10.96

32,340

Nov.

865

2,140

5,410 

3,010

1,720

1,010

722

586

530

734

582

494

430

379

341

314

290

612

1,800

1,370

1,010

762

816

1,520

2,150

1,920

2,140

1,420

1,020

890

34,987

1,166

21.1

23.53

69,400

Dec.

1,020

935

793 

702

614

698

734

*788

920

1,200

4,050

3,190

1,550

905

670

542

438

498

658

1,960

3,350

3,190

2,140

1,740

1,530

1,190

935

694

586

502

427

39,129

1,262

22.8

26.31

77,610

Jan.

430

650

1,380 

2,380

2,840

5,250

2,190

1,140

845

726

666

646

658

582

1,090

2,570

1,880

1,240

1,050

1,060

890

845

850

766

674

582

498

455

406

350

3JU

55,860

1,092

19.7

22.77

67,160

Feb.

*278

250

237 

224

222

224

230

224

210

205

566

646

554

444

579

544

535

302

344

427

502

486

455

483

526

546

658

2,540

1,930

14,551

502

9.08

9.79

28,860

Mar.

2,450

5,270

*2,450 

1,710

1,090

757

1,500

1,520

1,000

726

582

498

462

430

402

396

lo?

399

538

770

1,920

1,980

7> , 170

2,090

1,440

955

752

694

890

1,150

1,220

57,615

1,213

21.9

25.30

74,600

Apr.

945

775

634 

558

506

438

458

410

369

550

558

514

295

278

259

242

*224

212

205

195

181

172

163

152

146

138

134

134

128

124

9,455

315

5.70

6.56

18,750

May

116

TIT

107 

105

105

101

98

92

89

98

107

107

100

87

80

77

75

70

70

70

68

66

64

*64

64

62

62

60

58

56

56

2,545

82.0

1.48

1.71

5,040

June

SB- 55

56 

68

87

148

347

458

995

49?

565

287

248

276

254

217

205

188

186

181

165

157

148

140

132

124

118

113

107

105

6,455

215

5.89

4.54

12,800

July

100

96

92 

94

118

126

100

91

84

82

82

80

75

75

72

68

67

62

61

56

56

55

54

*54

54

51

51

51

48

48

il

2,250

72.6

1.31

1.51

4,460

Aug.

47

75

134 ~67

58

54

52

51

49

48

45

44

42

42

42

4E

40

40

40

57_

37

37

37

40

40

41

41

40

40

*37

37

1,476

47.6

0.861

0.99

2,930

Sept.

36

55

55 

34

30

50

50

29

56

170

448

152

105

89

77

70

67

66

61

70

77

87

72

66

75

101

107

82

105

144

2,606

86.9

1.57

1.75

5,170

Calendar year 1955: Max 4,030 Mln 49 Mean 499 Cfsm 9.02 In. 122.44 Ac-ft 361,100

Water ater year year 1955-56: 1955-56: Max Max 4,030 4,050 Mln Mln 29 29 Mean Mean 550 550 Cfsm Cfsm 9.95 9.95 In. In. 135.32 155.32 Ac-ft Ac-ft 399,100 399,100

Peak discharge (base, 4,000 cfa). Nov. 2 (8:35 p.m.) 4,510 cfs (9.70 ft); Dec. 11 (time unknown) 

,990 cfs (11.59 ft); Dec. 21 (time unknown) 4,650 cfs (10.12 ft); Mar. 2 (time unknown) 4,220 cfs 

(9759 9.59 ftl. ft).

* Discharge measurement made on this day.
14 NASELLE RIVER BASIN

Salmon Creek near Naselle, Wash.

Location. Lat 46°21'20", long 123°45'00", In Nl£ sec. 14, T. 10 N., R. 9W., on left bank 

half a mile upstream from last crossing of U. S. Highway 830, 2 miles upstream from 

mouth, and 3 miles southeast of Naselle.

Drainage area. 16.4 sq mi.

Records available. June 1953 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 80 ft (from topographic map).

Extremes. Maximum discharge during year, 2,600 ofs Dec. 21 (gage height, 7.94 ft), from 

rating curve extended above 560 cfs by logarithmic plotting; minimum, 2.9 cfs Sept. 6 

(gage height, 1.09 ft).

1953-56: Maximum discharge, that of Dec. 21, 1955; minimum, 2.4 cfs Sept. 20, 1953 

(gage height, 0.90 ft).

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

Slight regulation from millpond. Possibly some diversion for domestic use.

Revisions (water years).--WSP 1346: 1953(M).

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

and discharge, In cubic feet per second)

3.1 

5.5 

8.3

2.5 112

4.5 

5.0

6.0 

7.0

187

287

410

556

746

1,220

1,850

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

Cfsm

In.

Ac-ft

Oct.

11

l?.5

13

47

52

35

67

305

619

TSo

272 

240

175

139

116

98

84

72

69

59

52

47

42

90

272

*242

*307

334

518

415

312

5,536.5

179

10.9

12.56

10,980

Nov.

230

879

87?

668

397

252

177

138

129

151

124 

108

98

87

77

75

70

25?

453

327

259

209

228

439

597

664

653

405

265

240

9,523

317

19.3

21.60

18,890

Dec.

301

263

207

170

167

192

189

*302

263

283

1.280 

926

410

252

184

142

116

112

171

628

1,250

1,100

594

682

485

344

254

192

154

129

111

11,853

382

23.3

26.88

23,510

Jan.

113

197

483

704

781

764

497

334

250

192

164 

139

132

139

305

550

410

342

336

301

a310

a230

a230

a210

also

alSO

a!4o

a!20

alOO

a85

a8O

8,968

289

17.6

20.34

17,790

Feb.

*68

63

58

55

57

54

53

49

45

44

112 

126

122

105

90

84

81

77

95

164

200

187

170

198

272

287

375

5B~9" 956

4,806

166

10.1

10.90

9,530

Mar.

692

742

608

*550

359

244

776

569

344

234

173 

144

126

110

98

90

87

85

87

106

374

397

853

5oT

334

259

218

196

224

352

372

10,307

332

20.2

23.37

20,440

Apr.

292

?2T

173

144

118

100

99

86

75

68

63 

58

54

50

48

44

*41

40

37

35

34

32

31

28

28

26

25

28

26

23

2,130

71.0

4.33

4.83

4,220

May

22

2T

20

20

19.5

18

17.5

17

15.5

17.5

21 

21

17.5

15.5

14.5

14

13

12.5

12

12.5

12

11.5

11

*10.5

10

10.5

10

9.3

9.0

8.3

77G

453.2

14.6

0.890

1.03

899

June

9.3

8.6

loTs 11

17

39

59

129

163

TOT

80 

65

60

67

56

52

47

42

42

41

36

35

32

30

28

26

25

23

21

21

1,379.4

46.0

2.80

3.13

2,740

July

21

21

21

20

39

28

22

18.5

17.5

17

16 

15.5

14.5

14.5

14

13

12

11

10

9.6

9.3

9.0

a8. 3

*7.7

7.4

7.1

6.8

6.8

6.5

6.3

A »

o . o

436.6

14.1

0.860

0.99

866

Aug.

6.3

24

29

13

10.5

9.6

8.6

8.0

7.7

7.4

7.1 

6.8

6.3

6.8

6.5

6.8

6.3

5.8

5.3

5.0

5.0

4.8

4.8

6.0

7.1

6.5

6.3

5.8

5.3

*5.0

4.j>

247.9

fr.OO

0.488

0.56

492

Sept.

4.1

3.8

3.6

3.6

3.1

3.1

3.1

3.1

21

64

80 sy

23

19.5

17

15

14

13

«12

15

19.5

15

13

14.5

15.5

25

25

26

30

40

577.5

19.2

1.17

1.31

1,150

Calendar year 1955: Max 1.28O Min 6.8 Mean 137 Cfsm 8.35 In. 113.21 Ac-ft 99,03O

Water year 1955-56: Max 1,28O Min 3.1 Mean 154 Cfsm 9.39 In. 127. 50 Ac-ft 111,500

Peak discharge (base, 1,300 cfs).-

(7.20 ft); Dec. 21 (6:30 p.m.) 2,600

-Nov. 2 (5 p.m.) 1,650 cfs (6.71 ft); Dec. 11 (7 p.m.) 1,990 ofs 

cfs (7.94 ft); Mar. 7 (5:30 p.m.) 1,47O cfs (6.44 ft).

Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of recorded range in stage and records for 

stations on nearby streams.
WILLAPA RIVER BASIN 15

Willapa River at Lebam, Wash.

Location. Lat 46°33'50", long 123°33'50", in Sw£ sec. 33, T. 13 N., R. 7 W., on left 

bank half a mile west of Lebam and 1 mile upstream from Walker Creek.

Drainage area. 41.4 sq mi.

Records available.--June 1948 to September 1956.

Gage. Water-stage recorder. Datum of gage is 154.0 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947.

Average discharge. 8 years, 208 cfs (150,600 acre-ft per year).

Extremes. Maximum discharge during year, 2,850 cfs Dec. 21 (gage height, 12.06 ft); minimum, 6.3 cfs Aug. 18-23 (gage height, 2.48 ft).

1948-56: Maximum discharge, 4,930 cfs Feb. 22, 1949 (gage height, 17.53 ft, from 

high-water mark in gage house), from rating curve extended above 2,200 cfs; minimum, 

1.4 cfs Sept. 22, 1951; minimum gage height, 2.39 ft Aug. 22, 23, 1951, Oct. 27, 1952.

Remarks. Records good. No regulation. Some diversion for domestic use.

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

in cubic feet per second)

Oct. 1 to Mar. 23 Mar. 24 to Sept. 30

2.4

2.5 

2.7 

2.9

3.1

5.0

11.0

31

59

95

3.5 

4.0 

5.0 

7.0 

10.0

190

315

590

1,190

2,120

2.4

2.5

2.6

2.7 

2.9

3.0

9.0

18

29

57

3.1 90

3.5 168

4.0 285

5.0 560

7.0 1,160

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

Day

1

2

3

4

5

6

7

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

In.

Ac -ft

Oct.

9.8

978

10.5

20

38

27

31

191

435

315

198

150

114

97

82

68

62

58

56

53

48 

44

43 

*56

353

300

275

285

573 

^Tc Dob

XT 0 %ou

4,976.1

161

3.89

4.47

9,870

Nov.

345

1,220

1,900

1.950

873

524

370

302

262

262

238

210

190

165

158

140

133

476

1,020

659

491 

385

385 

1,150

1,420

1,120

1,060

680

479

435

18,982

633

15.3

17.05

37,650

Dec.

509

521

432

352

368

»440

473

618

557

470

1,290

1,280

710

470

375

305

255

250

He

1,640

1.920 

1,710

1,110 

1,120

959

740

575

455

378

322

275

21,325

688

16.6

19.16

42,300

Jan.

288

570

1,060

1,350

1,640

2,060

1,030

635

485

378

332

302

308

305

574

1,330

857

632

614

554

476 

418

402 

432

378

332

282

262

235

*200

1 7Q JL / a

18,899

610

14.7

16.98

37,490

Feb.

155

140

133

130

130

128

128

128

118

112

121

162

185

182

160

150

160

155

215

352

388 

348

310 

370

449

452

502

1,070

797

7,830

270

6.52

7.03

15 , 530

Mar.

*893

1,040

1,110

992

662

473

1,070

1,040

662

467

372

315

285

265

248

235

228 235"

240

250

510 

692

1.860 

1,040

710

542

428

378

382

536

596

18,756

605

14.6

16.85

37,200

Apr.

491

390

328

288

254

223

220

197

181

*181

175

168

160

151

143

135

123

119

116

118

119

116

106 

94

82

78

78

80

76

70

5,060

169

4.08

4.55

10,040

May

-gz 63

57

57

56

54

50

48

48

50

51

48

44

42

41

37

36

36

34

33

34

*27

27 

27

27

27

28

25

22

?5" 21 

1,234

39.8

0.961

1.11

2,450

June

22

2?

30

37

37

44

95

83

141

T25

108

88

75

76

71

63

60

54

52

52

46 

44

42 

38

37

34

33

30

29

28

1,696

56.5

1.36

1.52

3,360

July

27

25

25

25

29

3025-

21

20

20

*20

19

18

18

18

17

15

14

12

12

11.5 

10.5

9.0 

8.3

8.3

8.3

8.3

7.6

i'.e

7.6

504.6

16.3

0.394

0.45

1,000

Aug.

7.6

13

41

17

13

11.5

10.5

10.5

9.8

9.8

9.0

7.6

7.6

7.6

8.3

8.3

6.9

375- 6.3

6.3

6.3 

6.3

6.3 

6.9

12

12

9.8

*9.8

8.3

8.3

7.6

311.5

10.0

0.242

0.28

618

Sept.

7.6

7.6

7.6

7.6

7.6

T76" 6.9

7.6

26

42

75

SI

27

21

18

16

15

14

13

14

17 

17

14

13

14

19

22

17

18

28

558.1

18.6

0.449

0.50

1,110

Calendar year 1955: Max 1,930 Min 5.6 Mean 230 Cfsm 5.56 In. 75.32 Ac-ft 166,300

Water year 1955-56: Max 2,060 Min 6.3 Mean 274 Cfsm 6.62 In. 89.95 Ac-ft 198,600

Peak discharge (base. 1.800 efs). Nov. 4 (1 a.m.) 2,640 cfs (11.46 ft); Nov. 24 (9:30 p.m.) 

2,240 cfs (10.32 ft); Dec. 11 (9 p.m.) 2,150 cfs (10.06 ft); Dec. 21 (7 p.m.) 2,850 cfs (12.06 ft); 

Jan. 6 (6:30 a.m.) 2,600 cfs (11.36 ft); Mar. 7 (6 to 7:30 p.m.) 1,830 cfs (9.14 ft); Mar. 23 

(1 to 1:30 p.m.) 2,570 cfs (11.28 ft).

* Discharge measurement made on this day.
WILLAPA RIVER BASIN 

Fork Creek near Lebam, Wash.

Location.--Lat 46°33'20", long 123°35'00", in NW£ sec. 5, T. 12 N., R. 7 W., on right 

bank three-quarters of a mile upstream from mouth and ij miles southwest of Lebam.

Drainage area.--20.4 sq mi.

Records available.--June 1953 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 155 ft (from topographic map).

Extremes. Maximum discharge during year, 2,270 cfs Mar. 23 (gage height, 6.30 ft), from 

rating curve extended as explained below; minimum, 6.2 cfs Sept. 4, 5 (gage height, 

1.69 ft).

1953-56: Maximum discharge, 2,430 cfs Feb. 19, 1954 (gage height, 6.36 ft), from 

rating curve extended above 940 cfs on basis of slope-area determination at gage height 

7.75 ft for flood of Dec. 9, 1956; minimum, that of Sept. 4,5, 1956.

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

Small diversion to State fish hatchery with possibly some regulation.

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

and discharge, In cubic feet per second)

1.7

1.8

1.9 

2.1 

2.3

6.6

12.5

21

44

77

2.6 

3.0 

3.5 

4.0 

5.5

146

267

475

735

1,680

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ibtal

Mean

Cfsm

In.

Ac-ft

Oct.

15.5

TZ

15

85

81

50

70

333

636

344

188

154

119

94

79

68

59

54

56

50

46

43

40

90

*525

278

257

289

692

304

5,574.5

180

8.82

10.16

11,060

Nov.

227

973

1.510

1,390

585

328

224

179

151

154

134

116

105

100

90

79

77

416

669

412

297

233

271

867

928

802

735

439

293

278

13,062

435

21.3

23.81

25,910

Dec.

352

289

227

190

193

*264

260

373

324

286

1,350

874

417

271

208

168

141

138

2l5

944

1,110

1,170

691

702

585

426

316

240

196

168

149

15,217

426

20.9

24.10

26,220

Jan.

157

550

713

964

1,130

1,2OO

605

369

289

230

224

214

224

227

628

1.230

580

404

421

382

336

324

336

282

a230

a2OO

a!70

a 150

a!30

al!5

*105

12,897

416

20.4

23.51

25,580

Feb.

94

88

83

81

81

79

77

77

75

li

140

170

154

112

94

90

88

85

107

157

173

160

141

165

199

196

240

790

550

4,596

158

7.75

8.58

9,120

Mar.

1,020

994

*826

565

361

257

736

664

378

260

202

168

151

134

124

119

T28

160

190

199

674

796

1.620

757

495

378

282

271

378

630

530

14,447

466

22.8

26.34

28,660

Apr.

369

278

227

208

185

157

173

154

al50

a!5O

*14P

158

136

131

116

105

92

90

94

103

100

88

77

72

68

66

63

61

63

§t

3,916

131

6.42

7.14

7,770

May

52

48

47

44

44

45

41

40

39

40

41

40

38

54

31

30

29

28

a26

a23

a21

*20

21

22

19.5

18.5

20

18.5

17.5

17

17.5

970.5

31.5

1.53

1.77

1,920

June

17.5

16

20

25

32

79

156

172

266

15T

112

85

75

79

75

66

61

54

52

52

46

43

40

36

34

32

50

28

27

26

1,967.5

65.6

3.22

3.59

3,900

July

25

24

23

22

40

48

34

28

25

23

*21

19.5

19.5

18.5

17.5

17

16

15

14

13.5

14

13.5

12.5

12.5

12

11.5

11.5

11.5

11.5

10.5

1675

595.0

19.2

0.941

1.08

1,180

Aug.

10.5

20

32

16

14

12.5

12

11.5

11.5

10.5

10

10

9.6

9.6

10

9.6

9.6

8.4

8.4

8.4

8.4

7.8

7.8

8.4

12.5

10.5

9.6

*8.4

8.4

7.8

7.2

340.9

11.0

0.539

0.62

676

Sept.

6.6

6.6

6.6

6.6

6.6

7.2

7.8

8.4

35

53

75

34

23

19.5

16.8

16

14

13.5

12

15

17.5

15

12.5

15

19.5

29

27

26

39

52

635.7

21.2

1.04

1.16

1,260

Calendar year 1955 : Max 1,510 Mln 9.0 Mean 168 Cfsm 8.24 In. 111.97 Ac-ft 121, 9OO

Water year 1955-56: Max 1,620 Mln 6.6 Mean 197 Cfsm 9.66 In. 131.66 Ac-ft 143,300

Peak discharge (base. 2.OOP cfa). Nov. 3 (ll p.m.) 2,04O cfs (6.O1 ft); Dec. 11 (6 p.m.) 2,200 

cfs (6.21 ft); Mar. 23 (lo a.m.) 2,27O cfs (6.30 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and records for 

stations on nearby streams.
WILLAPA RIVER BASIN l"i 

South Fork Willapa River near Raymond, Wash.

Location. Lat 46°37i45", long 123°42'00", in £5 sec. 8, T. 13 N., R. 8 W., on left bank 

at downstream side of logging bridge, a quarter of a mile downstream from Rue Creek 

and 4^ miles southeast of Junction of Highways 101 and 12 at Raymond.

Drainage area.--27.3 sq mi.

Records available.--May 1953 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 155 ft (from topographic map).

Extremes.--Maximum discharge during year, 2,060 cfs Dec. 11 (gage height, 6.92 ft); minimum daily, 22 cfs Aug. 20-23, Sept. 5-8.

1953-56: Maximum discharge, that of Dec. 11, 1955; minimum daily, that of 

Aug. 20-23, Sept. 5-8, 1956.

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

Some slight diversion for domestic use. No regulation.

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

In cubic feet per second) 

(Shifting-control method used Aug. 28, Sept. 5-12)

Oct. 1 to Mar. 2 Mar. 3 to Sept. 30

1.6 

1.8 

2.0 

2.5

74

180

3.0 

4.0 

6.1

325

710

1,650

1.6 

1.8 

2.0

2.5

3.0 

5.0

170

300

1,040

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

In.

Ac-ft

Oct.

30

3T

31

62

68

47 

63

134

180

182

116

104

88

77

70

65

62

60

60

58

54

52

51

94

*272

205

192

205

399

353

290

3,755

121

4.43

5.12

7,450

Nov.

233

590

742

694

470

342 

269

228

228

260

220

195

178

165

158

145

133

338

490

370

311

272

263

397

514

578

614

474

381

374

10,626

354

13.0

14.48

21,080

Dec.

381

392

339

287

275

278 

*275

350

322

311

1,180

1.190

668

486

384

322

272

254

rsT

614

861

928

710

880

806

642

526

416

353

300 

269

15,552

502

18.4

21.19

30,850

Jan.

263

391

546

782

1,090

1.610 

892

590

462

370

325

284

281

275

398

1,030

754

538

478

458

406

367

360

346

308

275

245

230

210

190 

*180

14,934

482

17.7

20.34

29,620

Feb.

160

150

140

130

130

130 

125

120

120

115

130

170

190

180

160

150

150

200

300

360

380

320

350

400

450

500

800

950 BOO"

8,260

285

10.4

11.25

16,380

Mar.

900

1,000

*940

900

600

500 

1,000

900

600

400

350

*300

268

242

222

205

195

185

178

175

311

321

607

468

369

315

273

260

282

390

408

14,064

454

16.6

19.16

27,900

Apr.

351

356

268

250

225

208 

208

192

178

168

*158

148

141

135

129

123

120

114

111

107

104

102

98

95

93

92

88

95

90

J35

4,582

153

5.60

6.24

9,090

May

82

rs

76

80

76

73 

71

70

68

73

73

70

68

65

62

60

60

59

57

57

56

54

53

*50

*49

56

49

47

46

¥F 

46

1,930

62.3

2.28

2.63

3,830

June

46

55" 44

47

49

59

87

114

158

ITT

92

82

76

78

75

71

68

65

65

65

63

63

60

59

57

56

54

53

51

51

2,069

69.0

2.53

2.82

4,100

July

50

50

49

49

60

53 

47

47

*44

44

43

43

42

42

42

39

39

38

37

36

37

36

36

36

35

35

33

33

3232" 

32

1,271

41.0

1.50

1.73

2,520

Aug.

32

40

65

45

35

35 

35

34

33

32

31

28

26

26

28

28

26

24

23

22.

22

22

22

24

36

38

30

*26

26

25 

25

944

30.5

1.12

1.29

1,870

Sept.

25

25

25

24

22

22 

22

22

61

98

-56 114

42

36

32

30

28

26

26

27

29

26

24

26

26

44

33

32

39

46

1,088

36.3

1.33

1.48

2,160

Calendar year 1955: Max 1,190 MLn 26 Mean 190 Cfsm 6.96 In. 94.26 Ac-ft 137,200

Water year 1955-56: Max 1,610 MLn 22 Mean 216 Cfsm 7.91 In. 107.73 Ac-ft 156,800

Peak discharge (base. 1.500 cfs). Dec. 11 (8:30 p.m.) 2,060 cfs (6.92 ft); Jan. 6 (5 a.m.) 

1,840 cfs (6.47 ft).

* Discharge measurement made on this day.

Note. No gage-height record Jan. 31 to Mar. 11, July 30 to Aug. 27, Aug. 29 to Sept. 4; discharge 

estimated on basis of recorded range In stage and records for stations on nearby streams.
18 NORTH RIVER BASIN 

North River near Brooklyn, Wash.

Location.--Lat 46°46'55", long 123°28'50", in Sj sec. 18, T. 15 N., R. 6 W., on left bank 

ij- miles upstream from Fall River and l| miles northeast of Brooklyn.

Drainage area. 29.8 sq mi.

Records available. June 1953 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 190 ft (from topographic map).

Extremes. Maximum discharge during year, 2,270 cfs Dec. 11 (gage height, 7.92 ft); mini- 

 mum, 6.2 cfs Sept. 4-6 (gage height, 0.38 ft).

1953-56: Maximum discharge, that of Dec. 11, 1955; minimum, that of Sept. 4-6, 

1956.

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

No regulation. Possibly some small diversion for irrigation and domestic use.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Oct. 25 to Nov. 7)

0.3 

.4 

.5

1.0

14

24

38

56

95

1.5 

2.0 

Z.5

3.0 

4.0 

5.2

210

335

460

585

885

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

Cf sm

In.

Ac-ft

Oct.

11

IT

12.5

26

34

20

25

83

138

143

81

67

58

45

38

34

30

29

29

27

26

26

26

57

*300

272

218

248

621

^TS 3 1 O

250

3,363.5

108

3.62

4.20

6,670

Nov.

183

610

673

492

305

215

166

161

140

159

138

125

112

101

96

93

2T9" 83

480

410

295

215

198

356

600

597

594

400

278

270

8,764

292

9.80

10.94

17,380

Dec.

318

308

240

192

173

183

*176

198

180

190

1,240

898

448

300

238

198

166

154

T83

620

877

830

548

545

452

350

315

255

215

185

166

11,341

366

12.3

14.15

22,490

Jan.

166

262

450

562

783

933

538

355

272

218

190

168

171

159

278

600

569

378

312

325

285

250

*245

245

215

188

161

152

136

120

*110

9,796

316

10.6

12.23

19,430

Feb.

106

101

95

95

99

101

101

95

91

89

127

140

130

115

110

100

95

95

140

170

200

170

160

230

270

260

350

340

330

4,505

155

5.20

5.62

8,940

Mar.

450

*621

615

538

375

272

35"6 643

358

268

222

190

175

161

145

130

125

120

120

115

180

250

370

470

350

280

230

210

240

310

390

9,479

306

10.3

11.83

18,800

Apr.

350

25U

20O

170

140

120

115

105

100

92

87

*83

79

75

73

69

66

62

60

56

54

51

51

51

49

49

47

47

47

45_

2,843

94.8

3.18

3.55

5,640

May

43

42

40

42

45

38

37

34

33

35

37

37

33

29

27

26

24

23

23

23

22

22

*22

21

21

22

22

21

20

19 

tG

903

29.1

0.977

1.13

1,790

June

21

20

31

37

35

43

71

31

71

52

43

35

31

40

37

34

37

31

34

31

27

26

24

23

22

21

20

19

To" 18

-LD

1,006

33.5

1.12

1.26

2,000

July

18

17

17

18

21

21

18

16

15

*14

13.5

14

13.5

14

14

13.5

12.5

12

11

10.5

10.5

10.5

10.5

10.5

9.8

9.8

9.8

9.8

9.1 ?rr

9.8

412.7

13.3

0.446

0.52

819

Aug.

9.8

18

33

17

13.5

12.5

12

11

11

10.5

10

9.5

9

9

9

9

9

8.5

8

7.5

7

7

7

7

7.5

8

9

8.5

*7.7

7.0

7.0

319.5

10.3

0.346

0.40

634

Sept.

6.6

6.6

6.6

6.6

6.2

6.6

7.7

7.7

14

27

52

27

14

12.5

11

11

10.5

10.5

9.8

13.5

17

13.5

12

13.5

14

21

21

17

22 

29

443.4

14.8

0.497

0.55

879

Calendar year 1955: Max 1,240 Mln 7.5 Mean 131 Cfsm 4.40 In. 59.55 Ac-ft 94,650

Water year 1955-56: Max 1,240 Mln 6.2 Mean 145 Cfsm 4.87 In. 66.38 Ac-ft 105,500

Peak discharge (base. 1,OOO cfs). Oct. 29 (12:45 p.m.) 1,090 cfs (5.48 ft); Nov. 2 (8:15 p.m.) 

1,220 cfs (5.90 ft)} Dec. 11 (7 p.m.) 2,270 cfs (7.92 ft); Dec. 21 (8 p.m.) 1,190 cfs (5.02 ft); 

Jan. 6 (8 a.m.) 1,080 cfs (4.64 ft); Mar. 7 (B p.m.) 1,200 cfs (5.04 ft).

* Discharge measurement made on this day.

Hote. No gage-height record Feb. 13 to Mar. 1, Mar. 16 to Apr. 11, Aug. 11-28; discharge 

estimated on basis of records for stations on nearby streams.
NORTH RIVER BASIN 19

North River near Raymond, Wash.

Location.--Lat 46°48'30", long 123°51'00", In sec. 6, T. 15 N., R. 9 W., on left bank 

l| miles upstream from Salmon Creek and 10 miles northwest of Raymond.

Drainage area. 219 sq ml.

Records available. August 1927 to September 1956.

Gage.--Water-stage recorder. Datum of gage Is 7.39 ft above mean sea level (Western 

Washington Electric Light & Power Co. benchmark).

Average discharge.--29 years, 952 cfs (689,200 acre-ft per year).

Extremes.--Maximum discharge during year, 7,940 cfs Dec. 13 (gage height, 8.74 ft); minimum, 42 cfs Sept. 6-8 (gage height, 1.34 ft).

1927-56: Maximum discharge, 35,000 cfs Dec. 10, 1933 (gage height, 15.8 ft, from 

floodmarks), from rating curve extended above 7,500 cfs; minimum, 21 cfs Aug. 24, 

1951 (gage height, 1.01 ft).

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

Some diversion for farm and domestic use. No regulation.

Revisions (water years). WSP 792: 1934. WSP 832: 1935-36. WSP 1286: 1952.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Aug. 23 to Sept. 30)

1.2

1.3 

1.5 

1.7

2.6

40

50

76

112

156

210

278

400

615

970

1,420

2,580

3,840

5,220

7,540

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 total

Mean

Cfsm

In.

Ac-ft

Oct.

91

86

84

1T38"

140

210

229

505

1,240

1,710

1,300

1,040

880

708

555

470

400

355 

323

296

282

260

243

444

1,650

*3,190

2,680

2,410

3,740

4,900

3,940

34,469

1,112

5.08

5.85

68,370

Nov.

2,580

3,900

7,090

7.360

5,520

3,240

2,120

1,600

1,360

1,370

1,320

1,120

1,000

895

828

820

'5215

981 

2,440

3,580

3,140

2,330

1,790

2,030

3,550

4,720

4,770

4,300

3,060

2,400

82,034

2,734

12.5

13.93

162,700

Dec.

2,540

2,680

2,340

1,910

1,630

1,630

1,810

2,000

2,160

2,020

4,250

7,200

7,060

3,660

2,300

1,810

1,450

1.250 

1,330

2,640

5,370

7,250

6,640

5,220

4,860

3,930

3,160

2,570

2,030

1,630

1,380

97,690

3,151

14.4

16.59

193,800

Jan.

1,260

1,330

2,280

3,970

5,210

7,000

6,440

4,270

2,690

2,060

1,680

1,450

1,340

1,290

2,050

4,560

5,480

4,180 

3,150

3,010

2,720

2,400

*2,280

2,460

2,360

2,000

1,660

1,430

1,290

1,130

1,000

85,430

2,756

12.6

14.51

169,400

Feb.

895

828

778

750

750

757

736

722

680

648

806

1,210

1,300

1,190

1,080

932

925

910 

910

1,080

1,440

1,700

1,670

1,700

2,280

2,840

2,710

3,500

3,920

39,647

1,367

6.24

6.73

78,640

Mar.

3,970

 5,480

5.900

5,520

4,590

3,150

4,050

5,850

4,950

3,180

2,340

1,850

1,550

1,360

1,190

1,080

1,010

962 

'552" 948

1,600

2,240

3,440

4,440

3,360

2,510

2,080

1,810

2,050

2 f 580

3,350

89,352

2,882

13.2

15.17

177,200

Apr.

5,400

2,620

1,990

1,620

1,360

1,160

1,080

1,030

902

820

778

*722

667

622

591

561

516

490 

465

445

425

410

391

373

360

343

327

323

323

315

25,429

848

3.87

4.32

50,440

May

296

285

271

278

515

308

268

250

240

243

246

254

246

226

210

198

190

181 

174

171

171

166

*158

156

149

149

147

147

142

133

T33

6,501

210

0.959

1.10

12,890

June

T35~ 133

142

158

236

a300

a400

a570

a770

a900

a700

a600

aSOO

a410

a370

339

315

300 

293

278

264

246

230

217

198

190

181

171

166

156

9,871

329

1.50

1.68

19,580

July

149

144

142

144

210

210

198

164

142

 131

125

122

118

116

112

112

110

102 

97

91

86

79

78

76

75

72

70" 70

70

70

70

3,555

115

0.525

0.60

7,050

Aug.

70

86

193

210

TXS

106

88

81

70

69

63

65

63

62

62

62

60

63 

58

58

58

57

58

57

56

56

56

56

*56

55

*35

2,351

75.8

0.346

0.40

4,660

Sept.

52

50

48

45

43

*42

12

43

66

128

323

?B7

181

120

91

78

72

66 

63

72

81

75

79

91

135

151

142

158

196

233

3,223

107

0.489

0.55

6,390

Calendar year 1955 : Max 7,360 Mln 58 Mean 1,185 Cfsm 5.41 In. 73.47 Ac-ft 858,200

Water year 1955-56: Max 7,360 Mln 42 Mean 1,310 Cfsm 5.98 In. 81.43 Ac-ft 951,100

Peak discharge (base. 4.000 cfs). Oct. 30 (7:30 p.m.) 4,980 cfs (6.83 ft); Nov. 4 (5:30 a.m.)

7,800 cfs (8.66 ft 

Dec. 22 (2:30 p.m. 

5,580 cfs (7.24 ft

; Nov. 26 (1 to 6 p.m.) 4,800 cfs (6.70 ft); Dec. 13 (3 a.m.) 7,940 cfs (8.74 ft)

7,480 cfs (8.46 

; Mar. 3 (4:30 a

ft); Jan. 

.m.) 6,140

. . .. 

6 (9:30 a.m.) ) 7,080 7 cfs (8.21 ft); Jan. 17 (7:30 a.m.)

);

. .. 

140 cfs (7.61 ft); Mar. 8 (6 p.m.) 6,060 cfs (7.56 ft);

Mar. 24 (l p.m.) 4,560 cfs (6.53 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby stations.
20 CHEHALIS RIVER BASIN

Chehalis River near Doty, Wash.

Location.--Lat 46°37'00", long 123 0 16'40", in NWi sec. 14, T. 13 N., R. 5 W., on right 

tank Ij miles upstream from Elk Creek, lj miles south of Doty, and 3| miles north of

Drainage area. 113 sq mi.

Records available.--October 1939 to September 1956.

Gage.--Staff gage and crest-stage indicator; gage read twice daily. Datum of gage is 

302.1 ft above mean sea level (river-profile survey).

Average discharge.--17 years, 572 cfs (414,100 acre-ft per year).

Extremes.--Maximum discharge during year, 11,000 cfs Dec. 11 (gage height, 12.70 ft); minimum observed, 26 cfs Sept. 6, 8, 9; minimum gage height, 0.97 ft Sept. 6, 8

1939-56: Maximum discharge, 18,100 cfs Feb. 7, 1945 (gage height, 17.80'ft), water 

over gage, discharge based on observer's estimate of maximum gage height; minimum observed, 18 cfs Oct. 14, 1952; minimum gage height, 0.84 ft Aug. 25-27, Sept. 21, 22,

Revisions.--The maximum observed discharge for the water year 1946 has been revised 

to momentary maximum discharge of 8,170 cfs Dec. 28, 1945 (gage height, 10.95 ft from 

graph based on gage readings), superseding figures published in WSP 1062 and 1316.

Remarks.--Records good except those for period of shifting control, which are fair. No 

regulation or diversion above station.

Revisions (water years). WSP 1316: 1943(M).

Rating table, water year 1955-56, except period of shifting contrc 

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

2.0 

2.5

100

181

291

530

3.0 

4.0 

5.0 

6.0 

8.0 

10.0

810

1,490

2,260

3,080

5,020

7,360

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

51

Total

Mean

Cfsm

In.

Ac-ft

Oct.

58

57

57

64

259

175

175

810

2,480

1,610

918

758

591

460

371

317

263

235

212

201

181

169

157

*172

2,150

1,520

1,590

1,470

2,300

2,550

1,550

25,598

761

6.73

7.77

46,810

Nov.

1,170

2,830

6,740

6,650

2,850

1,700

1,090

822

690

679

596

555

525

505

460

562

340

816

5,770

2,250

1,500

1,200

1,540

4,280

5,420

5,250

5,940

2,480

1,670

1,520

65,940

2,151

18.9

21.04

126,800

Dec.

1,970

1,670

1,550

1,130

1,060

 1,190

1,690

1,880

1,880

1,440

5,240

6,470

2,400

1,650

1,080

894

858

840

1,170

4,220

6,230

6,520

3,580

3,170

2,670

2,550

1,910

1,430

1,110

950 

822

70,964

2,289

20.5

25.56

140,800

Jan.

756

1,520

5,390

4,680

5.450

5,420

5,050

2,200

1,390

1,180

1,090

1,110

1,220

1,060

1,960

5,110

3,120

2,510

2,200

2,300

1,970

1,690

1,530

1,560

1,130

957

786

668

580

*520

470

62,117

2,004

17.7

20.44

125,200

Feb.

415

585

555

555

522

322

309

313

304

304

500

420

591

500

430

571

558

540

358

480

540

515

455

455

465

545

668

1,800

1.840

14,775

509

4.50

4.86

29,500

Mar.

*2,930

5,850

2,940

2,550

1,490

972

1,470

1,800

1,240

918

780

640

570

555

500

495

555

752

1,050

1,060

2,590

5,090

6,890

4,160

2,690

1,960

1,600

1,460

1,620

2,070

2,970

57,977

1,870

16.5

19.08

115,000

Apr.

1,850

1,480

1,160

986

918

786

744

732

720

*792

924

912

937

912

762

684

591

515

602

696

750

646

540

480

445

420

400

385

353

509

22,411

747

6.61

7.58

44,450

May

295

275

263

255

259

259

267

244

226

226

219

205

198

178

169

169

166

160

148

138

132

*124

119

114

112

105

105

100

100

9~6

5,522

178

1.58

1.82

10,950

June

92

9?

107

151

129

169

480

353

540 4"68"

576

513

271

263

263

251

253

219

219

226

195

181

172

163

151

146

155

129

124

119

6,727

224

1.98

2.21

13,540

July

110

105

102

100

105

140

105

96

 92

87

85

79

77

79

75

75

68

62

60

58

58

58

55

52

52

50

50

49

47

46

47

2,522

74.9

0.665

0.76

4,610

Aug.

46

49

151

87

68

58

54

50

47

47

46

44

44

45

44

44

45

41

41

57

54

33

33

31

54

57

*41

45

40

56

53

1,479

47.7

0.422

0.49

2,930

Sept.

31

50

30

27

27

27

27

27

28

107

~96" 188

64

50

46

43

40

37

36

38

41

38

34

34

36

57

50

49

57

70

1,445

48.2

0.427

0.48

2,870

Calendar year 1955: Max 6,740 Min 55 Mean 779 Cfsm 6.89 In. 93.65 Ac-ft 564,200

Water year 1955-56: Max 6,89O Min 27 Mean 911 Cfsm 8.06 In. 109.69 Ac-ft 661,100

Peak discharge (base, 6,800 cfs). --Nov. 4 (time unknown) 9,270 cfs (11.51 ft); Nov. 24 (time unknown) 8,690 cfs (11.06 ft); Dec. 11 (time unknown) 11,000 cfs (12.70 ft); Dec. 21 (time unknown)

10,000 cfs (12.05 ft); Jan. 5 or 6 (time unknown) 6,880 cfs (9.6 ft); Mar. 25 (time unknown) 9,520

cfs (11.68 ft).

* Discharge measurement made on this day.

Note. --Shifting-control method used Feb. 19 to Apr. 17.
CHEHALIS RIVER BASIN 21

Newaukum River near Chehalis, Wash.

Location. --Lat 46°37'10", long 122°56'40" 

2 W. , on left bank at highway bridge Z 

stream from mouth.

on line between sees. 9 and 16, T. 13 N., R. 

miles southeast of Chehalis and 3j miles upDrainage area.--159 sq mi.

Records available .--March 1929 to September 1931, July 1942 to September 1956.

Gage. Staff gage and crest-stage indicator; gage read once or twice daily. Altitude of 

gage is 190 ft (from topographic map). Prior to Oct. 1, 1929, at datum 1.0 ft higher.

Average discharge . 16 years, 504 cfs (364,900 acre-ft per year), unadjusted.

Extremes . --Maximum discharge during year, 6,360 cfs Dec. 12 (gage height, 13.00 ft), from 

rating curve extended above 3,800 cfs by logarithmic plotting; minimum observed, 30 cfs 

Sept. 7 (gage height, 0.86 ft).

1929-31, 1942-56: Maximum discharge, 7,400 cfs Dec. 9, 1953 (gage height, 13.62 

ft), from rating curve extended above 3,800 cfs by logarithmic plotting; minimum observed, 12 cfs Sept. 13, 14, 1949; minimum gage height, 0.74 ft Sept. 12, 13, 15, 1929 

(present datum) .

Remarks . --Records good except those for period of shifting control, which are fair.

Cities of Chehalis and Centralia divert about 15 cfs for municipal use. No regulation.

Revisions (water years ) . WSP 1012 : 

1945-46(M), 1950(M).

1943. WSP1182: 1949(M) . WSP1316: 1929-31(M),

Rating tables, water year 1955-56, except period of shifting control (gage 

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

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

1.2 

2.0 

3.0

230

550

5.0 

8.0 

11.5

1,350

2,920

5,210

0.8 25

1.3 83

2.0 240

3.0 550

5.0 1,350

8.0 2,920

11.5 5,210

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

ze

27

za

29

30

31

Total

Mean

Ac- ft

Oct.

72

68

*65

88

300

188

235

550

1,400

1,700

920

684

522

363

315

261

235

210

202

195

195

175

156

166

860

1,280

1,000

996

1,700

2,220

1 , 680

19,001

613

37,690

Nov.

1,480

2,050

2,860

2,250

1,750

*1,260

928

860

712

1,460

1,140

884

676

568

487

462

445

1,420

2,620

1,750

1,350

1,260

1,220

2,100

4,440

4,060

4,580

2,320

2,000

2,120

51,512

1,717

102,200

Dec.

2,080

1,820

1,430

1,130

1,110

1,270

1,380

1,640

1,360

1,200

3,100

5,070

2,380

1,560

*1,220

1,200

972

876

1,070

3,680

3,880

4,160

2,880

2,120

1,620

1,610

1,800

1,270

1,020

1,070

720

57,698

1,861

114,400

Jan.

684

852

2,400

3,320

5,360

2,780

2,300

1,600

1,310

1,150

1,010

896

1,220

1,080

2,300

2,220

1,820

1,520

1,380

1,300

1,250

1,190

1,380

2,220

1,320

1,040

*860

736

668

585

529

46,280

1,493

91,800

Feb.

508

410

380

377

40T

536

540

606

557

554

764

1,180

1,140

924

712

568

498

480

515

700

1,070

1,000

812

756

1,150

1,130

1,060

1,170

1,540

21,844

753

43,350

Mar.

1,320

1,940

2,150

2,350

1,440

1,160

1,300

1,560

1,190

*988

796

708

752

756

720

704

700

764

868

868

1,130

1,380

2,980

2,700

2,730

2,460

1,860

1,600

1,680

1,590

1,630

44,774

1,444

88,810

Apr.

1,430

1,120

1,020

884

800

676

700

620

*568

568

578

540

518

522

501

431

389

368

368

386

417

383

341

311

290

275

265

270

280

255

16,074

536

31,880

May

240

222

218

235

305

235

212

208

202

218

215

208

180

170

165

165

175

185

190

172

*156

142

138

133

129

127

138

124

112

110

118

5,547

179

11,000

June

120

116

120

116

160

180

200

172

210

258

320 ??8"

195

182

200

215

232

180

272

320

260

222

210

165

144

142

133

124

116

112_

5,624

187

11,160

July

110

104

97

104

108

140

124

102

100

90

86

*86

82

80

80

71

68

65

63

58

55

55

53

52

50

51

48

47

46

46

46

2,367

76.4

4,690

Aug.

47

63

118

78

65

55

52

48

51

51

50

47

43

42

45

45

44

39

39

33

33

34

32

37

38

59

60

55

43

43

42

1,531

49.4

3,040

Sept.

38

36

36

34

34

31

30

3?

37

65

60

58

*50

42

40

40 1

38

38

45

56

53

43

38

38

51

48

83

82

80

102

1,458

48.6

2,890

Calendar year 1955: Max 5,070 Mln 34 Mean 710 Ac-ft 514,200

Water ;er year year 1955-56 j.yt)5-5b: : nax Max o,u/u 5,070 Mln rain 30 ou Mean nean 748 /*o Ac-ft AC-IC 542,900 o*c,yuu

eak discharge (base, 4.000 cfs).--Nov. 25 (about 3:30 a.m.) 5,940 cfs (12.48 ft)} Dec. 12 (about 

.m.) 6,360 cfs (13.00 ft); Dec! 2o (about 7:30 p.m.) 5,550 cfs (11.99 ft); Jan. 4 (about 9 p.m.) 

4,030'cfs 30 cfs (9.82 ft).

* Discharge measurement made on this day. 

Note.--Shifting-control method used Apr. 2-17.
CHEHALIS RIVER BASIN

Skookumchuck River near Centralia, Wash.

Location.--Lat 46°47'15", long 122°42'45", in SW^NW^ sec. 17, T. 15 N., R. 1 E., on left 

bank half a mile upstream from Bloody Run Creek, 4^ miles upstream from Thompson Creek, 

and 12 miles northeast of Centralia.

Drainage area. 60.8 sq mi.

Records available.--April 1929 to November 1933, October 1939 to September 1956. Monthly 

discharge only for some periods, published in WSP 1316.

Gage.--Water-stage recorder. Datum of gage is 300.00 ft above mean sea level (riverprofile survey). Apr. 1, 1929, to Dec. 6, 1933, staff gage at site a quarter of a mile 

downstream at different datum. Oct. 9 to Nov. 29, 1939, staff gage at present site and 

datum.

Average discharge.--21 years, 248 cfs (179,500 acre-ft per year).

Extremes.--Maximum discharge during year, 6,230 cfs Dec. 11 (gage height, 48.19 ft); minimum, 28 cfs Sept. 6, 7 (gage height, 39.35 ft).

1929-33, 1939-56: Maximum discharge, 6,710 cfs Dec. 9, 1953 (gage height, 48.59 

ft); minimum, 15.5 cfs Nov. 28, 29, 1952 (gage height, 39.22 ft).

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

No regulation or diversion above station.

Revisions (water years^.--WSP 722: 1929-30. WSP 1246: Drainage area. WSP 1286: 1930,

1945.

Rating tab les

Oct. l

39. 

39, 

40. 

40. 

40. 

41.

,7 

.9 

,1 

.3 

.6 

,0

37 

66 

106 

157 

270 

450

, water

to Dec.

41. 

42. 

43. 

44. 

45.

year 

In

5

0 

0 

0 

0

11

i

. 2 

3

195! 

cub:

700 

950 

,550 

,250 

,000

Dec. 12 to Sept. 30

39.3

39.4

39.6

39.8

40.0

40.2

40.5

25

32

51

83

130

188

290

41.0

41.5

42.0

43.0

44.0

45.0

500

740

990

1,550

2,250

3,000

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

Cfsm

In.

Ac-ft

Oct.

45

44

45

144

195

123

135

3ZZ

1,040 

872

490

328

238

195

166

152

135

125

118

111

104

98

93

108

533

585

460

460

840

895

*675

9,874

319

5.25

6.04

19,580

Nov.

525

851

1,250

1,230

900

625

450

369

329 

423

369

310

261

218

210

185

179

555

930

645

495

396

446

1,050

2,240

1,900

1,750

1,060

795

755

21,451

715

11.8

13.12

42,550

Dec.

850

725

590

465

418

471

590

615

615 

520

2^,660

2,470

1,010

680

505

*414

348

301

497

2,540

2,190

2,170

1,400

950

820

805

755

588

463

332

28,142

908

14.9

17.21

55,820

Jan.

332

401

1,140

1,790

1,540

1,320

975

680

546 

463

419

393

509

500

845

1,150

980

710

612

636

565

555

612

593

486

410

*344

301

265

244

220

20,536

662

10.9

12.56

40, 730

Feb.

210

194

188

185

198

201

227

234

220 

206

253

495

410

328

270

230

210

220

290

390

450

410

390

460

620

600

580

650

700

10,020

346

5.69

6.13

19,870

Mar.

850

950

700

580

500

450

510

410

350 

*29B

258

240

223

217

22T

234

254

298

381

406

618

918

2,270

1,670

1,600

1,260

840

656

785

835

880

20,668

667

11.0

12.64

40,990

Apr.

5So~ 700

463

445

410

368

397

381

*364 

381

*428

432

445

454

432

376

320

294

317

393

450

410

332

279

258

251

247

244

237

207

11,275

376

6.18

6.90

22,360

May

191

179

176

185

207

188

185

185

188 

198

185

164

138

128

125

144

179

191

182

158

*127

112

112

108

98

98

98

85

83 

85

92

4,574

148

2.43

2.80

9,070

June

85

79

79

85

94

110

122

118

158 

207

198

150

*120

112

112

108

115

105

167

179

150

125

115

103

92

85

81

76

70

69

3,469

116

1.91

2.12

6,880

July

65

64

62

59

65

70

m

55

54 

52

51

*50

49

49

48

46

43

42

41

40

40

40

39

38

38

38

38

37

36- 36 

36

1,480

47.7

0.785

0.91

2,940

Aug.

37

48

64

4T

38

38

37

35

34 

34

34

34

33

33

33

33

33

32

32

3_i

31

31

31

31

31

39

34

32

31

31

31

1,088

35.1

0.577

0.67

2,160

Sept.

31

30

30

30

29_

29

29

29

31 

36

38

34

*32

32

31

32

31

31

31

32

35

32

31

31

33

36

41

34

37

52

990

33.0

0.543

0.61

1,960

Calendar year 1955: Max 2,660 Mln 32 Mean 347 Cfsm 5.71 In. 77.39 Ac-ft 250,900

Water year ' 1955-56: 1955-56: Max Max 2,660 2,660 Mln Mln 29 29 Mean Mean 365 365 Cfsm Cfsm 6.00 6.00In. In. 81.71 81.71 Ac Ac-ft -ft 264.9OO 264,900

charge (base, 2,000 efs).--Nov. 24 (11:30 p.m.) 2,680 cfs (44.60 ft): Dec. 11 (7:45 p.m.) 

(48.19 ft); Dec. 20 (3:45 p.m.) 3,660 cfs (45.73 ft)j Jan. 4 (9 p.m.) 2,310 cfs (44.08 ft); 

. p.m.) 3,010 cfs (45.01 ft).

Peak dlseharg 

6,230 cfs

Mar. 23 (5 p.m./ j, \J-L\J uio i^o.wj. 11*;.

* Discharge measurement made on this day.

Note. No gage-height record Feb. 15 to Mar. 9;

stage and records for stations on nearby streams.

discharge estimated on basis of recorded range In
CHEHALIS RIVER BASIN 23

Chehalis River near Grand Mound, Wash.

Location. Lat 46°46'35", long 123°02'05", in ME£ sec. 22, T. 15 N., R. 3 W., on left bank 

at downstream side of highway bridge at Meadows, 1? miles southwest of Grand Mound and 

6 miles downstream from Skookumchuck River.

Drainage area. --895 sq mi.

Records available. --October 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 123.27 ft above mean sea level, datum of 

~1929. Prior to Oct. 3, 1934, staff gage at same site at datum 3.0 ft higher.

Average discharge. --28 years, 2,774 cfs (2,008,000 acre-ft per year).

Extremes . --Maximum discharge during year, 35,100 cfs Dec. 22 (gage height, 16.58 ft); minimum, 140 cfs Sept. 7 (gage height, 1.00 ft).

1928-56: Maximum discharge, 48,400 cfs Dec. 29, 1937 (gage height, 18.39 ft); minimum, 90 cfs Aug. 23-26, 1951; minimum gage height, that of Sept. 7, 1956.

Remarks. --Records excellent. Many small diversions for irrigation and domestic use above 

station, including about 15 cfs for municipal water supply for Centralia and Chehalis. 

No regulation.

Revisions (water years). --WSP 1216: 

1932-34 (MJ .

Drainage area. WSP 1286 : 1929-30(M), 1931,

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

In cubic feet per second)

Oct. 10 to Sept. 30

1.5 

1.7 

3.0 

2.5 

3.0

355

335

470

730

1,040

3.5 1,410

4.0 1,840

6.0 4,140

7.0 5,560

1.0 

1.3 

1.5 

2.0 

3.5 

3.0 

3.5

140

190

285

480

730

1,040

1,410

1,840

4,110

6,900

10,400

14,800

21,000

32,400

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

Cfsm

In.

Ac -ft

Oct.

307

291

383

323

745

904

700

1,000

5,070

7,080

4,810

3,170

2,400

1,870

1,510

1,240

1,080

970 

904

850

790

736

682

665

1,540

6,150

5,100

4,890

5,380

 9)450

81,670

2,635

2.94

3.39

163,000

Nov.

7,880

7,130

14,700

18,100

19,200

14,200

9,070

6,210

4,800

4,700

4,450

3,740

3,120

2,640

2,200

2,170

1,980

9' 180

13,000

10, 600

7,960

6,690

8,190

14,900

19,700

22,400

21,700

16,200

12,000

290,900

9,697

10.8

12.09

577,000

Dec.

11,300

*1 1,000

9,300

7,320

5,960

6,330

8,780

8,840

9,660

8,240

9,290

21,900

24,300

15,400

9,920

7,400

5,830

4,790 

5,160

10,300

22,500

52,000

3 1 , 500

22,300

17,800

14,800

13,000

10,600

7,850

6,150

4,960

384,480

12,400

13.9

15.98

762,600

Jan.

4,460

4,890

9,680

15,300

19,100

21,700

22,200

17,300

12,000

8,620

6,700

5,640

5,710

5,780

9,280

13,800

16, 200

14,000 

11,100

10, 200

9,120

7,950

7,550

9,050

8,510

6,880

5,580

4,600

4,060

3,540

3.020

303,520

9,791

10.9

12.61

602,000

Feb.

2,630

2,420

2,260

2,140

2,150

*2,250

2,330

2,470

2,370

2,220

2,300

3,430

4,500

4,180

3,610

2,900

2,730

2,560 

2,580

3,310

4,550

5,380

4,600

4,490

6,080

7,260

6,870

7,370

*9,230

111,050

3,829

4.28

4.61

220,300

Mar.

8,530

11,700

13,900

15,500

14,200

10,100

7,770

10,800

9,950

7,900

6,210

5,060

4,410

4,120

3,810

3,650

5,590

3,770 

4,270

4,500

5,450

8,510

11,400

17,300

17,500

16,000

15, 300

10, 100

*8,800

8,750 

10,200

380,850

9,060

10.1

11.67

557,100

Apr.

9.970

8, 140

6,540

5,440

4,950

4,390

5,930

3,860

5,510

5,560

5,470

3,440

5,500

5,270

5,090

2,790

3,500

2,250 

2,140

2,340

2,420

2,370

2,080

1,860

1,690

1,590

1,520

1,460

1,460

1.370

100,280

3,343

3.74

4.17

198,900

May

1,340

1,160

,080

,100

,230

,170

,050

,050

984

970

1,000

964

916

844

784

760

760

772 

784

743

694

640

600

590

575

561

575

*561

512

489 

480

35,607

, 826

0.935

1.06

50,790

June

494

494

530

670

713

694

814

1,050

1,030

1,270

1,450

1,140

940

874

940

892

874

858 

852

1,040

964

844

754

694

650

595

561

530

498

489

24,097

805

0.897

1.00

47 , 800

July

476

*455

440

451

451

480

507

451

395

359

555

544

*541

550

550

524

506

288 

264

254

247

255

358

229

230

317

214

211

211

208 

5TT

9,980

532

0.560

0.41

19,800

Aug.

305

317

354

535

587

510

264

247

241

226

335

317

214

311

199

205

205

199

190

185

182

175

168

165

170

188

225

252

305

*178

7,078

228

0.255

0.29

14,040

Sept.

173

158

155

155

158

145

142

145

148

180

534

494

575

388

254

226

333

223 

211

211

323

353

326

214

214

226

247

299

*285 

510

6,865

229

0.256

0.29

15,610

Calendar year 1955: Max 32,000 Mln 160 Mean 4,003 Cfsm 4.47 In. 60.71 Ac-ft 2,898,000

Water year 1955-56: Max 32,000 Mln 142 Mean 4,444 Cfsm 4.97 In. 67.57 Ac-ft 3,236,000

Peak discharge (base, 15,000 cfs). --Nov. 5 (7 to 8 a.m.) 19.900 cfs (13.69 ft): Nov. 20 (5 a.m.)

(12 p.m.) 38,700 cfs (15.6 

,100 cfs (14.55 ft); Jan. 17 (12 m. )

13.600 cfs (11752 ft 

ft); Dec. 22 (9 

16,500 cfs (12 

(13.26 ft).

* Discharge measurement made on this day.

1752 ftl; Nov.

(9 p.m.) 35,10

.60 ft); Mar.

27 (12 p.m.) 24,000 cfs (14.76 ft); Dec. 12 (12 p.m.) 38,700 cfs (15.64 

100 cfs (16.58 ft); Jan 7 (7 a.m.) 23,100 cfs (14.55 ft); Jan. 17 (12 m.) 

r. 4 (6 to 7 p.m.) 15,900 cfs (12.41 ft); Mar. 24 (7 to 10 p.m.) 18,500 cfs

467240 O - 58 -3
24 CHEHALIS RIVER BASIN

Rock Creek at Cedarville, Wash.

Location. Lat 46°52<05", long 123°18'25", in SW£sw£ sec. 15, T. 16 N., R. 5 W., on left 

bank 0.2 mile downstream from Williams Creek, 1 mile west of Cedarville, and l£ miles 

upstream from mouth.

Drainage area. 24.8 sq mi.

Records available. July to October 1942, July to October 1943, June 1944 to September 

1956.October 1942 monthly discharge only, published in WSP 1316.

Gage. Water-stage recorder. Altitude of gage is 70 ft (from topographic map). Prior to 

Sug. 17, 1944, staff gage at railroad bridge three-quarters of a mile downstream at different datum.

Average discharge. 12 years (1944-56), 88.1 cfs (63,780 acre-ft per year).

Extremes. Maximum discharge during year, 1,220 cfs Dec. 11 (gage height, 12.01 ft); minimum, 1.1 cfs Sept. 6-10 (gage height, 2.28 ft).

1942-56: Maximum discharge, 1,660 cfs Feb. 9, 1951 (gage height, 13.77 ft), from 

rating curve extended above 860 cfs; minimum, 0.3 cfs Sept. 25, 1946.

Remarks.--Records good. No regulation. Some diversion for irrigation. 

Revisions (water years). WSP 982: 1942. WSP 1092: 1945-46(M).

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

in cubic feet per second) 

(Shifbing-control method used Mar. 1O-12)

2.3

2.4

2.5

2.6 

2.8 

3.0

Oct. 1 to Dec

1.8

3.0

4.5

6.4

12.5

22

Dec. 12 to Sept. 3O

3.3 

3.6 

4.0 

5.0 

7.0 

9.3

42

70

116

237

500

822

2.3

2.4

2.5

2.6 

2.8 

3.0

1.2 

2.1 

3.5 

5.4

3.3 

3.6 

4.0 

5.0 

7.0 

9.2

44

73

117

237

500

808

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

33

Ibtal

Mean

Cf sin

In.

Ac-ft

Oct.

3.0

2.9

375

4.5

8.7

7.6

*7.9

32

92

99

55

49

40

34

29

25

22

19

18.5

17.5

15.5

15

14.5

24

202

263

184

192

450 430" 

259

2,618.6

84.5

3.41

3.93

5,190

Nov.

193

418

817

695

386

241

*175

145

123

128

112

102

91

82

73

70

66

120

449

436

311

220

192

303

627

595

560

377

249

210

8,566

286

11.5

12.85

16,990

Dec.

246

240

199

163

146

172

223

213

192

186

678

797

375

238

188

154

*131

115

111

419

744

744

469

414

367

272

235

195

163

137

115

9,036

291

11.7

13.55

17,920

Jan.

109

131

308

503

644

665

427

263

196

155

131

112

107

113

282

544

458

301

254

253

214

184

187

207

184

158

130

116

98

84

74_

7,592

245

9.88

11.38

15,060

Feb.

67

62

58

56

57

57

*59

59

56

5_4

80

128

139

130

110

96

88

78

77

92

111

134

125

137

241

259

235

280

27¥

3,401

117

4.72

5.10

6,750

Mar.

341

557

469

427

315

221

345

510

323

247

*202

171

148

131

121

116

113

113

113

115

149

188

439

406

255

205

177

167

175

221

318

7,798

252

10.2

11.69

15,470

Apr.

302

??3

175

145

119

102

96

83

76

71

66

61

*58

54

51

48

46

43

41

40

37

35

34

33

31

30

29

29

28

!§

2,212

73.7

2.97

3.32

4,390

May

24

57

22

22

22

22

21

20

18.5

18.5

18.5

18.5

18

16.5

16

14.5

13.5

13.5

13

13

12

11

11

10.5

10

9.7

9.7

9.7

8.8

8.5

BTs

478.4

15.4

0.621

0.72

949

June

8.5

8.5

*11

15.5

13.5

13.5

20

22

31

26

20

17

12

16.5

18.5

16

15.5

14

14

14

12

11

10

9.4

8.8

8.2

7.9

7.3

6.3

6.3

414.2

13.8

0.556

0.62

822

July

6.6

FT3

6.3

6.3

6.3

6.3

6.3

6.0

5.6

5.2

4.8

4.8

4.6

4.2

4.2

4.2

3.6

3.4

3.0

2.9

2.8

2.6

*2.5

2.4

2.1

2.1

2.1

1.9

1.9

1.9

1.9

125.1

4.04

0.163

0.19

248

Aug.

1.8

3.6

"8.8 14

6.0

4.6

3.6

3.4

3.0

2.9

.8

.6

.4

.4

.4

.4

.4

.4

.1

.0

.9

.8

.7

.7

.7

.7

.7

.7

.7

.6 "T 5*

1 b

94.4

3.05

0.123

0.14

187

Sept.

1.5

1.4

1.4

1.4

1.2

1.1

T7T

1.1

1. 1

2.8

12.5

10

5.8

*4.4

3.8

3.2

3.0

2.9

2.9

2.9

3.4

3.2

3.2

3.5

4.6

6.6

8.5

9.7

9.7

1§

133.9

4.46

0.180

0.20

266

Calendar year 1955: Max 817 Min 2.4 Mean 104 Cfsm 4.19 In. 56.93 Ac-ft 75,300

Water year 1955-56: Max 817 Min 1.1 Mean 116 Cfara 4.68 In. 63.69 Ac-ft 84,240

Peak discharge (base. BOO cfs).--Nov. 3 (l a.m.) 1,060 cfs (10.90 ft); Dec. 11 (11:30 p.m.) 1,220 

cfs (12.01 ft); Dec. 21 (12 p.m.) 964 cfs (1O.29 ft). 

* Discharge measurement made on this day.
CHEHALIS RIVER BASIN 25

Chehalis River at Porter, Wash.

Location.--Lat 46°56'20", long 123°18'45", on line between sees. 21 and 28, T. 17 N.,

R. 5 W., In upstream end of right bank pier of Chehalls River bridge at mouth of Porter 

Creek, 700 ft west of Porter.

Drainage area. 1,300 sq ml, approximately.

Records available. January 1952 to September 1956.

Gage.--Water-stage recorder. Altitude of gage Is 25 ft (from topographic map).

Extremes.--Maximum discharge during year, 30,200 cfs Dec. 23 (gage height, 22.04 ft); minimum, 222 cfs Sept. 8, 9, (gage height, 2.89 ft).

1952-56: Maximum discharge, 31,700 cfs Jan. 7, 1954 (gage height, 22.27 ft); minimum, 164 cfs Oct. 17, 1952 (gage height, 2.25 ft).

Remarks. Records excellent except those above 15,000 cfs, which are good. Cities of 

Centralia and Chehalis divert about 15 cfs from Newaukum River, a tributary, for municipal use. Other small diversions for irrigation and domestic use. No regulation.

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

In cubic feet per second)

Oct. 1 to Nov. 4 Nov. 5 to Sept. 3O

3.O 

3.5 

4.O 

5.0 

6.O

395

565

775

1,310

1,980

8.0

10.0

13.0

16.0

19.0

3,670

5,77O

9,700

14.8OO

21,600

2.9 

3.4 

4.0 

5.0 

6.0 

8.0

225

414

680

1,2OO

1,850

3,500

1O.O 

13.0 

16.0 

19.0 

22.0

5,500

9,300

14,400

21,000

30,000

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

Cfsm

In.

Ac-ft

Oct.

436 

413

407

4?5

530

1,040

925

1,060

3,380

 7.O60

6,300

4,100

3,16O

2,550

2,100

1,770

1,510 

1,360

1,240

1,150

1,080

1,010

945

1,020

1,820

5,570

6,570

6,000

7,610

11,300

12, 800

96,641

3,117

2.40

2.76

191,700

Nov.

1O,9OO 

10.7OO

16,3OO

20,400

2O,9OO

20,800

 18,700

11,500

7,710

6,6OO

6,450

5,560

4,790

4,130

3,490

3,160

5. OOP 

3,250

7,540

14,800

15,700

12,700

9,810

10,200

15,100

19,800

22,900

24.100

23,500

20,300

374,770

12,490

9.61

10.72

743,300

Dec.

16,900 

15,800

14,40O

11,800

9,350

8,790

10,400

12,000

12,200

12,100

13,400

19,600

23,400

24,100

2O.OOO

 13,300

9,780 

7,660

6,940

10, 300

2O.300

25.8OO

29.700

28,600

24,800

22, ZOO

19,500

17,000

13,600

10,500

7,990

492,310

15,880

12.2

14.08

976,500

Jan.

6,880 

7,070

10,5OO

16,700

21,2OO

23,800

24,600

23,900

20,9OO

15,7OO

11,700

9,180

8,130

8,270

10,300

16,200

19,300 

19,900

18,000

15,500

14,100

12,600

11,500

11,900

12,600

11,000

8,860

7,400

6,490

5,710

5,080

414,970

13,390

10.3

11.87

823,100

Feb.

4,520 

4,130

3,860

3,630

3,520

3,570

 3,610

3,670

3,610

5,460

3,520

4,270

5,580

5,660

5,140

4,440

4,030 

3,820

3,660

4,120

5,070

6,380

6,230

5,800

7,010

9,180

9,360

9,480

11.100

151,430

5,222

4.02

4.33

300,400

Mar.

12,100 

14,100

17,OOO

18.6OO

19,000

17,000

13.7OO

14,600

15,300

13,100

 10,3OO

8,160

6,940

6,250

5,780

5,430

5,250 

5,290

5,590

6,050

6,600

9,180

13,200

17,100

19,600

19,900

18,400

15,700

12,900

12,200

12,900

377,220

12,170

9.36

10.79

748,200

Apr.

15,70O 

12,200

9,910

8,100

7,010

6,31O

5,700

5,4OO

5,080

4,740

4,640

4,630

*4,42O

4,26O

4,12O

3,830

3,510 

3,220

3,03O

3.0OO

3,09O

3,14O

2,920

2,700

2,510

2,390

2,300

2,230

2,180

2,130

142,400

4,747

3.65

4.07

282,400

May

2,000 

1,880

1,790

1,770

1,830

1,880

1,740

1,670

1,610

1,580

1,590

1,580

1,510

1,430

1,340

1,280

1,250 

1,250

1,270

1,250

1,200

1,120

1,060

1,020

1,OOO

995

990

985

945

895

875

42,585

1,374

1.06

1.22

84,470

June

880 

880

 1,O2O

1,060

1,180

1,160

1,320

1,520

1,580

1,740

1.870

1,790

1,49O

1,450

1,480

1,450

1,35O 

1,320

1,36O

1,420

1,45O

1,310

1,190

1,100

1,030

960

915

855

825

795

37,750

1,258

0.968

1.08

74,880

July

78O 

765

740

730

75O

77O

815

76T5

68O

633

605

596

582

578

564

546

529 

498

468

451

430

422

 414

402

386

»374

362

358

351

347

545

17,029

549

0.422

0.49

55,780

Aug.

559 

566

502

628

656

542

459

414

582

570

558

547

555

551

527

524

52O 

512

295

286

271

264

256

~25Z 255

256

271

505

512 

278

264

10,874

551

0.270

0.51

21,570

Sept.

256 

255

259

252

228

225

255

225

252

271

582

542

610

*494

414

578

554 

545

555

555

559

559

547

559

559

554

578

586

447 

489

10,550

544

0.265

0.50

20,490

Calendar year 1955 : Max 29,700 Mln 285 Mean 5,287 Cfsm 4.07 In. 55.20 Ac-ft 3,828,000

Water year 1955-56 : Max 29,700 Mln 225 Mean 5,924 Cfsm 4.56 In. 62.02 Ac-ft 4,301,000

Peak discharge (base. 20,000 cfs).--Nov. 6 (7 p.m.) 21,200 cfs (19.06 ft); Nov. 28 (12 p.m.) 

24,500 cfs (20728 ft); Dec. 14 (2 a.m.) 25,400 cfs (20.57 ft); Dec. 25 (5 to 6 p.m.) 5O,200 cfs 

(22.04 ft); Jan. 7 (7:50 a.m.) 24,6OO cfs (20.52 ft); Jan. 17 (4:40 a.m.) 20,200 cfs (18.67 ft); 

Mar. 25 (11:50 p.m.) 20,400 cfs (18.75 ft).

 Discharge measurement made on this day.
26 CHEHALIS RIVER BASIN

Cloquallum River at Elma, Wash.

Location. Lat 47°00'20", long 123 0 23'10", in SjNWij sec. 36, T. 18 N., R. 6 W., on right 

bank 10 ft downstream from bridge, half a mile east of Elma, and 1.8 miles downstream 

from Wildcat Creek.

Drainage area. 65.8 sq mi.

Records available. July 1942 to October 1943 (fragmentary), July 1944 to September 1956. 

Published as Cloquallum Creek at Elma 1942.

Gage. Water-stage recorder. Altitude of gage is 20 ft (from topographic map). Prior to

Tug. 7, 1944, staff gage at site 350 ft downstream at datum 0.42 ft lower. Aug. 7,

1944, to Sept. 1, 1953, water-stage recorder at site 200 ft upstream at same datum.

Average discharge.--12 years (1944-56), 264 cfs (191,100 acre-ft per year).

Extremes. Maximum discharge during year, 3,400 cfs Dec. 11 (gage height, 9.61 ft); minimum, 23 cfs Sept. 5-7; minimum gage height, 1.83 ft Oct. 2.

1942-56: Maximum discharge, 4,470 cfs Feb. 9, 1951 (gage height, 11.04 ft); minimum, 6.8 cfs Sept. 15, 1945 (gage height, 1.43 ft).

Remarks.--Records good. Several small diversions on minor tributaries above station and 

some regulation by log pond on Wildcat Creek.

Revlsions.--WSP 1246: Drainage area.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

1.7

1.8

1.9 

2.1 

2.3 

2.5 

3.0

13

24

36

64

101

145

270

3.5 

4.0 

5.O 

6.0 

7.0 

8.5

405

555

9OO

1,330

1,810

2,66O

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

Day

1

2

3 

4

5

6

7

8

9

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.

25

25

26 

64

88

*52

52

135

411

338

220

250

190

150

124

105

93

86

80

75

73

69

66

269

922

856

668

748

1,370 

1,320

769

9,719

314

4.77

5.49

19,280

Nov.

564

1,260

2,610 

2,070

1,230

797

*579

504

474

510

420

357

312

278

240

230

218

4T50

956

996

738

561

54O

812

1,290

1,280

1,210

928

748 

772

23,934

798

12.1

13.53

47,470

Dec.

*900

839

674 

558

564

682

643

688

678

747

2,230

2.420

1.S40

892

699

594

5O4

444

483

1,040

1,700

2,150

1,700

1,390

1,070

860

762

606

528 

468

417

29,270

944

14.3

16.54

58,060

Jan.

414

463

762 

1,310

1,530

1,610

1,100

783

640

534

474

429

435

417

760

1,450

1,210

912

822

825

710

682

720

758

650

558

486

435

390 

340

^°°.

22,922

739

11.2

12.96

45,470

Feb.

282

262

*25O 

242

245

230

218

200

190

185

268

272

255

235

215

195

2OO

195

210

27O

3OO

330

315

375

501

504

543

SZ6~ 657

8,770

302

4.59

4.96

17,400

Mar.

994

1,420

1,260 

1,210

9OO

692

1,120

1,300

904

699

576

507

465

42O

*381

357

342

338

33O

357

522

626

1,210

1,050

769

668

567

564

643 

794

916

22,901

739

11.2

12.94

45,420

Apr.

'6T5" 766

522 

465

396

351

366

315

285

268

250

235

22O

210

2OO

188

182

172

165

155

150

143

*14O

138

134

129

124

122

120 

118

7,644

255

3.88

4.32

15,160

May

114

112

107 

114

151

116

107

101

97

97

97

95

95

90

88

86

80

77

78

80

77

73

73

71

69

73

73

68

66 

"2TT 64 

bo

2,735

88.2

1.34

1.55

5,42O

June

68

66

85

103

95

105

168

*152

210

145

122

105

97

112

116

103

95

88

109

95

88

82

78

75

73

69

66

64

61 

ST

2,959

98.6

1.50

1.67

5,870

July

61

58

58 

58

.§0.

75

62

56

54

52

5O

49

48

49

48

46

*45

42

41

40

40

39

39

37

39

37

36

36

35 

3T

35

1,480

47.7

O.725

0.84

2,940

Aug.

35

50

77 

43

39

36

35

34

32

32

32

31

31

32

35

34

32

30

30

30

29

28

28

30

29

29

28

26

26 

26

!§

1,036

33.4

0.508

0.59

2,O50

Sept.

25

24

25 

24

24

23

2*

24

30

42

69

*48

37

34

32

32

31

31

30

31

32

30

29

35

45

56

49

44

59

73

1,092

36,4

0.553

0.62

2,170

Calendar year 1955: Max 2.61O Min 21 Mean 326 Cfsm 4.95 In. 67.25 Ac-ft 236, OOO

Water year 1955-56: Max 2.61O Min 23 Mean 367 Cfsm 5.58 In. 76.01 Ac-ft 266,700

Peak discharge (base. 1.5OO efs). Oct. 29 (6 p.m.) 2,110 cfs (7.56 ft): Nov. 3 (2:15 a.m.) 3,120 

cfs (9.21 ft); Dec. 11 (16:30 p.m.) 3.4OO cfs (9.61 ft); Dec. 21 (11 p.m.) 2.35O cfs (7.99 ft); 

Jan. 6 (7:45 a.m.) 1,780 cfs (6.93 ft): Jan. 16 (3:45 p.m.) 1,720 cfs (6.81 ft); Mar. 2 (2 a.m.) 

1,700 efs (6.78 ft); Mar. 7 (8:3O p.m.) 1,82O cfs (7.O2 ft).

* Discharge measurement made on this day.
CHEHALIS RIVER BASIN 27

Satsop River near Satsop, Wash.

Location.--Lat 47°00'05", long 123°29 I 40", in sec. 36, T. 18 N., R. 7 W., in west pier of 

bridge on U. S. Highway 410, three-quarters of a mile west of Satsop and 2 miles upstream from mouth.

Drainage area. 290 sq mi, approximately. 

Records available.--March 1929 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level, datum of 1929. Prior to 

"Jfar. 19, 1938, staff gage at site 60 ft downstream at datum 20.9 ft higher.

Average discharge.--27 years, 1,963 cfs (1,421,000 acre-ft per year).

Extremes.--Maximum discharge during year, 27,800 cfs Nov. 3 (elevation, 35.14 ft); minimum, 

236 cfs Sept. 5-9 (elevation, 23.34 ft).

1929-56: Maximum discharge, 46,600 cfs Jan. 22, 1935 (elevation, 38.9 ft, from floodmarks); minimum, 166 cfs Sept. 21, 1938; minimum elevation, 21.66 ft, present datum, 

Sept. 3-6, 1934.

Flood in November 1909 reached a stage of 37.1 ft at railroad bridge 300 ft downstream from high-water mark.

Remarks.--Records good. No regulation or diversion above station.

Revisions (water years). WSP 1246: Drainage area. WSP 1286: 1930-35(M), 1937(M).

Rating tables, water year 1955-56 (elevation. In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Nov. 2 Nov. 3 to Sept. 30

23.9

24.1

24.3

24.6

25.0

250

395

550

810

1,230

25.5

26.0

27.0

28.0

£9.0

1,870

2,600

4,320

6,370

8,740

23.3

£3.5

23.8

24.1

24.5

£5.0

25.5

26.0

2£1

300

450

640

950

1,500

2,150

2,850

27.0

28.0

29.0

30.0

31.0

3£.5

35.0

4,500

6,500

8,740

11,300

14,100

18,400

27,200

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

£8

29

30

31

Total

Mean

Cfsm

In.

Ac-ftj

Oct.

299

292

306

502

910

598

558

1,590

3,910

*3,880

2,450

2,630

2,110

1,590

1,240

1,060

940

840

774

711

657

630

606

1,690

8.570

6,550

4,920

6,000

7,960

7,780

4,840

77,193

2,490

8.59

9.90

153,100

Nov.

3,590

6,590

25.400

20,400

9,860

6,420

*4,730

3,950

3,440

3,260

2,880

2,600

2,320

2,110

1,920

1,800

1.700 

2,190

4,450

4,370

3,830

3,210

3,500

5,930

10,900

9,040

7,680

6,420

5,530

5,330

175,350

5,845

20.2

22.49

347,800

Dec.

»6,060

5,450

4,410

3,680

3,410

3,920

4,690

4,840

4,800

4,610

10,500

12.500

6,920

4,940

3,970

3,410

2,940 

2.680

2,820

4,740

8,860

10,700

8,480

7,130

6,290

6,040

5,090

4,180

3,550

3,150

2,770

167,530

5,404

18.6

21.48

332,300

Jan.

2,670

2,850

3,680

6,230

7,260

9,780

6,920

5,110

4,230

3,650

3,490

3,920

3,870

3,580

4,600

11,800

9,010 

7,150

6,580

6,420

5,430

5,330

5,270

5,010

4,270

3,680

3,210

2,860

2,580

2,370

2 . 140

154,950

4,998

17.2

19.87

307,300

Feb.

1,960

1,820

1,700

1,600

1,600

1,500

*1,410

1,330

1,270

1.250

1,640

1,880

1,800

1,660

1,490

1,360

1,330 

1,260

1,300

1,500

1,710

1,810

1,800

1,900

2,220

2,330

2,430

4,080

4_.5gO

53,460

1,843

6.36

6.86

106,000

Mar.

6,850

9,880

8,820

6,580

4,900

3,780

4,320

4,670

3,820

3,230

2,810

2,530

2,360

2,210

2,110

*2,030

2.020 

2,150

2,540

2,810

4,240

7,690

11,600

9,260

5,930

5,190

4,250

4,020

5,730

7,110

6,900

152,340

4,914

16.9

19.54

302,200

Apr.

5.510

4,230

3,580

3,290

3,120

2,770

2,650

2,460

2,300

2,290

2,540

2,570

2,630

2,740

2,470

2,190

1,970 

1,820

1,900

2,100

2,280

2,140

1,890

1,730

1,640

1,590

1,530

1,410

1,300

1,210

71,650

2,388

8.23

9.19

142 , 100

Hay

*1.150

1,120

1,070

1,080

1,150

1,150

1,120

1,140

1,140

1,110

1,030

968

926

*878

886

894

934 

918

910

878

830

732

774

750

718

710

689

661

647

633

647

28,293

913

3.15

3.63

56,120

June

640

619

654

726

682

710

1,500

1,490

5.650

2,390

1,700

1,330

*1,150

1,180

1,200

1,050

959 

894

910

862

806

766

734

703

668

654

633

605

577

577

30,999

1,033

3.56

3.98

61,490

July

564

540

540

528

654

758

640

584

*540

528

522

510

492

486

480

468

450 

434

417

406

400

395

390

380

375

365

360

360

355

350

545

14,616

471

1.62

1.87

28,990

Aug.

340

400

534

422

375

360

345

356

327

322

322

318

314

314

314

309

304 

£96

288

288

284

280

280

280

280

275

*275

267

259

255

9,822

317

1.09

1.26

19,480

Sept.

251

248

248

244

244

236

236

236

259

340

498

400

327

296

284

275

267 

263

259

267

284

271

259

280

841

1,440

986

782

881

1/700

13,402

447

1.54

1.72

26,580

Calendar year 1955: Max 25,400 Mln 271 Mean 2,350 Cfsm 8.10 In. 110.00 Ao-ft 1,701,000

Water year 1955-56: Max 25,400 Mln 236 Mean 2,595 Cfsm 8.95 In. 121.79 Ao-ft 1,883,000

Peak discharge (base. 15.500 cfs). Nov. 5 (10 a.m.) 27,800 cfs (55.14 ft); Dec. 12 (1 to 2 a.m.) 

16,400 cfs (5l782 ft); Jan. 16 (4:50 p.m.) 14,000 cfs (50.97 ft); Mar. 25 (7:30 p.m.) 14,300 cfs 

(31.10 ft).

* Discharge measurement made on this day.
28 CHEHALIS RIVER BASIN

Wynoochee River above Save Creek, near Aberdeen, Wash.

Location. Lat 47"18', long 123°39', in NW£ sec. 24, T. 21 N., R. 8 W., on left bank

1 mile upstream from Save Creek, 3 miles downstream from Oxbow, and 22 miles northeast 

of Aberdeen.

Drainage area.--69.5 sq mi.

Records available.--May 1925 to September 1956. Published as "at Oxbow, near Aberdeen" 

1925-52. Records published for both sites October 1951 to October 1952.

Gage. Water-stage recorder at present site and datum since Oct. 5, 1951. Datum of gage 

Ts 401 ft above mean sea level (stadia traverse). Prior to Nov. 7, 1925, staff gage at 

site 1,200 ft downstream from Oxbow at different datum. Nov. 7, 1925, to Sept. 3, 1947, 

water-stage recorder at site 1 mile downstream from Oxbow at datum 444.0 ft above mean 

sea level (levels by city of Aberdeen). Sept. 4, 1947, to Oct. 13, 1952, water-stage 

recorder at Oxbow at datum 91 ft higher.

Average discharge. 31 years, 792 cfs (573,400 acre-ft per year).

Extremes.--Maximum discharge during year, 22,400 cfs Nov. 3 (gage height, 16.53 ft), from 

rating curve extended above 9,000 cfs; minimum, 138 cfs Sept. 9 (gage height, 4.18 ft). 

1925-56: Maximum discharge, that of Nov. 3, 1955; minimum, 64 cfs Jan. 27, 1949.

Remarks. Records good. No regulation or diversion above station. 

Revisions (water years).--WSP 1216: Drainage area. WSP 1346: 1952.

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

(Shifting-control method ut

Oct. 1 to Mar. 22

4.3

4.6

5.0

5.5

6.0

177

285

471

765

1,150

7.0

8.0

10.0

13.0

16.0

2,150

3,430

6,830

13,400

20,800

jed Nov. 7-24, Mar. 22)

Mar. 23 to Sept.

4.1

4.3

4.5

4.8

5.1

119

171

239

370

525

5.5

6.0

7.0

8.5

30

790

1,210

2,370

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

Cfsm

In.

Ac-ft

Oct.

180

177

T50

434

430

310

*385

1,980

2,230

1,500

1,060

1,110

814

652

558

498

451

410

377 

358

340 

323

310 

1,600

5.180

2,080

1,690

1,810

3,210

2,020

1,380

34,037

1.0S8

15.8

18.21

67,510

Nov.

1,070

4,050

18,600

9,620

3,520

2,300

1,730

1,450

1,250

*1,180

1,010

888

814

746

700

670

634

1J30"

1,170 

1,220

974 

858

1,030 

2,840

3,500

2,750

2,370

2,200

1,900

1,830

73,704

2,457

35.4

39.44

146,200

Dec.

1,850

*1,440

1,240

1,070

1,010

1,300

1,350

1,440

1,320

1,410

5,750

2,780

1,660

1,300

1,100

990

880

807

888 

1,980

2,440 

2,660

1,850 

1,570

1,780

1,780

1,390

1,140

982

880

793

46,830

1,511

21.7

25.06

92,890

Jan.

786

850

1,010

1,370

1,790

2,130

1,410

1,120

998

902

1,320

1,460

1,560

1,280

1,960

4,400

2,36(5

2,300

1,930 

1,710

1,520

1,530

1,470 

1,230

1,040

895

800

732

670

616

569

43,718

1,410

20.3

23.39

86,710

Feb.

*547

525

493

482

476

451

435

420

410

406

514

552

493

461

420

406

396

382

556 

406

420

401

382

386

386

382

386

807

Sou

13,421

463

6.66

7.18

26,620

Mar.

1,670

1,840

1,850

1,170

885

706

706

640

569

520

476

451

430

406

401

*396 4"20"

509

64O 

646

1,580

3,110

4.200 

2,680

1,900

1,640

1,330

1,500

2,160

1^990

40,004

1,290

18.6

21.41

79,350

Apr.

1,510

1,240

1,080

1,050

990

886

854

814

783

878

1,070

1,120

1,300

1,490

1,250

1,080

958

934

1,050 

 1,330

1.590 

1,390

1,160 

1,070

1,010

1,020

990

894

806

748

32,345

1,078

15.5

17.31

64,160

May

706

685

650

650

734

798

806

902

974

942

790

685

618

592

657

886

1,080

1,220

1,310 

1,120

918 

846

942

870

790

814

734

650

685

ftOO 982

25,906

836

12.0

13.86

51,380

June

790

713

755

798

657

720

1,380

 2,480

3.280

1,820

1,290

1.040

950

1,080

1,050

886

814

776

910 

790

685 

657

644 

598

561

555

611

630

585

5_3_7

29,042

968

13.9

15.54

57,600

July

498

520

531

503

998

762

592

598

644

637

604

579

573

514

455

450

*465

486

498 

498

470 

425

400 

385

375

351

332

310

297

292

288

15,330

495

7.12

8.20

30,410

Aug.

271

301

288

259

251

247

243

235

232

232

221

217

214

210

207

200

193

190

184 

184

181 

177

177 

174

174

168

168

165

160

160

157

6,440

208

2.99

3.45

12,770

Sept.

157

154

151

151

146

143

141

TIT

151

174

*247

228

187

174

165

160

154

151

149 

160

163 

146

143

217

1.100

998

573

486

1,010

934

9,054

302

4.35

4.84

17,960

Calendar year 1955 : Max 18,600 Mln 168 Mean 903 Cfsm 13.0 In. 176.32 Ac-ft 653,500

Water year 1955-56 : Max 18,600 Mln 141 Mean 1,010 Cfsm 14.5 In. 197.89 Ac-ft 733,600

Peak discharge (base, 6,800 efs).--0ct. 25 (5:30 a.m.) 7,150 cfs (10.16 ft); Nov. 3 (10 a.m.) 

22,400 cfs (16753 ft).

 Discharge measurement made on this day.
HUMPTULIPS RIVER BASIN 29

Humptulips River near Humptulips, Wash.

Location.--Lat 47°13 I 40", long 123°56'25", in NE^ sec. 17, T. 20 N., R. 10 W., on right 

bank 1 mile southeast of Humptulips, 2.5 miles upstream from Stevens Creek, and 3jj miles 

downstream from confluence of East and West Forks.

Drainage area.--130 sq mi.

Records available.--May 1933 to January 1935, July 1942 to September 1956.

Gage.--Staff gage and crest-stage indicator; gage read once or twice daily. Datum of gage 

HTs 117.4 ft above mean sea level (river-profile survey). Prior to Jan. 14, 1935, and 

Mar. 1, 1950, to Jan. 15, 1953, water-stage recorder and July 1, 1942, to Feb. 28, 1950, 

staff gage, at same site and datum.

Average discharge.--15 years (1933-34, 1942-56), 1,322 cfs (957,100 acre-ft per year).

Extremes. Maximum discharge during year, 25,000 cfs Nov. 3 (gage height, 11.09 ft); minimum observed, 171 cfs Sept. 7, 8 (gage height, 0.97 ft).

1933-35, 1942-56: Maximum discharge, 33,000 cfs Jan. 22, 1935 (gage height, 12.7 ft, 

from floodmarks), from rating curve extended above 16,500 cfs; minimum observed, 82 cfs 

Sept. 11. 1944; minimum gage height, 0.64 ft Sept. 14, 1949 (from graph based on gage 

readings).

Remarks.--Records fair. No diversion above station. Slight regulation by fish hatchery 

on West Fork for short periods at low flow.

Revisions (water years).--WSP 1216: 1934-35, 1943-46, 1947(M), 1949(M). WSP 1246: 

Drainage area. WSP 1396: 1946(M), 1954(P).

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

in cubic feet per second) 

(Shifting-control method used Oct. 1 to Nov. 2)

Oct. 1 to No Nov. 3 to Sept. 30

0.9 

1.3 

2.0

188

368

890

3.0 

4.0 

6.0

2,050

3,670

7,800

0.9 

1.3 

2.0 

3.0 

4.0

147

295

750

1,890

3,540

5.0 

6.5 

8.0 

10. O

5,540

9,060

13 , 4OO

20,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

Tbtal

Mean

Cf sm

In.

Ac-ft

Oct.

203

?I4

221

305

651

*440

386

2,360

3,280

2,440

1,470

1,580

1,200

935

809

699

643

575

532

490

465

440

410

1,570

7.750

3,960

2,690

3,850

7,130

3,960

2,720

54,378

1,754

13.5

15.56

107,900

Nov.

1,880

3,570

19 , 100

12,400

5,640

3,480

2,510

2,200

*1,710

1,970

1,630

1,380

1,220

1,110

990

921

867

903

1,660

2,160

1,660

1,380

1,820

3,700

6,120

5,160

3,840

3,280

2,990

2,800

100,051

3,335

25.7

28.62

198,400

Dec.

3,370

2,650

2,020

1,660

1,570

1,780

*2,220

2,600

2,380

2,160

7.040

6,130

3,260

2,210

1,760

1,540

1,320

1,160

1,370

2,160

3,030

3,960

3,210

2,700

3,120

3,480

2,700

2,040

1,660

1,430

1,220

78,910

2,545

19.6

22.57

156,500

Jan.

1,270

1,450

1,650

2,410

2,770

5,220

3,220

2,280

1,920

1,650

1,830

2,240

2,620

1,930

2,850

8.210

5,160

4,550

3,710

3,220

2,470

2,570

2,470

2,150

1,790

1,570

1,350

1,220

1,100

1,060

885

78,795

2,542

19.6

22.54

156,300

Feb.

831

*759

726

710

777

702

678

646

622

606

1,020

1,290

1,060

912

813

726

726

646

726

813

903

903

867

903

1,000

960

940

2.680

2,600

27,545

950

7.31

7.88

54,630

Mar.

5,500

6,300

5,370

3,560

2,360

1,700

1,900

2,220

1,710

1,390

1,210

1,070

1,000

921

*876

849

867

980

1,260

1,360

2,800

5,140

7^70

4,970

3,210

2,800

2,150

2,380

4,430

5,440

4,170

87,263

2,815

21.7

24.96

173,100

Apr.

2.800

2,240

1,810

1,810

1,680

1,440

1,420

1,300

1,210

1,250

1,490

1,500

1,610

1,850

1,570

1,350

1,180

1,110

*1,220

1,430

1,680

1,490

1,270

1,170

1,100

1,100

1,050

950

903

831

42,814

1,427

11.0

12.25

84,920

May

111

742

718

702

768

858

822

858

885

876

804

702

638

614

638

742

885

940

990

894

768

694

718

686

638

638

569

534

513

583

710

22,904

739

5.68

6.55

45,430

June

646

598

569

622

622

562

*1,220

1,150

3^860

2,280

1,490

1,130

950

1,060

960

867

768

718

750

734

646

614

583

548

499

499

499

499

478

432

26,853

895

6.88

7.68

53,260

July

420

414

414

396

768

702

548

499

492

471

432

426

408

396

370

*350

350

350

350

345

331

322

313

300

295

287

279

271

263

263

255

12,080

390

3.00

3.46

23,960

Aug.

255

300

326

275

259

251

244

240

236

236

228

228

225

225

225

221

221

213

206

206

206

203

199

206

203

199

195

188

192

192

188

6,991

226

1.74

2.00

13,870

Sept.

188

178

178

174

174

174

171

17T

206

267

438

*375

283

244

217

210

203

195

188

203

240

206

199

287

1,500

1,660

1,020

804

804

1,670

12,827

428

3.29

3.67

25,440

Calendar year 1955 : Max 19,100 Min 195 Mean 1,385 Cfsm 10.7 In. 144.63 Ac-ft 1,003,000

Water year 1955-56 : Max 19,100 Min 171 Mean 1,507 Cfsm 11.6 In. 157.74 Ac-ft 1,094,000

Peak discharge (base. 12.000 cfs).--Nov. 3 (time unkown) 25,000 cfs (11.09 ft). 

* Discharge measurement made on this day.
30 QUINAULT RIVER BASIN

Quinault River at Quinault Lake, Wash.

Location.--Lat 47°27'30", long 123°53'30", in sec. 25, T. 23 N., R. 10 W., on left bank at 

outlet of Quinault Lake, 50 ft downstream from Olympic Highway bridge, U. S. Highway 101, 

and 4 miles southwest of Quinault.

Drainage area. 264. sq mi.

Records available.--October 1911 to September 1956. Monthly discharge only for some 

periods, published in WSP 1316.

Gage.--Water-stage recorder. Datum of gage Is 184.60 ft above mean sea level (Washington 

State Highway benchmark). Prior to Jan. 1, 1913, staff gage on south shore of Quinault 

Lake 3 miles northeast of present site and Jan. 1, 1913, to Sept. 30, 1916, staff gage 

at mouth of Canoe Creek 4 miles northeast of present site, at datum 1.06 ft higher. 

Oct. 1, 1916, to May 2, 1935, water-stage recorder at site 300 ft downstream from 

present site at datum 0.36 ft higher than present datum.

Average discharge.--45 years, 2,761 cfs (1,999,000 acre-ft per year).

Extremes.--Maximum discharge during year, 50.200 cfs Nov. 4 (gage height, 20.51 ft); minimum, 572 cfs Oct. 1 (gage height, 2.51 ft).

1911-22, 1924-56: Maximum discharge, that of Nov. 4, 1955; minimum, 276 cfs Sept.12, 

1944 (gage height, 1.96 ft).

Flood in November 1909 reached a stage of approximately 22 ft, present datum (discharge, 52,600 cfs).

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

Natural regulation by Quinault Lake. No diversion above station.

Revisions (water years) .--WSP 442: Drainage area. WSP 1286: 1915-16(M), 1934, 1936-39(M).

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

in cubic feet per second) 

(Shifting-control method used Mar. 27 to May 18)

2.5 

3.0 

3.5

Oct. 1 to No

565

940

1,400

4.0 

5.0 

6.0

1,920

3,270

4,950

Note. Same as following 

table above 6.0 ft.

2.5 

3.0 

3.5 

4.0 

5.0

Nov. 4 to Sept. 30

620

1,000

1,460

2,000

3,300

6.0

8.0

11.0

15.0

19.0

4,950

8,980

16,300

28,500

43,900

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

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

578

584

578

748

1,030

*1,020

1,070

1,960

4,930

5,210

4,240

3,930

3,5OO

3,080

2,700

2,320

2,080

1,860

1,710

1,580

1,460

1,350

1,270

2,300

12.200

11,800

8,370

7,320

S,560

9 380 

7^080

115,798

3,735

14.1

16.31

229,700

Nov.

5,380

6,500

36,400

*41.200

20,800

11,500

7,930

6,120

5,090

5,110

4,500

3,840

3,290

2,940

2,630

2,410

2.260

2,390

2,840

3,100

2,990

2,760

2,710

3,500

6,740

7,180

6,840

6,780

6,300

5,740

227,770

7,592

28.8

32.09

451,800

Dec.

5,660

4,950

4,130

3,480

3,120

*3,120

3,380

3,520

3,630

3,510

5,260

8.650

6,800

5,090

4.OOO

3,380

2,950

2,670

2,620

3,120

4,630

6,300

6,420

5,510

5,740

6,040

5,170

4,180

3,450

2,950 

2,620

136,050

4,389

16.6

19.17

269,900

Jan.

2,400

2,370

2,440

2,700

3,200

4,990

4,720

3,870

3,260

2,850

2,750

3,130

3,660

3,730

3,890

7,880

8.590

7,100

6,000

5,420

4,630

4,110

3,940

3,680

3,290

2,890

2,570

2,340

2,140

1,960 

1.790

118,090

3,809

14.4

16.64

234,200

Feb.

1,680

*1,570

1,500

1,550

1,700

1,600

1,500

1,400

1,350

1.500

1,400

1,700

2,100

1,800

1,500

1,400

1,450

1,550

1,750

2,000

1,900

1,800

1,700

1,750

2,000

1,900

1,800

2,100

2.400

-----

49,150

1,695

6.42

6.92

97,490

Mar.

3,000

3,700

4,100

3,700

3,200

2,700

2,900

2,500

2,200

1,900

1,650

1,500

1,450

1,350

*1,290

1,240

1.220

1,250

1,380

1,540

2,010

4,090

6,440

6.800

5,430

4,520

3,730

3,340

3,740

4 350 

4*250

92,470

2,983

11.3

13.03

183,400

Apr.

3,740

3,150

2,710

2,620

2,250

2,050

1,950

1,900

1.850

2,100

2,500

2,800

3,000

3,100

3,200

3,000

2,750

2,600

*2,740

3,160

4,050

4.660

4,490

4,130

3,790

3,600

3,570

3,440

3,190

2,920

91,010

3,034

11.5

12.82

180,500

May

2,740

2,590

2,440

2.560

2,400

2,530

2,660

2,940

3,590

5,740

5,750

3,390

3,020

2,760

2,740

3,090

3,920

4,990

6,140

6.500

5,890

5,210

5,020

5,020

4,790

4,650

4,420

4,080

3,950

4,280 

5,170

120,550

5,888

14.7

16.98

239,100

June

5,300

4,840

4,590

4,750

4,420

4,110

*4,880

6,440

11.400

1O.5OO

8,440

6,680

5,550

5,210

5,170

4,880

4,570

4,420

4,720

4,950

4,540

4,180

4,000

5,750

5,440

5.270

3,480

5,760

3,730

5,540

155,470

5,116

19.4

21.62

304,400

July

5,270

5,200

,250

,250

,810

,280

,870

,710

,920

,220

.550

,540

,340

,160

5,700

*3,420

5,320

5,540

5,480

5,660

5,740

5,500

5,220

5,080

5,010

2,780

2,570

2,550

2, ISO

2 050 

l'.94Q

105,270

3,596

12.9

14.85

208,800

Aug.

1.840

1,810

1,790

1,690

1,650

1,590

1,590

1,570

1,560

1,540

1,520

1,490

1,470

1,460

1,450

1,420

1,530

1,270

1,250

1,220

1,220

1,220

1,220

1,200

1,150

1,150

1,070

1,020

960

920 

880

42,460

1,570

5.19

5.98

84,220

Sept.

848

808

792

753

725

704

676

669

704

792

1,040

*1,120

1,060

976

904

848

800

760

732

746

792

792

768

968

2,040

5,200

5,170

2,710

2,850

5.520

57,247

1,242

4.70

5.25

73,880

Calendar year 1955 : Max 41,200 Mln 578 Mean 3,104 Cfsm 11.8 In. 159.60 Ac-ft 2,247,000

Water year 1955-56 : Max 41,200 Mln 578 Mean 3,523 Cfsm 13.3 In. 181.64 Ac-ft 2,557,000

Peak discharge (base. 12.000 cfs). Oct. 25 (6 p.m.) 14,900 cfs (10.46 ft); Nov. 4 (12:50 a.m.) 

50,200 cfs (20.51 ft).

* Discharge measurement made on this day.

Note. No gage-height record Feb. 5 to Mar. 14, Apr. 5-18; discharge estimated on basis of recorded 

range in stage and records for stations on nearby streams.
HOH RIVER BASIN 31

Hoh River near Spruce, Wash.

Location.--Lat 47°48'20", long 124°06'20", InNEi sec. 34, T. 27 N., R. 11 W., on left 

bank 1 mile downstream from Maple Creek, 2£ miles west of Spruce, and 5 miles downstream from South Fork.

Drainage area. 208 sq ml.

Records available. August 1926 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 320 ft (from river-profile map).

Average discharge.--30 years, 2,005 cfs (1,452,000 acre-ft per year).

Extremes.--Maximum discharge during year, 33,600 cfs Nov. 3 (gage height, 19.70 ft, from 

high-watermark In well), from rating curve extended above 13,000 cfs on basis of slopearea determinations at gage heights 16.6 ft and 22.2 ft; minimum, 548 cfs Oct. 1; minimum gage height, 1.12 ft Sept. 5, 6.

1926-56: Maximum discharge, 38,700 cfs Nov. 26, 1949 (gage height, 22.2 ft, from 

high-water marks), from rating curve extended above 13,000 cfs on basis of slope-area 

determination of peak flow; minimum, 247 cfs Nov. 14, 15, 1929; minimum gage height, 

0.68 ft Oct. 18, 19, 1946.

Maximum stage known since at least 1891, that of Nov. 26, 1949.

Remarks. Records good except those for period of doubtful gage-height record, which are 

fair. No artificial regulation or diversion above station. Large diurnal fluctuation 

during summer months caused by melting glaciers at source.

Revisions (water years).--WSP 1182: 1935(M). WSP 1216: Drainage area. WSP1286: 1934.

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

In cubic feet per second)

Oct. 1 to Nov. 3 Nov. 4 to Sept. 3O

1.2 

2.0 

3.0 

4.0 

5.0 

6.0 

7.0

530

840

1,350

2,000

2,850

4,000

5,300

8.0

10.0

12.0

14.0

16.0

18.0

7,000

11,000

15,000

19,400

24,400

29,400

1.2 

2.0 

3.0 

4.0

710

1,100

1,680

2,360

5.0 3,180

6.0 4,150

8.0 7,000

Note. Same as preceding 

table above 8.0 ft.

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30 

31

 total

Mean

Cfsm

In.

Ac-ft

Oct.

554

596

612

1,050

*1,020

772

1,010

2,720

3,280 

2,410

1,840

2,060

1,670

1,570

1,390

1,190

1,140

1,080

1,000

916

840 

792

760

2,470

11.500

5,600

4,140

4,240

6,800

4,950 

3,460

73,432

2,369

11.4

13.13

145,700

Nov.

2,680

7,010

29,100

16,700

7,960

5,120

3,920

*3,620

3,740 

4,110

5,180

2,660

2,390

2,140

1,950

1,830

1.720

2,040

2,490

2,350

2,050 

1,840

1,820

3,730

4,820

4,080

4,030

3,960

3,500

3,580

139,940

4,665

22.4

25.02

277,600

Dec.

5,420

2,860

2,490

2,210

2,160

2,340

*2,360

2,890

2,750 

2,660

5.150

5,000

5,220

2,750

2,420

2,260

2,070

1,940

2,280

3,320

4,070 

4,370

3,410

3,260

4,460

3,760

3,020

2,550

2,260

2,040 

1 . 840

91,590

2,955

14.2

16.38

181,700

Jan.

1,870

1,930

2,010

2,220

5,460

4,080

2,900

2,400

2,180 

2,010

2,380

2,600

3,080

2,560

3,760

7.060

4,500

*4,150

3,490

3,050

2,750 

2,660

2,650

2,460

2,230

2,050

1,900

1,790

1,670

1,540 

1.440

84,830

2,736

13.2

15.17

168,300

Feb.

1,360

1,320

1,280

1,340

1,400

1,240

1,170

1,140

1.100 

1,140

1,480

1,670

1,570

1,400

1,250

1,170

1,240

1,320

1,580

1,530

1,520 

1,490

1,420

1,460

1,560

1,530

1,570

2,260

2.500

-----

41,790

1,441

6.95

7.47

82,890

Mar.

2,720

5,000

5,520

d2,6DO

d2,270

dl,990

d2,050

dl,890

dl,690 

dl,490

dl,300

dl,200

dl,120

*940

890

"ST5 885

1,100

1,520

1,340

2,350 

4,160

5.540

3,860

3,040

2,710

2,280

2,340

2,890

3,320 

2,870

69,180

2,232

10.7

12.37

137,200

Apr.

2,380

2,O9O

1,860

1,810

1,690

1,540

1,510

1,440

1.590 

1,560

1,900

2,120

2,320

2,610

2,460

2,210

1,960

*1,870

2,120

2,670

5.270 

3,130

2,680

2,400

2,260

2,270

2,210

2,050

1,880

1,740

63,400

2,113

10.2

11.54

125,800

May

1,650

1,560

1.490

1,490

1 , 550

1,610

1,730

2,040

2,350 

2,520

2,250

1,910

1,670

1,570

1,750

2,380

3,000

3,500

3.790

3,580

2,950 

2,640

2,800

2,730

2,580

2,560

2,370

2,220

2,360

2,940 

3,460

72,980

2,354

11.3

15.05

144,800

June

3,030

2,770

2,800

2,830

2,460

*2,440

3,080

6,060

8.160 

5,700

4,290

3,370

3,000

3,150

3,200

2,860

2,830

2,890

3,510

3,170

2,660 

2,610

2,600

2,280

2.120

2,260

2,800

2,640

2,350

2,140

96,040

3,201

15.4

17.17

190,500

July

2,040

2,120

2,160

2,140

5.590

2,910

2,460

2,580

2,980 

3,130

5,070

*3,130

3,110

2,750

2,380

2,300

2,280

2,460

2,720

2,940

2,860 

2,540

2,410

2,410

2,240

1,940

1,740

1,570

1,490

1,460 

1.590

75,120

2,423

11.6

13.43

149,000

Aug.

1,310

1,370

1,350

1,240

1,260

1,310

1,310

1,340

1,380 

1,370

1,360

1,420

1,510

1,600

1.610

1,460

1,310

1,260

1,340

1,420

1,530 

1,510

1,510

1,490

1,420

1,290

1,240

1,110

 1,110

1,050 

1.010

41,780

1,348

6.46

7.47

82,870

Sept.

1,040

925

832

764

714

719

768

782

910 

1,330

1,420

1,160

970

905

832

786

773

773

768

1,040

1,080 

816

782

1,980

5.820

5,760

2,550

2,070

5,200

2,710

40,761

1,559

6.53

7.29

80,850

Calendar year 1955 : Max 29,lOO Mln 554 Mean 2,1O2 Cfsm 1O.1 In. 137.18 Ac-ft 1,522,000

Water year 1955-56 : Max 29,100 Mln 554 Mean 2,434 Cfsm 11.7 In. 159.29 Ac-ft 1,767,000

Peak discharge (base. 10,000 cfs). Oct. 25 (8:45 a.m.) 15,600 cfs (12.50 ft); Oct. 29 (1:30 p.m.)

11,300 cfs (10.14 ft); Nov. 3 (time unknown) 55,600 cfs (19.70 ft).

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed from reconstructed gage-height graph based on

recorder graph.
32 QUILLAYUTE RIVER BASIN

Soleduck River near Pairholm, Wash.

Location. Lat 48°02'40", long 123°57 I 35", in lot 4, SW£ sec. 35, T. 30 N., R. 10 W., on 

right bank 300 ft downstream from South Fork, 2.5 miles southwest of Fairholm, and 

17 miles east of Beaver.

Drainage area.--83.8 sq mi.

Records available. October 1917 to September 1921, October 1933 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,060 ft (from topographic map). October 1917 to September 1921 water-stage recorder and Oct. 4 to Nov. 4, 1933, staff gage, 

at same site at datum 1.2 ft higher.

Average discharge.--27 years, 622 cfs (450,300 acre-ft per year).

Extremes. Maximum discharge during year, 18,000 cfs Nov. 3 (gage height, 14.25 ft); minimum, 97 cfs Oct. 2 (gage height, 1.15 ft).

1917-21, 1933-56: Maximum discharge, 23,500 cfs Nov. 26, 1949 (gage height, 16.42 

ft, from high-water mark in well), from rating curve extended above 13,000 cfs on 

basis of slope-area determination of peak flow; minimum, 51 cfs Sept. 11, 12, 1944; 

minimum gage height, 0.79 ft Oct. 17-20, 1952.

Remarks. Records good. No regulation or diversion above station.

Revisions (water years). WSP 1182: 1918-19, 1920(M), 1921, 1934-39, 1940(M), 1941-42, 

1943(M), 1944-46, 1947-48(M). WSP 1216: Drainage area. WSP 1286: 1939, 1949.

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

in cubic feet per second)

Oct. 1 to Nov. 2 Nov. 3 to Sept. 30

1.3 

1.5 

1.7 

2.1

90

120

158

204

320

3.0 

3.5 

4.0

695

1,000

1,410

Note. Same as following 

table above 4.0 ft.

1.4 

1.7 

2.0 

2.5 

3.0 

3.5

108

134

188

260

430

660

990

4.0

5.0

6.0

8.0

10.0

12.0

1,410

2,440

3,670

6,670

9,870

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

Cfsm

In.

Ac-ft

Oct.

98

98

109

260

*244

154

206

744

924 

685

501

564

420

354

307

264

241

220

204

190

178

169

162

618

5.620

1,400

1,110

1,310

2,110

1,460

958

19,882

641

7.65

8.82

39,440

Nov.

734

3,170

* 15. 400

5,590

2,250

1,520

1,170

1,050

998 

1,010

815

660

605

546

528

528

524

565

696

645

560

502

492

1,210

1,810

1,390

1,660

1,520

*1,290

1,250

48,668

1,622

19.4

21.60

96,550

Dec.

1,150

906

726

640

635

655

630

857

794 

801

1,920

1,760

1,060

808

702

645

580

528

605

1,290

1,800

1.940

1,300

1,100

1,350

1,160

906

732

635

565

506

29,666

957

11.4

13.17

58,840

Jan.

484

474

454

479

816

1,010

690

565

484 

434

620

732

864

708

1,210

2.570

1,510

*1,460

1,170

998

864

836

801

678

600

538

470

438

402

360

522

23,841

769

9.18

10.58

47,290

Feb.

316

316

304

300

294

280

268

257

255 

252

257

280

257

252

224

222

229

229

232

224

220

215

206

208

206

201

212

390

364

7,470

258

3.08

3.32

14,820

Mar.

570

690

738

538

442

368

422

390

333 

294

268

250

244

*234

227

227

227

239

282

297

524

1,120

1.760

1,270

927

762

610

640

850

955

822

17,520

565

6.74

7.78

34,750

Apr.

660

570

506

484

454

418

406

398

390 

434

560

708

906

1,090

1,090

927

*780

72O

822

1,200

1.650

1,550

1,210

1,020

969

976

934

836

756

678

24,102

803

9.58

10.70

47,810

May

650

615

585

580

595

645

738

983

1,170 

1,210

962

780

672

660

780

1,130

1,470

1,790

1.860

1,640

1,280

1,080

1,210

1,170

1,090

1,090

976

913

998

1,310

1,480

32,112

1,036

12.4

14.25

63,690

June

1,200

1,080

1,050

983

878

*934

1,250

2,090

2.550 

1,870

1,410

1,130

1,050

1,070

1,080

976

976

998

1,150

1,010

850

843

836

726

666

808

998

857

732

660

32,711

1,090

13.0

14.52

64,880

July

650

702

726

696

1.020

808

684

774

906 

899

885

*871

850

714

630

610

605

640

660

666

620

556

515

510

462

410

383

350

329

322

313

19,766

638

7.61

8.77

39,210

Aug.

294

326

322

282

271

271

268

260

257 

252

244

239

239

237

234

224

208

199

197

195

195

192

186

182

188

178

170

*164

161

157

152

6,944

224

2.67

3.08

13,770

Sept.

148

144

140

136

131

128

128

127

139 

157

188

163

142

133

128

124

121

120

119

T50

166

137

133

289

755

939

406

339

739

748

7,417

247

2.95

3.29

14,710

Calendar year 1955: Max 13,400 Min 98 Mean 675 Cfsm 8.05 In. 109.35 Ac-ft 488,700

Water year 1955-56: Max 13,40O Min 98 Mean 738 Cfsm 8.81 In. 119. 88 Ac-ft 535,700

Peak discharge (base. 6.000 cfs).--Nov. 3 (8 a.m.) 18,000 cfs (14.25 ft). 

Discharge measurement made on this day.
ELWHA RIVER BASIN 33

Lake Mills at Glines Canyon, near Port Angeles, Wash.

Location. Lat 48°00'05", long 123°36'00", on Elwha River, in SE?- sec. 17, T. 29 N., R. 7W., 

at Glines Canyon Dam 2 miles upstream from Griff Creek, 4 miles south of Elwha, and 

11 miles southwest of Port Angeles.

Drainage area. 245 sq mi.

Records available.--April 1927 to September 1956. Prior to October 1950, monthly change in 

contents published with records for Elwha River at McDonald Bridge, near Port Angeles.

Gage. Staff gage read twice daily. Datum of gage is 19.67 ft below mean sea level, datum 

of 1929, supplementary adjustment of 1947.

Extremes. Maximum contents observed during year, 39,080 acre-ft Nov. 3, Apr. 29 (gage 

height, 611.0 ft); minimum observed, 30,030 acre-ffc Apr. 12 (gage height, 589.1 ft).

1927-56: Maximum contents observed, 39,940 acre-ft Dec. 22, 1936 (gage height, 613.0 

ft); minimum observed (since reservoir first filled in May 1927), 24,290 acre-ft Nov. 14, 

1929 (gage height, 574.4 ft).

Remarks.--Reservoir is formed by concrete dam, completed in 1927; storage began Apr. 1, 1927. 

Total capacity, 37,790 acre-ft at gage height 608 ft (top of gates). Figures given herein represent total contents. Water is used for power by Crown Zellerbach Corp.

Cooperation. Gage-height record furnished by Crown Zellerbach Corp.

Month-end gage height and contents, water year October 1955 to September 1956

Date

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

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

Calendar year 1955. ........

May 31.......... ............

Water year 1955-56 .........

Gage height 

(feet)t

604.5

-

-

Contents 

(acre-feet)

36,320

-

-

Change in contents 

(acre-feet)

_

-1 , 220

-1,810

0

+2,500

t Gage height at 12 p.m. based on twice-daily staff-gage readings.
34 ELWHA RIVER BASIN

Elwha River at McDonald Bridge, near Port Angeles, Wash.

Location . Lat 48°03'20", long 123°34'55", in NE&Wi sec. 33, T. 30 N . , R. 7 W., on right 

bank 300 ft upstream from site of McDonald Bridge (now removed), half a mile upstream 

from Little River, 7 miles upstream from mouth, and 8 miles southwest of Port Angeles.

Drainage area. 269 sq mi.

Records available. --October 1897 to December 1901, October 1918 to September 1956.

Gage. --Water-stage recorder. Datum of gage is 200.00 ft above mean sea level, datum of 

T929. Oct. 1, 1897, to Dec. 31, 1901, wire-weight gage at McDonald Bridge at different datum. Dec. 9, 1918, to May 1, 1936, water-stage recorder under McDonald Bridge 

at datum 7.4 ft higher.

Average discharge. --42 years, 1,481 cfs (1,072,000 acre-ft per year), adjusted for storage 

since April 1927.

Extremes .--Maximum discharge during year, 21.400 cfs Nov. 3 (gage height, 20.91 ft); minimum, 150 cfs Oct. 3 (gage height, 7.90 ft); minimum daily, 360 cfs Sept. 3.

1897-1901, 1918-56: Maximum discharge, 41,600 cfs Nov. 18, 1897 (gage height, 

14.5 ft, from graph based on gage readings, site and datum then in use), from rating 

curve extended above 3,300 cfs on basis of two determinations of flow over dam at discharges 26,700 cfs and 30,100 cfs, referred to 1897 datum; minimum daily, 10 cfs 

Oct. 3, 1938.

Remarks. --Records good. Water is diverted through Glines Canyon powerhouse and returned 

to river above gage. Plow partly regulated by Lake Mills (see preceding page).

Revisions (water years) .--WSF 1246: Drainage area. WSP 1286: 1898, 1899(M), 1900-1902 

1919, 1920-31(M), 1932, 1933 (M).

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

In cubic feet per second)

Oct. 1 to Nov. 2 Nov. 3 to Sept. 30

8.5 390

9.O 680

10.0 1,500

11.0 2,57O

12.0 3,840

14.0 6,760

8.5 320

9.0 565

10.0 1,Z5O

11.0 2,250

12.0 3,520

14.0 6,620

17.0 12,300

20.O 19,100

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

15

14

15

16 

17

18

19

20

21

22

25

24

25

26

27

28

29

5O

51

Total

Mean

Ac-ft

(t)

Oct.

401

48T

409

*522

544

522

511

664

1,170

1,220

1,070 

925

895

948

1,010

948 

756

680

701

722

701

680

654

882

6.560

2,450

2,250

1,950

5,420

2,610

1,840

58,859

1,254

77,080

+2,420

Nov.

1,750

*5,880

19.100

15,500

5,900

4,280

5,550

5,580

2,84O

2,840

2,490 

1,920

1,650

1,750

1,650

1,620 

1,520

1,670

1,760

1,750

1,460

1.250

1,560

1,980

2,260

1,920

1,820

2,060

*2,270

2,290

97,190

5,240

192,800

-1,070

Dec.

1,640

1,77O

1,550

1,650

1,59O

1,570

1,540

1,540

1,470

1,580

2,920 

5.700

2,250

1,810

1.570

1,690 

1,770

1,570

1,480

2,140

2,680

5,080

2,570

2,250

2,590

2,670

1,880

1,790

1,670

1,550

1,460

60,150

1,940

119,500

-1,220

Jan.

1,250

1,400

1,260

1.29O

1,610

2,200

1,650

1,410

1,260

1,240

1,220 

1,580

1,500

1,570

1,470

2.600 

*2,260

2,120

1,990

1,820

1,720

1,720

,670

,560

,590

,470

,410

,450

,250

,090

968

47,778

1,541

94,770

+40

Feb.

849

740

740

746

746

746

746

746

912

1.070

870 

686

776

884

704

698 

692

692

692

692

69?

692

692

686

686

686

680

698

686

21,625

746

42,890

+540

Mar.

722

905

1,090

1,060

865

782

884

954

919

788

680 

668

662

*650

604

548 

560

565

576

609

800

1,140

1,760

2.140

1,690

1,540

1,520

1,450

1,410

1,400

1,450

51,149

1,005

61,780

+460

Apr.

1,410

1,580

1,580

1,370

1.170

1,320

1,540

1,550

1,550

1,320

1,350 

1,540

1,560

1,580

1,420

1,480 

 1,450

1,440

1,430

1,600

2,680

3.510

2,800

2,420

2,070

2,130

2,510

2,270

2,140

2,050

51,940

1,731

105,000

+1,750

May

1.960

1,990

2,050

2,020

1,990

1,960

2,100

2,450

3,070

3,270

2,350 

2,770

2,560

2,270

2,350

2,750 

5,860

4,850

5,590

5.650

4,320

4,000

4,250

4,580

4,250

5,940

5,870

5,550

5,550

4,260

5,400

105,310

5,355

204,900

0

June

4,920

4,500

4,410

4,590

*5,760

5,080

5,580

4,540

6.540

5,860

4,230 

3,690

5,440

5,440

5,590

5,590 

5,580

5,590

5,930

5,690

3,090

2,940

5,590

5,060

2.650

2,710

5,460

5,590

5,200

2,770

112,610

3,754

223,400 -520

July

2,55O

2,86O

2,940

2,740

5,150

5,240

2,820

2,950

5,420

*5,880

4.000 

5,850

5,580

3,480

2,950

2,800 

2,710

2,760

2,940

2,990

3,260

2,860

2,410

2,410

2,450

2,120

1,920

1,820

1,750

1,680

1.640

86,870

2,802

172,500

+450

Aug.

1,450

1.600

1,500

1,410

1,580

1,590

1,420

1,580

1,420

1,420

1,590 

1,560

1,360

1,410

1,410

1,360 

1,520

1,250

1,140

1,140

1,190

1,240

1,280

1,200

1,190

1,190

1,150

*1,050

989

989

9J32-

59,940

1,288

79,220

-1,280

Sept.

982

919

560

6 2O

821

716

680

680

680

849

1,180 

940

746

740

754

754 

698

668

662

674

668

650

592

785

1,450

1.800

1,190

1,010

1,190

1,520

25,918

864

51,410

+1,150

Adjusted for change in contents in Lake Mills

Mean

Cfsm

In.

Ac-ft

1,295

4.81

5.54

79,500

5,222

12.0

15.56

191,700

1,921

7.14

8.25

118,100

1,542

5.75

6.61

94,810

752

2.80

5.01

45,250

1,012

5.76

4.34

62,240

1,761

6.55

7.50

104,800

5,555

12.4

14.28

204,900

5,746

13.9

15.54

222,900

2,809

10.4

12.04

172,700

1,268

4.71

5.43

77,940

883

5.28

5.66

52,560

Calendar year 1955 : 

Water year 1955-56 :

Max 19,100 

Max 19,100

Min 401 

Min 560

Mean 1,599 

Mean 1,960

Ac-ft 

Ac-ft

1,158,000 

1,425,000

Adjusted

Calendar year 1955 : 

Water year 1955-56 :

Mean 1,597 

Mean 1,963

Cfsm 5.94 

Cfsm 7.30

In. 80.56 

In. 99.54

Ac-ft 

Ac-ft

1,156,000 

1,425,000

* Discharge measurement made on this day.

t Change in contents, in acre-feet, in Lake Mills; furnished by Crown Zellerbach Corp.
SIEBERT CREEK BASIN 35

Slebert Creek near Port Angeles, Wash.

Location. Lat 48°05'35", long 123°17'00", In SE£ sec. 14, T. 30 N., R. 5 W., on left 

bank 2£ miles upstream from mouth and 6? miles east of Port Angeles.

Drainage area. 17.2 sq mi.

Records available.--June 1952 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 225 ft (from topographic map).

Extremes.--Maximum discharge during year, 1,620 cfs Nov. 3 (gage height, 9.50 ft), from 

rating curve extended above 260 cfs on basis of computations of peak flow through 

culvert at gage heights 4.23 and 8.12 ft; minimum, 2.7 cfs Sept. 6, 7; minimum gage 

height, 2.33 ft Oct. 1-7.

1952-56: Maximum discharge, that of Nov. 3, 1955; minimum, 2.0 cfs Sept. 3-5, 1952; 

minimum gage height, 1.38 ft Aug. 14-19, Sept. 5-7, 9-12, 14-26, 1953.

Remarks. Records fair except those for periods of doubtful or no gage-height record, 

which are poor. No regulation or diversion above station.

Revisions (water years).--WSP 1346: 1953(M).

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

in cubic feet per second) 

(Shifting-control method used Nov. 4 to Mar. 23)

Oct. 1 to Mar. 23 Mar. 24 to Sept. 30

2.3 

2.5 

2.8 

3.1

2.8

11.5

45

107

3.5 

4.0 

5.0 

6.4

217

400

715

1,060

2.9

3.0 

3.3

2.0 

3.7

16

3.7 

4.3

53

188

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

Day

1

2

3

4

5

6

7

8

9

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.

3.6

3.6

3.6

3.8

3.8

3.6

3.8

8.0

19.5

9.7

7.5

5.6

5.2

4.8

4.8

4.5

4.2

4.2

4.5

4.5

4.2

4.2

4.2

5.6

25.

15

8.5

6.5

9.7

14.5 

11

221.2

7.14

0.415

0.48

439

Nov.

9.1

*61

1.050

1,OOO

691

313

33

25

17.5

14.5

11.5

7.5

7.0

6.7

6.3

6.0

5.7

670

7.0

7.8

6.8

6.0

15

35

67

54

37

37

39

*47

3,629.4

121

7.03

7.85

7,200

Dec.

47

37

30

25

20

19.5

19.5

22

27

22

88

155

78

52

39

32

27

27

29

76

153

250

189

140

195

183

137

102

82

69 

61

2,433.0

78.5

4.56

5.26

4,830

Jan.

56

59

61

65

122

247

142

76

42

33

29

30

33

33

56

78

67

56

*47

45

49

45

43

34

29

25

27

19.5

17

16 

15

1,696.5

54.7

3.18

3.67

3,360

Feb.

13

13

14

15

17

20

19

17

15

14

16

25

22

18

15

12

13

15

30

80

65

48

38

33

30

30

29

35

30

741

25.6

1.49

1.60

1,470

Mar.

26

32

80

74

58

40

39

34

27

22

18.5

16

*16

16

14.5

14.5

15

16

22

22

25

30

249

163

92

78

56

44

43

45 

43

1,470.5

47.4

2.76

3.18

2,920

Apr.

37

34

31

29

28

25

23

22

20

22

27

32

36

39

37

*37

30

26

26

30

37

33

27

22

22

21

19

18

17

16

823

27.4

1.59

1.78

1,630

May

15.5

14

13

12.5

12

12.5

11.5

12.5

13

13.5

12.5

11

10.5

10.5

10.5

11

11.5

12.5

12

11.5

11

10

9.6

9.0

8.8

9.0

9.4

8.8

8.2 

7.8

 

342.4

11.0

O.£40

0.74

679

June

7.0

T^

9.4

 11

13

12

12

11.5

15.5

32

25

18.5

15

13.5

13.5

13.5

15

14

13

12

11.5

10.5

9.8

9.8

9.4

9.0

8.6

8.2

7.8 

7.4

376.2

12.5

0.727

0.81

746

July

7.4

7.0

6.6

6.6

7.0

6.6

6.3

6.0

6.0

*6.0

6.0

5.7

5.4

5.4

5.4

5.4

5.1

5.1

4.8

4.8

4.5

4.5

4.5

4.5

4.2

4.2

4.2

4.2

4.2 4. 2

3 9 

165.7

5.35

0.311

0.36

329

Aug.

4.2

7.4

6.3

4.8

4.2

4.2

3.9

3.7

3.7

3.7

3.5

3.5

3.5

3.7

3.9

3.9

3.7

3.5

3.3

3.3

3.3

ITT

3.3

3.5

3.7

*3.3

3.3

3.3 

3.1

3.1

118.0

3.81

0.222

0.26

234

Calendar year 1955: Max 1.05O Mln 3.6 Mean 3O.4 Cfsm 1.77 In. 23.98 Ac-ft 22

Sept.

3.1

2.9

2.9

2.9

2.9

2.9

2.9

2.9

3.1

3.7

*9.0

173

4.2

3.7

3.5

3.5

3.5

3.3

3.3

3.5

3.3

3.1

3.1

3.3

3.3

4.8

4.5

3.9

5.1 

6.0

114.4

3.81

0.222

0.25

227

,000

Water year 1955-56: Max 1,O5O Mln 2.9 Mean 33.1 Cfsm 1.92 In. 26.24 Ac-ft 24,060

Peak discharge (base. 300 cfs). --Nov. 3 (8:30 p.m.) 1,620 cfs (9.50 ft); Dec. 22 (12:3O p.m.) 313

cfs (6.35 ft); Mar. 23 (1:45 p.m.) 438 cfs (5.61 ft).

* Discharge measurement made on this day. 

Mote. No eaee-heieht record Nov. 13-24. Jan. 17. 18. Feb. 22 to Mar. 1. Mav 23 to June 4: doubt-
36 DUNGENESS RIVER BASIN

Dungeness River near Sequim, Wash.

Location.--Lat 48°00'55", long 123°07'50", In SWiSEj- sec. 12, T. 29 N., R. 4 W., on right 

bank three-quarters of a mile upstream from Canyon Creek, 4i miles southwest of Sequim, 

and 11^ miles upstream from mouth.

Drainage area. 156 sq mi.

Records available . June 1923 to September 1930, June 1937 to September 1956. July 1897 

to July 1898 at site below Canyon Creek, published as "near Sequim," records not equivalent .

Gage. Water-stage recorder. Datum of gage is 569.3 ft above mean sea level (riverprofile survey). June 8, 1923, to Sept. 30, 1930, staff gage just above fish-hatchery 

diversion half a mile downstream at different datum. June 19 to Aug. 12, 1937, staff 

gage at present site and datum.

Average discharge.--26 years (1923-30, 1937-56), 366 cfs (265,000 acre-ft per year).

Extremes.--Maximum discharge during year, 6,750 cfs Nov. 3 (gage height, 7.28 ft), from 

rating curve extended as explained below; minimum, 134 cfs Mar. 11 (gage height,

2.59 ftJ.

1923-30, 1937-56: Maximum discharge, 6,820 cfs Nov. 27, 1949 (gage height, 7.3 ft), 

from rating curve extended above 2,000 cfs on basis of slope-area determination of 

peak flow; minimum observed, 77 cfs Sept. 10, 1928.

Remarks. Records good. No regulation or diversion above station. 

Revisions (water years).--WSP 1316: 1924-24(M), 1927(M).

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

in cubic feet per second) 

(Shifting-control method used Nov. 24 to Dec. 12, Sept. 1-25)

Oct. 1 to Nov Nov. 4 to Sept. 30

2.9 

3.2 

3.5 

4.0

4.5

148

230

340

595

970

5.0 

5.5 

6.0 

6.5 

7.0

1,490

2,220

3,170

4,350

5,830

2.6 

2.9 

3.3 

3.7 

4.1

136

229

396

615

910

4.5 

5.0 

5.5 

6.0

1,280

1,860

2,600

3,500

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.

148

ISO

153

166

163

150

156

243

293

227

184

195

206

227

233

203

206

209

206

195

181

170

163

273

934

513

362

324

421

421

344

8,019

259

1.66

1.91

15,910

Nov.

*300

730

5.060

3,260

1,550

982

774

687

654

743

585

489

468

447

437

422

391

391

396

368

349

332

328

425

463

396

391

463

463

*432

23,176

773

4.96

5.53

45,970

Dec.

*406

372

336

315

298

298

278

274

270

259

467

911

667

538

495

447

416

372

396

427

609

750

674

555

641

667

544

447

401

372

354

14,256

460

2.95

3.40

28,280

Jan.

345

336

328

323

315

599

500

396

340

310

310

302

368

382

358

506

511

452

*416

387

363

345

336

310

282

266

262

259

233

205

10,871

351

2.25

2.59

21,560

Feb.

236

248

215

209

198

195

192

189

189

186

180

180

176

173

164

164

180

173

170

164

164

167

167

164

161

158

16T

164

158

5,245

181

1.16

1.25

10,400

Mar.

158

158

180

167

167

158

158

153

153

147

139

142

*142

139

*139

139

139

150

195

198

212

270

524

5l6

382

328

278

255

244

244

240

6,614

213

1.37

1.58

13,120

Apr.

222

212

205

205

198

195

189

183

192

233

323

411

533

654

694

*609

528

495

573

736

1,040

1.100

937

790

701

694

667

628

579

533

15,259

509

3.26

3.64

30,270

May

522

489

463

452

452

479

555

667

774

846

729

634

561

555

615

782

1,030

1,350

1,490

1,480

1,240

1,130

1,150

1,140

1,130

1,130

1,050

1,030

1,040

1*550

27,695

893

5.72

6.60

54,930

June

1,440

1,240

1,460

*1,510

1,150

973

910

1,120

1.760

1,760

1,380

1,130

1,040

1,070

1,140

1,110

1,040

1,130

1,330

1,170

982

1,000

1,040

878

806

910

1,170

1,110

937

830

34,526

1,151

7.38

8.23

68,480

July

806

814

838

814

886

894

798

886

*1,050

1.140

1,090

1,110

1,110

982

854

822

798

822

910

1,000

973

862

830

822

758

660

603

544

511

489

479

25,955

837

5.37

6.19

51,480

Aug.

458

550

484

437

427

437

442

432

432

427

411

422

442

447

452

427

377

358

377

391

401

396

391

377

372

349

*340

310

302

298 

278

12 , 444

401

2.57

2.97

24,680

Sept.

276

262

240

219

205

198

198

212

215

295

340

274

233

212

202

198

195

192

192

202

205

192

180

189

248

368

306

251

270

274

7,043

235

1.51

1.68

13,970

Calendar year 1955: Max 5,060 Min 146 Mean 420 Cfsm 2.69 In. 36.58 Ac-ft 304,400

Water year 1955-56: Max 5,060 Min 139 Mean 522 Cfsm 3.35 In. 45.57 Ac-ft 379,000

___________ 3 (8 p.m.) 6,750 cfs (7.28 ft); June 3 (8:30 p.m.) 1,820 

10 (1 to 2 a.m.) 1,860 cfs (s.OO ft).

Peak discharge (base. 1.700 efs).--Ho

cfs (4.97 ft); Jun

* Discharge measurement made on this day.
SNOW CREEK BASIN 37

Snow Creek near Maynard, Wash.

Location. Lat 47°56'30", long 122°53'05 M , in SE£ sec. 2, T. 28 N., R. 2 W., on left bank 

600 ft upstream from Andrews Creek and 3-£ miles south of Maynard.

Drainage area.--13.2 sq mi.

Records available.--May 1952 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 180 ft (from topographic map).

Extremes. Maximum discharge during year, 216 cfs Jan. 6 (gage height, 2.89 ft); minimum, 

2.7 cfs Sept. 6-9 (gage height, 1.47 ft).

1952-56: Maximum discharge not determined, probably occurred during period of 

doubtful gage-height record Feb. 13-21, 1954; minimum, 1.6 cfs Oct. 20, 1952; minimum 

gage height, 1.22 ft Sept. 18, 19, Oct. 16-20, 1952.

Remarks. Records fair except those for periods of ice effect or doubtful or no gageheight record, which are poor. Some small diversion for irrigation. No regulation.

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. 27 to Dec. 24)

1.5

1.6

1.7

1.8

2.7 

5.4 

9.5

15

2.0 

2.2 

2.4 

2.7

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

Cfsm

In.

Ac-ft

Oct.

3 1

ITT

3.1

3.4

3.4

3.4

3.4

8.2

10

5.8

4.8

4.5

4.2

3.9

3.9

3.6

3.4

3.4

3.6

3.9

3.6

3.4

3.4

3.6

8.2

8.6

5.8

5.4

6.1

6.4 

5.4

146.0

4.71

0.357

0.41

290

Nov.

*5.4

15

57

52

37

25

19.5

16.5

14.5

13.5

13.5

13

b!3

b!2.5

12

12

12

12

12.5

13

12.5

12

20

b35

50

48

41

41

42

42

724.4

24.1

1.83

2.04

1,440

Dec.

*40

35

30

28

26

31

34

35

33

29

34

41

34

29

27

24

23

20

25

59

102

110

93

87

145

98

70

51

36

30 

25

1,484

47.9

3.63

4.18

2,940

Jan.

25

32

36

38

66

102

80

60

45

35

30

40

55

50

60

80

»75

65

55

45

40

40

38

35

31

29

27

25

23

21 

22

1,403

45.3

3.43

3.95

2,780

Feb.

19

18

17

17

16

16

16

16

15

11

14

14

18

15

14

14

14

15

17

19

11

20

19

17

16

16

15

18

18

478

16.5

1.25

1.35

948

Mar.

17

25

30

28

24

21

20

18

17

16

15

14.5

*14.5

14

14

13.5

13.5

14

19

20

34

48

82

77

62

54

45

41

43

41 

42

937.0

30.2

2.29

2.64

1,860

Apr.

36

37

35

34

34

31

31

35

40

46

61

61

64

67

64

56

48

*47

50

58

68

64

54

47

43

50

37

34

30

SI

1,379

46.0

3.48

3.89

2,740

May

25

24

23

23

24

24

27

29

29

M

30

26

22

20

20

20

21

21

20

18.5

16.5

14.5

13.5

12.5

11.5

11

11.5

*11

10

9.0

612.1

19.7

1.49

1.72

1,210

June

8.2

8.2

11

16.5

17

15

13.5

12

12.5

25

27

21

17.5

15.5

21

21

21

21

31

66

43

33

24

22

19.5

17.5

16.5

15

14

12.5

617.9

20.6

1.56

1.74

1,230

July

11

11.5

11.5

10.5

10

10.5

10

9.0

7.2

7.2

7.2

6.8

6.1

6.1

6.4

6.1

5.1

4.5

*4.5

4.8

4.5

4.2

3.6

3 .4

179

3.9

3.6

3.6

3.6

3.6 

3.6

198.5

6.40

0.485

0.56

394

Aug.

3.9

11

7.7

5.8

4.8

4.5

3.9

3.6

3.6

3.6

3.6

3.6

3.4

3.4

3.6

4.2

3.9

3.6

3.4

3.1

g.9

2.9

2.9

3.1

5.8

5.4

4.2

4.2

3.9

4.2 

3.9

131.6

4.25

0.322

0.37

261

Sept.

3.9

3.6

3.4

*3.1

2.9

1*2

2.7

2.7

2.9

3.4

6^1

6.4

4.2

3.9

3.6

3.6

3.4

3.4

3.4

3.4

3.4

3.4

3.1

3.1

3.1

3.6

4.5

3.9

4.2

4. 8

110.1

3.67

0.278

0.31

218

Calendar year 1955 : Max 145 Min 3.1 Mean 19.8 Cfsm 1.50 In. 20.31 Ac-ft 14,300

Water year 1955-56 : Max 145 Min 2.7 Mean 22.5 Cfsm 1.70 In. 23.16 Ac-ft 16,310

Peak discharge (base. 100 cfs). Dec. 25 (2 p.m.) 180 cfs (2.74 ft); Jan. 6 (1:30 a.m.) 216 cfs 

(2.89 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. Doubtful or no gage-height record Nov. 14-23, Jan. 7-15, Jan. 18 to Mar. 12; discharge 

estimated on basis of records for nearby stations.
38 CHIMACUM CREEK BASIN

Chlmacum Creek near Chlmacum, Wash.

Location. La t 47°58 I 25", long 122°46'35", in SW£ sec. 26, T. 29 N. , R. 1 W., on right 

bank 100 ft downstream from culvert, 3 miles south of Chimacum, and Sir miles upstream 

from mouth of East Fork.

Drainage area.--12.6 sq mi.

Records available.--June 1952 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 140 ft (from topographic map).

Extremes.--Maximum discharge during year, 222 cfs Jan. 6 (gage height, 5.69 ft); minimum, 

0.2 cfs July 7; minimum gage height, 1.37 ft Oct. 1-3.

1952-56: Maximum discharge, that of Jan. 6, 1956; minimum, 0.2 cfs Aug. 2, 1953, 

July 7, 1956; minimum gage height, 1.11 ft Aug. 2, 1953.

Remarks.--Records good except those below 10 cfs, which are fair, and those for periods of 

indefinite stage-discharge relation or no gage-height record, which are poor. Some 

regulation and diversions during summer months for irrigation.

Rating tables, water year 1955-56, except period of indefinite stage-discharge

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

(Shifting-control method used Nov. 30 to Dec. 17)

Oct. 1 to Dec. 19 Dec. 20 to Sept. 30

1.3

1.4 

1.6

2.7 

4.6 

9.4

1.9 

2.3 

2.9

1.6

1.7 

2.0 

2.5

1.2

2.6

10.5

28

3.0 

4.0 

5.6

100

214

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

Day

1

2

3

4

5

6

7

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.

4^0

4.0

4.2

*4.2

4.2

4.2

4.4

8.0

~8.0 15

6.6

5.9

5.6

5.4

5.4

5.2

5.1

5.1

5.2

5.4

5.2

5.2

5.2

5.3

9.0

10

8.2

7.2

7.6

8.0

7.0

193.0

6.23

0.494

0.57

383

Nov.

*6.4

23

29

34

26

16

11.5

9.9

8.6

7.9

7.6

6.9

5.3

5.5

5.1

4.9

5.1

8.5

17

26

16.5

16.5

36

44

45

54

47

33

25

22

603.2

20.1

1.60

1.78

1,200

Dec.

*25

20

16

13.5

16.5

51

44

55

42

31

29

28

21

16

15

16

14.5

e!6

e27

128

166

165

129

140

181

175

123

77

50

35

25

1,890.5

61.0

4.84

5.58

3,750

Jan.

38

85

106

110

151

211

ITS

107

104

93

77

64

60

52

68

93

65

54 *52

48

45

41

42

41

36

32

28

26

25

23

11

2,170

70.0

5.56

6.40

4,300

Feb.

17.5

17

17

18

19.5

22

22

21

19

18

18.5

28

24

21

17

14.5

17

17.5

58

90

91

72

52

42

39

40

36

42

38

948.5

32.7

2.60

2.80

1,880

Mar.

33

42

~93 100

72

50

45

44

40

34

30

27

*29

28

25

23

22

21

20

ii

34

33

47

37

34

31

26

23

21

20

19

1,122

36.2

2.87

3.31

2,230

Apr.

TB" 18

17

16.5

15.5

15

14.5

14

13

12.5

11.5

11

10.5

10

10

*10.5

11

9.6

8.8

8.1

7.9

7.7

7.6

7.5

7.4

7.0

7.1

7.2

7.5

7.0

328.9

11.0

0.873

0.97

652

May

6.6

6.5

6.4

7.0

675

6.2

6.1

5.8

5.5

5.9

6.3

5.9

5.5

5.1

4.9

4.7

4.5

4.4

4.4

4.4

4.4

4.3

4.3

4.4

4.3

4.4

4.5

*4.2

"3 4.0 o

4. 2

4.0

159.6

5.15

0.409

0.47

317

June

4.0

3.8

973

*11.5

I?_

11

9.3

8.1

7.2

13

12.5

9.3

7.5

6.7

7.2

7.8

6.7

6.7

9.3

10.5

9.0

8.1

7.2

7.0

6.7

6.2

5.9

5.9

5.7

5.7

241.8

8.06

0.640

0.71

480

July

5.2

5.2

5.2

5.2

5.2

5.4

O5

3.8

*4.0

4.2

4.0

3.5

3.8

4.0

3.8

3.5

2.6

2.3

575

2.6

2.8

3.1

3.1

2.6

2.5

2.3

2.3

2.5

2.6

2.8 2 8

109.4

3.53

0.280

0.32

217

Aug.

2.8

7.0

5.4

4.4

3.8

3.5

3.5

3.3

3.3

3.3

3.3

3.3

3.3

3.3

4.0

4.2

3.8

3.3

3.3

3.3

3.1

3.1

3.1

3.3

3.3

3.3

*3.5

3.5

3.1

3.1

2.6

110.4

3.56

0.283

0.33

219

Sept.

3.1

3.1

3.1

3.1

2.6

2.8

3.1

2.8

3.3

3.8

6.7

574

4.2

4.0

4.2

4.4

4.4

4.4

4.4

4.9

4.4

4.4

4.2

4.4

4.4

5.2

5.7

5.7

5.2

4.9

126.3

4.21

0.334

0.37

251

Calendar year 1955: Max 181 Min 2.2 Mean 16.9 Cfsm 1.34 In. 18.17 Ac-ft 12,210

Water year 1955-56: Max 211 Min 2.3 Mean 21.9 Cfsm 1.74 In. 23.61 Ac-ft 15,880

p

(5 

104

.ter year 1955-56: Max 211 Min 2.3 Mean 21.9 Cfsm 1.74 In. 23.61 Ac-ft 15,880

Peak discharge (base. 90 efs).--Dee. 21 (10:30 p.m.) 180 cfs (5.19 ft); Dec. 25 (12 p.m.) 192 cfs 

.34 ft); JanT 6 (2 p.m.) 222 cfs (5.69 ft); Jan. 9 (4:30 p.m.) 117 cfs (4.28 ft); Jan 15 (12 p.m.) 

4 cfs (4.06 ft); Feb. 20 (10 p.m.) 98 cfs (3.97 ft); Mar. 3 (3 a.m.) 108 cfs (4.13 ft). 

* Discharge measurement made on this day.

discharge estimated on basis of 

trearas.
LITTLE QUILCENE RIVER BASIN 39

Libtle Quilcene River near Quilcene, Wash.

Location. La t 47°50'15", long 122° 53' 10", in NEi;- sec. 14, T. 27 N., R. 2 W., on left bank 

60 ft downstream from bridge on 0. S. Highway 101, It mile!les northwest of Quilcene, and

la miles upstream from mouth. 

Drainage area. 19.6 sq mi. 

Records available.--August 1926 to October 1927, July 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 90 ft (from topographic map). Aug. 25, 

1926, to Oct. 4, 1927, staff gage at site 120 ft upstream at different datum.

Average discharge.--6 years (1926-27, 1951-56), 55.3 cfs (40,040 acre-ft per year).

Extremes. Maximum discharge during year, 545 cfs Jan. 5 (gage height;, 3.60 ft); minimum, 

 T3~cTs Oct. 7, 23, 24 (gage height, 0.96 ft).

1926-27, 1951-56: Maximum discharge, 820 cfs Feb. 13, 1954; maximum gage height,

4.40 ft Feb. 13, 1954 (backwater from debris); minimum discharge, 4.1 cfs Sept. 1,

1926 (gage height, 0.86 ft, site and datum then in use).

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

Undetermined amount of inflow at times during summer of 1956 from drainage of Lords 

Lake during period of construction of dams at the two lake outlets. Some diversion 

for irrigation. Slight regulation at times from unknown source.

Revisions (water yearsJ.--WSP 1216: Drainage area. WSP 1316: 1927(M).

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

in cubic feet per second) 

(Shifting-control method used July 28 to Sept. 30))

Oct. 1 to Nov. 3 

9.5

Nov. 4 to Sept. 30

0.9 

1.2 

1.8 

2.5

92

211

0.9 

1.3 

2.0 

3.1

12

42

133

375

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

Day

1

2

3

4

5

6

7

8

9

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.

13.5

13.5

13.5

14.5

13.5

13.5

13.5

32

34

24

20

18

17

16

15.5

15

14.5

14.5

15

15

14.5

13.5

13.5

14.5

25

26

17.5

*15

19

24

21

549.5

17.7

0.903

1.04

1,090

Nov.

18

53

210

216

150

106

87

73

63

56

53

a50

a47

a43

a39

a36

a38

a42

a46

49

46

45

52

101

150

130

112

*108

105

98

2,422

80.7

4.12

4.60

4,800

Dec.

92

83

74

67

64

71

75

85

83

79

89

96

84

76

71

64

59

5459-

124

203

230

176

179

356

271

183

133

111

98

85

3,574

115

5.87

6.78

7,090

Jan.

84

95

101

108

229

334 193"

138

116

104

105

136

140

128

183

179

152

a!40

a!30

a!20

allo

a!05

alOO

a92

*a85

75

70

65

61

53

3,787

122

6.22

7.19

7,510

Feb.

50

49

48

47

45

45

45

44

41

40

39

50

47

42

38

39

39

38

43

49

54

53

49

47

45

43

42

49

49

1,309

45.1

2.30

2.48

2,600

Mar.

47

57

106

89

73

63

60

56

52

49

45

44

*43

40

40

39

41

47

58

62

102

135

217

195

163

138

116

105

99

96

92

2,569

82.9

4.23

4.87

5,100

Apr.

84

80

76

75

73

68

65

74

76

89

122

130

142

157

152

133

114

110

*123

155

197

178

143

127

120

119

110

101

98

89

3,380

113

5.77

6.41

6,700

May

80

76

74

73

75

80

95

102

102

112

98

83

74

73

79

92

104

112

110

99

83

78

78

74

70

71

73

*65

67

73

74

2,599

83.8

4.28

4.93

5,160

June

78

70

82

99

92

83

75

74

78

116

123

101

88

80

98

95

94

89

95

179

159

127

108

94

83

78

74

70

84

73

2,839

94.6

4.83

5.39

5,630

July

65

B5

63

60

60

60

52

49

47

46

44

45

44

42

40

38

36

35

*34

33

32

31

31

30

29

28

28

28

27

2~6"

1,274

41.1

2.10

2.42

2,530

Aug.

26

38

37

29

27

27

26

24

24

24

24

23

22

22

22

22

22

21

20

20

19.5

19.5

18

18.5

27

22

21

22

20

19 5

18

720.0

23.2

1.18

1.37

1,430

Sept.

17.5

17.5

17

*16

16

15.5

15.5

15.5

15.5

18.5

22

71

18

17

17

16

16

15.5

15.5

15.5

15.5

15

14.5

1475

14.5

17

18

17

17

17.5

498.5

16.6

0.847

0.95

989

Calendar year 1955: Max 356 Min 13 Mean 52.0 Cfsm 2.65 In. 36.04 Ac-ft 37,680

Water year 1955-56: Max 356 Min 13.5 Mean 69.7 Cfsm 3.56 In. 48.43 Ac-ft 50,630

Peak discharge (base, 500 cfs).--Jan. 5 (11:30 p.m.) 545 cfs (3.60 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and records for 

stations on nearby streams.

467Z40 O -58 -4
40 DUCKABUSH RIVER BASIN

Gage . Water- stage recorder. 

T929.

Duokabush River near Brinnon, Wash.

Location.-- La t 47°41'00", long 123°00'40", in Sw£sw£ sec. 1, T. 25 N., R. 3 W., on left 

bank 4j miles upstream from mouth and 5 miles west of Brinnon.

Drainage area. --66. 5 sq mi.

Records available. --August to December 1910 (gage heights only), December 1910 to December 1911, June 1938 to September 1956. Published as "near Duckabush" 1910-11.

Datum of gage is 241.49 ft above mean sea level, datum of 

Aug. 19, 1910, to Dec. 31, 1911, staff gage at same site at different datum.

Average discharge. --18 years (1938-56), 406 cfs (293,900 acre-ft per year).

Extremes . Maximum discharge during year, 5,800 cfs Nov. 3 (gage height, 8.39 ft), from 

rating curve extended above 2,800 cfs on basis of slope-area determination at gage 

height 10.06 ft; minimum, 87 cfs Oct. 2, 3 (gage height, 1.92 ft).

1910-11, 1938-56: Maximum discharge, 8,960 cfs Nov. 26, 1949 (gage height, 10.06 

ft), from rating curve extended above 1,800 cfs on basis of slope-area determination 

of peak flow; minimum, 45 cfs Oct. 26, 28, 29, 1942; minimum gage height, 1.32 ft 

Sept. 30, 1939.

Remarks. --Records excellent. No regulation or diversion above station. 

Revisions. WSP 1216; Drainage area.

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

in cubic feet per second)

Oct. 1 to Nov. 3 Nov. 4 to Sept. 30

1.8 

2.0 

2.3 

2.6 

3.0 

3.5

67

101

168

257

408

655

4.0 

5.0 

6.0 

7.0 

8.0

960

1,770

2,750

3,900

5,230

2.0 118

2.3 193

2.6 286

3.0 450

3.5 720

4.0 1,050

5.0 1,860

6.2 3,010

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

Day

1

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16 

17

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Ibtal

Mean

Cfsm

In.

Ac-ft

Oct.

88

87

88

107

119

99

128

486

628

437

313

368

356

352

302

254 

235

222

198

173

160 

150

141

339

1,190

590

421

*412

752

590

429

10,214

329

4.95

5.71

20,260

Nov.

356

998

4,890

*2,920

1,300

B54

660

580

550

560

441

357

330

297

276

273 

256

270

283

283

263 

256" 247

462

606

510

575

*654

600

515

21,416

714

10.7

11.98

42,480

Dec.

470

387

338

304

286

308

315

349

338

322

733

938

590

445

370

330 

300

276

286

720

952 

1,040

720

606

1,100

822

545

400

330

297

270

15,487

500

7.52

8.66

30,720

Jan.

256

276

293

349

626

864

450

322

283

256

404

520

708

495

630

1.130 

720

702

590

530

480 

455

445

378

*334

308

273

253

231

213

193

13,967

451

6.78

7.81

27,700

Feb.

IBS' 190

174

169

164

164

158

156

151

148

148

151

148

144

130

130 

134

132

139

139

139 

141

136

132

125

118

TTs

156

161

4,280

148

2.23

2.39

8,490

Mar.

185

238

308

210

250

210

188

185

169

158

144

139

130

125

*125

123

1ST

171

247

253

530 

726

~SSS 896

510

445

357

326

338

365

357

9,208

297

4.47

5.15

18,260

Apr.

311

290

266

260

256

238

228

22T

234

330

520

612

714

854

822

708 

595

575

*696

966

1.510 

1,270

1,040

882

847

868

840

744

666

606

18,776

626

9.41

10.50

37,240

May

585

575

560

550

565

600

714

889

1,060

1,110

882

726

624

612

738

1,040 

1,380

1,700

1.850

1,680

1,340 

1,250

1,380

1,310

1,190

1,220

1,100

1,020

1,080

*1,390

1,620

32,340

1,043

15.7

18.09

64,150

June

1,390

1,210

1,380

1,420

1,060

903

1,060

1,560

2,040

1,650

1,300

1,040

966

1,070

1,130

1,010 

952

1,000

1,150

994

840 

868

889

750

690

774

1,000

973

847

720

32,636

1,088

16.4

18.25

64,730

July

672

732

756

750

868

834

738

822

994

1,080

1,020

1,020

1,010

868

768

750 

756

868

*882

952

882 

750

702

714

672

590

545

490

450

418

404

23,757 766"

11.5

13.29

47 , 120

Aug.

374

400

387

349

338

342

353

345

342

334

326

326

330

330

330

300 

273

260

263

266

270 

270

260

253

256

234

222

208

202

196

188

9,127

294

4.42

5.10

18,100

Sept.

185

177

166

*154

148

141

139

139

146

250

260" 311

202

177

164

151 

146

139

134

141

146 

130

120

Tf7

247

270

213

188

242

260

5,463

182

2.74

3.06

10,840

Calendar year 1955: Max 4,890 Min 87 Mean 388 Cfsm 5.83 In. 79.18 Ac-ft 280,800

Water year 1955-56: Max 4,890 Min 87 Mean 537 Cfsm 8.08 In. 109.99 Ac-ft 390,100

Peak discharge (base, 2.500 cfs). Nov. 3 (7:30 p.m.) 5,800 ofs (8.39 ft). 

* Discharge measurement made on this day
HAMMA HAMMA RIVER BASIN 41

Harnma Hamma River near Eldon, Wash.

Location. Lat 47°35'20", long 123°07'00", in NWir sec. 7, T. 24 N., R. 3 W., on left bank 

a quarter of a mile downstream from Watson Creek, 4? miles northwest of Eldon, and 

6 miles upstream from mouth.

Drainage area.--51.3 sq mi.

Records available.--June 1951 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 510 ft (from topographic map).

Average discharge.--5 years, 384 cfs (278,000 acre-ft per year).

Extremes.--Maximum discharge during year, 4,980 cfs Nov. 3 (gage height, 6.58 ft), from 

 rating curve extended above 1,100 cfs; minimum, 75 cfs Oct. 2-4; minimum gage height,

0.63 ft Mar. 15, 16.

1951-56: Maximum discharge, that of Nov. 3, 1955; minimum, 42 cfs Oct. 21-23,

Nov. 9, 1952; minimum gage height, that of Mar. 15, 16, 1956.

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

No regulation or diversion above station.

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

In cubic feet per second) 

(Shifting-control method used Nov. 6 to Mar. 21)

Oct. 1 to Nov. 2

0.8 75

1.0 124

1.2 184

1.5 295

2.0 530

2.5 800

Nov. 3 to Sept. 30

1.0

1.5 

2.0

123

225

455

740

2.5 

3.0 

4.0 

5.0 

6.0

1,070

1,420

2,250

3,200

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 

25

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

80

77

75

82

89

82

89

315

555

450

551

572

556

308

275

256

218

201

187

175

162

156 

147

259

765

555

 594

590

573

535

412

8,859

285

5.56

6.41

17,530

Nov.

344

763

5.980

2,780

1,240

812

620

532

477 

455

588

349

317

299

282

257

241

241

245

255

229

214 

225

558

552

466

494

576

548

*477

18,994

633

12.3

13.77

37,670

Dec.

429

364

308

274

253

261

261

295

278 

274

662

752

510

593

540

299

265

249

257

634

860

895 65~6~

543

776

650

472

369

313

274

245

13,411

433

8.44

9.72

26,600

Jan.

233

241

255

331

515

598

383

291

253

221

313

445

576

455

553

875

632

638

576

494

459

424

408

564

*317

274

245

221

203

181

168

12,120

391

7.62

8.79

24,040

Feb.

a!60

al55

a!50

a!50

a!45

a!40

a!40

a!35

al50 

a!50

a!25

a!20

allS

allo

a 105

101

98

95

101

98

101

95

90

90

85

85

81

106

109

3,543

115

2.24

2.42

6,630

Mar.

117

161

241

206

171

138

132

123

112 

101

93

90

85

81

78

78

85

109

178

210

 424

674 

794

674

532

466

388

345

364

413

398

8,061

260

5.07

5.84

15,990

Apr.

345

308

286

278

278

265

255

255

257 

526

494

592

668

758

746

656

565

558

 626

824

1,100

1,110 

958

842

806

824

800

722

656

604

17,758

591

11.5

12.86

35,180

May

570

560

548

543

548

576

662

788

902 

944

830

710

620

598

680

895

1,170

1,440

1,560

1,410

1,160

1,070 

1,150

1,090

979

979

902

830

874

*1,100

1,290

27,978

905

17.6

20.28

55,490

June

1,150

1,000

1,060

1,150

916

806

925

1,290

1.660 

1,360

1,120

895

812

860

923

854

806

806

902

830

740

722 

728

656

598

626

740

758

698

614

«

27,003

900

17.5

19.58

53,560

July

582

609

652

614

704

698

626

668

752 

794

788

794

788

710

626

609

609

652

 662

680

656

592

560

554

552

494

455

419

393

374

554

18,960

612

11.9

13.75

37,610

Aug.

331

345

340

308

295

295

291

286

282 

278

274

269

269

265

261

255

233

221

218

214

214

214 

206

203

199

188

181

171

164

161

151

7,580

245

4.78

5.50

15,030

Sept.

148

142

135

129

123

 120

120

120

117 

154

214

192

164

148

138

129

126

120

117

117

117

115 

112

109

T58

154

145

132

148

164

4,107

137

2.67

2.98

8,150

Calendar year 1955: Max 3,980 Min 75 Mean 314 Cfsm 6.12 In. 83. OO Ac-ft 227, 1OO

Water year 1955-56: Max 3,980 Mln 75 Mean 459 Cfsm 8.95 In. 121.90 Ac-ft 335,500

Peak discharge (base. 1.7OO efs). Nov. 3 (8 p.m.) 4.98O cfs (6.58 ft); June 8 (11:45 p.m.) 

1,770 cfs (3.44 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and records for 

stations on nearby streams.
42 SKOKOMISH RIVER BASIN

North Fork Skokomish River below Staircase Rapids, near Hoodsport, Wash.

Location. Lat 47°30'55", long 123°19'45", in NW^ sec. 4, T. 23 N., R. 5 W., on left bank 

lir miles upstream from Lake Cushman, 2 miles upstream from Dry Creek, and 11? miles 

northwest of Hoodsport.

Drainage area.--58.1 sq mi.

Records available.--July 1924 to September 1956.

Gage. Water-stage recorder. Datum of gage is 762.26 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. Prior to Nov. 1, 1934, water-stage recorder 

and Nov. 1, 1934, to Nov. 10, 1941, staff gages, on right bank at same datum.

Average discharge. 32 years, 485 cfs (351,100 acre-ft per year).

Extremes. Maximum discharge during year, 13,600 cfs Nov. 3 (gage height, 10.00 ft); minimum, 88 cfs Oct. 3, 4 (gage height, 1.77 ft).

1924-56: Maximum discharge, 27,000 cfs Nov. 5, 1934 (gage height, 14.4 ft, from 

high-water mark), from rating curve extended above 9,800 cfs on basis of slope-area 

determination at gage height 12.2 ft; minimum recorded, 16 cfs Sept. 23, 1930 (gage 

height, 1.12 ft).

Remarks. Records good except those for period of shifting control, which are fair. No 

regulation or diversion above station.

Revisions (water years). WSP 1246: Drainage area. WSP 1286: 1932, 1935, 1937(M), 

1942(M), 1945(M), 1947(P), 1948(M).

Rating tables, water year 1955-56, except period of shifting control (gage 

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

Oct. 1 to Nov. Z Nov. 3 to Sept. 30

1.7 

1.9 

2.2 

Z.5 

Z.8

85

122

192

280

390

3.2 

3.6 

4.0 

4.5 

5.5

575

820

1,120

1,600

2,780

1.9 

2.2 

2.5 

3.0 

3.5 

4.0

115

199

310

555

860

1,240

4.5 

5.0 

6.0 

7.0 

8.0 

9.0

1,700

2,200

3,500

5,250

7,450

10,200

Discharge, In cubic feet per second, water year October 1955 bo 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

Of sm

In.

Ac-ft

Oct.

92

90

55

165

133

106

200

1,080

1,250

690

530

624

525

470

386

318

294

270

242

222

208

195

187

820

2,650

992

*716

814

1,510

953

666

17,488

564

9.71

11.19

34,690

Nov.

530

1,960

*9,980

4,250

*1,670

1,130

681

784

754

712

594

495

475

435

391

378

364

378

386

373

337

310

'66T 302

937

778

895

1,030

930

*825

33,925

1,131

19.5

21.72

67,290

Dec.

760

634

533

465

445

470

460

460

420

445

1,340

1,300

772

604

506

455

405

378

430

993

1,240

1,460

986

766

972

874

652

522

455

410

573

20,985

677

11.7

13.43

41,620

Jan.

355

337

324

382

485

688

465

373

332

294

485

604

797

610

914

1.460

972

916

797

694

652

658

646

560

480

425

373

346

314

286

 270

17,294

558

9.60

11.07

34,300

Feb.

252

244

237

230

223

216

209

202

193

193

193

199

193

187

171

171

168

165

171

168

162

157

148

143

140

135

135

140

143

5,288

182

3.13

3.38

10,490

Mar.

190

255

346

255

237

193

187

184

165

151

143

140

132

128

125

122

122

135

*177

196

442

772

965

760

572

485

415

386

445

470

450

9,745

314

5.40

6.24

19,330

Apr.

386

337

302

294

282

266

255

'255" 248

310

460

610

772

972

972

818

712

700

832

1,140

1,560

1,500

1,260

1,120

*1,070

1,100

1,070

937

839

772

22,151

738

12.7

14.18

43,940

May

742

730

706

7T5

760

832

972

1,210

1,440

1,460

1,150

937

811

825

1,010

1,380

1,740

2,090

2.260

2,000

1,570

1,480

1,620

1,560

1,440

1,470

1,300

1,200

1,400

*1,700

1,900

40,413

1,304

22.4

25.87

80,160

June

1,540

1,360

1,510

1,440

1,140

1,160

1,530

2,440

2,750

1,970

1,550

1,280

1,230

1,410

1,380

1,200

1,160

1,190

1,410

1,180

1,030

1,060

1,050

916

846

951

1,180

1,160

1/030

895

39,948

1,332

22.9

25.57

79,240

July

860

951

972

944

1,560

1,050

937

1,060

1,250

1,280

1,210

1,180

1,190

986

867

888

923

*993

1,040

1,060

951

818

778

797

754

664

599

538

506

490

460

28,356

915

15.7

18.15

56,240

Aug.

435

135" 465

391

396

415

415

400

400

386

368

368

368

368

350

306

278

278

282

282

290

282

270

252

244

230

216

199

196

190

184

9,939

321

5.52

6.36

19,710

Sept.

180

165

151

143

140

*138

138

132

140

320

350

237

1S4

168

157

148

143

138

135

160

154

130

122

555

459

425

263

226

400

337

6,188

206

3.55

3.96

12,270

Calendar year 1955: Max 9,980 Mln 90 Mea.i 505 Cfsm 8.69 In. 117.89 Ac-ft 365,300

Water year 1955-56: Max 9,980 Mln 90 Mean 688 Cfsm 11.8 In. 161.12 Ac-ft 499,300

Peak discharge (base, 5,000 efs).~Oct. 25 (5:30 a.m.) 3,520 cfs (6.03 ft); Nov. 3 (6:30 p.m.) 

3,600 cfs (10.00 ft); June 8 (5:30 p.m.) 3,470 cfs (5.98 ft).

Discharge measurement made on this day. 

Note. Shifting-control method used Nov. 4-24.
SKOKOMISH RIVER BASIN 43

North Fork Skokomish River near Hoodsport, Wash.

Location. Lat 47°25'20", long 123°13'10", in SW£ sec. 5 T. 22 N., R. 4 W., at city of 

Tacoma dam, 4 miles northwest of Hoodsport.

Drainage area. 93.7 sq mi.

Records available.--August 1910 to September 1911 (fragmentary) and February 1913 to September 195E5 (monthly discharge only) in reports of Geological Survey. October 1911 to 

September 1953 (monthly discharge only) in State Water-Supply Bulletin 6.

Gage. Discharge determined from record of power output and Lake Cushman elevations, plus 

spillway discharge when present. Prior to Sept. 23, 1911, staff gage and February 1913 

to September 1923, water-stage recorder, at approximately same site at datum 486.4 ft 

above mean sea level (levels by city of Tacoma) prior to Sept. 2, 1918, and at datum 

5.00 ft higher Sept. 2, 1918, to September 1923. October 1923 to September 1930, waterstage recorder 1 mile downstream at different datum.

Average discharge.--45 years (1911-56), 738 cfs (534,300 acre-ft per year), adjusted for 

storage.

Extremes.--Hot determined since regulation began in Lake Cushman.

Remarks. Records fair. No diversion of consequence. Flow regulated in Lake Cushman 

since' October 1925 for power by city of Tacoma.

Cooperation. Records of power output and elevations of Lake Cushman furnished by city 

of Tacoma.

Revisions. WSP 1216: Drainage area.

Monthly discharge, water year October 1955 to September 1956

Month

Calendar year 1955 . . .

May.. ..................

July.... ...............

September. .............

Water year 1955-56...

Observed

Maximum 

(cfs)

1,490

6,860 

2,270

6,860

2,260 

1,500 

1,700 

860 

2,300 

2,350 

1,540 

800 

1,580

6,860

Minimum 

(cfs)

128 

318 

388

0

380 

255 

0 

0 

0 

623 

282 

0 

51

0

Mean 

(cfs)

611 

1,879 

1,149

740

1,114 

924 

938 

426 

997 

1,551 

951 

396 

789

975

Runoff 

In 

acre-feet

37,540 

111,800 

70,670

535,400

68,510 

53,130 

57,650 

25,320 

61,290 

92,290 

58,460 

24,370 

46,960

708, OOO

Change In

Lake Cushman 

(acre -feet)

+14, OOO 

-7,440 

+800

-4,480

+240 

-32,760 

-11,470 

+36,470 

+33,190 

+500 

+1,09O 

-3,430 

-31,750

-560

Adjusted for change In

Mean 

(cfs)

838 

1,755 

1,162

733

1,118 

354 

751 

1,038 

1,537 

1,559 

968 

341 

256

975

Per 

square 

mile

8.94 

18.7 

12.4

7.82

11.9 

3.78 

8.01 

11.1 

16.4 

16.6 

10.3 

3.64 

2.73

10.4

Runoff 

in 

Inches

10.31 

20.89 

14.30

106.23

13.76 

4.08 

9.24 

12.36 

18.91 

18.57 

11.92 

4.19 

3.04

141.57

Runoff 

in 

acre -feet

51,540 

104,400 

71,470

530,900

68,750 

20,370 

46,180 

61,790 

94,480 

92,790 

59. 550 

20,940 

15,210

707,500
44 SKOKOMISH RIVER BASIN

Deer Meadow Creek near Hoodsport, Wash.

Location.--Lat 47°25'00", long 123°13'30", in NWir sec. 8, T. 22 N., R. 4 W. , on left bank 

a quarter of a mile upstream from mouth and 4 miles west of Hoodsport.

Records available.--August 1950 to August 1951, October 1952 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 688.28 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947 (levels by city of Tacoma). Prior to Oct. 1, 

1952, at datum 0.48 ft higher.

Extremes.--Maximum discharge during year, 355 cfs Nov. 3 (gage height, 2.98 ft); minimum 

daily, 0.6 cfs Oct. 1-3, Sept. 19, 22-24, 26-30; minimum gage height, 0.17 ft Sept. 5.

1950-51, 1952-56: Maximum discharge, that of Nov. 3, 1955; minimum, 0.2 cfs 

Oct. 8-11, 1952.

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

Since October 1953, records include large part of flow of McTaggart Creek, from which 

water is diverted at city of Tacoma diversion dam in Nj sec. 7, T. 22 N., R. 4 W. 

When flow of McTaggart Creek exceeds about 80 cfs, there is undiverted spill over dam. 

For discharges of less than about 80 cfs the city allows up to 2 cfs to flow through 

pipe in dam and continue in McTaggart Creek, not to exceed the natural flow of the 

stream. No regulation.

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

In cubic feet per second)

0.5 

.6 

.7 

.9

1.1

Oct. 1 to Nov. 3, 

Sept. 14-30

0.5

1.0

2.0

5.8

12

1.4 

1.7 

2.0 

2.5 

2.8

184

265

Nov. 3 to Sept. 14

0.7

1.3

4.0

10

20

1.3 

1.7 

2.2 

2.7

171

282

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

Day

1

2

3

4

5

e

i

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

0.6

.6

.6

.8

.7

.7

.8

1.8

3.4

3.0

2.6

2.6

2.3

2.0

1.8

1.6

1.6

1.4

1.2

1.3

1.3

1.3

1.4

2.6

5.6

6.3

*7.1

7.4

14

T3.5

10

101.9

3.29

202

Nov.

7.4

27

*211

165

78

44

29

23

19

15.5

13.5

12

11

10

9.0

8.5

8.0

10

14

20

15

13

16

30

60

44

34

32

25

*23

1,026.9

34.2

2,040

Dec.

21

18.5

15.5

13.5

JL2

16

21

23

24

21

60

40

30

22

18

16

14

13

16

40

68

58

47

38

32

30

25

22

20

18

16

828.5

26.7

1,640

Jan.

15

17

21

30

62

45

35

28

24

22

21

20

19

18

38

54

42

35

31

28

26

28

30

*25

20

18

15.5

14

13

12.5

12.5

819.5

26.4

1,630

Feb.

12

TT.5

11

10

9.4

8.9

8.7

8.5

8.4

8.2

8.4

8.0

.8

.6

.4

.2

 2

.2

.7

8.4

8.7

8.5

8.4

9.0

9.2

9.0

9.0

10

12

257.3

8.87

510

Mar.

17

20

25

20

17

15

16

13

12

11

9.7

9.0

8.4

8.0

7.6

7.4

7.3

775

7.7

*8.0

19

51

84

60

48

41

29

26

34

54

47

739.6

23.9

1,470

Apr.

32

24

20

19

18

15.5

14.5

14

12.5

12.5

12.5

13

13

12.5

12

11

10.5

9.4

8.6

8.6

8.6

7.8

7.2

6.5

*5.9

5.4

4.9

4.4

3.1

372

350.1

11.7

694

May

2.9

3.1

3.2

37T

3.2

2.9

2.9

2.9

2.8

2.5

2.6

2.8

2.6

2.4

2.5

2.5

2.4

2.2

1.9

27?

2.2

2.0

2.0

2.1

2.1

2.2

1.9

2.1

1.9

1.9

1.9

75.9

2.45

151

June

2.1

1.9

27?

2.1

2.0

2.4

2.6

3.2

276

2.8

2.6

2.5

2.4

*2.5

2.4

2.2

2.2

2.1

2.1

2.1

2.0

1.9

1.9

2.0

1.9

1.9

2.0

2.0

2.0

2.0

66.6

2.22

132

July

2.1

2.1

1.9

1.9

2.2

2.1

2.2

2.2

2.1

2.1

1.8

1.9

1.1

1.0

1.3

1.7

1.6

*1.7

1.8

1.6

1.2

1.5

1.5

1.3

1.4

1.5

1.3

1.5

1.4

1.2

1.3

51.5

1.66

102

Aug.

1.3

2.1

T7f

1.5

1.4

1.3

1.2

1.3

1.2

1.2

1.3

1.3

1.2

1.2

1.2

1.2

1.3

1.3

1.1

1.1

1.2

1.3

1.1

1.0

1.0

1.0

1.0

1.0

1.0

.9 79"

37.8

1.22

75

Sept.

0.8

.8

.8

.8

*.8

.9

.9

.9

1.0

1.2

1.4

T7o

.9

.8

.9

.9

.8

.8

.6

7T

.7

.6

.6

.6

.7

.6

.6

.6

.6

.6

23.9

0.80

47

Calendar year 1955 : Max 211 Mln 0.6 Mean 8.97 Ao-ft 6,5OO

Water year 1955-56 : Max 211 Mln 0.6 Mean 12.0 Ac-ft 8,69O

* Discharge measurement made on this day.

Note. No gage-height record Nov. 12-24, Dec. 5 to Jan. 24, Feb. 1 to Mar. 19; discharge 

stimated on basis of records for stations on nearby streams.
SKOKOMISH RIVER BASIN 

North Pork Skokomish River near Potlatch, Wash.

45

Location. La t 47° 19'40", Long 123° 14'30", in NE^NWir sec. 7, T. 21 N., R. 4 W., on left 

bank 1 mile upstream from mouth, 6 miles southwest of Potlatch, and 7 miles downstream 

from city of Tacotna's Cashman Dam No. 2.

Drainage area. 117 sq mi, includes 99 sq mi above Cushman Dam No. 2 which is normally 

noncontributing.

Records available. March 1944 to September 1956.

Gage. Water-stage recorder. Datum of gage is 63.49 ft above mean sea level (levels by 

 city of Tacoma). Prior to Nov. 27, 1949 (destroyed by flood of Nov. 27, 1949), and

Mar. 18 to May 9, 1950, water-stage recorder at site 200 ft downstream at present

datum.

Extremes. Maximum discharge during year, 7,740 cfs Nov. 4 (gage height, 10.45 ft); minimum, 7.0 cfs Oct. I, 2, 3 (gage height, 2.30 ft).

1944-56: Maximum discharge, that of Nov. 4, 1955; minimum recorded, 1.3 cfs Sept. 5, 

14, 16, 1951 (gage height, 2.02 ft).

Remarks.--Records good except those below 10 cfs, which are fair. Entire flow of river 

normally diverted at Cushman Dam No. 2 to supply powerplant which discharges directly 

into sea (Hood Canal). Main portion of McTaggart Creek is diverted into Cushman 

Reservoir No. 2, and may bypass this station. Plow regulated by Lake Cushman (see 

p. 43) and by pondage in Cushman Reservoir No. 2, from which spill and releases are 

infrequent.

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

In cubic feet per second)

Oct. 1 to Nov. 3 Nov. 4 to Sept. 30

2.3 

2.6 

3.0 

3.5

4.0

7.0

22

64

164

320

4.5 520

5.0 770

6.5 1,810

8.5 3,770

3.1 

3.3 

3.6

5.5

10

17

27

41

78

155

4.0 

4.5 

5.0 

6.0 

7.0 

8.5 

10.0

295

5Z5

830

1,600

2,550

4,410

6,880

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

7.8

7.4

77T

16

18

13.5

16.5

93

138

125

96

100

82

67

56

48

42

43

38

34

32

30

28

*64

257

205

187

185

235" 269

162

2,699.6

87.1

5,350

Mov.

127

494

3,770

*6,650

3,820

2,280

1,820

1,320

1,140

1,100

881

158

128

118 Tie

131

128

161

216

199

176

161

196

534

664

455

366

295

*244

238

28,068

936

55,670

Dec.

230

206

176

158

155

199

224

259

248

234

380

371

255

202

173

155

137

131

W

291

514

564

35T

353

335

323

263

202

176

155

137

7,750

250

15,370

Jan.

146

167

238

407

425

485

319

248

220

188

199

199

199

188

303

3§8" 706

331

315

287

255

241

*234

224

199

176

155

143

134

120

115

7,964

257

15,800

Feb.

108

100

96

93

91

89

85

82

78

78

78

78

72

68

66

64

61

66

70

82

85

87

85

89

93

96

98

TTO" 170

2,581

89.0

5,120

Mar.

264

303

344

255

196

155

155

140

128

115

105

100

96

87

87

*87

91

98

108

134

280

420

864

f55

335

287

216

216

267

335

307

7,044

227

13,970

Apr.

238

188

161

146

128

118

115

102

98

96

89

85

82

78

76

72

68

64

62

58

56

55

*55

56

55

53

51

48

 J6 46

2,645

88.2

5,250

May

43

4T

41

41

41

40

38

37

37

35

35

34

33

33

31

30

30

28

28

28

27

27

26

26

26

26

26

25

*25

25

25

990

31.9

1,960

June

25

25

28

27

26

31

41

48

56

120

~60 146

41

35

31

30

28

27

28

27

Jf 26

25

25

25

24

24

25

43

44

28

1,169

39.0

2,320

July

23

24

22

21

*26_

25

23

21

21

20

20

20

19

19

19

18

17

17

17

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

15.5

1575"

15.5

587.0

18.9

1,160

Aug.

16.5

22

23

17

16.5

15.5

15.5

15.5

15

15

15

15

15

16.5

16.5

15

14

13.5

13

13.5

18

15

13

12

11.5

11.5

11.5

12

12

11.5

11.5

458.0

14.8

908

Sept.

10.5

10.5

10.5

10

10

9.6

*10

10

10.5

15

15.5

13.5

12

11.5

10.5

10.5

10.5

10

9.6

10.5

10

9.6

9.1

10.5

15

15.5

14

15

18

18

355.4

11.8

705

Calendar year 1955: Max 6,630 Mln 6.4 Mean 154 Ac-ft 111,400

Water year 1955-56: Max 6,630 Mln 7.4 Mean 170 Ac-ft 123,600

Discharge measurement made on this day.
SKOKOMISH RIVER BASIN

South Fork Skokomish River near Potlatch, Wash.

Location.--Lat 47°23'10", long 123°18'30", in NWv sec. 22, T. 22 N., R. 5 W., on right bank 

at head of canyon, 1 mile upstream from Rock Creek, 3 miles downstream from Brown Creek, 

and 7|- miles west of Potlatch.

Drainage area.--65.6 sq mi.

Records available.--October 1923 to September 1932, September 1946 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 456 ft (by barometer).

Average discharge.--19 years, 595 cfs (430,800 acre-ft per year).

Extremes.--Maximum discharge during year, 17,800 cfs Nov. 3 (gage height, 16.80 ft), from 

rating curve extended above 7,800 cfs; minimum, 107 cfs Oct. 1, 2 (gage height, 

1.06 ft).

1923-32, 1946-56: Maximum discharge, 19,300 cfs Nov. 26, 1949 (gage height, 17.75 

ft), from rating curve extended above 5,600 cfs on basis of logarithmic plotting; minimum, 38 cfs Sept. 15, 1926; minimum gage height, 0.74 ft Sept. 21, 22, 1953.

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

No regulation or diversion above station.

Revisions (water years). WSP 1216: Drainage area. WSP 1286: 1950 (P). WSP 1346: 1952.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Nov. 4 to Jan. 27)

1.0 

1.2 

1.5 

2.0 

2.5 

3.0 

3.5

100

125

170

265

386

556

785

4.0

5.0

6.0

7.0

9.0

11.0

15.0

1,070

1,730

2,580

3,600

5,980

8,750

14, 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

Cfstn

In.

Ac-ft

Oct.

108

T55

108

190

201

152

182

1,420

1,740

1,270

912

939

716

556

457

395

354

320

301

278

261

244

232

845

*5,600

1,580

1,200

1,290

1,890 

1,420

986

24,255

782

11.9

13.75

48,110

Nov.

796

2,190

14,400

6,830

2,450

1,560

1,260

1,080

962

878

796

725

664

610

572

552

529

606

790

920

800

700

720

1,800

*2,900

2,080

1,870

1,860

1,610 

1,420

54,930

1,831

27.9

31.14

109,000

Dec.

1,400

1,170

986

851

790

980

1,090

1,060

974

992

2,720

2,300

1,390

1,080

917

796

716

669

692

1,900

2,780

5,010

1,930

1,460

1,560

1,670

1,300

1,080

928 

807

721

40,719

1,314

20.0

23.08

80,760

Jan.

692

697

735

1,080

1,340

1,790

1,230

974

856

755

1,160

1,360

1,480

1,230

1,710

5,560

2,100

2,000

1,670

*1,510

1,410

1,400

1,340

1,130

956

824

716

637

572 

517

461

37,912

1,223

18.6

21.49

75,200

Feb.

454

43T

412

400

386

372

364

356

346

349

378

400

392

372

349

334

327

322

332

329

324

308

292

294

283

280

285

375

400

10,246

353

5.38

5.81

20,320

Mar.

726

1,010

1,150

807

619

510

492

441

398

367

349

336

324

310

301

294 59"5

344

478

*536

1,070

1,900

2,720

1,810

1,340

1,180

956

917

1,170 

1,300

1,200

25,653

828

12.6

14.54

50,880

Apr.

962

807

711

678

669

606

581

552

548

646

895

1,050

1,250

1,410

1,260

1,080

928

890

1,050

1,340

1.650

1,360

1,300

1,180

*1,160

1,180

1,120

986

895

818

29,762

992

15.1

16.87

59,030

May

775

770

740

755

802

873

939

1,090

1,220

1,190

980

824

730

721

S54

1,070

1,240

1,420

1.510

1,310

1,090

1,030

1,100

1,020

928

944

846

765

824 

986

1,090

30,416

981

15.0

17.24

60, 330

June

*900

796

862

868

706

765

1,220

1,920

2,570

1,480

1,120

917

846

962

956

862

740

711

796

711

632

606

595

556

503

506

540

580

550 

485

26,019

867

15.2

14.75

51,610

July

461

485

*488

467

750

652

517

525

540

560

540

515

506

461

409

592

598

412

409

412

392

359

334

329

322

305

287

272

257 

250

242

15,224

427

6.51

7.50

26,250

Aug.

256

252

261

25?

228

224

210

205

205

200

190

190

190

190

185

175

170

165

160

160

160

160

155

150

150

145

140

140

155 

150 150-

5,625

181

2.76

3.19

11,150

Sept.

125

125

120

120

*122

121

120

118

121

163

220

178

148

156

151

125

121

120

118

121

124

120

116

158

546

552

567

294

523 

548

6,001

200

3.05

3.40

11,900

Calendar year 1955: Max 14,400 Mln 99 Mean 673 Cfsm 10.3 In. 139.33 Ac-ft 487,500

Water year 1955-56: Max 14,400 Mln 108 Mean 833 Cfsm 12.7 In. 172.76 Ac-ft 604,500

Peak discharge (base, 5,800 cfs). Oct. 25 (5 to 7 a.m.) 4,560 cfs (7.86 ft); Nov. 3 (9 a.m.) 

17,800 cfs (16780 ft); Dec. 11 (8:30 p.m.) 4,220 cfs (7J26 ft); Jan. 16 (9:30 a.m.) 4,070 cfs 

(7.13 ft).

* Discharge measurement made on this day.

Note.--No gage-height record Nov. 20-25, Feb. 26, 27, June 27-29, July 9-11, Aug. 7 to Sept. 4; 

discharge estimated on basis of records for station near Union.
SKOKOMISH RIVER BASIN 47

South Pork Skokomlsh River near Union, Wash.

Location. Lat 47°20'30", long 123°16'30", in NE£ sec. 2, T. 21 N., R. 5 W., on right bank 

3^ miles upstream from confluence with North Pork and Vance Creek and 8 miles west of 

Union.

Drainage area. 79.6 sq mi.

Records available. August 1931 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 110 ft (by barometer). Prior to 

Sept. 19, 1931, staff gage at same site at datum 2.32 ft higher.

Average discharge. 25 years, 711 cfs (514,700 acre-ft per year).

Extremes. Maximum discharge during year, 17,900 cfs Nov. 3 (gage height, 8.76 ft), from 

rating curve extended above 9,100 cfs; minimum, 111 cfs Sept. 8, 9, 23, 24 (gage height, 

2.06 ft).

1931-56: Maximum discharge, 21,600 cfs Jan. 22, 1935, Nov. 26, 1949 (gage height, 

11.0 ft), from rating curves extended above 11,000 cfs and 4,400 cfs, respectively; minimum, 62 cfs Sept. 18, 1938; minimum gage height, that of Sept. 8, 9, 23, 24, 1956.

Remarks. Records good. No regulation or diversion above station.

Revisions (water years). WSP 1216: 1950, drainage area. WSP 1316: 1934(M), 1938(M).

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

in cubic feet per second) 

(Shifting-control method used Nov. 5 to Dec. 2o)

Oct. 1 to Nov. 2 Nov. 3 to Sept. 30

2.3 

2.5 

2.7 

3.0 

3.3

108

186

293

510

800

3.6 

4.0 

4.5 

5.0 

5.5

1,140

1,680

2,580

3,670

4,930

2.0 

2.2 

2.5 

2.8 

3.2 

3.6

90 

165 

310 

500 

830 

1,27O

4.0 

4.5 

5.0 

6.0 

7.0 

8.2

1,820 

2,650 

3,680 

6,400 

9,920 

15,1OO

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

Day

1

2

3

4

5

6

7

8

9

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.

122

T2T

122

182

225

169

186

1,520

3,100

1,520

987

1,040

780

582

470

394 

352

326

293

270

247 

235

225

795

4,060

*1,960

1,420

1,530

2,290

1,760

1,160

27,444

885

11.1

12.82

54,430

Nov.

899

2,470

14.900

8,080

3,210

2,080

1,590

1,350

1,160

1,060

952

860

794

749

704

677 

659

767

974

1,150

974 

860

880

2,480

3,480

2,740

2,350

*2,280

1,990

1,740

64,859

2,162

27.2

30.30

128,600

Dec.

1,700

1,370

1,150

985

930

1,140

1,300

1,300

1,170

1,170

3,070

2,840

1,640

1,270

1,080

963 

860

812

830

2,210

3,420 

5,530

2,380

1,800

1,900

2,030

1,570

1,280

1,100

974 

880

48,654

1,569

19.7

22.73

96,500

Jan.

860

880

985

1,440

1,780

2,370

1,520

1,200

1,040

930

1,270

1,590

1,720

1,440

2,080

4,480 

2,490

2,380

2,030

1,740

1,560 

1,570

1,530

*1,310

1,080

941

821

740

668

563

45,626

1,472

18.5

21.32

90,500

Feb.

528

507

486

472

451

437

424

406

394

388

430

458

444

424

394

382 

370

364

382

376

382 

364

*340

352

346

328

347

507

555

12,011

414

5.20

5.61

23,820

Mar.

961

1,350

1,600

1,050

767

618

610

542

493

444

418

388

376

364

346

340 

352

400

549

650

1,430 

2,580

3,700

2,460

1,730

1,540

1,220

1,170

1,540

1,740

1,590

33,318

1,075

13.5

15.57

66,090

Apr.

1,250

1,040

910

870

850

776

740

704

785- 686

1,060

1,230

1,450

1,610

1,480

1,230 

1,050

1,010

1,150

1,490

1,850 

1,720

1,450

*1,320

1,270

1,300

1,220

1,060

952

880

34,393

1,146

14.4

16.07

68,220

May

830

812

785

785

830

900

952

1,130

1,270

1,250

996

830

749

731

840

1,070 

1,280

1,480

1,570

1,370

1,120 

1,040

1,120

1,050

952

963

880

794

840

1,020

*1,130

31,369

1,012

12.7,

14.66

62,220

June

930

812

870

890

731

777

1,310

1,910

2,680

1,590

1,150

952

860

996

1,020

850 

785

749

830

749

659 

634

618

570

535

535

586

602

570

514

27,264

909

11.4

12.74

54,080

July

493

507

507

493

754

650

535

528

570

586

563

535

528

493

437

418 

424

424

430

430

406 

376

*346

334

322

300

285

265

255

250 

245

13,689

442

5.55

6.40

27,150

Aug.

240

265

565

235

220

215

210

210

210

206

201

196

192

192

188

183 

174

170

165

165

165 

161

161

157

157

149

145

145

141

133 

137

5,749

185

2.32

2.69

11,400

Sept.

129

129

125

125

*122

118

118

114

118

157

*225

192

153

137

133

125 

122

118

114

125

129

118

114

137

486

535

364

295

487

549

5,913

197

2.47

2.76

11,730

Calendar year 1955: Max 14,900 Min 112 Mean 786 Cfsm 9.87 In. 134.13 Ac-ft 569,300

Water year 1955-56: Max 14,900 Min 114 Mean 957 Cfsm 12.0 In. 163.67 Ac-ft 694,700

Peak discharge (base, 6,000 efs).--Nov. 3 (10:30 a.m.) 17,900 cfa (8.76 ft). 

* Discharge measurement made on this day.
48 SKOKOMISH RIVER BASIN

Vance Creek near Potlatch, Wash.

Location. Lat 47°19'45", long 123°18'48", in NE^NE^ sec. 9, T. 21 N., R. 5 W., 1 mile 

downstream from Aristine Creek and 8^ miles southwest of Potlatch.

Drainage area.--15.6 sq mi.

Records available.--March 1955 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 200 ft (from topographic map).

Extremes.--Maximum discharge during year, 1,500 cfs Nov. 4 (gage height, 7.00 ft); minimum, 12 cfs Sept. 4-9, 17-20, 21-23; minimum gage height recorded, 2.94 ft Oct. 3.

1955-56: Maximum discharge, that of Nov. 4, 1955; minimum, that of Sept. 4-9, 

17-20, 21-23, 1956; minimum gage height, 2.86 ft Sept. 12, 13, 1955.

High water of Nov. 18, 1954, reached a stage of 8.1 ft, from floodmarks (discharge, 

3,840 cfs), by slope-area determination.

Remarks. Records fair except those for periods of doubtful or no gage-height record, 

which are poor. Ho regulation or diversion above station.

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

In cubic feet per second) 

(Shifting-control method used Mar. 16-19, Apr. 25 to May 17)

Oct. 1 to Nov. 3 Nov. 3 to Sept. 30

2.9 

3.2 

3.6

16.5

41

116

4.0 

4.8 

5.6

275

700

1,260

3.0 

3.3 

3.6 

4.0

10.5

23

41

80

5.0 295

6.0 745

7.0 1,500

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 total

Mean

Cfsm

In.

Ac-ft

Oct.

20

20

20

52

41

34

40

90

250

200

150

200

150

120

100

95

90

80

80

80

75

70

70

200

*1,000

1,100

1,000

900

1,000

1.200

1,000

9,527

307

19.7

22.71

18,900

Nov.

800

1,OOO

1,200

*1.350

982

728

718

701

696

679

635

575

437

354

283

243

216

247

385

454

413

373

373

732

*898

769

560

494

373

312

17,980

599

38.4

42.86

35,660

Dec.

289

243

167

130

100

140

180

210

240

200

350

445

262

201

150

116

94

78

75

161

283

405

295

189

146

144

102

74

60

54

52.

5,635

182

11.7

13.43

11,180

Jan.

50

48

FT

74

100

229

140

98

76

62

67

76

74

62

95

364

300

250

270

300

270

250

240

230

210

*200

170

150

130

110

100

4,846

156

10.0

11.55

9,610

Feb.

90

80

75

70

70

75

80

*70

63

64

83

90

85

76

70

67

65

63

62

62

61

58

56

57

57

55

54

99

115

2,072

71.4

4.58

4.94

4,110

Mar.

300

350

40O

450

350

250

300

350

200

150

120

90

80

70

66

*66

67

79

116

150

200

300

500

700

600

5OO

450

400

450

500

600

9,204

297

19.0

21.94

18,260

Apr.

550

500

450

420

400

450

500

450

420

400

380

360

340

320

300

290

280

260

250

240

230

220

210

*200

180

169

150

133

115

105

9,272

309

19.8

22.10

18,390

May

99

93

89

86

86

84

81

81

79

75

67

62

58

54

53

52

52

51

48

46

42

40

37

35

33

32

31

29

27

25

*25

1,752

56.5

3.62

4.18

3,480

June

24

23

26

24

24

48

68

156

248

136

90

72

64

64

62

58

54

51

49

44

41

40

39

38

36

34

33

32

31

30

1,739

58.0

3.72

4.15

3,450

July

29

27

27

27

11.

36

33

31

29

28

27

26

26

25

24

24

23

23

22

22

22

21

20

*20

19.5

19

18.5

18

18.5

18

17.5

764.0

24.6

1.58

1.82

1,520

Aug.

18

23

20

19

18

17.5

17

17

17

16.5

16

16

15.5

15

15

15

15

14.5

14

14

14

14

14

13.5

13.5

13.5

13.5

13.5

13.5

13

13

482.0

15.5

0.994

1.15

956

Sept.

13

12.5

12.5

12

12

12

12

12

12.5

*16

17

15

13.5

13.5

13

12.5

12

12

12

14.5

12.5

12

12

22

75

74

53

47

82

81

732.0

24.4

1.56

1.75

1,450

Calendar year 1955: Max - Min - Mean - Cfsm - In. - Ac-ft -

Water year 1955-56: Max 1,35O Mln 12 Mean 175 Cfsm 11.2 In. 152.58 Ac-ft 127, OOO

Peak discharge (base, 5OO cfs). About Oct. 26 (time and discharge unknown); about Oct. 30 (time 

and discharge unknown); Nov. 4 (3-.3O p.m.) 1.5OO cfs (7.00 ft); Dec. 11 (11 p.m.) 652 cfs (5.83 ft); 

about Mar. 24 (time and discharge unknown); about Apr. 7 (time and discharge unknown).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 8-25, Jan. 17 to Feb. 8, Mar. 1-15, Mar. 2O to Apr. 24; doubtful gage-height record Oct. 26 to Nov. 3, Dec. 4-11; discharge estimated on basis of records for 

stations on nearby streams.
SKOKOMISH RIVER BASIN 49

Skokomish River near Potlatch, Wash.

Location. Lat 47°19 I 00", long 123°11'05", in NW&JW^ sec. 15, T. 21 N., R. 4 W., on left 

bank half a mile upstream from U. S. Highway 101, 2.8 miles downstream from confluence 

of North and South Forks, 4.7 miles southwest of Potlatch, and 5.5 miles upstream from 

mouth. Prior to Mar. 24, 1956, at site 200 ft upstream.

Drainage area. 230 sq mi.

Records available.--July 1943 to September 1956.

Gage. Water-stage recorder. Datum of gage is 19.35 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. May 22 to July 23, 1947, staff gage and 

Oct. 1, 1947, to Mar. -24, 1956, water-stage recorders, at various sites about 200 ft 

upstream. All gages have been maintained at present datum except during period 

Oct. 1, 1947, to Apr. 18, 1951, when datum was 2.87 ft lower.

Extremes. Maximum discharge during year, 22,100 cfs Nov. 3 (gage height, 12.6 ft); minimum, 196 cfs Oct. 1-4; minimum gage height, 0.15 ft Sept. 23.

1943-56: Maximum discharge, that of Nov. 3, 1955; minimum, 125 cfs Sept. 14-17, 

1944 (gage height, -0.01 ft).

Remarks. Records good except those for periods of shifting control, which are fair. 

Tow partly regulated by Lake Cushman and Cushman Reservoir No. 2. In normal years

practically entire flow of North Fork is diverted at dam No. 2 and returned 

through Cushman powerplant No. 2.

Revisions.--WSP 1216: Drainage area.

Discharge, In cubic feet per second, water year October 1955 to September 19!

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.

196

T5S

196 

257

370

309

309

1,600

2,900 

2,360

1,590

1,620

1,300

1,020

841

72 B

656

588 

544 

509

475

455

448

920

5.250

*3,100

2,280

2,400

3,220

2,760

1,910

41,287

1,332

81,890

Nov.

1,500

3,370

20.800 

*17,000

6,450

4,940

3,540

2,810

2,470 

2,340

2,100

1,270

1,080

972

900

876

1,050" 844

1,480 

1,640

1,420

1,230

1,310

3,560

5,550

4,100

3,400

3,160

*2,720

2,460

106,342

3,611

214,900

Dec.

2,420

2,020

1,690 

1,450

1,360

1,690

1,970

2,010

1,840 

1,820

4,390

4,330

2,630

1,980

1,670

1,420

1,360

T7530" 1.200 

3,120

4,880

5.410

3,700

2,900

2,930

2,930

2,270

1,830

1,560

1,350

1,210

72,570

2,341

143,900

Jan.

1,180

1,300

1,580 

2,390

3,020

3,560

2,480

1,900

1,670 

1,460

1,980

2,200

2,280

2,070

3,820

a7.400

at, 000

34,000 

a3,500 

a3,000

a2,700

32,600

»2,590

2,280

1,940

1,710

1,530

1,370

1,250

1,160

1.070

74,990

2,419

148,700

Feb.

998

948

884 

852

828

780 "764

748

726 

705

796

820

828

788

719

670

670

£70" 656 

705

705

691

»656

670

726

698

691

1,050

1.190

22,632

780

44,890

Mar.

1,920

2,550

2,820 

2,120

1,640

1,320

1,260

1,160

1,040 

948

900

836

796

748

733

726

73T

804 

972 

1,160

2,000

3,810

6,260

4)200

3,130

2,760

2,250

2,140

2,700

3,220

3,040

60,696

1,958

120,400

Apr.

2,410

2,030

1,770 

1,650

1,570

1,470

1,390

1,340

1,270 

1,360

1,660

1,860

2,080

2,280

2,150

1,900

1,660

1,560 

1,680 

*2,020

2,390

2,320

2,010

1,800

1,710

1,710

1,660

1,500

1,380

1,280

52,870

1,762

104,900

May

1,220

1,190

1,160 

1,160

1,200

1,250

1,330

1,460

1,600 

1,600

1,390

1,200

1,090

1,050

1,110

1,340

1,550

1,710 

1,820 

1,670

1,420

1,300

1,350

1,310

1,200

1,200

1,140

1.020

»1,640

1,170

1,320

40,570

1,309

80,470

June

1,170

1,020

1,070

1,110

940

948

1,590

2,070

5.200 

2,280

1,780

1,420

1,280

1,350

1,380

1,210

1,120

1,070 

1,130 

1,060

948

900

868

820

756

748

796

828

804

726

36,592

1,213

72,180

July

677

677

684 

656

900

756~ 932

712

748 

756

748

684

677

635

551

523

502

516 

523 

»516

481

442

406

394

376

358

335

305

275

265

255

17,265

557

34,240

Ai

6

13

Calendar year 1955: Max 20,800 Mln 159 Mean 1,223 Ac-ft 885,200

Water year 1955-56: Max 20,800 Mln 196 Mean 1,487 Ac-ft 1,080,000

Peak discharge (base, 8,400 cfs). Nov. 3 (10 p.m.) 22,100 cfs (12.6 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range In stage and r

nearby stations.

Note. Shifting-control method used Oct. 26 to Nov. 1, Nov. 6 to Jan. 24, June 9 to Se

>6

g.

250

285

315 

535

240

232

232

224

224 

224

224

220

224

224

228

224

220

216 

216 

212

208

204

208

208

208

204

204

200

m

204

204

,955

224

,800

Sept.

20"8" 200

204 

208

204

*212

220

220

224 

245

300

285

260

250

240

228

220

220 

216 

220

220

216

208

220

555

916

656

488

665

1.070

9,798

327

19,430

scords for

?t. 30.

to sea
50 SKOKOMISH RIVER BASIN

Purdy Creek near Union, Wash.

Location. La t 47C 18'05", long 123°10i50", in NW^NWi sec. 22, T. 21 N., R. 4 W. , on left 

bank Immediately downstream from county road bridge, 1 mile upstream from Weaver Creek 

and 65- miles southwest of Union.

Drainage area. 1.43 sq mi.

Records available .--September 1954 to September 1956.

Gage . Water-stage recorder. Datum of gage is 28.76 ft above mean sea level (State 

Fisheries Department reference mark).

Extremes . --Maximum discharge during year, 81 cfs Dec. 22; maximum gage height, 1.83 ft 

Nov. 2; minimum daily, 13.5 cfs Oct. 20-23, Nov. 17; minimum gage height, 1.19 ft 

July 25-30.

1954-56: Maximum discharge, that of Dec. 22, 1955; maximum gage height, that of 

Nov. 2, 1955; minimum discharge, 10.5 cfs Nov. 4, 7, 1954; minimum gage height, 1.10 ft 

Sept. 13, 14, 1954.

Remarks . - -Records good except those for periods of shifting control or no gage-height 

record, which are fair. Flow affected by springs. No regulation.

Rating tables, water year 1955-56, except periods of shifting control (gage 

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

Oct. 1 to Nov. 5 Nov. 5 to Sept. 19

1.3

1.4

1.5 

1.8

10.5

15.5

25

64

1.16

1.4

1.7

13.5

38

Sept. 19-30

13

22

1.4

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.

14

14

14

15.5

14.5

14.5

15.5

21

19.5

16.5

16.5

15.5

14.5

14

14

14

14

14

14

15.5

13.5

13.5

13.5

*ZZ

30

21

22

19.5

30

21

17

526.0

17.0

1,040

Nov.

16.5

41

34

45

54

47

36

30

26

24

22

19.5

18.5

16.5

15.5

14.5

22 13.5

22

17.5

15.5

16.5

22

32

37

50

49

*43

37

38

875.0

29.2

1,740

Dec.

36

33

31

29

31

34

31

35

33

36

5O

50

49

46

42

38

37

36

37

48

56

71

62

58

49

44

41

36

36

34

33

1,282

41.4

2,540

Jan.

35

36

42

47

55

62

58

53

49

44

44

42

42

44

54

56

56

58

59

*55

55

55

56

55

53

52

48

47

46

44

43

1,545

49.8

3,060

Feb.

42

41

41

41

41

38

37

37

36

36

37

36

35

35

34

34

34

34

35

35

35

35

35

*36

35

33

34

36

36

1,O54

36.3

2,090

Mar.

42

41

43

46

44

42

48

44

43

42

42

41

4O

38

37

37

37

37

36

37

41

43

53

5O

56

52

48

49

50

52

48

1,359

43.8

2,7OO

Apr.

46

46

44

44

42

42

42

41

38

38

4O

38

37

37

37

37

36

36

35

a35

a34

a33

*33

33

33

32

32

32

32

31

1,116

37.2

2,210

May

31

31

30

32

31

30

30

29

29

28

26

26

26

26

26

26

26

26

24

24

24

24

24

24

24

24

24

24

*24

24

22

819

26.4

1,620

June

22

22

26

24

24

26

24

26

24

24

22

22

22

22

22

22

22

22

22

20

2O

20

20

2O

19.5

2O

2O

20

19.5

19.5

658.5

22.0

1,310

July

19.5

19.5

19.5

2O

22

19.5

19.5

19.5

19.5

19.5

19.5

19.5

19.5

19.5

19.5

19.5

18.5

19.5

19.5

18.5

18. 5

18.5

*18.5

17. 5

17. 5

16. 5

T675

16.5

16.5

16.5

17.5

581.5

18.8

1.15O

Aug.

17.5

22

18.5

17.5

17.5

17.5

17.5

17.5

17.5

17.5

17.5

17.5

17.5

18.5

19.5

18.5

18.5

18.5

18.5

18.5

18.5

18.5

18.5

18.5

18.5

18.5

18.5

17.5

18.5

18.5

17.5

565. 0

18.2

1,120

Sept.

16.5

16.5

16.5

15.5

14.5

14.5

*14.5

314.5

a!5

a!5

a!5.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

14.5

14.5

14.5

15.5

17

16

15.5

15.5

18

16

465.0

15.5

922

Calendar year 1955: Max 71 Mln 13.5 Mean 25.0 Ac-ft 18,090

Water year 1955-56: Max 71 Mln 13.5 Mean 29.6 Ac-ft 21,500

* Discharge measurement made on this day.

a No gage-height recordj discharge estimated on basis of records for stations on nearby streams.

Note. Shifting-control method used Nov. 5 to Dec. 12, Sept. 12-19.
UNION RIVER BASIN 51

Union River near Bremerton, Wash.

Location.- -La t 47°31'45", long 122°47'05", In SWij-NE^ sec. 34, T. 24 N., R. 1 W., on right 

bank 400 ft upstream from highway bridge, l£ miles upstream from Hazel Creek, and 

7 miles west of Bremerton.

Drainage area. --3. 16 sq ml.

Records available . October 1945 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 395 ft (from topographic map). Prior to 

Jan. 30, 1952, at site 100 ft upstream at datum 398.0 ft above mean sea level (closed 

stadia traverse) .

Average discharge. 11 years, 12.8 cfs (9,270 acre-ft per year).

Extremes . Maximum discharge during year, 386 cfs Nov. 3 (gage height, 7.50 ft); minimum, 

0.4 cfs May 20, Jane 2.

1945-56: Maximum discharge , 476 cfs Feb. 22, 1949 (gage height, 3.85 ft, site and 

datum then In use), from rating curve extended above 160 cfs by logarithmic plotting; 

minimum dally, 0.2 cfs June 2, 1955.

Remarks . Records poor October to March and fair thereafter. Regulation by dam 1 mile 

upstream. No diversion above station.

Revisions (water years) . WSP 1216: Drainage area. WSP 1286: 1948 (M), 1949-50.

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

In cubic feet per second) 

(Shifting-control method used Nov. 25 to Dec. 21)

Oct. 1 to Nov. 2 Nov. 3 to Sept. 30

2.5

2.6 

2.8 

3.1 

3.7

1.4

3.4

11

30

107

3.8

3.9 

4.1 

4.5

0.4

.8

2.8

5.0 

5.5 

6.0 

7.1

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 total

Mean

Cfsm

In.

Ac-ft

Oct.

2.8

2T1

2.8

4.5

4.0

3.5

4.5

12

13

10

9.0

8.0

7.0

6.5

6.0

5.8

5.4

 5.1

5.0

5.0

4.9

4.8

4.7

10

30

20

15

20

25

20

16

293.1

9.45

2.99

3.45

581

Nov.

14

100

*279

200

50

35

25

21

19

16

14

12

11

10

9_

9

9

15

28

27

20

18

40

80

 114

69

56

46

36

30

1,412

47.1

14.9

16.62

2,800

Dec.

24

 23

20

18

17.5

24

32

30

24

22

32

31

24

18.5

16.5

14.5

13

12.5

14.5

68

~rS 160

61

57

53

50

47

41

38

34

32

1,125.0

36.3

11.5

13.24

2,230

Jan.

32

38

 53

106

100

86

60

55

50

45

45

45

45

45

60

80

66

55

50

45

45

50

45

50

45

40

35

30

27

25

23

1,576

50.8

16.1

18.55

3,130

Feb.

20

19

17

16

15

14

13

11

10

9.5

9.0

9.0

9.0

8.5

S75

8.5

8.5

9.0

9.5

10

10.5

11

11.5

 11.5

14

16

30

38

3T

408.5

14.1

4.46

4.81

810

Mar.

32

32

36

38

30

26

26

24

22

21

19.5

19.5

18.5

18

IS

18.5

20

24

27

30

40

49

97

4T

35

29

24

22

22

0^26

912.0

29.4

9.30

10.73

1,810

Apr.

23

2S

19

*17.5

15.5

14

13.5

12

11

10

9.2

8.0

7.2

6.8

6.5

5.6

5.3

5.0

4.8

4.6

4.2

4.2

4.0

3.8

3.6

3.6

3.4

3.0

372

3.0

254.5

8.48

2.68

3.00

505

May

3.0

77*

2.6

2.6

2.4

2.2

2.2

2.0

1.9

1.9

2.0

2.0

1.8

1.6

1.5

1.4

 1.4

1.3

1.2

1.1

1.4

1.3

1.4

1.3

1.4

1.4

1.4

1.2

1.1

1.1

1.1

52.8

1.70

0.538

0.62

105

June

1.1

1.0 T7i

1.8

1.3

2.2

2.6

4.4

5.3

6.2

5.0

4.4

4.2

3.8

4.0

4.2

5.0

*4.6

4.4

4.0

3.8

3.4

3.4

3.2

3.2

3.0

3.0

3.0

2.8

E , 6

103.1

3.44

1.09

1.21

204

July

2.6

2.4

2.4

2.6

5.4

2.8

2.3

2.2

2.0

2.0

1.

1.

1.

1.

1.

1.

1.

1.

»1.

1.

1.

1.

1.

1.

1.4

1.3

1.3

1.3

1.2

1.1

TT?

55.6

1.79

0.566

0.65

110

Aug.

1.1

3.2

.4

.4

.2

» .3

.3

.2

.3

.3

.2

.2

.

'7.'

38.3

1.24

0.392

0.45

76

Sept.

0.9

.9

.8

.8

.!_

.7

.8

.8

.9

1.0

1.3

 1.0

.8

.8

.8

.8

.8

.8

.8

.9

.8

.8

.8

.8

1.3

1.4

1.1

1.4

1.8

T74

28.7

0.96

0.304

0.34

57

Calendar year 1955: Max 279 Mln 0.2 Mean 13.2 . Cfsm 4.18 In. 56.61 Ac-ft 9,540

Water year 1955-56: Max 279 Mln 0.7 Mean 17.1 Cfsm 5.41 In. 73.67 Ac-ft 12,420

Peak discharge (base, 120 cfs). Nov. 3 (3 p.m.] 386 cfs (7.50 ft); probably Nov. 24 (time and

discharge unknown); Dec. 21 (11 p.m.) 186 cfs (5.53 ft); probably Jan. 4 (time and discharge unknown) .

Discharge measurement made on this day. 

Note.--No gage-height record Oct. 4-17, Oct. 19 to Nov. 2, Nov. 4-24, Jan. 4 to Mar. 23; discharge 

estimated on basis of records for nearby stations.
52 UNION RIVER BASIN 

Union River near Belfair, Wash.

Location. La t 47°28'20", long 122°49 1 40", in NE£ sec. 20, T. 23 N., R. 1 W., on left 

bank at highway bridge 1? miles north of Belfair and 2 miles upstream from mouth.

Drainage area. 19.2 sq mi.

Records available.--July 1947 to September 1956.

Gage. Water-stage recorder. Datum of gage is 45.6 ft above mean sea level (closed 

stadia traverse).

Average discharge. 9 years, 57.8 cfs (41,850 acre-ft per year).

Extremes. Maximum discharge during year, 1,040 cfs Nov. 3 (gage height, 6.25 ft); minimum, 18.5 cfs Oct. 1, 2; minimum gage height, 1.61 ft Sept. 5, 6.

1947-56: Maximum discharge, 1,610 cfs Feb. 22, 1949 (gage height, 7.81 ft), from 

rating curve extended above 700 cfs; minimum, 13 cfs Sept. 29, 1947, Sept. 11, 1953; 

minimum gage height, 1.06 ft Sept. 5, 6, 1949.

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

City of Bremerton diverts annually about 3,100 acre-ft from a point about 5 miles 

above station for municipal use. The diversion varies from almost no flow in August 

and September to as much as 10 cfs during winter months. No regulation.

Revisions.--WSP 1216: Drainage area.

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

In cubic feet per second)

Oct. 1 to Dec. 20 Dec. 21 to Sept. 30

1.7 14.5

1.8 20

2.0 36

2.4 89

3.0 

4.0 

6.0

203

418

960

1.6 

2.0 

2.5

18.5

56

126

3.0 

4.3

214

487

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

T9~ 19

19

24

22

21

28

62

69

53

44

43

36

33

31

28

28

27

*26

25

25

24

24

48

157

124

96

86

122

110

84

1,557

50.2

3,090

Nov.

65

184

903

33?

211

132

89

67

55

48

42

36

33

30

213

28

28

50

94

91

72

62

108

255

303

193

163

132

111

115

4,360

145

8,650

Dec.

106

 91

76

65

59

107

135

159

143

117

165

167

122

94

79

67

58

48fa

285

155" 465

258

210

173

148

131

106

100

91

76

4,371

141

8,670

Jan.

76

114

203

373

357

299

209

148

134

123

 123

112

124

120

185

275

196

157

165

157

136

140

134

150

120

102

91

84

80

76

73

4,846

156

9,610

Feb.

70

68

66

64

62

60

58

56

55

54

54

53

ST

53

54

54

55-

56

60

75

80

80

80

85

90

100

120

 150

162

2,127

73.3

4,220

Mar.

141

126

167

165

123

97

123

112

96

85

84

87

77

74

7T

80

77

87

96

108

174

220

400

198

152

118

115

120

153

146

4,150

134

8,230

Apr.

113

ICC

89

 80

74

71

73

68

66

63

61

58

57

55

54

53

52

50

49

48

48

47

47

47

46

46

45

44

43

47

1,790

59.7

3,550

May

43

4?

42

43

43

42

41

40

40

41

40

40

39

38

*37

37

36

35

35

35

34

ST

34

34

34

39

39

36

34

34

34

1,175

37.9

2,330

June

33

33

43

43

37

41

48

56

58

BT

47

39

37

37

37

36

38

35

36

34

33

32

31

31

30

30

30

*30

30

29

1,130

37.7

2,240

July

29

28

28

28

3_i

30

29

28

28

28

28

27

26

27

26

25

24

24

24

24

24

24

24

24

24

24

24

23

53

24

24

805

26.0

1,600

Aug.

24

32

2Q

25

24

24

 24

23

23

24

24

23

23

23

24

23

22

21

5T

21

21

21

21

21

21

21

21

21

21

21

21

707

22.8

1,400

Sept.

21

21

21

21

20

20

20

20

21

21

24

 21

21

21

21

21

21

21

21

21

21

21

21

21

23

24

22

24

28~ 28

652

21.7

1,290

Calendar year 1955: Max 903 Mln 16.5 Mean 56.0 Ac-ft 40,540

Water year 1955-56: Max 903 Mln 19 Mean 75.6 Ac-ft 54,880

450 

Mar

Peak discharge (base, 400 ef a) .-- Nov. 3 (12:30 p.m.) 1, 

0 cfs (4.14 ft); Dec. 21 (9:30 p.m.) 584 cfs (4.69 ft); 

r. 23 (3 to 4 p.m.) 526 cfs (4.40 ft).

040 cfs (6.25 ft)j Nov. 24 (9:30 p.m.) 

Jan. 4 (6 p.m.) 438 cfs (4.14 ft);

Discharge measurement made on this day. 

Note. No gage-height record Jan. 31 to Feb. 28; discharge estimated on basis of recorded range 

In stage and records for nearby stations.
TAHUYA RIVER BASIN 53

Gold Creek near Bremerton, Wash.

Location. Lat 47°33'20", long 122 "48 "35", in NEfcSWi sec. 21, T. 24 N., R. 1 W., on right 

bank l£ miles upstream from mouth and 8 miles west of Bremerton.

Drainage area. 1.54 sq mi.

Records available .--October 1945 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 750.9 ft above mean sea level (closed 

stadia traverse).

Average discharge. 11 years, 6.18 cfs (4,470 acre-ft per year).

Extremes.--Maximum discharge during year. 175 cfs Nov. 3 (gage height, 2.97 ft); minimum, 

0.4 cfs Aug. 25 (gage height, 0.80 ft).

1945-56: Maximum discharge, 203 cfs Feb. 22, 1949 (gage height, 3.27 ft); minimum, 

0.2 cfs Aug. 14, 1950; minimum gage height, 0.75 ft Oct. 2, 1945, Aug. 14, 1950.

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

No regulation or diversion above station.

Revisions (water years ). WSP 1216: Drainage area. WSP 1286: 1947-49(M), 1950(P).

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

Ln cubic feet per second)

Oct. 1 to Nov. 2 Nov. 3 to Sept. 30

0.8 

1.0 

1.2

0.5 

2.1 

6.5

1.5 

1.9

17.0

38

0.8

1.0 

1.2 

1.5

0.4

1.9

5.3

15.5

1.9 

2.4 

2.9

38

87

162

Discharge, 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

13

14

15

16

17

18

19

20

21

22

23

Z4

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

0.7

.6

.8

1.0

.9

.9

2.0

5.8

6.2

4.3

4.1

5.0

3.8

3.2

3.0

2.5

2.4

*2.1

2.0

1.8

1.8

1.6

1.6

4.3

18

15.5

12

10

13.5

13

10.5

154.9

5.00

3.25

3.74

307

Nov.

7.6

33

155

74

25

16.5

*11.5

9.6

7.9

7.3

7.1

6.7

6.4

6.0

5.8

6.2

7.0

15

23

17

11

9.5

40

60

30

21

*18

16

14

13

680.1

22.7

14.7

16.42

1,350

Dec.

12.5

11.5

10.5

9.3

9.6

12

13.5

19

20

16.5

19

19.5

15.5

12.5

10.5

9.6

10.5

8.6

9.9

37

56

46

28

26

26

19.5

16.5

13.5

12

10.5

9.9

550.9

17.8

11.6

13.30

1,090

Jan.

9.6

11.5

24

51

45

35

25

18.5

15.5

*14

13.5

14

14

13.5

20

35

24

19

18

17

16.5

16.5

17

16

13.5

11.5

10.5

9.6

8.9

8.0

7^5

572.6

18.5

12.0

13.83

1,140

Feb.

6.8

6.5

6.2

6.1

6.2

6.3

6.5

6.0

5.4

5.0

4.9

4.7

4.7

5.0

4.6

4.5

4.5

4.8

5.6

9.0

15

TT

8.6

9.2

10

9.0

8.0

12

10

------

206.1

7.11

4.62

4.98

409

Mar.

14

13

17

22

17

15

20

17

15

13

11

10

9.4

9.0

8.4

7.9

8.9

11

14.5

18.5

34

»42

70

39

26

22

17

15

15.5

20

21

593.1

19.1

12.4

14.32

1,180

Apr.

18

14.5

12

10.5

9.3

»8.6

8.2

7.3

6.8

6.5

6.0

5.8

5.5

5.1

4.8

4.8

4.8

4.6

4.4

4.4

4.2

4.2

3.8

3.8

3.8

3.8

3.6

3.5

3.5

5.5

189.4

6.51

4.10

4.57

576

May

3.1

3.1

3.0

3.0

3.1

3.0

2.9

2.7

2.6

5.2

2.9

2.7

2.7

2.6

2.5

*2.5

2.4

2.3

2.1

2.4

2.3

2.1

2.0

1.9

1.9

2.0

2.0

1.9

1.9

1.8

u

76.3

2.46

1.60

i.84

151

June

1.6

1.7

2.3

2.7

2.0

2.5

3.3

4.2

4,4.

4.2

3.6

3.5

3.1

3.1

3.0

3.0

3.1

2.8

3.1

2.8

2.7

2.5

2.4

2.4

2.4

2.3

2.1

*2.0

1.9

1.9

82.6

2.75

1.79

1.99

164

July

1.9

1.8

1.8

1.7

2.5

1.9

1.7

1.8

1.7

1.6

1.6

1.5

1.6

1.4

1.3

1.4

1.3

1.3

.5

.2

.0

.0

.2

.2

1.1

.9

.6

78

.7

.8

* 3

42.2

1.36

0.883

1.02

84

Aug.

0.8

1.4

1.3

1.1

1.1

1.0

1.0

1.0

.9

.8

.8

.9

»1.0

.9

.8

.8

.8

.9

.9

.9

.9

.8

.8

.6

.5

.5

.6

.6

.7

.6

.7

26.4

0.85

0.552

0.64

52

Sept.

0.7

.7

.8

.7

.6

.5

76

.6

.6

.7

1.0

.8

*.7

.8

.8

.8

.8

.8

.8

.8

.6

.6

.7

.8

1.0

1.1

1.0

1.1

1.6

1.5

24.6

0.82

0.532

0.59

49

Calendar year 1955: Max 155 Mln 0.5 Mean 6.84 Cfsm 4.44 In. 60.23 Ac-ft 4,950

Water year 1955-56: Max 155 Mln 0.5 Mean 8.74 Cfsm 5.68 In. 77.24 Ac-ft 6,350

Peak discharge (base. 100 cfs). Nov. 3 (8:30 p.m.) 175 cfs (2.97 ft). 

* Discharge measurement made on this day.

Note. No gage-height record Nov. 12-26, Jan. 30 to Mar. 15, May 7-15; discharge estimated on 

basis of recorded range In stage and records for stations on nearby streams.
54 TAHUYA RIVER BASIN

Tahuya River near Bremerton, Wash.

Location. Lat 47°33'00", long 122"50'50", in SE£ sec. 19, T. 24 N., R. 1 W., on right 

bank 100 ft downstream from bridge, ij miles downstream from Tahuya Lake, and 10 miles 

west of Bremerton.

Drainage area. 6.16 sq mi.

Records available.--May 1945 to October 1956 (discontinued). Published as Tahuyeh Creek 

near Bremerton, 1945 and as Tahuya Creek near Bremerton, 1946.

Gage. Water-stage recorder. Altitude of gage is 540 ft (from topographic map). Prior to 

Sept. 16, 1954, at site a quarter of a mile upstream at datum 539 ft above mean sea 

level (closed stadia traverse).

Average discharge. 11 years, 22.3 cfs (16,140 acre-ft per year).

Extremes.--Maximum discharge during year, 504 cfs Nov. 3 (gage height, 5.93 ft); minimum, 

0.6 cfs Sept. 8, 9 (gage height, 1.44 ft).

1945-56: Maximum discharge, that of Nov. 3, 1955; minimum, 0.1 cfs Sept. 22-26, 

1947, Sept. 1-10, 12, 13, 1949, Oct. 4-10, 1952.

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

Small diversions for domestic use.

Rating tables, Oct. 1, 1955, to Oct. 8, 1956 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Nov. 7-23)

Oct. 1 to Nov. Z, 1955

1.3 

1.5 

2.0

3, 1955, Oct. 8, 1956

1.5 

4.0 

19.5

2.7 

3.5

1.4 

1.6 

2.0

0.5

3.5

15

3.0 

4.0 

6.0

75

180

528

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

Day

1

2

3

4

5

6

7

8

9

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.

1.6

T7^

1.6

1.6

1.6

1.6

1.6

3.5

6.0

8.0

6.0

9.0

7.5

6.5

6.0

5.5

5.2

*4.9

4.7

4.4

4.4

4.4

6.6

15

51

54

46

40

52

51

39

451.8

14.6

2.37

2.73

896

Nov.

30

116

448

323

150

90

*66

48

39

34

30

26

24

22

20

20

25

30

45

54

51

46

56

128

181

120

*95

77

65

60

2,519

84.0

13.6

15.21

5,000

Dec.

56

49

43

38

38

49

56

73

83

73

85

*85

70

50

48

41

39

35

42

122

232

215

141

121

115

95

79

62

50

43

36

2,364

76.3

12.4

14.27

4,690

Jan.

36

46

82

172

189

162

121

87

72

*59

56

56

57

56

81

131

106

87

79

73

68

69

69

67

56

52

41

36

32

28

25.

2,351

75.8

12.3

14.19

4,660

Feb.

23

21

19

18.5

19

18

17.5

16

15

14.5

14.5

14

13

12.5

11.5

11.5

11.5

11.5

13

19.5

23

23

22

23

24

24

*28

77

93

651.0

22.4

3.64

3.93

1,290

Mar.

79

76

90

83

64

50

48

41

38

30

27

24

24

23

23

24

26

33

44

58

104

148

232

167

110

82

63

54

56

72

77

2,070

66.8

10.8

12.50

4,110

Apr.

65

54

45

38

33

*29

28

24

22

21

19

17

16

14.5

14

13

12.5

11.5

11

10.5

10.5

9.5

9.2

8.6

8.3

7.7

7.5

7.2

6.9

6_J:

580.1

19.3

3.13

3.50

1,150

May

6.4

5.9

5.9

5.7

5.9

5.7

5.5

5.2

4.8

7.3

6.2

5.7

5.0

4.8

4.6

*8.2

12

7.2

5.7

4.6

4.8

4.3

3.9

3.7

3.5

4.1

3.5

3.5

2.7

2.5

2.3

161.1

5.20

0.844

0.97

320

June

2.1

2.1

3.5

3.9

3.1

4.3

6.2

9.2

11.5

TTTs

9.5

8.0

6.9

5.7

7.5

9.2

7.5

6.2

6.9

6.4

5.2

4.8

4.8

4.3

4.1

3.7

3.9

3.9

3.7

3.3

172.9

5.76

0.935

1.04

343

July

2.9

*2.9

2.9

2.7

3.9

i±±

3.3

2.9

2.7

2.5

2.3

2.1

3.1

2.5

2.3

2.3

2.1

1.9

1.8

1.6

1.4

1.4

1.4

1.4

1.3

1.3

1.2

1.0

1.0

.9

79

66.0

2.13

0.346

0.40

131

Aug.

0.9

1.8

1.8

1.6

1.3

1.2

1.2

1.2

1.1

1.1

1.1

1.1

 1.0

1.0

1.1

1.1

1.0

1.0

1.0

1.0

.9

.9

.9

.9

.9

.9

.8

.8

.7

.7

.7

32.7

1.05

0.170

0.20

65

Calendar year 1955: Max 448 Min 1.4 Mean 23.8 Cfsm 3.86 In. 52.51 Ac-ft 17

Sept.

0.8

.7

77

.7

.7

.7

.7

.7

.7

.8

.9

.8

*.8

.7

.7

.8

.8

.8

.8

.9

.8

.7

.7

.8

.9

1.0

.9

.9

1.3

T73

24.5

0.82

0.133

0.15

49

260

Water year 1955-56: Max 448 Min 0.7 Mean 31.3 Cfsm 5.08 In. 69. 09 Ac-ft 22,700

Jan.

Peak discharge (base, 150 efs). Nov. 3 (6 to 7 p.m. 214

cfs (4.33 ft); Dec. 21 (9 to 1O p.m.) 251 cfs (4.50 ft 

Jan. 16 (10 a.m. to 12 m.) 138 cfs (3.65 ft); Mar. 23

* Discharge measurement made on this day.

Note. No gage-height record Oct. 1-17, Nov. 5, 6, 13-17, Jan. 31 to Feb. 3; discharge estimated 

on basis of recorded range in stage and records for nearby stations.

504 cfs (5.93 ft); Nov. 25 (12:15 a.m.) 

. 4 (6 to 7 p.m.) 201 cfs (4.16 ft); 

3 p.m.) 273 cfs (4.64 ft).

Discharge, in cubic feet per second, 1956

1.1

1.1

1.0

.9

Oct. 5.......... 0.9
TAHUYA RIVER BASIN

Tahuya River near Belfair, Wash.

Location. Lat 47°29'40", long 122°54'20", in SE^SE^ sec. 10, T. 23 N., R. 2 W., on left 

bank 3? miles dovmstream from Panther Creek and 5 miles northwest of Belfair.

Drainage area. 16.1 sq mi.

Records available.--May 1945 to October 1956 (discontinued). Published as Tahuyeh Creek 

near Belfair, 1945 and as Tahuya Creek near Belfair, 1946.

Gage.--Water-stage recorder. Datum of gage is 353 ft above mean sea level (closed stadia 

traverse).

Average discharge.--11 years, 48.4 cfs (35,040 acre-ft per year).

Extremes. Maximum discharge during year, 1,210 cfs Nov. 3 (gage height, 8.43 ft); minimum, 0.1 cfs Oct. 1-7; minimum gage height, 2.12 ft Oct. 1-4.

1945-56: Maximum discharge, that of Nov. 3, 1955; no flow at times most years.

Remarks. Records good except those below 5 cfe and those for period of no gage-height 

record, which are fair. Small diversions for irrigation and domestic use. No regulation.

Revisions . WSP 1246: Drainage area.

Rating tables, Oct. 1, 1955, to Oct. 8, 1956 (gage height, in feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Oct. 1-8, 1955)

Oct. 1 to Nov. 3, 1955 Nov. 4, 1955, to Oct. 8, 1956

2.0

2.1

2.2

2.3

2.4 

2.6

0.1

.5

1.3

2.9

5.8

14.5

3.0 

4.0 

5.0 

6.0 

8.0

42

155

314

520

1,070

2.3

2.4 

2.6

.

1.0 

2.6 

9.5

4.0 

5.0 

7.3

155

314

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

Tbtal

Mean

Cfsm

In.

Ac -ft

Oct.

3^±

.1

.1

.1

.1

.1

.1

.4

8.4

18

13

18.5

13.5

11

9.0

7.3

6.9

5.4

*5.1

4.8

4.5

4.2

3.9

15.5

86

116

97

91

120

~93~ 129 

882.1

28.5

1.77

2.04

1,750

Nov.

72

188

1,010

845

409

239

169

127

105

86

74

62

55

aSl

a47

a47

a45

a5O

111

140

122

108

137

332

459

291

226

183

145

*134

6,069

202

12.5

14.02

12 , 040

Dec.

122

108

92

81

77

99

124

169

186

154

188

*189

145

115

96

82

72

67

73

250

525

511

339

289

287

231

192

149

120

100

88

5,320

172

10.7

12.29

10,550

Jan.

85

105

214

421

455

389

289

206

163

137

126

*126

128

122

193

327

242

198

182

172

149

155

147

154

128

108

93

80

70

61

54

5,479

177

11.0

12.66

10,870

Feb.

48

43

37

35

34

32

31

29

27

26

25

24

23

20

19

18

17

16.5

18.5

27

37

43

43

45

53

55

59

*182

214

1,281.0

44.2

2.75

2.96

2,540

Mar.

172

149

192

202

147

112

114

108

86

72

65

60

55

52

51

53

59

79

102

128

236

339

514

390

256

190

144

127

132

166

182

4,734

153

9.50

10.94

9,390

Apr.

147

TTT

97

81

69

60

56

50

44

*40

34

32

29

27

25

23

22

20

19

18

17

16.5

15

14

13.5

13

12.5

11.5

10.5

10

1,143.5

38.1

2.37

2.64

2,270

Hay

9.5

9.0

8.6

8.2

8.2

8.2

7.7

7.2

6.4

6.4

7.7

7.7

6.8

6.0

5.2

4.9

*7.7

10.5

7.7

5.6

4.6

4.0

3.8

3.5

3.2

3.2

3.5

3.5

3.0

2.6

2.4

186.5

6.02

0.374

0.43

370

June

2.0

1.7

274

3.8

4.0

3.5

7.2

12

20

19.5

17

13

11

10

9.5

10.5

10.5

9.0

9.5

9.5

8.2

6.8

6.0

5.2

*5.2

4.6

4.3

3.8

3.8

3.8

237.3

7.91

0.491

0.55

471

July

3.5

372

2.8

2.6

3.0

3.5

3.5

2.8

2.4

2.2

2.0

1.8

1.7

1.5

1.7

1.7

1.4

1.4

1.3

1.4

1.3

1.1

1.0

1.0

.9

.8

.8

.8

.7

77

.7

55.2

1.78

0.111

0.13

109

Aug.

0.7

1.1

.8

.7

.7

.6

.6

.6

.6

.6

.6

.6

*.6

.5

.6

.5

.5

.4

.4

.4

.4

.3

.4

.4

.4

.4

.4

.4

.4

.4

.3

16.3

0.53

0.033

0.04

32

Sept.

~30.3

.3

.3

.3

.3

.3

.3

.3

.4

.5

*.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.4

.3

.3

.3

.3

.3

.3

.3

.4

10.4

0.35

0.022

0.02

21

Calendar year 1955: Max 1,010 Hin 0.1 Mean 53.8 Cfsm 3.34 In. 45.39 Ac-ft 38,970

Water year 1955-56: Max 1,010 Hin O.I Mean 69.4 Cfsm 4.31 In. 58.72 Ac-ft 50,410

Peak discharge (base. 45O cfs). Nov. 3 (9:30 p.m.) 1,210 cfs (8.43 ft); Nov. 24 (10 p.m.) 595 cfs 

(6.32 ft); Dec. 21 (9 p.m.) 639 cfs (6.50 ft); Jan. 4 (6 p.m.) 494 cfs (5.88 ft); Mar. 23 (2 p.m.) 

616 cfs (6.41 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

stations.

Discharge, in cubic feet per second, 1956

467240 O -58 -5
56 DOGFISH CREEK BASIN

Dogfish Creek near Poulsbo, Wash.

Location. Lat 47°45'10", long 122"38' 30", In SWi sec. 11, T. 26 N., R. 1 E., on left 

bank half a mile upstream from mouth and 1 mile north of Poulsbo.

Drainage area. 6.77 sq ml.

Records available.--July 1947 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 20 ft (from topographic map). Prior 

Eo Nov. 2, 1950, at site 200 ft downstream at datum 1.75 ft lower.

Average discharge.--9 years, 8.94 cfs (6,470 acre-ft per year).

Extremes. Maximum discharge during year, 269 cfs Dec. 20 (gage height, 6.37 ft), from 

rating curve extended above 60 cfs on basis of contracted-opening determination at gage 

height 8.07 ft; minimum, 2.9 cfs July 23; minimum gage height, 1.13 ft Oct. 1, 2.

1947-56: Maximum discharge, 333 cfs Feb. 22, 1949 (gage height, 8.07 ft, present 

datum, from high-water mark on gage house), from rating curve extended above 50 cfs on 

basis of contracted-opening determination of peak flow; minimum, 1.8 cfs Aug. 13, 1947, 

July 30, 1951.

Remarks.--Records good, 

from unknown source.

Small diversions for Irrigation. Slight regulation at times

Revisions (water years). WSP 1122: 1947(M). WSP 1346: 1948-50(P), 1953(M). WSP 1396: 

1950(P).

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

in cubic feet per second)

Oct. 1 to Dec. 20 Dec. 21 to Sept. 30

1.1

1.2 

1.4 

1.8

3.1

4.8

10.5

24

2.4

3.2 

4.1

59

112

165

1.3

1.4

1.5 

1.8

3.1

4.4

6.5

16.0

2.2 

2.6 

3.0 

3.7

34

59

138

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

3.5

375

3.7

3.9

4.1

3.9

7.9

21

11.5

8.3

6.4

5.6

4.8

4.6

4.4

4.1

*4.1

4.1

4.4

4.4

4.4

4.6

4.4

6.6

15

8.6

7.9

7.4

10.5

7.7 

6.9

202.2

6.52

0.963

1.11

401

Nov.

6.1

43

*82

32

14

10

8.6

8.0

7.1

8.0

8.3

6.6

5.8

5.4

4.8

5.6

5.8

14

17.5

13

9.2

8.9

17

56

31

19

17

14

13

*14

504.7

16.8

2.48

2.77

1^000

Dec.

14

11.5

10.5

10

11.5

27

16

29

17

15.5

18

14.5

11

9.2

9.2

9.5

8.3

lii.

14.5

165

135

96

39

56

44

40

32

20

16

14 

12

932.6

30.1

4.45

5.12

1,850

Jan.

19

43

60

111

114

111

47

29

32

24

*25

22

26

22

42

33

20

20

23

18.5

18

18.5

17.5

15.5

13

11.5

10.5

10.5

9.7

9.1 

6.2

983.5

31.7

4.68

5.40

1,950

Feb.

7.3

7.6

8.2

9.1

9.7

10

10.5

9.4

9.1

8.2

8.2

7.9

8.2

7.9

6.8

6.5

7.0

7.9

13

20

22

14.5

11

11

10

9.1

*17.5

37

17

331.6

11.4

1.68

1.82

658

Mar.

12

13.5

22

44

19

13

32

20

15

12

10

9.7

9.7

8.8

8.2

7.6

7.3

6.8

6.8

8.2

23

19

62

24

21

19

16.5

14.5

15.5

26 

16

542.1

17.5

2.58

2.98

1,080

Apr.

13

12

11

11

10.5

*9.7

9.7

9.4

8.8

8.5

8.2

7.9

7.3

7.3

7.3

7.6

7.0

6.8

6.8

6.5

6.2

6.2

6.2

6.2

6.2

6.0

675

6.5

6.8

6.5

239.1

7.97

1.18

1.31

474

May

6.2

6.2

6.2

6.5

6.5

6.2

6.0

5.8

5.5

6.6

6.0

6.0

5.8

5.5

5.3

*5.1

4.7

4.6

4.4

4.6

4.6

4.4

4.6

4.7

4.6

4.9

4.9

4.7

4.6

4.2

4.2

164.3

5.30

0.783

0.90

326

June

4.4

474

10

12.5

8.2

10.5

10.5

11.5

10.5

13

8.8

6.8

6.2

6.0

6.5

6.2

6.0

5.8

7.0

6.2

5.S

5.3

5.3

5.1

4.9

4.9

4.7

4.9

4.9

4.7

211.5

7.05

1.04

1.16

420

July

4.7

*4.6

4.7

4.7

4.9

4.9

4.7

4.4

4.4

4.4

4.2

4.E

4.1

4.2

4.2

4.1

3.9

3.9

3.8

3.7

3.8

3.8

3.5

T7F

3.7

3.7

3.5

3.5

3.8

3.8 

4.1

127.6

4.12

0.609

0.70

253

Aug.

4.1

7.3

57T

4.2

4.2

3.9

4.2

3.9

3.9

3.8

3.7

3^5

*3.8

4.1

4.4

4.6

4.2

4.1

3.8

3.5

3.7

3.7

3.7

3.9

4.1

3.9

4.1

4.9

4.4

4. 2 

3.9

128.8

4.15

0.613

0.71

255

Sept.

4.7

4.2

4.2

4.1

4.1

4.1

4.1

3.9

4.1

4.4

6.5

5.1

*4.6

4.6

4.6

4.7

4.7

4.7

4.9

4.9

4.9

4.7

4.7

4.9

5.1

8.4

£72

5.5

5.5

5.3

146.4

4.88

0.721

0.80

290

Calendar year 1955: Max 165 Min 2.7 Mean 8.90 Cfsm 1.31 In. 17.84 Ac-ft 6,450

Water year 1955-56: Max 165 Min 3.5 Mean 12.3 Cfsm 1.82 In. 24. 78 Ac-ft 8,960

Peak discharge (base, 70 cfs). Nov. 3 (7 a.m.) 102 cfs (3.04 ft); Nov. 24 (5 p.m.) 128 cfs 

(3.53 ft); DecT 20 (6 p.m.) 269 cfs (6.37 ft); Dec. 24 (3 p.m.) 82 cfs (2.86 ft); Dec. 26 (8 p.m.) 

76 cfs (2.77 ft); Jan. 4 (2 p.m.) 153 cfs (3.89 ft); Mar. 4 (3 p.m.) 75 cfs (2.79 ft); Mar. 23 

(8:30 a.m.) 113 cfs (3.30 ft).

* Discharge measurement made on this day.
MINTER CREEK BASIN 57

Huge Creek near Wauna, Wash.

Location.--Lat 47°23'20", long 122°41'50", at north line sec. 20, T. 22 N., R. 1 E., on 

right bank at downstream side of bridge, an eighth of a mile upstream from mouth and 

2? miles west of Wauna.

Drainage area. 5.51 sq mi.

Records available.--July 1947 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 100 ft (from topographic map). Prior 

£0 June 26, 1951, at same site at datum 0.86 ft higher.

Average discharge.--9 years, 12.1 cfs (8,760 acre-ft per year).

Extremes. - -Maximum discharge during year, 206 cfs Dec. 21 (gage height, 2.19 ft)'j minimum, 

 3.8 cfs Sept. 6; minimum gage height, 0.49 ft May 18, 20, 21.

1947-56: Maximum discharge, 391 cfs Feb. 9, 1951 (gage height, 3.64 ft); minimum, 

3.2 cfs Sept. 1, 1950; minimum gage height, that of May 18, 20, 21, 1956.

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

No regulation or diversion above station.

Revisions.--WSP 1216: Drainage area.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Feb. 21 to Apr. 22, May 15-26)

1.0

3.0 

4.9

10.5

20

1.2 

1.4 

1.7 

2.0 162

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

Day

1

2

3

4

5

6

7

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.

4.7

4.9

4.9

5.5

5.1

4.9

5.9

8.1

9.6

6.7

5.3

5.3

4.7

4.3

4T3

4.3

*4.3

4.5

4.5

4.5

4.5

4.5

4.5

7.7

12.5

7.9

6.5

5.8

10

7.1 

6.0

183.3

5.91

1.07

1.24

364

Nov.

5.5

2l! 

53

62

3?

22

16

13.5

11

10

8.9

7.9

7.4

6.8

6.5

6.5

6.5

11

18

20

15

12

18.5

41

*57

58

50

35

29

28

689.0

23.0

4.17

4.65

1,370

Dec.

29

24

18

15.5

15

26

25

33

32

30

74

67

37

26

20

17

15

IB" 13.5

74

140

~7BT 155

48

36

32

30

23

19.5

16.5 

15.5

1,196.5

38.6

7.01

8.08

2,370

Jan.

17

24

50

100

137

~SS 139

52

43

33

*31

26

26

25

51

59

44

40

43

41

36

45

42

50

41

33

28

24

21

18.5 

16.5

1,419.0

45.8

8.31

9.58

2,810

Feb.

15.5

15

13.5

12.5

12.5

12.5

12

11.5

11

11

12

11.5

11.5

11

10.5

10.5

10.5

10.5

11.5

14

16.5

16

15

*17

18

16.5

*16

18

17.5

-----

391.0

13.5

2.45

2.64

776

Mar.

22

21

38

58

43

31

43

46

38

30

25

22

21

19.5

18

17

17

16

15

54

a35

a45

a56

a62

a4?

a35

a30

a26

a30

a35 

a35

998.5

32.2

5.84

6.74

1,980

Apr.

a30

a25

a20

*18.5

18

16.5

17.5

15.5

15.5

13.5

14

13.5

13

12.5

12.5

12

11.5

11.5

11.5

10.5

10.5

10.5

10.5

10.5

10.5

To" 10

10

10

10

415.0

13.8

2.50

2.80

823

May

10

9.6

9.6

10.5

10.5

9.6

8.9

8.9

8.9

9.2

8.9

8.9

8.9

8.6

*8.0

7.6

7.6

7.6

7.9

8.2

*8.2

8.2

8.6

8.9

9.2

12.5

To75~

8.6

7.9

7.6 

7.4

275.5

8.89

1.61

1.86

546

June

7.6

7.6

11

9.2

7.9

8.6

9.6

11

13.5

I2T5-

9.6

8.2

7.9

8.2

8.2

7.9

7.6

*7.6

8.2

7.6

7.4

7.1

6.8

6.5

tt

6.8

6.5

6.8

6.8

-----

247.5

8.25

1.50

1.67

491

July

6.5

6.5

6.5

6.2

7.4

7.1

6.5

6.0

6.0

6.2

6.2

6.0

6.0

6.0

6.2

5.8

5.8

5.5

*5.5

5.5

5.5

5.5

573" 5.3

5.5

5.8

5.8

5.8

5.5

5.3 

5.3

184.0

5.94

1.08

1.24

365

Aug.

5.5

7.6

S78

6.0

5.5

5.5

*5.3

5.3

5.3

5.5

5.3

5.1

5.1

5.3

5.8

5.5

5.3

5.3

5.3

5.1

5.1

5.1

5.1

4.9

BTT

5.5

6.0

5.8

5.3

5.3 

5.3

169.9

5.48

0.995

1.15

337

Sept.

5.3

4.9

4.9

4.7

4.3

4.1

373

4.5

4.9

5.5

6.8

*5.4

5.1

5.1

5.1

5.1

5.1

5.0

4.9

5.3

5.3

5.3

4.9

5.1

6.8

6.8

6.0

6.0

7.6 

771

161.2

5.37

0.975

1.09

320

Calendar year 1955: Max 155 Mln 4.0 Mean 11.3 Cfsm 2.05 In. 27.98 Ac-ft 8,220

Water Water year year 1955-56: 1955-56: Max Max 155 155 Mln Mln 4.1 4.1 Mean Mean 17.3 17.3 Cfsm Cfsm 3.14 3.14 In. In. 42.74 42.74 Ao-ft Ao-ft 12,550 12,550

Peak discharge (base, 50 ofs).--Nov. 4 (2:50 a.m.) 79 ofs (1.62 ft); Nov. 26 (5:50 a.m.) 64 ofs 

(1.54 ft); Dec. 11 (7 p.m.) 114 ofs (1.82 ft); Dec. 21 (6 p.m.) 206 cfs (2.19 ft); Jan. 5 

(10:30 a.m.) 164 ofs (1.99 ft); Jan. 16 (10 a.m.) 64 ofs (1.45 ft).

* Discharge measurement made on this day.

a Ho gage-height record; discharge estimated on basis of records for stations on nearby streams.
58 SHERWOOD CREEK BASIN

Mason Lake near Union, Wash.

Location. Lat 47°19 I 15", long 122°57il5", in SEij- sec. 8, T. 21 N., R. 2 W., on right 

shore 12 miles southeast of Union.

Drainage area.--20.2 sq mi.

Records available.--July 1951 to September 1956 (fragmentary).

Gage. Staff gage read once daily at various times. Altitude of gage is 190 ft (from 

Topographic map).

Extremes. Maximum gage height observed during year, 3.70 ft Jan. 18; minimum observed, 

 1.34""ft Oct. 3.

1951-56: Maximum gage height observed, 5.02 ft Feb. 2, 1953; minimum observed, 

1.20 ft Oct. 1, 1952.

High water during period Mar. 25 to Apr. 1, 1951, reached a stage of 7.5 ft, from 

high-water marks.

Remarks.--No diversion above station. Beaver dams at outlet cause some change in lake 

elevation.

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.

1.36

1.36

1.34

-

-

1.66

1.70

1.72

.

-

-

-

-

_

-

-

-

-

_

-

-

1.80

-

_

_

2.28

2.28

2 33 -

Nov.

_

2.30

-

-

"

-

-

3.12

3.10

-

-

-

-

2.60

-

-

2.60

2.60

_

-

-

-

-

3.48

3.50

3.60

.

Dec.

_

3.46

-

-

"

-

-

-

_

-

-

_

-

_

_

-

_

-

_

.

-

-

-

_

_

3.64

3.62

3 .58

Jan.

_

_

-

_

-

-

-

-

3.57

_

3.52

3.52

3.50

3.48

_

3.70

_

-

_

_

_

_

3.51

3.51

_

_

_

Feb.

_

.

-

2.90

-

-

_

-

2.60

2.60

2.58

_

-

_

_

_

_

-

_

2.52

2.50

_

-

_

_

2.65

Mar.

_

_

-

.

-

-

-

-

_

_

_

_

-

2.82

2.80

2.78

2.76

_

«

_

_

-

.

^

_

_

3.20

Apr.

3.18

3.18

-

_

"

-

_

2.79

_

_

_

2.62

2.60

2.60

_

_

_

-

_

_

_

_

2.40

_

_

_

_

May

_

-

-

_

2.20 

2.20

2.18

-

-

_

2.10

2.10

2.08

2.09

_

_

.

2.04

2.00

1.98

_

1.98

-

.

_

_

1.96

1 .96

June

_

1.96

1.96

1.98

-

1.98

2.08

2.10

2.12

2.12

.

_

-

_

2.06

2.04

_

-

_

_

_

1.88

1.84

.

_

_

_

July

_

1.81

1.86

1.84

"

1.82 

1.82

1.80

-

_

_

_

1.72

1.70

1.68

1.68

-

_

-

_

1.50

-

-

1.40

_

_

1.60

Aug.

_

-

-

1.50

1.60

1.58

1.58

1.56

1.52

1.52

1.50

_

-

_

_

1.42

_

-

_

_

_

_

1.42

1.42

_

_

Sept.

1.40

1.40

1.38

1.38

-

-

_

-

_

1.41

-

_

1.40

1.38

_

_

_

-

_

1.38

1.40

1.40

-

.

_

_

_

1.40
GOLDSBOROUGH CREEK BASIN

Goldsborough Creek near Shelton, Wash.

Location. Lat 47°12'50", long 123°10'50", in SW£ sec. 15, T. 20 N., R. 4 W., on right 

bank 3^ miles west of Shelton and 5^ miles upstream from mouth.

Drainage area. 42 sq mi, approximately.

Records available.--June 1951 to September 1956.

Gage.--Water-stage recorder. Altitude of gage Is 205 ft (from topographic map).

Average discharge.--5 years, 119 cfs (86,150 acre-ft per year).

Extremes. Maximum discharge during year, 712 cfs Nov. 3 (gage height, 7.82 ft); minimum 

dally, 21 cfs Sept. 5-8, 15-20, 22-24.

1951-56: Maximum discharge, 1,090 cfs Jan. 31, 1953 (gage height, 8.33 ft); minimum, 16 cfs Sept. 23, 1951, Sept. 22-25, 1952.

Remarks.--Records fair except those for periods of no gage-height record or indefinite 

stage-discharge relation, which are poor. No regulation or diversion above station.

Revisions.--WSP 1246: Drainage area.

Rating tables, water year 1955-56, except period of indefinite stage-discharge 

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

Oct. 1 to Nov. 

20

Nov. 3 to Sept. 30

2.0 

2.3 63

3.0 

4.0

6.0

136

200

337

2.3 

3.0

21

72

147

4.0 255

6.0 485

8.0 735

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

Day

1

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ttotal

Mean

Cfsm

In.

Ac-ft

Oct.

24

23

24

32

37

30

30

64

131

130

82

118

76

60

52

48

44

41

40

40

38

37

37

139

266

 297

277

267

289

331

294

3,398

110

2.62

3.01

6,740

Nov.

236

280

683

658

470

336

252

182

154

 160

132

117

105

97

90

87

85

180

334

343

299

242

285

358

501

510

482

*407

336

304

8,705

290

6.90

7.71

17,270

Dec.

323

310

275

230

207

274

322

336

353

325

467

615

456

357

301

267

232

199

221

324

502

671

584

498

451

391

355

312

273

242

Z19

10,892

351

8.36

9.64

21,600

Jan.

216

247

320

441

527

558

481

407

362

326

292

269

260

250

352

502

503

467

470

473

426

414

409

 409

375

338

304

277

Z54

233

212

11,374

367

8.74

10.07

22,560

Feb.

194

184

176

171

170

162

152

144

137

134

165

156

141

132

122

115

116

116

124

149

165

172

155

 181

246

226

230

260

258

4,853

167

3.98

4.30

9,630

Mar.

317

427

460

469

409

346

352

431

396

340

288

252

Z34

218

203

191

183

178

175

181

247

292

429

495

418

366

323

297

323

347

362

9,949

321

7.64

8.81

19,730

Apr.

334

297

265

247

224

204

212

197

175

162

154

145

138

132

128

123

117

113

109

105

102

100

96

*94

91

88

86

85

84

J32

4,489

150

3.57

3.97

8,900

May

80

78

75

76

85

78

78

72

69

68

67

66

64

63

62

60

60

59

58

58

56

54

53

53

52

52

52

50

49

48 

 47

1,942

62.6

1.49

1.72

3,850

June

47

46

60

60

51

53

74

72

SI

66

63

59

54

63

65

54

51

53

65

55

50

47

44

44

43

42

41

40

39

39

1,623

54.1

1.29

1.44

3,220

July

38

37

37

37

42

15.

39

37

36

36

35

35

34

34

34

33

32

 31

30

29

29

29

27

27

27

27

27

27

26

.25 

26

1,006

32.5

0.774

0.89

2,000

Aug.

25

33

44

34

32

30

29

29

27

26

26

25

25

26

26

26

26

25

24

23

23

23

23

23

23

23

23

23

23

23 

23

814

26.3

0.626

0.72

1,610

Sept.

23

22

22

22

21

21

21

21

23

27

*32

27

24

22

21

21

21

21

21

21

22

21

21

21

22

25

24

22

25

5&

692

23.1

0.550

0.61

1,370

Calendar year 1955 : Max 683 Min 21 Mean 133 Cfsm 3.17 In. 42.92 Ac-ft 96,120

Water year 1955-56 : Max 683 Min 21 Mean 163 Cfsm 3.88 In. 52.89 Ac-ft 118,500

Peak discharge (base. 400 cfs).--Nov. 3 (12 m.) 712 cfs (7.82 ft); Nov. 25 (4:30 p.m.) 523 cfs 

(6.32 ft); Dec. 12 (3:45 a.m.) 676 cfs (7.55 ft); Dec. 22 (1:30 p.m.) 687 cfs (7.63 ft); Jan. 6 

(10 a.m. to 12 m.) 569 cfs (6.70 ft); Jan. 16 (8 to 9 p.m.) 543 cfs (6.48 ft); Mar. 4 (3 to 5 a.m.) 

479 cfs (5.95 ft); Mar. 8 (9:30 a.m.) 441 cfs (5.63 ft); Mar. 24 (3 a.m.) 523 cfs (6.23 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 14-18; stage-discharge relation Indefinite Sept. 11-30; discharge 

estimated on basis of records for stations on nearby streams.
60 SKOOKUM CREEK BASIN

Skookum Creek at Kamilche, Wash.

Location.--Lat 47°07'30", long 123°06'50", in NVf£ sec. 19, T. 19 N., R. 3 W., on right bank 

three-quarters of a mile southwest of Kamilche and 3 miles upstream from mouth.

Drainage area. 17.2 sq mi.

Records available.--June 1951 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 35 ft (from topographic map).

Average discharge.--5 years, 57.2 cfs (41,410 acre-ft per year).

Extremes.--Maximum discharge during year, 621 cfs Dec. 12 (gage height, 10.21 ft); minimum, 1.6 cfs Sept. 9 (gage height, 1.22 ft).

1951-56: Maximum discharge, 795 cfs Jan. 31, 1953; maximum gage height, that of 

Dec. 12, 1955; minimum discharge, 0.7 cfs Sept. 16, 1951; minimum gage height, that of 

Sept. 9, 1956.

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

Ho regulation. Probably some diversion for irrigation and farm use.

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

in cubic feet per second) 

(Shifting-control method used Nov. 19 to Dec. 11, Sept. 3o)

1.3 

1.6 

2.0 

3.0

Oct. 1 to Dec

2.5

10

23

67

Dec. 12 to Sept. 30

5.0 

7.0 

9.5

186 

333 

56O

1.2 

1.5 

2.0 

3.0

1.5

9.4

27

70

5.0 

7.0 

9.0

186

333

505

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

Day

1

2

3

4

5

6

7

8

9

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.

2^5

2.5

2.7

4.4

5.1

3.3

3.5

9.9

49

39

a!8.5

a25

a!5

all

a9.5

aS.l

a7.2

a6.5

ah. 8

a5.4

aS.l

a4.7

a4.5

*45

144

164

148

148

240

 5T5 319

1,671.2

53.9

3.13

3.61

3,310

Nov.

154

238

538

411

234

180

133

111

100

101

83

72

64

56

a53

a51

a5O

a90

219

253

210

158

149

186

276

312

314

246

183

174

5,399

180

10.5

11.67

10,710

Dec.

*190

180

155

130

117

151

150

153

158

164

386

499

273

188

148

126

105

92

90

171

229

437

 354

258

203

169

151

128

110

0^86

5,917

191

11.1

12.79

11,740

Jan.

84

102

161

238

284

-512

239

173

147

125

110

99

98

101

176

251

259

208

192

179

161

151

152

156

141

*125

108

98

88

78

£9.

4,865

157

9.13

10.52

9,650

Feb.

a66

a62

a59

59

60

58

54

51

49

50

66

68

66

62

57

47

T?

47

52

62

70

74

70

88

110

111

118

Igl

T2T

2,025

69.8

4.06

4.38

4,020

Mar.

197

273

276

269

206

159

206

241

194

155

131

112

98

89

80

74

69

66

62

67

*84

99

176

191

166

153

134

128

143

15O

170

4,618

149

8.66

9.99

9,160

Apr.

158

137

116

102

88

78

78

7O

62

57

52

48

45

43

41

39

37

35

34

32

30

29

*27

26

24

23

22

22

21

20

1,596

53.2

3.09

3.45

3,170

May

19

19

18

18

22

19

18

16

14.5

14.5

14.5

14.5

13.5

12

11.5

11

10.5

10

9.4

9.7

9.4

9.1

8.8

8.4

8.4

7.8

8.1

7.8

7.5

7.2

7 . 8

384.9

12.4

0.721

0.83

763

June

8.8

7.5

11

11

10

1O.5

18.5

16

22

16

14

11.5

11.5

*14

14.5

12.5

11

10.5

14.5

12

11

10

8.8

8.4

8.1

7.5

7.2

7.2

6.9

6^6

339.0

11.3

0.657

0.73

672

July

6.6

6.6

6.6

6.3

7^5

7.5

6.3

6.0

5.7

5.4

5.4

4.9

4.9

5.2

5.2

4.9

4.4

4.4

4.4

4.4

4.1

4.1

3.8

3.3

*3.6

3.6

3.6

3.3

3.1

3.1

O 0

£+2.

151.0

4.87

0.283

0.33

300

Aug.

3.1

4.6

5.7

4.6

4.1

3.6

3.3

3.1

3.1

2.8

3.1

3.1

2.8

2.8

3.1

2.8

2.8

2.6

2.6

2.4

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.2

2.2 

2.2

93.5

3.02

0.176

0.20

185

Sept.

2.4

2.4

2.4

2.4

2.2

2.2

*2^0

2'. 2

2.2

3.1

3.3

2.8

2.6

2.2

2.2

2.0

2.2

2.2

2.4

2.2

2.2

2.2

2.2

2.2

2.8

3.1

2.6

2.0

3.1

A ~\

* 1 ±

74.1

2.47

0.144

0.16

147

Calendar year 1955: Max 538 Min 1.7 Mean 68. 0 Cfsm 3.95 In. 53.65 Ac-ft 49,230

Water year 1955-56: Max 538 Min 2.O Mean 74.1 Cfsm 4.31 In. 58.66 Ac-ft 53,830

Peak discharee (base, 350 cfs). --Oct. 30 (3 to 4 p.m.) 358 cfs (7.31 ft): Nov. 3 (8 a.m.) 590 cfs

(9.78 ft); Dec. 12 (1:3O a.m.) 621 cfs (10.21 ft); Dec. 22 (12 m.) 444 cfs (8.32 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 stations on nearby streams.
DESCHUTES RIVER BASIN

Deschutes River near Rainier, Wash.

Location. Lat 46°51 I 10", long 122°40'00", in SW£ sec. 22, T. 16 N., R. IE., on right bank 

75 ft upstream from county road crossing, half a mile downstream from mouth of outlet 

from Reichel Lake, and 2-| miles southeast of Rainier.

Drainage area.--89.8 sq mi.

Records available.--June 1949 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 350 ft (from topographic map).

Average discharge.--? years, 293 cfs (212,100 acre-ft per year).

Extremes.--Maximum discharge during year, 5,620 cfs Dec. 12 (gage height, 13.06 ft); minimum, 33 cfs Sept. 24-26 (gage height, 2.74 ft).

1949-56: Maximum discharge, that of Dec. 12, 1955; minimum, 21 cfs Sept. 20, 1952; 

minimum gage height, 2.64 ft Sept. 20, Oct. 17, 1952.

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

Probably some small diversion for irrigation and domestic use. No regulation.

Revisions. WSP 1246: Drainage area.

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

and discharge, In cubic feet per second)

2.7

2.8 

3.0 

3.3 

3.6 

4.0 

4.5

30

38

61

115

178

279

433

5.0 

5.5 

6.0 

7.0 

8.0 

9.0 

11.0

600

790

990

1,430

1,950

2,550

3,850

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

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

45

44

44

53

135

94

83

234

1.040

948

459

288

218

178

150

131

119

109

102

94

89

83

80

83

316

539

385

360

562

830

604

8,499

274

3.05

3.52

16,860

Nov.

459

*602

1,300

1,360

1,050

642

463

369

308

308

282

248

223

199

171

176

169

215

1,180

730

516

404

385

783

2.440

1,850

1,910

1,150

870

802

21,564

719

8.01

8.93

42,770

Dec.

930

762

614

509

456

492

734

686

726

586

1,630

5.560

1,170

754

586

*506

430

588

583

2,630

2,830,

3,050

2,000

1,200

1,020

998

938

706

569

486

427

32,956

1,063

11.8

13.65

65,370

Jan.

420

456

1,250

1.910

1,850

1,630

1,240

862

678

573

522

479

529

525

864

1,280

1,140

882

726

734

649

600

*758

774

610

512

440

395

369

341

311

24,309

784

8.73

10.07

48,220

Feb.

285

273

259

254

259

265

268

276

262

248

257

411

407

344

291

248

246

233

233

254

294

302

271

?71

305

302

288

482

686 '

8,774

303

3.37

3.63

17,400

Mar.

614

1,010

1,150

966

632

466

519

686

512

404

350

314

296

276

271

279

302

344

*446

459

605

986

2.020

1,780

1,640

1,450

906

678

746

786

906

22,799

735

8.18

9.44

45,220

Apr.

706

563

476

433

404

366

379

372

354

357

407

414

423

446

436

379

338

302

*308

372

400

340

310

290

260

250

230

220

220

220

10,975

366

4.08

4.55

21,770

May

200

180

170

165

160

155

150

140

135

135

140

135

130

120

120

115

115

110

110

110

110

110

110

110

110

110

110

110

*109

111

117

4,012

129

1.44

1.66

7,960

June

117

113

111

117

115

115

127

127

154

169

194

154

133

121

125

119

121

111

121

135

125

115

106

100

94

89

85

82

78

16

3,549

118

1.31

1.47

7,040

July

75

71

66

64

*64

68

63

61

60

58

57

57

54

54

53

52

49

48

48

48

48

47

46

46

45

44

44

43

43

43

43

1,662

53.6

0.597

0.69

3,300

Aug.

43

49

15

54

47

45

44

43

43

42

41

41

41

*40

40

41

40

38

38

37

37

37

36

37

36

48

47

41

38

37

36

1,312

42.3

0.471

0.54

2,600

Sept.

35

36

35

35

35

34

34

35

35

38

11

40

37

35

35

35

34

34

34

34

35

34

34

33

33

34

37

36

35

40

1,062

35.4

0.394

0.44

2,110

Calendar year 1955 : Max 3,560 Mln 36 Mean 350 Cfsm 3.90 In. 52.91 Ac-ft 253,400

Water year 1955-56 : Max 3,560 Mln 33 Mean 387 Cfsm 4.31 In. 58.59 Ac-ft 280,600

Peak discharge (base. 2.OOP cfa).--Hov. 25 (10 a.m.) 2,650 cfs (9.16 ft); Dec. 12 ^ (5 V oa.m.) ~...,.,, 5,620 ~, 

cfs (13.06 ft); Dec. 20 (10 p.m.) 4,030 cfs (11.23 ft); Jan. 5 (1 a.m.) 2,400 cfs (8.75 ft)j Ma. 

(9 p.m.) 2,720 cfs (9.29 ft).

* Discharge measurement made on this day.

Note. No gage-height record Apr. 21 to May 28; discharge estimated on basis of recorded range 

in stage and records for stations on nearby streams.
62 WOODLAND CREEK BASIN

Woodland Creek near Olympia, Wash.

Location.--Lat 47°04'20", long 122°49'00", in SWij sec. % 4, T. 18 N., R. 1 W., on left bank 

1^ miles upstream from mouth and 4.4 miles northeast of Olympia.

Drainage area.--24.3 sq mi.

Records available. June 1949 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 25 ft (from topographic map).

Average discharge.--7 years, 30.1 cfs (21,790 acre-ft per year).

Extremes. Maximum discharge during year, 150 cfs Dec. 21 (gage height, 3.77 ft); minimum, 

11 cfs Oct. 6 (gage height, 1.23 ft).

1949-56: Maximum discharge, 204 cfs Feb. 9, 1951 (gage height, 4.46 ft); minimum, 

8.0 cfs Dec. 17-21, 1952; minimum gage height, 1.20 ft Aug. 7, 1953.

Remarks.--Records fair prior to Mar. 15, good thereafter. Some diversion for domestic 

use. No regulation.

Revisions. WSP 1216: Drainage area.

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

cubic feet per second) 

(Shifting-control method used Nov. 3-19, Feb. 6-24, Feb. 26 to Mar. 14)

Oct. 1 to Dec. 11

1.2 12

1.4 17.5

1.6 24

1.9 

2.3 

2.8

1.3 

1.6 

2.0

Dec. 12 to Sept. 30 

16.5

43

2.5 

3.0 

3.5

93

128

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

Day

1

2

3

4

5

6

7

8

9

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.

12.5

12.5

12.5

13

12.5

12

13.5

15.5

17.5

15.5

14

13.5

13.5

13.5

13

13

13

13

13.5

13

13

13

13

15

22

19

a!7

a!6

a25

a20

nl aj.3Q 

462.0

14.9

0.613

0.71

916

Nov.

al8

*a33

37

32

23

19

17.5

17.5

H

17.5

17.5

18.5

18.5

18.5

18.5

18.5

18.5

27

42

38

31

28

28

37

50

51

56

50

44

44

886.0

29.5

1.21

1.36

1,760

Dec.

45

45

43

39

41

46

46

49

47

50

79

79

68

60

56

*56

54

53

55

90

114

m112

104

93

89

86

81

76

73

71

2,121

68.4

2.81

3.25

4,210

Jan.

72

77

102

108

113

124

111

102

96

91

86

83

84

84

107

104

96

94

98

96

93

91

94

96

91

86

*82

81

79

75

73

2,869

92.5

3.81

4.39

5,690

Feb.

72

70

69

69

68

67

66

65

63

63

63

63

63

61

58

58

58

58

58

58

61

59

58

62

68

63

62

61

59

1,823

62.9

2.59

2.79

3,620

Mar.

64

65

75

80

73

68

83

84

79

73

70

67

65

63

61

60

58

58

*58

58

61

61

74

69

72

70

66

67

71

71

71

2,115

68.2

2.81

3.24

4,200

Apr.

69

65

60

59

58

57

57

56

56

56

55

54

53

52

51

51

50

50

*49

49

48

48

47

46

46

46

45

45

45

44

1,567

52.2

2.15

2.40

3,110

May

44

43

43

43

43

43

42

42

41

41

41

40

40

40

39

39

38

37

37

36

36

36

36

36

35

36

35

35

*34

34

34

1,199

38.7

1.59

1.84

2,380

June

33

33

35

34

33

34

34

34

35

35

34

33

33

33

33

33

32

32

34

32

32

32

31

31

30

30

29

29

29

 

29 i

971

32.4

1.33

1.49

1,930

July

28

28

28

28

*29

29

28

28

28

28

27

27

27

27

27

26

26

26

26

26

26

26

26

26

25

25

24

24

24

24 

p« ^o

820

26.5

1.09

1.25

1,630

Aug.

23

26

25

24

24

23

23

23

22

22

22

22

22

*22

22

22

21

21

21

21

21

20

20

20

20

20

20

19.5

19.5

19.5.

19 5

670.0

21.6

0.889

1.03

1,330

Sept.

19.5

19.5

19

19

18.5

18.5

18.5

18.5

19.5

20

20

19.5

19.5

19.5

19.5

19

19

18.5

18.5

18.5

18.5

18.5

18.5

18

18

18.5

18.5

18.5

19.5

17.5

566.0

18.9

0.778

0.87

1,120

Calendar year 1955 : Max 121 Min 11.5 Mean 25.2 Cfsm 1.04 In. 14.09 Ac-ft 18,260

Water year 1955-56: Max 124 Min 12 Mean 43.9 Cfsm 1.81 In. 24.62 Ac-ft 31,9OO

Peak discharge (base. 110 cfs1.--Dec. 21 (6 p.m.) 150 cfs (3.77 ft); Jan. 6 (7:30 a.m.) 133 cfs 

(3.60 ft); Jan. 15 (6 a.m.) Ill cfs (3.33 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and records for 

stations on nearby streams.
MCALLISTER CREEK BASIN 63

McAllister Springs near Olympia, Wash.

Location.--Lat 47°01'45", long 122°43'25", In SEv sec. 19, T. 18 N., R. IE., on right 

side of stilling pool just above city of Olympia control gates, 8 miles east of 

Olympia.

Records available.--March 1951 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is about mean sea level. Auxiliary waterstage recorder 30 ft downstream from base gage.

Average discharge.--5 years, 25.7 cfs (18,610 acre-ft per year).

Extremes.--Maximum daily discharge during year, 46 cfs Jan. 26; minimum daily, 21 cfs 

Oct. 1, 6, 7, Sept. 30.

1951-56: Maximum daily discharge, that of Jan. 26, 1956; minimum daily, 17.5 cfs 

Sept. 21, 1952, Aug. 12, 1953.

Remarks.--Records fair. City of Olympia diverts 2 to 8 cfs for municipal use. Gage pool 

regulated by low dam and flashboards. Backwater from tides occurs daily.

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

72

22

22

22

21

21

22

25

23

22

22

22

22

22

23

22

23

22

22

22

22

22

23

23

22

23

23

25

26 

2T

698

22.5

1,380

Nov.

24

*25

26

26

25

24

24

24

25

25

24

24

24

25" 23

24

24

25

25

25

26

24

25

25

26

26

26

26

27

27

747

24.9

1,480

Dec.

27

29

28

27

28

29

28

28

26

27

29

29

27

27

28

*29

30

31

32

33

33

34

34

34

34

34

34

35

36

36

37

953

30.7

1,890

Jan.

36

37

38

38

39

39

39

38

39

39

39

41

41

42

41

42

41

42

43

43

42

42

41

42

43

46

*¥¥

43

43

42

41

1,266

40.8

2,510

Feb.

41

40

39

39

39

38

39

39

38

39

40

40

41

41

39

38

40

39

39

39

40

41

41

41

40

44

4T

41

41

1,157

39.9

2,290

Mar.

40

39

41

38

39

39

39

38

38

38

37

37

37

36

35

36

35

35

*34

3?

35

37

36

38

40

39

39

38

38

37

36

1,159

37.4

2,300

Apr.

35

35

34

34

36

36

36

36

36

36

36

36

36" 38

36

34

35

34

*34

35

35

35

36

36

35

35

35

34

34

34

1,057

35.2

2,100

May

34

33

33

33

34

34

34

33

34

35

37

34

33

32

31

e31

30

30

33

32

30

30

29

30

30

31

33

32

*27

27

30

989

31.9

1,960

June

31

31

30

30

32

31

32

33

33

34

31

e31

32

32

34

31

31

30

31

30

30

e30

30

29

30

26

27

28

29

28

917

30.6

1,820

July

28

27

27

28

*30

31

29

29

27

e28

29

28

28

29

30

e29

e28

e27

e2424"

25

26

25

24

25

25

26

26

e26

26

25

839

27.1

1,660

Aug.

26

26

28

28

27

27

27

29

75

27

27

25

e2S

*27

27

27

27

27

27

26

26

26

26

26

26

26

26

26

26

26

25

825

26.6

1,640

Sept.

25

25

25

25

*25

25

25

26

25

25

24

24

24

24

24

23

23

23

23

24

24

23

22

23

e22

22

22

22

22

21

710

23.7

1,410

Calendar year 1955: Max 37 Mln 18.5 Mean 24.7 Ac -ft 17,840

Water year 1955-56: Max 46 Mln 21 Mean 30.9 Ac-ft 22,440

* Discharge measurement made on this day.

e Rating not determined for conditions of backwater other than 6 and 8 boards on rectangular weir; 

discharge estimated.

Note. Ho gage-height record Mar. 6-18, Mar. 28 to Apr. 2, Apr. 6-10, Aug. 14 to Sept. 4; discharge 

estimated or Interpolated.
b4 NISQUALLY RIVER BASIN

Nisqually River near National, Wash.

Location --Lat 46°45'10", long 122°05>00", in SW&wfc sec. 29, T. 15 N., R. 6 E., on right 

ihPn H ft ^stream from railroad bridge, 1 mile west of National, 2| miles west of 

Ashford, and 3 miles upstream from Mineral Creek.

Drainage area.--133 sq mi.

Records available.--May 1942 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,450 ft (from river-profile map).

Average discharge.--14 years, 771 cfs (558,200 acre-ft per year).

ageht ft) '

' 1 °' 34 ft) '' ^

Remarks. -Records good except those for periods of no gage-height record or shifting 

control, which are fair. Small diversion for domestic use. Slight regulation at low 

water by powerplant of Mount Rainier National Park on Paradise River

Revisions (water years_|_.--WSP 12R6- 1947(P), 19SO(M).

Rating tables, water year 1955-56, except periods of shifting control 

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

Oct. 1 to De Dec. 12 to Sept. 3O

3.5 325

4.0 560

5.0 1,250

6.0 

7.5

2,ZOO 

4,130

3.5 

4.0

4.5 

5.0

250

460

760

1,160

6.0 2,160

7.0 3,410

8.1 5,120

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

346

346

325

499

528

438

438

637

1,920

2,020

1,370

1,060

917

846

780

693

657

639

582

534

492

443

424

598

*a4.OOO

al,800

al,200

31,350

a2 , OOO

2,500

1,660

32,042

1,034

7. 7 7

8.96

63 , 550

Nov.

1,190

1,200

*1,910

3,430

2,680

1,900

1,480

1,370

1,760

4.090

2,160

al,6OO

al,200

al.050

a950

3750

699

723

910

754

742

711

711

846

1,310

1,780

2,530

2,040

1,630

1,540

45,646

1,522

11.4

12.76

90,540

Dec.

1,360

1,140

979

865

813

800

748

742

*761

723

2,860

*5.100

2,280

1,510

1,160

982

838

732

767

1,050

1,850

3,680

2,670

1,800

1,360

1,170

974

823

725

666

616

42,546

1,372

10.3

11.90

84,390

Jan.

594

588

854

1.500

1,220

1,080

918

788

666

612

576

548

564

548

886

1,130

998

966

926

878

816

802

830

739

666

*618

570

548

515

471

425

23,640

763

5.74

6.61

46,890

Feb.

42O

415

401

383

374

365

361

349

333

333

361

420

365

341

297

285

325

313

305

301

293

285

274

274

271

264

260

305

313

9,586

331

2.49

2.68

19,010

Mar.

329

383

410

361

333

309

309

297

285

271

257

257

257

257

*257

257

271

309

374

374

510

654

1,090

1,250

1.560

1,250

966

809

886

886

838

16,656

537

4.04

4.66

33.O4O

Apr.

732

660

606

612

582

537

600

594

594

697

862

926

*1,070

1,500

1,410

1,280

1,120

1,050

1,200

1,570

2,080

2.270

1,930

1,580

1,390

1,380

1,340

1,230

1,110

1,010

35,322

1,111

8.35

9.32

66,090

May

942

918

918

918

958

990

1,050

1,230

1,440

1,620

1,450

1,210

1,010

950

1,030

1,450

2,170

*2,850

5.110

2,910

2.E50

1,970

2,080

1,910

1,640

1,680

1,570

1,540

1,460

1,950

2,450

49,424

1,594

12.0

13.82

98,050

June

2.290

1,850

1,750

1,590

1,560

1,200

1,170

1,180

1,540

1,640

1,580

1,300

1,230

1,290

1,380

1,340

1,410

1,450

1,950

1,760

1,430

1,330

1,330

1,140

998

974

1,250

1,430

*1,280

1,090

42,312

1,410

10.6

11.83

83,920

July

1,010

990

1,010

950

1,050

1,210

1,110

1,270

1,510

1,580

1,560

1.650

1,530

1,250

1,040

1,030

1,030

1,160

1,380

1,600

1,460

1,260

1,120

1,100

1,030

902

795

704

690

672

672

35,325

1,140

8.57

9.88

70,070

Aug.

624

570

559

476

488

526

588

642

*678

642

678

704

8O2

894

878

672

588

594

648

690

718

718

697

612

612

537

482

450

532

564

564

19,427

627

4.71

5.43

38,530

Sept.

564

455

410

401

430

460

510

520

498

425

440

357

349

361

396

410

455

495

520

476

*374

317

321

392

435

455

374

365

435

476

12,874

429

3.23

3.60

25,540

Calendar year 1955: Max 5,100 Min 231 Mean 922 Cfsm 6.93 In. 94.12 Ac-ft 667,600

Water year 1955-56: Max 5,100 Min 257 Mean 991 Cfsm 7.45 In. 101.45 Ac-ft 719,600

Peak discharge (base. 2.600efs). Oct. 10 (l a.m.) 2,650 cfs (6.40 ft); Oct. 25 (time unknown) 

6,080 cfs; Oct. 29 (6:2O p.m.) 4,ISO cfs (7.53 ft); Nov. 4 (3:4O p.m.) 4,210 cfs (7.55 ft); Nov. 10 

(1 a.m.) 6,410 cfs (8.80 ft); Nov. 27 (10 a.m.) 2.660 cfs (6.41 ft); Dec. 12 (12:3O a.m.) 8,280 cfs 

(9.70 ft); Dec. 22 (3:30 p.m.) 4,120 cfs (7.49 ft); May 20 (2:45 a.m.) 3,200 cfs (6.85 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 2 discharge measurements and records for 

nearby stations.

Note. Shifting-control method used Oct. 1-24, Dec. 15 to June 25.
NISQUALLY RIVER BASIN 65

Mineral Creek near Mineral, Wash.

Location. Lat 46 0 44'20", long 122°08'40", in SWij sec. 35, T. 15 N., R. 5 E., on right bank 

three-eights of a mile downstream from railroad bridge, 1 mile upstream from mouth, and 

Z\ miles northeast of Mineral.

Drainage area. 74.3 sq mi.

Records available.--June 1942 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,340 ft (from topographic map).

Average discharge.--14 years, 380 cfs (275,100 acre-ft per year).

Extremes.--Maximum discharge during year, 7,400 cfs Dec. 11 (gage height, 9.15 ft), from 

rating curve extended above 3,400 cfs; minimum, 33 cfs Sept. 24; minimum gage height, 

2 20 ft Oct 3

1942-56:' Maximum discharge, 7,600 cfs Dec. 9, 1953 (gage height, 9.02 ft), from 

rating curve extended above 3,400 cfs; minimum, 19.5 cfs Sept. 22, 23, Oct. 6-10, 13, 

14, 1952; minimum gage height, 1.40 ft Sept. 22, 23, 1950.

Remarks. Records good except those for periods of shifting control, which are fair, and 

those for period of no gage-height record, which are poor. No regulation or diversion 

above station.

Revision^.--WSP 1246: Drainage area.

Rating tables, water year 1955-56, except periods of shifting control (gage 

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

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

3.3 

3.6

158

239

342

470

4.0 

4.5 

5.0 

6.0 

7.0

680

1,010

1,430

2,600

4,050

1.9 

2.1 

2.3 

2.5 

2.7 

3.0 

3.3

34

51

72

100

136

205

300

3.6

4.0 

4.5 

5.0 

6.0 

7.0

430

640

980

1,430

2,600

4,050

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

Day

1

2

3

4

5

6

7

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.

69

64

63

170

252

168

158

417

1,480

1,280

849

638

510

399

327

285

245

219

202

186

168

153

146

192

689

828

692

*842

1,550

1,830

1,270

16,341

527

7.09

8.18

32,410

Nov.

947

1,440

2,400

2,940

2,240

1,520

1,100

919

835

856

746

638

555

466

399

366

320

623

1,290

870

728

600

620

1,210

2,470

2,710

2,560

1,750

1,280

1,180

36,578

1,219

16.4

18.31

72,550

Dec .

1,120

947

794

668

585

595

560

570

*638

570

5,260

*3,860

1,640

1,060

816

706

590

500

558

1,160

1,980

5,780

2,190

1,550

972

865

712

558

465

590

536

54,795

1,122

15.1

17.42

69,010

Jan.

336

336

872

1.890

1,410

1,140

900

712

580

495

445

421

470

465

976

1,250

1,040

964

924

948

830

809

858

718

596

*515

445

398

340

296

259

22,638

730

9.83

11.33

44,900

Feb.

244

235

223

211

202

198

195

185

180

173

190

300

235

205

180

180

180

173

168

171

173

164

157

153

149

149

149

211

244

5,577

192

2.58

2.79

11,060

Mar.

453

670

585

403

300

250

247

244

205

182

171

166

166

162

*171

180

188

241

344

354

662

971

,710

,540

,750

,480

,000

802

956

908

823

18,284

590

7.94

9.15

36,270

Apr.

664

574

505

530

520

460 552"

530

546

652

781

802

*924

1,050

1,030

932

823

788

908

1,180

1,480

1,430

1,160

980

872

872

844

730

676

618

24,413

814

11.0

12.22

48,420

May

574

541

558

585

602

629

670

754

823

972

795

634

525

500

563

742

972

*1.130

1,130

948

724

640

634

552

460

455

403

340

556

412

465

20,068

647,

8.71

10.04

39,800

June

403

316

312

293

286

290

352

328

320

344

316

259

211

250

250

244

262

247

312

286

253

238

232

220

214

202

202

198

*190

178

7,988

266

3.58

4.00

15,840

July

155

130

125

125

140

150

135

125

120

115

115

110

105

100

98

92

85

80

75

71

69

67

65

63

61

60

58

57

56

55

55

2,917

94.1

1.27

1.46

5,790

Aug.

54

62

75

64

56

52

49

47

*47

47

46

46

45

45

44

44

45

44

43

42

41

41

41

41

47

65

52

46

44

42

41

1,498

48.3

0.650

0.75

2,970

Sept.

40

40

40

40

40

38

37

36

38

43

58

48

43

41

40

40

39

37

36

38

42

39

35

34

35

36

43

40

46

66

1,228

40.9

0.550

0.61

2,440

Calendar year 1955: Max 3,860 Mln 43 Mean 515 Cfsm 6.93 In. 94.12 Ac -ft 372,900

Water year 1955-56: Max 3,860 Mln 34 Mean 525 Cfsm 7.07 In. 96.26 Ac -ft 381,500

Peak: discharge (base, 2,700 cfs). --Nov. 4 (3 p.m.) 3,190 cfs (6.42 ft); Nov. 26 (11:30 p.m.) 2,980

cfs (6.27 ft); Dec. 11 (9:15 p.m.) 7,400 cfs (9.15 ft); Dec. 22 (3 p.m.) 4,370 cfs (7.20 ft).

Discharge measurement made on this day.

Note. No gage-height record July 1 to Aug. 8; discharge estimated on basis of records for 

tions on nearby streams. Shifting-control method used Dec. 2-11, June 16 to Sept. 3O.
66 NISQUALL? RIVER BASIN

Alder Reservoir at Alder-, Wash.

Location -Lat 46 -48; 05", long 122°18'30", in NW^ sec . 9, T. 15 N. , R. 4 E. , near left end 

^FTTder Dam on Nisqually River, 1 mile west of Alder and 4j miles upstream from Mashel

Drainage area. 286 sq mi.

Records available. --November 1944 to September 1956.

datum

? tage rf^order - Datum of gage is 7.61 ft below mean sea level, datum of

y Taooma) - Prlor to July 8 - 1946, staff gage at same site and

Extremes --Maximum contents during year, 231,400 acre-ft July 30 (gage height, 1,206.92 

TW^minimum, 138,700 acre-ft Mar. 20 (gage height, 1,171.36 ft).

1944-56: Maximum contents, 232,000 acre-ft Aug. 2, 1955 (gage height 1 207 " ' 

minimum °bserved (since reservoir first filled), 93,990 acre-ft Feb. 16/1949 (g; 1,207.06 ft) ; 

;age

Remarks.--Reservoir is formed by concrete arch dam; storage began Nov. 7, 1944- dam compleTed in 1945. Capacity, 99,170 acre-ft between gage heights 1,114 ft (lower limit 

? ^?nling T86 ! and ^i77 f^ (gage heiSht of spillway) 6 Water can be controlled 

*L I ^ fnn ° §age £eight 1>207 ft ' usable capacity, 179,600 acre-ft. Dead 

K,°M? ' f <T acr. e -ft - Figures given herein represent total contents. Water is used by city of Tacoma for power production.

Capacity table (gage height, In feet, and contents, In acre-feet) 

(Prepared by city of Tacoma from project surveys and maps)

1,170

1,180

1,190

1,200

1,207

135,800

158,300

183,300

210,800

231,700

Contents, In acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21

22 

23 

24 

25

26 

27 

28 

29 

30 

31

W

Oct.

205,000 

203,300 

201,300 

199,800 

198,400

196,600 

195,200

196,300 

205,000 

211,400

213,700 

214,900 

214,900 

214,600 

214,600

214,600 

213,700 

212,900 

21.2,000 

210,600

209,400 

208,200 

207,400 

206,200 

210,600

212,900 

214,000 

215,800 

222,300 

223j800 

222,300

1,203.87 

+15,200

Nov.

222,000 

224,700 

224,700 

224,700 

221,700

220,800 

220,800 

222,300 

224,400 

227,400

224,100 

219,000 

216, LOO 

215,800 

214,600

213,700 

212,300

212,900 

216,600 

218,100

218,100 

217,800 

217,500 

221,400 

226,500

226,800 

222,600 

221,700 

221,100 

219,600

1,203.03 

-2,700

Dec.

218,100

218,400 

219,600 

220,200 

220,200

220,800 

221,100 

221,700 

222,900 

223,500

227,400

224,100 

225,000 

223,800 

223,500

224,700 

225,600 

225,300 

225,600 

225,000

225,000 

227,400 

222,900 

219,300 

219,600

221,400 

222,300 

222,600 

221,400 

220,800 

220,800

1,203.40 

+1,200

Jan.

222,300 

223,800 

224,700

224,100 

221,100

220,500 

219,000 

220,500 

220,800 

220,500

220,500 

220,500 

220,800 

221,100 

224,700

£24,700 

220,800 

220,500 

221,700 

222,900

223,500 

224,100 

223,200 

223,500 

223,500

223,200 

222,000 

221,100 

220,200 

218,700 

216,600

1,202.00 

-4,200

Feb.

214,600

212,600 

210,600 

208,500 

206,800

204,400 

202,400 

200,100 

197,800 

195,500

194,700 

194,200 

192,900 

191,000 

188,700

186,100 

184,000 

182,500 

181,000 

179,200

177,100 

175,400 

173,000 

171,000 

169,000

167,000 

165,000 

164,000 

162,800

1,181.91 

-53,800

Mar.

162,000 

163,000 

164,000 

164,000 

163,000

161., 600 

160,100 

158,700 

157,100 

155,200

153,600 

151,500 

149,900 

147,800 

145,600

143,700 

141,800 

140,000 

139,600 

138,700

139,400 

141,800 

148,800 

154,800 

162,300

167,700 

170,000 

171,500 

173,600 

175,600 

177,400

1J.87.67 

+14,600

Apr.

178,400 

178, 7OO 

178,400 

178,200 

177,600

176,600 

176,100 

175,900 

175,400

175,600

176,900 

177,900 

180,000 

182,200 

181,000

179,700 

180,500 

181,700 

183,500 

186,800

191,800 

196,600 

200,100 

202,100 

203,300

204,400 

205,300 

205,900

205,900 

205,600

1,198.20 

+28,200

May

205,600

205,600 

205,600 

205,600 

206,500

207,600 

208,500 

210,000 

210,800 

212,900

213,700 

214,000 

213,700 

214,000 

214,900

216,900 

221,100 

224,400 

225,600 

225,900

223,800 

222,600 

222,300 

221,700 

221,700

223,200 

224,100 

224,400 

224,400 

226,200 

228,600

1,206.02 

+23,000

June

228,600 

226,200 

224,700 

224,400 

224,400

224,100

224,700 

225,000 

225,300 

226,200

227,100 

227,100 

226,800 

226,500 

226,800

226,500 

226,800 

226,800 

227,700 

228,600

228,600 

228,300 

227,700 

226,800 

226,800

227,100 

228,000 

229,300 

230,200 

230,500

1,206.59 

+1,900

July

230,500 

230,500 

230,200 

229,900 

229,900

230,200 

229,600 

229,600 

230,200 

230,500

229,300 

229,900 

230,800 

229,600 

229,000

229,000 

229,300 

229,900 

231,100

230,200

229,300 

229,900 

230,800 

231,100 

231,100

231,100 

230,500 

230,800 

231,100 

230,500 

229,600

1,206.31 

-900

Aug.

228,600 

227,4OO 

226,200 

226,200 

226,200

225,900 

226,200 

226,800 

227,100 

227,400

228,000 

228,600 

229,000

228,600 

228,000

227, 100 

225,300 

224,700

224,700 

225,000

225,300 

225,600 

226,200 

225,900 

226,200

226,500 

226,200 

225,600 

225,000 

225,000 

225,000

1,204.84 

-4,600

Sept.

225,500 

225,300 

225,300 

224,400 

223,500

222,900 

221,400 

221,400 

221,100 

219,900

219,000 

217,500 

216,400 

214,900 

214,300

213,200 

212,000 

210,300 

207,900 

205,000

204,200 

203,600 

203,600 

202,700 

202,400

201,800 

201,000 

199,800 

198,900 

198,600

1,195.82 

-26,400

Calendar year 1.955. ................... * +300

Water year 1955-56-................... * -8,500

t Elevation, In feet, at end of month. 

* Change In contents In acre-feet.
NISQUALLY RIVER BASIN 67

La Grande Reservoir at La Grande, Wash.

Location. Lat 46°49'20", long 122°18'1Q", in SE^- sec. 33, T. 16 N., R. 4 E., at left end 

of gate control structure, 1 mile southeast of La Grande and l| miles downstream from 

Alder Dam.

Drainage area. 289 sq mi.

Records available.--January 1945 to September 1956. January 1945 to September 1951 included in combined adjustment to monthly flow of Nisqually River at La Grande. Monthend contents January 1945 to September 1950 published in WSP 1316.

Gage. Water-stage recorder. Datum of gage is 7.61 ft below mean sea level, datum of 

1929 (levels by city of Tacoma). Prior to June 12, 1947, month-end gage heights furnished by city of Tacoma from temporary gages in pool above dam.

Extremes. Maximum contents during year, 2,589 acre-ft Mar. 7 (gage height, 933.3 ft); 

minimum observed, 1,370 acre-ft Aug. 24 (gage height, 900.0 ft).

1947-56: Maximum contents, 2,760 acre-ft May 14, 1950 (gage height, 936.4 ft); minimum observed (since reservoir first filled), that of Aug. 24, 1956.

Remarks. Reservoir is formed by concrete dam completed in 1944; storage began February 

1945. Usable storage, 1,050 acre-ft between gage heights 910 ft (minimum practical 

head) and 935 ft (normal reservoir level). Dead storage, 1,630 acre-ft. Figures 

given herein represent total contents. Water used by city of Tacoma for power production.

Month-end gage height and total contents, water year October 1955 to September 1956

Month

Oct. 31..................... .....

Calendar year 1955 .............

Mar . 31 ..........................

Apr . 30 ..........................

May 31 ..........................

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

Water year 1955-56 .............

Gage height 

(feet)t

-

926.1

926.3

931.3

928.6

-

Contents 

(acre-feet)

-

2,228

2,237

2,484

2,347

-

Change In contents 

(acre -feet)

-1-102

-76

-283

-1-317

-134

-1-9

-224

+204

-137

+63

ge height at 12 p.m.
NISQUALLY RIVER BASIN

Nlsqually River at La Grande, Wash.

Location.--Lat 46°50'30", long 122°19'35", in SE^ sec. 29, T. 16 N., R. 4 E., on right 

bank half a mile downstream from city of Tacoma powerplant, half a mile northwest of 

La Grande, and three-quarters of a mile upstream from Mashel River.

Drainage area. 292 sq mi.

Records available.--September 1906 to October 1911, November and December 1911 (gage 

heights only), October 1919 to September 1931, October 1943 to September 1956. 

Monthly discharge only for some periods, published in WSP 1316. Published as below 

Little Nisqually River, near La Grande" 1906-10, and as "near La Grande 1912, 1919- 

31.

Gage.--Water-stage recorder. Altitude of gage is 490 ft (from river-profile map).

Sept. 5, 1906, to Sept. 8, 1910, staff gage just below site of diversion dam 4 miles 

upstream at different datum. January 1910 to December 1911, staff gage at La Grande 

powerhouse site; datum at mean sea level (levels by city of Tacoma). January 1920 to 

September 1931 water-stage recorder at approximately same site as that of first staff 

gage at datum 921.17 ft above mean sea level (levels by city of Tacoma). Dec. 7, 

1943, to Feb. 8, 1945, water-stage recorder 600 ft downstream from La Grande powerhouse at different datum.

Average discharge.--30 years (1906-11, 1919-31, 1943-56), 1,375 cfs (995,500 acre-ft per 

year), adjusted for storage.

Extremes.--Maximum discharge during year, 19,200 cfs Dec. 12 (gage height, 9.37 ft); minimum, 434 cfs Nov. 18 (gage height, 2.72 ft); minimum daily, 455 cfs Sept. 23.

1906-11, 1919-31, 1943-56: Maximum discharge, 19,500 cfs Dec. 12, 1921 (includes 

flow in power conduit); practically no flow on many occasions at site near La Grande 

as result of regulation.

Remarks. Records good except those for period Dec. 12-21, which are fair. Flow regulated by city of Tacoma powerplant at La Grande since December 1943, by Alder Reservoir 

(see p. 66) since November 1944, and by La Grande Reservoir (see preceding page) since 

February 1945. All diversions returned to river above gage.

Revisions (water years).--WSP 1216: Drainage area. WSP 1316: 1927-28(M), 1949-50.

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

Day

1

2 

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

1,390

1,360 

1,510 

1,660

1,690

1,590

1,500

1,300

876

1,725

1,790 

1,690

1,740

1,750

1,360

1,200

1,510

1,510

1,470

1,560

1,470

1,280

1,130

1,640 

2,180

2,180

1,850

1,770

2,000

5^190

56,746

1,831

112,600

+15,280

Nov.

3,040

2,890 

7,020 

9,820

8,990

5,030

*3,170

2,010

1,970

4,250

5,520 

5,500

3,610

1,910

1,940

1,980

1,860

1,650

1,630

1,600

1,860

1,830

1,900

1,400 

3,970

7,550

10.400

6,320

4,580

4,800

120,000

4,000

238,000

-2,790

Dec.

4,670

2,910 

1,920 

1,820

2,040

1,730

1,730

1,860

1,600

1,630

7,740 

*15.000

5,090

4,020

2,720

1,690

1,600

1,600

1,950

5,900

*7,750

11,200

11,000

7,280 

3,660

2,470

2,200

2,150

2,540

1,860

1,540

122,870

3,964

243,700

+1,300

Jan.

823

1,040 

2,790 

6,430

6,620

4,350

4,100

1,620

1,760

1,820

1,580 

1,410

1,530

1,540

1,130

4,310

5,700

3,460

2,020

*2,160

2,130

2,120

3,350

1,990 

1,790

,890

,880

,830

,740

,790

1,930

78,633

2,537

156,000

-4,250

Feb.

1,920

1,870 

1,880 

1,800

1,720

1,800

1,800

1,840

1,780

1,740

1,340 

1,360

1,640

1,720

1,780

1.950

1,760

1,500

1,470

1,580

1,670

1,570

1,740

1,680 

1,590

1,560

1,670

1,690

1,690

49,110

1,693

97,410

-54,080

Mar.

1,640

1,590 

1,480 

1,490

1,720

1,770

1,730

1,750

1,760

1,690

1,550 

*1,590

1,550

1,640

1,710

1,700

1,730

1,730

1,740

1,650

1,750

1.890

1,890

1,810 

1,690

1,790

1,820

1,700

1,720

1,830

1,670

52,770

1,702

104,700

+14,920

Apr.

1.580

1,690 

1,750 

1,730

1,850

1,940

1,840

1,590

1,820

1,740

1,650 

*1,670

1,750

2,070

3,940

3,640

2,080

1,670

1,610

1,680

1,960

1,970

2,050

2,210 

2,210

2,230

2,230

2,170

2,240

2,170

60,730

2,024

120,500

+28,070

May

1,810

1,850 

1,880 

1,870

1,520

1,470

1,780

1,830

2,230

2,230

2,230 

2,230

2,150

1,570

1,510

1,630

1,670

3,160

4,790

4,740

5,020

4,030

3,340

3,390 

*2,490

1,790

1,890

1,890

1,990

1,840

2,050

73,870

2,383

146,500

+23,010

June

3,390

5.890 

3,440 

2,470

1,960

2,000

1,660

1,950

1,960

1,960

1,890 

1,970

1,990

2,000

2,020

2,000

2,020

2,070

2,100

1,970

1,990

1,990

1,990

1,960 

1,450

1,170

1,150

1,090

1,250

1,250

60,000

2,000

119,000

+2,170

July

1,320

*1,290 

1,370 

1,290

1,300

1,300

1,670

1,550

1,330

1,780

2,180 

1,600

1,240

2,040

1,620

1,270

1,140

1,030

912

2,260

2,210

1,270

748

1,080 

1,250

1,120

1,140

885

582

1,210

1,170

42,157

1,360

83,620

-1,120

Aug.

1,200

1,490 

1,290 

664

516

869

583

*537

514

666

521 

521

672

1,160

1,270

1,320

1,480

1,020

820

732

747

756

798

656 

683

726

738

750

724

654

582

25,659

828

50,890

-4,400

Sept.

612

534 

492 

786

958

834

1,210

708

720

1,170

984 

1,060

1,070

904

678

1,140

1,040

1,230

1,590

1.890

*857

574

455

760 

714

755

838

942

862

736

27,103

903

53,760

-26,540

Adjusted for change in reservoir contents

Mean

Cfsm

In.

Ac-ft

2,080

7.12

8.21

127,900

3,953

13.5

15.10

235,200

3,985

13.6

15.73

245,000

2,469

8.46

9.75

151,800

753

2.58

2.78

43,330

1,945

6.66

7.68

119,600

2,497

8.55

9.54

148,600

2,757

9.44

10.88

169,500

2,037

6.98

7.78

121,200

1,342

4.60

5.30

82,500

756

2.59

2.99

46,490

457

1.57

1.75

27,220

Calendar year 1955 : 

Water year 1955-56:

Max 15,000 

Max 15,000

Min 532

Min 455

Mean 1,971 

Mean 2,103

Ac-ft 

Ac-ft

1,427,000 

1,527,000

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean 1,971 

Mean 2,092

Cfsm 6.75 

Cfsm 7.16

In. 91.62 

In. 97.49

Ac-ft 

Ac-ft

1,427,000 

1,518,000

Discharge measurement made on this day. 

t Change in contents, in acre-feet, in Alder and La Grande Reservoirs.
NISQUALLY RIVER BASIN 

Mashel River near La Grande, Wash.

69

- , in NW^SEi sec. 21, T. 16 N., R. 4 E., on right 

[Ortheast of La Grande, and 3^ miles upstream from

Location.--Lat 46°51'25", long 122°18'05 

bank 50 ft below bridge, l| miles nor 

mouth.

Drainage area. 80.7 sq mi.

Records available. October 1940 to September 1956.

Gage. Water-stage recorder. Datum of gage is 619.53 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947.

Average discharge. 16 years, 232 cfs (168,000 acre-ft per year).

Extremes.--Maximum discharge during year, 3,760 cfs Dec. 21 (gage height, 7.80 ft); minimum, 15 cfs Sept. 10 (gage height, 2.56 ft).

1940-56: Maximum discharge, 7,980 cfs Dec. 11, 1946 (gage height, 9.30 ft), from 

rating curve extended above 3,200 cfs; minimum, 4.5 cfs Sept. 24, 1952 (gage height, 

1.72 ft) .

Remarks. Records fair except those below 50 cfs, which are poor. Small diversion for

city of Eatonville water supply. Some regulation at low water by millpond in Eatonville.

Revisions (water years). WSP 1246: Drainage area. WSP 1286: 1948.

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

in cubic feet per second) 

(Shifting-control method used Oct. 1-8, Dec. 26 to Apr. 21)

Oct. 1 to Dec. 21 Dec. 22 to Sept. 30

3.0 

3.2 

3.4 

3.6

4.0 

4.3 

4.6

156

213

318

450

Note.--Same as following table above 4.6 ft.

2.5 

2.7 

2.9 

3.1 

3.3 

3.5 

3.7

82

114

154

5.5 

6.0 

7.0

229

325

450

670

1,020

1,450

2,620

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tbtal

Mean

Cfsm

In.

Ac-fb

Oct.

46

40

40

122

213

111

86

177

1,040

1.080

522

314

216

156

126

107

92

82

78

75

68

65

63

68

424

634

470

470

828

1,020 

*676

9,509

307

3.80

4.38

18,860

Nov.

533

682

919

1,120

926

628

465

412

391

891

610

417

322

235

204

198

170

261

985

485

359

288

280

633

1,700

1,800

1,860

1,100

863

891

20,628

688

8.53

9.51

40,920

Dec.

821

676

538

412

381

417

450

*480

506

422

1,550

2,250

1,040

694

560

511

436

372

500

1,670

2,270

2,500

1,510

1,080

828

765

652

500

393

325

284

25,793

832

10.3

11.89

51,160

Jan.

333

349

905

1,160

1,080

1,100

793

577

446

369

333

290

318

325

730

758

577

500

*465

414

389

357

511

423

353

284

249

226

205

177 

154

15,150

489

6.06

6.98

30,050

Feb.

148

147

146

146

163

172

200

202

184

170

180

377

294

224

166

148

159

152

141

170

221

197

168

156

154

150

152

377

405

5,669

195

2.42

2.61

11,240

Mar.

349

588

646

460

325

255

277

304

241

200

170

*156

168

170

187

216

249

337

441

418

658

835

1,660

1,380

1,730

1,240

786

610

706

688 

634

17,084

551

6.83

7.87

33,890

Apr.

511

423

361

381

377

311

385

377

369

450

550

*538

594

652

599

495

410

393

460

582

688

627

475

373

318

318

304

308

314

255

13,193

440

5.45

6.08

26,170

May

221

197

190

194

218

221

252

249

261

311

274

229

194

175

180

229

308

353

34T

294

221

184

192

175

*150

154

159

133

124

146 

163

6,692

216

2.68

3.08

13,270

June

144

122

125

144

152

148

161

156

163

216

287

197

154

195

381

418

446

314

538

550

373

268

207

172

146

127

114

*109

100

92

6,719

224

2.78

3.10

13,330

July

82

77

72

67

70

92

16

66

64

61

59

56

52

47

42

38

35

33

30

28

27

27

27

26

25

24

24

23

23

23 

23

1,419

45.8

0.568

0.65

2,810

Aug.

23

27

50

29

26

24

*24

23

21

21

20

20

18.5

18.5

19.5

18.5

18

17.5

17

Tf

17

17

17.5

17.5

22

97

70

48

38

35 

29

860.5

27.8

0.344

0.40

1,710

Sept.

27

24

21

21

21

24

21

18

17.5

TT5

42

38

29

*24

23

21

19.5

19.5

18

18.5

23

19.5

17.5

18

19.5

22

39

28

35

48

734.0

24.5

0.304

0.34

1,460

Calendar year 1955: Max 2,500 Min 29 Mean 331 Cfsm 4.10 In. 55.66 Ac-ft 239,600

Water year 1955-56: Max 2,500 Min 17 Mean 337 Cfsm 4.18 In. 56.89 Ac-ft 244,900

Peak discharge (base. 1.500 efs). Nov. 19 (4 a.m.) 1,530 cfs (6.08 ft); Nov. 27 (3 a.m.) 2,270 

ofs (6.73 ft); Dec. 11 (10:30 p.m.) 3,600 cfs (7.69 ft); Dec. 21 (7 p.m.) 3,760 cfs (7.80 ft)j 

Mar. 23 (7 to 9 p.m.) 1,990 cfs (6.70 ft).

* Discharge measurement made on this day.
70 NISQUALLY RIVER BASIN

Chop Creek near Eatonville, Wash.

Location. Lat 46°52'50", long 122°16'45", in SE£ sec. 10, T. 16 N., R. 4 E., on left bank 

400 ft downstream from Lynch Creek, 600 ft downstream from outlet of Ohop Lake, and 

1 mile northwest of Eatonville.

Drainage area. 35.5 sq mi.

Records available. June 1927 to September 1932, September 1941 to September 1956.

Gage. Water-stage recorder and concrete control. Datum of gage is 519.8 ft above mean 

sea level (stadia traverse). June 1, 1927, to Sept. 30, 1932, water-stage recorder at 

same site at datum 2.79 ft higher. Sept. 6, 1941, to Mar. 17, 1942, staff gage at 

present site and datum.

Average discharge. 20 years, 66.8 cfs (48,360 acre-ft per year).

Extremes. Maximum discharge during year, 824 cfs Dec. 12 (gage height, 4.29 ft); minimum, 

7.5 cfs Aug. 12 (gage height, 1.64 ft).

1927-32, 1941-56: Maximum discharge, 1,740 cfs Dec. 9, 1953; maximum gage height, 

5.97 ft Dec. 11, 1946; minimum, 2.3 cfs Aug. 22, 23, 1944; minimum gage height observed, 1.12 ft Sept. 26, 1947.

Remarks. Records good except those below 6 cfs, which are fair. Possible small diversions for domestic use. Natural regulation In Ohop Lake.

Revisions (water years).--WSP 1246: Drainage area. WSP 1286: 1946.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

'In cubic feet per second) 

(Shifting-control method used Dec. 12-22)

1.6

1.7

1.8

1.9 

2.1

5.9

10

16.5

24

44

147

225

400

720

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Of sm

In.

Ac-ft

Oct.

19.5

18

19

58

57

43

38

45

148

214

154

119

92

76

67

58

49

46

40

36

31

29

26

28

106

149

145

140

186

228 

*22?

2,686.5

86.7

2.44

2.81

5,330

Nov.

200

200

211

194

184

154

132

117

107

138

119

101

87

73

64

61

57

64

193

166

159

147

136

142

290

494

561

380

318

290

5,539

185

5.21

5.80

10,990

Dec.

283

266

240

194

174

164

176

*184

197

166

421

705

348

318

249

222

203

189

187

322

*396

432

376

308

258

237

, 222

203

189

176

166

8,271

267

7.52

8.66

16,410

Jan.

159

154

189

205

228

280

280

234

205

187

171

164

157

149

205

208

189

179

*169

149

140

132

166

157

143

132

119

111

103

92

82

5,238

169

4.76

5.49

10,390

Feb.

76

73

68

6B

74

81

91

94

89

84

85

161

140

121

98

87

84

79

74

77

84

87

82

77

76

79

81

121

136

2,627

90.6

2.55

2.75

5,210

Mar.

136

217

243

200

164

138

129

*132

119

105

92

87

39

91

92

96

105

125

140

136

171

189

269

294

572

336

249

203

194

181

171

5,265

170

4.79

5.52

10,440

Apr.

154

136

121

125

121

111

109

109

100

101

103

98

98

98

92

84

76

74

74

79

82

76

*65

57

54

53

50 53

54

50

2,657

88.6

2.50

2.78

5,270

May

48

44

42

42

48

46

46

42

40

42

42

42

40

36

35

32

*31

30

28

26

26

29

30

26

25

25

26

22

21

20

19 5

1,051.5

33.9

0.955

1.10

2,090

June

18.5

18.5

20

25

27

33

33

29

27

43

61

46

39

42

67

81

76

61

112

W

89

73

60

51

44

38

34

*30

27

25

1,439.0

48.0

1.35

1.51

2,850

July

23

22

22

21

22

26

25

23

22

21

19.5

18

18

17

16.5

15

14.5

14

14

13

13

12.5

12

11.5

10

10

9.7

9.2

9.2

9.2

8.8

501.6

16.2

0.456

0.53

995

Aug.

7.9

9.2

12.5

12.5

12

9.7

8.3

*8.3

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

8.3

7.9

7.9

7.9

7.9

7.9

7.9

7.9

11

31

24

20

18

16

14.5

341.7

11.0

0.310

0.36

678

Sept.

13

11.5

12

11.5

10.5

10

9.7

9.7

9.7

11.5

19.5

18

16.5

*15

14.5

13

12.5

12

12

11.5

11.5

11.5

11.5

10.5

10.5

12.5

17

16.5

18.5

25

398.6

13.3

0.375

0.42

791

Calendar year 1955 : Max 705 Mln 4.8 Mean 95.9 Cfsm 2.70 In. 36.68 Ac-ft 69,460

Water year 1955-56 : Max 705 Mln 7.9 ' Mean 98.4 Cfsm 2.77 In. 37.73 Ac-ft 71,44O

Nov. 27 (2 a.m., 3:3O 

:20 p.m.)

Peak discharge (base. 27O cfs). --Oct. 10 (12:3O a.m.) 3O8 cfs (3.26 ft) 

a.m.) 645 cfs (4.02 ft); Dec. 12 (12:05 a.m.) 824 cfs (4.29 ft): Dec. 21 .. 

(3.88 ft); Jan. 6 (6 p.m.) 311 cfs (3.22 ft); Mar. 3 (3:30 a.m.) 276 cfs (3.16 ft); Mar. 25 

(5:30 p.m.) 404 cfs (3.51 ft).

* Discharge measurement made on this day.
NISQUALLY RIVER BASIN 71

Nlsqually River near McKenna, Wash.

Location. Lat 46-51'20", long 122°27'10", In SE£ sec. 20, T. 16 N., R. 3 E., on right 

bank 800 ft downstream from Elbow Creek, three-quarters of a mile upstream from Tanwax 

Creek, and 7.4 miles southeast of McKenna.

Drainage area. 445 sq mi.

Records available.--August 1941 to September 1956.

Gage. Water-stage recorder. Datum of gage Is 373.6 ft above mean sea level (stadia 

traverse). Prior to Sept. 30, 1941, staff gage at same site and datum.

Average discharge. 15 years, 1,789 cfs (1,295,000 acre-ft per year).

Extremes. Maximum discharge during year, 20,800 cfs Dec. 12 (gage height, 12.06 ft); minimum, 480 cfs Sept. 2 (gage height, 3.42 ft); minimum daily, 520 cfs Aug. 12.

1941-56: Maximum discharge, that of Dec. 12, 1955; minimum, 85 cfs Oct. 19, 1945 

(gage height, 2.57 ft); minimum daily, 176 cfs Jan. 30, 1945.

Remarks.--Records excellent. No diversion. Yelm Irrigation District Canal, abandoned in 

1950, formerly diverted water 3.6 miles above station. Major portion of flow regulated 

by Alder Reservoir and city of Tacoma powerplant at La Grande.

Revisions (water years). WSF 1286: 1947.

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

In cubic feet per second)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

4.7 

5.0 

5.5 

6.0 

7.0 

8.5 

10.0

1,180

1,440

1,950

2,590

4,350

7,850

12,300

3.5 520

4.0 800

4.5 1,170

5.0 1,620

5.5 2,160

6.0

7.0

8.5

10.0

12.0

2,800

4,450

7,850

12,300

20,500

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

Day

1

2

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

1,510

1,450

1,560

1,820

1,980

1,820

1,680

1,570

2,010

3,220

2,720 

2,260

2,180

2,100

1,680

1,460

1,700

1,700

1,620

1,690

1,610

1,430

1.250

1,690

2,590

3,060

2,630

2,470

2,860

6.560

5,710

69,390

2,238

137,600

Nov.

*3,830

3,480

6,820

9,520

8,920

5,540

3,950

2,620

2,460

4,770

5,730 

5,540

4,040

2,250

2,210

2,210

2,180

1.970

2,880

2,390

2,410

2,320

2,300

2,140

5,320

8,460

11.600

8,160

5,700

5,870

137,590

4,586

272,900

Dec.

5,720

4,210

2,870

2,530

2,660

2,440

2,510

2,640

2,530

2,280

6,90O 

17,000

*7,560

5,290

4,380

2,990

2,800

2,660

2,990

7,510

9,620

12,000

10,700

7,560

4,800

3,670

3,320

3,020

3,150

2,550

2,230

153,090

4,938

303,600

Jan.

1,400

1,570

3,670

6,730

6.950

5,490

5,170

2,750

2,630

2,550

2,350 

1,950

2,100

2,170

2,280

4,730

5,790

4,240

2,850

2,960

2,860

2,810

*3,980

2,830

2,460

2,480

2,420

2,300

2,200

2,150

2,290

99,110

3,197

196,600

Feb.

2,230

2,270

2,210

2,140

2,070

2,180

2,180

2,260

2,210

2,120

1.800 

27040

2,200

2,230

2,190

2,330

2,200

1,860

1,890

1,960

2,110

2,020

2,110

2,090

1,990

1,970

2,010

2,400

2.440

61,710

2,128

122,400

Mar.

2,290

2,620

2,670

2,4OO

2,390

2,350

2,290

2,390

2,330

2,160

1,970 

~2,090

1.910

2,030

2,070

*2,110

2,180

2,260

2,450

2,290

2,600

3,020

3,800

3,750

5.840

3,710

5,110

2,740

2,810

2,880

2,710

80,220

2,588

159,100

Apr.

2,450

2,390

2,420

2,410

2,500

2,410

2,430

2,500

Z,570

2,410

2,400 

2,410

2,500

2,670

4.460

4,070

2,780

*2.140

2,210

2,560

2,790

2,740

2,650

2,690

2,620

2,620

2,620

2,570

2,650

2,560

78,600

2,620

155,900

May

2,080

2,140

2,110

2,140

1,920

1,750

2,040

2,060

2,560

2,6OO

2,570 

2,500

2,480

1,800

1.750

1,880

2,030

2,960

4,680

4,520

4.740

3,970

3,440

5,420

2,710

2,010

2,110

*2,080

2,170

2,040

2,240

79,480

2,564

157,600

June

3,180

5.740

5,420

2,750

2,180

2,240

1,890

2,160

2,190

2,250

2,290 

2,270

2,250

2,250

2,490

2,490

2,540

2,450

2,740

2,690

2,490

2,580

2,500

2,250

1,750

1,510

1,260

1.210

1,560

1,550

68,000

2,267

134,900

July

1,420

1,400

*1,460

1,410

1,410

1,450

1,740

1,740

1,480

1,760

2.590 

1,710

1,310

2,010

1,850

1,590

1,180

1,110

950

2,140

2,530

1,520

788

1,070

1,310

1,160

1,220

928

657

1,160

1,250

44,665

1,441

88,590

Aug.

1,260

1.550

1,440

810

555

892

605

570

528

*677

526 

520 '644"

1,120

1,400

1,360

1,550

1,100

875

805

779

792

825

732

708

892

880

861

846

734

CAA O**

27,478

886

54,500

Sept.

675

602

540

794

1,030

946

1,270

794

792

1,250

1,120 

1,180

1,220

1,010

796

1,220

1,220

1,250

1,710

2.200

1,020

680

555

854

802

858

958

*998

994

905

50,183

1,006

59,870

Calendar year 1955: Max 17,000 Min 526 Mean 2,414 Ac-ft 1,748,000

Water year 1955-56: Max 17,000 Min 520 Mean 2,540 Ac-ft 1,844,000

* Discharge measurement made on this day.

467240 O -58 -r
72 NISQUALLY RIVER BASIN

Nisqually River at McKenna, Wash.

Location. Lat 46°56'00", long 122"33'35", in SE£NW£ sec. 28, T. 17 N., R. 2 E., on left 

bank 100 ft downstream from highway bridge at McKenna and 9.0 miles downstream from 

Tanwax Creek.

Drainage area. 517 sq mi.

Records available.--October 1947 to September 1956.

Gage_.--Water-stage recorder. Altitude of gage is 275 ft (from topographic map).

Extremes. Maximum discharge during year, 20,200 cfs Dec. 12 (gage height, 12.38 ft), from 

rating curve extended above 9,900 cfs; minimum, 51 cfs Sept. 3, 4 (gage height, 1.00ft),

1947-56: Maximum discharge, that of Dec. 12, 1955; minimum, 42 cfs Sept. 19. 1948 

. (gage height, 0.98 ft).

Remarks.--Records good. Major portion of flow regulated by Alder Reservoir and city of 

Tacoma powerplants at Alder Dam and at La Grande. Centralia power canal diverts 

4.4 miles above station; water is returned to river at powerplant 4.5 miles below station. Periodic measurements of flow in the power canal made at sites half a mile, threequarters of a mile, and l£ miles, below head, are given in the following table:

Stream

Centralia

power 

canal.

Do.. .....

Do... ....

Tributary to

Diverts from

left side 

Nisqually

River.

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

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

Location

NW-t sec. 1, T. 16 N. , R. 2 E. ,

f mile below head and 3j miles 

southeast of McKenna.

SWi sec. 36, T. 16 N. , R. 2 E. ,

5 mile below head and 3j miles

southeast of McKenna.

SW£ sec. 35, T. 16 N. , R. 2 E. ,

li miles below head and 2£

miles southeast of McKenna.

Revisions. WSP 1246: Drainage area.

Drainage 

area 

(sq mi)

_

-

_

Measured

previously 

(water 

years)

1945-55

Date

Nov. 8

Dec. 21 

Jan. 23

Mar. 27

Apr. 18

Sept. 28

May 29

July 3

Aug. 10

Discharge 

(cfs)

538

594 

595

608

602

628

631

608

66.3

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

discharge, in cubic feet per second)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

2 - 7 730 1.1 64 4.0 2,050

3 -° 970 1.3 96 4.5 2,670

3.5 1,450 1.5 140 5.0 3,350

4.0 2,000 1.7 201 6.0 4,880

5 -° 3,270 2.0 355 8.0 8,570

6.0 4,850 2.5 640 10.0 15,400

7.5 7,550 3.0 1,050 12.0 19,000

9.0 10,900 5.5 1,500

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

978

942

1,040

1,290

1,410

1,280

1,200

1,070

1,410

2,420

2,170

1,710

1,660

1,560

1,510

1,090

1,150

1,220

1,160

1,140

1,160

974

796

1,120

1,910

2,540

2,150

Nov.

*5,420

2,850

5,720

8,590

8,250

5,100

5,750

2,270

2,070

3,600

5,100

4,880

3,850

1,870

1,800

1,780

1,810

1,550

a, 400

2,030

2,000

1,920

1,870

1,780

4,540

7,610

10,700

1,910' 8.570

2,220

5,540

5,160

52,490

1,695

104,100

5,590

5,510

122,120

4,071

242,200

Dec.

5,410

4,100

2,710

2,340

2,400

2,170

2,250

2,350

2,340

1,940

5,380

17,800

*7,980

4,610

4,070

2,560

2,340

2,160

2,290

6,060

9,120

12,000

11,700

7,810

4,760

3,580

3,100

2,750

2,850

2,240

2,010

144,940

4,675

287,500

Jan.

1,140

1.110

2,870

6,010

7,180

5,240

5,090

2,800

2,400

2,280

2,170

1,650

1,820

1,870

1,980

4,050

5,580

4,090

2,550

*2,650

2,570

2,510

3,630

2,660

2,220

2,220

2,140

2,010

1,930

1,820

1,950

89,970

2,902

178,500

Feb.

1,880

1,890

1,840

1,760

1,700

1,790

1,810

1,890

1,820

1,720

1,470

1,640

1,780

1,840

1,780

1,890

1,800

1.420

1,520

1,510

1,700

1,650

1,710

1,690

1,600

1,560

1,590

1,920

2,000

50,170

1,730

99,510

Mar.

1,890

2,210

2,250

2,080

2,050

1,970

1,900

2,010

1,940

1,780

1,590

1,700

1,470

1,590

1,620

*1,670

1,750

1,810

1,970

1,860

2,080

2,500

5,240

5,330

3,380

5.410

2,780

2,400

2,440

2,480

2,370

67,480

2,177

133,800

Apr.

2,090

1,990

2,000

1,950

2,040

1,960

1,980

1,890

1,860

1,920

1,910

1,900

1,980

1,970

5,720

5,570

2,450

*1,730

1,720

1,860

2,260

2,230

2,090

2,130

2,070

2,080

2,060

2,060

2,100

2,020

63,570

2,119

126,100

May

1,580

1,640

1,590

1,640

1,440

1,250

1,530

1,550

1,990

2,050

2,030

1,970

1,950

1,520

1,220

1,580

1,480

2,110

5,990

5,750

4,090

5,520

2,820

2,820

2,550

1,500

1,518

*1,520

1,600

1,450

1,620

62,020

2,001

123,000

June

2,580

5,090

2,810

2,170

1,590

1,650

1,560

1,540

1,580

1,650

1,740

1,720

1,680

1,650

1,890

1,920

1,980

1,890

2,110

2,110

1,910

1,790

1,710

1,620

1,260

742

752

707

792

777

50,550

1,684

100,200

July

886

870

*926

886

910

926

1,090

1,240

908

982

2,040

1,000

847

1,150

1,280

760

594

526

550

1,290

1,550

990

292

596

646

557

606

587

186

450

646

26,147

843

51,860

1956

Aug".

670

876

897

356

118

402

205

546

518

*450

98

88

122

414

810

725

887

565

576

286

252

254

271

258

155

524

518

296

509

250

156

12,150

591

24,060

Sept.

115

128

75

167

450

424

656

281

272

585

587

628

648

436

286

541

693

584

1,050

1.550

585

216

90

264

271

*500

592

450

464

436

15,584

455

26,940

Calendar year 1955: Max 17,800 

Water year 1955-56: Max 17,800 Min 75

Mean 2,007 

Mean 2,063

Ac-ft 1,453,000 

Ac-ft 1,498,000

Discharge measurement made on this day.
CHAMBERS CREEK BASIN 

Chambers Creek below Leach Creek, near Stellacoom, Wash.

73

Location. Lat 47°11'55", long 122°31'40", in NE^NE^ sec. 27, T. 20 N., R. 2 E., on left 

bank a quarter of a mile downstream from Leach Creek, 1| miles downstream from outlet 

of Steilacoom Lake, and 4 miles northeast of Steilacoom.

Drainage area. 104 sq mi.

Records available. December 1937 to September 1940, July 1943 to September 1956. 

Gage. Water-stage recorder. Altitude of gage is 100 ft (from topographic map). 

Average discharge. 15 years (1938-40, 1943-56), 115 cfs (83,260 acre-ft per year).

Extremes. Maximum discharge during year, 792 cfs Jan. 5 (gage height, 3.58 ft); minimum, 

J6 cfs Sept. 8; minimum gage height, 1.19 ft Oct. 1.

1937-40, 1943-56: Maximum discharge, that of Jan. 5, 1956; minimum, 31 cfs Oct. 9- 

12, 1952 (gage height, 0.71 ft).

Remarks. Records excellent except those for periods of no gage-height record or shifting 

control, which are fair. Some regulation by gates at outlet of Steilacoom Lake. Some 

diversions from tributaries for domestic use and for use of Army air base above 

station.

Rating tables, water year 1955-56, except period of shifting control (gage 

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

Oct. 1 to Jan. 14 Jan. 15 to Sept. 30

1.2 

1.4 

1.6 

2.0 

2.5 

3.2

43

65

135

252

410

650

1.3 

1.6 

2.0 

2.5 

3.0 

3.5

150

280

440

615

Discharge, In cubic feet per second, water year October 1955"to September 195G

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

55

59

53

55

55

55

57

59

70

6T

57

57

57

55

53

53

53

53

53

53

53

53

51

*63

70

59

57

57

70

61

59

1,776

57.3

3,520

Nov.

59

81

76

74

67

67

*67

70

67

67

67

65

65

65

65

65

65

78

99

85

83

81

87

99

122

138

149

149

*163

186

2,671

89.0

5,300

Dec.

204

210

210

207

213

231

234

234

237

240

298

311

343

349

372

359

333

314

302

375

420

474

*499

514

508

511

531

528

497

511

508

11,077

357

21,970

Jan.

511

535

590

587

640

562

562

608

580

548

562

556

566

573

573

528

454

444

444

412

444

444

422

440

436

430

*408

405

398

*370

352

15,384

496

30,510

Feb.

557

325

313

301

295

286

280

274

265

256

248

245

238

230

225

220

218

212

208

208

412

208

208

208

208

205

200

198

195

7,026

242

13,940

Mar.

198

202

218

230

238

235

245

248

*253

256

250

245

240

235

230

225

220

218

215

220

225

230

240

250

250

240

230

230

230

240

240

7,226

233

14,330

Apr.

~S55 240

230

225

225

220

220

215

210

205

205

200

200

195

190

190

185

185

180

180

175

175

*172

170

168

168

168

168

165

162

5,826

194

11,560

Calendar year 1955: Max 531 Mln 39 Mean 120

May

160

14?

135

140

145

145

145

145

135

130

125

119

115

119

119

119

115

103

103

117

130

121

117

113

111

113

109

107

107

107 

*105

3,816

123

7,570

June

105

105

107

105

103

103

105

107

111

117

111

109

107

109

109

107

105

103

105

103

101

99

99

97

97

97

95

93

91

89

3,094

103

6,140

July

87

85

82

82

85

*82

82

79

79

78

76

76

76

74

74

74

73

72

67

66

66

66

64

60

58

61

62

62

62

62 

62

2,234

72.1

4,430

Aug.

62

67

68

67

66

64

64

62

61

61

61

61

60

60

*58

58

56

56

56

56

55

54

54

54

54

55

54

52

52

 52 

52

1,812

58.5

3,590

Sept.

42

42

42

42

42

41

41

40

47

50

52

5T

51

50

50

50

48

48

48

48

47

46

46

46

48

50

48

47

48

50

1,401

46.7

2,780

Ac-ft 86,890

Water year 1955-56: Max 640 Mln 40 Mean 173 Ac-ft 125,600

* Discharge measurement made on this day.

Note. No gage-height record Mar. 19 to Apr. 22; discharge estimated on basis of records for 

stations on nearby streams. Shifting-control method used Jan. 6-14.
74 PUYALLUP RIVER BASIN

Kapowsin Creek near Kapowsin, Wash.

Location. Lat 46°59'30", long 122°11'30", in NE£ sec. 5, T. 17 N., R. 5 E., on right bank 

half a mile downstream from Kapowsin Lake and Ij miles east of Kapowsin.

Drainage area.--23 sq mi, approximately.

Records available.--June 1927 to October 1932, October 1941 to September 1956.

Gage. Water-stage recorder and log control. Datum of gage is 561 ft above mean sea level 

(from stadia traverse). Prior to Oct. 8, 1932, water-stage recorder at same site at 

datum 3.23 ft higher. Oct. 1, 1941, to Mar. 31, 1942, staff gage at present site and 

datum.

Average discharge. 20 years, 49.7 cfs (35,980 acre-ft per year).

Extremes. Maximum discharge during year, 610 cfs Dec. 12 (gage height, 5.37 ft); minimum, 1.9 cfs Aug. 17-19 (gage height, 1.77 ft).

1927-32, 1941-56: Maximum discharge, that of Dec. 12, 1955; maximum gage height, 

5.83 ft Dec. 12, 1946 (backwater from debris); minimum discharge, 0.9 cfs Aug. 23-27, 

1951 (gage height, 1.72 ft).

Remarks.--Records good. Natural regulation in Kapowsin Lake. No diversion.

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

discharge, In cubic feet per second)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

2.0

2.1 

2.3

6.7

11

24

Note. Same as 

following table 

above 2.3 ft.

1.75

1.8

1.9

2.0

2.1 

2.3 

2.5

1.9

2.8

5.2

8.4

12.5

24

42

106

191

291

400

518

642

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

Day

1

2

3

4

5

6

7

8

9

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.

10.5

10.5

12

24

36

35

33

36

78

162

133

96

74

62

52

46

42

38

36

36

35

33

32

36

63

130

127

a!30

a!60

a!90

*a!80

2,168.0

69.9

3.04

3.51

4,300

Nov.

150

143

162

143

130

116

103

98

91

88

83

74

68

59

54

51

49

54

124

130

109

96

90

98

2OO

302

366 302"

246

214

3,993

133

5.78

6.46

7,920

Dec.

224

214

191

157

13Z

127

133

*125

132

128

262

580

420

297

214

175

148

128

124

196

264

299

278

224

184

166

166

138

119

104

94.

6,143

198

8.61

9.93

12 , 180

Jan.

88

88

122

189

Z16

234

248

2oo

164

141

124

112

109

104

157

173

153

148

*141

130

120

112

130

133

116

103

91

87

84

80

69

4,166

134

5.83

6.74

8,260

Feb.

63

59

57

54

54

56

56

57

57

54

53

76

94

85

73

65

68

67

62

59

60

62

60

59

59

60

60

60

73

1,822

62.8

2.73

2.95

3,610

Mar.

81

146

187

168

136

114

104

*109

111

94

84

77

74

72

69

67

64

67

72

80

97

124

175

216

260

274 214~

177

184

171

160

4,028

130

5.65

6.51

7,990

Apr.

143

Ttt

109

103

98

88

88

83

76

70

*67

63

60

57

54

53

51

49

46

44

43

40

38

36

34

31

30

31

31

31

1,871

62.4

2.71

3.03

3,710

May

30

30

29

29

29

30

29

29

28

29

29

28

28

27

26

26

*24

23

23

22

21

20

20

19.5

18.5

18.5

18.5

18

16.5

16.5

ii

751.0

24.2

1.05

1.21

1,490

June

16

16

16.5

17

17.5

17.5

18.5

18.5

18.5

21

23

23

23

26

30

31

32

32

40

48

47

44

40

36

33

31

30

*28

26

26

826.0

27.5

1.20

1.34

1,640

July

26

25

25

23

23

22

21

20

18.5

18

17

16.5

16

15

14.5

13.5

13

12.5

12

11.5

11.5

11

9.9

9.1

8.4

7.7

7.1

5.8

5.2

5 .2

4.7

448.6

14.5

0.630

0.73

890

Aug.

4.4

*4.7

4.4

4.7

4.9

4.9

4.2

4.2

3.4

2.8

3.0

2.8

2.6

2.4

2.1

2.1

2.1

1.9

27T

2.4

2.2

2.4

2.6

2.6

3.4

4.9

4.7

4.2

3.4 

3.4

3.2

103.1

3.33

0.145

0.17

204

Sept.

3.0

2.8

2.6

2.4

27J

2.6

2.8

3.0

.0

.4

.4

.8

.5

* .7

.7

.4

.2

.9

.2

.4

.4

.2

.9

.9

.4

.6

.7

.4

8.8 

9 5

134.0

4.47

0.194

0.22

266

Calendar year 1955 : Max 580 Mln 5.8 Mean 71.8 Cfsm 3.12 In. 42.37 Ac-ft 51,970

Water year 1955-56 : Max 580 Mln 1.9 Mean 72.3 Cfsm 3.14 In. 42.80 Ac-ft 52,460

Peak discharge (base. 160 efs). Oct. 10 (12 m. to 2:30 p.m.) 171 cfs (3.37 ft); probably Oct. 30 

(time unknown) 206 cfs (3.56 ft); Nov. 3 (8 a.m.) 175 cfs (3.39 ft); Nov. 27 (11 a.m.) 377 cfs 

(4.38 ft); Dec. 12 (6 a.m.) 610 cfs (5.37 ft); Dec. 22 (9:30 a.m., 3 p.m.) 306 cfs (4.07 ft); 

Jan. 7 (3 a.m.) 26O cfs (3.85 ft); Jan. 15 (8 to 12 p.m.) 180 cfs (3.44 ft); Mar. 3 (1 p.m.) 195 cfs 

(3.52 ft); Mar. 26 (1 a.m.) 293 cfs (4.01 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range In stage and records for 

stations on nearby streams.
PUYALHJP RIVER BASIN 75

Puyallup River near Ortlng, Wash.

Location. Lat 47°02<20", long 122°12'25", In SW^SW^ sec. 17, T. 18 N., R. 5 E., on right 

 bank 600 ft downstream from highway bridge, 4 miles south of Orting, and 9 miles upstream from Carbon River.

Drainage area.--172 sq mi.

Records available.--September 1931 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 357.5 ft above mean sea level (unadjusted). 

Prior to Feb. 6, 1946, at site 600 ft upstream at datum 3.93 ft higher. Supplementary 

water-stage recorder 200 ft upstream at datum 2.1 ft higher than present gage datum 

used at times during periods in 1942-46.

Average discharge.--25 years, 704 cfs (509,700 acre-ft per year).

Extremes.--Maximum discharge during year, 12,100 cfs Dec. 11 (gage height, 9.12 ft), from 

rating curve extended above 1,700 cfs; minimum, 195 cfs Oct. 2; minimum gage height, 

3.11 ft Sept. 22-24; minimum daily, 243 cfs Sept. 23.

1931-56: Maximum discharge, 12,800 cfs Dec. 10, 1933 (gage height, 11.87 ft, from 

recorded range in stage), from rating curve extended above 3,300 cfs; minimum, 25 cfs 

Nov. 28, 1952 (gage height, 2.16 ft); minimum daily, 59 cfs Nov. 29, 1952.

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

Water diverted for Electron powerplant of Puget Sound Power & Light Co., returned to 

river above gage. Some regulation by Electron powerplant.

Revisions (water years). WSP 932: 1937-39. WSP 962: 1934. WSP 1246: Drainage area.

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

in cubic feet per second)

(Shifting-control method used Oct. 1-6, Nov. 25 to Dec. 11, 

May 24 to Sept. 30)

Oct. 1 to Dec. 10 Dec. 11 to Sept. 30

3.9 272

4.4 436

5.0 740

5.5 1,130

6.0 1,670

7.0 3,400

3.1 232

3.5 400

4.0 695

4.5 1,110

5.0 1,700

6.0 3,320

7.2 6,010

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

Day

1

2

3

4

5

6

7

8

9

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.

297

 ?94 289

456

496

459

410

518

1,640

2,090

1,270

1,050 

920

830

760

696

654

600

550 

500

460

430 

400

370

*2,400

1,980

1,310

1,380

2.660

2,020

1,270

29,459

950

5.52

6.37

58,430

Nov.

1,050

1,350

1,790

*2,730

1,830

1,400

1,200

1,170

1,470

2,800

1,420

1,200 

1,000

900

850

700

560

450

1,180 

874

760

702

677

721

1,470

2,140

2.910

1,750

1,350

1,330

39,734

1,324

7.70

8.59

78,810

Dec .

1,340

1,170

1,000

881

874

880

*881

866

976

976

5.760

4,680 

1,840

1,360

1,200

1,050

950

1,000

1,150 

1,370

2,080

3,710 

2,420

1,670

1,400

1,250

1,250

950

800

720

660

47,114

1,520

8.84

10.19

93,450

Jan.

660

680

1,000

1,400

2.000

1,800

1,750

1,400

1,100

900

850

810 

800

800

1,200

1,700

1,400

*1,220

1,060 

983

888

818 

929

825

737

669

617

586

555

*508

452

31,097

1,003

5.83

6.72

61,680

Feb.

452

463

452

442

463

458

474

463

436

431

480

702 

59?

520

447

474

458

452

431 

426

426

426 

426

426

442

431

431

514

555

13,593

469

2.73

2.94

26,960

Mar.

709

1,150

1,090

802

649

549

*555

598

538

480

458

426

43T

426

426

426

452

508

573 

598

765

1,010 

1,530

1,610

1.900

1,700

*1,200

1,000

1,110

1,010

938

25,617

826

4.80

5.54

50,810

Apr.

818

716

649

695

675

586

62?

617

592

636

*744

765 

840

974

983

880

765

702

802 

1,080

1,440

1.470 

*1,180

956

848

840

825

802

758

669

24,936

831

4.83

5.39

49,460

May

604

592

573

592

617

636

688

772

864

992

880

795 

688

623

655

888

*1,390

1,940

2.200 

2,020

1,430

1,240 

1,390

1,220

1,090

1,110

1,050

856

912

1,250

*1,570

32,127

1,036

6.02

6.95

63,720

June

1,430

1,180

1,140

1,110

947

856

818

864

1,210

1,530

1,290

974 

896

974

1,320

1,230

1,360

1,240

2.140 

1,850

1,310

1,140 

1,060

904

810

780

*983

1,030

904

788

34,068

1,136

6.60

7.37

67,570

July

744

737

716

709

795

*947

832

904

1,050

1,170

1,220

1.250 

1,090

904

795

772

765

840

965 

1,110

1,060

912 

856

832

788

669

610

561

532

502

491

26,114

842

4.90

5.65

51,800

Aug.

463

*421

410

381

390

410

421

431

452

452

452

491 

*567

662

655

538

474

497

567 

610

636

636 

636

561

573

649

514

442

532

497

458

15,878

512

2.98

3.43

31,490

Sept.

491

410

381

371

366

381

447

436

410

426

491

381 

386

362

317

334

362

390

405

371

308

268 

243

*300

352

426

410

362

436

545

11,566

386

2.24

2.50

22,940

Calendar year 1955 : Max 5,760 Min 251 Mean 847 Cfsm 4.92 In. 66.82 Ac-ft 613,000

Water year 1955-56 : Max 5,760 Min 243 Mean 905 Cfsm 5.26 In. 71.64 Ac-ft 657,100

cfs (7.66 ft); Dec" 11 (9 p.m.) 12,100 cfs (9.12 ft).

* Discharge measurement made on this day.

Note.--No gage-height record Oct. 18-25, Nov. 12-18, Dec. 6, 15-19, Dec. 25 to Jan. 17; discharge 

estimated on basis of recorded range in stage and records for nearby stations.
76 HJYALLUP RIVER BASIN

Carbon River near Fairfax, Wash.

Location. Lat 47°01'40", long 122°01'50", in SWisW^ sec. 22, T. 18 N., R. 6 E., on^eft 

 bank l£ miles upstream from highway bridge, lir miles northwest of Fairfax, and 2^ miles 

downstream from Evans Creek.

Drainage area.--78.9 sq mi.

Records available.--November 1910 to July 1912, March 1929 to September 1956. Published 

as "at Fairfax" 1910-12.

Gage.--Water-stage recorder. Datum of gage is 1,212.6 ft above mean sea level (riverprofile survey). Prior to July 13, 1912, staff gage at railroad crossing 1.7 miles 

upstream at different datum.

Average discharge.--27 years (1929-56), 417 efs (301,900 acre-ft per year).

Extremes. Maximum discharge during year, 6,320 cfs Dec. 11 (gage height, 7.25 ft); minimum, 136 cfs Feb. 23-27 (gage height, 1.03 ft).

1910-12, 1929-56: Maximum discharge, 11,000 cfs Dec. 9, 1933 (gage height, 10.2 ft), 

from rating curve extended above 4,200 cfs; minimum, 36 cfs Nov. 28, 29, 1952; minimum 

gage height recorded, 0.75 ft Nov. 20, 1944.

Remarks.--Records good. No regulation or diversion above station.

Revisions

1.

1.

1.

2.

2.

(water years) .--WSP 1246:

,5

,6

,9

,2

.6

Rating ti

Oct. 1 to

157

209

502

424

640

sbles,

Dec.

3.0

3.5

4.0

4.5

water year

in

11

930

1,380

1,910

2,530

Drainage area. WSP 1286:

1955-56 (gage

cubic

1.0

1.3

1.6

2.0

2.5

height, in feet,

1930, 1931-32 (M), 1£

and discharge

feet per second)

Dec. 11

130

196

280

430

680

to May

3.0

3.5

4.0

5.O

6.0

31

1,010

1,420

1,920

3,100

4,450

June 1 to

1.6

1.8

2.1

2.5

3.0

3.5

Sept. 30

120

175

300

550

950

1,410

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

Day

1

2

3

4

5

6

7

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.

155

T56" 148

344

355

240

223

274

1,010

1,320

754

698

574

448

376

313

282

262

246 

231

2O9

193 

181

298

1,370

*1,070

672

946

2.290

1,800

1,050

18,482

596

7.55

8.71

36,660

Nov.

761

1,180

2,030

1,920

1,380

1,080

874

790

1,110

2,260

1,O8O

740

620

500

410

380

339

354

684 

503

448

384 

368

398

775

1,110

1,720

1,370

1,040

97O

27,608

920

11.7

13.01

54,760

Dec.

89O

705

563

477

429

*415

364

351

393

384

5,280

2,790

1,120

752

636

565

490

430

413 

595

776

1,3OO 

947

716

57O

515

457

392

353

331

510

22,709

733

9.29

10.70

45,040

Jan.

296

290

416

674

615

535

485

444

396

361

335

310

300

293

680

722

*565

575

560 

565

475

448 

530

470

413

361

331

306

287

265

250

13,553

437

5.54

6.39

26,880

Feb.

244

242

240

230

220

212

2O9

209

201

196

206

239

196

182

154

157

163

159

154 

154

150

148 

140

136

138

136

136

150

154

5,255

181

2.29

2.48

10,420

Mar.

231

283

259

217

191

174

*201

206

182

159

154

146

148

144

144

146

152

174

212 

217

277

331 

413

5OO

600

570

417

365

388

384

368

8,353

269

3.41

3.94

16,570

Apr.

345

327

310

300

296

280

271

265

256

*300

422

417

466

615

652

570

485

452

490 

740

1,000

1.050

621

674

615

625

625

595

505

434

15,183

506

6.41

7.16

30,120

May

401

380

372

372

384

409

475

585

680

740

658

575

470

434

470

*704

1,040

1,35O

1,570 

1,420

 1,040

961 

1,070

947

856

905

884

746

807

1,070

1,230

24,005

774

9.81

11.31

47,610

June

1,030

878

844

772

644

536

468

480

748

923

788

592

557

613

772

748

860

828

1,260 

1,190

860

764 

732

620

515

*578

772

812

716

606

22,506

750

9.51

10.61

44,640

July

529

508

522

515

613

756

636

684

788

869

836

933

923

740

644

636

592

636

772 

878

812

716 

636

628

571

494

444

390

360

342

*556

19,738

637

8.07

9.30

39,150

Aug.

306

*275

255

238

238

250

260

270

280

285

29O

3O6

354

414

452

356

285

290

350 

372

378

378 

390

342

354

378

285

238

270

300

265

9,644

311

3.94

4.55

19,130

Sept.

265

218

196

175

169

172

189

210

226

226

270

206

186

169

169

172

175

*189

196 

210

182

154 

142

154

186

270

275

255

394

529

6,529

218

2.76

3.08

12,950

Calendar year 1955: Max 3,280 Mln 112 Mean 524 Cfsm 6.64 In. 90.18 Ao-ft 379,600

Water year 1955-56: Max 3,280 Mln 136 Mean 529 Cfsm 6.70 In. 91.24 Ao-ft 383,900

Peak discharge (base, 1.800 cfs).--Oct. 10 

cfs (4.26 ft); Oct. 29 {4:50 p.m.) 4,O6O ofs 

Nov. 10 (2:45 a.m.) 3,370 ofs (5.10 ft); Nov. 

6,320 cfs (7.25 ft).

* Discharge measurement made on this day.

'2 a.m.) .. 1,810 , cfs (3.91 ft); Oct. 25

|5.55 ft)j Nov. 2 (12 p.m.) 2.62O cf 

27 (1:30 p.m.) 1,920 cfs (4.01 ft); Dec. 11 (11 p.m.)

4:40 p.m.) 2,220 

4.57 ft);
PUYALLUP RIVER BASIN 77 

South Prairie Creek at South Prairie, Wash.

Location. Lat 47°08'30", long 122°05'30", In NE^NWij sec. 18, T. 19 H., R. 6 E., on right 

bank 0.3 mile northeast of South Prairie and 5 miles upstream from mouth.

Drainage area.--78.6 sq ml.

Records available.--June 1949 to September 1956.

Gage.--Water-stage recorder. Altitude of gage Is 430 ft (from topographic map).

Average d1scharge.--7 years, 255 cfs (184,600 acre-ft per year).

Extremes. Maximum discharge during year, 6,850 cfs Dec. 11 (gage height, 9.78 ft), from 

rating curve extended above 3,000 cfs; minimum, 38 cfs Sept. 6-8 (gage height, 

1.75 ft), but may have been less during early part of period of no gage-height record 

In October.

1949-56: Maximum discharge, that of Dec. 11, 1955; minimum, 22 cfs Nov. 29, 1952 

(gage height, 1.25 ft).

Remarks. Records good except those for period of shifting control, which are fair, and 

those for periods of no gage-height record, which are poor. Small amount of diversion 

for domestic use. No regulation.

Revlslons.--WSP 1286: Drainage area.

Rating tables, water year 1955-56, except period of shifting control (gage height, 

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

Oct. 1 to Nov. 26 27 to Sept. 30

1.8 

2.1 

2.6 

3.O

132

228

335

3.5 

4.0 

4.5 

5.O 

5.5

505

725

985

1,280

1,640

2.5 

3.0 

3.5

33

54

80

153

275

435

4.O 

4.5 

5.O 

6.O 

7.1

655

93O

1,250

2,O4O

3,150

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 sm

In.

Ac-ft

Oct.

45

43

46

120 

22O

170

140

25O

550

730

48O

35O

28O

220

190

160

14O

130

120

110

105

95

90

150

740

600

*460

553

93O

958

C T o bio

9,793

316

4. 02

4.63

19,420

Nov.

445

679

974

785 

613

490

397

359

320

46O

341

270

233

198

16O

150

140

200

8OO

475

375

3O6

3OO

356

973

1,620

1.780

1,140

854

793

16,986

566

7.20

8.04

33,690

Dec.

876

722

524

418 

353

335

*372

326

515

467

5.100

3,O60

1,12O

727

574

499

439

382

39O

628

854

1,13O

1.O1O

744

592

52O

487

414

359

326

299

22,562

728

9.26

1O.68

44,750

Jan.

293

287

546

1.050 

894

722

665

556

467

404

372

347

368

350

761

732

569

*582

592

596

515

467

551

475

407

356

314

281

258

23O

2O5

15,192

49O

6.23

7.19

30,130

Feb.

193

183

181

171

176

169

162

158

147

145

172

278

220

190

155

167

158

149

145

142

147

138

136

140

155

162

167

183

195

______

4,884

168

2.14

2.31

9,69O

Mar.

298

578

487

39O 

320

268

*281

359

3O5

26O

23O

210

2OO

19O

183

181

ISs

220

293

302

412

538

771

954

1.050

93O

64O

511

587

542

491

13,149

424

5.39

6.22

26,080

Apr.

424

379

341

341 

338

302

296

293

281

*320

396

393

421

471

447

407

335

311

341

463

600

56O

421

335

293

287

278

278

278

255

10,865

362

4.61

5.14

21,550

May

215

202

193

20O 

232

235

281

284

296

326

272

258

225

21O

212

*281

407

483

499

42T

302

284

311

26O

218

238

278

208

210

287

323

8,651

279

3.55

4.O9

17,160

June

26O

222

215

220 

22O

26O

230

220

255

323

317

230

212

228

326

296

447

362

585

578

414

338

293

245

210

*200

218

208

174

169

8,475

282

3.59

4.01

16,810

July

134

138

136

124 

142

230

164

16O

169

155

14O

136

132

113

103

99

96

94

94

96

90

82

74

72

69

67

64

61

56

*FO" 55

*DO

3,403

HO

1.4O

1.61

6,750

Aug.

61

62

73

64 

58

55

52

51

5O

5O

5O

50

48

47

46

46

45

44

43

42

41

41

42

44

46

99

67

54

51

48

47

1,617

52.2

O.664

0.77

3,21O

Sept.

44

43

43

41 

59

59

39

4O

41

48

76

61

5O

47

46

44

*42

42

42

42

44

42

41

42

46

72

121

73

88

155

1,631

54.4

O.692

0.77

3,24O

Calendar year 1955: Max 3,100 Min 43 Mean 32O Cfsm 4.O7 In. 55.19 Ac-ft 231,300

Water year 1955-56: Max 3,1OO Min 39 Mean 32O Cfsm 4.O7 In. 55.46 Ac-ft 232,500

Peak discharge (base. 2.OOP cfs). Dec. 11 (9 p.m.) 6,85O cfs (9.78 ft). 

* Discharge measurement made on this day. 

Note. No gage-height record Oct. 1-27, Nov. 15-18; discharge estimated on basis of records for 

stations on nearby streams. Shifting-control method used May 15 to July 5.
78 PUYALLUP RIVER BASIN

Puyallup River at Alderton, Wash.

Location.--Lat 47°11'05", long 122°13'45", on line between sec. 25, T. 20 N., R. 4 E., and 

sec. 30, T. 20 N., R. 5 E., on right bank at downstream side of bridge on State Highway 

5E, 1 mile north of Alderton, 1 mile south of Surnner, and 2 miles upstream from Stuck 

River.

Drainage area.--438 sq mi.

Records available.--October 1914 to February 1927, October 1943 to September 1956.

Gage.--Water-stage recorder. Datum of gage is at mean sea level, datum of 1929. Prior 

to Feb. 2, 1927, staff or chain gages at practically same site at datum 49.77 ft higher 

prior to Aug. 5, 1918, and at datum 48.77 ft higher after that date. Oct. 1, 1943, to 

Sept. 30, 1955, at datum 0.23 ft lower.

Average discharge.--25 years (1914-26, 1943-56), 1,614 cfs (1,168,000 acre-ft per year).

Extremes.--Maximum discharge during year, 23,300 cfs Dec. 12 (elevation, 56.84 ft); minimum, 555 cfs Oct. 1-3 (elevation, 47.20 ft), but may have been less sometime during 

a period of doubtful gage-height record in September.

1914-27, 1943-56: Maximum discharge, that of Dec. 12, 1955; minimum daily, 150 cfs 

Nov. 29, Dec. 1, 1952.

Flood in 1906 reached a stage of 66.3 ft, from floodmarks (discharge not determined).

Remarks.--Records good except those for period July to September, which are fair. Minor 

diversions for farm and domestic use. Some regulation by Electron powerplant of Puget 

Sound Power & Light Co.

Revisions (water years.--WSP 870: Drainage area. WSP 1316: 1917(M), 1919-27(M). 

WSP 1396:1945(P).

Rating tables, water year 1955-56 (elevation , in feet, and 

discharge, in cubic feet per second) 

(Shifting-control method used Oct. 1-9)

Oct. 10 to Sept. 30

47.3

47.8

48.3

49.0

50.0

510

910

1,420

2,310

3,860

47.2

47.7

48.2

49.0

565

1,000

1,560

2,720

50.0

52.0

54.2

4,400

8,7OO

14,9OO

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

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

592

585

578

1,130

1,72O

1,170

982

1,190

3,500

5,460

3,200

2,590

2,240

1,870

1,620

1,460

1,340 

1,260

1,140

1,120

1.O6O

980

9OO

1,010

*3,780

4,470

2,940

3,060

5,200

5,880

'

67,917

2,191

5.00

5.77

134,700

Nov.

3,010

3,120

5,470

5,510

4,440

3,500

2,980

2,78O

2,670

5,510

3,650

2,740

2,200

1,870

1,690

1,540

1.450 

1,450

3,340

2,530

2,220

2,OOO

1,840

2,O50

3,650

5,650

6,580

5,19O

4,150

3,890

98,65O

3,288

7.51

8.38

195,700

Dec.

4,020

3,580

3,060

2,590

2,30O

2,280

*2,360

2,120

2,750

2,470

8.4OO

14,8OO

6,400

4,350

3,440

3,040

2,700 

2,400

2,460

3,680

4,920

7,090

5,630

4,170

3,340

3.O2O

2,900

2,50O

2.2OO

2,040 

1,910

118,920

3,836

8.76

10.10

235,900

Jan.

1,890

1,910

2,620

3,850

4,O2O

3,500

3,440

3.O2O

2,670

2,400

2,230

2,120

2,140

2,070

3,280

3,75O

3,180 

*2,900

2,830

2,850

2,610

2,460

2,58O

2,560

2,320

2,O8O

1,930

1,790

1,730

1,650 

1.540

79.92O

2,578

5.89

6.79

158,500

Feb.

,520

,39O

,340

,340

,380

,4OO

,370

,310

,240

,220

,230

,750

,5OO

,330

,260

,210

,28O 

,250

,230

,220

,260

,210

,210

,210

,230

,230

,230

,250

1,330

------

37,930

1,308

2.99

3.22

75,230

Mar.

1,540

2,720

2,530

2.11O

1,720

1,500

1.50O

*1,750

1,560

1,380

1,28O

1,26O

1,250

1,220

1,220

1,220

1,250 

1,310

1,550

1,620

1,980

2,580

3,250

3,870

4.O1O

4.O8O

3,100

2,580

2,72O

2,700 

2 , 660

65,020

2,097

4.79

5.52

129,000

Apr.

2.46O

2,110

1.9OO

1,930

1,93O

1.790

1,830

1,910

1,840

1,860

*2,O30

2,03O

2,200

2,500

2,660

2,480

2,080 

1,840

1,94O

2,560

3,330

5.580

3,100

2,620

2,320

2,280

2,280

2,20O

2,12O

1,830

67,540

2,251

5.14

5.73

154,000

May

1,760

1,750

1,700

1,690

1,73O

1,760

1,860

2.OOO

2,220

2,46O

2,410

2,220

1,850

1,7OO

1,720

*2,O80

3,090 

3,870

4.56O

4,130

3, ISO

2,720

3,020

2,830

2,480

2,500

2,640

2,200

2,14O

2,770

3,41O

76,2lt>

2,458

5.61

6.47

151,200

June

3,150

2,670

2,530

2,560

2,350

2,110

1,960

1,930

2,440

3,060

3,060

2,340

2,100

2,120

2,820

2,660

3,060 

2.9OQ

3,82O

4.O8O

2,980

2,560

2,420

2,170

1,950

1.82O

*2,200

2,360

2,140

1,890

76,190

2.54O

5.8O

6.47

151,100

July

1,770

1,720

1,730

1,720

1,860

2,300

2.O30

2.O40

2,260

2,400

2,470

2,460

2,40O

2,080

1,750

1,700

1,620 

1,650

1,960

2,140

2,200

1,940

1,770

1,720

1,66O

1,520

1,39O

1,300

1,250

1,150 

1,100

57.O6O

1,841

4.20

4.84

113,200

Aug.

1,050

950

92O

.880

85O

850

86O

*873

882

930

l.OOO

1,100

1,210

1,350

1,43O

1,120

920 

910

1,OOO

1,120

1,200

1,210

1,240

1,110

1,020

1.48O

1,07O

91O

950

1,020 

950

. 32,345

1,043

2.38

2.75

64,160

Sept.

970

891

81O

78O

74O

780

82O

90O

910

910

990

873

80O

750

7OO

720

74O 

770

*819

855

750

65O

6OO

750

855

920

1,110

855

92O

1.6OO

25,538

851

1.94

2.17

5O,650

Calendar year 1955: Max 14.8OO Min 5OO Mean 2,071 Cfsm 4.73 In. 64.19 Ac-ft 1,499,OOO

Water year 1955-56: Max 14,800 Min 578 Mean 2,195 Cfsm 5.01 In. 68.21 Ac-ft 1,593,000

Peak discharge (base, 6.4OO cfs). Oct. 10 (5:50 a.m.) 6,670 cfs (51.15 ft); Oct. 25 (9 p.m.) 

6,780 cfs (51.18 ft); Oct. 29 (8:30 p.m.) 9,430 cfs (52.29 ft); Nov. 1O (5 a.m.) 7,O40 cfs (51.3O 

ft); Nov. 27 (l2:3O p.m.) 6,930 cfs (51.25 ft); Dec. 12 (3 a.m.) 23.5OO cfs (56.84 ft); Dec. 22 

(8 p.m.) 7,680 cfs (51.58 ft).

* Discharge measurement made on this day.

Note. Doubtful gage-height record July 28 to Aug. 7, Aug. 10-12, Sept. 3-7, 13-18, 21-24; discharge estimated on basis of records for nearby stations.
PUYALLUP RIVER BASIN 79

White River at Greenwater, Wash.

Location. Lat 47°08'50", long 121°38'50", in SE£ sec. 10, T. 19 N., R. 9 E., on right 

bank three-quarters of a mile southeast of Greenwater, three-quarters of a mile upstream from Greenwater River, 18| miles east of and 25 miles upstream from Buckley.

Drainage area. 216 sq mi.

Records available. December 1911 to May 1912 (fragmentary), March 1929 to September 

1956.Published as "near Enumclaw" 1911-12.

Gage.--Water-stage recorder. Altitude of gage is 1,785 ft (from river-profile map). 

Prior to May 6, 1912, staff gage at site 2 miles upstream at different datum.

Average discharge. 27 years (1929-56), 840 efs (608,100 acre-ft per year).

Extremes.--Maximum discharge during year, 11,400 cfs Dec. 12 (gage height, 7.48 ft), from 

rating curve extended above 4,300 cfs; minimum, 286 cfs Mar. 11 (gage height, 2.08 ft).

1911-12, 1929-56: Maximum discharge, 18,100 cfs Dec. 21, 1933 (gage height, 

9.38 ft), from rating curve extended above 3,600 cfs by logarithmic plotting; minimum, 

120 cfs Nov. 2, 1935 (gage height, 1.69 ft).

Remarks. Records good. No regulation or diversion above station. 

Revisions (water years) . WSP 1286: 1932-33(M) , 1934, 1943(M) .

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Oct. 26 to Nov. 9, Dec. 12 to Feb. l)

2.1 

2.3 

2.6 

3.0 

3.5

290

375

540

830

1,300

4.0 

4.5 

5.5 

6.5

1,910

2,650

4,700

7,500

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 total

Mean

Cfsm

In.

Ac-ft

Oct.

395

loo

395

458

492

430

425

508

1,030

1,150

847

750

720

712

698

668

654

647

640

619

579

553

516

715

1,890

*1,480

1,070

1,170

2,210

2,540

1,580

26,741

863

4.00

4.60

53,040

Nov.

1,240

1,480

2,740

3,150

2,490

1,880

1,530

1,420

1,600

3,730

2,540

1,860

1,580

1,330

1,160

1,130

1,060

1,000

1,270

1,010

933

856

838

830

1,090

1,510

1,990

1,750

1,430

1,330

47,757

1,592

7.37

8.22

94,720

Dec .

1,280

1,110

996

898

881

838

*766

728

698

698

3,800

6.650

2,790

1,900

1,540

1,280

1,120

1,000

1,010

1,170

1,460

2,550

2,180

1,650

1,370

1,240

1,100

969

890

790

46,182

1,490

6.90

7.95

91,600

Jan.

766

750

758

890

881

838

7S8

758

720

682

668

640

675

647

830

933

847

847

806

774

750

750

750

705

668

633

605

598

560

516

*474

22,517

726

3.36

3.88

44,660

Feb.

469

516

504

474

464

442

436

420

415

410

425

447

415

400

375

348

405

395

380

375

366

348

344

344

344

334

330

334

334

11,593

400

1.85

2.00

22,990

Mar.

420

464

442

415

385

366

375

370

370

348

330

322

326

*322

314

318

326

339

380

395

436

486

 566

640

758

798

682

633

619

619

592

14,156

457

2.12

2.44

28,080

Apr.

560

522

504

540

522

510

522

540

586

758

978

1,020

1,280

1,610

1,640

1,400

1,210

*1,160

1,450

1,980

2,600

2.790

2,280

1,860

1,660

1,690

1,640

1,470

1,320

1,210

37,812

1,260

5.83

6.51

75,000

May

1,120

1,110

1,080

1.060

1,090

1,190

1,370

1,610

1,840

1,940

1,750

1,510

1,420

1,220

1,330

1,790

2,540

3,540

4,460

4,410

3,320

2,940

*3,230

3,170

2,840

2,720

2,420

2,120

2,220

2 , 890

3,730

68,980

2,225

10.3

11.88

136,800

June

5,860

3,210

2,990

2,900

2,480

2,010

1,780

1,700

1,980

2,400

2,360

2,050

1,970

1,980

2,040

1,950

1,920

2,050

2,510

2,490

2,120

1,990

1,950

1,840

1,700

1,680

1,910

2,190

2,120

1 , 880

66,010

2,200

10.2

11.37

130,900

July

1,780

1,720

1,750

1,770

*1,-820

1,840

1,780

1,940

2,200

2,430

2,480

2,580

2,500

2,190

1,850

1,770

1,750

1,780

1,970

2,150

2,060

1,870

1,690

1,650

1,580

1,420

1,260

1,170

1,110

1,070

1.020

55,510

1,791

8.29

9.56

110,100

Aug.

996

906

847

814

838

856

881

881

898

898

898

933

978

1,070

1,080

924

*856

847

890

951

996

978

996

942

898

942

830

758

782

750

720

27,834

898

4.16

4.79

55,210

Sept.

755

640

612

579

572

566

586

612

619

626

758

605

560

534

522

516

528

546

566

566

510

469

464

474

492

528

522

498

571

682

17,058

569

2.63

2.94

33,830

Calendar year 1955: Max 6,650 Min 268 Mean 1,037 Cfsm 4.80 In. 65.14 Ac-ft 750,500

Water year 1955-56: Max 6,650 Min 314 Mean 1,208 Cfsm 5.59 In. 76.14 Ac-ft 876,900
80 PUYALLUP RIVER BASIN 

Greenwater River at Greenwater, Wash.

Location. Lat 47°09'15", long 121 0 38'00", in NW^NW^ sec. 11, T. 19 N., R. 9 E., on left 

bank 1 mile upstream from mouth, 1 mile east of Greenwater, and 19 miles east of 

Buckley.

Drainage area.--73.9 sq mi.

Records available.--September 1911 to August 1912 (fragmentary), May 1929 to September 

1956. Published as "near Enumclaw" 1911-12.

Gage. Water-stage recorder. Altitude of gage is 1,725 ft (from topographic map). Prior 

to Aug. 10, 1912, staff gages at approximately same site at different datums. May 1, 

1929, to Aug. 14, 1934, water-stage recorder at site 900 ft upstream at different datum.

Average discharge.--27 years (1929-56), 207 cfs (149,900 acre-ft per year).

Extremes. Maximum discharge during year, 2,230 cfs Dec. 12 (gage height, 5.91 ft); minimum, 52 cfs Sept. 25, 26 (gage height, 2.22 ft).

1911-12, 1929-56: Maximum discharge, 4,280 cfs Dec. 11, 1946 (gage height, 7.50 ft), 

from rating curve extended above 2,000 cfs; minimum, 23 cfs Oct. 7, 1934; minimum gage 

height, 2.00 ft Nov. 28 to Dec. 2, 1952.

Remarks. Records good. No regulation or diversion above station. 

Revisions (water years). WSP 1246: Drainage area. WSP 1286: 1947(M) .

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

discharge, in cubic feet per second)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

2.3 52

2.5 77

2.7 112

2.9 158

3.1 Z15

3.4 

3.7 

4.0 

4.5 

5.0

320

455

625

960

1,360 3.1 

3.4

50

75

112

160

245

350

3.7 

4.0 

4.5 

5.0

480

640

970

1,360

5.5 1,820

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

59

56

56

65

78

70

65

71

210

272

221

180

166

151

136

127

119

114

106

104

101

95

91

108

151

*191

177

275

558

Tfz

5,337

172

2.33

2.69

10,590

Nov.

360

352

538

685

718

554

455

400

469

1,160

897

673

554

472

396

360

309

297

324

286

261

241

228

218

275

445

589

472

378

356

13,722

457

6.18

6.91

27,220

Dec.

352

316

278

250

234

221

*209

200

203

203

831

1,690

893

598

480

410

362

326

304

308

326

460

540

455

394

358

326

294

276

259

245

12,601

406

5.49

6.34

24,990

Jan.

236

224

230

294

.504

280

259

236

221

209

200

194

200

197

239

248

239

230

224

215

206

197

197

188

175

165

158

155

148

*140

142

6,550

211

2.86

3.30

12,990

Feb.

168

ISO

128

124

119

117

112

108

106

104

110

130

121

117

117

140

150

130

106

102

98

94

92

92

90

89

87

89

89

3,279

113

1.53

1.65

6,500

Mar.

106

160

155

142

128

119

114

114

112

106

102

98

96

*92

89

89

92

106

140

148

160

182

197

215

252

276

239

209

200

200

194

4,632

149

2.02

2.33

9,190

Apr.

182

172

165

170

168

160

165

168

182

264

370

390

480

598

598

505

422

*398

480

688

970

 1,040

872

706

598

604

616

570

520

' 475

13,696

457

6.18

6.89

27,170

May

445

426

418

410

410

440

490

570

670

730

670

575

510

470

500

652

949

1,260

1,430

1,520

1,250

1,090

1,080

1,030

921

858

802

*718

688

781

926

23,691

764

10.3

11.92

46,990

June

942

865

802

748

670

580

530

495

495

550

545

515

485

470

495

500

520

520

575

592

560

530

495

455

418

394

394

402

398

374

16,314

544

7.36

8.21

32,360

July

358

343

336

326

*322

322

308

304

308

312

304

294

287

273

256

239

230

218

209

197

191

180

175

168

162

155

150

142

138

130

128

7,465

241

3.26

3.76

14,810

Aug.

126

121

119

117

112

108

104

102

98

96

94

90

89

87

85

85

*82

78

78

75

74

72

72

71

72

87

78

72

72

71

68

2,755

88.9

1.20

1.39

5,460

Sept.

67

65

64

62

61

60

59

59

59

60

96

74

65

61

59

58

57

56

54

54

56

54

53

53

52

53

56

57

65

80

1,829

61.0

0.825

0.92

3,630

Calendar year 1955: Max 1,690 Min 56 Mean 272 Cfsm 3.68 In. 49.90 Ac-ft 196,600

water year 1955-56 : Max 1,690 Min 52 Mean 306 Cfsm 4.14 In. 56.31 Ac-ft 221,900

* Discharge measurement made on this day.
PUYALLUP RIVER BASIN 81

Mud Mountain Reservoir near Buckley, Wash.

Location. Lat 47°08'30", long 121°55'50", in NE£ sec. 17, T. 19 N., R. 7 E. , on left bank 

of reservoir just upstream from Mud Mountain Dam on White River, 5 miles southeast of 

Buckley and 6 miles downstream from Clearwater River.

Drainage area. 400 sq mi.

Records available.--October 1943 to September 1956. Month-end contents only October 1943 

to September 1944, published in WSP 1316.

Gage.--Staff gage read once daily. Datum of gage is at mean sea level (levels by Corps of 

Engineers).

Extremes. Maximum contents observed during year, 37,300 acre-ft June 20 (elevation, 

1,117.1 ft); minimum observed, 43 acre-ft Oct. 1-6, 8, Mar. 14-22, Sept. 8-18 (elevation, 908.0 ft).

1944-56: Maximum contents observed since dam was completed,.that of June 20, 1956; 

no pool at times most years.

Remarks. Reservoir, for flood control, is formed by earth-fill dam. Embankment completed 

and storage began on small scale in 1942. Capacity, 106,000 acre-ft between elevations 

895 ft (invert of outlet tunnel) and 1,215 ft (spillway crest). Storage is not retained but is dissipated as soon after a flood as is possible without creating damaging 

flows downstream in order to have the maximum capacity available for any following 

flood which might develop,

Cooperation. Records of reservoir elevations and capacity table furnished by Corps of 

Engineers.

Cjopacity table (elevation, ir

(Prepared by

908 43

910 52

915 77

920 107

930 191

950 641

i feet, and cont

Corps of Engine

970

990

1,020

1,050

1,100

1,150

ents, in acre-feet)

ers)

1,520

2,910

6,260

11,850

29,050

55,860

Contents, in acre-feet, at 12:3O p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

43

43

43

43

43

43

134

43

366

1,900

569

83

83

83

83

83

83

366

1,850

1,870

1,840

1,850

1,860

1,870

2,570

4,450

3,230

2,440

3,510

10,100

9,230

1,025.4

+7,030

Nov.

5,180

2,380

5,300

8,080

10,800

8,750

6,400

2,910

2,380

5,670

6,970

3,490

2,440

2,380

2,220

2,150

2,140

2,170

2,570

2,440

2,300

2,220

1,940

1,510

1,760

5,130

7,240

6,040

2,720

1,580

971.5

-5,460

Dec.

1,640

1,110

179

134

134

95

2,290

222

95

134

1,880

14,200

16,300

14,800

15,800

16.400

15,500

8,170

5,790

2,160

1,470

3,580

7,750

7,750

5,740

3,000

1,250

464

464

464

464

943.5

-1,160

Jan.

438

389

464

491

519

338

303

294

266

266

266

249

266

266

266

413

323

344

344

344

303

249

249

1,240

233

191

191

191

191

191

191

951.7

+247

Feb.

1,840

2,110

674

191

191

191

191

191

191

191

141

141

141

141

191

1,110

1,620

1,670

1,940

2,680

519

107

107

107

1,160

1,940

2,590

107

107

920.0

-591

Mar.

107

107

107

107

107

107

107

107

107

107

107

107

107

43

43

43

43

43

43

43

43

43

62

134

134

609

72

62

62

62

62

912.0

-45

Apr.

62

62

62

62

62

62

62

62

62

266

266

303

783

1,820

3,120

3,110

2,010

641

708

2,290

6,110

11,000

11,300

16.500

15,000

13,400

12,000

9,840

7,990

5,250

1,001.3

+3,900

May

2,830

817

148

137

154

191

609

1,280

2,380

2,140

4,440

4,160

2,510

1,020

438

1,330

4,070

9,720

16,400

22,900

27,100

28,700

29,900

31,500

31,600

31,600

31,300

52,000

30,200

29,200

30,400

1,105.0

+27,440

June

52,400

55,200

54,100

54,600

33,400

51,100

28,500

25,5OO

25,900

28,000

50 , 900

52,800

53,800

34,200

34,900

35,000

55,400

55,700

56.4OO

57 , 500

36,200

54 , 500

51,800

28,600

25,000

21,300

18,000

15,500

13,300

10 , 100

1,034.9

-22,710

July

7,350

5,970

4,220

4,930

5,000

4,870

5,560

7,000

9,050

9,090

9.640

9,520

9,400

5,180

5,700

1,990

491

253

641

6,560

8,100

8,290

7,600

6,880

6,110

5,110

4,030

3,170

2,850

2,670

1,520

950.8

-8,020

Aug.

191

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

107

920.0

-560

Sept.

107

107

107

107

77

77

77

43

43

43

43

45

43

43

43

45

43

43

141

1,780

2,080

1,820

1,820

1,830

1,830

1,870

1,880

1,850

1,860

1,910

976.4

+1,790

Calendar year 1955- .................. * -2,710

Water year 1955-56-................... * +1,860

t Elevation, in feet, at 12 p.m. (estimated) on last day of month. 

^ Change in contents in acre-feet.
82 PUYALLUP RIVER BASIN

White River near Buckley, Wash.

Location. Lab 47°09'05", long 121°57'00", in SW£NW£ sec. 8, T. 19 N., R. 7 E., on right 

bank 0.7 mile upstream from Red Creek, 1 mile downstream from Mud Mountain Dam, 

4 miles east of Buckley, and 8 miles downstream from Clearwater River.

Drainage area. 401 sq mi.

Records available.--October 1928 to November 1933, October 1938 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level, datum of 1929 (Corps 

of Engineers benchmark). Oct. 26 to Dec. 9, 1928, staff gage and Dec. 9, 1928, to 

Nov. 30, 1933, water-stage recorder, at site 3 miles upstream at different datum. 

Nov. 26, 1938, to Feb. 14, 1939, staff gage at present site and datum.

Average discharge.--23 years, 1,417 cfs (1,026,000 acre-ft per year), adjusted for storage since December 1943.

Extremes. Maximum discharge during year, 13,700 cfs Dec. 12 (elevation, 808.16 ft); minimum daily, 169 cfs Sept. 20.

1928-33, 1938-56: Maximum discharge, 17,000 cfs Feb. 26, 1932 (gage height, 

17.5 ft, site and datum then in use), from rating curve extended above 4,000 cfs; minimum, 10 cfs Sept. 26, 1948 (elevation, 796.92 ft); minimum daily, 60 cfs May 17, 1955.

Maximum stage known, 23.4 ft in December 1933 from floodmarks, at former site 

(discharge, 28,000 cfs, from rating curve extended above 3,000 cfs).

Remarks. Records good except those for periods of no gage-height record or shifting 

control, which are fair. Diversion for some community use within basin. Flow regulated by Mud Mountain Reservoir for flood control (see preceding page). Storage is 

not retained and observed annual runoff closely represents natural runoff of basin.

Cooperation. Water-stage recorder inspected by employees of Corps of Engineers.

Revisions. WSP 1246: Drainage area.

Rating tables, water year 1955-56, except periods of shifting control ( elevation, 

In feet, ana discharge In cubic feet per second)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

803.0 2,570

804.0 3,940

806.0 7,810

807.3 11,200

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

799.2

800.0

801.0

802.0

364

635

1,140

1,880

803.0

804.0

805.0

2,900

4,250

5,970

799.3

800.0

801.0

802.0

153

360

840

1,540

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac -ft

(t)

Oct.

541

538

541

742

880

524

769

760

2,110

2,780

2,360

1,540

1,340

1,210

1,120

1,000

948

*a380

870

870

825

792

752

960

2,270

*2,790

2,660

2,450

2,680

3,680

4.100

45,782

1,477

90,810

+7,030

Nov.

3,810

2,820

3,840

4,120

4,270

4,190

3,940

3,260

2,450

4,220

4,460

4,040

2,680

a2,650

a2,650

a2,650

a2,600

a2,600

2,560

2,100

1,870

1.650

1,790

1,720

2,000

2,920

4,200

4.630

3,960

2,910

93,560

3,119

185,600

-5,460

Dec.

2,900

2,700

2,440

1,840

1,620

*1,060

1,610

1,820

1,540

1,500

4,380

11.100

4,540

*3,66Q

3,080

2,530

3,450

3,720

3,450

3,080

2,910

3,240

3,600

3,630

3,520

3,260

2,820

1,920

1,750

1,640

1,530

91,840

2,963

182,200

-1,160

Jan.

1,470

1,410

1,640

2,360

2,450

2,090

1,870

1,650

1,510

1,400

1,330

1,270

1,380

1,350

1,910

2,150

*1,97Q

2,040

2,040

1,980

1,820

1,740

1,790

1,440

1,530

1,330

1,240

1,200

1,130

1,030

688

50,208

1,620

99,590

+247

Feb.

472

1,130

1,280

925

931

873

851

824

790

785

840

1,070

931

856

610

558

595

605

585

a940

a 900

a800

a700

535

524

336

851

1,030

670

22,597

779

44,820

-591

Mar.

890

1,380

1,230

1,070

*925

824

846

890

818

746

670

665

675

650

645

670

705

834

1,060

1,090

1,250

1,500

1,830

2,130

2,340

2.610

2,010

1,670

1,700

1,640

1,560

37,523

1,210

74,430

-45

Apr.

1,400

1,300

1,210

1,300

1,290

1,190

1,240

1,270

1,320

*1,690

2,300

2,380

2,710

3,140

3,420

3,500

3,410

3,020

3,060

3,520

4,000

5,020

2,650

2,870

3,810

3,760

3,690

3,620

3,510

3,330

79,930

2,664

158,500

+3 , 900

May

3,070

2,640

2,210

2.110

2,160

2,280

2,510

*2,760

3,020

3,230

3,340

3,310

3,160

2,900

2,670

2,970

3,420

3,910

4,180

4,410

*4,530

4,580

4,650

4,670

4,740

4,720

4,410

3,680

4,620

4,630

4,650

110,140

3,553

218,500

+27,440

June

4,680

4,720

3,440

4,770

4,790

4,740

4,680

3,720

2,450

2,370

2,340

2,510

*2,590

2,320

2,770

2,760

2,760

2,800

3,060

5,630

5,810

4,040

4,240

4,180

4,100

4,000

3,910

3,840

3,750

3,650

107,200

3,573

212,600

-22,710

July

3,340

2,790

 2,400

2,090

2,590

2,620

2,050

1,940

2,550

2,950

3,030

5,050

3,340

5,450

3,260

2,940

2,450

2,100

1,570

999

2,370

2,440

2,400

2,350

2,500

2,150

2,020

1,800

1,570

*1,670

1,770

74,099

2,590

147,000

-8,020

Aug.

1,560

1,050

1,000

961

955

985

991

991

1,010

1,000

997

1,040

1,090

1,190

1,260

1,090

973

937

991

1,070

1,120

1,100

1,130

1,050

1,020

1,160

955

856

895

868

854

51,909

1,029

65,290

-560

Sept.

829

741

695

665

650

655

665

695

700

725

937

741

660

620

610

600

*605

630

420

*169

684

522

499

517

540

615

655

590

650

1.000

19,264

642

58,210

+1,790

Adjusted for change In reservoir contents

Ac-ft

1,591

3.97

4.57

97,840

3,027

7.55

8.42

180,100

2,944

7.34

8.46

181,000

1,624

4.05

4.67

99,840

769

1.92

2.07

44,250

1,210

5.02

3.48

74,580

2,729

6.81

7.59

162,400

5,999

9.97

11.50

245,900

5,191

7.96

8.88

189,900

2,261

5.64

6.50

139,000

1,020

2.54

2.93

62,750

672

1.68

1.87

40,000'

Calendar year 1955: 

Water year 1955-56:

Max 

Max

11

11

,100 

,100

Mln 

Mln

60 

169

Mean 

Mean

1 

2

,824 

,088

Ac-ft 

Ac-ft

1,520 

1,516

,000 

,000

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean 

Mean

1 

2

,820 

,090

Cfsm 

Cfsro

4.54 

5.21 In!

61

70

.58 

.94

Ac-ft 

Ac-ft

1,317 

1,517

,000 

,000

* Discharge measurement made on this day.

t Change In contents In Mud Mountain Reservoir, In acre-feet, furnished by Corps of Engineers, 

a No gage-height record; discharge estimated on basis of records for Mud Mountain Reservoir. 

Note.--Shifting-control method used Dec. 14, Mar. 5-18, May 14 to June 11, Sept. 15-19.
PUYALLUP RIVER BASIN 83

Stuck River near Sumner, Wash.

Location. Lat 47°14'55", long 122°14'35", In NE^SWA sec. 1, T. 20 N., R. 4 E., on right 

bank 300 ft downstream from county bridge, 3 miles north of Sumner, and 4j miles upstream from mouth.

Drainage area. 470 sq ml, excludes that of Lake Tapps. 

Records available. January 1945 to September 1956.

Gage.--Water-stage recorder. Datum of gage Is at mean sea level (Intercounty River Improvement Commission benchmark).

Average discharge. 11 years, 635 cfs (459,700 acre-ft per year).

Extremes.--Maximum discharge during year, 15,100 cfs Dec. 12 (elevation, 61.40 ft); minimum, 36 cfs Oct. 2,3; minimum elevation, 51.42 ft Sept. 24.

1945-56: Maximum discharge, that of Dec. 12. 1955; minimum, 32 cfs Nov. 29, 30, 

1952; minimum elevation, 48.48 ft Feb. 1, 1945 (channel affected by dredging).

Remarks.--Records good except those for periods of shifting control, which are fair. An 

average of 600 to 900 cfs diverted from White River (head of Stuck River) above station 

into Lake Tapps for Dieringer powerplant of Puget Sound Power & Light Co. High flow 

influenced by regulation in Mud Mountain Reservoir (see p. 81 ).

Revisions.--WSP 1216: Drainage area.

Rating tables, water year 1955-56, except periods of shifting control (elevation, 

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

Oct. 30 to Apr. 30 Apr. 30 to Sept. 30

51.7

52.0

52.4

52.8

53.2

53.8

54.5

31

61

125

221

355

655

1,160

52.3

52.6

53.0

53.5

54.0

148

235

405

725

1,130

55.0

56.0

57.0

59.0

61.0

2,180

3,560

5,280

9,440

14,100

51.4

51.8

52.2

53.0

54.0

55.0

56.0

80

170

300

680

1,440

2,570

4,120

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

2J

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

46

40

37

54

62

386

348

98

317

1,030

892

247

160

138

117

112

108

125

608

666

108

86

70

89

*447

*1,110

972

685

913

1,940

2,700

14,711

475

29,180

Nov.

2,650

1,840

2,800

*2,760

3,140

3,230

3,000

2,380

1,220

2,540

3,280

3,120

1,510

824

444

266

232

270

1,100

606

346

290

274

355

770

2,010

3,240

5,540

3,040

2,070

53,147

1,772

105,400

Dec.

1,880

1,760

1,300

1,230

*1,980

1,580

1,380

860

559

449

2,100

*15,400

*5,900

4,940

2,240

1,110

1,860

2,310

2,040

2,140

2,160

2,120

2,350

2,260

2,040

1,810

1,560

944

484

460

449

67,655

2,182

134,200

Jan.

427

422

770

1,240

1,780

1,440

1,170

740

514

449

438

400

427

370

648

*704

466

454

559

816

634

520

655

654

618

337

310

302

286

270

28°

19,102

616

37,890

Feb.

242

260

263

270

263

249

246

232

219

209

225

249

232

209

263

164

156

151

148

164

213

246

232

324

578

613

472

235

225

7,552

260

14,980

Mar.

225

*337

380

337

282

256

266

306

302

266

252

232

238

213

200

197

203

188

174

191

213

194

375

732

778

1,070

641

400

410

422

444

10,724

346

21,270

Apr.

375

346

306

278

263

242

263

222

*213

209

319

520

648

936

1,240

1,290

1,180

872

662

1,010

1,430

2,350

2,430

1,170

5,420

3,540

2,250

2,140

2,020

5,240

55,184

1,175

69,790

May

5,620

5,270

2,680

2,490

2,080

716 898"

1,050

1,230

1,460

1,610

1,650

1,480

*1,180

849

954

1,480

2,540

2,900

2,920

2,790

2,600

2,610

2,680

2,700

2,720

2,740

1,490

2,670

2,650

2 , 670

65,137

2,101

129,200

June

2,710

2,720

1,580

2,680

2,790

2,770

2,720

2,380

525

465

455

450 6"T3

1,410

1,070

1,010

1,020

1,030

1,520

1,860

2,240

2,340

2,720

2,680

*2,600

2,490

2,390

2,290

2,190

2 ,O80

55,578

1,855

110,200

July

1,900

1,050

1,290

272

559

982

716

580

559

1,510

1,600

1,650

1,810

2,050

1,620

1,520

919

500

555

565

470

490

505

480

408

524

257

218

176

194

182

25,651

827

50,880

Aug.

655

1,240

*854

165

152

152

142

158

142

145

142

155

135

145

158

150

142

135

132

135

138

140

140

140

138

152

148

150

155

140

152

6,707

216

13,300

Sept.

135

152

125

120

118

114

112

112

114

122

148

135

116

112

110

108

110

698

606

240

132

128

108

94

98

*102

122

98

102

114

4,685

156

9,290

Calendar year 1955: Max 13,400 Min 37 Mean 774 Ac-ft 560,200

Water year 1955-56: Max 13,400 Min 37 Mean 1,000 Ac-ft 725,600

* Discharge measurement made on this day. 

Note.--Shifting-control method used Oct. 6, 7, 9-11, 19, 20, 25-29, Apr. 24-30.
84 PUYALLUP RIVER BASIN

Lake Tapps near Sumner, Wash.

Location. Lat 47°14'30", long 122°11'30", in NE£ sec. 8, T. 20 N., R. 5 E., ij miles east 

of Dieringer and 3 miles northeast of Sumner.

Drainage area. 12.5 sq mi.

Records available. November 1911 to September 1956. Prior to October 1950, change in contents published with records for Puyallup River at Puyallup. Month-end contents only 

November 1911 to September 1950, published in WSP 1316.

Gage.--Staff gage read hourly. Datum of gage is 0.7 ft above mean sea level (levels by 

Puget Sound Power & Light Co.).

Extremes.--Maximum contents observed during year, 50,450 acre-ft Jan. 19 (gage height, 

541.02 ft); minimum observed, 10,540 acre-ft Mar. 16 (gage height, 518.14 ft).

1934-56: Maximum contents observed, 50,490 acre-ft Nov. 1, 1954 (gage height, 

541.04 ft); minimum, 7,620 acre-ft Mar. 21, 1953 (gage height, 515.00 ft).

The Puget Sound Power & Light Co. reports a minimum observed lake gage height of 

505.70 ft June 24, 1912.

Remarks. Reservoir is formed on natural lake into which a great part of the low-water 

flow of White River is diverted. Usable capacity, 50,400 acre-ft between elevations 

505 and 541 ft. Storage used for power.

Cooperation. Gage-height record and contents curve furnished by Puget Sound Power & Light

Month-end gage height and contents, water year October 195S to September 1956

Date

Calendar year 1955 .........

Peb . 29 ......................

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

Water year 1955-56 .........

Gage height 

(feet)t

-

538.98

_

Contents 

(acre-feet)

-

45,860

_

Change In contents 

(acre-feet)

-510

+6,960

-6,350

-25,110

-2,610

+690

+3,370

t Qage height at 12 p .n
PUYALLUP RIVER BASIN 85

Puyallup River at Puyallup, Wash.

Location. Lat 47°12'30", long 122 0 19'35", in NW^ sec. 20, T. 20 N., R. 4 E., on left bank 

0.8 mile upstream from bridge at Clark Creek, 1 mile northwest of Puyallup, and 7 miles 

upstream from mouth.

Drainage area. 948 sq mi.

Records available. May 1914 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level, datum of 1929. Prior to

~~T)ec. 3, 1919, at sites l£ miles upstream and 900 ft upstream at different datums. 

Dec. 3, 1919, to Nov. 9, 1935, at site 500 ft upstream at datum 9.61 ft higher than 

present datum.

Average discharge. 42 years, 3,296 cfs (2,386,000 acre-ft per year), adjusted for storage 

in Lake Tapps since October 1934, and Mud Mountain Reservoir October 1944 to September 

1947.

Extremes. Maximum discharge during year, 37,600 cfs Dec. 12 (elevation, 25.73 ft); minimum, 386 cfs Oct. 1, 2 (elevation, 8.33 ft); minimum daily, 609 cfs Oct. 2.

1914-56: Maximum discharge, 57,000 cfs Dec. 10, 1933 (elevation, 31.0 ft, present 

datum); minimum, 306 cfs Sept. 25, 1955 (elevation, 8.23 ft); minimum daily, 400 cfs 

Nov. 30, 1952.

Remarks. Records excellent. All diverted water returned to river above gage. Large part 

6TTlow of White River diverted into Lake Tapps (see preceding page) returned via 

Stuck River above station. Flood flow regulated by Mud Mountain Reservoir on White 

River (see p. 81). Some pondage on tributaries and upper Puyallup River. Diurnal 

fluctuations caused by powerplants and glacial melts above station.

Revisions. WSP 832: Drainage area.

Rating table, water year 1955-56 (elevation, In feet, and discharge, 

In cubic feet per second)

12.0

13.0

585

915

1,360

1,870

3,090

4,510

6,150

14.0

15.0

17.0

19.0

21.0

24.0

7,960

9,900

14,200

19,000

24,200

32,600

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

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13 

14

15

16

17

18

19 

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-f t

ft)

Oct.

1,130

609

1,420

1,940

2,640

2,320

2,390

1,890

3,750

7,660

4,900

3,230 

3,110 

3,230

2,570

2,280

2,740

2,750

2,990 

3,200

2,460

2,050

1,020 

*2,180

5,480

7,130

5,240

5,710

7,500

9.720 

p Ton

113,559

3,663

225,200

+7,730

Nov.

7,6OO

6,740

10,300

10,200

9,560

8,410

7,680

6,770

5,270

9,700

8,940

7,630 

5,600 

4,150

3,790

3,570

5.410

3,480

5,990 

4,630

4,360

3,860

3,740 

3,950

6,180

9,680

12,600

11,800

9,670

8,480

207,740

6,925

412,000

-510

Dec.

8,060

7,710

6,180

5,420

*5,880

5,340

5,160

4,400

4,680

4,230

11,400

*31,900 

15,000 

11,500

7,260

5,620

5,600

5,540

5,660 

7,200

9,110

11,100

10,000 

8,040

6,170

6,020

5,960

5,030

4,170

3,940

5,740

237,020

7,646

470,100

-410

Jan.

3,570

3,530

5,150

7,010

7,780

6,940

6,250

5,130

4,580

4,200

3,920

3,800 

3,960 

3,740

5,810

*6,150

5,290

5,030

5,200 

5,400

4,780

4,490

4,940 

4,600

4,240

3,730

3,470

3,350

3,310

3,240

3,370

145,960

4,708

289,500

-6,350

Feb.

5,500

3,590

3,120

2,910

2,910

2,990

3,160

3,110

2,990

2,540

2,200

2,090 

2,980 

2,810

2,690

2,450

2,570

1,940

1,290 

2,270

2,570

2,160

2,290 

2,400

2,450

1,850

2,670

2,470

2,690

 

75,060

2,588

148,900

-25,110

Mar.

2,740

»4,460

4,290

3,500

3,460

3,160

3,200

3,540

3,280

2,850

2,660

2,690 

2,560 

2,390

2,310

2,260

2,040

1,560

2,700 

3,000

3,300

4,050

5,070 

6,130

6,400

6,820

5,280

4,470

4,720

4,550

4,410

113,850

3,673

225,800

+7,090

Apr.

3,350

5,770

5,570

5,510

5,550

5,380

3,280

2,580

*3,170

3,550

5,770

4,050 

4,510 

4,680

4,450

5,170

4,750

4,280

4,090 

4,970

6,040

6,720

7,270 

5,050

6,880

7,070

5,790

5,500

4,890

6,070

139,030

4,634

275,800

+19,690

May

6,36O

5,930

5,260

5,140

4,800

2,900

3,900

4,510

4,820

5,340

5,390

5,060 

3,820 

*4,250

3,910

4,380

5,980

8,580

9,060 

8,970

7,670

7,180

7,420 

7,240

6,940

6,580

6,630

5,180

6,190

6,600 

7,490

183,060

5,905

363,100

+950

June

7,340

7,380

6,190

6,930

6,820

6,580

6,350

6,480

5,120

5,430

5,550

4,810 

4.720 

5,620

5,980

5,470

5,760

5,770

7,230 

8,160

7,560

7,140

7,120 

6,770

*6,580

6,360

6,610

6,730

6,460

6,060

191,080

6,369

379,000

+1,470

July

5,420

4,84O

4,870

5,950

4,400

5,480

4,480

4,320

4,400

5,740

6,25O

6^100 

6,130 

5,940

5,120

4,940

4,460

4,020

4,570 

4,680

4,540

4,150

4,120 

4,450

4,360

4,080

5,700

3,510

3,150

3,310 

2,920

142,380

4,593

282,400

-2,610

Aug.

5,280

5,920

»5,640

2,51O

1,730

2,30O

2,160

2,150

2,120

2,19O

1,690

fr.2BO 

1,950 

2,140

2,240

2,050

1,860

1,650

1.340 

2,120

2,630

2,470

2,400 

2,410

2,250

2,670

2,280

2,060

1,990

2,110 

2,020

69,570

2,244

138,000

+740

Sept.

2,000

1,330

942

1,530

1,440

1,450

1,450

1,400

1,050

1,610

1,920

1,790 

1,650 

1,590

1,450

858

1,560

1,970

*2,070 

1,620

1,460

1,260

816 

1,280

1,570

1,540

1,860

1,480

1,510

1,910

44,946

1,498

89,150

+690

Adjusted for change In contents In Lake Tapps

Mean

Cfsm

In.

Ac-ft

3,788

-

-

232,900

6,915

-

-

411,500

7,659

-

-

469,700

4,606

-

_

283,200

2,152

-

_

123,800

3,788

-

_

232,900

4,966

-

_

295,500

5,920

-

t_

364,000

6,395

-

_

380,500

4,551

_

_

279,800

2,256

_

_

138,700

1,510

-

_

89,840

Calendar year 1955: 

Water year 1955-56:

Max 

Max

31, 

31,

900 

900

Mln 

Mln

432 

609

Mean 

Mean

4 

4

,240 

,544

Ac-ft 

Ac-ft

3,069 

3,299

.000 

,000

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean 

Mean

4, 

4,

249 

549

Cfsm 

Cfsm 4.80

In. 

In. 65 .32

Ac-ft 

Ac-ft

3,076 

3,302

,000 

,000

* Discharge measurement made on this day. 

t Change In contents In Lake Tapps, In acre-feet, 

Power & Light Co.

;d on Information furnished by Puget Sound
86 DUWAMISH RIVER BASIN

Snow Creek near Lester, Wash.

Location. Lat 47°15'00", long 121°24'00", in NW^NW£ sec. 3, T. 20 N. , R. 11 E., on right 

bank at road crossing a quarter of a mile upstream from mouth and 5f miles northeast 

of Lester.

Drainage area. 11.9 sq mi.

Records available. October 1945 to September 1956.

Gage. Water-stage recorder with concrete and woven-wire control. Altitude of gage is 

1,950 ft (from topographic map).

Average discharge. 11 years, 69.1 cfs (50,030 acre-ft per year).

Extremes. Maximum discharge during year, 1,210 cfs Dec. 11 (gage height, 4.87 ft); minimum, 6.4 cfs Sept. 19, 20 (gage height, 2.08 ft).

1945-56: Maximum discharge, 1,210 cfs Jan. 31, 1953, Dec. 11, 1955 (gage height, 

4.87 ft); minimum, 3.0 cfs Nov. 29, 30, 1952 (gage height, 1.99 ft).

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

No regulation or diversion above station.

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

In cubic feet per second)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

2.1 7.3

2.3 19.2

2.5 38

2.8 77

3.2 

3.7 

4.2

159

315

585

2.0

2.1

2.2 

2.4

3.4

7.3

12.2

27

2.7 60

3.0 110

3.5 242

4.2 585

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

Day

1

2

3

4

5

6

7

8

9

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.

13.1

11.9

11.3

33

46

34

30

73

244

193

120

100

86

70

58

48

41

*37

34

30

28

26

24

42

76

91

94

254

326" 468

169

2,911.3

93.9

7.89

9.10

5,770

Nov.

Ill

98

204

419

279

169

128

115

268

519

265

152

110

88

70

60

50

45

40

36

34

*32

32

32

58

96

80

61

50

46

3,747

125

10.5

11.71

7,430

Dec.

42

38

36

32

30

30

28

27

26

25

435

581

208

125

100

85

70

60

50

45

60

120

100

85

70

60

50

45

40

35

32

2,770

89.4

7.51

8.66

5,490

Jan.

30

28

26

35

58

35

32

30

28

26

25

24

30

26

*23

25

26

25

25

23

22

21

20

19.2

18.5

17.1

17.1

17.1

16.4

15.1

15

758.5

24.5

2.06

2.37

1,500

Feb.

16

18

20

18

16

15

14

14

13

13

20

30

26

22

20

*22

22

20

18

17

16

15

15

14.5

14.5

13.9

13.3

13.3

13.3

502.8

17.3

1.45

1.57

997

Mar.

26

33

27

23

22

19.2

19.2

17.8

17.1

15.7

14.5

14.5

14.5

13.9

13.9

13.9

14.5

17.1

23

25

26

29

*38

45

54

60

BT

44

42

42 

40

855.8

27.6

2.32

2.67

1,700

Apr.

37

35

34

44

45

41

38

38

44

69

108

118

150

198

207

160

133

136

184

285

409

395

285

210

193

213

210

205

200

180

4,604

153

12.9

14.39

9,130

May

160

150

145

140

160

200

250

*300

304

307

226

165

138

143

190

292

425

505

511

307

307

340

277

226

239

204

171

213

319

366

8,116

262

22.0

25.36

16,100

June

292 22~0~

220

201

181

163

150

148

168

198

176

138

133

138

138

125

125

141

190

*160

125

114

110

95

85

86

112

125

106

86

4,449

148

12.4

13.90

8,820

July

78

83

83

78

83

97

86

95

~97 100

88

83

78

65

57

53

50

49

49

46

43

37

34

31

28

27

24

22

21

19.2 

*16 ,5

1,802.7

58.2

4.89

5.63

3,580

Aug.

17.8

16.4

15.7

15.1

15.1

13.9

13.3

12.7

12.2

12.2

12.2

11.2

10.7

10.7

10.7

10.7

10.7

10.2

10.2

10.2

9.7

9.7

9.2

9.2

9.7

10.2

9.7

9.2

9.7

9.2

 

356.1

11.5

0.966

1.11

706

Sept.

8.2

7.8

7.8

7.3

7.3

*7.3

7.3

7.3

7.3

7.8

16.5

9.7

8.7

7.8

7.3

7.3

7.3

6.8

6.4

773

8.7

7.3

6.8

8.2

7.8

7.8

7.3

10.2

26

25

275.6

9.19

0.772

0.86

547

Calendar year 1955: Max 601 Mln 7.8 Mean 83.5 Cfsm 7.02 In. 95.25 Ac-ft 60,440

Water year 1955-56: Max 581 Mln 6.4 Mean 85.1 Cfsm 7.15 In. 97.33 Ac-ft 61,770

Peak discharge (base, 350 cfs). Oc

(4.08 ft); Nov. 10 (2 a.m.) 684 cfs 

(10 p.m.) 452 cfs (3.99 ft); May 19

t. 29 (3 p.m.) 692 cfs (4.34 ft); Nov. 4 (12:30 p.m.) 505 cfs 

4.33 ft); Dec. 11 (9:30 p.m.) 1,210 cfs (4.87 ft); Apr. 21 

8 p.m.) 558 cfs (4.16 ft); May 30 (9 to 11 p.m.) 385 cfs (3.86

ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 13-21, Dec. 15 to Jan. 14, Jan. 31 to Feb. 15, Feb. 18-23,

Apr. 27 to May 7; discharge estimated on basis of recorded range In stage and records for nearby

stations .
DUWAMISH RIVER BASIN 87

Friday Creek near Lester, Wash.

Location. Lat 47°13'10", long 121 "27"10", in SE^NW^ sec. 18 T. 20 N., R. 11 E., on left 

bank 0.4 mile upstream from mouth and 2 miles northeast or Lester.

Drainage area. 4.55 sq mi.

Records available. October 1945 to September 1956.

Sage.--Water-stage recorder. Concrete control since Aug. 9, 1951. Altitude of gage is 

T.760 ft (from topographic map).

Average discharge. 11 years, 28.4 cfs (20,560 acre-ft per year).

Extremes. Maximum discharge during year, 406 cfs Dec. 11 (gage height, 4.31 ft); minimum, 

3.3 cfs Sept. 18, 19 (gage height, 2.55 ft).

1945-56: Maximum discharge, 497 cfs Dec. 11, 1946 (gage height, 4.90 ft); minimum, 

1.3 cfs Sept. 26-29, Oct. 2,3, 1949, Nov. 28, 29, 30, 1952; minimum gage height, 

2.28 ft Sept. 29, 30, 1946.

Remarks. Records good. Small diversion for domestic use. No regulation. 

Revisions. WSP 1216: Drainage area.

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

In cubic feet per second)

2.5

2.6

2.7

2.8

2.9

3.0

2.3

4.5

7.6

12.0

18.0

26

3.2 

3.4 

3.6 

3.8 

4.1

125

180

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

Cfsm

In.

Ac -ft

Oct.

6.3

6.0

6 .0

14.8

17.4

12.0

10.5

26

84

68

47

40

33

28

24

20

18.0

*16.2

15.0

13.2

12.0

11.0

10.5

19.2

29

32

39

118

181

128

68

1,153.1

37.2

8.18

9.43

2,290

Nov.

44

44

102

130

100

66

50

46

127

256

125

66

46

36

29

26

24

*22

21

19.6

18.0

*16.8

15.6

16.2

32

58

44

30

24

23

1,657.2

55.2

12.1

13.55

3,290

Dec.

22

20

18.8

16.8

16.2

15.0

14.4

13.8

13.2

1372

159

"80 203

50

38

32

27

22

20

20

27

62

50

38

33

29

25

22

20

18 .8 

17.4

1,156.6

37.3

8.20

9.45

2,290

Jan.

16.2

15.6

15.0

18.0

18.8

16.8

15.0

13.8

13.2

12.0

11.5

11.5

13.8

*13.2

12.0

12.0

12.0

12.6

13.2

12.0

11.0

10.5

10.5

10.0

9.6

8.8

8.4

8.4

7.6

T7G

7.6

378.2

12.2

2.68

3.09

750

Feb.

8.4

8.8

9.2

7.6

7.2

6.9

6.6

6.6

6.6

6.6

8.4

14.4

11.0

9.6

8.0

*8.4

8.4

7.6

6.3

6.3

6.0

6.0

6.0

6.0

5.7

5.7

5.7

5.7

5.7

215.4

7.43

1.63

1.76

427

Mar.

12.4

20

13.2

10.0

8.8

7.6

8.0

8.4

7.6

6.9

6.6

6.3

6.3

6.3

6.6

7.2

9.6

12.6

17.4

15.0

15.6

*17.4

20

21

24

26

18.8

15.6

16.2

16 .8 

16 .8

405.0

13.1

2.88

3.31

803

Apr.

15.6

13.8

13.2

16 .8

18.0

15.6

15.0

15.6

21

35

44

44

58

72

70

52

44

47

68

96

130 122-

88

72

66

73

70

65

68

57

1,585.6

52.9

11.6

12.96

3,140

May

51

50

47

44

47

54

66

78

*88

88

75

60

51

48

60

88

128

150

156

142

115

110

125

105

88

90

84

75

80

110 

132

2,685

86.6

19.0

21.95

5,330

June

~92~ 115

92

90

88

80

73

70

75

86

78

68

63

63

66

63

65

70

*86

80

68

62

58

51

46

47

57

60

56

47

2,115

70.5

15.5

17.29

4,200

July

43

44

43

42

44

5046"

47

48

47

42

38

36

32

28

24

24

23

22

21

19.6

17.4

16.2

15.0

13.8

12.6

12.0

11.0

10.5

9.6

Q y .0K

891.3

28.8

6.33

7.29

1,770

Aug.

*8.8

878

8.4

8.4

8.0

7.6

7.2

6.9

6.9

6.6

6.6

6.3

6.0

6.0

6.0

6.0

5.7

5.4

5.4

4.8

4.8

4.8

4.5

4.5

5.1

5.7

5.1

4.8

4.8

4.5 

4.2

188.6

6.08

1.34

1.54

374

Sept.

4.2

4.2

3.9

3.9

3.7

*3.7

3.7

3.7

3.7

3.9

6.9

4.5

3.9

3.9

3.7

3.7

3^

3.5

3.5

3.5

3.7

3.7

3.5

3.9

3.9

3.7

3.7

4.5

776" 8.6

126.0

4.20

0.923

1.03

250

Calendar year 1955: Max 256 Mln 4.8 Mean 33.6 Cfsm 7.38 In. 100.15Ac-ft 24,310

Water year 1955-56: Max 256 Mln 3.5 Mean 34.3 Cfsm 7.54 In. 102.65Ac-ft 24,910

Peak dlscharRe (base, 150 cfs). --Oct. 29 (1:20 p.m.) 291 cfs (4.08 ft); Nov. 4 (2 to 3 p.m.)

150 cfs (3.70 ft); Nov. 10 (3 a.m.) 360 cfs (4.22 ft); Dec. 11 (lO p.m.) 406 cfs (4.31 ft); May 19

(10 p.m.) 165 cfs (3.75 ft).

* Discharge measurement made on this day.

467240 O -58 -7
88 DUWAMISH RIVER BASIN

Green River near Lester, Wash.

Location . Lat 47°12'30", long 121033' 10", in NE^SE^ sec. 20 , T. 20 N. , R. 10 E. , on

right bank three-eighths of a mile downstream from Champion Creek, l£ miles downstream 

from McCain Creek, and 3 miles west of Lester.

Drainage area. 104 sq mi.

Records available. October 1945 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,480 ft (from river-profile map).

Average discharge. 11 years, 435 cfs (314,900 acre-ft per year).

Extremes . Maximum discharge during year, 7,630 cfs Dec. 12 (gage height, 11.3 ft, estimated from mean of surge); minimum, 40 cfs Sept. 19, 20, 23, 24 (gage height, 3.05 ft).

1945-56: Maximum discharge, 10,200 cfs probably Dec. 11, 1946 (gage height, 

12.7 ft, from high-water mark in well), from rating curve extended above 4,500 cfs; 

minimum, 22 cfs Nov. 30, 1952 (gage height, 2.92 ft).

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

No regulation or diversion above station.

Revisions (water years) . WSP 1286: 1947(M) . WSP 1316: 1948(M).

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

in cubic feet per second)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

3.5 

3.7 

4.0 

4.3 

4.6 

5.0

134

200

284

420

5.5 

6.O 

7.0 

8.0 

9.0

640

920

1,670

2,670

3,920

3.0 

3.2 

3.4

3.7 

4.0 

4.3 

4.6

50

69

105

157

227

309

8.0

9.0

10.0

445

665

935

1,670

2,670

3,920

5,420

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

74

70

68

108

186

144

125

187

816

848

590

472

4O6

360

310

269

240

*216

198

181

169

158

148

204

349

472

544

1,520

2,760

2,370

1,250

15,812

510

4.90

5.65

31,360

Nov.

854

740

1,280

1,950

1,670

1,140

914

800

1,070

2,690

1,670

1,040

776

615

496

420

350

420

480

303

281

257

*243

240

389

866

878

605

468

420

24,325

811

7.80

8.70

48,250

Dec.

399

368

326

297

278

263

251

234

223

218

2,120

4_,600

1,740

1,200

860

540

450

370

330

380

426

872

923

710

589

514

441

387

350

310

290

21,259

686

6.60

7.60

42,170

Jan.

270

250

280

350

270

250

235

220

210

210

200

210

230

*240

248

248

261

266

269

245

232

224

224

207

190

181

170

168

157

147

140

7,002

226

2.17

2.50

13,890

Feb.

130

135

140

130

125

12O

120

116

114

114

127

230

197

179

*145

140

135

130

125

120

120

117

114

112

111

108

105

104

106

3,769

130

1.25

1.35

7,480

Mar.

203

412

331

277

232

202

195

193

179

161

153

141

141

135

135

147

166

224

312

324

*337

380

441

493

558

617

498

426

415

426

415

9,269

299

2.88

3.31

18,380

Apr.

384

350

334

401

441

387

370

387

453

715

1,060

1,060

1,340

1,730

1,680

1,240

1,O10

1.O20

1,410

2,160

2.980

2,900

2,O9O

1,540

1,360

1,490

1,450

1,190

1,130

1,020

35,082

1,169

11.2

12.55

69,580

May

941

935

941

889

953

1,120

1,360

*1,670

1,880

1,920

1,440

1,070

883

866

1,090

1,740

2,640

3,190

5,260

2,880

2,000

1,900

2,130

1,830

1,420

1,410

1,220

1,030

1,140

1,690

2,040

49,478

1,596

15.3

17.69

98,140

June

1,650

1,230

1,180

1,090

947

855

794

794

843

977

918

767

720

720

720

695

705

736

*883

*849

720

651

617

553

493

469

523

571

531 

461

23,662

789

7.59

8.46

46,930

July

412

401

401

370

373

408

373

373

394

394

356

331

315

286

253

235

217

2O7

200

195

181

168

153

143

137

130

123

116

110 

105

 101

7,961

257

2.47

2.85

15,790

Aug.

"96 98

95

90

86

82

*80

77

74

72

71

69

67

66

65

65

62

60

58

56

55

54

53

53

55

70

61

55

54

53 

49

2,101

67.8

0.652

0.75

4,170

Sept.

49

47

46

45

44

*42

42

42

42

44

92

66

53

48

46

44

42

42

il

42

44

42

41

42

48

43

45

45

70

107

1,486

49.5

0.476

0.53

2,950

Calendar year 1955: Max 4,600 Min 57 Mean 515 Cfsm 4.95 in. 67.17 Ac-ft 372,600

Water year 1955-56: Max 4,6OO Mln 41 Mean 550 Cfsm 5.29 rn . 71.94 Ac-ft 399,100

Note. No"gage-height record Nov. 16-19, Dec. 14-20, Dec. 30 to Jan. 5, Jan. 8-13, Jan.31 to 

Feb. 5, Feb. 15-2O; discharge estimated on basis of weather records and records for nearby stations.
DUWAMISH RIVER BASIN 89

Smay Creek near Lester, Wash.

Location. Lat 47°15'40", long 121°33'50", in SW£ sec. 32, T. 21 N., R. 10 E. , on right 

bank 3| miles upstream from mouth and 4| miles northwest of Lester.

Drainage area. 8.71 sq mi.

Records available. September 1946 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 1,900 ft (from

topographic map). Prior to Dec. 11, 1946, water-stage recorder at site 200 ft upstream 

at datum 4.28 ft higher (destroyed by high water of Dec. 11, 1946).

Average discharge. 10 years, 53.0 cfs (38,370 acre-ft per year).

Extremes.--Maximum discharge during year, 478 cfs Dec. 12 (gage height, 4.53 ft); minimum, 

8.8 cfs Sept. 19-25 (gage height, 2.62 ft).

1946-56: Maximum discharge not determined, probably occurred Dec. 11, 1946, when 

recorder was destroyed by high water; minimum, 4.2 cfs Nov. 21 to Dec. 1, 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.

Revisions. WSP 1216: Drainage area.

Rating tables, water year 1955-56, except period of ice effect (gage 

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

Oct. 1 to Nov. 1O Nov. 11 to Sept. 30

2.6

2.7

2.8

2.9

3.0

8.4

12.9

18.8

91

133

214

323

2.6

2.7

2.8

2.9

3.0 

3.2

8.0

12.4

18.1

58

131

184

247

366

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

Day

1

2

3

4

5

6

7

8

9

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.

11.9

11.4

11.9

19.5

22

21

21

40

105

131

97

76

64

55

49

43

39

*36

34

30

29

28

26

37

49

62

71

150

208

199

131

1,907.7

61.5

7.06

8.15

3,780

Nov.

95

89

140

196

173

129

105

91

135

315

205

136

a96

aSO

a70

a65

*61

61

61

53

49

45

43

45

72

118

118

90

75

68

3,079

103

11.8

13.15

6,110

Dec.

67

60

53

49

45

44

41

38

36

3,4

174

347

167

113

90

76

67

58

54

58

82

134

124

100

82

73

62

57

53

49 

46

2,533

81.7

9.38

10.82

5,020

Jan.

43

41

41

50

48

45

42

40

37

36

34

33

*34

32

34

36

36

36

35

33

32

32

30

28

27

26

24

24

24

23

b22

1,058

34.1

3.92

4.52

2,100

Feb.

b21

b20

b21

b20

b20

b!9.5

18.8

18.1

18.1

17.4

20

24

21

*20

a!9

a!8

a!8

a!7

a!7

a!6

16.2

15.6

15.0

15.0

15.0

14.4

13.9

13.9

13.9

516.8

17.8

2.04

2.21

1,030

Mar.

24

31

25

22

20

18.8

19.5

18.1

17.4

16.2

15.6

15.0

14.4

13.9

13.9

13.9

14.4

15.6

16.8

*18.1

24

28

35

40

45

48

44

40

40

38 

36

781.6

25.2

2.89

3.34

1,550

Apr.

34

32

32

33

32

32

31

32

32

40

52

61

78

103

113

101

87

82

92

134

202

208

164

136

124

129

131

129

127

113

2,696

89.9

10.3

11.51

5,350

May

105

100

94

94

96

103

120

138

*156

170

151

127

109

101

109

146

214

276

291

261

202

190

211

190

162

159

148

134

134

173 

196

4,860

157

18.0

20.75

9,640

June

173

146

141

141

136

136

124

118

118

127

120

105

96

96

96

92

90

90

113

111

*98

87

83

76

70

67

73

78

75

66

3,142

105

12.1

13.42

6,230

July

61

60

60

57

60

66

61

61

66

64

58

53

52

48

41

38

36

35

34

32

31

29

27

25

24

24

22

22

21

20 

19.5

1,307.5

42.2

4.85

5.58

2,590

Aug.

18.8

TsTT

17.4

16.8

16.8

16.2

*15.6

15.6

15.0

14.4

14.4

14.4

13.9

13.9

13.4

12.9

12.9

12.4

12.4

11.9

11.4

11.9

11.9

11.9

12.4

13.4

11.9

11.4

11.4

10.9 

10.9

426.6

13.8

1.58

1.82

846

Sept.

10.9

10.9

10.9

10.4

*10.4

10.0

10.0

10.0

10.0

10.4

15.1

10.9

10.0

9.6

9.6

9.2

9.2

9.2

8.8

9.2

9.2

8.8

8.8

9.2

8.8

9.6

9.2

10.0

14.8

13. 9

307.0

10.2

1.17

1.31

609

Calendar year 1955: Max 347 Mln 10.4 Mean 62.0 Cfsm 7.12 In. 96.65 Ac-ft 44,890

Water year 1955-56: Max 347 Mln 8.8 Mean 61.8 Cfsm 7.10 In. 96.58 Ac-ft 44,860

Peak discharge (base, 200 efs). Oct. 29 (8 

211 cfs (3.89 ft); Nov. 10 (9 a.m.) 349 cfs (4.<: 

(1:30 a.m.) 224 cfs (3.93 ft); May 18, 19 (11 p. 

a.m.) 202 cfs (3.86 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for stations on nearby streams.

b Stage-discharge relation affected by ice.

8 to 9 p.m.) 265 cfs (4.05 ft); Nov. 4 (4 to 6 p.m.) 

(4.26 ft); Dec. 12 (2 a.m.) 478 cfs (4.53 ft); Apr. 2 

1 p.m. to 4 a.m.) 295 cfs (4.13 ft); May 31 (5 to 10
90 DUWAMISH RIVER BASIN

Bear Creek near Eagle Gorge, Wash.

Location. Lat 47°17'00", long 121°48'10" , In NW£ sec. 28, T. 21 N., R. 8 E., on left 

tank a quarter of a mile upstream from mouth and 2| miles northwest of Eagle Gorge.

Drainage area. 4.25 sq ml.

Records available. September 1946 to January 1956 (discontinued).

Gage.--Water-stage recorder. Altitude of gage is 1,000 ft (from topographic map). Prior 

to Sept. 8, 1949, at site 25 ft upstream at same datum.

Average discharge. 9 years (1946-55), 25.7 cfs (18,610 acre-ft per year).

Extremes. Maximum discharge during period October to January, 1,010 cfs Dec. 11 (gage 

height, 4.46 ft), from rating curve extended above 82 cfs on basis of slope-area determination at gage height 4.00 ft; minimum, 5.6 cfs Jan. 31; minimum gage height, 0.60 ft Oct. 3. 6-66.

1946-56: Maximum discharge, that of Dec. 11, 1955; minimum daily, 0.5 cfs Oct. 17, 

18, 1946; minimum gage height, 0.41 ft Sept. 16-24, 1951.

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

No regulation or diversion above station.

Revisions (water years).--WSP 1216: Drainage area. WSP 1246: 1946-47.

Rating table, Oct. 1, 1955, to Jan. 31, 1956 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Dec. 12 to Jan. 9)

0.5 

.6 

.7 

.9

3.5

6.2

10

22

1.2 

1.5 

2.0 

2.6

96

208

373

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

Day

1

2

3

4

5

6

7

8

9

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.

7.6

6.8

878

41

33

20

18.9

23

115

113

56

38

30

25

20

17.6

*15.0

12.5

14.0

12.5

11.5

10.0

9.6

26

123

89

77

96

127

TI3

61

1,370.8

44.2

10.4

12.00

2,720

Nov.

42

64

91

86

63

46

36

32

34

52

46

35

25

21

18

16

15

35

80

60

45

35

40

50

80

150

Too

*79

66

95

1,637

54.6

12.8

14.32

3,250

Dec.

109

70

59

34

27

26

26

25

44

41

352

*248

103

67

52

42

36

29

27

63

91

184

115

68

50

43

38

30

26

22

I6 - 9

2,165.9

69.9

16.4

18.95

4,300

Jan.

17.0

15.0

24

69

55

38

30

22

*18.6

15.0

14.0

19.0

45

34

42

49

46

59

52

50

42

43

52

38

28

22

16.3

14.0

9.6

7.2

5.6

991.3

32.0

7.53

8.67

1,970

Feb. Mar. Apr. May June July Aug. Sept.

Calendar year 1955: Max 352 Min 3.1 Mean 33.7 Cfsm 7.93 In. 107.59 Ac-ft 24,380

Water year 1955-56: Max - Min - Mean - Cfsm - In. - Ac-ft -

* Discharge measurement made on this day.

Note. No gage-height record Nov. 12-27; discharge estimated on basis of recorded range In stage 

and records for nearby stations.
DUWAMISH RIVER BASIN 

Green River near Palmer, Wash.

91

Location. Lat 47°17'40", long 121°49'20" , in SW£NW£ sec. 20, T. 21 N., R. BE., on right 

bank; lj miles upstream from diversion dam and intake of Tacoma water-supply system, 

2 2 miles downstream from North Fork, and 3| miles southeast of Palmer.

Drainage area. 230 sq mi.

Records available. October 1931 to September 1956.

Gage. Water-stage recorder. Datum of gage is 912.6 ft above mean sea level (riverprofile survey). Prior to Nov. 18, 1931, staff gage at same site and datum.

Average discharge. 25 years, 1,083 cfs (784,100 acre-ft per year).

Extremes.--Maximum discharge during year, 18,300 cfs Dec. 11 (gage height, 17.71 ft); minimum, 150 cfs Sept. 21 (gage height, 4.14 ft).

1931-56: Maximum discharge, 23,200 cfs Dec. 11, 1946 (gage height, 19.95 ft, from 

high-water mark in well); minimum, 81 cfs Sept. 4, 5, 1934; minimum gage height, 

3.35 ft Sept. 2, 3, 1945.

Flood in December 1917 reached a stage of about 20 ft from crest head over city of 

Tacoma diversion dam and gage-height relationship curve (discharge, about 25,000 cfs).

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

good. No regulation or diversion above station. Records of suspended sediment loads 

and water temperatures for the water year 1956 are given in WSP 1453.

Revisions (water years) . WSP 1062: 1932-34, 1935(M) , 1938(M). WSP 1216: Drainage area.

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

in cubic feet per second)

Oct. 1 to Dec. 11 Dec. IE to Sept. 30

4.4 

5.0 

6.0 

7.0 

8.0

247

498

937

1,460

2,120

4.1 

5.0 

6.0 

7.0 

8.0

136

505

1,000

1,500

2,120

9.0

10.0

11.5

13.0

15.0

2,950

3,980

5,940

8,370

12,200

Note.--Same as 

following table 

above 8.0 ft. 

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

 total

Mean

Cfsm

In.

Ac-ft

Oct.

259

247 255

477

604

464

431

511

2,040

2,490

1,710

1,320

1,100

942

834

727

*648

587

562

523

490

456

431

626

1,410

1,740

1,620

3,670

5,630

5,670 

3,240

41,714

1,346

5.85

6.74

82,740

Nov.

2,310

2,180

3,560

4,330

3,840

2,800

2,260

1,990

2,080

5,140

3,760

2,500

1,930

1,580

al,250

al.100

a950

al.100

1,600

1,200

1,100

992

924

992

1,980

4,060

3,780

2,720

*2,150

2,110

68,268

2,276

9.90

11.04

135,400

Dec.

2,280

1,970

1,620

1,360

1,220

1,180

1,110

1,050

1,100

1,090

7,710

«12,000

4,580

3,890

2,180

1,820

1,560

1,340

1,220

1,430

1,950

3,640

3,210

2,320

1,880

1,690

1,510

1,340

1,200

1,100 

1,020

72,570

2,341

10.2

11.73

143,900

Jan.

960

900

1,000

1.540

1,490

1,320

1,200

*1,080

985

915

865

855

1,020

970

1,160

,220

,280

,430

,420

,350

,210

,160

1,250

1,110

990

900

815

780

705

650 

550

33,080

1,067

4.64

5.35

65,610

Feb.

514

523

546

500

505

469

460

447

425

425

620

1,160

890

755

640

600

600

575

505

478

460

434

416

407

407

398

381

390

416

-----

15,346

529

2.30

2.48

30,440

Mar.

1,080

1,770

1,360

1,100

895

765

780

825

*720

640

570

536

518

487

487

505

560

760

1,010

1,030

1,260

1,480

1,820

1,910

2,120

2.250

1,780

1,500

1,530

1,560 

1,540

35,128

1,133

4.93

5.68

69,680

Apr.

1,400

1,270

1,180

1,400

1,460

1,300

1,260

1,280

1,380

1,860

2,570

2,530

3,000

3,600

3,510

2,800

2,360

2,290

*2,880

4,020

5,410

5,280

4,040

3,140

2,840

2,980

2,930

2,700

2,650

2,390

77,710

2,590

11.3

12.57

154,100

May

2,180

2,080

2,060

2,010

2,070

2,290

2,660

3,070

3,330

3,500

2,890

2,370

2,010

1,910

2,160

2,950

4,170

5,060

5,220

4,690

3,450

3,200

3,460

3,100

2,600

2,600

2,450

2,110

2,160

2,800 

3,230

89,840

2,898

12.6

14.53

178,200

June

2,880

2,350

2,210

2,130

1,990

1,900

1,830

1,770

1,820

2,020

1,970

»1,680

»1,550

1,540

1,550

1,520

1,590

1,580

1,930

1,960

1,670

1,500

1,400

1,270

1,140

1,100

1,140

1,200

1,140

1.020

50,350

1,678

7.30

8.14

99,870

July

920

885

875

840

880

1,000

880

845

885

885

820

755

710

655

605

541

514

482

464

460

434

416

381

368

359

342

333

312

295

287 

179

18,707

603

2.62

3.02

37,100

Aug.

271

271

*271

263

251

*247

243

235

228

228

224

216

208

208

208

208

204

201

197

193

190

186

182

182

190

216

208

193

193

197 

186

6,698

216

0.939

1.08

13,290

Sept.

178

175

171

171

168

*164

160

160

164

168

224

208

178

171

168

160

157

154

154

157

157

160

154

164

168

190

186

186

251

546

5,372

179

0.778

0.87

10,660

Calendar year 1955: Max 12,000 Min 212 Mean 1,418 Cfsm 6.17 In. 83.70 Ac-ft 1,027,000

Water year 1955-56: Max 12,000 Min 154 Mean 1,407 Cfsm 6.12 In. 83.23 Ac-ft 1,021,000

Peak discharge (base, 6,000 cfs). --Oct. 29 (7:30 p.m.) 8,640 cfs (13.15 ft); Dec. 11 (11:30 p.m.)

18,300 cfs (17.71 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby stations
92 DUWAMISH RIVER BASIN

Newaukum Creek near Black Diamond, Wash.

Location. Lat 47°16'30", long 122°03 I 30", In 3W£ sec. 28, T. 21 N., R. 6 E., on right bank 

three-quarters of a mile upstream from mouth and 3| miles southwest of Black Diamond.

Drainage area. 25.5 sq mi.

Records available.--July 1944 to November 1950, September 1952 to September 1956. 

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

Average discharge.--10 years (1944-50, 1952-56), 67.2 cfs (48,650 acre-ft per year).

Extremes.--Maximum discharge during year, 1,320 cfs Dec. 11 (gage height, 3.43 ft), from 

rating curve extended above 600 cfs; minimum, 18 efs Oct. 2, 3; minimum gage height, 

0.77 ft Aug. 22, Sept. 7, 8.

1944-50, 1952-56; Maximum discharge, 1,820 cfs probably Feb. 17, 1949 (gage 

height, 3.54 ft, from recorded range in stage), from rating curve extended above 

600 cfs; minimum, 8.0 cfs Oct. 13, 14, 1952; minimum gage-height, that of Aug. 22, 

Sept. 7, 8, 1956. BBS. B

Remarks.--Records good except those above 300 cfs and those for period of no gage-height 

record, which are fair. Many small diversions above station for irrigation and 

domestic use. No regulation.

Revisions (water years).--WSP 1286: Drainage area. WSP 1396: 1946(M) , 1949(P).

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

in cubic feet per second)

0.8 

1.0 

1.2

1.5

Oct. 1 to

16

30

52

1.8 

2.1 

2.5

101 3.0

charge, in cubic feet pt

175

280

480

860

Dec.

0.7 

.9 

1.1 

1.3 

1.5

12 to Sept. 30

16 1.8

26 2.1

43 2.4

68 2.7

175

280

420

610

101

second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

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.

18.5

18

21

31

26

21

23

32

86

103

53

42

38

35

32

31

29

28

30

30

*28

27

27

60

*210

*155

93

88

161

151

99

1,826.5

58.9

2.31

2.66

3,620

Nov.

80

187

191

121

93

86

77

86

80

76

69

65

60

56

a54

a53

a52

a!20

313

133

99

84

97

126

324

450

360

*199

178

265

4,234

141

5.53

6.17

8,400

Dec.

349

246

156

121

114

151

166

155

254

186

799

*572

288

170

140

128

126

121

123

405

*370

380

292

208

153

170

184

130

119

110

101

6,987

225

8.82

10.19

13,860

Jan.

96

114

358

420

285

327

304

202

164

143

128

121

133

162

288

164

126

148

*159

151

146

154

224

156

126

110

95

91

88

82

 

5,341

172

6.75

7.79

10,590

Feb.

71

72

71

72

83

82

78

72

70

70

77

85

76

68

62

59

60

60

64

74

93

91

88

97

119

108

91

83

82

------

2,278

78. 6

3.08

3.32

4,520

Mar.

130

*172

181

151

119

108

128

138

128

116

103

97

103

86

80

76

74

74

76

77

105

114

239

205

268

190

138

128

162

148

159

4,073

131

5.14

5.94

8,080

Apr.

130

119

105

112

95

86

97

85

 78

76

74

71

68

66

65

64

62

59

56

56

55

53

52

50

49

48

48

50

50

11

2,126

70.9

2.78

3.10

4,220

May

46

45

44

45

47

47

46

44

43

43

41

50

43

41

39

39

38

37

36

36

36

*34

34

33

33

37

46

37

35

33

33

1,241

40.0

1.57

1.81

2,460

June

34

32

35

38

41

40

41

40

41

53

53

43

40

39

40

40

45

42

65

54

46

42

39

37

37

25

*34

32

32

32

1,222

40.7

1.60

1.78

2,420

July

31

31

31

30

32_

32

30

28

28

28

28

28

28

27

27

26

26

26

25

25

25

26

23

24

24

24

23

23

22

23

23

828

26.7

1.05

1.21

1,640

Aug.

23

24

24

23

23

22

22

22

22

22

22

21

21

22

22

*22

21

21

20

20

20

20

20

20

20

23

22

21

21

21

20

667

21.5

0.843

0.97

1,320

Sept.

21

20

2O

21

20

19.5

19.5

19.5

20

20

25

21

2O

20

20

20

19.5

20

19.5

19.5

19.5

19.5

19.5

19.5

19.5

24

23

21

21

22

613.5

20.4

0.800

0.89

1,220

Calendar year 1955 : Max 799 Min 18 Mean 79.3 Cfsm 3.11 In. 42.21 Ac-ft 57,400

Waber year 1955-56 : Max 799 Min 18 Mean 85.9 Cfsm 3.37 In. 45.83 Ac-ft 62,350

Peak discharge (base, 350 cfs).--Oct. 25 (4:45 p.m.) 380 cfs (2.32 ft); Nov. 2 (5:30 p.m.) 350 cfs 

2.26 ft); Nov. 19 (4 a.m.) 510 cfs (2.55 ft); Nov. 26 (10:30 a.m.) 534 cfs (2.59 ft); Dec. 1 

2:30 p.m.) 456 cfs (2.46 ft); Dec. 11 (6:30 p.m.) 1,320 cfs (3.43 ft); Dec. 20 (7:30 p.m.) 522 cfs 

2.57 ft); Jan. 4 (11 a.m.) 468 cfs (2.48 ft); Jan. 15 (7 a.m.) 370 cfs (2.30 ft); Mar. 23 (4 a.m.)

370 cfs (2.30 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated o basis of records for nearby stations.
DUWAMISH RIVER BASIN 93

Lake Sawyer near Black Diamond, Wash.

Location. Lat 47°20'00", long 122°02'15", in SEij sec. 4, T. 21 N., R. 6 E., on west shore 

about three-eighths of a mile south of lake outlet and 2 miles northwest of Black 

Diamond.

Drainage area.--9.77 sq mi.

Records available.--April 1952 to September 1956.

Gage. Staff gage read once daily. Datum of gage is 512.34 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947.

Extremes.--Maximum gage height observed during year, 7.20 ft Dec. 12; minimum observed, 

5.26 ft Sept. 25, 26.

1952-56: Maximum gage height observed, that of Dec. 12, 1955; minimum observed, 

3.04 ft Dec. 1, 2, 1952.

Remarks.--Lake controlled for elevation by concrete dam at outlet constructed during July 

and August 1952. No known diversion.

Revisions. WSP 1396: Drainage area.

Sage height, in feet, water year October 1955 bo September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

6.10

'sTTo

6.12

6.14

6.14

6.16

5.16

5.24

6.44

6.48

S.44

5.40

6.38

6.36

6.35

S.34

S.32

5.32

5.32

6.32

6.32

5.31

6.30

6.34

6.44

5.50

6.50

5.48

5.54

5.54

5.55

Nov.

5.54

5.58

5.62

5.65

5.54

5.52

5.50

5.58

5.55

5.54

6.52

5.50

5.48

5.48

5.46

5.44

5.44

5.45

5.58

6.62

6.60

5.52

5.64

6.64

6.70

6.84

5.98

'5794

5.92

5.92

 

Dec.

5.90

5.88

6.85

6.84

6.80

5.78

5.75

7.76

5.76

5.75

5.92

7.20

7716

7.00

5.88

5.34

5.80

5.75

5.78

6.90

6.92

5.92

6.94

6.94

6.90

6.88

5.86

5.80

5.78

6.76

5.72

Jan,

6.70

5.68

5.75

6.84

6.94

5.98

7.02

7.00

5.92

6.85

6.75

6.75

6.75

6.76

5.78

6.80

6.76

6.75

5.74

6.75

6.76

5.74

5.74

5.72

6.72

6.70

5.58

6.68

5.66

6.55

6.50

Feb.

5.50

6758

6.55

6.56

5.55

6.55

5.54

5.54

5.52

5.52

5.52

6.52

5.52

5.52

6.52

5.50

6.50

5.50

5.50

6.50

5.50

5.50

5.52

5.50

6.52

6.52

5.52

5.54

5.54

_______

Mar.

5.56

5.50

6.66

6.66

5.58

5.58

6.68

6.68

5.58

5.55

6.65

6.65

5.62

6.60

6.58

6.55

5.55

5.54

6.54

5.54

6.55

5.55

5.55

6.50

6.66

5.70

5.70

5.70

6.70

6.72

S7TS

Apr.

5.72

6.70

6.68

5.66

5.64

5.52

5.50

5.50

5.58

5.56

6.56

5.54

5.54

5.52

5.50

5.50

5.48

5.48

6.48

6.45

5.45

5.45

6.45

5.44

5.44

6.44

5.44

5.42

5.42

6.42

May

6.42

6.42

5.40

5.40

6.40

5.40

5.40

5.40

6.40

6.40

6.38

5.40

6.40

5.38

5.38

6.35

6.36

5.36

5.36

6.34

6.34

5.34

5.34

6.34

6.34

5.34

6.35

6.36

5.36

5.36

5.36

June

5.36

6.36

5.36

5.38

6.38

6.38

5.38

5.40

5.40

6.42

6.40

6.38

6.38

6.38

6.38

6.38

6.38

6.38

6.40

6.40

6.38

6.36

6.34

6.34

6.32

6.30

6.30

6.30

6.28

6728

July

6.28

6.28

6.26

6.26

6.30

6.32

6.32

6.30

6.28

6.28

6.26

6.26

6.24

6.24

6.22

6.20

6.20

6.20

6.18

6.18

6.18

6.16

6.16

6.14

6.14

6.12

6.10

6.08

6.06

6.04

6.04

Aug.

6.02

6702

6.02

6.02

6.02

6.00

6.00

5.98

5.96

5.94

5.94

5.92

5.90

5.90

5.88

5.86

5.86

5.84

5.82

5.80

5.78

5.76

5.74

5.72

5.70

5.70

5.70

5.68

5.66

5.64

5.62

Sept.

5.60

 STSS

5.56

5.54

5.50

5.48

5.46

5.46

5.44

5.42

5.44

5.46

5.44

5.44

5.42

5.40

5.38

5.36

5.34

5.32

5.32

5.30

5.28

5.28

5.26

5.26

5.28

5.30

5.30

5.32

Note.--Gage read once dally between 9:30 and 11 a.n
94 DUWAMISH RIVER BASIN

Covington Creek near Black Diamond, Wash.

Location. Lat 47°20 I 10", long 122°02'40", in NE^-SEl sec. 4, T. 21 N., R. 6 E. , on left 

bank 1,000 ft east of outlet of Lake Sawyer, 3 miles northwest of Black Diamond, and 

5 miles upstream from Big Soos Creek.

Drainage area. 9.77 sq mi.

Records available.--January 1953 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 526.5 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947.

Extremes.--Maximum discharge during year, 210 cfs Dec. 12 (gage height, 4.04 ft); no flow 

Oct. 1-7, July 22 to Sept. 30.

1953-56: Maximum discharge, that of Dec. 12, 1955; no flow at times each year.

Remarks. Records good except those below 2 cfs, which are fair. Natural regulation by 

Lake Sawyer. Probably some small diversions for domestic use.

Rating table, water year 1955-56, except periods of Indefinite stage-discharge

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

(Shifting-control method used Oct. 28 to Dec. 10)

0.3 

.4

.9

0 

.2

.5 

1.0 

1.6

4.1

1.1 

1.5 

2.0 

2.5 

3.0 

4.0

8.4

22

46

114

206

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

Day

1

2

3

4

5

6

7

8

9

1O

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

0

0

0

O

1.4

12

22

17

11

8.4

6.7

5.4

4.4

4.0

3.5

3.8

3.5

*3.0

2.9

2.5

7.6

19.5

28

27

26

32

36

36

323.6

10.4

642

Nov.

32

38

47

*47'42

40

38

38

40

38

38

34

28

26

24

21

22

30

51

55

54

52

53

59

71

94

133

140

T27

118

1,630

54.3

3,230

Dec.

127

139

132

116

*101

98

92

89

92

91

126

198

*19O

152

125

110

101

92

84

96

123

149

159

151

132

120

116

105

94

88

.IP3,668

118

7,280

Jan.

78

76

90

112

132

143

152

146

131

116

103

92

91

86

98

97

93

91

89

87

85

85

89

89

84

79

73

71

68

63

*57.

2,946

95.0

5,840

Feb.

53

50

48

48

49

48

46

43

42

41

42

42

40

39

37

36

40

38

36

36

36

36

36

39

40

42

42

42

43

1,210

41.7

2,400

Mar.

»49

56

66

71

71

68

68

70

69

68

63

59

58

55

51

51

46

44

42

42

44

44

52

56

65

71

70

70

73

75

Ii

1,863

60.1

3,700

Apr.

73

70

67

64

59

56

56

53

48

46

44

42

39

38

36

34

33

32

*30

29

28

28

27

25

25

24

23

23

23

ZZ

1,197

39.9

2,370

May

21

21

21

21

23

21

20

19

18

18.5

17

18.5

17.5

16.5

15.5

14.5

14.5

»13.5

12.5

12.5

12

11.5

11

10.5

10

12

17

14.5

11.5

8.8

8.6

483.4

15.6

959

June

8.1

8.4

10

11

11

11

11.5

11.5

13.5

16.5

17

14.5

11.5

11.5

12

11

11

10

13

13

11

11

10

9.1

7.6

6.9

6.4

5.8

*5.2

4.6

314.6

10.5

624

July

4.6

4.4

4.3

4.4

6.0

lii

6.7

6.0

5.2

4.4

4.0

3.6

3.2

2.9

2.5

2.2

1.8

1.4

1.0

.6

.2

0

<5

0

0

0

0

0

0

0

0

76.8

2.48

152

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 193 Min 0 Mean 34.2 Ao-ft 24,730

Water year 1955-56: Max 198 Min 0 Mean 37.5 Ao-ft 27,200

* Discharge measurement or observation of no flow made on this day.

Note. Indefinite stage-discharge relation Oct. 1-7, July 17 to Aug. 10; discharge estimated on 

basis of stage records for Lake Sawyer.
DUWAMISH RIVER BASIN 95 

Big Soos Creek near Auburn, Wash.

Location. Lat 47°19'00", long 122°08'40", in SE^ sec. 10, T. 21 N., R. 5 E., on right 

bank three-quarters of a mile downstream from Covington Creek, 2 miles upstream from 

mouth, and 4 miles east of Auburn.

Drainage area.--49.4 sq mi (excludes 3.95 sq mi in vicinity of Youngs Lake, flow from 

which has been diverted to Cedar River basin since about 1935).

Records available.--August 1944 to February 1951, August 1951 to April 1956 (discontinued).

Sage. Staff gage read once daily. Altitude of gage is 170 ft (from topographic map). 

Aug. 26, 1944, to Feb. 10, 1951, water-stage recorder at site 700 ft upstream at different datum (gage destroyed by flood of Feb. 10, 1951). Aug. 14, 1951, to Dec. 22, 

1955, water-stage recorder at same site and datum.

Average discharge.--10 years (1944-50, 1951-55), 117 cfs (84,700 acre-ft per year).

Extremes.--Maximum discharge observed during period October to April, 932 cfs Jan. 7 

(gage height, 5.26 ft); minimum discharge, 34 cfs Oct. 1-3 (gage height, 2.34 ft).

1944-56: Maximum discharge observed, 1,570 cfs Feb. 10, 1951 (gage height, 5.57ft); 

minimum discharge, 20 cfs July 23, 24, Sept. 19 to Oct. 12, 1952.

Remarks.--Records fair. Several small diversions for farm use above station. City of 

Seattle diverts between 2 and 5 cfs from Youngs Lake into Little Soos Creek, a tributary, except during periods of high flow.

Revisions. WSP 1246: Drainage area.

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

Day

1

2

3

4

5

6

7

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.

34

3¥

34

42

47

38

41

58

101

107

71

60

54

51

48

44

42

42

42

42

*41

40

40

60

94

101

85

83

96

i||

yts

1,881

60.7

1.23

1.42

3,730

Nov.

 SB- 88

233

218

190

164

154

154

150

147

143

138

127

120

116

111

109

127

239

230

207

188

182

204

262

335

458

467

1ST

399

6,185

206

4.17

4.66

12,270

Dec.

*439

475

431

371

332

335

339

321

363

343

471

784

*652

508

431

391

367

339

310

383

531

575

*630

508

447

383

407

363

328

300

 268

13,125

423

8.56

9.88

26,030

Jan.

268

279

439

676

784

862

932

766

595

459

427

339

375

318

508

518

455

395

*363

335

318

335

415

403

371

321

282

249

262

230 

207

13,486

435

8.81

10.15

26,750

Feb.

196

THF

185

180

193

185

190

172

160

160

160

157

154

136

134

122

T27

131

136

136

147

143

134

147

154

154

164

160

154

------

4,556

157

3.18

3.43

9,040

Mar.

167

170

252

310

276

276

268

367

304

276

268

236

227

199

180

*172

167

157

147

147

172

180

239

268

304

347

296

296

318

339 

347

7,672

247

5.00

5.78

15,220

Apr.

310

282

268

-

-

_

-

-

-

-

_

_

-

-

-

_

_

-

-

-

_

-

-

-

-

_

-

_

_

-

_

_

_

_

-

May June July Aug. Sept.

Calendar year 1955: Max 784 Min 31 Mean 140 Cfsm 2.83 In. 38.53 Ac-ft 101,500

Water year 1955-56: Max - Min - Mean - Cfsm - In. - Ac-ft

scharge [base. 400 cfs). Dec. 2 (5:45 a.m.) 495 cfs (4.50 ft); Dec. 12 (12 m. ) 841 cfs 

Dec. 23 (6 p.m.) 630 cfs (5.16 ft); Jan. 7 (11 a.m.) 932 cfs (5.26 ft); Jan. 16 (5 p.m.)

Peak 

(5.15 

518 cfs (4.55 ft); Jan. 23 (12 m. ) 415 cfs (4.30 ft).

* Discharge measurement made on this day
96 DUWAMISH RIVER BASIN

Green River near Auburn, Wash.

Location. Lat 47°18'15", long 122°12'10", in lot 3, sec. 17, T. 21 N., R. 5 E., on left 

bank lj miles east of Auburn and 2 miles downstream from Big Soos Creek.

Drainage area.--382 sq mi (excludes 4 sq mi in the vicinity of Youngs Lake, flow from 

which has been diverted to Cedar River basin since about 1935).

Records available.--August 1936 to September 1956.

Gage.--Water-stage recorder. Datum of gage is at mean sea level, datum of 1929. Prior 

to Oct. 19, 1936, staff gage at same site and datum.

Average discharge.--20 years, 1,317 cfs (953,500 acre-ft per year).

Extremes.--Maximum discharge during year, 20,300 cfs Dec. 12 (elevation, 67.73 ft); minimum, 142 cfs Sept. 20 (elevation, 54.22 ft).

1936-56: Maximum discharge, 22,000 cfs Dec. 11, 1946 (elevation, 68.16 ft); -minimum, 81 cfs Sept. 23, 1952; minimum elevation, 54.21 ft Sept. 1-3, 1945.

Remarks.--Records excellent. City of Tacoma diverts about 110 cfs from river near

Palmer, several miles above station, for municipal use. Minor regulation on Little 

Soos Creek, a tributary.

Revisions.--WSP 1246: Drainage area.

Rating tables, water year 1955-56 (elevation, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to De Dec. 13 to Sept. 30

54.6 250 59. O 4,520 54.2 155 56.5 1,700

55.0 465 60. O 5,750 54.5 25O 57.0 2,20O

55.5 850 61. 0 7,100 54.7 545 58.0 5,520

56.0 1,280 63. O 10,100 55. O SOS 59. O 4,52O

56.5 1,780 65.0 13,600 55.5 830 60.0 5,750

57.0 2,500 67. O 18,100 56. O 1,24O 61. O 7,1OO

58.0 3,400

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

2O

21

22

23

24

25

26 

27

28

29

50

31

Total

Mean

Ac-ft

Oct.

3OO

270

255

361

621

551

491

53O 

1,53O

2,83O

2,010

1,520 

1,250

1,070

946

83O

75O 

67O

649

*628

586

530

510

600

1,47O

2, ISO 

1,830

*5,540

4,930

6,710

5,910

44,858

1,447

88,970

Nov.

2,76O

2.59O

4,090

4,620

4,480

3,45O

2,770

2,440 

2,210

4,750

4,390

3,090 

2,390

1.98O

1,670

1,490

1,550 

1,590

2,580

1,920

1,660

1,510

1,450

1,500

2,450

4,870 

5.240

4,070

5,310

3,110

85,340

2,845

169,500

Dec.

*3,600

5,300

2,770

2,340

2,110

2,070

2,080

1,920 

2,120

1,980

5,150

*16.400 

7,040

4,520

3,550

2,980

2,640 

2,520

2,130

2,710

5,400

4,960

5,120

5,910

5,190

2,880 

2,720

2,590

2,120

1,980

1;850

108,250

5,491

214,700

Jan.

1,760

1,740

2,160

2,880

5,070

2,920

2,79O

2,43O 

2,180

1,990

1,850

1,740 

1,870

1,86O

2,51O

*2,29O

2,280 

2,520

2,590

2,510

2,110

2,060

2,500

2,110

1,900

1,700 

1,560

1,490

1,450

1,510

1,200

64,510

2,075

127,600

Feb.

1,150

1.O90

1,110

1,070

1,O9O

1,070

1,040

998 

958

926

966

1,520 

1,390

1,210

1,110

1,010

1,050

998

966

954

958

954

910

918

934

942 

910

886

*902~

- -----

29,930

1,052

59,370

Mar.

1,O90

2,540

2,O8O

1,770

1,51O

1,550

1,510

1,48O 

1,55O

1,23O

1,130

1,O80 

1,050

998

958

942

950 

1,05O

1,250

1,350

1,510

1,790

2,260

2,610

2,720

5.000 

2,450

2,140

2,140

2,190

2,250

51,508

1,655

101,800

Apr.

2,06O

1,9OO

1,760

1,790

*1,990

1,830

1,770

1,750 

1,750

2,050

2,840

2,84O 

5,14O

5,75O

5,850

5,210

2,750 

2,500

2,880

5,850

5,150

5.460

4,510

5,640

5,140

5,190 

5,250

2,990

2,960

2,700

87,150

2,905

172,900

May

2,460

2,500

2,270

2,200

2,250

2,410

2,720

5,150 

3,480

3,730

3,560

2,770 

2,320

2.100

2,200

2,830

5,980 

*4,920

5.2OO

5,OOO

5,910

5,500

5,550

5,590

2,820

2,700 

2,710

2,290

2,150

2,620

5,250

94,500

5,042

187,000

June

5,07O

2,55O

2,270

2,200

2.07O

1,990

1,9OO

1,840 

1,85O

2,010

2,150

1,820 

1,620

1,580

1,60O

1,560

1,620 

1,600

1,910

2,070

1,820

1,600

1,470

1,560

1,250

1,150 

*1,150

1,200

1,170

1,090

52,440

1,748

104,000

July

1.O1O

958

934

902

902

X.050

966

902

894

902

886

825 

781

746

711

644

619 

585

565

555

525

505

488

461

459

428 

406

590

380

565

550

21,066

680

41,780

Aug.

545

550

550

555

515

5OO

295

282 

268

264

259

250 

246

242

242

*242

258 

226

214

*210

206

198

194

T94

194

218 

246

226

210

210

202

7,771

251

15,410

Sept.

190

186

178

170

165

156

152

149 

152

160

202

259 

222

194

178

166

163 

160

156

149

146

146

146

146

186

290 

250

206

210

5_60

5,591

186

11,090

Calendar year 1955: Max 16,400 Mln 210 Mean 1,798 Ac-ft 1,502,000

Water year 1955-56: Max 16,400 Ml" 146 Mean 1,782 Ac-ft 1,294,000

Peak discharge (base, 6,000 cfs). Oct. 50 (2 a.m.) 8,600 cfs (62.05 ft); Dec. 12 (8 a.m.) 20,500

cfs (67.73 ft).

* Discharge measurement made on this day.
LAKE WASHINGTON BASIN 97

North Pork Cedar River near Lester, Wash.

Location. Lat 47°19'00", long 121°30'00", in SW£ sec. 11, T. 21 N. ( R. 10 E., on right 

bank 120 ft downstream from falls, 1 mile upstream from confluence with South Pork, and 

1\ miles north of Lester.

Drainage area. 8.81 sq mi.

Records available. October 1944 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 2,320 ft (from topographic map). Prior

Eb Nov. 30, 1951, at site 100 ft upstream and Nov. 30, 1951, to Sept. 23, 1953, at site 

70 ft upstream at datum 2 ft higher than present datum.

Average discharge. 12 years, 72.0 cfs (52,130 acre-ft per year).

Extremes.--Maximum discharge during year, 1,280 cfs Dec. 11 (gage height, 4.20 ft), from 

rating curve extended above 490 cfs on basis of slope-area determination at gage height 

4.95 ft; minimum, 11.0 cfs Sept. 22; minimum gage height, 0.40 ft Oct. 3, Sept. 22. 

1944-56: Maximum discharge, that of Dec. 11, 1955; maximum gage height, 8.9 ft, 

site and datum then in use, probably Jan. 31, 1953 (from high-water mark, backwater 

from logjam); minimum daily discharge, 5.4 cfs Nov. 27-30, 1952.

Revisions. Figures of maximum discharge for the water years 1954 and 1955 have been 

revised to 858 cfs Dec. 9, 1953 (gage height, 3.67 ft) and 754 cfs June 9, 1955 (gage 

height, 3.63 ft); maximum gage height, 3.65 ft June 9, 1955 (drift on control), superseding those published in WSP 1346 and 1396, respectively.

Remarks. Records good. No regulation or diversion above station.

Revisions (water years). WSP 1246: Drainage area. WSP 1286: 1945-47. Revised figures 

of discharge, in cubic feet per second, for high-water periods in the water years 1954 

and 1955, superseding those published in WSP 1346 and 1396, are given herewith:

1953 

Dec. 524

280

283

426

1955 

June 7. 246

349

528

646

1955-Con. 

June 11........ 578

12........ 486

13........ 345

Month

Calendar year 1953. 

Water year 1953-54.

Water year 1954-55.

Cfs-days

4,081

7,967

Maximum

524 

700 

524

646 

646

Minimum

49 

7.5 

11.5

109 

11.8

Mean

132 

76.4 

80.0

266 

71.6

Per square 

mile

15.0 

8.67 

9.08

30.2 

8.13

Runoff

Inches

17.23 

117.68 

123.21

33.63 

110.34

A ore -feet

8,090 

55,290 

57,890

15,800 

51,860

Revised peak discharge. 1955-54; Dec. 9 (2 p.m.) 858 cfs (3.67 ft); Dec. 11 (11:30 p.m.) 810 

cfs (3.64 ft).

1954-55: Feb. 8 (1:50 a.m.) 465 cfs (5.18 ft); June 9 (10:50 p.m.) 754 cfs (5.63 ft); June 21 

(9 p.m.) 460 cfs (s.17 ft).

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

Day

1

2

5

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19

20

21

22

23

24

25

26

27

28

29

30

31

Ibtal

Mean

Cfsm

In.

Ac-ft

Oct.

17.2

16.2

16.6

52

60

48

44

84

251

194

126

127

113

88

72

58

51

45 

42

*39

36

55

30

50

108

94

84

195

'566 402

143

2,965.0

95.6

10.9

12.52

5,880

Nov.

103

98

220

469

254

152

118

115

272

360

188

125

96

79

66

60

52

47 

44

4O

39

56

34

36

49

64

54

46

42

40

3,376

113

12.8

14.25

6,700

Dec .

37

34

32

30

30

28

26

*25

 54 24

406

517

T76

107

79

66

56

b50

b45

41

50

172

129

91

70

61

55

48

44

41

37

2,631

84.9

9.64

11.11

5,220

Jan.

33" 56

51

31

28

28

26

24

23

22

22

22

23

21

21

21

21

21 

*19.8

19.0

18.6

18.2

18.2

17.4

17.1

17.1

16.8

16.8

16.2

15.6

bl5

679.8

21.9

2.49

2.87

1,350

Feb.

b!4.5

b!4

b!5

b!5

15.0

14.4

14.1

13.5

13.8

15.8

18.0

19.4

TeTI

16.2

16.2

b!5

b!5

b!5 

b!4

b!4

14.1

*13.5

13.5

13.5

15.2

12.9

12.6

12.6

12.6

421.2

14.5

1.65

1.78

855

Mar.

16.2

17.4

15.9

14.7

15.5

12.9

13.5

13.2

12.6

12.0

11.8

11.6

11.6

11.4

IT74

11.4

11.6

12.6 

14.1

14.1

17.1

19.0

26

28

31

33

29

26

27

26

24

549.6

17.7

2.01

2.32

1,090

Apr.

22

21

21

24

25

21

21

21

24

55

*41

51

66

95

112

97

80

78 

99

171

256

256

192

151

134

144

145

130

116

103

2,748

91.6

10.4

11.60

5,450

May

93

88

86

86

88

103

138

187

213

221

176

132

109

102

122

200

341

*486 

519

435

268

273

*321

276

221

229

209

179

213

541

*440

6,895

222

25.2

29.11

15,680

June

321

246

256

227

188

171

166

171

200

233

205

166

162

171

176

171

179

198 

260

213

172

164

162

156

122

*158

196

196

167

140

5,673

189

21.5

23.95

11,250

July

154

149

146

136

154

179

155

196

215

T96

172

174

167

156

119

115

115

119 

126

119

104

87

75

68

62

54

48

44

41

59

56

3,678

119

15.5

15.55

7,500

Aug.

34

33

31

30

29

28

26

26

24

*24

25

22

21

21

20

19.4

18.6

18.2 

17.8

17.4

17.1

16.5

16.2

15.9

17.1

17.8

17.1

15.6

15.6

15.0

14.1

661.4

21.3

2.42

2.79

1,310

Sept.

13.5

13.2

13.2

13.2

13.2

13.2

13.2

13.2

15.2

15.5

22

*14.1

12.9

12.5

12.0

11.6

11.4

11^2 

11.2

11.4

11.6

11.4

11.2

11.8

11.6

11.6

11.6

12.9

21

50

407.4

15.6

1.54

1.72

808

Calendar year 1955: Max 646 Min 11.8 Mean 85.5 Cfsm 9.70 In. 131.73 Ac-ft 61,910

Water year 1955-56: Max 519 Min 11.2 Mean 83.8 Cfsm 9.51 In. 129.55 Ac-ft 60,870

Peak discharge (base, 400 cfs). Oct. 29 (5 p.m.) 758 cfs (3.61 ft); Nov. 4 (l£ m. ) 653 cfs (3.49

ft); Nov. 9 (8 p.m.) 778 cfs (3.66 ft); Dec. 11 (10 p.m.) 1,280 cfs (4.20 ft); May 20 (12:50 a.m.)

584 ofs (3.39 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ioe.
98 LAKE WASHINGTON BASIN

South Fork Cedar River near I/ester, Wash.

Location. Lat 47°18'30", long 121°31'00", in SW&TC^ sec. 15, T. 21 N., R. 10 E., on left 

bank about half a mile upstream from confluence with North Fork and 7 miles northwest 

of Lester.

Drainage area.--6.00 sq mi.

Records available. October 1944 to September 1956.

Gage. Water-stage recorder. Concrete control since Aug. 31, 1951. Altitude of gage is 

2",300 ft (from topographic map).

Average discharge. 12 years, 41.3 cfs (29,900 acre-ft per year).

Extremes. Maximum discharge during year, 511 cfs Dec. 11 (gage height, 5.92 ft); minimum,

 4.5 cfs Aug. 31 to Sept. 9, Sept. 23, 24 (gage height, 2.94 ft).

1944-56: Maximum discharge, 878 cfs Jan. 7, 1945 (gage height, 4.86 ft), from 

rating curve extended above 125 cfs; maximum gage height, 6.38 ft Feb. 17, 1949 (backwater from ice and debris); minimum discharge, 1.9 cfs Nov. 27, 28, 1952; minimum gage 

height, 1.25 ft Oct. 17-19, 1946.

Revisions. Figures of maximum discharge for the water years 1953 and 1954 have been 

revised to 520 cfs Jan. 31, 1953 (gage height, 5.95 ft) and 596 cfs Dec. 9, 1953 (gage 

height, 6.19 ft), superseding those published in WSP 1286 and 1346.

Remarks. Records good except those for periods of ice effect, which are fair. No regulation or diversion above station.

Revisions. Revised figures of discharge, in cubic feet per second, for high-water periods in the water years 1953 and 1954, superseding those published in WSP 1286 and 

1346, are given herewith:

1953 

Jan. 22.......... 75

23.......... 306

31.......... 366

1953-Con. 

Feb. 1.. 

Dec. 9..

240

376

252

Month

Water year 1952-53.

Calendar year 1953. 

Water year 1953-54.

Cfs -days

2,876.8 

1,554.6

2,885

Maximum

366 

240 

366

376 

376 

376

Minimum

3.0

13.8 

2.0

35 

3.0 

4.8

Mean

92.8 

55.5 

32.3

93.1 

43.3 

45.6

Per square 

mile

15.5 

9.25 

5.38

15.5 

7.22 

7.60

Runoff

Inches

17.83 

9.64 

72.97

17.88 

97.91 

103.21

Acre-feet

5,71O 

3,080 

23,360

5,720 

31,330 

33,020

Revised peak discharge.--1952-53; Jan. 23 (10:15 a.m.) 380 cfs (5.48 ft); Jan. 31 (3:30 p.m.) 

520 cfs (5.95 ft).

1953-54: Dec. 9 (12 m.) 596 cfs (6.19 ft); Dec. 11 (9:30 p.m.) 370 cfs (5.44 ft); May 18, 19 

(10:30 p.m. to 1 a.m.) 225 cfs (4.80 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

Cfsm

In.

Ac-ft

Oct.

7.9

14T75 

19.7

27

23

21

34

122

118

78

64

55

46

38

33

29

25

23

*21

19.7

18.5

16.8

24

44

54

54

137

205 'IB'0

100

1,653.1

53.3

8.88

10.25

3,280

Nov.

69

58

94 

187

153

98

74

66

89

237

136

88

66

52

43

37

32

30

28

25

23

21

19.7

21

31

40

40

34

30

27

1,948.7

65.0

10.8

12.08

3,870

Dec.

26

23

22 

21

19.7

19.1

17.3

16.3

*15.8

15.3

188

267

TTo

70

55

44

38

34

30

28

34

83

81

60

49

42

36

31

28

26

24

1,553.5

50.1

8.35

9.63

3,080

Jan.

 SI 22

19.1 

19.1

17.3

16.3

15.3

14.8

14.4

13.9

13.4

12.9

12.9

12.9

12.9

13.4

12.9

11.2

*11.2

10.8

10.8

10.4

10.4

9.7

9.3

9.3

b9.3

9.3

9.3

b9

b9

403.5

13.0

2.17

2.50

800

Feb.

b8.5

b8.2

b8 

b7.8

b7.6

7.6

7.6

7.3

7.0

6.7

8.5

10.4

8.5

8.5

b8.4

b8.2

b8

b7.8

7.6

7.3

7.0

*7.0

7.0

7.3

7.0

7.O

6.7

6.7

6.7

-----

221.9

7.65

1.28

1.38

440

Mar.

10.1

9.3

7.9 

7.6

7.3

7.0

7.6

7.3

6.7

6.4

6.4

6.1

6.1

6.1

5.8

5.8

5.8

6.4

7.3

7.0

7.6

8.9

12.0

13.9

16.8

17.1

16.8

15.8

15.8

15* 8 

14.8

296.1

9.55

1.59

1.84

587

Apr.

14.4

13.9

12.9 

TIT*

14.8

13.9

13.9

13.9

14.8

19.1

*24

30

41

61

71

65

58

56

61

94

154

161

US

90

79

81

81

76

72

69

1,688.0

56.3

9.38

10.46

3,350

May

63

60

59 

58

60

66

83

106

126

138

112

87

72

69

78

124

211

*277

290

251

181

174

201

174

144

146

132

110

127

195

227

4,201

136

22.7

26.04

8,330

June

*185

T4T

151 

141

128

118

108

107

120

138

127

101

94

96

95

88

90

98

130

115

95

86

83

73

6_5

*66

81

88

79

67

3,160

105

17.5

19.59

6,270

July

60

62

63 

58

62

*73

68

73

81

7S

68

65

64

56

48

45

44

45

46

46

42

36

33

30

27

24

22

19.5

18.3

17.1

16.0

1,489.9

48.1

8.02

9.23

2,960

Aug.

15.0

T475

13.0

12.2

11.0

10.6

10.2

9.4

*9.1

8.8

8.4

8.0

7.7

7.4

7.4

7.2

6.8

6.6

6.2

6.0

6.0

5.8

5.8

5.5

6.0

6.2

5.5

5.2

5.0

5.0

4.8

246.3

7.95

1.32

1.53

489

Sept.

4.5

475

4.5 

4.5

4.5

4.5

4.5

4.5

4.5

4.8

7.4

*5.0

5.0

5.0

5.0

5.0

5.0

.8

.8

.8

.8

.8

.5

5.0

4.8

4.8

4.8

5.5

10.1

11.0

157.2

5.24

0.873

0.97

312

Calendar year 1955: Max 319 Mln 5.3 Mean 47.7 Cfsm 7.95 In. 108.03 Ac-ft 34,570

Water year 1955-56: Max 290 Mln 4.5 Mean 46.5 Cfsm 7.75 In. 105.50 Ac-ft 33,770

Peak discharge (base, 200 cfs). Oc

cfs (4.86 ft); Nov. 10 (6 a.m.) 279 c

t. 29 (3:30 p.m.) 295 cfs (5.14 ft); Nov. 4 (4 to 6 p.m.) 237 

. fs (5.07 ft); Dec. 11 (10 p.m.) 511 cfs (5.92 ft); May 18 (9 to

11 p.m.) 305 cfs (5.18 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
LAKE WASHINGTON BASIN 99

Cedar River below Bear Creek, near Cedar Falls, Wash.

Location. La t 47°20'40", long 121°33'00", In SE&SE£ sec. 32, T. 22 N., R. 10 E., on right 

bank 500 ft downstream from Bear Creek and 12 miles southeast of Cedar Falls.

Drainage area. 25.4 sq mi.

Records available. October 1945 to September 1956.

Average discharge. 11 years, 184 cfs (133,200 acre-ft per year).

Gage. Water-stage recorder. Altitude of gage is 1,880 ft (from topographic map).

Extremes. Maximum discharge during year, 2,000 cfs Dec. 12 (gage height, 6.47 ft); minimum, 22 cfs Sept. 18-20, 22-24; minimum gage height, 2.76 ft Sept. 23, 24.

1945-56: Maximum discharge, that of Dec. 12, 1955; minimum, 12.5 cfs Nov. 27, 1952; 

minimum gage height, 2.59 ft Oct. 17-19, 1946.

Remarks. Records good except those for periods of ice effect and those for periods Oct. 10 

to Dec. 10, Mar. 25 to Apr. 30, which are fair. No regulation or 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)

2.7 

2.9 

3.1 

3.5

18

32

53

117

4.0 

5.0 

6.0

252

720

1,510

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

Cfsm

In.

Ac-ft

Oct.

37

35

36

94

117

91

86

152

545

505

335

296 

252

201

165

140

123

111

104 

*96

90

83

76

119

236

239

239

565

889

443

7,246

234

9.21

10.61

14,370

Nov.

300

263

540

938

632

424

315

281

484

804

496

323 

239

184

157

138

125

119

115 

104

98

91

88

l7J2~

182

263

201

150

132

123

8,411

280

11.0

12.32

16,680

Dec.

123

113

104

96

93

88

83

80

*78

75

761

1.110 

5l6

327

239

189

167

152

140 

136

194

530

400

281

216

186

162

148

136

125

115

7,163

231

9.09

10.49

14,210

Jan.

106

100

98

108

1(55

98

93

88

86

84

81

81 

88

84

84

88

88

90

*88 

83

80

78

78

72

68

63

6Z

58

54

b50

b45

2,526

81.5

3.21

3.70

5,010

Feb.

b42

b45

b47

b46

45

43

42

41

39

39

52

66 -Se

b51

b48

b45

b46

b46

43 

43

42

»40

39

39

39

38

37

36

3T

1,272

43.9

1.73

1.86

2,520

Mar.

58

70

61

56

49

46

49

46

45

41

40

39

38

36

36

35

36

43

50

51

65

78

117

121

138

143

128

113

123

125

123

2,199

70.9

2.79

3.22

4,360

Apr.

113

104

100

TTf

117

108

108

115

128

157

184

*198 

245

340

378

331

288

281

340 

520

768

792

616

476

424

443

433

414

400

361

9,399

313

12.3

13.76

18 , 640

May

315

308

300

3(35

311

348

438

545

626

660

535

419 

361

344

*392

570

854

1,050

1.100 

1,010

798

774

847

756

632

643

575

496

555

792

917

18,571

599

23.6

27.19

36,840

June

792 63"5

638

580

515

476

452

452

510

580

545

438 

414

424

424

405

410

448

585 

510

414

387

374

315

»277

292

400

414

361

288

13,752

458

18.0

20.14

27,280

July

266

288

288

259

292

365

308

361

400

35?

327

319 

311

245

204

195

189

198

207 

201

178

155

138

130

117

106

95

86

80

74

J59

6,833

220

8.66

10.00

13,550

Aug.

66

62

60

56

54

53

51

49

*48

48

45

44 

42

42

41

40

39

37

36 

35

34

33

32

32

34

38

34

32

32

31

29

1,309

42.2

1.66

1.92

2,600

Sept.

28

23

27

26

25

25

25

25

25

25

44

*28 

26

25

25

24

23

22 & 

24

24

23

22

25

25

25

24

28

50

56

824

27.5

1.08

1.21

1,630

Calendar year 1955: Max 1,160 Mln 28 Mean 211 Cfsra 8.31 In. 112.76 Ac-ft 152,800

Water year 1955-56: Max 1,110 Mln 22 Mean 217 Cfsra 8.54 In. 116.42 Ac-ft 157,700

Peak discharge (base. 1.000 efs).--0ct. 29 (2 p.m.) 1,270 cfs (5.69 ft); Nov. 4 (10 a.m. to 1:30 

p.m.) 1,110 cfs (5.56 ft;} Nov. 9 (8:20 p.m.) 1,080 cfs (5.53 ft); Dec. 12 (12:30 a.m.) 2,000 cfs 

(6.47ft); May 19 (8:30 p.m.) 1,130 cfs (5.59 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.
100 LAKE WASHINGTON BASIN

Cedar River near Cedar Falls, Wash.

Location. Lat 47°22'20", long 121°37'30", in SE^SW^ sec. 23, T. 22 N. , R. 9 E. , on right 

bank 2 miles upstream from Cedar Lake and 8 miles southeast of Cedar Falls.

Drainage area. 41.8 sq mi.

Records available. October 1945 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,560 ft (from topographic map).

Average discharge . 11 years, 285 cfs (206,300 acre-ft per year).

Extremes.--Maximum discharge during year, 5,590 cfs Dec. 11 (gage height, 9.80 ft in well), 

from rating curve extended above 2,000 cfs on basis of slope-area determination at gage 

height 10.16 ft in well, 11.44 ft from outside high-water marks for flood of Dec. 10, 

1956; minimum, 35 cfs Sept. 23, 24 (gage height, 2.07 ft).

1945-56: Maximum discharge, that of Dec. 11, 1955; maximum gage height, 11.4 ft 

Feb. 11, 1951 (backwater from Cedar Lake); minimum discharge, 20 cfs Nov. 30 to Dec. 1, 

1952; minimum gage height, that of Sept. 23, 24, 1956.

Remarks. Records good. No regulation or diversion above station. 

Revisions (water years). WSF 1286: 1946-48, 1951-52.

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

in cubic feet per second)

(Shifting-control method used Dec. 1-1O. Backwater from Cedar Lake 

Dec. 12-18, 22-28, May 17 to June 15, June 19-26, 28, 29, July 1, 

7-10)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 3O

2.3 

3.O

4.0 

5.0 

6.0

54

175

485

950

1,600

2.0 29

2.5 87

3.0 192

4.0 520

5.0 970

6.O 1,600

7.5 2,890

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

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Ac -ft

Oct.

62

59

59 

156

223

171

157

239

790

750

529

450

387

325

271

228

203

182

*171 

155

143

131

120

189

403

426

408

795

1.520

1,170 

682

11,354

366

8.76

10.10

22,52O

Nov.

517

507

820 

1.450

930

641

529

482

656

1,090

731

541

445

366

512

259

239

234

256 

215

198

182

171

224

451

618

517

408

552 

325

14,582

486

11.6

12.97

28,920

Dec.

525

*280

242

210

193

189

173

164

160

157

1,770

2.580

880

592

508

428

564

273

259 

282

454

1,090

840

644

536

475

405

327

276 

225

205

15,480

499

11.9

15.77

50, 700

Jan.

190

177

192 

250

250

211

192

172

158

149

144

146

174

160

174

187

190

*197

190 

172

160

158

162

149

154

121

114

112

106

97

si

5,049

165

5.90

4.49

10,010

Feb.

80

84

89 

87

90

82

81

78

75

76

103

156

125

114

97

94

97

96

87 

84

82

78

*78

78

76

75

74

81

81

2,578

88.9

2.13

2.29

5,110

Mar.

140

195

162 

134

114

102

106

110

99

90

84

8O

80

75

75

75

80

104

129 

129

167

211

517

517

550

324

256

222

250

259

255

5,009

162

3.88

4.46

9,940

Apr.

208

187

177 

200

206

184

187

190

206

*276

564

375

438

548

576

516

445

431

516 

725

1.090

1,090

811

649

596

620

608

588

568

528

14,105

470

11.2

12.55

27,970

May

476

456

448 

452

462

500

588

698

784

835

698

584

520

500

*552

750

1,160

1,520

1.640 

1,500

1,150

*1,060

1,150

1,040

905

89O

855

762

752

*980

1,190

25,857

834

20.0

23.01

51,290

June

1.090

930

900 

860

802

752

734

712

726

802

795

680

652

628

584

496

496

496

616 

667

572

516

496

459

414

400

500

540

480

406

19,179

659

15.5

17.06

58,040

July

578

596

396

568

*596

473

414

448

496

484

417

592

578

320

279

267

259

262

270 

267

241

219

197

184

170

158

144

151

125

117

110

9,154

295

7.06

8.14

18,160

Aug.

104

101

96 

89

86

81

80

*76

75

72

71

68

67

66

64

65

60

57

55 

54

52

51

51

51

55

64

55

51

49

48

15

2,055

66.5

1.59

1.85

4,080

Sept.

44

45

42

41

39

38

38

38

38

40

72

*49

43

40

39

38

57

37

36

56

57

56

55

4O

41

44

44

45

79

110

1,339

44.6

1.07

1.19

2,66O

Calendar year 1955; Max 2,580 Min 47 Mean 339 Cfsm 8.11 In. 110.03 Ac-ft 245,300

Water year 1955-56: Max 2,580 Min 35 Mean 344 Cfsm 8.23 In. 111.86 Ac-ft 249,400

Peak discharge (base. 1,000 cfs). Oct. 29 (5 p.m.) 2.070 cfs (6.60 ft); Hov. 4 (1:30 p.m.) 1.770

cfs (6.22 ft); Nov. 9 (lO:3O a.m.) 1,330 cfs (5.61 ft); Dec. 11 ill p.m.) 5,59O cfs

Dec. 22 (1 p.m.) 1,21O cfs (5.65 ft); Apr. 21 (10 p.m.) 1,220 cfs (5.44 ft); May 19

9.80 ft);

11 to 12 p.m.)

June l).

* Discharge measurement made on this day.
LAKE WASHINGTON BASIN 

Rex River near Cedar Falls, Wash.

101

Location. Lat 47°21'10", long 121°39'50", in NE^NW^ sec. 33, T. 22 N., R. 9 E. , on right

bank 2| miles upstream from mouth and Cedar Lake and 7 miles southeast of Cedar Falls. 

Drainage area. 13.0 sq mi.

Records available. October 1945 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,600 ft (from topographic map). 

Average discharge. 11 years, 106 cfs (76,740 acre-ft per year). 

Extremes. Maximum discharge during year, 2,160 cfs Dec. 11 (gage height, 6.80 ft), from

rating curve extended above 1,050 cfs; minimum, 7.6 cfs Sept. 19, 20, 23 (gage height,

2.58 ft).

1945-56: Maximum discharge, that of Dec. 11, 1955; minimum, 4.3 cfs Nov. 29, 1952

(gage height, 2.43 ft).

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

1062,1286,1316 

1216,1286 

1286 

1346 

1396

Water 

year

1946 

1951 

1953 

1954 

1955

Date

Dec. 28, 1945 

Feb. 11, 1951 

Jan. 23, 1953 

Dec. 9, 1953 

Feb. 8, 1955

Discharge 

(cfs)

1,580 

1,660 

1,640 

1,870 

1,570

Gage height 

(feet)

6.20 

6.27 

6.27 

6.55 

6.24

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

No regulation or diversion above station.

Revisions (water years). WSP 1286: 1946, 1948(P), 1949(M) , 1950(P). Revised figures of 

discharge, in cubic feet per second, for high-water period and supplemental peak discharges In water year 1951, superseding those published in WSP 1216 and 1286, are given 

herewith:

1951 

Feb. 9................. 1,420

10................. 840

11................. 1,090

Month

Water year 1950-51. 

Calendar year 1951.

Cfs-days

5,866

Maximum

1,420 

1,420 

1,420

Minimum

38 

6.0 

6.0

Mean

210 

108 

88.8

Per square 

mile

16.2 

8.31 

6.83

Runoff

Inches

16.78 

112.67 

92.70

Acre-feet

11,640 

78,130 

64,280

Revised peak discharge. 1950-51: Oct. 10 (8:3O a.m.) 1,110 cfs (5.43 ft); Dec. 23 (11:30 a.m.) 

840 cfs (5.22 ft); Feb. 11 (7 a.m.) 1,66O cfs (6.27 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

Cfsm

In.

Ac-ft

Oct.

25

24

28

133 

108

75

76

118

388

324

208

169

131

106

87

74

63

55

*58

50

46

42

39

98

258

224

244

402

546

220

4,799

155

11.9

13.73

9,520

Nov.

151

189

311

m

204

151

138

258

428

254

164

126

100

96

72

64

77

138

98

87

77

69

96

232

306

303

230

184

195

5,517

184

14.2

15.78

10,940

Dec.

*201

151

117

98 

85

80

72

69

67

67

986

756

276

178

133

108

89

72

72

182

318

661

330

201

143

117

94

77

67

60

.55

5,982

193

14.8

17.11

11,870

Calendar year 1955: Max 986

Jan.

50

46

54

T02

82

70

59

52

49

46

46

54

49

74

91

91

*98

82

72

66

69

72

63

55

49

44

43

40

36 

33

1,958

63.2

4.86

5.60

3,880

Feb.

33

35

36

35 

36

34

34

33

32

32

40

60

45

42

35

31

31

32

28

26

*25

25

24

24

23

22

21

22

22

918

31.7

2.44

2.63

1,820

Mar.

48

58

46

38 

32

28

32

32

30

26

25

24

22

21

20

20

22

26

32

35

56

81

138

130

158

143

100

78

83

83

79

1,746

56.3

4.33

4.99

3,460

Apr.

68

59

54

70 

70

62

59

58

65

102

156

161

192

234

217

*178

148

151

201

294

400

362

280

217

201

211

201

198

198

175

5,042

168

12.9

14.42

10,000

May

153

148

143

TIT 

169

181

211

255

276

298

241

192

161

*151

183

258

375

470

480

395

294

294

*326

276

234

255

238

198

230

33G

357

7,923

256

19.7

22.67

15,720

June

282

234

244

227 

227

217

241

241

262

283

262

204

195

198

192

183

192

198

286

244

195

181

167

140

124

135

»175

169

143 

119

6,161

205

15.8

17.63

12,220

July

114

124

117

110 

160

i§l

140

167

178

161

130

128

117

94

83

79

76

79

83

78

65

53

48

44

38

36

32

29

28

OC

to

.24

2,822

91.0

7.00

8.07

5,600

Aug.

23

12

22

20 

19.4

18.8

17.7

17.2

16.7

*15.7

15.2

14.7

14.3

13.8

13.4

12.9

12.5

11.7

11.3

10.9

10.5

9.8

9.8

10.2

13.9

17.2

13.4

11.7

12.9 

11.7

10.9

455.2

14.7

1.13

1.30

903

Sept.

10.5

9.8

9.8

9.5 

9.1

8.8

8.8

8.5

8.8

9.5

*21

11.3

9.5

9.1

8.8

8.2

8.2

7^9

7.9

8.8

9.1

8.5

7.9

15.9

11.7

21

14.3

24

65 

43

414.2

13.8

1.06

1.18

822

Mln 14 Mean 126 Cfsm 9.69 In. 131.14 Ac-ft 90,910

Water year 1955-56: Max 986 Mln 7.9 Mean 120 Cfsm 9.23 In. 125.11 Ac-ft 86,760
102 LAKE WASHINGTON BASIN

Cedar River at Cedar Palls, Wash.

Location. Lat 47 8 25'10", long 121°47'20", in SEv sec. 4, T. 22 N., R. 8 E., on right bank 

three-quarters of a mile downstream from Seattle municipal powerplant at Cedar Palls and 

3 miles downstream from Cedar Lake.

Drainage area. 84.2 sq mi.

Records available. April 1914 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 910 ft (from river-profile map).

Average discharge. 42 years, 303 cfs (219,400 acre-ft per year).

Extremes. Maximum discharge during year. 1,760 cfs May 20 (gage height, 8.57 ft); minimum, 

22 cfs Sept. 23 (gage height, 4.99 ft); minimum daily, 52 cfs Aug. 24-26.

1914-56: Maximum discharge, 6,440 cfs Dec. 22, 1933 (gage height, 11.5 ft); no flow 

part of each day Nov. 25, 1917, Aug. 18, 1923; minimum daily, 2 cfs Sept. 20, 1922.

Remarks. Records excellent except those fop period May to September, which are good, and 

those for periods of no gage-height record, which are fair. All artificially diverted 

water returned to river above station. Some regulation by Cedar Lake for power.

Cooperation. Gage-height record collected in cooperation with city of Seattle. 

Revisions (water years). WSP 722: 1930. WSP 1286: 1934(M), drainage area.

Rating table, water year 1955-56 (gage height, In feet, and discharge. 

In cubic feet per second)

5.2 

5.5 

6.0

41

83

200

6.5 

7.0 

8.5

370

610

1,680

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

236

355

354

358

32O

278

274

274

354

386

378

374

370 

294

362

362

358

358

358

358

354 

354

354

358

386

394

 380

390

410

105

390

10,926

352

21,670

Nov.

378

386

402

410

494

361

578

380

488

666

316

283

470 

675

569

563

730

647

531

101

530 

579

596

356

594

437

519

596

567

611

14,813

494

29,380

Dec.

569

536

T§2" 118

570

552

513

665

*748

623

470

937

1.100 

1,080

942

818

721

694

600

569

6O4 

840

1,030

1,090

876

837

781

674

644

576

478

21,447

692

42,540

Jan.

370

225

503

582

BTl

565

541

455

538

523

528

550

521 

457

348

554

532

546

542

529

304 

500

540

540

530

540

*450

149

75

45?

529

14,569

470

28,900

Feb.

540

515

520

350

300

400

505

493

524

517

2O1

313

425 

366

261

390

420

260

390

370

340 

220

250

270

220

59

38T

404

187

10,416

359

20,660

Mar.

249

291

125

66

225

192

439

*421

163

123

79

*412

286 

185

134

144

291

330

370

250

3 2O

380

460

500

350

490

500

500

510

520

520

9,828

317

19,490

Apr.

487

517

501

461

446

378

486

329

451

344

*415

275

289 

265

271

426

518

527

693

508

479 

176

55?

542

548

498

409

291

386

502

12,980

433

25,750

May

481

497

408

290

386

87

489

255

453

509

56O

291

118 

502

482

619

721

976

1,010

1,520

1.530 

1, 410

1,430

1,420

1,330

1,030

811

1,010

931

754

1,040

23,350

753

46,310

June

*1,070

1.280

888

*997

918

890

899

1,070

780

823

1,120

788

710 

692

903

619

614

814

742

925

890 

812

672

374

641

542

488

476

648

221

23,306

777

46,230

July

197

380

360

180

365

452

189

224

574

663

605

553

562

101

99

222

274

*213

107

97

97 

96

390

94

94

94

92

186

178

90

55

7,920

255

15,710

Aug.

92

182

219

88

88

85

85

85

83

83

83

81

161 

80

67

59

57

56

56

110

56 

54

*53

52

52

52

87

131

266

382

472

3,557

115

7,060

Sept.

718

6ST

665

677

166

179

178

247

227

211

220

268

255 

250

200

188

266

250

238

205

226 

248

234

284

251

227

218

215

212

218

8,623

287

17,100

Calendar year 1955: Max 1,100 Mln 36 Mean 397 Ac-ft 287,200

Water year 1955-56: Max 1,530 Mln 52 Mean 442 Ac-ft 320,800

» Discharge measurement made on this day.

Note. No gage-height record Oct. 27-30, Jan 22-27, Feb. 1-6, 16-25, Mar. 18-31} discharge estimated 

on basis of recorded range In stage and records for nearby stations.
LAKE WASHINGTON BASIN 103

Cedar River near Landsburg, Wash.

Location. Lat 47°23'35", long 121°56'50", in NEijSWi sec. 17, T. 22 N., R. 7 E., on left 

bank 2 miles upstream from Landsburg and intake of Seattle water-supply system, 4^ 

miles east of Maple Valley, 5 miles downstream from Taylor Creek, and 12 miles downstream from Cedar Lake.

Drainage area. 125 sq mi, excludes that of Rock Creek.

Records available. July 1895 to September 1956 (prior to October 1948, flow of Rock Creek 

included).Monthly discharge only for some periods, published in WSP 1316. Published 

as "near Seattle" 1895-98, near Maple Valley" 1902, and as "near Ravensdale" 1898-1901, 

1903-12.

Gage. Water-stage recorder. Altitude of gage is 600 ft (from river-profile map). Prior 

to Oct. 1, 1898, staff gage at site 2£ miles downstream at different datum. Mar. 24, 

1901, to May 15, 1913, staff gage at site 2 miles downstream at datum 535.84 ft above 

mean sea level (levels by city of Seattle). Apr. 30, 1914, to Oct. 22, 1928, waterstage recorder a quarter of a mile downstream at different datum.

Average discharge.--61 years, 690 cfs (499,500 acre-ft per year), unadjusted.

Extremes. Maximum discharge during year, 3,280 cfs Dec. 11 (gage height, 4.77 ft); minimum, 288 cfs Sept. 22,23 (gage height, 1.10 ft).

1895-98, 1901-56: Maximum discharge, 14,200 cfs Nov. 19, 1911 (gage height, 10.0 ft, 

from graph based on gage readings, site and datum then in use), from computation of 

peak flow over dam, peak caused by failure of flashboards at Cedar Lake; minimum observed, 83 cfs Sept. 19, 1898.

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

fair. All diversions except Rock Creek returned to river above station. Rock Creek 

which entered naturally just above station prior to 1932, has been diverted to enter 

river at a point about 2 miles downstream from Seattle municipal water-supply intake. 

Some regulation by Cedar Lake.

Cooperation. Gage-height record collected in cooperation with city of Seattle.

RevislonsTwater years). WSP 313: 1895-98, 1902-9. WSP 1246: Drainage area. WSP 1286: 

I9W. WSP 1316: I896-98(M), 1902-11 (M).

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

1.1 

1.5 

2.0 

2.5

283

460

750

1,100

3.0 

3.5 

4.0

1,480

1,930

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

15

14

l!i

16

17

18

19

20

21 

22

23

24

2!:

26

27

28

29 

30

31

Total

Moan

Ac-ft

Oct.

526

631 

637

698

667

577

577

595

904

960

813

750

724

630

692

679

673

667

667

667

655 

649

649

685

904

918

*841

960

1,040 

1,040

946

23,021

743

45,660

Nov.

862

946 

1,090

J.,060

1,040

922

1,050

888

918

1,200

754

818

814

1,100

990

951

1,140

1,120

1,190

702

968 

1,020

1.100

959

1,350

1,460

1,440

1,370

1,320 

1,370

31,912

1,064

63,300

Dec.

1,460

1,330 

870

832

1,155

1,170

1,110

1,240

*1,370

1,290

1,790

2,270

2,030

1,870

1,670

1,500

1,330

1,350

1,170

1,330

1,450 

1,850

1,980

1,830

1,600

1,510

1,400

1,290

1,220 

1,120

1,030

44,362

1,431

87,990

Jan.

918

818 

1,060

1,320

1,230

1,240

1,180

1,100

1,100

1,100

1,080

1,100

1,140

1,020

1,050

1,160

1,160

1,200

1,190

1,200

909 

1,130

1,200

1,140

1,130

1,130

*1,050

742

595 

9UT

1,000

33,293

1,074

66,040

Feb.

1,000

1,010 

978

832

820

854

954

936

962

940

733

860

840

895

688

832

851

682

872

760

712 

470

510

546

460

451

717

786

643

22,594

779

44,810

Mar.

794

900 

684

595

694

642

844

938

700

570

516 *m

739

592

543

546

662

645

740

622

704 

801

942

1,000

860

1,050

1,040

1,050

1,070 

1,090

1,060

24,407

787

48 , 410

Apr.

1,020

1,050 

1,000

971

952

896

922

858

904

898

*944

816

812

803

772

907

904

960

1,160

978

1,040 

700

984

994

988

944

874

720

794 

906

-----

27,471

916

54,490

May

850

871 

862

616

816

485

800

650

849

909

924

773

483

838

762

984

1,120

1,380

al.500

al,700

al,900 

1,800

1,780

1,770

1,730

1,390

1,180

1,370

1,270 

1,080

1,370

34,812

1,123

69,050

June

1,400

1,610 

1,260

*1,330

1,240

1,210

1,250

1,370

1,160

1,170

1,460

1,180

1,060

1,050

1,250

1,000

984

1,130

1,180

1,280

1,250 

1,210

1,060

714

1,000

872

805

796

889 

610

33,780

1,126

67,000

July

510

686 

661

485

664

718

530

521

802

938

902

853

822

500

405

490

578

470

424

388

388 

383

»646

388

379

374

a440

a520

a450 

a400

a.370

17,085

551

33,890

Aug.

a380

444

487

366

362

362

357

357

357

353

353

349

408

374

345

324

324

320

320

334

352 

320

»316

3T6

316

320

352

388

477 

631

675

11,739

379

23,280

Sept.

974

93"6 

918

972

492

a320

a300

a3"TT5

a360

a330

a340

354

526

512

447

462

480

518

485

460

486 

473

489

521

510

490

475

460

480

475

15,355

512

30,460

Calendar year 1955: Max 2,270 Min 317 Mean 839 Ac-ft 607,300

Water year 1955-56: Max 2,270 Min 300 Mean 874 Ac-ft 634,400

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and records for 

tatlons at Cedar Falls and at Renton.

4t7240 O - 58 -8
104 LAKE WASHINGTON BASIN

Rock Creek near Maple Valley, Wash.

LOG at Ion.- -La t 47°22'50", long 122°01'10", in NEv sec. 22, T. 22 N., R. 6 E., on left bank 

650 ft upstream from mouth and 2 miles southeast of Maple Valley.

Drainage area. --14. 0 sq mi.

Records available. --June 1945 to September 1956.

Gage. Water-stage recorder and woodbox culvert control. Altitude of gage is 425 ft (from 

topographic map). Prior to Mar. 16, 1953, at site 50 ft downstream at datum 0.82 ft 

higher .

Average discharge. --11 years, 22.3 cfs (16,140 acre-ft per year).

Extremes. --Maximum discharge during year, 146 cfs Dec. 12 (gage height, 2.72 ft); minimum, 

6.2 cfs Oct. 1-3, Sept. 3, 5, 6, 17, 21, 25, 26, 28; minimum gage height, 1.36 ft 

Sept. 17, 21, 25, 26, 28.

1945-56: Maximum discharge, 165 cfs Feb. 11, 1951 (gage height, 4.26 ft, datum then 

in use, from recorded range in stage); minimum, 2.7 cfs Dec. 23, 24, 1952; minimum gage 

height, 0.19 ft, Oct. 9-12, 14, 15, 1952, datum then in use.

Remarks . --Records good. No regulation or diversion above. station. 

Revisions. --WSP 1246: Drainage area.

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

discharge, in cubic feet per second)

1.4 

1.7 

2.0

2.7

5.2

20

45

142

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

Day

1

2

3

4

5

6

7

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.

6.2

6.2

6.2

7.4

7.4

7.0

7.8

8.2

11

10.5

9.9

9.4

9.0

9.0

9.0

8.6

8.6

8.6

8.6

8.6

8.6

8.6

8.6

9.9

*11

11

12

12.5

14.5

16 

16

295.9

9.55

0.682

0.79

587

Nov.

16

17.5

20

21

22

23

23

23

23

23

23

22

21

21

21

21

21

22

23

24

25

25

26

27

32

40

49

56

585"8~

826.5

27.6

1.97

2.20

1,640

Dec.

62

72

75

70

*65

61

59

58

57

5_6

68

128

137

TT*

96

88

81

76

71

76

86

98

103

106

98

94

90

86

81

77 

72

2,567

82.8

5.91

6.82

5,090

Jan.

68

67

71

84

98

112

122

122

114

104

97

90

87

81

83

80

80

77

75

*74

71

70

70

70

70

67

66

63

61

59 

5_7_

2,510

81.0

5.79

6.67

4,980

Feb.

54

52

50

49

48

47

45

44

43

42

40

39

38

37

36

36

36

35

34

33

33

32

32

32

32

32

32

32

32

-----

1,127

38.9

2.78

2.99

2,240

Mar.

33

*35

38

43

45

45

46

47

47

47

47

46

45

43

42

41

40

38

37

36

36

36

36

36

38

41

44

45

46

47 

48

1,294

41.7

2.98

3.44

2,570

Apr.

48

48

47

47

46

45

44

42

*41

40

38

37

36

36

35

34

33

32

32

32

31

30

29

28

28

27

26

25

25

24_

1,066

35.5

2.54

2.83

2,110

May

23

23

22

22

21

20

20

20

19

18.5

18.5

18.5

17.5

17.5

17

16.5

16.5

16

16

15

15

*15

14.5

14.5

14

14.5

13.5

13.5

13

13

12^5

530.5

17.1

1.22

1.41

1,050

June

12

12

12

11

IT

11

11

11

11

11

15

13

12.5

13.5

12.5

12.5

12

12

12.5

12

11

11

11

11

11

11

11

11

11

11

350.5

11.7

0.836

0.93

695

July

11

10.5

*10.5

10.5

10.5

10.5

9.9

9.9

9.9

9.9

9.4

9.4

9.4

9.4

9.4

9.0

9.0

8.6

8.6

8.6

8.6

8.6

8.6

8.6

8.6

8.6

8.6

8.6

8.6

8.6

8.2

288. 1

9.29

0.664

0.77

571

Aug.

8.2

8.6

8.6

8.2

8.2

8.2

8.2

8.2

8.2

8.2

7.8

7.8

7.8

7.8

*7.8

7.

7.

7.

7.

7.

7.

7.

7.

7.

7.

7.4

7.0

770

7.0

7.0

7.0

238.6

7.70

0.550

0.63

473

Sept.

.6

.6

. 6

.6

.6

.6

. 6

.6

.0

.0

.4

.0

.0

.0

.0

.0

.0

.0

>. 6

.6

.6

.6

.6

.6

.6

.4

.0

.0

.4

.0

205.2

6.84

0.489

0.55

407

Calendar year 1955: Max 137 Min 6.2 Mean 24.9 Cfsm 1.78 In. 24.16 Ac-ft 18,030

Water year 1955-56: Max 137 Min 6.2 Mean 30.9 Cfsm 2.21 In. 30.03 Ac-ft 22,410

Discharge measurement made on this day.
LAKE WASHINGTON BASIN 105

Cedar River at Renton, Wash.

Location. Lat 47°28'50", long 122°12'10", in NWi sec, 17, T. 23 N., R. 5 E., on left bank 

125 ft downstream from bridge on IF. S. Highway 10 at Renton and 2 miles upstream from 

mouth.

Drainage area.--197 sq ml (includes 4 sq mi in vicinity of Youngs Lake in Big Soos Creek 

basin).

Records available.--March 1901 to July 1903 (fragmentary), September 1906 to December 1907 

(monthly discharge only), August 1945 to September 1956.

Gage. Water-stage recorder. Datum of gage is 15.20 ft above mean sea level, datum of 1929, 

supplementary adjustment of 1947. Prior to Jan. 1, 1908, staff gages within 1 mile of 

present site, at datum 10.67 ft below mean sea level (unadjusted). Aug. 7, 1945, to 

Aug. 15, 1947, water-stage recorder at site 700 ft upstream at datum 20.13 ft above mean 

sea level and Aug. 16, 1947, to Dec. 7, 1950, at datum 19.13 ft above mean sea level, 

datum of 1929, supplementary adjustment of 1947.

Average discharge.--11 years (1945-56), 732 cfs (529,900 acre-ft per year).

Extremes.--Maximum discharge during year, 3,640 cfs Dec. 11 (gage height, 7.37 ft); minimum, 

95 cfs Aug. 24 (gage height, 2.88 ft).

1901-3, 1906-7, 1945-56: Maximum discharge not determined, probably occurred Feb. 11, 

1951, during period of no gage-height record (discharge measurement of 6,640 cfs, gage 

height, 9.48 ft, made Feb. 10, 1951; minumum, 49 cfs Nov. 20, 21, 28, 30, 1952.

Remarks. Records good. Flow partly regulated by Cedar Lake for operation of powerplant. 

More than 250 cfs is diverted at Landsburg at times by the city of Seattle for municipal 

use.

Revisions (water years).--WSP ISA Drainage area. WSP 1316: 1901-2.

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

in cubic feet per second) 

(Shifting-control method used Nov. 5 to Dec. 31)

Oct. 1 to Jan. 25 Jan. 26 to Sept. 30

3.8 403

4. 1 550

4.5 775

5.0 1,140

5.5 1,600

6.0 2,110

7.0 3,290

2.9 

3.2 

3.5 

4.0

100

181

283

510

4.5 800

5.0 1,150

5.5 1,600

6.0 2,110

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

2C

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

412 

508

519

578

610

493

493

545

918

1,160

868

733

693

628

602

616

605

594

588

588

572

545

545

610

888

1,090

794

896

1,040

1,280 

1,040

22,051

711

43,740

Nov.

820 

866

1,440

1,280

1,070

920

836

786

750

*1,040

750

754

624

9TO

824

780

938

964

1,420

1,090

862

970

1,040

994

1,340

1,990

2,060

1,850

1,590

1,540

33,098

1,103

65,650

Dec.

1,820 

1,700

1,270

977

1,040

1,260

1,330

1,430

1,510

1,430

1,800

3,040

2,840

2,580

2,230

1,900

1,600

1,570

1,110

1,550

2,060

2,500

2,780

2,540

2,130

1,850

1,760

*1,540

1,370

1,230 

1,090

54,837

1,769

108,800

Jan.

950 

902

1,230

1,800

1,910

1,890

1,800

1,590

1,460

1,380

1,310

1,270

1,290

1,150

1,300

1,450

1,400

1,400

1,390

1,400

1,150

1,340

1,510

1,440

1,380

*1,350

1,260

990

800

846 

1,090

41,428

1,336

82,170

Feb.

1,070 

1,060

1,030

905

922

854

988

984

982

969

798

817

766

894

696

716

808

726

721

722

720

566

464

505

481

 534 430

736

726

22,590

779

44,810

Mar.

686 

1,030

898

814

774

724

*836

1,080

930

653

614

641

825

656

567

538

554

626

718

662

682

810

1,050

1,240

1,250

1,230

1,240

1,190

1,190

1,230 

1,220

27 , 158

876

53,870

Apr.

1,160 

1,140

1,080

1,020

1,010

942

959

944

846

922

906

845

772

774

744

802

*870

923

1,130

957

1,010

832

830

956

943

874

828

710

668 '527

27,220

907

53,990

May

788 

784

888

678

727

602

554

688

584

774

797

780

460

564

679

734

912

1,150

1,300

1,630

2,000

1,750

1,670

1,580

1,620

1,300

1,070

1,170

1,080

856 

1,070

31,239

1,008

61,960

June

1,220 

1,280

1,240

1,150

*1,080

1,010

1,100

1,120

1,260

1,120

1,390

1,3'20

1,080

952

1,150

1,110

926

928

1,200

1,170

1,240

1,170

994

771

769

824

728

664

652 '§§§"

31,276

1,043

62,040

July

421 

503

524

392

476

481

488

353

436

745

736

686

650

528

272

264

370

326

318

219

215

212

310

*336

200

175

164

161

228

216 

158

11,561

373

22,930

Aug.

152 

155

241

246

158

149

147

144

138

133

130

130

128

195

141

122

115

110

108

105

140

105

102

105

105

120

120

*208

292

459 

469

5,172

167

10,260

Sept.

731 

768

766

806

486

310

302

3T2

334

352

337

368

373

366

340

309

334

378

367

382

395

397

406

454

474

435

435

402

416

435

12,970

432

25,730

Calendar year 1955: Max 3,040 Hin 136 Mean 834 Ac-ft 603,900

Water year 1955-56: Max 3,040 Win 102 Mean 876 Ac-ft 636,000

Discharge measurement made on this day.
106 LAKE WASHINGTON BASIN

May Creek near Renton, Wash. 

Location (revised). Lat 47°31'25", long 122°11 I 45", in SW£SE£ sec. 32, T. 24 N., R. 5 E.,

1 mile upstream from mouth and 2i miles north of Renton. 

Drainage area. 12.5 sq mi (revised).

Records available. June 1945 to October 1950, June 1955 to September 1956. 

Gage.--Water-stage recorder. Altitude of gage is 60 ft (from topographic map). Prior to

June 1955 at different datum.

Average discharge. 6 years, 22.9 cfs (16,580 acre-ft per year).

Extremes. 1955: Maximum discharge during period June to September, 5.4 cfs July 1 (gage 

 height, 1.14 ft); minimum, 2.0 cfs Sept. 4 (gage height, 0.98 ft).

1955-56: Maximum discharge during water year, 240 cfs Dec. 21 (gage height, 2.90ft); 

minimum, 2.3 cfs Oct. 1, 2, Aug. 18, 19; minimum gage height, 0.96 ft Aug. 18, 19.

1945-50, 1955-56: Maximum discharge, 401 cfs Feb. 17, 1949 (gage height, 3.98 ft, 

datum then in use); minimum, 1.9 cfs July 30, 1945, July 10, Sept. 3, 5, 1947. 

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

Some small diversions for irrigation and domestic use. No regulation. 

Revisions (water years). VJSF 1316: 1947(M).

o Sept. 30, 1956 (sage height, In feet, and 

In cubic feet per second)

Dec. 22, 1955, to Sept. 30, 1956

0.97 2.5 1.8 70

1.1 6.3 2.0 97

1.2 11 2.2 126

1.3 16.5 2.4 157

1.4 24 2.7 206

1.6 45

Discharge, In cubic feet per second, 1955

Rating tables, June 16 , 1955,

discharge, J

June

1.0

1.1

1.2

1.4

1.6

16 to

2.3

4.5

8.0

18

33

Dec. 21,

1.8

2.0

2.3

2.6

2.9

1955

52

75

117

171

240

Day

1

2

3

4

5

6

7

8

9

10

June

_

_

-

_

-

-

_

_

_

-

July

5.1

4.2

4.0

4.2

4.0

3.8

3.5

3.2

3.5

3.8

Aug.

4.8

475

3.5

3.2

*3.0

2.8

2.8

2.6

2.6

2.6

Sept.

2.6

2.4

2.4

2.4

2.4

2.4

2.4

*2.6

2.4

2.4

Total

Day

11

12

13

14

15

16

17

18

19

20

June

_

.

_

_

_

*4.0

4.0

4.2

4.0

3.8

July

3.5

3.2

3.0

2.8

*2.8

3.0

2.8

2.6

2.4

2.4

Aug.

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.6

Sept.

2.4

2.3

3.0

3.2

3.0

3.0

3.0

2.8

2.6

2.6

Day

21

22

23

24

25

26

27

28

29

30

31

Runoff In acre -feet ....................................................

* Discharge measurement made on this day.

June

3.5

3.5

4.0

3.8

3.8

4.0

4.2

4.8

4.5

4.5

-

_

_

_

_

-

July

2 4

2 4

2 4

2 4

2 4

3 5

3 8

3 5

3 5

3 5

5 1

102.7

3.31

0.265

0.31

204

Aug.

2.4

2.6

2.8

2.8

2.8

2.6

2.6

2.4

2.4

2.4

2.6

84.5

2.73

0.218

0.25

168

Sept.

*2.4

2.4

2.4

2.3

2.3

2.4

2.8

3.0

2.6

2.4

-

77.3

2.58

0.206

0.23

153

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

Day

1

2

3

4

5

6

7

8

9

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.

2.3 "273

2.4

2.8

2.8

*2.6

3.8

6.4

15.5

13

*7.6

5.7

4.8

4.2

3.8

3.5

3.5

3.5

3.5

3.5

3.5

3.2

3.0

7.2

19.5

*22

18.5

16.5

22 

23

19 5

255.4

8.24

0.659

0.76

507

Nov.

16

27

*60

70

54

40

30

27

23

*21

22

19.5

16.5

15.5

15.5

13

12

20

50

52

47

39

37

44

68

95

116

101

84

1,313.0

43.8

3.50

3.91

2,600

Dec.

92

105

87

68

58

*58

55

56

65

63

96

167

111

76

60

51

46

41

40

ICB

*225

206

163

118

86

75

83

74

62 

55

49

2,699

87.1

6.97

8.03

5,350

Jan.

47

52

91

149

168

170

157

122

97

79

70

60

*53

49

75

93

80

*73

65

61

56

58

73

73

62

53

47

45

41 

35

30

2,384

76.9

6.15

7.09

4,730

Feb.

25

22

20

23

25

25

24

23

21

20

21

22

21

20

18

17

16

17

18

19

*20

18.5

18.5

22

22

22

23

25

26

614.0

21.2

1.70

1.83

1,220

Mar.

28

29

47

55

51

45

55

69

61

51

44

37

34

30

27

24

22

21

19.5

19.5

23

27

41

44

53

58

52

47

53 

55

55

1,277.0

41.2

3.30

3.80

2,530

Apr.

50

*44

41

35

31

28

31

26

23

22

20

18.5

17

16.5

15.5

14.5

13.5

13

12.5

12

11

10.5

9.9

9.9

9.4

8.9

8.4

8.4

8.4 

8.4

577.2

19.2

1.54

1.72

1,140

May

7.9

7.9

7.5

7.5

7.5

7.5

7.1

7.1

6.7

7.1

7.1

7.5

7.1

*6.7

6.7

6.3

6.3

5.9

5.6

5.2

5.2

4.8

4.8

4.8

4.5

4.5

4.5

i*2.

4.2 

4.2

4.2

188.1

6.07

0.486

0.56

373

June

4.2

3.9

4.8

5.2

4.5

4.8

5.6

5.9

7.5

8.9

7.5

6.3

5.9

5.6

5.6

5.2

5.2

5.2

5.9

5.2

4.5

4.2

4.2

4.2

4.2

»3.9

3.9

3.9

3.6 

3.6

153.1

5.10

0.408

0.46

304

July

3.6

3.4

3.4

3.4

3.6

3.4

3.1

2.9

2.9

2.9

2.9

2.9

2.9

2.9

2.9

2.7

2.7

2.7

2.9

2.9

2.9

2.7

3.4

2.9

2.9

2.7

2.7

2.5

2.5 

2 5

2.7

91.4

2.95

0.236

0.27

181

Aug.

2.7

3.4

*3.4

3.1

3.1

2.9

2.9

2.7

2.7

2.7

2.9

2.9

2.7

2.7

2.7

2.7

2.7

2.5

2.5

2.7

2.7

2.7

2.7

2.7

2.9

3.6

3.6

3.1

3.1 

2.9

2.9

89.5

2.89

0.231

0.27

178

Calendar year 1955: Max - Mln - Mean - Cfsm - In. - Ac-ft

Sept.

2.9

2.9

2.9

2.7

2.7

2.7

2.7

2.9

2.9

*2.9

4.2

3.6

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

2.9

2.9

3.1

3.4

3.6

1^3.

5.6

4.5

5.2 

5 2

103.5

3.45

0.276

0.31

205

Water year 1955-56: Max 225 Mln 2.3 Mean 26.6 Cfsm 2.13 In. 29.01 Ac-ft 19,320

Peak discharge (base. 130 cfs). Dec. 12 (6:30 a.m.) 184 cfs (2.66 ft); Dec. 21 (4 p.m.) 240 cfs 

(2.90 ft); Jan. 6 (7 to 9 p.m.) 184 cfs (2.57 ft). » Discharge measurement made on this day.

Note.--No gage-height record Jan. 30 to Feb. 21; discharge estimated on basis of records for 

stations on nearby streams.
LAKE WASHINGTON BASIN 

Mercer Creek near Bellevue, Wash.

107

Location (revised) . Lat 47°36'10", long 122 "10'55", in NW^NWj sec. 4, T. 24N..R. 5 E., 

on right bank 50 ft downstream from State Highway 2-A road crossing, 1 mile southeast 

of Bellevue, and l| miles upstream from mouth. 

Drainage area. 12.0 sq mi (revised).

Records available. June to October 1945, June 1955 to September 1956. 

Gage. Water-stage recorder. Altitude of gage is 20 ft (from topographic map). Prior to

June 1955, at different datum.

Extremes. 1955: Maximum discharge during period June to September. 16 cfs July 1 (gage 

height, 2.12 ft); minimum, 2.2 cfs Aug. 30 (gage height, 1.49 ft).

1955-56: Maximum discharge during water year, 242 cfs Dec. 20 (gage height, 5.08 ft); 

minimum, 4.2 cfs Sept. 5, 6 (gage height, 1.58 ft).

1945, 1955-56: Maximum discharge, that of Dec. 20, 1955; minimum, that of Aue. 30 

1955.

Remarks. Records good. Many small diversions for irrigation and domestic use. No regulation.

Rating tables, June 21, 1955, to Sept. 30, 1956 (gage height. In feet,

and discharge. In cubic feet per second) 

(Shifting-control method used June 21-30, 1955)

June 21 to Dec. 20, 1955 Dec. 21, 1955, to Sept. 30, 1956

1.5

1.6

1.7 

1.9 

2.1

2.4

4.1

6.1

11.5

18.5

3.5

4.2

80

135

1.59

1.7

1.9

2.1

2.3

4.4

7.0

28

2.6 

3.0 

3.5 

4.0 

4.6

81

116

179

Discharge, In cubic feet per second, 1955

Day

1

2

3

4

5

6

7

8

9

10

June

_

-

_

-

_

-

_

_

-

_

July

11

6.6

6.8

7.6

6.1

5.3

4.9

4.9

5.9

7.3

Total

Aug.

5.5

4.9

4.7

*4.3

3.9

3.9

3.7

3.9

3.9

Sept.

4.3

3.9

3.9

3.7

3.7

*3.9

4.1

4.5

4.7

4.5

Day

11

12

13

14

15

16

17

18

19

20

June

_

-

_

-

-

-

_

-

-

_

July

6 1

5 1

4 3

3 9

*3 7

3 9

3 9

3 5

3 5

3 4

Aug.

4.1

4.1

4.1

3.9

3.9

4.1

4.1

4.1

4.1

4.1

Sept.

4.5

4.3

5.9

6.3

5.9

5.7

7.0

5.5

5.1

5.1

Day

21

22

23

24

25

26

27

28

29

30

31

Runoff In acre-feet. ...................................................

June

3.5

3.9

5.3

4.1

4.1

5.5

*5.3

6.8

7.8

6.1

-

_

_

_

_

-

July

3.2

3.2

3.4

3.4

3.5

6.3

5.5

4.9

5.1

5.7

11

162.9

5.25

0.50

323

Aug.

3.9

4.1

4.1

4.1

4.1

4.1

3.9

4.5

3.9

3.9

4.3

132.2

4.26

0.355

0.41

262

Sept.

*5.1

5.1

5.1

4.9

4.7

4.9

5.7

7.6

6.3

5.7

-

151.6

5.05

0.421

0.47

301

Discharge measurement made on this day.

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Ac-ft

Oct.

5.3

5.3

5.3

6.5

9.2

6.3

*14

32

40

31

*13.5

11.5

10.5

9.2

8.3

8.0

8.0

8.0

8.0

7.8

7.8

7.6

7.3

21

54

36

*18

18

»28

21 

15

481.4

15.5

1.29

1.49

955

Nov.

13

32

*80

62

39

43

19

24

19

*28

33

22

16

14.5

14.5

12.5

12

25

64

44

31

24

25

41

64

69

80

53

50

6O

1,113.5

37.1

3.09

3.45

2,210

Dec.

77

62

43

32

33

*47

42

50

48

37

70

82

48

35

30

32

28

23

29

127

*172

150

113

74

60

57

77

54

43

36 

32

1,843

59.5

4.96

5.71

3,660

Jan.

40

49

92

124

147

141

98

68

55

47

43

38

*56

44

88

91

60

55

51

50

48

57

6O

54

43

37

32

31

29

25 

22

1,875

60.5

5.04

5.81

3,720

Feb.

24

24

23

23

30

27

26

24

22

22

22

21

20

20

18

18

18.5

20

24

25

*29

28

27

29

28

39

35

39

32

737.5

25.4

2.12

2.29

1,460

Mar.

28

28

62

66

46

36

47

61

42

34

29

26

28

24

22

21

20

19.5

18.5 22^

36

44

54

44

58

48

40

35

46

45 

40

1,170.0

37.7

3.14

3.63

2,320

Apr.

31

*28

25

27

29

23

30

23

20

19.5

18

17

16.5

16.5

16

16

15

15

14

13.5

13.5

13.5

13.5

13.5

12.5

15

14

13.5

21

15.5

558.5

18.6

1.55

1.73

1,110

May

15

14

13.5

13.5

15.5

13.5

12.5

12

11

11

13.5

15

12

*11

10.5

10

9.9

9.0

9.0

9.0

8.8

9.0

8.5

8.5

8.5

9.0

9.6

8.8

8.5

-rl

340.2

11.0

0.917

1.O5

675

June

8.2

8.0

11

13.5

14

11

13.5

15

25

50

16.5

11.5

10.5

9.9

9.6

9.6

9.0

9.0

13.5

9.9

8.8

8.2

7.8

7.8

7.5

*7.2

7.0

6.8

7TO

7.0

333.3

11.1

0.925

1.03

661

July

6.8

6.5

6.8

6.8

7.8

7.2

6.2

6.2

6.2

6.2

6.2

6.2

6.0

6.O

5.8

5.8

5.5

5.2

5.0

5.0

5.0

5.0

i-8

5.0

5.0

5.0

5.0

5.0

5.0

5.0 

5.2

178.4

5.75

0.479

0.55

354

Aug.

*5.5

6.5

6.8

5^

5.8

5.2

5.2

5.2

5.0

5.0

5.5

5.2

5.2

6.0

6.2

6.2

6.0

5.5

5.2

5.0

5.0

5.0

5.2

5.2

5.5

6.8

6.5

6.0

5.5 

5.0

5.0

172.7

5.57

0.464

0.54

343

Calendar year 1955: Max - Mln - Mean - Cfsm - In. - Ac-ft

Sept.

4.8

4.8

5.0

5.0

4.8

4.4

4.6

4.6

5.O

*5.8

13

10

8.0

7.O

7.0

7.0

6.8

7.0

7.2

7.0

7.0

6.8

6.5

7.0

8.8

18

14.5

9.9

13.5 

12

232.8

7.76

0.647

O.72

462

Water year 1955-56: Max 172 Mln 4.4 Mean 24.7 Cfsm 2.06 in. 28.00 Ac-ft 17,930

Peak discharge (base, 1OO cfs). Nov. 3 (4:30 a.m.) 102 cfs (3.82 ft); Dec. 12 (1 a.m.) lib cfs
108 LAKE WASHINGTON BASIN

Issaquah Creek near Issaquah, Wash.

Location. Lat 47°28'55", long 122"02 "10", In NW£ sec. 15, T. 23 N., R. 6 E., on left 

bank 3^ miles south of Issaquah and 4 miles upstream from East Pork Issaquah Creek.

Drainage area. 36.4 sq mi (revised).

Records available. June 1945 to September 1956.

Gage. Water-stage recorder. Albitude of gage is 210 ft (from topographic map) Prior 

to Oct. 1, 1948, at datum 0.99 ft higher. Oct. 1, 1948, to July 6, 1952, at site 

70 ft upstream at datum 0.41 ft lower.

Average discharge . 11 years, 72.2 cfs (52,270 acre-ft per year).

Extremes. Maximum discharge during year, 1,050 cfs Dec. 11 (gage height, 3.90 ft); minimum, 14.5 cfs Sept. 5, 6 (gage height, 0.75 ft).

1945-56: Maximum discharge, 2,610 cfs Feb. 9 or 10, 1951 (gage height 6 08 ft 

site and datum then in use); minimum, 10.5 cfs Sept. 1, 3, 4, 1952; minimum gage he 

that of Sept. 5, 6, 1956.

Remarks.--Records excellent except those above 400 cfs, which are fair Many small diversions for irrigation and domestic use. No regulation.

Revisions (water years). WSP 1092: 1946. WSP 1286: 1950. WSP 1346: 1953(M) .

eight,

Rating babies, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

0.8 

.9

1.0

1.1 

1.3

Oct. 1 to Dec. 11

1.5 87

1.7 123

2.0 195

2.5 355

3.0 560

Dec. 12 to Sept. 30

0.7 12

.8 17.5

.9 25

1.0 34

1.1 46

1.3 76

1.5 116

1.7 164

2.0 250

2.5 415

3.0 610

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Tbtal

Mean

Cfsm

In.

Ac -ft

Oct.

18.5

18.5

19

34

34

24

30

49

159

141

77

58

48

40

37

34

30

30

30

30

27

27

25

61

156

*152

110

127

176 

159

121

2,082.0

67.2

2.55

2.93

4,130

Nov.

97

156

244

*220

157

130

108

108

97

100

106

88

79

72

65

64

59

100

206

155

134

115

119

159

269

429

393

253

203 

226

4,711

157

5.95

6.64

9,340

Dec .

326

285

198

157

136

143

130

143

172

152

509

*524

265

186

152

139

128

110

107

264

*331

384

310

226

191

186

186

149

130 

114

101

6,534

211

7.99

9.20

12,960

Jan.

112

132

268

390

345

331

298

235

194

162

144

134

162

142

241

223

186

175

175

*180

159

169

214

180

154

134

118

110

101

95 

Si

5,754

186

7.05

8.11

11,410

Feb.

87

85

85

85

§1

89

89

87

85

85

85

89

87

85

80

78

78

78

78

78

80

78

78

78

80

83

83

89

93

2,432

83.9

3.18

3.43

4,820

Mar.

128

*156

186

164

134

118

154

156

134

118

103

97

95

91

89

89

89

91

103

103

132

154

208

191

258

220

169

156

180

191 

183

4,420

143

5.42

6.23

8,770

Apr.

156

144

128

118

107

105

105

95

*87

87

83

78

73

69

65

62

58

57

54

53

51

49

47

46

45

44

42

42

42

11

2,233

74.4

2.82

3.15

4,430

May

40

39

39

39

41

37

36

34

34

38

56

42

38

34

32

32

30

30

30

30

29

29

29

29

29

29

29

29

28

27 

*26

1,024

33.0

1.25

1.44

2,030

June

26

26

30

32

30

29

32

32

38

51

49

37

32

32

38

34

32

32

54

47

39

34

32

32

30

29

28

27

26

26

1,016

33.9

1.28

1.43

2,O20

July

25

25

*25

25

28

29

26

24

23

24

24

23

23

23

22

21

21

20

19.5

19.5

19

19

18

18

18

18

18

17.5

17.5

18

669.0

21.6

0.818

0.94

1,330

Aug.

18

19.5

19.5

18

17.5

17

17

17

17

17

17.5

17

17

17.5

19

18

17.5

17

16.5

*16.5

16.5

15.5

16.5

16.5

17

21

19

17.5

18

17.5°

543.0

17.5

0.663

0.76

1,080

Sept.

16.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

16.5

18

26

20

19

17.5

17.5

17

17

*17

17

17

16.5

16.5

16.5

17

19

32

26

23

28 

28

567.0

18.9

0.716

0.80

1,120

Calendar year 1955: Max 532 Min 17.5 Mean 83.8 Cfsm 3.17 In. 43.10 Ac-ft 60,670

Water year 1955-56: Max 524 Min 15.5 Mean 87.4 Cfsm 3.31 In. 45.06 Ac-ft 63,440

Peak discharge (base, 400 efs). Nov. 26 (8 a.m.) 474 cfs (2.80 ft); Dec. 1 (2:30 p.m.) 413 cfs 

(2.65 ft); Dec. 11 (9 p.m.) 1,050 cfs (3.90 ft); Dec. 22 (2 p.m.) 443 cfs (2.58 ft); Jan. 4 (10 p.m.) 

429 cfs (2.54 ft).

* Discharge measurement made on this day.
LAKE WASHINGTON BASIN 

Saramamish Lake near Redmond, Wash.

109

Location. Lat 47°38'40", long 122 0 06'10", in NE£ sec. 24, T. 25 N., R. 5 E., on west 

shore 0.6 mile upstream from outlet and 1.8 mile south of Redmond.

Drainage area. 97.7 sq mi (revised).

Records available. January 1939 to September 1956.

Gage. Staff gage read once daily between 8:30 and 11:30 a.m. Datum of gage is 24.04 ft 

above mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to 

June 22, 1942, staff gage 1,000 ft downstream at datum 1.00 ft higher. June 22, 1942, 

to Aug. 22, 1951, staff gage at present site at datum 1.00 ft higher.

Extremes. Maximum gage height observed during year, 8.56 ft Jan. 7; minimum observed, 

1.59 ft Sept. 10, 22-24.

1939-56: Maximum gage height observed, 9.40 ft Feb. 12, 1951 (present datum); minimum observed, 1.09 ft Aug. 25-27, 1951.

A stage of 10.83 ft (present datum) was observed on Dec. 22, 1933, from information 

by Corps of Engineers.

Remarks. Many small diversions from tributaries for irrigation and domestic use. Slight 

regulation on tributaries.

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.

1.90

1.88

1.86

1.85

1.83

1.81

TT83

2.03

2.23

2.43

2.51

2.53

2.55

2.54

2.53

2.51

2.49

2.49

2.48

2.47

2.45

2.44

2.43

2.47

2.65

2.83

2.93

3.03

3.11

3.21

3.25

Nov.

.31

.35

.57

.81

.99

.07

.13

.13

.12

.15

.17

.23

.19

.15

.12

.07

.99

.97

.13

.27

.33

.35

.37

.47

.61

.87

.30

.50

5.70

5.80

_______

Dec.

6.02

6.26

6.36

6.40

6.42

6.42

6.40

6.36

6.40

6.40

6.46

6.88

7.12

7.10

7.05

7.00

6.96

6.88

6.86

6.82

7.20

7.64

7.84

8.06

8.06

8.04

8.00

7.90

7.86

7.74

7.58

Jan.

.56

.46

.40

.66

.84

8.24

8.56

8.50

8.44

8.33

8.18

8.03

.96

.88

.80

.86

.82

.77

.72

.66

.56

.50

.56

.54

.46

.40

.30

.15

.04

6.90

6.75

Feb.

6.60

6.45

6.30

6. IS

6.06

5.96

5.88

5.75

5.62

5.52

.44

.37

.28

.20

.12

.04

.92

.84

.75

.69

.64

.61

.57

.55

.54

.53

.52

.55

.57

__ ____ _

_______

Mar.

4.59

4761

4.77

4.92

5.02

5.06

5.14

5.22

5.24

5.24

5.24

5.19

5.14

5.10

5.02

4.94

4.87

4. 84

4.77

4.74

4.75

4.77

4.85

5.04

5.12

5.26

5.35

5.37

5.44

5.50

5.56

Apr.

5.60

5.60

5.58

5.54

5.50

5.45

5.40

5.35

5.28

5.23

5.15

5.06

4.94

4.87

4.79

4.71

4.61

4.54

4.45

4.37

4.31

4.24

4.17

4.09

4.01

3.93

3.87

3.82

3.76

3.70

_______

May

3.65

3.58

3.51

3.47

3.42

3.37

3.33

3.29

3.23

3.19

3.17

3.15

3.13

3.07

3.01

2.97

2.93

2.89

2.86

2.82

2.77

2.73

2.69

2.67

2.63

2.60

2.57

2.55

2.53

2.51

2.49

June

2.47

2.45

2.43

2.44

2.43

2.41

2.39

2.37

2.43

2.47

2.53

"2751

2.50

2.50

2.49

2.48

2.47

2.46

2.47

2.47

2.46

2.46

2.45

2.44

2.43

2.42

2.41

2.39

2.38

2.36

_______

July

2.34

2.32

2.30

2.29

2.28

2. 27

2.27

2.26

2.25

2.24

2.23

2.23

2.23

2.20

2.18

2.17

2.15

2.13

2.11

2.10

2.09

2.08

2.06

2.05

2.04

2.02

1.98

1.95

1.94

1.93

1.90

Aug.

1.89

1.88

1.87

1.86

1.86

1.85

1.84

1.83

1.83

1.83

1.82

1.80

1.79

1.79

1.78

1.78

1.77

1.76

1.76

1.75

1.75

1.75

1.75

1.74

1.72

1.71

1.71

1.71

1.71

1.70

1.68

Sept.

.67

.66

.66

.65

.63

.62

.61

.60

.60

.59

.63

.66

.65

1.65

1.64

1.62

1.61

.61

.61

.60

.60

.59

.59

.59

.63

.67

.70

.70

.70

.71
110 LAKE WASHINGTON BASIN 

Cottage Lake Creek near Redmond, Wash.

Location (revised). Lat 47°44'15", long 122°04'45", In NE^SE^ sec. 18, T. 26 N., R. 6 E.,

on left bank 100 ft downstream from county road bridge, 2 miles upstream from mouth,

and 4| miles northeast of Redmond. 

Drainage area. 11.0 sq mi. 

Records available. June to September 1945, June 1955 to September 1956. Prior to June

1955, at different datum.

Gage.--Water-stage recorder. Altitude of gage is 210 ft (from topographic map). 

Extremes. 1955: Maximum discharge during period June to September, ia.5 cfs July 1 (gage

height, 1.26 ft); minimum, 4.6 cfs Aug. 22 (gage height, 0.79 ft).

1955-56: Maximum discharge during water year, 132 cfs Jan. 6 (2.19 ft); minimum,

4.5 cfs Aug. 19 (gage height, 0.68 ft).

1945, 1955-56: Maximum discharge, that of Jan. 6, 1956; minimum, 4.2 cfs Aug. 15,

17, 1945. 

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

fair. Several s-nall diversions for irrigation and domestic use above station. No

regulation.

Rating tables, June 14, 1955, to Sept. 30, 1956 (gage height, In feet, and 

discharge, in cubic feet per second)

June 14, 1955, to Jan. 5, 1956

46

80

131

0.8 

1.0 

1.2 

1.4

4.8

9.7

17

29

1.6 

1.9 

Z.Z

Jan. 6 to Sept. 30, 1956

0.69 4.8 1.4 41

.8 8.8 1.6 58

1.0 17.5 1.9 91

1.2 28 2.2 133

Discharge, In cubic feet per second, 1955

Day

1

2

3

4

5

6

7

8

9

10

June

_

_

-

-

-

-

-

-

_

-

July

15

11.5

11

11.5

12

12

10

8.8

9.4

10

Aug.

8.8

7.6

6.8

6.6

6.3

6.0

7.3

7.0

5.8

*5.6

Sept.

5.Z

5.0

5.2

5.0

5.2

5.4

6.0

*7.0

7.8

6.8

Day

11

12

13

14

15

16

17

18

19

20

June

_

_

-

*6.0

6.0

6.0

6.0

6.0

6.3

6.0

July

9.1

8.0

7.6

8.0

7.8

7.3

6.6

6.3

6.0

*6.0

Aug.

5.4

5.4

5.4

5.2

5.2

5.0

5.0

5.0

5.0

5.0

Sept.

6.0

5.8

5.8

6.6

7.3

7.0

7.0

6.3

6.6

*7.0

Day

21

22

23

24

25

26

27

28

29

30

31

Runoff In acre-feet ....................................................

June

6.0

5.8

7.3

7.0

7.0

7.6

7.8

8.8

10.5

10.5

-

_

-

July

5.8

5.8

5.8

5.8

7.8

11

9.1

8.3

7.6

7.3

9.1

530

Aug.

5.0

4.8

5.0

5.0

5.2

5.4

5.2

5.0

4.8

5.0

5.0

347

Sept.

7.0

6.6

6.3

5.8

5.6

5.6

6.3

7.0

6.6

5.8

370

Discharge measurement made on this day.

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

5.6

5.6

5.6

5.6

6.3

*6.8

7.6

10

12

13.5

*12

10.5

9.1

7.8

7.3

6.8

6.3

5.8

5.8

5.6

5.4

5.4

5.4

7.8

18.5

16

12.5

11.5

*16.5

15

12.5

282.1

9.10

0.827

0.95

560

Nov.

 11.5

12

21

25

22

20

16

16

19

23

28

20

16

14

12

11

10

12

15

20

17

16

15

20

25

35

37

33

30

33

604.5

20.2

1.84

2.04

1,200

Dec.

36

38

35

30

33

36

37 *38

35

40

50

55

50

43

38

36

33

32

45

70

100

-94 120

80

70

60

52

47

43

39

37

1,552

50.1

4.55

5.25

3,080

Jan.

42

48

60

80

105

*120

TTT

81

59

47

42

38

44

39

47

51

45

43

41

38

37

37

34

30

27

25

23

22

23

22

20

1,481

47.8

4.35

5.01

2,940

Feb.

18

17

16

17

18

19

18

17

16

15

16

16

17

16

14

12

TZ

13

16

16

*19

18

17.5

17

18

20

21

22

20

491.5

16.9

1.54

1.66

975

Mar.

19

19

23

28

25

22

24

24

22

21

19

18.5

19

18

17 .5

15

13

13

12

12

15

19

21

20

22

21

21

21

24

23

22

613.0

19.8

1.80

2.07

1,220

Apr.

20

*19

17.5

22

li

22

22

23

20

18

16.5

16.5

16

15.5

15

14.5

15.5

16.5

14.5

13.5

12.5

12

11.5

11

11

10.5

10

9.2

976

9 . 6

470.4

15.7

1.43

1.59

933

May

9.6

9.6

9.2

10

11

10.5

10

9.6

*9.6

ii

13.5

12.5

11.5

11

9.2

8.0

8.0

7.2

6.8

772

.2

.2

.6

.6

.6

8.0

8.0

8.0

1.6

7.2

7.2

281.2

9.07

0.825

0.95

558

June

7.2

7.2

8.4

11

10.5

10

10.5

12.5

17

17.5

14.5

12

11

10

8.8

10.5

13

12

 12.5

11

10

9.6

8.8

8.0

6.8

6.8

6.8

6.8

6.8

6.8

304.3

10.1

0.918

1.03

604

July

6.8

6.8

6.0

6.4

7.2

7.6

77?

6.8

6.4

6.0

6.0

5.7

5.7

5.7

6.0

6.0

5.7

5.7

5.7

5.7

5.4

574

6.0

6.4

6.0

6.0

6.0

5.7

5.7

5.7

5.7

189.1

6.10

0.555

0.64

375

Aug.

*5.7

5.7

5.7

5.4

8.0

9.6

V3

8.4

7.6

7 .2

7.2

6.8

5.7

5.1

5.1

5.1

5.1

5.1

4.8

F7T

5.1

5.1

5.1

5.1

5.4

6.0

6.0

5.7

5.7

5.7

5.7

188.2

6.07

0.552

0.64

373

Sept.

5.7

5.4

5.4

5.7

5.7

5.4

5.4

5.4

5.4

6.0

*8.0

6.8

6.0

6.0

6.0

6.0

6.0

6.4

6.4

7.2

7.6

6.8

6.8

6.8

8.0

11.5

T575

8.8

8.4

8 .0

203.5

6.78

0.616

0.69

404

Calendar year 1955: Max - Mln - Mean - Cfsm - In. - Ac-ft

Water year 1955-56: Max 120 Mln 4.8 Mean 18.2 Cfsm 1.65 In. 22.52 Ac-ft 13,220

* Discharge measurement made on this day.

Mote. No gage-height record Nov. 5 to Dec. 7, Dec. 9 to Jan. 6, Jan. 31 to Feb. 20; discharge 

estimated on basis of recorded range in stage and records for stations on nearby streams.
LAKE WASHINGTON BASIN 111

Evans Creek above mouth, near Redmond, Wash.

Location.--Lat 47°40'30", long 122°04 I 50", on line between sees. 6 and 7, T. 25 N., R. 

5 E., on right bank 25 ft upstream from county bridge, three-quarters of a mile upstream from mouth, and 2 miles east of Redmond.

Drainage area. 13.0 sq mi.

Records available. June 1955 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 50 ft (from topographic map).

Extremes. 1955: Maximum discharge during period June to September, 20 cfs probably

July 1 (gage height, 1.92 ft, from recorded range in stage); minimum, 6.6 cfs Aug. 29, 

30 (gage height, 1.48 ft).

1955-56: Maximum discharge during water year, 145 cfs Dec. 22 (gage height, 

3.49 ft); minimum, 7.0 cfs Aug. 22, 23 (gage height, 1.47 ft).

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

Several small diversions for irrigation and domestic use. No regulation.

Rating table, Ju e 14, 1955, to Sept. 30, 1956 (gage height, In feet, and 

discharge, In cubic feet per second)

5.3

7.0

9.0

11.5

19

2.9 

3.4

Discharge, In cubic feet per second, 1955

Day

1

2

3

4

5

6

7

8

9

10

June

-

-

-

-

-

-

-

-

-

-

July

16

13

12

12

11

10.5

9.8

9.8

10

11

Aug.

12

9.8

9.0

8.6

8.4

8.0

7.8

7 .8

7 .6

*7 .6

Sept.

.2

.0

.0

.0

.0

.0

.2

*' 4

7.4

7 .4

Day

11

12

13

14

15

16

17

18

19

20

June

-

-

-

*9.6

11

alO.5

alO.5

all

all

alO

July

10.5

9.6

9.0

8.6

8.4

8.4

8.4

8.2

*8 .2

8.0

Aug.

7.6

7.6

7 .6

7.6

7.4

7.4

7.4

7.4

7.6

7 .8

Sept.

7.4

7.2

8.4

9.0

8.8

8.6

9.4

8.8

8.4

*8.4

Day

21

22

23

24

25

26

27

28

29

30

31

Runoff In acre-feet ....................................................

June

a8.8

a8. 8

a!2

all

a 10

a!2

a!2

a!3

a!4

a!2

-

_

_

-

July

7.6

7.6

7.6

7.8

7.8

9.2

9.4

9.0

8.8

9.0

13

593

Aug.

7.4

7 .4

7.6

7.6

7.4

7.4

7.2

7.2

7.0

6.8

7.2

242.2

480

Sept.

8.4

8.4

8.2

8.2

8.2

8.2

8.8

9.8

9.4

9.0

-

481

*Dlscharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of recorded range In stage and records for 

stations on nearby streams.

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

Day

1

2

3

4

5

6

7

8

9

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.

8.8

8T8

8.8

8.8

10.5

*9.4

11

22

27

29

*18.5

14

12.5

11.5

11

10.5

10

10

10

10.5

10.5

10

10

18.5

32

*36-SB

24

22

22

20

495.6

16.0

1.23

1.42

983

Nov.

18.5

19.5

37

42

46

39

33

*34

31

43

57

54

41

33

27

22

19

30

36

33

31

36

36

43

52

61

75

73

70

71

1,243.0

41.4

3.18

3.56

2,470

Dec.

77

79

72

61

53

51

48

*45

48

43

52

67

66

58

51

48

44

40

39

15

*122

137

136

119

97

83

87

74

61

54 

47

2,129

68.7

5.28

6.09

4,220

Jan.

47

50

72

102

129

136

T3?

115

97

81

68

58

60

54

70

76

*66

60

56

53

51

52

58

60

53

48

43

39

35

32

30_

2,083

67.2

5.17

5.96

4,130

Feb.

28

26

25

26

30

29

28

27

26

25

27

28

29

28

27

24

22

24

24

27

30

32

*28

29

31

40

43

43

43

849

29.3

2.25

2.43

1,680

Mar.

43

40

51

58

53

49

49

58

52

49

43

39

39

36

32

31

29

28

26

?6

33

34

40

39

47

48

49

44

51

53 

50

1,319

42.5

3.27

3.77

2,620

Apr.

46

40

*36

36

39

35

36

35

31

29

28

25

24

22

22

20

19.5

18.5

18

18

19

18

17

16.5

16

15

14.5

14.5

20

17.5

746.0

24.9

1.92

2.13

1,480

May

16.5

16

15.5

15.5

16

15

14.5

13.5

*13.5

18

18

23

18

15.5

14

13.5

13

12.5

12.5

12

12

11

11

11

11

11

11.5

11

11

10.5

12

427.0

13.8

1.06

1.22

847

June

10

10

12

13

15

14

14

15

17

18

20 ISis

14

14

14

14

13

*15

13.5

12

11.5

11

11

11

10.5

10.5

10

9.8 'Q~~n

y , o

395.6

13.2

1.02

1.13

785

July

9.6

9.4

9.4

9.4

9.8

9.8

9.4

9.4

9.2

9.4

9.2

9.0

9.0

9.0

8.8

8.8

8.6

8.4

8.2

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8

8

7.8 7 O

/ . O

8

269.4

8.69

0.668

0.77

534

Aug.

8.2

*8.6

F^

8.2

8.0

7.8

7.8

7.S

7.8

7.8

7.6

7.6

7.6

7.8

8.0

8.0

8.0

7.8

7.6

7.6

7.4

7.2

TTz

7.4

7.6

8.6

8.4

8.4

8.2

8 . 0

8.0

244.6

7.89

0.607

0.70

485

Sept.

8.0

8.0

8.0

8.0

7.8

7.8

7.8

8.0

8.0

8.4

*12

11

10

9.8

9.8

9.8

9.8

9.8

9.8

9.8

10

9.8

9.8

9.8

10.5

15.5

15

11.5

12.5

12

297.8

9.93

0.764

0.85

591

Calendar year 1955: Max - Hin - Mean - Cfsm - In. - Ac-ft -

Water year 1955-56: Max 137 Min 7.2 Mean 28.7 Cfsm 2.21 In. 30.03 Ac-ft 20,820

* Discharge measurement made on this day.

Note.--No gage-height record Nov. 13-18, Jan. 29 to Feb. 22, May 31 to June 18, July 27-31; discharge estimated on basis of recorded range in stage and rec.ords for stations on nearby streams.
112 LAKE WASHINGTON BASIN

Bear Creek at Redmond, Wash.

Location.--Lat 47°40'10", long 122°06'30", in SW^NE^ sec. 12, T. 25 N., R. 5 E., on right

bank 300 ft downstream from State Highway 2 crossing, half a mile east of Redmond, and

three-quafters of a mile upstream from mouth. 

Drainage area. 47.5 sq mi.

Records available. June 1945 to November 1950, June 1955 to September 1956. 

Gage. Water-stage recorder. Altitude of gage is 30 ft (from topographic map). Prior to

June 1955, at different datum.

Average discharge.--6 years (1945-50, 1955-56), 86.1 cfs (62,330 acre-ft per year). 

Extremes. 1955: Maximum discharge during period June to September, 101 cfs July 1 (gage

height, 3.09 ft); minimum, 16.5 cfs Sept. 3-5 (gage height, 2.02 ft).

1955-56: Maximum discharge during water year, 560 cfs Dec. 22 (gage height,

5.96 ft); minimum, 18 cfs Sept. 5, 6 (gage height, 2.05 ft).

1945-50, 1955-56: Maximum discharge, 654 cfs Mar. 5, 1950; maximum gage height,

6.53 ft, Jan. 22, 1950, datum then in use; minimum, 13 cfs Aug. 26, 1947 (gage height,

1.88 ft, datum then in use). 

Remarks . - R p c on1,° good. Many small diversions for irrigation and domestic use. Minor

regulation by fish trap half a mile above station.

Revisions (water years) . WSP 1316: 1947(M) , 1949(M) , drainage area. The figure of supplemental peak discharge for the water year 1949 has been revised to 472 cfs Feb. 17

(2 p.m.), superseding figure published in W3P 1152.

Discharge, in cubic feet per .second, 1955

Day

1

2

3

4

5

6

7

8

9

10

June

-

-

-

-

-

_

-

_

-

-

July

87

63

56

54

48

47

44

40

41

45

Aug.

48

39

34

30

28

26

26

27

24

*24

Sept.

22

21

19.5

18.5

18.5

19

20

*22

24

23

Day

11

12

13

14

15

16

17

18

19

20

June

-

-

-

*32

33

32

32

33

33

30

July

43

59

35

32

30

30

29

27

26

*25

Aug .

24

24

24

23

23

22

22

21

22

22

Sept.

22

LO

24

27

C7

26

28

24

22

23

Day

21

22

23

24

25

26

27

28

29

30

31

Runoff In inches ..................................... .................

Runoff In acre -feet .................................. .................

June

29

29

39

33

32

39

39

44

67

54

-

-

July

24

24

24

24

26

37

39

36

34

33

51

1,193

38.5

0.811

0.93

2,370

Aug.

22

22

22

22

22

23

23

22

£2

22

22

25.1

0.528

0.61

1,540

Sept .

*22

22

22

20

20

20

24

32

27

24

-

1,360

Discharge measurement made on this day.

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsro

In.

Ac -ft

Oct.

22

22

22

22

24

*24

29

60

81

90

60

*45

39

34

31

29

27

27

26

27

27

26

26

43

119

*125

90

81

86

84

73

1,521

49.1

1.03

1.19

3,020

Nov.

*65

73

*138

163

154

121

99

106

97

137

171

138

106

89

77

65

59

76

122

114

105

102

106

139

174

196

236

204

198

234

3,864

129

2.72

3.03

7,660

Dec.

280

278

230

187

169

174

159

172

169

150

206

*304

255

196

168

163

150

133

137

314

493

523

527

445

347

303

308

255

207

175

153

7,730

249

5.24

6.05

15,330

Jan.

154

176

288

421

513

519

501

415

318

261

222

191

234

219

296

340

*285

252

228

214

206

222

244

236

196

172

152

140

134

121

109

7,979

257

5.41

6.25

15,830

Feb.

100

94

93

95

109

105

104

98

92

90

96

96

100

97

86

76

82

82

89

99

106

113

*110

110

111

145

153

156

145

3,032

105

2.21

2.37

6,010

Mar.

134

127

172

201

171

152

162

178

154

142

126

117

117

110

103

97

90

86

82

86

114

131

150

135

162

157

154

145

172

170

162

4,259

137

2.88

3.33

8,450

Apr.

146

134

*124

140

172

143

144

142

126

116

109

102

95

89

84

79

76

75

70

67

67

64

61

59

58

54

52

51

68

58

2,825

94.2

1.98

2.21

5,600

May

53

54

53

52

58

52

48

46

45

72

77

76

62

56

51

47

*44

42

40

39

39

38

37

37

37

38

39

38

37

35

5i

1,476

47.6

1.00

1.16

2,930

June

34

34

a38

a50

a49

a48

a49

a 52

a57

aTO

a67

a60

a52

47

47

47

48

45

59

51

46

42

39

38

37

*35

35

34

34

33

1,377

45.9

0.966

1.08

2,730

July

32

31

30

30

33.

33

31

30

29

28

28

27

31

27

26

25

24

24

29

29

26

24

24

24

24

22

22

22

22

20

22

829

26.7

0.562

0.65

1,640

Aug.

22

*24

24

23

24

31

26

24

22

22

22

22

27

25

25

25

24

23

22

22

22

22

22

23

24

29

26

26

25

24

24

746

24.1

0.507

0.58

1,480

Sept.

22

22

22

22

!?.

19.5

20

21

25

24

*42

32

29

27

27

30

27

27

26

27

34

30

27

33

34

50

51

40

41

39

889.5

29.6

0.623

U.70

1,760

Calendar year 1955 : Max - 

Water year 1955-56 : Max 527

Min - 

Min 19

Mean - 

Mean 99.8

Cfsm - In. - Ac-ft - 

Cfsm 2.10 In. 28.60 Ac-ft 72,440

Peak discharge (base. 500 cfs).--Dec. 12 (10 a.m.) 318 cfs (4.72 ft); Dec. 22 (10 to 12 p.m.) 

560 cfs (5.96 ft); Jan. 6 (7 p.m.) 537 cfs (5.86 ft); Jan. 15 (12:3O to 1:30 a.m.) 373 cfs 

(5.04 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and records for 

stations on nearby streams.
LAKE WASHINGTON BASIN 113

Sammamish River near Redmond, Wash.

Location. Lat 47°40'10", long 122°07'50", in NE£ sec. 11, T. 25 N., R. 5 E., on right bank 

at highway crossing, 500 ft downstream from Bear Creek, half a mile west of Redmond, and 

1-f miles downstream from outlet of Sammamish Lake.

Drainage area. 148 sq mi (revised).

Records available. January 1939 to September 1956.

Gage. Water-stage recorder. Datum of gage is 23.08 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Nov. 14, 1946, and May 30 to Nov. 15, 

1950, staff gages at sites 1$ miles or 2 miles upstream on west shore of lake at datum 

approximately 2.0 ft higher. Nov. 14, 1946, to July 8, 1947, water-stage recorder at 

present site at datum 1.52 ft higher.

Average discharge. 17 years, 287 cfs (207,800 acre-ft per year).

Extremes. Maximum discharge during year, 1,340 cfs Jan. 7 (gage height, 8.55 ft); minimum, 

61 cfs Sept. 5 (gage height, 1.17 ft).

1939-56: Maximum discharge, 1,520 cfs Feb. 11, 1951 (gage height, 9.17 ft); minimum, 

43 cfs Aug. 20, 21/24, 1951.

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

Some small diversions from tributaries for irrigation and domestic use. Slight regulation on some tributaries.

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

in cubic feet per second)

1.1

1.3 

1.6

2.0

2.5

110

160

225

3.0 

4.0 

5.5 

7.0

295

430

620

855

1,360

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac -ft

Oct.

92

91

90 "92

96

96

100

138

168

199

178

165

157

152

150

147

146

144

142

140

140

137

135

155

236

275

247

247

261

274

267

5,057

163

1.10

1.27

10,030

Nov.

*261

279

374

420

425

407

392

404

398

427

459

438

413

391

374

372

359

370

425

430

431

431

438

465

512

552

607

621

634

663

13,172

439

2.97

3.31

26,130

Dec.

707

734

732

720

714

718

710

713

718

707

749

851

870

851

831

821

799

773

761

865

1,020

1,120

,.200

,176

,130

,100

,110

*1,080

1,030

980

942

27,226

878

5.93

6.84

54,000

Jan.

925

918

965

1,070

1,210

*1,280

1,350

1,280

1,220

1,160

1,120

1,080

1,070

1,040

1,060

1,090

1,060

1,040

1,010

992

970

962

978

975

945

915

880

847

819

785

748

31,744

1,024

6.92

7.98

62,960

Feb.

719

694

*673

656

649

634

621

607

590

577

568

559

551

538

522

507

500

490

487

482

485

485

477

474

472

492

498

500

496

16 , 003

552

3.73

4.02

31,740

Mar.

490

490

531

564

556

548

*557

584

577

570

560

550

544

535

525

513

503

492

485

481

498

512

539

544

567

582

589

586

604

612

616

16,904

545

3.68

4.25

33,530

Apr.

612

604

597

600

607

590

586

578

562

550

537

524

511

498

486

473

*457

448

435

422

414

404

391

381

369

358

348

338

345

329

14,354

-478

3.23

3.61

28,470

May

317

310

301

294

291

280

273

263

259

280

274

268

256

242

230

220

210

205

200

195

190

185

180

175

175

170

165

165

160

160

155

7,048

227

1.53

1.77

13,980

June

155

155

155

155

*165

154

155

159

187

198

186

169

159

154

152

148

148

143

159

151

144

140

137

133

130

128

124

123

121

118

4,505

150

1.01

1.13

8,940

July

115

TT2

111

109

111

110

107

106

106

106

104

102

104

101

98

*97

97

96

99

98

96

91

89

89

86

86

85

84

80

79

ZB_

3,032

97.8

0.661

0.76

6,010

Aug.

79

80

80

78

77

84

79

76

75

74

74

73

77

75

74

73

72

71

69

68

67

67

67

*68

72

72

70

70

70

68

68

2,267

73.1

0.494

0.57

4,500

Sept.

67

66

65

65

63.

64

65

65

70

70

84

79

77

76

75

77

75

75

74

76

81

77

75

81

82

97

~92 101

97

97

2,308

76.9

0.520

0.58

4,580

Calendar year 1955: Max 1,200 Min 87 Mean 336 Cfsm 2.27 in. 30.86Ac-ft 243,600

Water year 1955-56: Max 1,330 Min 63 Mean 392 Cfsm 2.65 In. 36.09Ac-ft 284,900

* Discharge measurement made on this day.

Note. No gage-height record May 15 to June 5; discharge estimated on baais of recorded range in
114 LAKE WASHINGTON BASIN 

North Creek near Bothell, Wash.

Location. Lat 47°47'30", long 122°11'45", on line between sees. 29 and 32, T. 27 N., R. 

5 E., on left bank 2 miles north of Bothell and 2f miles upstream from mouth.

Drainage area.--23.7 sq ml (revised).

Records available. June 1945 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 70 ft (from topographic map). Apr. 5, 

T950, to Sept. 30, 1951, at datum 0.59 ft higher.

Average discharge. 11 years, 36.9 cfs (26,710 acre-ft per year).

Extremes. Maximum discharge during year, 360 cfs Jan. 6; maximum gage height, 4.95 ft 

Dec. 21; minimum discharge, 6.2 cfs Aug. 22 (gage height, 0.83 ft).

1945-56: Maximum discharge, 680 cfs Mar. 5 or 6, 1950 (gage height, 7.0 ft, present 

datum, from high-water elevation pointed out by local resident); minimum, 1.0 cfs 

Aug. 10, 1946 (gage height, 0.45 ft, present datum).

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

Many small diversions for irrigation and domestic use. Slight regulation for farm use.

Revisions (water years). WSP 1286; 1950(M).

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Jan. 4 to Mar. 6)

1.1 

1.5 

2.0 

2.5

5.3

8.7

18

45

80

120

3.0 

3.5 

4.0 

4.5 

5.0

164

209

255

305

355

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

Day

1

2

3

4

5

6

7

8

9

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.

Ae-ft

Oct.

8.7

8.7

9.1

9.5

11

9.5

28

37

43

62

32

21

16.5

14.5

12.5

12

11.5

11.5

12.5

12

11.5

11

11

20

89

46

32

32

46

39 

30

750.0

24.2

1.02

1.18

1,490

Nov.

24

42

126

108

67

47

37

*51

40

39

36

26

a20

a!8

a!7

a 16

a 15

a30

64

49

40

34

46

88

87

76

86

69

74

156

1,608

53.6

2.26

2.52

3,190

Dec.

171

137

96

74

68

89

75

96

86

76

106

116

85

64

58

59

53

46

*58

242

329

'278 336

218

186

174

191

145

114

93

81

4,OOO

129

5.44

6.28

7,930

Jan.

96

118

174

250

311

331

254

ISO

136

114

106

94

140

122

181

200

150

122

106

97

101

106

120

121

*98

 83

74

69

64

a56 

a50

4,224

136

5.74

6.63

8,380

Feb.

a51

a54

a51

a54

56

54

58

52

48

48

53

84

88

74

a60

a5O

a52

a56

a62

a7O

8O

79

75

71

73

74

77

85

72

1,861

64.2

2.71

2.92

3,690

Mar.

63

61

78

99

 78

67

73

69

63

56

49

46

46

44

4O

38

35

33

31

33

56

65

80

65

74

65

56

58

72

72 

62

1,829

59.0

2.49

2.87

3,630

Apr.

53

54

49

59

53

46

51

49

43

39

36

*32

30

29

28

26

24

23

22

20

2O

19

18

18

17.5

17

16

19

22

18

950.5

31.7

1.34

1.49

1,890

May

19

22

18

18

19.5

17.5

17

16

16

43

36

37

27

22

19

17

15

14.5

13.5

13

12.5

12

11.5

11.5

Ij.

13.5

14

12.5

 11.5

11

11

552.0

17.8

0.751

0.87

1,090

June

11.5

TS

18

31

25

19.5

22

38

79

67

49

35

28

25

29

28

24

22

32

32

26

22

19.5

18

16.5

14.5

14

13.5

14

13

798.0

26.6

1.12

1.25

1,580

July

TT~ 11.5

1O.5

11

11.5

11

10.5

9.5

9.1

9.5

9.5

9.1

8.7

8.7

9.1

*8.3

.9

.9

.6

.2

.6

.2

.2

.2

.2

.2

.2

.2

.2

.2

.6

269.1

8.68

0.366

0.42

534

Aug.

8.7

14

13.

9.9

9.1

8.3

7.9

7.6

7.6

7.6

7.9

7.6

7.6

7.9

1O.5

9.5

9.1

 8.7

7.6

7.2

7.2

7.2

7.6

*7.6

9.5

9.5

8.7

7.9

7.9

7.9

7.6

265.9

8.58

0.362

0.42

527

Sept.

.6

.2

.2

.6

.6

.2

.2

.6

.6

.9

20

11.5

9.5

9.1

9.5

9.5

9.5

9.9

9.9

16

15

1O.5

1O.5

14.5

15

33

20

14.5

14

12.5

348.6

11.6

0.489

0.55

691

Calendar year 1955: Max 336 Mln 5.9 Mean 39.3 Cfsm 1.66 In. 22.53 Ae-ft 28,48O

Water year 1955-56: Max 335 Mln 7.2 Mean 47.7 Cfsm 2.O1 In. 27.40 Ae-ft 34,620

Peak discharge (base. 250 ofs). Dee. 21 (9 p.m.) 358 cfs (4.95 ft); Jan. 6 (10 a.m.) 360 cfs 

(4.90 . .QO ft) fh1 _

Discharge measurement made on this day.

No gage-height record; discharge estimated on basis of records for stations on nearby streams.
LAKE WASHINGTON BASIN 115

Sammamish River at Bothell, Wash.

Location. Lat 47°45'20", long 122°11'35", In NW£SE£ sec. 8, T. 26 N., R. 5 E., on left 

bank In Bothell a quarter of a mile downstream from North Creek and 3i miles upstream 

from mouth.

Drainage area. 209 sq ml (revised).

Records available. October 1939 to September 1956.

Gage.. Water-stage recorder. Datum of gage Is at mean lower low water at Seattle (Corps 

of Engineers benchmark), or 6.54 ft below mean sea level, datum of 1929, supplementary 

adjustment of 1947. Prior to Dec. 28, 1939, staff gages at same site and datum.

Average discharge. 17 years, 365 cfs (264,200 acre-ft per year).

Extremes.--Maximum discharge during year, 1,910 cfs Jan. 6 (gage height, 32.22 ft)- minimum, 90 cfs Aug. 23 (gage height, 23.00 ft).

1939-56: Maximum discharge, that of Jan. 6, 1956, but may have been higher Feb. 12 

or 13, 1951; minimum, 62 cfs Aug. 22, 23, 1951 (gage height, 22.92 ft).

Remarks. Records good. Some small diversions from tributaries for Irrigation and domestic 

use. Slight regulation on some tributaries.

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

.. in cubic feet per second)

Oct. 1 to Jan. 6 Jan. 7 to Sept. 30

23.3

24.0

25.0

26.0

107

192

335

502

27.0

29.0

32.0

1,080

1,840

24.0

25.0

26.0

90

204

344

509

27.0

29.0

32.1

690

1,080

1,870

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30 

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

114

112

111

TTT

124

122

146

213

246

300

247

215

202

193

187

183

179

176

179

175

174

172

170 

198

586

375

316

316

354

346 

320

6,668

215

1.03

1.19

13,230

Nov.

308

349

629

644

574

502

462

*495

476

507

549

500

452

418

394

394

385

416

551

524

507

493

520 

620

692

703

785

766

798

900

16,313

544

2.60

2.90

32,360

Dec.

1,040

1,020

940

890

866

912

888

920

916

880

966

1,080

1,040

1,000

982

980

956

920

*916

1,200

1,520

1,650

1,690 

1,630

1,570

1,510

1,520

1,460

1,370

1,280

1,190

35, 702

1,152

5.51

6.35

70,810

Jan.

1,160

1,170

1,280

1,440

1,660

1,830

1.860

1,740

1,640

1,540

1,460

1,380

1,400

1,360

1,410

1,500

1,450

1,380

1,310

1,260

1,210

1,220

1,240 

1,260

*1,190

1,120

1,060

1,020

984

934

 Sgg41,350

1,334

6.38

7.36

82,020

Feb.

842

806

785

770

777

760

747

718

688

671

669

703

707

667

617

586

583

572

58T

590

626

637

621 

606

613

646

664

684

649

19,585

675

3.23

3.49

38,850

Mar.

626

612

713

815

*745

700

724

762

726

698

673

655

651

637

615

599

583

568

554

554

621

667

743 

709

749

753

743

736

796

798

791

21,316

688

3.29

3.79

42,280

Apr.

758

747

728

753

777

728

726

718

684

657

639

*617

599

585

570

552

532

514

502

484

471

455

440 

432

415

404

393

389

404

335

17,058

569

2.72

3.04

33,830

May

372

372

353

344

344

332

323

311

305

575

372

354

326

304

289

278

268

261

254

251

243

236

227 

222

216

216

216

209

*203

192

8,764

283

1.35

1.56

17,380

June

191

189

198

235

234

208

216

238

344

329

300

247

229

218

218

214

208

201

231

224

207

196

190 

183

179

173

169

166

167

i§2.

6,464

215

1.03

1.15

12,820

July

157

153

151

150

154

155

147

144

143

143

143

140

139

135

134

129

*125

122

122

122

121

118

114 

114

114

112

111

110

107

105

106

4,040

130

0.622

0.72

8,010

Aug.

107

109

117

112

107

106

106

103

99

99

99

99

99

99

103

106

105

102

100

99

96

93

92 

*94

97

103

106

106

104

103

101

3,171

102

0.488

0.56

6,290

Sept.

100

100

98

97

96

93

92

92

92

96

134

122

113

110

110

110

110

110

110

118

128

117

112 

118

124

167

163

139

135

138

3,444

115

0.550

0.61

6,830

Calendar year 1955: Max 1,690 Min 105 Mean 428 Cfsm 2.05 In. 27.78 Ac-ft 309,600

Water year 1955-56: Max 1,860 Min 92 Mean 502 Cfsm 2.40 In. 32.72 Ac-ft 364,700

Discharge measurement made on this day.
116 SNOHOMISH RIVER BASIN

South Fork Skykomish River near Index, Wash.

Location. Lat 47°48'20", long 121°32'40", in !ffi£ sec. 29, T. 27 N., R. 10 E., on right 

bank 600 ft upstream from Sunset Falls, 1 mile southeast of Index, and 2 miles upstream 

from confluence with North Fork. Discharge measurements made about 2 miles upstream 

from gage.

Drainage area. 355 sq mi.

Records available.--October 190: 

G

to September 1905, April 1911 to September 1956.

Gage 

li

e_. Water-stage recorder. Datum of gage is 574.80 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Mar. 15, 1934, at site 300 ft downstream. Oct. 6, 1902, to Sept. 30, 1905, staff gage at datum 0.39 ft higher and 

Apr. 26, 1911, to Sept. 30, 1913, at datum 1 ft higher. Oct. 1, 1913, to Sept. 13, 

1920, staff gage, Sept. 14, 1920, to Oct. 1, 1921, water-stage recorder, and Jan. 23, 

1922, to Mar. 14, 1934, staff gage, at present datum.

Average discharge. 48 years, 2,384 cfs (1,726,000 acre-ft per year).

Extremes.--Maximum discharge during year, 27,900 cfs Nov. 4 (gage height, 17.40 ft), from 

rating curve extended above 18,000 cfs; minimum, 449 cfs Sept. 20 (gage height, 1.63ft).

1902-5, 1911-56: Maximum discharge, 55,000 cfs Dec. 12, 1921 (gage height, 22.8 ft, 

from high-water marks, site then in use), from rating curve extended above 14.000 cfs 

by logarithmic plotting; minimum, 165 cfs Nov. 29, 1952 (gage height, 1.35 ft).

Flood in 1897 reached a stage of about 5 ft higher than that of Dec. 12, 1921 (discharge, about 70,000 cfs).

Remarks. Records excellent except those below 1,000 cfs, which are good. Small .diversion for domestic use. No regulation.

Revisions (water years). WSP 512: 1903-5, 1911-14. WSP 572: Drainage area. WSP 792: 

T934~: WSP 1286: T903-5(M) , 1912(M) , 1914-29(M) , 1931-34(M).

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

in cubic feet per second)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 3O

2.2 

3.0 

4.0 

5.0 

6.0

485

965

1,660

2,480

3,420

7.0

9.0

11.0

13.0

16.0

4,490

7,150

10,500

15,000

23,400

1.6 

2.0 

2.5 

3.0 

4.0 

5.0

44O

570

780

1,060

1,750

2,580

6.0

7.0

9.0

11.0

13.0

3,530

4,620

7,270

10.5OO

15,000

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

Tbtal

Mean

Cfsm

In.

Ac-fh

Oct.

546

507

502

1,630

2,030

1,300

1,110

2,330

7,180

4,730

3,080

3,250

2,970

2,610

2,460

2,020

1,790

1,620

1,500

1,390

1,250

1,140

1,040

2,710

15. 500

7,06O

4,660

6,090

10,000

8, O20

5,050

104,875

3,383

9.53

10.99

208,000

Nov.

3,690

*3,690

14,600

25.300

1O,8OO

6,540

5,090

4,690

7,000

14,400

7,420

4,860

3,670

3,040

2,570

2,270

2,040

1,980

1,990

1,810

1,700

1,560

1.480

1,790

3,580

4,000

3,180

2,870

2,500

2,550

150,660

5,022

14.1

15.78

298,800

Dec.

2,820

2,28O

1,920

1,660

1,530

1,470

1,470

1,420

1,390

1.530

10,500

14.800

5,880

3,920

3,060

2,590

2,250

1,960

1,830

2,440

4,030

8,570

6,110

3,980

3,110

2,720

2,380

2,080

1,850

1,670

1,540

104,560

3,373

9.50

10.95

207,400

Jan.

1,450

1,350

1,410

*1,890

2,140

1,930

1,750

1,540

1,390

1,260

1,210

1,190

1,530

1,520

1,560

1,810

2,010

1,8OO

1,710

1,550

1,400

1,460

1,660

1,510

1,290

1,130

1,020

982

904

84O

745

44,941

1,450

4.08

4.71

89,140

Feb.

745

805

750

703

685

661

653

633

621

625

846

1.580

1,160

970

825

*775

805

735

681

653

633

613

602

605

621

617

613

685

735

21,635

746

2.10

2.27

42,910

Mar.

1,240

2,100

1,980

1,450

1,120

940

940

958

860

770

698

669

649

629

617

617

629

721

952

1,070

1,200

1,760

2,850

2,960

2,780

5. OOP

2,270

1,890

1,840

2,020

2,120

44,299

1,429

4.03

4.64

87,870

Apr.

1,830

1,620

1.500

1,930

1,970

1,630

1,520

1,570

1,7OO

2,190

3,180

3,800

4,380

5,220

5,300

*4,430

3,700

3,580

4,480

6,240

8,350

8.650

7,050

5,820

5,400

5,640

5,380

4,720

4,280

3,860

120,920

4,031

11.4

12.67

239,800

May

3,690

3,850

3,650

5.540

3,580

3,970

4,760

6,060

6,980

7,640

6,360

4,990

4,170

*3,870

4,430

6,220

8,790

11,700

15.400

12,800

9,290

8,690

9,540

8,760

7,200

7,700

6,700

5,680

6,640

9,140

11,000

214,790

6,92?

19.5

22.50

426,000

June

10.100

7,860

8,160

7,640

6,530

5,510

5,86O

5,790

7,060

7,740

6,990

5,490

5,120

5,480

6,080

5,600

5,250

5,710

7,740

6,700

5,560

5,140

4,970

4,370

*3.880

4,100

5,490

5,910

5,150

4,250

181,030

6,034

17.0

18.96

559,100

July

4,190

4,700

4,68O

4,200

4,860

5,140

4,600

5,270

6,140

6.250

5,540

5,700

5,800

4,940

5,920

5,870

5,850

4,120

4,400

4,440

4,120

5,590

5,190

5,040

2,810

2,490

2,210

1,970

1,770

1,640

1.540

124,980

4,052

11.4

15.09

247,900

Aug.

1.450

1,520

1,250

1,140

1,110

*1,150

1,150

1,100

1,080

1,050

1,020

1,010

1,010

l.OOO

1,010

982

880

820

810

815

795

775

755

730

73O

976

810

730

681 

649

617

29,385

948

2.67

3.08

58,280

Sept.

591

566

542

518

494

479

473

475

475

488

805

750

574

524

494

479

467

*458

455

504

1,210

775

609

892

1,370

1,680

1,810

1,510

2,770

5.540

26,555

885

2.49

2.78

52,670

Calendar year 1955: Max 23,300 Min 465 Mean 2,978 Cfsm 8.39 In. 113.87 Ac-ft 2,156,OOO

Water year 1955-56: Max 23.3OO Min 455 Mean 3,193 Cfsm 8.99 In. 122.42 Ac-ft 2,318,OOO

Peak discharge (base, 10.000 efa). Oct. 25 (9:4O a.m.) 17,200 cfs (15.83 ft); Oct. 29 (1:4O p.m.) 

16,200 cfs (13.48 ft)j Nov. 4 (9:15 a.m.) 27,900 cfs (17.40 ft); Nov. 10 (2:5O a.m.) 18,500 cfs 

(14.26 ft); Dec. 11 (ll:3O p.m.) 27,700 cfs (l7.34 ft); Dec. 22 (5 p.m.) 10 2OO cfs (10.82 ft); 

May 20 (3 a.m.) 14,600 cfs (12.86 ft); June 1 (l a.m.) 11,7OO cfs (11.58 ft).

* Discharge measurement made on this day.
SNOHOMISH RIVER BASIN 117

Skykomish River near Gold Bar, Wash.

Location.--Lat 47°50 I 15", long 121°40'00", in SW£ sec. 9, T. 27 N., R. 9 E., on right bank 

2 miles southeast of Gold Bar and 5 miles upstream from Wallace River and Startup.

Drainage area. 535 sq mi.

Records available. September 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 209.26 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947.

Average discharge. 28 years, 3,841 cfs (2,781,000 acre-ft per year).

Extremes. Maximum discharge during year, 46,900 cfs Dec. 11 (gage height, 16.13 ft); 

minimum daily, 814 cfs Sept. 19.

1928-56: Maximum discharge, 88,700 cfs Dec. 21, 1933 (gage height, 21.3 ft), from 

rating curve extended above 32,000 cfs by logarithmic plotting; minimum, 315 cfs 

Nov. 29, 1952; minimum gage height, 2.73 ft Dec. 1, 1936.

Remarks. Records excellent except those for periods of shifting control or no gage-height 

record, which are good. No regulation or diversion above station.

Revisions (water years) . WSP 1316: 1932-35(M) , 1944(M).

Rating tables, water year 1955-56, except period of shifting control (gage 

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

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

3.5 

4.0 

4.5 

5.0

745

1,200

1,770

2,420

6.O 

7.0 

8.O 

9.0

3,940

5,820

8,320

11,300

Note. Same as following 

table above 9.0 ft.

3.6 

4.O 

4.5

5.0 

5.5 

6.0 

7.0

750

1,080

1,570

2,180

2,900

3,700

5,700

8.0

9.0

10.0

11.0

13.0

15.0

8.3OO 

11,300 

14,800 

18,800 

28,300 

39,700

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

50

31

Obtal

Mean

Cfsm

In.

Ac-ft

Oct.

919

884

868

2,880

3,600

2,510

2,020

4,210

11,800

7,500

4,900

5,140

4,680

4, 180

3,960

3,240

2,900

2,640

2,410

2,250

1,990

1,820

1,690 

5,420

25.000

11,400

7,450

9,740

15,600

?! 600

171,001

5,516

10.5

11.89

559,200

Nov.

5,620

*5, 710

24,800

57,400

16,600

10,200

7,840

7,570

11,200

22,100

11,400

7,420

5,500

4,550

a3,800

a3,200

a2,800

a2 , 60O

3,260

2,960

2,790

2,560

2,420 

3,060

5,580

8,060

5,050

4,750

4,180

4,330

237,090

7,903

14.8

16.48

470,300

Dec.

4,750

3,840

3,240

2,860

2,630

2,530

2,520

2,420

2,350

2.290

17,200

25.700

9,040

5,820

4,580

5,920

5,400

2,980

2,810

5,920

6,280

15,800

9,410 

6,080

4,740

4,210

5,700

5,250

2,880

2,640

2,460

166,250

5,562

10.0

11.56

329,700

Jan.

2,320

2,190

2,290

3,180

5^,470

*3,230

2,940

2,620

2,350

2,180

2,100

2,090

2,640

2,560

2,660

3.150

3,370

3,080

2,920

2,680

2,400

2,520

2,870 

2,570

2,220

2,010

1,820

1,780

1,620

1,530

Ii560

76,720

2,475

4.63

5.33

152,200

Feb.

1,320

1,340

1,360

1,300

1,290

1,240

1,220

1,170

1,150

1,150

1,430

2.660

2,000

1,690

1,460

1,340

*1,430

1,32O

1,230

1,200

1,170

1,140

1, 120 

1,130

1,160

1,140

1,150

1,360

1,410

39,080

1,348

2.52

2.72

77,510

Mar.

2,360

3,190

2,930

2,260

1,850

1,620

1,680

1,640

1,530

1,380

1,290

1,250

1,220

1,170

1.150

1,160

1,200

1,380

1,720

1,850

2,150

3,050

4.840 

4,720

4,460

4,700

3,550

2,990

2,960

3,190

3,270

73,710

2,378

4.44

5.12

146,200

Apr.

2,880

2,590

2.580

2,990

*3,100

2,630

2,460

2,490

2,680

3,420

4,990

5,800

6,780

8,080

7,990

6,470

5,410

5,550

6,970

10,100

15.500

15,200

10,600 

8,690

8,100

8,450

8,020

7,020

6,420

5,750

185,510

6,177

11.5

12.88

567,600

May

5,480

5,610

5,500

5,220

5,260

5,870

7,200

9,500

10,900

12,000

9,850

7,490

6,250

*5,750

6,580

9,590

15,900

18,400

20.500

19,400

14,400

15,800

15,100 

13,400

11,300

12,000

10,200

8,810

10,800

15,000

17,500

352,320

10,720

20.0

23.10

659,100

June

15,400

12,200

13,000

12,000

10,200

8,600

9,500

9,530

11,900

12,600

10,800

8,480

7,990

8,780

10,000

8,81O

8,270

9,320

12,800

10,600

8,300

7,960

7,680 

6,760

S.040

*S,230

8,570

9,290

8,020

6,400

286,030

9,554

17.8

19.88

567,500

July

6,420

7,280

7,330

6,420

7,660

8,240

7,120

8,300

9,800

9,920

8,720

8,990

9,320

7,680

5,940

5,940

6,080

6,450

6,990

7,020

6,500

5,610

5,010 

4,840

4,400

3,860

3,420

3,050

2,750

2,600

2^450

196,110

6,326

11.8

13.65

389,000

Aug.

2.520

2,170

2,040

1,870

1,840

1,900

1,900

*1,850

1,820

1,790

1,740

1,720

1,740

1,720

1,740

1,670

1,540

1,450

1,430

1,440

1,440

1,400

1,370 

1,340

1,320

1,550

1,370

1,260

1,210

1,170

1.110

50,230

1,620

3.03

3.49

99,630

Sept.

1,080

1,040

990

942

902

862

854

854

838

886

1,440

1,280

1,060

974

910

878

854

830

*814

894

1,78O

1,330

1,090 

1,820

2,900

3,500

3,270

2,630

4,480

^,,610

47,592

1,586

2.96

3.51

94,400

Calendar year 1955: Max 37,400 Min 825 Mean 4,699 Cfsm 8.78 In. 119.23 Ac-ft 3,402,000

Water year 1955-56: Max 37,400 Min 814 Mean 5,086 Cfsm 9.51 In. 129.39 Ac-ft 3,692,000

-._-. __....... (base. 19,000 cfs). Oct. 25 (10:50 a.m.) 30,700 cfs (13.48 ft); Oct. 29 (3:30

p.m.) 23,900 cfs (12.12 ft); Nov. 4 (8:30 a.m.) 46.500 cfs (16.07 ft); Nov. 10 (l a.m.) 30,000 cfs 

(13.35 ft); Dec. 11 (11 p.m.) 46,900 cfs (16.13 ft); May 20 (2:15 a.m.) 22,200 cfs (11.75 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for stations on nearby streams.

Note. Shifting-control method used Nov. 13 to Dec. 10.

Peak discharge
118 SNOHOMISH RIVER BASIN

Wallace River at Gold Bar, Wash.

Location. Lat 47°51'50", long 121°41'45", In NE£ sec. 6, T. 27 N., R. 9 E., on left bank 

30 ft downstream from highway bridge, a quarter of a mile north of Gold Bar, and 

l£ miles upstream from Olney Creek.

Drainage area. 19.8 sq mi.

Records available.--October 1928 to September 1933, July 1946 to September 1956. Monthly 

discharge only for some periods, published in WSP 1316.

Gage. Water-stage recorder. Altitude of gage is 200 ft (from topographic map). December 

1928 to Sept. 30, 1933, staff gage 50 ft upstream at different datum.

Average discharge. 15 years (1928-33, 1S46-56) , 158 cfs (114,400 acre-ft per year).

Extremes. Maximum discharge during year, 1,930 cfs Nov. 9 (gage height, 8.04 ft), but 

may have been higher Dec. 11 or 12; minimum, 13.5 cfs Sept. 6-9 (gage height, 3.38 ft). 

1928-33, 1946-56: Maximum discharge, 2,740 cfs Feb. 26, 1932 (gage height, 8.5 ft, 

from graph based on gage readings, site and datum then in use); minimum, 9.2 cfs 

Oct. 18, 19, 1952; minimum gage height observed, 0.32 ft Aug. 27, Sept. 3-5, 1930, 

site and datum then in use.

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

Some natural regulation in Wallace Lake. No diversion above station.

Revisions (water years) . WSP 1062: Drainage area. WSP 1316: 1930(M) , 1932-33(M) .

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

discharge, in cubic feet per second) 

(Shifting-control method used June 2O-27)

Oct. 1 to Dec. 11 Dec. 12 to Sept. 30

3.6 

3.8 

4.0 

4.2

31

50

74

107

4.5

5.0 

6.6

180

340

1,070

3.38 

3.5 

3.7 

4.0

13.5

19

32

64

4.5 154

5.0 297

6.1 810

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 total

Mean

Cfsm

In.

Ac-ft

Oct.

37

36

35

507

213

103

128

246

422

336

197

238

164

122

103

83

71

61

59

58

51

47

43

387

1.050

422

277

438

578

315

226

7,053

228

11.5

13.25

13,990

Nov.

*170

213

925

*961

326

257

205

232

677

603

273

217

164

134

109

96

91

94

132

98

89

82

78

12^

264

191

260

260

287

270

7,887

263

13.3

14.81

15, 640

Dec.

277

229

188

149

129

127

111

94

86

85

60O

800

500

38O

300

E30

19O

160

140

200

320

500

360

300

250

210

180

165

150

140

13O

7,678

248

12.5

14.42

15,230

Jan.

120

110

120

170

221

*232

199

154

124

103

94

99

176

128

164

297

238

221

186

176

154

207

235

176

139

112

91

83

74

64

58

4,725

152

7.68

8.87

9,370

Feb.

54

52

50

48

49

48

46

46

44

46

99

204

*110

86

72

67

64

60

58

56

53

52

51

51

50

51

52

58

65

1,842

63.5

3.21

3.46

3,650

Mar.

65

86

89

74

62

57

57

57

53

50

48

46

46

44

41

42

44

48

70

74

106

188

273

241

235

224

173

145

166

178

159

3,242

105

5.30

6.09

6,430

Apr.

130

116

103

Tee

176

*143

139

145

147

221

319

319

350

396

342

266

215

224

316

444

550

446

346

277

270

273

254

254

235

196

7,802

260

13.1

14.65

15,480

May188

188

171

178

210

238

283

327

334

391

287

212

176

168

»?58

350

458

550

585

453

3E7

358

366

290

248

283

232

194

283

387

366

9,319

301

15.2

17.50

18,480

June

283

235

287

277

270

212

304

280

370

323

238

196

201

263

366

342

301

290

503

362

273

254

218

176

*161

194

244

210

168

150

7,931

264

13.5

14.90

15,750

July

145

152

136

120

255

196

141

186

196

164

134

145

134

98

80

86

89

94

105

94

78

64

60

58

55

46

42

58

36

53

32

3,266

105

5.30

6.13

6,48O

Aug.

30

34

31

32

32

30

*29

29

28

27

26

26

26

26

27

26

24

24

24

23

22

21

21

25 18.5

55

27

25

24

24

20

814.5

26.3

1.33

1.53

1,620

Sept.

18

16.5

15.5

15

14.5

14

13.5

13.5

13.5

15.5

62

36

26

24

22

19

17

16

*15.5

31

42

28

24

195

270

354

155

200

218

254

2,171.0

72.4

3.66

4.08

4,310

Calendar year 1955: Max 1,050 Mln 21 Mean 189 Cfsm 9.55 In. 129.66 Ac-ft 136, 9OO

Water year 1955-56: Max 1,050 Min 13.5 Mean 174 Cfsm 8.79 In. 119.69 Ac-ft 126,400

Peak discharge (base. 1.550 cfs). Oct. 25 (10 a.m.) 1,830 cfs (7.89 ft); Oct. 29 (12:30 p.m.) 

1,410 cfs (7.19 ft); Nov. 4 (7:30 a.m.) 1.65O cfs (7.58 ft); Nov. 9 (9 p.m.) 1,930 cfs (8.04 ft); 

Dec. 11 or 12 (time and discharge unknown).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 11 to Jan. 4; discharge estimated on basis of records for stations on nearby streams.
SNOHOMISH RIVER BASIN 119

Sultan River near Startup, Wash.

Location. Lat 47 0 58'30", long 121°46'30", in NE£ sec. 28, T. 29 N., R. 8 E., on left 

bank ij miles upstream from intake of Everett water-supply system and 7| miles north 

of Startup.

Drainage area. 74.5 sq mi.

Records available. May 1934 to September 1956.

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

to July 2, 1934, staff gage at same site and datum.

Average discharge . 22 years, 779 cfs (564,000 acre-ft per year).

Extremes. Maximum discharge during year, 34,300 cfs Dec. 11 (gage height, 17.16 ft, from 

high-water mark in well), may have been less because of indeterminate amount of surge, 

from rating curve extended above 5,000 cfs on basis of slope-area determination at 

gage height 17.22 ft; minimum, 92 cfs Sept. 7-9 (gage height, 3.55 ft).

1934-56: Maximum discharge, 34,600 cfs Feb. 9, 1951 (gage height, 17.22 ft, from 

high-water mark in well), from rating curve extended above 5,000 cfs on basis of 

slope-area determination of peak flow; minimum, 48 cfs Sept. 25, 27, 29, 30, 1942; 

minimum gage height, 3.32 ft Sept. 22, 23, 24, 1938, Oct. 19, 20, 1952.

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

No regulation or diversion above station.

Revisions (water years). WSP 1182: 1935, 1936(M) , 1937-39, 1940(M) , 1941, 1942(P), 

1943-49.WSP 1216: Drainage area.

Rating tables, water year 1955-56 (gage height, In feeb, and discharge, 

in cubic feet per second)

Oct. 1 to Dec Dec. 11 to Sept. 30

4.2 

4.6 

5.0 

5.5

185

270

380

560

770

1,360

8.0

9.0

10.0

11.0

12.0

13.0

2,200

3,400

5,000

7,100

9,800

13,000

3.6 

3.9 

4.3

91

131

210

330

530

6.0 

7.0 

8.0 

9.0

810

1,420

2,250

3,400

Note. Same as preceding 

table above 9.0 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

Cfsm

In.

Ac-ft

Oct.

217

199

193

1,840

1,340

720

824

1,620

2,980

2,200

1,280

1,490

1,O8O

840

730

556

476

410

383

365

315

282

255

2.5OO

9.610

3,140

1,880

3,080

4,360

2,140

1,260

48,565

1,567

21.0

24.24

96,330

Nov.

*875

2,100

11.400

8.OOO

2.5OO

1,500

1,000

1,000

1,500

2,500

1,500

850

600

500

430

390

350

400

600

5OO

420

360

350

900

1,800

1,100

1,000

1,400

1,400

1,500

48,725

1,624

21.8

24.32

96,640

Dec .

1,600

1,000

700

550

45O

560

600

600

550

500

12 , OOP

6,000

2,OOO

1,100

800

650

540

500

600

2,000

2,200

3.5OO

2,000

1,200

1,100

1,000

900

700

550

450

4QQ

47,300

1,526

20.5

23.61

98,820

Jan.

400

430

700

1,400

*931

909

620

472

396

357

366

408

781

542

628

1.510

1,100

920

760

735

592

1,000

1,170

900

700

550

470

420

380

330

300

21,177

683

9.17

10.57

42,000

Feb.

310

330

280

250

260

240

230

210

200

210

500

"500 800

350

280

260

270

260

230

220

210

190

180

170

170

170

160

250

400

8,090

279

3.74

4.04

16,050

Mar.

500

650

750

6OO

450

320

310

300

250

210

190

170

160

*148

148

152

163

217

339

375

498

838

1.500

1,180

1,010

936

670

566

725

848

7 5O

15,923

514

6.90

7.95

31,580

Apr.

566

486

441

928

656

476

49O

486

484

757

1,250

1,350

1,510

1,780

1,570

1,190

*953

980

1,410

2,090

2.600

2,290

1,750

1,410

1,330

1,380

1,280

1,250

1,160

964

35,277

1,176

15.8

17.61

69,970

Hay

914

942

865

898

1,030

1,140

1,400

1,680

1,780

2,050

1,560

1,150

926

882

*1,080

1,620

2,200

2,6OO

2,660

2,300

1,690

1,720

1,810

1,450

1,250

1,380

1,140

970

1,280

1,780

1,810

45,957

1,482

19.9

22.94

91,150

June

1,470

1,190

1,410

1,360

1,250

1,210

1,880

1,680

2.170

1,850

1,410

1,060

1.O2O

1,090

1,230

1,340

1,230

1,240

1,960

1,390

1,050

975

876

715

620

*680

953

936

770

592

36,607

1,220

16.4

18.27

72,610

July

615

710

675

592

1,090

1,040

770

931

1,050

958

816

870

870

685

554

579

615

675

745

735

646

550

486

483

434

381

345

308

275

258

250

19,991

645

8.66

9.98

39, 650

Aug.

237

268

223

195

192

206

*210

206

208

203

195

199

208

208

217

208

173

161

167

167

169

171

165

158

182

228

186

158

154

148

134

5,904

190

2.55

2.95

11,710

Sept.

126

119

113

104

98

93

92

92

95

106

323

214

150

130

118

112

104

99

97

168

275

*221

161

977

1,830

2,580

1,210

1,020

1,260

1,400

13,287

443

5.95

6.63

26,350

Calendar year 1955: Max 12.OOO Min 125 Mean 1.OO2 Cfsm 13.4 In. 182.56 Ac-ft 725, 4OO

Water year 1955-56: Max 12,000 Min 92 Mean 948 Cfsm 12.7 In. 173.11 Ac-ft 687,900

Peak discharge (base. 6.000 cfs).--Oct. 25 (9 a.m.) 18,7OO cfs (14.42 ft); Oct. 29 (12:30 p.m.) 

9,200 cfs (11.80 ft); Nov. 3 (1 a.m.) 15,600 cfs (13.66 ft); Dec. 11 (time unknown) 34.3OO cfs 

(17.16 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 4 to Jan. 4, Jan. 24 to Mar. 13s discharge estimated on basis 

of recorded range in stage and records for South Fork Stillaguamish River near Granite Palls.

4r7240 O -58 -9
120 SNOHOMISH RIVER BASIN

Woods Creek near Monroe, Wash.

Location. Lat 47°52'20", long 121°55'10". in W| sec. 33, T. 28 N., R. 7 E., on left bank 

200 ft downstream from West Fork and 2| miles northeast of Monroe.

Drainage area. 55.0 sq mi.

Records available. July 1946 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 100 ft (from topographic map).

Average discharge.--10 years, 157 cfs (113,700 acre-ft per year).

Extremes. Maximum discharge during year, 1,450 cfs probably Dec. 21 (gage height. 6.48 ft, 

from high-water mark in well); minimum, 18.5 cfs Sept. 3 (gage height, 2.03 ft).

1946-56: Maximum discharge, 1,710 cfs Feb. 26, 1950 (gage height, 7.18 ft), from 

rating curve extended above 770 cfs; minimum, 12 cfs Aug. 22, 1951, Sept. 27, Oct. 10, 

1952; minimum gage height, 1.97 ft Aug. 22, 1951, Oct. 10, 1952.

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

Several small diversions above station for domestic use. No regulation.

Revisions. WSP 1286: Drainage area.

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

In cubic feet per second)

2.2 

2.5 

2.9

Oct. 1 to Nov. 3

28 3.4 197

55 3.9 325

105 4.4 485

Nov. 4 to Sept. 30

2.0 

2.2 

2.5 

3.0 120

3.5 210

4.0 340

5.0 700

6.1 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

Ototal

Mean

Cfsm

In.

Ac-ft

Oct.

28

28

28

35

67

48

49

101

108

155

127

95

79

67

60

53

51

50

50

48

43 

40

39

51

198

409

364

310

305

400

464:

3,950

127

2.31

2.67

7,830

Nov.

349

296

457

608

580

438

322

299

296

*385

331

300

250

200

160

150

140

140

250

300

270 

250

270

300

330

350

450

400

500

BOO

10,171

339

6.16

6.88

20,170

Dec.

1,000

800

600

450

350

350

350

350

340

300

500

550

450

350

300

290

250

250

350

800

1,200 

1,000

900

900

800

750

750

600

450

350

300

16,980

548

9.96

11.48

33,680

Jan.

310

450

700

800

1,000

900

800

600

500

450

400

350

650

600

700

900

880

*640

460

397

346 

352

418

397

337

285

244

221

200

180

162

15,629

504

9.16

10.57

31,000

Feb.

148

134

130

128

144

143

144

139

128

133

208

400

400

*313

246

208

198

182

171

166

167 

175

171

175

221

261

293

325

346

5,997

207

3.76

4.06

11,890

Mar.

334

331

358

367

316

269

256

274

266

244

217

198

192

184

173

166

167

155

148

148

171 

200

256

256

251

288

277

256

290

304

293

7,605

245

4.45

5.14

15,080

Apr.

254

249

*225

246

277

269

256

251

223

204

188

171

157

144

136

126

117

111

108

99

94 

91

88

83

78

74

71

81

98 

82

4,651

155

2.82

3.14

9,230

May

74

76

71

68

73

71

64

63

57

93

146

117

101

91

*83

78

74

67

65

62

59 

55

52

50

48

49

49

48

45

43

41

2,133

68.8

1.25

1.44

4,230

June

40

40

44

60

64

64

65

72

118

134

162

130

108

97

97

120

118

101

125

143

128 

112

101

92

85

*79

76

71

67 

64

2,777

92.6

1.68

1.88

5,510

July

~S2 62

60

57

59

58

53

50

49

48

47

42

41

40

40

38

39

40

37

35

36 

34

34

38

34

32

31

30

31 

29

30

1,316

42.5

0.773

0.89

2,610

Aug.

30

31

33

32

30

*28

27

27

27

27

27

27

26

26

28

28

27

26

26

25

26 

26

25

24

26

28

24

26

26 

24

23

836

27.0

0.491

0.57

1,660

Sept.

23

22

20

20

20

19.5

19

19.5

20

22

38

33

24

23

22

22

21

21

*21

26

28 

25

24

30

33

54

54

39

37 

38

818.0

27.3

0.496

0.55

1,620

Calendar year 1955: Max 1,200 Mln 26 Mean 195 Cfsm 3.55 In. 48.07 Ac-ft 141,000

Water year 1955-56: Max 1,200 Mln 19 Mean 199 Cfsm 3.62 In. 49.27 Ac-ft 144,500

Peak discharge (base, 700 efs). Probably Dec. 1 (time and discharge unknown): probably Dec. 21 

(time unknown) 1,450 cfs (6.48 ft); probably Jan. 5 (time and discharge unknown;; probably Jan. 16 

(time and discharge unknown).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 12 to Jan. 17, June 24, 25; discharge estimated on basis of 

recorded range in stage and records for stations on nearby streams.
SNOHOMISH RIVER BASIN 121

Patterson Creek near Fall City, Wash.

Location (revised).--Lab 47°34 I 50", long 121°56'25", In SW^NE^ sec. 8, T. 24 N., R. 7 E.,

2 miles upstream from mouth and 2f miles northwest of Fall City. 

Drainage area. 15.5 sq mi (revised). 

Records available. February 1947 to October 1950, June 1955 to September 1956. Records

for June to October 1945 at site l£ miles downstream not equivalent owing to intervening drainage area. 

Gage. Water-stage recorder. Altitude of gage is 70 ft (from topographic map). Prior to

June 1955 at different datum. 

Extremes. 1955: Maximum discharge during period June to September, 38 cfs July 1 (gage

height, 2.21 ft); minimum, 7.2 cfs Aug. 17, 22, Sept. 6 (gage height, 1.17 ft).

1955-56: Maximum discharge during water year, 194 cfs Dec. 22 (gage height, 5.19ft);

minimum, 6.4 cfs July 22 (gage height, 1.12 ft).

1947-50, 1955-56: Maximum discharge, 480 cfs Feb. 17, 1949 (gage height, 4.81 ft,

datum then in use), from rating curve extended above 130 cfs; minimum, that of July 22,

1956. 

Remarks. Records good. Many small diversions for irrigation and domestic use. No reguRatlng table, June 16, 1955, to Sept. 30, 1956 (gage height, In feet,

discharge, In cubic feet per second) 

(Shifting-control method used Oct. 25-29)

1.2 

1.5 

2.0 

2.5

7.6

14

3.0 

4.0 

5.0

135

185

Discharge, In cubic feet per second, 1955

Day

2

3

4

5

6

7

8 

9

10

June

_

_

_

_

_

_

_

-

_

July

26

17

16

15.5

14

13.5

13

12 

13.5

15

Aug.

16

15

11.5

10.5

10

9.8

9.6

9.4 

9.8

9.3

Sept.

8.2

8.0

8.0

8.0

7.8

7.8

*8.2

8.7 

8.7

8.5

Day

11

12

13

14

15

16

17

18 

19

20

June

-

-

-

_

-

*11

11.5

12

11.5

11

July

14

12.5

11.5

10.5

10

10.5

10,. 5

10 

*9.4

9.3

Aug.

*8.9

a. 7

8.3

8.2

8.0

7.8

7.8

7.6 

7.6

7.8

Sept.

8.3

8.2

11

11.5

10

8.3

13.5

10 

9.4

9.4

Day

21

22

23

24

25

26

27

28. 

29

30

31

Total ...................................................................

Inches. .....................................

Acre-feet ................................................................

* Discharge measurement made on this day.

June

10.5

11

12.5

11

11

13

14.5

17 

17.5

17

-

"

_

-

July

9.1

9.4

8.7

8.5

8.9

11

11

10.5

11

11

18

12.3

0.794

755

Aug.

7.8

7.8

7.6

7.6

8.0

8.0

8.0

7.8 

8.0

8.2

8.3

8.93

0.576

549

Sept.

*9.6

9.3

9.3

9.1

8.9

9.1

9.8

15.5 

IT75

10.5

284 . 1 

9.47

0.611

0.68

564

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Of Sin

In.

Ac -ft

Oct.

9.8

9.6

976

16.5

24

*12

35

65

~82 109

35

*24

19.5

17

16

14

13.5

13

13.5

13.5

13

12.5

12

34

74

*66

46

44

52

50

*39

994.0

32.1

2.07

2.38

1,970

Nov.

32

52

95

110

96

79

54

56

47

105

114

98

65

44

34

30

27

47

94

79

65

64

61

92

122

142

147

129

112

110

2,402

80.1

5.17

5.76

4,760

Dec.

132

135

116

93

73

72

64

71

82

70

114

*141

120

96

73

64

62

51

54

134

173

185

Tea

140

114

106

112

98

80

67

58

3,118

101

6.52

7.48

6,180

Jan.

60

73

114

143

161

163

150

128

104

84

69

60

73

62

88

101

92

*82

77

73

70

82

112

104

86

71

59

54

50

44

41

2,730

88.1

5.68

6.55

5,410

Feb.

38

38

35

32

38

35

35

33

31

31

32

32

33

31

30

27

28

28

30

35

44

42

44

54

57

65

64

76

*73

1,171

40.4

2.61

2.81

2,320

Mar.

62

58

91

91

74

61

70

85

74

63

51

46

47

44

40

36

35

33

32

32

42

51

68

64

87

80

70

62

79

86

82

1,896

61.2

3.95

4.55

3,760

Apr.

67

57

*50

46

46

41

44

38

36

34

32

31

30

29

28

27

26

24

24

23

23

23

22

23

24

22

22

22

26

23

963

32.1

2.07

2.31

1,910

May

21

20

20

19.5

18.5

18

17.5

17

17

20

20

23

20

*18.5

17.5

17

16.5

16

16

15.5

15.5

15.5

15

15

15

15

15.5

15

14.5

1475

14.5

533.5

17.2

1.11

1.28

1,060

June

14.5

14.5

16

17.5

17.5

16

18

19.5

22

3_1

23

18.5

17.5

16.5

16

16

15.5

15

*22

18.5

16

15

14

13.5

13

12.5

12

12

11.5

TTT5

496.0

16.5

1.06

1.19

984

July

11.5

11

11

11.5

11.5

11

10.5

10

10.5

10.5

10

9.8

9.4

9.8

9.3

9.1

8.3

8.5

8.5

9.4

8.9

8.0

8.3

8.2

7.8

8.3

8.2

7.6

172

8.3

293.9

9.48

0.612

0.71

583

Aug.

8.2

9.1

9.4

8.9

8.3

8.5

8.0

8.3

8.3

8.5

8.7

8.3

8.2

9.1

*9.8

9.4

8.9

8.5

9.3

8.3

8.2

8.5

9.1

8.9

9.8

13.5

13

12

11.5

11

11

290.5

9.37

0.605

0.70

576

Calendar year 1955: Max - Mln - Mean - Cfsm - In. - Ac-ft -

Sept.

10

10.5

10.5

11

9.8

9.8

10

1~9.4

11.5

19

14

12

11

11

11

10.5

*11

11

11

11

11

10.5

11

13.5

45

25

17.5

21

18

407.5

13.6

0.877

0.98

808

Water year 1955-56: Max 185 Mln 7.6 Mean 41.8 Cfsm 2.70 In. 36.70 Ac-ft 30,320

Peak discharge (base, 200 cfs). No peak above base. 

* Discharge measurement made on this day.
122 SNOHOMISH RIVER BASIN

Griffin Creek near Carnation, Wash.

Location. La t 4V°37'00", long 121°54'15", in SW£sw£ sec. 27, T. 25 N., R. 7 E. , on left 

bank a quarter of a mile upstream from bridge on State Highway 15B, three-quarters of 

a mile upstream from mouth, and 2 miles south of Carnation.

Drainage area. IV.1 sq mi.

Records available . June 1945 to September 1956. Prior to October 1951, published as "near 

Tolt."

Gage.--Water-stage recorder. Altitude of gage is 120 ft (from topographic map). Prior to 

Sept. 21, 1951, at site 1,000 ft downstream at different datum.

Average discharge. II years, 43.5 cfs (31,490 acre-ft per year).

Extremes.--Maximum discharge during year, 393 cfs Dec. 12, 22 (gage height, 3.78 ft), from 

rating curve extended above 200 cfs; minimum, 2.8 cfs Sept. 3 (gage height, 1.40 ft). 

1945-56: Maximum discharge, 738 cfs Feb. 10, 1951 (gage height, 5.03 ft, site and 

datum then In use); minimum, 2.2 cfs Aug. 20, 1953; minimum gage height, 0.75 ft Aug.22, 

23, 1945 (site and datum then in use).

Remarks. Records good. Some small diversions for irrigation and domestic use. 

lation.

Revisions. MSP 1286: Drainage area.

No reguRating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet pep second) 

(Shifting-control method used Feb. 10-17)

1.4

1.5

1.6

1.7

1.8 

2.0

3.0

4.9

7.3

10.5

14.5

25

2.2 

2.5 

2.8 

3.3 

3.8

125

245

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

Cfsm

In.

Ac-ft

Oct.

7.3

7.0

7.3

11.5

17.5

13.5

25

63

135

207

137

96

71

55

44

36

30

26

24

23

21

19.5

18.5

31

91

156

121

101

99

91

80

1,865.1

60.2

3.52

4.06

3,700

Nov.

70

72

96

123

125

107

86

80

76

191

214

160

125

96

*71

57

48

49

72

72

73

79

79

105

169

207

234

186

*149

147

3,418

114

6.67

7.43

6,780

Dec.

186

225

174

131

104

91

79

78

94

93

137

356

269

177

131

111

93

76

68

120

275

368

320

223

169

152

158

137

111

94

79

4,879

157

9.18

10.61

3,680

Jan.

76

79

120

239

508

284

272

207

156

123

98

79

82

82

112

139

131

*120

107

105

94

94

133

133

109

90

76

62

52

45

38

3,845

124

7.25

8.36

7,630

Feb.

32

30

28

28

31

30

30

29

28

27

26

33

43

45

36

33

35

35

34

33

33

33

34

39

43

52

58

82

107

------

1,127

38.9

2.27

2.45

2,240

Mar.

120

135

172

165

131

*102

94

112

104

88

72

62

57

50

45

42

41

41

43

47

59

82

113

137

149

172

141

114

111

116

121

3,043

98.2

5.74

6.62

6,040

Apr.

114 TOT

88

76

71

62

59

55

50

46

42

38

*36

32

30

28

27

26

24

23

21

21

21

20

19

18.5

TS~ 17.5

21

19

1,224.0

40.8

2.39

2.66

2,430

May

17

16.5

16

16

16.5

16

14

13.5

13.5

17.5

18.5

17

16

14.5

13.5

13.5

13.5

11.5

10.5

11.5

11.5

10.5

10

9.8

9.8

10

10.5

9.8

9.4

8.8

*8.8

405. 4 1

13.1

0.766

0.88

804

June

8.4

874

10

11

10

9.8

11

12.5

14

18

17.5

15

13.5

13.5

14.5

14

14

14

26

27

27

24

22

20

19

17

16

14

11.5

12

464.6

15.5

0.906

1.01

922

July

11.5

9.8

9.8

11

*10.5

9.4

8.4

7.9

8.2

8.4

7.6

7.3

7.0

6.8

6.5

6.0

5.8

5.6

5.1

4.9

4.7

4.5

4.3

4.1

3.9

3.7

3.5

375

3.7

4.3

208.7

6.73

0.394

0.45

414

Aug.

4.1

4.1

4.1

3.9

3.7

3.5

3.4

3.4

4.1

3.7

3.4

3.2

372

3.4

3.7

3.7

3.5

3.4

3.4

3.2

3.2

*3.2

3.4

3.4

3.2

4.1

4.1

3.9

3.7

3.5

3.4

111.2

3.59

0.210

0.24

221

Sept.

3.4

3.2

3.0

372

3.2

3.2

3.2

3.2

3.4

3.7

6.2

5.6

4.7

4.3

4.1

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

4.1

4.5

9.8

10.5

8.8

12.5

i±

153.0

5.10

0.298

0.33

303

Calendar year 1955: Max 358 Win 5.3 Mean 55.9 Cfsm 3.27 In. 44.40 Ac-ft 40,490

Water year 1955-56: Max 368 Min 3.0 Mean 56.7 Cfsm 3.32 In. 45.10 Ac-ft 41,160

Peak discharge (base, 220 efa).--Oct. 10 (2 to 3:30 a.m.) 225 cfs (3.23 ft); Nov. 10 (12 p.m.) 

245 cfs (3.30 ft); Nov. 27 (9:30 a.m.) 242 cfs (3.29 ft); Dec. 2 (9 a.m.) 237 cfs (3.27 ft); Dec. 12 

(4:30 p.m.) 393 cfs (3.78 ft); Dec. 22 (5:30 p.m.) 393 cfs (3.78 ft); Jan. 5 (4 to 6 a.m.) 326 cfs 

(3.54 ft).

* Discharge measurement made on this day.
SNOHOMISH RIVER BASIN 123

North Fork Tolt River near Carnation, Wash.

Location. Lat 47°42'40", long 121°47'35", In SE±NWi sec. 28, T. 26 N., R. 8 E., on right 

bank 2f miles upstream from confluence with South Fork and 7 miles northeast of Carnation.

Drainage area. 39.2 sq mi.

Records available. October 1952 to September 1956.

Gage. Water-stage recorder. Altutude of gage Is about 600 ft above mean sea level (from 

river-profile map).

Extremes.--Maximum discharge during year, 7,360 cfs Dec. 11 (gage height, 12.2 ft, from 

high-water mark), from rating curve extended above 2,800 cfs; minimum, 46 cfs Sept. 19, 

20 (gage height, 3.70 ft).

1952-56: Maximum discharge, that of Dec. 11, 1955; minimum, 40 cfs Nov. 30, Dec. 1, 

1952, but may have been less sometime during period of no gage-height record in October 

1952; minimum gage height, that of Sept. 19, 20, 1956.

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

No regulation or diversion above station.

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

3.6

3.8

4.0

4.3

4.6

5.0

5.5

in cubic fee 

40

68

105

169

248

380

590

;t per second) 

6.0

6.5

7.0

8.0

9.0

10.0

830

1,110

1,430

2,190

3,140

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

EO

21 

EE

E3

E4

E5

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Ac -ft

Oct.

100

95

450" 90

430

230

E80

600

1,EOO

700

500

5EO

400

300

270

E40

220

200 

200

E10

190 

175

170

450

2,2OO

1,000

700

1,000

1,100

900 

5 5O

15,670

505

IE. 9

14.87

31,080

Nov.

450

*9EO

2,170

2,160

90O

676

554

612

1,100

1,680

740

514

450

360

3EO

300

270

345 

520

420

370 

320

340

500

950

900

1,000

950

1,000

l.OOO

22,786

760

19.4

21. 6E

45,200

Dec .

1,050

700

550

470

410

440

400

380

430

400

5,700

2,060

900

600

*458

458

422

380 

450

6OO

1,000

1,710

1,050

7OO

650

600

550

500

450

400 

550

E3,158

747

19.1

21.97

45,930

Jan.

340

340

500

850

700

600

470

380

*341

327

530

557

450

376

496

756

599

617 

556

617

483 

630

655

471

405

366

550

310

297

275 

26O

14,420

465

11.9

13.68

28,600

Feb.

251

*245

257

234

257

226

226

217

210

210

407

612

555

294

E57

248

242

251 

225

212

207 

202

197

194

194

189

184

199

220

7,160

247

6.50

6.79

14,200

Mar.

278

355

320

263

254

217

220

215

204

194

189

184

182

176

T79

179

184

215 

269

*266

366 

504

648

563

599

558

407

562

462

487 

438

9,917

320

8.16

9.41

19,670

Apr.

580

541

517

555

369

527

558

584

584

487

650

635

680

745

653

532

458

475 

648

870

1,050 

865

666

563

568

590

*540

554

550

462

16,456

549

14.0

15.61

32,640

May

442

500

458

438

492

518

594

676

680

860

622

483

422

418

536

715

910

1,050 

1,010

850

640 

685

715

576

522

590

514

454

576

745

720

19,551

624

15.9

18.54

58,540

June

565

483

563

594

671

487

*755

676

765

685

527

422

426

528

695

626

504

504 

820

6TT

462 

430

399

348

320

344

414

580

550

288

15,606

52O

15.5

14.81

50,950

July

288

507

288

275

400

407

5TT

548

566

557

294

304

288

251

228

234

251

240 

242

240

220 

202

189

184

174

162

*155

146

140

135 

T33

7,723

249

6.35

7.33

15,320

Aug.

131

162

155

125

121

121

119

117

115

115

109

107

107

105

103

99

96

92

90

88

86 

84

82

81

94

101

97

90

*81

77

25.

3,199

103

2.63

5.05

6,550

Sept.

70

66

65

62

60

59

58

56

56

60

158

101

75

64

59

54

52

50 

48

92

212 

111

82

350

502

781

472

428

634

514

5,449

182

4.64

5.17

10,810

Calendar year 1955 : Max 3,700 Min 90 Mean 453 Cfsm 11.6 In. 156.89 Ac-ft 3E8,OOo

Water year 1955-56 : Max 3,700 Mln 48 Mean 440 Cfsm 11. E In. 15E.63 Ac-ft 319,100

Peak discharge (base, 3,OoQ efs).--Oct. 25 (time unknown) 4,400 cfs (10.1 ft); Nov. 2 (11:30 p.m.) 

5,640 cfs (9.45 ft); Dec. 11 (time unknown) 7,560 cfs (12.2 ft).

* Discharge measurement made on this day.

Note.--No gage-height record Oct. 1 to Nov. 2, Nov. 15 to Dec. 14, Dec. 18-2O, Dec. 23 to Jan. 8; 

discharge estimated on basis of recorded range In stage and records for stations on nearby streams.
124 SNOHOMISH RIVER BASIN

South Fork Tolt River near Carnation, Wash.

Location. Lab 47°41'20", long 121°42'35", in SW£SW£ sec. 31, T. 26 N., R. 9 E., on left 

bank 7 miles upstream from confluence with North Fork and 10 miles northeast of Carnation.

Drainage area. 19.7 sq mi.

Records available. October 1952 to September 1956.

Sage. Hater-stage recorder. Altitude of gage is 1,300 ft (from river-profile map).

Extremes.--Maximum discharge during year, 5,900 cfs Dec. 11 (gage height, 7.46 ft); minimum, 25 cfs Sept. 6-9 (gage height, 1.00 ft).

1952-56: Maximum discharge, that of Dec. 11, 1955; minimum daily discharge, 14 cfs 

Oct. 18, 1952.

Remarks. Records good. No regulation or diversion above station.

Rating tables, water yeai 1955-56 (gage height, In feet, and discharge 

cubic feet per second)

Oct. 1 to Dec. 10 Dec. 11 to Sept. 30

1.3 

1.5 

1.8

2.1 

2.5

62

102

154

249

3.0 405

3.5 610

4.0 880

4.5 1,230

5.0 1,690

1.0 

1.2 

1.4 

1.7 

2.0 

2.5

39

58

95

149

279

5.0 

6.0

445

665

950

1,290

1,700

2,990

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

Day

1

2

3

4 

5

6

7

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

Cfsra

In.

Ac-ft

Oct.

49

46

45

429 

342

167

170

375

968

552

283

294

236

167

139

115

99

86

84

84

77

70

63

355

1,450

523

325

508

690

437

277

9,505

307

15.6

17.94

18,850

Nov.

208

*344

1,150

1,550 

498

518

260

266

480

1,140

404

252

191

158

153

121

113

133

274

191

164

137

123

270

583

468

500

422

405

475

11,511

384

19.5

21.73

22,830

Dec.

455

269

200

162 

144

154

143

137

156

169

2,570

1,180

362

243

198

181

160

145

145

*353

494

1,100

479

288

238

232

195

160

139

129

120

10,900

352

17.9

20.58

21,620

Jan.

113

106

137

362 

29T

243

188

149

129

118

118

129

208

169

190

556

298

304

255

270

218

273

304

208

160

135

120

113

103

95

8J7

5,929

191

9.70

11.19

11,760

Feb.

84

*80

75

74

77

73

74

70

66

67

169

323

T64

122

97

91

88

82

77

73

69

66

64

62

61

60

58

70

80

2,616

90.2

4.58

4.94

5,190

Mar.

122

167

151

113 

94

84

88

85

75

68

65

62

60

58

58

*60

67

92

124

122

185

291

395

323

342

320

211

181

232

258

229

4,782

154

7.82

9.03

9,480

Apr.

176

151

137

T§3

167

143

156

171

181

264

562

355

389

438

378

304

249

255

362

516

650

528

399

320

316

332

*304

288

288

246

9,008

300

15.2

17.01

17,870

May

227

235

224

232 

267

288

336

395

402

468

352

258

213

211

279

402

542

630

615

508

368

378

416

339

285

326

285

229

301

420

423

10,854

350

17.8

20.49

21,530

June

332

279

316

320 

339

267

*406

362

413

389

323

241

235

270

339

329

285

279

451

375

270

243

218

181

156

162

211

208

178

141

8,518

284

14.4

16.08

16 , 900

July

137

153

145

133 

209

252

IT?

190

205

203

162

162

162

135

111

111

113

122

127

125

113

100

91

88

84

75

*70

66

60

57

56.

3,990

129

6.55

7.53

7,910

Aug.

55

78

62

54 

50

50

49

48

47

46

45

44

44

44

44

44

40

57

37

37

37

36

36

35

36

42

44

40

*37

33

51

1,362

43.9

2.23

2.57

2,700

Sept.

30

29

28

27

26

26

25

25

26

29

83

60

43

36

32

50

29

27

27

38

155

76

56

156

241

364

303

252

3~65 419

3,063

102

5.18

5.78

6,080

Calendar year 1955: Max 2,370 Min 32 Mean 230 Cfsm 11.7 In. 158.73 Ac-ft 166,800

Water year 1955-56: Max 2,370 Min 25 Mean 224 Cfsm 11.4 In. 154. 87 Ac-ft 162,700

Peak discharge (base, 2,000 efs).--0ct. 25 (12 m.) 2,220 cfs (5.45 ft); Dec. 11 (7 p.m.) 5,900 cfs 

(7.46 ft) . - 

* Discharge measurement made on this day.
SNOHOMISH RIVER BASIN 125

Tolt River near Carnation, Wash.

Location.--Lat 47°41'45", long 121°49'30", in SjNE^- sec. 31, T. 26 N., R. 8 E., on right 

bank 500 ft downstream from the forks, a quarter of a mile upstream from Stossel 

Creek, and 5 miles northeast of Carnation.

Drainage area. 79.7 sq mi.

Records available. August 1928 to January 1932, September 1937 to September 1956. Prior 

to October 1951, published as "near Tolt."

Gage.--Water-stage recorder. Datum of gage is 348 ft above mean sea level (river-proflie 

survey). Prior to Oct. 31, 1928, staff gage and Oct. 31, 1928, to Jan. 3, 1932, 

water-stage recorder, at site 350 ft upstream at datum 7.1 ft higher (by river-profile 

survey). Sept. 1 to Oct. 6, 1937, staff gage at present site at datum 1.64 ft higher.

Average discharge. 22 years (1928-31, 1937-56), 594 cfs (430,000 acre-ft per year).

Extremes..--Maximum discharge during year, 15,000 cfs Dec. 11 (gage height, 12.52 ft), 

from rating curve extended above 7,600 cfs as explained below; minimum, 94 cfs 

Sept. 7-9, 18-20 (gage height, 4.10 ft).

1928-32, 1937-56: Maximum discharge, 16,800 cfs Feb. 9, 1951 (gage height, 12.92 

ft), from rating curve extended above 7,600 cfs on basis of slope-area determination 

of peak flow; minimum, 53 cfs Sept. 22, 23, 1951 (gage height, 3.84 ft).

Remarks.--Records excellent. No regulation or diversion above station.

Revisions (water years).--WSP 1216: Drainage area. WSP 1286: 1929(M), 1930, 1938(M), 

1939, 1943(M), 1945(M), 1951(M).

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

in cubic feet per second)

Oct. 1-24 Oct. 25 to Sept. 3O

4.3 132

4.5 175

5.0 315

5.5 495

6.O 740

7.0 1,48O

8.0 2,650

4.1 

4.5 

5.0 

5.5 

6.0 

6.5

94

175

315

495

750

1,130

7.0 

7.5 

8.0 

9.0 

10.0

1,600

2,130

2,750

4,400

6,650

Discharge, in cubic feet pe nd, 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

In.

Ac-ft

Oct.

162

153

149

891

794

416

463

1,080

2,380

1,460

824

878 

685

507

438

384

335

302

305

309

277

259

242

996

4,200

1,620

1,140

1,730

1,960

1,440

1,000

27,779

896

11.2

12.96

55,100

Nov.

757

1,380

3,730

5. 920

1,740

1,230

994

1,050

*1,720

3,230

1,470

962 

757

636

548

503

465

511

898

66O

600

531

503

852

1,750

1,530

1,760

1,540

1,610

1,670

39,507

1,317

16.5

18.43

78,360

Dec.

1,750

1,130

922

764

672

690

625

610

648

615

6.640

3,680 

1,410

994

834

771

672

600

642

1,450

1,940

3,180

1,720

1,150

986

970

848

720

654

600

 

39,505

1,274

16.0

18.43

78,360

Jan.

527

519

728

*1.4SO

1,260

1,080

930

750

654

590

576

585 

827

696

848

1,270

1,180

1,130

1,030

1,120

898

1,110

1,240

898

732

625

571

527

491

457 

427

25,756

831

10.4

12.02

51,090

Feb.

406

391

374

370

388

*370

370

352

332

349

659

1.140 

648

540

457

427

424

395

370

360

349

332

318

315

318

318

315

366

420

------

12,173

420

5.27

5.68

24,140

Mar.

507

684

66O

54O

461

420

431

427

398

363

346

325 

318

312

305

305

315

377

484

491

*648

1,010

1.520

1,150

1,210

1,150

834

726

898

978 

922

19,315

623

7.82

9.01

38,310

Apr.

750

660

605

732

690

605

648

714

7O8

898

1,150

1,130 

1,240

1,360

1,290

970

820

834

1,110

*1,550

1.890

1,630

1 , 240

1,000

994

1,030

946

946

946

785

29,871

996

12.5

13.94

59,250

May

744

820

732

738

848

883

1,020

1,180

1,210

1,550

1,130

855 

720

690

869

1,220

1,630

1.880

1,820

1,500

1,100

1,150

1,250

1,010

862

978

876

714

922

1,270 

1,260

33,431

1,078

13.5

15.60

66,310

June

978

813

954

978

1,130

*827

1,240

1,100

1,300

1,180

970

738 

714

832

1,210

1,090

914

869

1.470

1,180

869

778

696

600

540

548

654

636

553

468

26,829

894

11.2

12.52

53,210

July

461

503

472

442

608

726

527

562

605

566

495

491 

491

424

370

374

370

*384

406

398

360

329

299

289

271

253

239

225

209

199 

197

12,545

405

5.08

5.85

24,880

Aug.

189

242

254

185

175

175

173

173

168

164

162

155 

155

153

153

151

145

140

134

132

130

128

128

128

136

151

149

*142

132

124 

118

4,794

155

1.94

2.24

9,510

Sept.

114

112

108

107

101

99

96

"96 94

105

240

189 

136

118

110

105

101

96

94

123

409

212

155

476

755

1.250

912

702

1,110

994

9,299

310

3.89

4.34

18,440

Calendar year 1955: Max 6,640 Min 132 Mean 787 Cfsm 9.87 In. 134.09 Ac-ft 570,000

Water year 1955-56 : Max 6,640 Min 94 Mean 767 Cfsm 9.62 In. 131.02 Ac-ft 557,000

Peak discharge Cbase. 57400 cfs). Oct. 25 (11 a.m.) 7.420 cfs (10.30 ft); Nov. 3 (12:30 a.m.) 

5,550 cfs (9.54 ft); Nov. 9 (12 pirn.) 4,750 cfs (9.17 ft); Dec. 11 (9:20 p.m.) 15,000 cfs (12.52 

ft); Dec. 22 (l p.m.) 3,860 cfs (8.72 ft).

* Discharge measurement made on this day.
126 SNOHOMISH RIVER BASIN

Snoqualmie River near Carnation, Wash.

Location.--Lat 47°39'55", long 121°55'30", in W^ sec. 9, T. 25 N., R. 7 E., on left bank 

40 ft downstream from highway bridge, 1 mile northwest of Carnation, and 2 miles downstream from Tolt River.

Drainage area. 608 sq mi.

Records available. October 1928 to September 1956. Prior to October 1951, published as 

"near Tolt."

Gage. Water-stage recorder. Datum of gage is at mean sea level, unadjusted. Prior to 

Pec. 20, 1933, chain or wire-weight gage on old bridge, 100 ft upstream at datum 42.96 

ft higher. Dec. 20, 1933, to Sept. 30, 1939, water-stage recorder at present site at 

datum 42.96 ft higher than present datum. Auxiliary water-stage recorder l£ miles upstream from base gage.

Average discharge. 28 years, 3,745 cfs (2,711,000 acre-ft per year).

Extremes. Maximum discharge during year, 40,800 cfs Dec. 12 (elevation, 57.67 ft); minimum daily, 620 cfs Sept. 8.

1928-56: Maximum discharge, 59,500 cfs Feb. 27, 1932 (elevation, 59.88 ft, from 

graph based on gage readings); maximum elevation observed, 59.93 ft Nov. 13, 1932; 

minimum discharge, 239 cfs Aug. 21, 1945, but may have been less sometime during 

period of faulty intake action Sept. 13 or 14, 1949; minimum elevation recorded, 43.30 

ft Sept. 11, 1930; minimum daily discharge, 396 cfs Sept. 24, 1938.

Revisions. The maximum discharge for the water year 1934 has been revised to 

48,700 cfs Nov. 3, 1933; maximum gage height, 15.83 ft Dec. 10, 1933, superseding 

figure published in WSP 767.

Remarks. Records good. Several small diversions for irrigation and domestic use above 

station. Low flow diverted for operation of powerplant at Snoqualmie Falls but returned to river above station. Some pondage at Snoqualmie Falls and some diurnal 

fluctuation caused by powerplant.

Revisions (water years) . WSP 1246: Drainage area. WSP 1316: 1932-33(M) .

Rating table, water year 1955-56 (elevation, in feet, and discharge,

In cubic feet per second)

(Pall used as a factor Nov. 5, 11, Dec. 12, 13, 23. Shifting-control 

method used Dec. 14 to May 17)

44.6

45.0

45.5

46.0

46.5

47.0

580

910

1,420

2,060

2,820

3,690

48.0

50.0

52.0

54.0

56.5

5,610

10,200

15,600

22,600

33,800

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

Cfsm

In.

Ac -ft

Oct.

1,260 

1,120

1,100

2,380

6,450

3,820

2,920

4,720

12,100 

11,300

7,020

5,800

5,450

4,430

3,780

3,210 

2,760

2,470

2,300

2,230

2,060

1,870 

1,710

2,550

15.500

12,800 

7,130

9,230

10,800

12,800 

7,700

168,770

5,444

8.95

10.32

334,800

Nov.

5,760 

5,230

14,200

*19.700

16,900

8,540

6,800

5,990

6,030 

17,200

14,100

7,740

5,800

4,810

4,110

3,650 

3,310

5,260

5,780

4,990

4,320

3,920 

5,600

4,410

8,750

11,000 

10,400

10,000

*8,350

7,930

236,560

7,885

13.0

14.47

469,200

Dec.

9,350 

7,840

6,280

5,250

4,600

4,470

4,490

4,140

4,580 

4,220

11,500

*55.600

17,000

8,780

6,470

5,690 

5,150

4,560

4,520

6,090

10,200

15,600 

15,500

8,920

6,930

6,220 

5,900

5,110

4,510

4,090

5,760

245,100

7,906

15.0

14.99

486,100

Jan.

5,560 

5,550

4,500

6,870

7.650

6,580

5,990

5,110

4,410 

5,920

5,640

5,510

4,090

4,110

4,470

5,550 

6,090

5,590

5,210

5,290

4,680

4,640 

*5,450

4,850

4,160

5,670 

5,260

5,060

2,850

2,640

2.540

140,850

4,544

7.47

8.62

279,400

Feb.

2,220 

2,150

2,160

2,120

2,100

2,120

2,020

1,920

1,800 

1,780

2,140

4,640

5,710

5,010

2,650

2,260 

2,240

2,240

2,050

2,000

1,930

1,920 

1,860

1,880

1,920

2,120 

2,090

2,320

2,770

------

66,100

2,279

3.75

4.04

131,100

Mar.

3,440 

5,290

4,890

4,240

3,510

*3,040

2,960

3,580

3,090 

2,740

2,420

2,200

2,170

2,090

1,960

1.870 

1,870

2,120

2,630

2,840

5,130

4,600 

6,200

6,780

6,220

6.910 

5,490

4,660

4,770

5,170

5,450

118,330

3,817

6.28

7.24

234,700

Apr.

4,750 

4,150

5,760

5,850

4,150

5,620

5,470

5,620

5,580 

5,980

5,590

5,720

*6,200

7,150

7,220

6,090 

5,150

4,790

5,760

7,790

10,200

10.500 

8,510

6,960

6,180

6,410 

6,260

5,720

5,450

4,850

171,130

5,704

9.38

10.47

359,400

May

4,490 

4,590

4,260

4.240

4,450

4,850

5,510

6,740

7,550 

8,200

7,240

5,690

4,720

4,500

4,720

6,450 

8,970

11,400

12.700

12,500

9,510

8,500 

9,280

*8,490

7,020

7,550 

6,950

5,740

6,260

8,420

10,000

220,190

7,103

11.7

13.47

456,700

June

8.870 

7,130

7,200

7,540

6,820

6,050

6,500

6,520

7,700 

7,770

7,900

6,050

5,450

5,590

6,710

6,340 

5,670

5,740

8,040

8,230

6,500

5,690 

5,550

4,790

4,180

4.050 

5,090

5,820

5,110

4,240

188,200

6,275

10.5

11.51

575,500

July

3,850 

4,280

4,350

3,940

4,320

*5,570

4,750

4,720

5.610 

5,590

5,070

4,810

5,050

4,410

3,600

3,470 

5,400

3,460

3,710

3,850

5,650

3,310 

2,900

2,740

2,600

2,410 

2,190

1,990

1,800

1,640

1,610

114,630

3,698

6.08

7.01

227,400

Aug.

1.560 

1,550

1,520

1,390

1,510

1,510

1,290

1,270

1,240 

1,240

1,240

1,120

1,140

1,140

1,140

1,150 

1,090

991

957

964

964

*919 

955

919

928

1,000 

1,140

1,080

1,000

928 

856

35,281

1,138

1.87

2.16

69,980

Sept.

788 

772

772

796

676

692

660

620

708 

668

919

1,440

1,130

883

756

748 

740

684

676

660

1,510

1,430 

1,120

1,110

2,300

3,130 

3,550

2,500

4,560

6.280

45,078

1,436

2.36

2.63

85,440

Calendar year 1955: Max 33,600 Min 874 Mean 4,833 Cfsm 7.95 In. 107.87 Ae-ft 3,499,000

Water year 1955-56 : Max 33,600 Min 620 Mean 4,777 Cfsm 7.86 In. 106.93 Ac -ft 3,468,000

Peak discharge (base. 16.000 cfs). Oct. 25 (10:30 p.m.) 17,800 cfs (52.62 ft); Nov. 5 ( 

a.m.) 24,600 cfs (54.49 ft)> Nov. 10 (9 to 11 p.m.) 20,500 cfs (55.41 ft); Dec. 12 (12 m.) 40,800 

cfs (57.67 ft); Dec. 25 (l to 2 a.m.) 19,500 cfs (53.27 ft).

* Discharge measurement made on this day.
SNOHOMISH RIVER BASIN 127

Pllohuck River near Granite Falls, Wash.

Location.--Lat 48°03'15", long 121°57'25", In SEv sec. 30, T. 30 N., R. 7 E., on right 

bank 200 ft upstream from county road bridge and 2 miles southeast of Granite Falls.

Drainage area.--53.5 sq ml.

Records available. May to October 1911, January 1943 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 340 ft (from topographic map). Prior 

to Oct. 13, 1911, staff gage at approximately same site at different datum. Jan. 14, 

1943, to July 9, 1946, several staff gages within 150 ft of present site at same datum.

Average discharge. 13 years, 343 cfs (248,300 acre-ft per year).

Extremes.--Maximum discharge during year, 4,600 cfs Oct. 26 (gage height, 7.66 ft); minimum, 36 cfs Sept. 6-10 (gage height, 2.17 ft).

1911, 1943-56: Maximum discharge, 10,500 cfs Oct. 25, 1945 (gage height, 10.4 ft, 

from graph based on gage readings), from rating curve extended above 4,100 cfs on 

basis of slope-area determination at gage height 8.00 ft; minimum, 27 cfs Oct. 19, 20, 

1952; minimum gage height, 1.89 ft Aug. 23, 24, 1945.

Remarks.--Records good. City of Snohomish diverts about 5 cfs, 5 miles above station, 

for municipal use. Slight regulation at low flow from manipulation of diversion gates.

Revisions (water years).--WSP 1286: Drainage area, 1943(M), 1944, 1945(M), 1946, 1947(M). 

The figures of peak discharge for the water year 1948 have been revised as shown below, 

superseding those published in WSP 1122.

Revised peak discharge. 1947-48: Oct. 19 (2 a.m.) 5,380 cfs; Feb. 26 

2,850 cfs; Mar. "2 (12:30 a.m.) 3,480 cfs.

i:30 a.m. ',

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

2.3 59

2.7 123

3.2 254

4.0 590

5.0 1,300

6.5 2,850

2.1 30

2.5 74

3.0 182

4.0 590

5.0 1,300

6.0 2,260

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

£5

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

76

M

69

413

377

176

224

441

545

658

361

333

248

184

156

136

121

110

108

110

101

94

89

438

2,520

2,240

1,010

1,140

1,180

1,090 

767

15,584

503

30,910

Nov.

526

808

2,450

1,930

994

670

495

526

897

*1,040

550

397

a320

a260

a £30

3210 

3200

206

268

232

232

214

206

530

844

545

585

555

724

1,170

18,814

627

37,320

Dec.

1,780

900

600

454

384

380

372

348

376

352

1,760

1,420

610

432

356

336 

285

249

354

1,010

1,150

1,480

978

706

754

767

640

495

3410

3340 

3290

20,738

669

41,130

Jan.

285

£97

476

1,210

1,190

1,250

893

620

500

432

392

404

782

555

694

1,720 

*1,450

886

682

795

565

767

858

560

436

368

312

285

252

228

206

20,350

656

40,360

Feb.

191

185

174

168

200

191

200

197

179

194

668

1.010

535

392

29.3

249 

238

215

200

*191

191

185

179

177

191

197

200

296

392

7,878

272

15,630

Mar.

505

550

640

490

372

312

312

328

289

249

225

212

200

191

191

194 

206

267

372

356

477

718

970

712

640

646

505

472

670

712 

640

13,623

439

27,020

Apr.

481

418

384

681

590

427

468

458

432

510

*590

525

540

550

454

372 

312

328

414

490

555

463

364

293

297

312

293

281

308

258

12,828

428

25,440

May

225

242

212

206

256

259

270

300

285

409

368

270

232

206

238

*308 

360

388

384

324

235

249

252

209

185

206

174

"203 155

249

245

8,104

261

16,070

June

200

174

212

289

312

348

436

384

610

580

552

352

293

289

540

625 

414

324

638

560

368

297

252

212

206

206

*212

185

163

145

10,378

346

20,580

July

141

148

136

127

271

294

177

168

163

145

133

133

123

114

108

104 

100

99

95

89

84

77

76

76

71

67

64

63

60

 59 59 

3,624

117

7,190

Aug.

58

58

58

55

55

54

54

53

52

49

52

49

49

48

48

47 

*45

48

49

46

43

42

42

41

52

59

55

46

47

47 

43

1,541

49.7

3,060

Sept.

40

39

38

38

37

36

36

36

36

37

104

71

50

47

46

43

42

40

39

*62

86

63

52

301

406

 £75 544

266

242

300

3,455

115

6,850

Calendar year 1955: Max 2,530 Mln 57 Mean 411 Ac-ft 297,400

Water year 1955-56: Max 2,520 Mln 36 Mean 374 Ac-ft 271,600

Peak discharge (base, 2,500 cfs).-

2,720 cfs (6.40 ft); Nov. 30 (11 p.m

-Oct. 26 (12:30 3.m.) 4,600 cfs (7.66 ft); Nov. 3 (3:30 a.m.) 

) 3,480 cfs (6.95 ft); Dec. 11 (10:30 p.m.) 3,480 cfs (6.95 ft);

Jan. 16 (8 p.m.) 3,320 cfs (6.84 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

stations.
128 SNOHOMISH RIVER BASIN

Little Pilchuck Creek near Lake Stevens, Wash.

Location.--Lat 48°02'QO", long 122°03'00", in NWrNWir sec. 4, T. 29 N., R. 6 E., on right 

bank just downstream from highway crossing, lj miles northeast of Lake Stevens and 

2 miles upstream from Stevens Creek.

Drainage area.--17.5 sq mi.

Records available.--June 1946 to September 1951, September 1952 to September 1956.

Gage.--Water-stage recorder and wooden control. Altitude of gage is 200 ft (from topographic map).

Average discharge.--9 years (1946-51, 1952-56), 32.7 cfs (23,670 acre-ft per year).

Extremes.- -Maximum discharge during year, 339 cfs probably Dec. 22 (gage height, 4.86 ft, 

from recorded range in stage); minimum, 0.7 cfs Sept. 6; minimum gage height, 0.87 ft 

July 19-22.

1946-56: Maximum discharge, 382 cfs Jan. 1, 1955 (gage height, 5.11 ft); minimum, 

that of Sept. 6, 1956; minimum gage height, 0.70 ft Aug. 18, 24-26, 1951.

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

which are poor. Several small diversions above station for farm use. No regulation.

Revisions.--WSP 1286: 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 Nov. 7-14, July 22 to Sept. 30)

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

0.9 

1.1 

1.3

1.6

2.5

6.2

11.5

2.0 

2.5 

3.0 

4.1

45

72

112

236 1.1 

1.3

0.8

1.5

2.5

6.1

11

1.6 

2.0 

2.5 

3.0 

4.3

102

254

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

Day

1

0

3

4

5

6

7

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.

3.0

2.9

2.8

3.4

*4.3

3.5

5.1

9.2

9.2

11.5

8.6

7.3

6.2

5.3

4.9

4.5

4.3

4.1

4.1

3.9

3.9

3.5

3.7

5.3

45

103

67

58

70

235 

222

924.5

29.8

1.70

1.96

1,830

Mov .

126

95

143

163

164

112

72

65

61

*76

64

48

32

26

b22

2O

19

17

22

24

21

19

17

35

53

62

54

57

90

120

1,899

63.3

3.62

4.04

3,770

Dec.

170

140

92

66

51

42

40

37

39

38

160

140

90

58

43

36

32

30

45

100

160

250

160

110

88

80

70

57

46

40 

37

2,547

82.2

4.70

5.41

5,050

Jan.

37

42

70

120

140

150

110

82

65

56

50

51

80

104

140

210

253

176

118

98

*86

93

114

105

82

64

49

41

35

30

b26

2,877

92.8

5.30

6.11

5,710

Feb.

24

23

22

22

25

28

31

28

26

28

54

103

94

*72

53

b40

35

32

30

32

41

47

52

48

65

82

81

79

79

1,376

47.4

2.71

2.92

2,730

Mar.

86

79

88

84

67

53

48

53

55

48

38

33

33

32

29

26

24

23

22

22

28

36

45

42

42

50

43

43

59

56 

45

1,432

46.2

2.64

3.04

2,840

Apr.

37

36

32

30

33

32

30

30

26

24

21

19.5

*18.5

18

17

16

15

14

13.5

13

12

11.5

11

10.5

10

9.7

9.4

10

11.5

9.9

581.0

19.4

1.11

1.23

1,150

May

9.7

9.4

8.9

8.6

9.2

8.6

7.9

7.4

7.2

12

M

12.5

10.5

9.4

8.4

*7.7

7.0

6.5

6.3

5.9

5.7

5.3

4.9

4.9

4.5

4.9

5.1

4.7

4.3

3.7

5.4

228.5

7.37

0.421

0.49

453

June

3.6

376

4.5

7.7

10.5

20

17.5

15.5

26

39

55

35

23

19

17

18.5

16

14

22

24

22

16

14

12.5

11.5

9.7

*8.6

7.7

7.0

7.0

507.4

16.9

0.966

» 1.08

1,010

July

6.3

5.7

5.1

4.9

6.8

5.9

5.1

4.5

3.9

3.7

3.6

3.4

3.1

2.9

2.9

2.8

2.5

2.4

2.3

2.2

2.3

2.3

2.4

2.3

2.3

2.4

2.3

2.0

2.2

2.2

2.3

105.0

3.39

0.194

0.22

208

Aug.

2.2

2.0

1.8

1.6

1.4

1.4 r.3 *1.2

T72

1.6

1.6

1.7

1.6

1.7

2.0

2.0

2.0

1.8

1.6

1.4

1.3

1.3

1.3

1.3

2.5

2.9

274

2.2

2.3

2.0

1.8

54.4

1.75

o.loo

0.12

108

Sept.

1.8

1.7

1.7

1.8

2.6

1.1

1.2

1.5

1.8

2.0

5.5

2.6

2.0

1.8

1.8

1.4

1.7

1.8

1.6

*2.3

2.6

2.0

1.8

2.9

2.5

5.1

3.7

3.1

3.2

3.4

70.0

2.33

0.133

0.15

139

Calendar year 1955 : Max 317 Mln 2.0 Mean 37.6 Cfsm 2.15 In. 29.15 Ac-ft 27,200

Water year 1955-56: Max 253 Mln 1.1 Mean 34.4 Cfsm 1.97 In. 26.77 Ac-ft 25,000

Peak discharge (base, ISO cfs). Oct. 3O (8 p.m.) 284 cfs (4.44 ft); Nov. 5 (6 a.m.) 176 cfs (3.63

ft); probably Bee. 1 (time and discharge unknown); probably Dec. 11 (blme and discharge unknown); 

probably Bee. . 22 (time unknown) 339 efs (4.86 ft); probably Jan. 6 (time and discharge unknown);

17 (12 to 5 a.m.) 268 cfs (4.40 ft). 

* Blscharge measurement made on this day. 

b Stage-discharge relation affected by Ice. 

Note. --No gage-height record Nov. 16 to Jan. 13, Feb. 1-5, 

records for stations on nearby streams.

17-19; discharge estimated on basis of
SNOHOMISH RIVER BASIN 129

Snohomish River at Snohomish, Wash.

Location.--Lat 47 0 54'40", long 122°05'50", in SE^ see. 13, T. 28 N., R. 5 E., on downstream end of drawrest of bridge on State Highway 1A in Snohomish.

Drainage area.--1,720 sq mi, approximately.

Records available.--February 1941 to September 1956 (high-water discharges only). Highwater elevations prior to 1932 and high-water profiles on flood peaks since that time 

are available at the Seattle office of Corps of Engineers.

Gage. Water-stage recorder. Datum of each gage is 10 ft below mean sea level, datum of 

1929. Auxiliary water-stage recorder 2-j- miles downstream from base gage.

Extremes.--Maximum discharge during year, 58,600 cfs Nov. 4 (gage height, 28.10 ft). 

1941-56: Maximum discharge, 136,000 cfs Feb. 10, 1951 (gage height, 30.12 ft). 

Maximum stage known, 35 ft at base gage and 31 ft at auxiliary gage in 1906, from 

flood profile furnished by Corps of Engineers.

Remarks. Records good. Large diurnal fluctuation because of tides. No appreciable regulation or diversion at stages for which discharges are published.

Revisions (water yearsJ.--WSP 1152: 1948(M). WSP 1316: Drainage area, 1947(M). 

WSP 1396:1951(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.

_

_

-

-

13,100

10,100

-

_

22,000

28,900

20,600

15,300

14,900

12,000

10,400

_

-

_

_

-

_

_

_

_

33,500

t7,OOO

28,500

25,300

30,800

58, 6OO

27,900

_

_

-

Nov.

19,200

14,90O

37,800

57,600

53,200

36,000

26,000

21,000

19,900

4O,OOO

36,700

26,100

18,900

14,700

12,000

10,500

_

_

_

11,000

_

_

_

_

15,900

20,700

20,600

20,800

18,900

17 , 900

_

_

-

Dec.

25,2OO

21,000

17,300

14,100

11,800

11,OOO

10,500

-

_

-

15,700

54,500

45,200

29,600

20,400

16,000

14,500

12,100

11,200

13,600

24,500

34,200

38,OOO

28,200

21,100

18,200

16,700

13,700

11,700

11,200

10,900

_

_

-

Jan.

-

-

10,300

15,000

20.600

20,100

20,300

14,300

11,800

10,000

_

-

11,200

10,700

11,500

14,700

18,100

15,000

13,900

13,000

12,000

11,800

14,400

13,000

11,200

_

_

_

_

-

~

_

_

-

Feb.

_

-

-

-

-

_

-

-

-

-

_

10,500

10,900

-

-

_

-

-

_

-

_

_

-

-

-

_

-

_

-

_

-

-

Mar.

_

11,400

11,600

11,100

-

_

-

_

-

-

.

-

-

-

-

_

-

_

_

-

_

_

14,400

17.100,

14,400

16,300

14,000

12,200

11,200

12,100

13,100

_

_

-

Apr.

11,400

10,300

-

-

11,300

_

-

-

-

-

12,500

14,100

15,900

17,700

19,200

17,200

14,400

12,700

14,500

18, 8OO

25,900

30,6OO

24,600

21,000

17,800

18,300

17,600

16,400

15,700

14,100

_

-

-

May

13,100

12,700

12.000

12,000

12,000

12,700

14,700

17,400

20,300

23,300

22,400

17,900

15,000

12,800

13,600

16,900

23,400

31,000

36,400

58.400

30,900

24, 8OO

*26,700

25,500

21 , 500

20,800

20,200

16,700

17,100

22,800

28, 800

633, 6OO

20,440

tl,257

June

28,900

22,6OO

21,200

22,500

19,700

17,400

17,900

17,900

22,800

23,600

25,800

18,600

16,000

15,900

18,500

18,500

16,800

16,100

21,900

25,500

18,400

15,800

14,700

15,900

12,100

11,500

13,700

16,800

15,600

15,400

549,600

18,320

*1,090

July

11,900

12,500

15,000

11,800

12,OOO

14,900

15,100

15,600

15,900

16,400

15,800

14,200

15,500

14,100

11,900

11,500

11,100

11,500

12,OOO

12,500

12,500

10,100

-

-

-

_

-

-

-

-

~

_

-

-

Aug.

_

-

-

Sept.

-

-

-

-

-

_

-

-

-

-

_

-

-

-

-

_

-

-

-

-

_

-

-

-

-

11,000

11,500

-

-

15,600

_

-

-

Calendar year : Max Mln Mean Ac-ft

Water year : Max Mln Mean Ac-ft

Peak discharge (base, 4O,OOO cfs). Oct. : 

cfs (28.10 fb); Nov. 10 (6 p.m.) 46,500 cfs 

Dec. 22 (11 p.m.) 42,4OO cfs (24.41 ft).

* Dls c harge measurement rosde on this day,

* Expressed in thousands.

6 (1 a.m.) 54,500 cfs (27.O7 ft); Nov. 4 (5 p.m.) 58,6OO 

(25.57 ft); Dec. 12 (12 m.) 57,200 cfs (27.76 ft);
130 SNOHOMISH RIVER BASIN

Quilceda Creek near Marysville, Wash.

Location. Lat 48°06'20", long 122°09'40", in NE^NEi- sec. 9, T. 30 N., R. 5 E. , on right 

bank 300 ft downstream from Middle Fork and 3| miles north of Marysville.

Drainage area. 13.9 sq mi.

Records available. June 1946 to September 1956.

Gage. Water-stage recorder and wooden control. Datum of gage is 28.2 ft above mean sea 

level (stadia traverse).

Average discharge. 10 years, 25.3 cfs (18,320 acre-ft per year).

Extremes. Maximum discharge during year, 215 cfs Dec. 20 (gage height, 6.45 ft); minimum, 

3.1 cfs Aug. 21 (gage height, 1.51 ft).

1946-56: Maximum discharge, 229 cfs Dec. 31, 1954 (gage height, 6.68 ft); minimum, 

2.2 cfs July 16, 1951; minimum gage height, 1.49 ft Sept. 19, 1953.

Remarks. Records good. Several diversions above station for irrigation and domestic use. 

No regulation.

Revisions (water years). WSP 1286: 1950, drainage area.

Rating tatles, water year 1955-56 (gage height, In feet, and discharge,

in cubic feet per second) 

(Shlfbing-control method used Oct. 25 to Nov. 7, May 9 to July 5)

Oct. 1 to Dec Dec. 21 to Sept. 30

1.6 

2.0 

3.0 

4.0 

6.0

78

188

1.5

1.6 

1.8 

2.0

3.0

4.4

7.7

11.5

2.5 

3.0 

4.0 

6.0

23

38

75

188

Discharge, in cubic feet per «ater year October 1955 bo September 1956

Day

1

2

3

4

5

6

7

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.

5.6

5.4

*5.4

7.0

7.4

6.2

11

12.5

11.5

13

8.8

7.4

6.8

6.6

6.4

6.0

6.2

6.0

5.8

5.8

5.8

5.4

5.4

6.0

32

38

*26

23

39

115

67

513.4

16.6

1.19

1.37

1,020

Nov.

44

48

68

60

68

45

36

42

43

49

44

35

28

22

19.5

18

17

17

37

37

34

29

32

37

39

47

52

48

59

105

1,257.5

41.9

3.01

3.36

2,490

Dec.

160

106

70

52

46

44

44

46

44

41

65

72

53

41

36

35

32

30

40

159

184

T78

154

116

111

95

111

72

52

40

34

2,363

76.2

5.48

6.32

4,690

Jan.

34

43

69

125

163

174

127

83

67

55

52

*44

99

78

121

147

142

93

76

70

69

82

90

72

56

46

38

35

32

29

25

2,436

78.6

5.65

6.52

4,830

Feb.

24

22

22

23

33

34

38

34

30

33

49

65

53

45

*36

32

32

31

38

53

*59

57

54

44

56

63

54

50

52

1,216

41.9

3.01

3.25

2,410

Mar.

57

50

65

62

48

40

40

40

46

40

34

31

34

33

29

27

25

24

22

23

34

36

41

38

35

32

28

34

45

40

34

1,167

37.6

2.71

3.12

2,310

Apr.

30

29

27

*25

25

24

25

26

23

22

20

18.5

17.5

17

16.5

16

15.5

15

14

13.5

13

12

12

12

11.5

11

11

12

11.5

11.5

537.0

17.9

1.29

1.44

1,070

May

11

11

11

11

11

11

10.5

10.5

10

i±

13

11.5

11

10.5

10

9.7

*9.5

9.3

9.5

9.3

9.1

9.0

8.8

8.8

8.6

8.8

8.8

8.4

8.2

7.9

7.9

308.6

9.95

0.716

0.83

612

June

7.9

7.7

9.7

10.5

12.5

22

13.5

13.5

23

38

36

24

18.5

15.5

15

16

14

13

17.5

17

14.5

13

12

11

11

10

9.7

9.5

*9.3

9.1

453.9

15.1

1.09

1.21

900

July

8.8

8.4

8.1

8.1

9.0

8.6

8.2

7.7

7.2

6.8

7.0

6.7

6.5

6.3

6.5

6.0

5.8

5.5

5.7

5.4

5.4

5.0

5.0

5.0

5.0

5.0

5.0

4.9

4.9 

4.9

4.7

197.1

6.36

0.458

0.53

391

Aug.

4.7

5.0

4.9

4.6

4.3

4.3

4.4

3.8

4.0

*4.1

4.0

4.0

4.0

4.0

4.4

4.6

4.1

4.0

4.0

3.8

3.8

3.7

3.7

3.7

5.7

.9

.4

.6

.4 

.1

.0

132.0

4.26

0.306

0.35

262

Sept.

4.0

3.8

4.0

3.8

3.8

3.8

3.8

3.8

4.0

4.1

7.0

5.5

4.9

4.7

4.7

4.9

4.7

4.9

4.9

5.5

5.4

4.9

5.0

6.2

5.7

*9.1

T7o

6.2

6.5 

6 . 3

153.4

5.11

0.368

0.41

304

Calendar year 1955: Max 186 Min 4.6 Mean 31.3 Cfsm 2.25 In. 30.51 Ac-ft 22,640

Water year 1955-56: Max 184 Min 3.7 Mean 29.3 Cfsm 2.11 In. 28. ^1 Ac-ft 21,290

Peak discharge (tia.se, 110 cfs).--Oct. 30 (10 a.m.) 151 cfs (5.50 ft); Dec. 1 (2:30 a.m.) 184 cfs 

(5.98 ft); Dec. 20 (9 p.m.) 215 cfs (6.45 ft); Dec. 26 (11 p.m.) 133 cfs (5.08 ft); Jan. 6 (10 a.m.) 

190 cfs (6.03 ft); Jan. 13 (8 a.m.) 129 cfs (5.02 ft); Jan. 16 (6 to 7 p.m.) 185 cfs (5.95 ft).

* Discharge measurement made on this day.
TULALIP CREEK BASIN 131

Lake Goodwln near Sllvana, Wash.

Location..--Lat 48°08'35", long 122°18'00", In NW&SEi sec. 28, T. 31 N., R. 4 E., on west 

side of lake, 4.7 miles southwest of Sllvana and 6 miles north of channel connecting 

Lake Goodwln and Lake Shoecraft.

Drainage area.--4.51 sq ml.

Records available.--April 1953 to September 1956.

Gage.--Staff gage read once dally. Altitude of gage Is 321 ft (from topographic map). 

Prior to Feb. 15, 1955, at site 0.8 mile north of present site at datum 3.00 ft higher 

prior to Oct. 1, 1954, and at present datum thereafter.

Extremes. Maximum gage height observed during year, 6.76 ft Jan. 6, 7; minimum observed, 

5.22 ft Sept. 10.

1953-56: Maximum gage height observed, that of Jan. 6, 7, 1956; minimum observed, 

5.12 ft (present datum) Sept. 25-28, 1953.

Remarks. Level of Lake Goodwin is controlled by flashboards in a wooden flume at mouth 

of Lake Shoecraft. No known diversion.

Page 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

Z7

28

29

30

31

Oct.

5.48

5.46

1716

5.46

5.48

5.46

5.54

5.54

5.56

5.58

5.60

5.60

5.60

5.58

5.58

5.58

5.56

5.56

5.56

5.56

5.56

5.56

5.56

5.56

5.72

5.72

5.72

5.72

5.76

5.76 

5.80

Nov.

5.80

5782"

5.86

5.88

5.88

5.88

5.88

5.90

5.92

5.92

5.94

5.94

5.92

5.90

5.90

5.88

5.88

5.88

5.90

5.92

5.94

5.94

5.94

5.96

5.98

6.02

6.04

6,04

6,04

6 , 14

Dec.

6.18

6.18

6.18

6.18

6.18

6.20

6.18

6.20

6.20

6.20

6.22

6.22

6.22

6.22

6.22

6.22

6.22

6.22

6.28

6.36

6.40

6.48

6.52

6.56

6.64

6.66

6.68

6.' 66

6 . 66

6.60

Jan.

6.60

6.62

6.64

6.68

6.72

6.76

6.76

6.74

6.66

6.58

6.52

6.48

6.50

6.46

6.52

6.56

6.54

6.54

6.52

6.50

6.48

6.46

6.44

6.40

6.36

6.30

6.26

6.24

6.20

6

-1 Q

. J.O

6.12

Feb.

6.10

6.06

6.02

6.00

5.98

5.96

5.94

5.92

5.90

5.90

5.90

5.90

5.88

5.90

5.88

5.86

5756"

5.86

5.86

5.86

5.86

5.88

5.88

5.88

5.90

5.90

5.92

5.98

5.98

Mar.

6.02

6.02

6.12

6.04

6.12

6.16

6.16

6.20

6.22

6.22

6.24

6.22

6.26

6.26

6.24

6.24

6.22

6.22

6.20

6.22

6.24

6.24

6.24

6.28

6.28

6.30

¥728"

6.28

6.26

6.28 

6.30

Apr.

6.28

6.28

6.26

6.26

6.24

6.22

6.22

6.22

6.20

6.20

6.20

6.18

6.16

6.16

6.14

6.14

6.14

6.12

6.10

6.10

6.10

6.10

6.08

6.08

6.06

6.04

6.04

6.04

6.02

6 .02

May

6.00

6.00

5.98

5.98

5.98

5.96

5.96

5.96

5.96

6.00

6.00

6.00

5.98

5.98

5.96

5.96

5.96

5.94

5.94

5.92

5.90

5.90

5.90

5.88

5.88

5.86

5.86

5.84

5.84

5 . 82 

5.82

June

5.82

5.80

5784

5.86

5.88

5.90

5.90

5.92

5.90

6.00

6.00

6.00

6.00

6.00

6.00

6.02

6.02

6.00

6.06

6.06

6.04

6.02

6.00

6.00

5.98

5.98

5.96

5.96

5.96

5.94

July

5.94

5 '92

5^90

5,90

5.90

5.90

5.88

5.88

5.88

5.86

5.86

5.86

5.84

5.82

5.82

5.80

5.80

5.78

5.78

5.76

5.76

5.74

5.74

5.72

5.70

5.68

5.66

5.64

5.6Z

5.60 

5.58

Aug.

5.58

5758"

5.58

5.56

5.56

5.56

5.56

5.54

5.52

5.50

5.48

5.48

5.43

5.48

5.48

5.48

5.48

5.46

5.46

5.44

5.42

5.42

5.40

5.40

5.40

5.40

5.38

5.38

5.38

5.36 

5.34

Sept.

5.34

5732

5.32

5.30

5.28

5.26

5.26

5.24

5.24

5.22

5.30

5.30

5.30

5.30

5.28

5.28

5.28

5.28

5.28

5.30

5.30

5.28

5.26

5.26

5.26

5.32

5.32

5.32

5, 32

5 32
132 TULALIP CREEK BASIN

Lake Shoecraft near Tulallp, Wash.

Location. Lat 48°07'35", long 122°18'15", In SW£ sec. 33, T. 31 H. , R. 4 E., on piling 

12 ft shoreward from boathouse on southwest shore, a quarter of a mile east of outlet, 

and 4jj- miles north of Tulalip.

Drainage area. 5.57 sq mi.

Records available. April 1953 to September 1956.

Gage. Staff gage read once daily. Altitude of gage is 324 ft (from topographic map).

Extremes. Maximum gage height observed during year, 2.48 ft Jan. 5; minimum observed, 

1.06 ft Sept. 10.

1953-56: Maximum gage height observed, that of Jan. 5, 1956; minimum observed, 

0.96 ft Sept. 23-27, 1953.

Remarks. Levels of Lake Shoecraft is controlled by planks in wooden flume at outlet. 

No known diversion.

Gage height, in feet, water year October 1955 to September 3.956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

la

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

1.28

1.28

1.28

1.29

1.29

1.29

1.31

1.34

1.37

1.40

1.41

1.40

-

-

-

_

_

1.38

1.39

1.39

1.38

1.38

1.38

1.39

1.44

1.53

1.54

1.54

1.58 1 . 62

1.63

Nov.

1.65

1.66

1.67

1.69

1.71

1.70

1.70

1.73

1.74

1.74

1.74

1.74

1.74

1.72

1.72

1.71

1.70

1.70

1.70

1.72

1.74

1.75

1.76

1.78

1.80

1.82

1.85

1.85

1.87

1.92

Dec.

2.02

1.99

1.99

1.99

1.99

2.01

1.99

1.99

2.00

2.02

2.04

2.05

2.07

2.07

-

_

_

-

_

-

_

2. 29

2.29

2.33

2.37

2.38

2.42

2.42

2.41

2.40 

2.38

Jan.

2.36

2.36

2.38

2.44

2.48

2.40

2.34

2.29

2.24

2.20

2.16

2.08

2.09

2.08

2.10

2.14

2.13

2.12

2.11

2.10

2.09

2.07

2.06

2.02

1.99

1.95

1.92

1.89

_

-

Feb.

.

-

-

-

-

_

1.64

1.62

1.60

1.59

1.61

1.62

1.60

1.57

1.59

1.58

1.57

1.56

1.56

1.59

1.59

1.59

1.59

1.69

1.72

1.75

1.78

1.81

Mar.

1.84

1.86

1.90

1.94

1.97

1.99

1.99

2.00

2.03

2.05

2.04

2.04

2.06

_

-

_

_

_

_

2.04

2.06

2.10

2.12

2.11

2.11

2.11

2.10

2.10

2.11

2.12 

2.10

Apr.

2.10

2.08

2.07

2.02

2.06

2.05

2.04

-

-

-

2.00

1.99

1.99

1.98

1.96

1.96

1.95

1.95

1.94

1.93

1.92

1.91

1.90

1.88

1.86

1.85

1.84

1.84

1.83

1 . 82

May

1.81

1.81

1.80

1.80

1.79

1.79

1.78

1.78

1.78

1.82

1.81

1.80

1.80

1.79

1.78

_

1.78

1.76

1.76

1.74

1.72

1.71

1.70

1.70

1.69

1.68

1.68

1.67

1.67 

1.64

June

1.63

1.63

1.64

1.68

1.70

1.72

1.73

1.74

1.76

1.82

1.82

1.81

1.81

1.81

1.84

1.84

1.83

1.83

1.86

1.87

1.85

1.85

1.83

1.81

1.80

1.79

1.78

1.76

1.76

1.74

July

1.74

1.73

1.72

1.71

1.71

1.70

1.70

1.69

1.69

1.69

1.68

1.67

1.66

1.65

1.64

1.63

1.62

1.61

1.60

1.59

1.58

1.57

1.56

1.54

1.52

1.51

1.49

1.46

1.46

1.44 

1.40

Aug.

1.38

1.38

1.40

1.40

1.38

1.38

1.36

1.34

1.34

1.32

1.31

1.30

1.28

1.28

1.28

1.30

1.29

1.28

1.27

1.27

1.25

1.24

1.23

1.22

1.22

1.20

1.18

1.18

1.18

1 . 18 

1.14

Sept.

1.14

1.14

1.13

1.12

1.10

1.09

1.08

1.07

1.07

1.06

1.14

1.13

1.12

1.12

1.11

1.11

1.10

1.10

1.09

1.09

1.08

1.08

1.08

1.09

1.10

1.14

1.14

1.15

l.'lS
STILLAGUAMISH RIVER BASIN 133

South Pork Stillaguamish River near Granite Falls, Wash.

Location. Lat 48°06 I 10", long 121°56'40", in SW£NW£ sec. 8, T. 30 N., R. 7 E., on right 

bank a quarter of a mile upstream from county road bridge, If miles upstream from 

Canyon Creek, and 2 miles northeast of Granite Falls.

Drainage area. 119 sq mi.

Records available. December 1902 to July 1903 (gage heights only), July 1928 to September 

1956. Published as "at Robe" 1902-3.

Gage. Water-stage recorder. Altitude of gage is 310 ft (from river-profile map). Prior 

to Aug. 31, 1928, staff gage at site 8 miles upstream at different datum.

Average discharge. 28 years, 1,050 cfs (760,200 acre-ft per year).

Extremes. Maximum discharge during year, 21,500 cfs Dec. 11 (gage height, 15.48 ft); 

minimum, 126 cfs Sept. 8 (gage height, 3.32 ft).

1928-56: Maximum discharge, 38,800 cfs Feb. 26, 1932 (gage height, 19.7 ft, from 

graph based on gage readings), from rating curve extended above 15,000 cfs; minimum, 

55 cfs Sept. 23, 24, 1938; minimum gage height, 2.99 ft Aug. 19-21, 1941.

Remarks. Records good. Some small diversions for domestic use above station. No 

regulation.

Revisions (water years). W3P 902: 1939. WSP1286: 1929-31(M), 1932 , 1933-34(M) , 1935, 

 1937(M), 1938-39(P) , 1940-41(M), 1943(P) , 1944(M), 1945(P) , 1946(M) , 1947(P) , 1948(M), 

1951(M).

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

In cubic feet per second)

Oct. 25 to Sept. 30

3.7 225

4.0 338

4.5 580

5.0 895

5.5 1,290

6.0 1,780

7.0 H,980

8.0 4,430

5.5 

6.0

122

197

330

560

860

1,230

1,660

7.0

8.0

9.0

10.5

12.0

14.0

2,780

4,250

6,000

9,110

12,500

17,400

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

Cfsm

In.

Ac-ft

Oct.

259

239

239

2,130

1,800

937

1,080

2,090

3,610

2,770

1,550

1,820

1,320

988

867

688

574

520

479

460

399

355

318

2,820

14,10O

5,530

2,650

3,640

5,600

3,390

1,780

65,002

2,097

17.6

20.31

128,900

Hov.

1,230

2,68O

*15.400

10,600

2,940

1,790

1,370

1,390

2,220

4,OOO

1,660

1,070

821

711

633

604

484

571

874

723

639

539

503

1,400

2,580

1,620

1,530

2,030

2,000

2,120

66,732

2,224

18.7

20.86

132,400

Dec .

2,270

1,310

965

783

687

795

847

747

808

723

7.760

6,600

1,810

1,170

944

840

723

627

834

2,780

2,940

5,480

2,650

1,660

1,520

1,490

1,150

888

753

675 

604

53,833

1,737

14.6

16.82

106,800

Jan.

588

593

854

2,280

1,820

1,830

1,230

902

753

675

705

771

1,370

965

1,260

2,860

*2,050

1,590

1,370

1,550

1,130

1,960

2,090

1,300

958

789

669

621

555

479 

427

36,994

1,193

10.0

11.56

73,380

Feb.

445

479

418

392

418

387

379

362

334

342

790

1,570

693

529

418

387

404

383

354

*338

338

326

315

308

319

312

300

486

711

13,037

450

3.78

4.07

25,860

Mar.

814

1,030

1,170

789

593

488

479

474

422

387

338

334

323

308

304

304

315

379

550

621

874

1,520

2,550

2,190

1,520

1,620

1,170

958

1,210

1,360

1,560

26,534

856

7.19

8.29

52,630

Apr.

1,OOO

854

755

1,010

1,040

821

777

795

771

916

*1,550

1,570

1,780

2,070

1,860

1,460

1,170

1,190

1,590

2,240

2,850

2,550

1,960

1,590

1,510

1,520

1,440

1,330

1,250

1,060

42,037

1,401

11.8

13.14

83,380

May

1,040

1,090

995

1,000

1,230

1,290

1,520

1,860

1,980

2,370

1,660

1,250

1,040

1,010

1,230

*1,820

2,410

2,810

2,860

2,520

1,880

1,890

2,020

1,710

1,470

1,610

1,340

1,140

1,470

1,990

2,100

51,603

1,665

14.0

16.13

102,400

June

1,790

1,420

1,620

1,610

1,670

1,860

2,630

1,970

3.020

2,540

2,080

1,430

1,290

1,440

1,690

1,520

1,300

1,290

2,280

1,850

1,270

1,170

1,070

916

808

840

*1,100

1,130

944

765

46,293

1,543

13.0

14.47

91,820

July

765

874

860

753

1,780

1,570

1,02O

1,070

1,190

1,110

986

1,030

1,020

860

705

717

735

795

860

860

795

681

615

615

560

493

441

392

358

330 

525

25,163

812

6.82

7.86

49,910

Aug.

304

300

290

269

259

269

279

276

*276

273

269

269

269

273

283

290

256

233

230

233

237

237

230

227

276

293

259

227

206

209 

186

7,987

258

2.17

2.50

15,840

Sept.

177

166

156

144

140

133

129

126

129

144

416

330

221

186

169

159

146

142

137

*238

441

358

249

1,430

2,450

2.740

1,440

1,170

1,270

1,590

16,726

553

4.69

5.23

33,180

Calendar year 1955: Max 15,40O Min 168 

Water year 1955-56: Max 15,400 Mln 126

Mean 1,307 

Mean 1,235

Cfsm 11.0 In. 149.09 Ac-ft 946,200 

Cfsm 10.4 In. 141.24 Ac-ft 896,500

Peak discharge (base, 8.7OO cfs).--Oct. 25 (11 a.m. 

cfs (10.83 ft); Nov. 3 (2 a.m.) 18,20O cfs (14.27 ft)

) 21,300 cfs (15.40 ft); Oct. 29 (3 p.m.) 9.8< 

; Dec. 11 (10:30 p.m.) 21,500 cfs (15.48 ft).

Discharge measurement made this day.
134 STILLAGUAMISH RIVER BASIN

South Fork Stillaguamish River above Jim Creek, near Arlington, Wash.

Location. Lat 48°10'05", long 122"04'05", in SW£ sec. 17, T. 31 N. , R. 6 E., on right 

bank 2 miles upstream from Jim Creek and 3 miles southeast of Arlington.

Drainage area. 199 sq mi.

Records available. October 1936 to September 1956.

Gage. Water-stage recorder. Datum of gage is 80.00 ft above mean sea level, datum of 

1929. Prior to Dec. 31, 1936, staff gage at same site and datum.

Average discharge. 20 years, 1,585 cfs (1,147,000 acre-ft per year). 

Extremes. Maximum discharge during year, 23,400 cfs Dec. 11 (gage height, 24.90 ft); 

minimum, 164 cfs Sept. 7, 8 (gage height, 11.31 ft).

1936-56: Maximum discharge, 27,700 cfs Feb. 9, 1951 (gage height, 27.26 ft); minimum, 110 cfs Sept. 23, 24, 1951; minimum gage height, 10.44 ft Oct. 19, 20, 1952.

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

Ho regulation. Some diversion for domestic use.

Revisions (water years). WSP 1316: 1938-4l(M), 1943-48(M).

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

In cubic feet per second)

Oct. 25 to Sept. 30

12.1

12.5

13.0

13.5

393

615

990

1,500

14.0

15.0

16.0

2,120

3,660

5,550

11.3

11.8

12.1

12.5

13.0

13.5

14.0

160

360

490

710

1,040

1,450

1,970

15.0

16.0

17.0

19.0

21.0

23.0

3,460

5,420

7,620

12,300

16,300

20,200

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

30

31

Ibtal

Mean

Cfsm

In.

Ac-ft

Oct.

444

408 ¥08~

2,550

2,870

1,470

1,250

2,840

4,740

3,920

2,190

2,480

1,890

1,370

1,170

914

765

687

634

628

622

509

471

5,430

17,500

9,050

4,500

5,580

9,130

6,870

3,070

93,760

3,025

15.2

17.52

186,000

Nov.

2,050

3,420

19,500

14,100

5,050

5,010

2,260

*2,560

5,400

6,250

2,700

1,770

1,450

1,300

1,190

1,040

935

949

1,470

1,240

1,130

984

921

2,040

3,770

2,500

2,320

3,170

3,550

5,580

99,189

3,306

16.6

18.54

196,700

Dec.

4,480

2,300

1,670

1,370

1,220

1,300

1,430

1,260

1,390

1,240

10,100

10,000

3,140

2,100

1,740

1,590

1,410

1,290

1,550

4,740

5,060

8,560

4,440

2,600

2,470

2,390

,910

,500

,500

,140

,060

87,750

2,851

14.2

16.40

174,000

Jan.

1,010

1,020

1,560

5,980

5,260

5,260

2,160

1,610

1,540

1,200

1,240

1,580

*2 , 500

1,690

2,170

5,000

5,750

2,680

2,250

2,760

1,950

5,650

5,460

2,090

1,600

1,540

1,150

1,060

956

880

T80_

64,556

2,075

10.4

12.02

127,600

Feb.

740

760

710

660

670

650

620

600

580

600

1,100

5,000

1,700

1,100

900

760

770

720

680

650

*650

608

585

560

590

585

565

740

1,150

25,985

827

4.16

4.48

47,570

Mar.

1,300

1,600

1,800

1,290

977

857

800

806

740

680

596

596

585

545

540

545

555

644

900

1,050

1,340

2,420

5,820

3,060

2,350

2,330

1,670

1,500

2,030

2,130

1,980

41,996

1,355

6.81

7.85

83,300

Apr.

1,500

1,270

1,170

1,670

1,570

1,180

1,250

1,250

1,200

 1,550

2,260

2,440

2,720

3,170

2,830

2,190

1,760

1,750

2,370

3,590

4,260

3,860

2,910

2,320

2,220

2,250

2,120

1,900

1,830

1,540

63,700

2,123

10.7

11.90

126,300

May

1,490

1,540

1,390

1,400

1,750

1,840

2,120

2,650

2,880

3,590

2,550

1,850

1,490

1,580

1,660

2,530

3,450

*3,970

4,050

5,590

2,560

2,470

2,800

2,570

1,900

2,140

1,820

1,500

1,860

2,650

2 990

71,950

2,521

11.7

15.45

142,700

June

2,500

1,950

2,080

2,560

2,250

5,040

5,840

2,770

2,850

5,800

3,320

2,090

1,820

1,960

2,500

2,170

1,810

1,740

3,260

3,020

2,030

1,730

1,580

1,340

1,180

1,220

1,540

 1,570

1,340

1,090

65,690

2,190

11.0

12.28

130,500

July

1,050

1,180

1,180

1,020

2,010

2.580

1,460

1,400

1,560

1,550

1,510

1,530

1,390

1,220

949

935

942

1,030

1,110

1,140

1,050

955

806

782

746

656

575

525

476

445

432

35,734

1,088

5.47

6.30

66,910

Aug.

409

404

396

360

348

364

368

364

560

360

352

352

356

356

368

384

*344

316

304

504

504

300

300

292

588

456

564

312

292

300

264

10,721

346

1.74

2.00

21,260

Sept.

244

232

216

204

188

180

168

164

168

192

542

540

356

280

244

228

208

200

192

288

*668

570

576

2,020

3,590

4,580

2,200

1,690

1,840

2,600

24,948

832

4.18

4.66

49,480

Calendar year 1955: Max 19,300 Min 504 Mean 2,008 Cfsm 10.1 In. 136.98 Ac-ft 1,454,000

Water year 1955-56: Max 19,500 Min 164 Mean 1,865 Cfsm 9.56 In. 127. 4O Ac-ft 1,552,000

Peak discharge (base, 12,60O cfs). --Oct. 25 (l p.m.) 22,600 cfs (24.38 ft); Oct. 29 (6 p.m.)

16,700 , cfs (21.20 ft); Nov. 3 (4:30 a.m.) 22,100 cfs (24.07 ft); Dec. 11 (11:30 p.m.) 23,400 cfs

(24.90 ft).

* Discharge measurement made on this day.

Note. No gage-height record Jan. 30 to Feb. 21; discharge estimated on basis of recorded range In 

stage and records for North Pork Stillaguamish River near Arlington.
STILLAGUAMISH RIVER BASIN 

Jim Creek near Arlington, Wash.

135

Location. --Lat 48 0 10'25", long 122°04'05", In Wj sec. 17, T. 31 N., R. 6 E., on right 

bank at abandoned bridge, lir miles upstream from mouth and 3 miles southeast of 

Arlington .

Drainage area. --48. 9 sq mi.

Records available. --October 1937 to September 1951, September 1952 to September 1956.

Gage. Water-stage recorder. Datum of gage is 103.4 ft above mean sea level (stadia 

traverse ) .

Average discharge . --18 years {1937-51, 1952-56), 206 cfs {149,100 acre-ft per year).

Extremes . - -Maximum discharge during year, 2,920 cfs Oct. 29 (gage height, 7.52 ft); minimum, 11 cfs Sept. 8 (gage height, 1.04 ft).

1937-51, 1952-56: Maximum discharge, 4,730 cfs Dec. 28, 1949 {gage height', 9.28 ft), 

from rating curve extended above 1,900 cfs; minimum, 5.9 cfs Sept. 16, 1943 (gage 

height, 0.62 ft).

Remarks . Records good. Small diversions for irrigation and domestic use. No regulation. 

Revisions (water years 1.--WSP 1042: 1938-44. WSP 1092: 1946.

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

in cubic feet pec- second)

1.4 

1.6

Oct. I to Dec. 11

3.0 

3.5 

4.0

Dec. 12 to Sept. 30

2 .0 

2.5

340

520

720

1,200

1,780

1.0 

1.2 

1.4 

1.6 

1.8 

2 .0

9.5

18.5

32

50

75

107

2.5

3.0 

3.5 

4.0 

5.4

210

350

530

730

1,420

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tbtal

Mean

Cf sin

In.

Ac-ft

Oct.

38

32

31

186

207

109

163

282

325

346

204

188

144

105

92

78

68

60

58

55

51

47

45

159

1,140

852

640

638

1,280

1,48O

672

9,775

315

6.44

7.43

19,390

Nov.

419

613

1,740

1,020

596

426

352

*340

435

574

377

280

247

a220

al90

al80

a!70

a210

266

221

197

177

175

328

468

364

417

440

560

706

12,708

424

8.67

9.66

25,210

Dec.

1,040

576

388

304

247

229

236

221

247

224

1,190

977

486

350

285

252

215

184

248

1,050

1,100

1.420

880

606

606

530

490

385

311

263

228

15,768

509

10.4

11.99

31,280

Jan.

210

220

271

833

910

995

670

441

350

291

285

291

*524

406

564

1.170

982

682

506

638

469

738

726

494

374

308

255

226

205

186

aHO

15,390

496

10.1

11.70

30,530

Feb.

al60

a!55

al50

al50

a 140

al30

123

121

111

TTT

157

371

291

236

203

a!70

a!55

a 145

a!40

a!35

*136

142

138

136

146

162

160

205

303

4,882

168

3.44

3 .71

9,680

Mar.

413

420

522

430

323

263

233

H33

215

193

171

162

148

140

133

131

129

138

160

191

282

498

642

531

438

416

326

300

438

416

360

9,395

303

6.20

7.15

18,630

Apr.

300

260

228

233

241

208

205

210

200

*220

274

280

285

300

266

213

184

182

223

288

341

291

226

182

179

191

175

150

142

133

6,810

227

4.64

5.18

13,510

May

127

121

116

112

156

168

179

186

179

226

186

136

121

112

118

166

205

*215

213

193

140

134

148

134

114

112

105

90

93

123

144

4,572

147

3.01

3.48

9,070

June

123

105

104

142

138

324

266

199

468

436

474

294

220

198

186

164

148

136

216

329

215

179

154

133

123

116

120

116

104

95

6,023

201

4.11

4.58

11,950

July

87

86

84

76

*100

125

97

86

64

78

71

68

66

61

55

52

50

49

48

46

43

40

38

36

33

32

32

30

29 

29

28

1,839

59.3

1.21

1.40

3,650

Aug.

27

27

27

26

24

23

22

20

19

18.5

18

17.5

17

16

16

15.5

15

*14.5

14

13.5

12.5

12 .5

12.5

12.5

1*L

48

31

24

23 

24

19 

' 5

688.0

22.2

0.454

0.52

1,360

Sept.

17.5

16

14

13.5

13

13

13

12.5

12

13

45

42

29

23

19

17.5

14.5

14.5

14

26

*50

43

31

92

145

218

146

107

111

3_6§

1,693.0

56.4

1.15

1.29

3,360

Calendar year 1955 : Max 1,740 Min 19 Mean 261 Cfsm 5.34 In. 72.42 Ac-ft 188,900

Water year 1955-56 : Max 1.74O Min 12 Mean 245 Cfsm 5.01 In. 68.09 Ac-ft 177,600

Peak discharge.(base, 1,40O efs).--Oct. 25 (4:30 p.m.) 1,880 cfs (6.16 ft) ; Oct. 29 (11:15 p.m.) 

2,920 cfs (7.52 ft)5 Nov. 3 (2 a.m.) 2,560 cfs (7.07 ft) ; Dec. 11 (10:30 p.m.) 2,160 cfs (6.55 ft); 

Dec. 20 (10 p.m.) 1.74O cfs (5.94 ft); Dec. 22 (4:30 p.m.) 1,740 cfs (5.94 ft); Jan. 16 (7 p.m.) 

1,750 cfs (5.95 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for stations on nearby streams.

467Z40 O -58 - 10
136 STILLAGUAMISH RIVER BASIN

Squire Creek near Darrington, Wash.

Location. Lat 48 0 16'1S", long 121°40'00", in SE£ sec. 8, T. 32 N., R. 9 E., on left bank 

150 ft upstream from road crossing, a third of a mile upstream from Ashton Creek, and 

3f miles northwest of Darrington.

Drainage area. 18.8 sq mi.

Records available.--June 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 490 ft (from topographic map).

Average discharge. 6 years, 189 cfs (136,800 acre-ft per year).

Extremes.--Maximum discharge during year, 4,450 cfs Nov. 3 (gage height, 9.84 ft); minimum, 33 cfs Sept. 19 (gage height, 1.74 ft).

1950-56: Maximum discharge, 6,440 cfs Feb. 10, 1951 (gage height, 10.52 ft), from 

rating curve extended above 700 cfs by logarithmic plotting; minimum, 7.3 cfs Oct. 20- 

24, 1952 (gage height, 0.57 ft).

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

No regulation or diversion above station.

Revisions. MSP 1286: Drainage area.

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

In cubic feet per second) 

(Shifting-control method used Oct. 30 to Nov. 1)

Oct. 1 to Nov. 2

1.7 39

2.2 96

3.0 255

4.0 555

5.0 1,010

7.0 2,300

1.7 

2.2 

3.0 

4.0

Nov. 3 to Sept

31

71

5.0 

6.0

220

540

30

990

1,600

8.0 3,000 

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

Cfsm

In.

Ac-ft

Oct.

51

48

44

*293

231

140

199

362

451

278

190

240

184

162

130

109

98

86

79

72

66

60

56

908

2,190

618

*414

485

1,520

*693 

381

10,838

350

18.6

21.44

21,500

Nov.

285

667

*2.970

1,490

459

296

209

253

458

478

204

a!50

a!30

allO

a92

a83

a76

a85

104

88

78

67

65

128

285

178

184

268

226

166

10,332

344

18.3

20.44

20,490

Dec.

212

136

106

90

82

88

94

87

88

86

1,550

764

308

215

178

150

131

115

117

347

446

950

414

268

262

254

204

164

138

124

110

8,058

260

13.8

15.94

15,980

Jan.

106

104

127

294

276

299

209

155

*129

113

118

127

168

136

214

400

285

262

228

204

178

288

293

206

164

136

120

107

96

a90

a84

5,716

184

9.79

11.31

11,340

Feb.

a82

a82

a78

a72

66

64

61

59

56

56

67

81

68

62

53

52

52

51

49

48

48

46

46

*46

48

46

46

56

70

---___

1,711

59.0

3.14

3.38

3,390

Mar.

90

106

135

95

76

67

69

66

61

56

52

50

49

47

46

46

47

55

71

76

106

209

362

277

234

223

168

146

170

188

183

3,624

117

6.22

7.17

7,190

Apr.

153

131

118

133

127

110

112

108

Tl5

155

220

*245

276

314

282

223

188

193

251

359

456

407

326

282

273

268

242

209

188

173

6,637

221

11.8

13.13

13,160

May

168

161

148

150

193

217

259

320

341

350

262

201

170

164

206

320

435

519

530

484

*362

365

407

356

290

326

265

234

296

390

4,49

9,338

301

16.0

18.47

18,520

June

396

290

332

305

256

293

488

419

760

564

462

288

265

285

288

228

206

248

386

270

217

223

209

166

159

224

293

*237

190

166

9,113

304

16.2

18.03

18,080

July

201

^28

223

190

400

322

226

290

329

308

282

311

311

240

198

201

223

248

276

276

254

198

196

193

164

140

125

107

98

92

87

6,937

224

11.9

13.72

13,760

Aug.

79

72

66

64

64

68

67

69

69

67

68

71

70

72

79

*68

63

63

64

65

64

64

62

58

82

68

60

54

58

50

£7

2,035

65.6

3.49

4.03

4,040

Sept.

48

44

42

40

38

37

36

35

35

41

78

50

43

40

38

36

36

35

34

78

115

62

47

210

696

*701

250

229

339

395

3,898

130

6.91

7.71

7,730

Calendar year 1955: Max 2,970 Mln 33 Mean 201 Cfsm 10.7 In. 145.28 Ac-ft 145,700

Water year 1955-56: Max 2,970 Mln 34 Mean 214 Cfsm 11.4 In. 154.77 Ac-ft 155,200

Peak discharge (base, 2,200 cfs). --Oct. 25 (8:30 a.m.) 3,720 cfs (8.93 ft); Oct. 29 (3:30 p.m.)

3,000 cfs (7.92 ft); Nov. 3 (8 a.m.) 4,450 cfs ^9.84 ft); Dec. 11 (8 p.m.) 3,080 cfs (8.11 ft).

Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis 

nearby streams.

>f weather records and records for stations
STILLAGUAMISH RIVER BASIN 137

North Pork Stillaguamish River near Darrington, Wash.

Location. Lat 48°16'40", long 121°42'00", in NW£ sec. 7, T. 32 N., R. 9 E., in pier at 

left bank at highway bridge, 1 mile downstream from Squire Creek and 5 miles northwest 

of Darrington.

Drainage area.--82.2 sq mi.

Records available.--June 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 410 ft (from topographic map).

Average discharge. 6 years, 600 cfs (434,400 acre-ft).

Extremes.--Maximum discharge during year, 17,500 cfs Nov. 3 (gage height, 9.55 ft), from 

rating curve extended above 3,300 cfs by logarithmic plotting; minimum, 67 cfs Oct 3; 

minimum gage height, 0.93 ft Sept. 16-20.

1950-56: Maximum discharge, that of Nov. 3, 1955; minimum, 28 cfs Oct. 18-24, 1952 

(gage height, 0.86 ft).

Remarks.--Records good except those above 3,500 cfs, which are fair, and those for periods 

of doubtful or no gage-height record, which are poor. No regulation or diversion above 

station.

Revisions (water years). WSP 1286: 1950-52, drainage area.

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

In cubic feet per second) 

(Shifting-control method used May 21-29)

Oct. 1 to Nov. 2 Nov. 3 to Sept. 30

1.0 

1.3 

1.6 

2.0 

2.5

62

126

222

405

710

3.0 

4.0 

5.0 

6.0

1,120

2,190

3,800

5,800

0.9 

1.2 

1.5 

2.0 

3.0

70

135

227

450

1,120

4.0 2,190

5.0 3,800

6.5 7,050

8.0 11,600

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Tbtal

Mean

Cf sm

In.

Ac-ft

Oct.

80

73

71

*443

438

246

295

704

1,220

876

544

619

460

374

311

258

230

200

183

167

151

143

132

1,370

5.560

2,120

1,280

1,490

3,590

2,520

1,260

27,408

884

10.8

12.40

54,360

Nov.

868

1,130

10.800

4,720

1,830

1,290

*976

984

1,190

1,570

968

a700

a560

a480

a430

a380

a340

a350

a500

a430

a370

a320

302

493

1,020

940

805

1,100

1,120

1,030

37,996

1,267

15.4

17.19

75,360

Dec.

1,130

866

728

626

554

527

549

522

516

494

5.160

2,850

1,200

896

734

638

549

494

461

888

1,540

2,830

1,960

1,300

1,000

904

824

698

602

532

483

31,055

1,002

12.2

14.05

61,600

Jan.

445

419

419

740

968

968

896

704

572

488

*483

522

656

596

704

1.580

1,170

1,020

976

845

754

968

1,130

852

686

584

505

456

408

355

341

22,010

710

8.64

9.96

43,660

Feb.

341

341

318

280

268

253

246

234

224

224

249

332

280

253

217

203

210

d200

d200

d!95

d!95

d!90

d!90

*174

181

171

171

220

280

------

6,840

236

2.87

3.09

13,570

Mar.

375

478

538

434

350

310

305

293

272

249

234

224

217

207

207

210

217

253

297

323

402

710

1.220

1,140

928

904

722

638

704

796

796

14,953

482

5.86

6.77

29,660

Apr.

680

602

544

602

590

516

500

500

510

632

852

992

*1,120

1,290

1,210

968

803

782

984

1,350

1.720

1,600

1,250

1,040

992

1,000

928

789

710

656

26,712

890

10.8

12.09

52,980

May

638

632

590

584

698

810

928

1,150

1,220

1,240

944

722

614

584

728

1,110

1,480

1,730

1.750

1,520

1,080

*1,030

1,140

984

824

880

728

674

838

1,100

1,190

30,140

972

11.8

13.64

59,780

June

1,020

810

888

873

754

880

1,160

1,020

1.610

1,430

1,320

912

817

838

824

674

620

662

944

782

638

614

572

485

456

505

632

*584

500

434

24,261

809

9.84

10.98

48,120

July

466

538

505

445

754

641

510

572

626

590

538

560

549

456

584

379

588

408

454

429

408

546

528

518

289

257

234

210

190

178

 ig-B

15,078

422

5.15

5.92

25,940

Aug.

157

148

158

130

130

130

128

123

123

121

118

118

116

116

125

*125

118

118

116

116

113

111

109

107

155

135

116

104

109

100

91

5,744

121

1.47

1.69

7,450

Sept.

89

85

81

80

80

78

78

78

78

78

132

116

83

78

78

76

76

76

76

110

195

130

96

225

*744

930

462

388

605

817

6,296

210

2.55

2.85

12,490

Calendar year 1955: Max 10,800 Min 62 Mean 631 Cfsm 7.68 In. 104.18 Ac-ft 456,700

Water year 1955-56: Max 10,800 Min 71 Mean 668 Cfsm 8.13 In. 110.63 Ac-ft 485,000

(base. 4.400 cfs).--Oct. 25 (2:45 p.m.) 8,640 cfs (7.08 ft); Oct. 29 (5 p.m.)

t); Nov. 3 (10:30 a.m.) 17,500 cfs (9.55 ft); Dec. 11 (10 p.m.) 8,520 cfs (7.04 ft).

surement made on this day.

Peak discharge . 

6,800 cfs (6.40 ft), n ». . - VJ.«.^v, . .., J., ,

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

stations.

d Doubtful gage-height record; discharge estimated on basis of weather records and records for 

nearby stations.
138 STILLAGUAMISH RIVER BASIN

North Fork Stillaguamish River near Arlington, Wash.

Location. Lat 48°15'40", long 122°02'50", in SE^NW^ sec. 16, T. 32 N., R. 6 E., on right 

bank 6 miles northeast of Arlington, 7 miles upstream from mouth, and 8 miles downstream from Deer Creek.

Drainage area. 269 sq mi.

Records available. July 1928 to September 1956.

Gage.---Water-stage recorder. Datum of gage is 89.34 ft above mean sea level, datum of 

1929. Prior to Sept. 18, 1928, staff gage at same site and datum.

Average discharge. 28 years, 1,775 cfs (1,285,000 acre-ft per year).

Extremes.--Maximum discharge during year, 26,500 cfs Nov. 3 (gage height, 12.68 ft); minimum, 258 cfs Sept. 9 (gage height, 1.46 ft).

1928-56: Maximum discharge, 30,600 cfs Feb. 9, 1951; maximum gage height, 13.46 ft 

Feb. 10, 11, 1951; minimum discharge, 117 cfs Sept. 23, 1938; minimum gage height, 

0.97 ft Sept. 10, 12, 1944.

Remarks.--Records good except those for periods of shifting control, which are fair. 

No regulation. Small diversions for domestic use.

Revisions (water years). WSP 832: Drainage area. WSP 1286: 1938-39.

Rating table, water year 1955-56, except periods of shifting control (gage 

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

1.4 

1.7 

2.1 

2.5 

3.0 

3.5 

4.0

236

350

540

760

1,100

1,560

2,080

5.0

6.0

7.0

8.0

10.0

12.0

3,300

4,860

6,900

9,300

15,400

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

Total

Mean

Cfsm

In.

Ac-ft

Oct.

393

359

367

2,710

2,560

1,260 

1,200

2,320

4,120

3,610

1,990

2,090

1,630

1,240

1,050

901

802

736

694

652

605

565

525

3,030

15 , OOP

7,980

4,160

4,660

8,910

8,870

4,180

89,169

2,876

10.7

12.33

176,900

Nov.

2,810

3,520

21.700

12 , 600

5,620

3,570 

2,810

2,820

*3,720

5,420

3,220

2,320

1,950

1,700

1,540

1,450

1,520

1,380

2,360

1,950

1,710

1,480

1,420

2,350

3,870

3,180

2,880

3,780

4,070

3,980

112,500

3,750

13.9

15.55

223,100

Dec .

4,560

2,990

2,320

1,970

1,780

1,870 

2,060

1,820

1,860

1,760

11,200

11,300

3,810

2,660

2,170

1,880

1,660

1,420

1,560

4,320

5,190

9,100

5,450

3,290

2,910

2,740

2,440

1,970

1,670

1,520

1.570

102,620

3,310

12.3

14.19

203,500

Jan.

1,320

1,320

1,580

4,220

3,620

3,900 

2,830

2,090

1,720

1,520

1,580

1,830

2,780

2,160

2,430

*5.810

4,080

3,300

3,100

3,160

2,540

3,940

3,980

2,720

2,090

1,750

1,510

1,370

1,240

1,090

985

77,565

2,502

9.30

10.72

153,800

Feb.

936

936

929

880

915

868 

862

832

796

814

1,220

1,950

1,220

1,010

850

814

832

796

760

742

748

756

*706

694

760

754

760

964

1,320

------

26,384

910

5.38

3.65

52,350

Mar.

1,770

2,020

2,140

1,670

1,280

1,090 

1,080

1,090

1,010

915

856

858

814

778

790

802

852

957

1,180

1,520

1,640

2,720

5.950

3,480

2,720

2,700

2,110

1,980

2,600

2,620

2,460

52,192

1,684

6.26

7.22

103,500

Apr.

1,990

1,760

1,610

2,100

1,950

1,590 

1,720

1,700

*1,640

1,940

2,560

2,790

3,100

3,520

3,370

2,670

2,210

2,110

2,640

5,550

4,560

4,510

3,430

2,820

2,660

2,680

2,520

2,170

1,980

1,830

75,480

2,516

9.35

10.44

149,700

May

1,780

1,850

1,680

1,680

2,180

2,210 

2,500

3,070

3,270

3,520

2,780

2,100

1,790

1,700

1,990

2,920

5,780

4,420

4,560

4,210

5,140

3,070

*3,360

2,960

2,480

2,660

2,230

2,000

2,400

3,050 

5,330

84,670

2,731

10.2

11.71

167,900

June

2,940

2,400

2,540

2,700

2,540

2,790 

5,470

2,780

5.520

4,370

4,160

2,790

2,380

2,410

2,600

2,090

1,870

1,870

2,960

3,210

2,190

1,930

1,770

1,560

1,440

1,460

1,740

1,720

1,520

1,350

74,650

2,488

9.25

10.32

148 , 100

July

1,300

1,460

1,410

1,240

2,100

2,180 

1,570

1,540

1,660

1,650

1,450

1,440

1,470

1,310

1,080

1,040

1,020

1,050

1,090

1,120

1,060

985

894

862

826

760

754

652

615

585 

560

56,755

1,185

4.41

5.08

72,860

Aug.

540

550

515

480

460

455 

450

450

*450

450

445

440

440

445

480

495

450

421

412

412

407

402

402

393

570

575

465

416

421

426 

376

14,073

454

1.69

1.95

27,910

Sept.

354

330

314

302

283

272 

268

265

265

283

455

540

380

338

310

299

287

276

272

346

756

646

445

*1,170

2,270

5,020

1,800

1,940

2,150

5,510

24,146

805

2.99

3.54

47,890

Calendar year 1955: Max 21,700 Mln 280 Mean 2,218 Cfsm 8.25 In. 111.91Ac-ft 1,605,000

Water year 1955-56: Max 21,700 Mln 265 Mean 2,104 Cfsm 7.82 In. 106.50Ac-ft 1,527,000

Fealc discharge (base. 11.500 cfs) . Oct. 25 (7 p.m.) 21,600 cfs (11.56 ft); Oct. 29 (10 p.m.) 

16,400 cfs (10T26 ft); Nov. 3 (12:50 p.m.) 26,500 cfs (12.68 ft); Dec. 11 (10:50 p.m.) 24,700 cfs 

(12.27 ft)j Dec. 22 (4:30, 5:15 p.m.) 11,600 cfs (8.84 ft).

* Discharge measurement made on this day.

Note. Shifting-control method used Oct. 27, 28, Oct. 51 to Nov. 2, Nov. 5 to Dec. 11, Dec. 13-21, 

Dec. 23 to Mar. 19.
STILLAGUAMISH RIVER BASIN 139

Armstrong Creek near Arlington, Wash.

Location. Lat 48°13'15", long 122°08'00", in NW£ sec. 35, T. 32 N., R. 5 E., on right 

bank at Northern Pacific Railway culvert, 1 mile north of Arlington.

Drainage area. 7.33 sq mi.

Records available. June 1950 to September 1951, September 1952 to September 1956.

Gage.--Water-stage recorder and wooden control on concrete base. Datum of gage is 56.6 ft 

Tstadia traverse).

Average discharge.--5 years, 15.7 cfs (11,370 acre-ft per year).

Extremes. Maximum discharge during year. 63 cfs Dec. 1 (gage height, 1.03 ft); minimum, 

1.7 cfs Sept. 4 (gage height, 0.19 ft).

1950-56: Maximum discharge not determined, probably occurred sometime in December 

1953;'minimum, 1.2 cfs Sept. 14, 1951; minimum gage height, 0.14 ft July 5, 1951 (from 

outside gage, control leaking).

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

No regulation or diversion above station.

Revisions.--WSP 1286: Drainage area.

Hating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Oct. 31 to Nov. 14)

.5

.7

1.0

1.8

3.6

10

ZZ 

50

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

Day

1

2

3

4

5

6

7

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

In.

Ac -ft

Oct.

5.4

5.1

*5.1

15

12.5

9.7

11

16

15

19

14.5

12

10.5

9.7

8.9

8.9

8.5

8.1

8.5

8.5

8.1

7.7

7.3

9.3

23

37

34

33

35

39

45

488.3

15.8

2.16

2.48

969

Nov.

39

37

42

*42

43

35

29

30

31

44_

41

31

27

22

19.5

18

18

19.5

27

23

21

20

24

27

31

39

39

39

37

36

931.0

31.0

4.23

4.72

1,850

Dec.

50

35

37

32

28

27

27

25

24

26

33

31

36

31

28

29

25

22

28

36

38

36

38

31

34

37

34

31

27

24

22

962

31.0

4.23

4.88

1,910

Jan.

22

23

25

28

31

34

33

30

28

26

24

*23

29

28

30

30

33

30

30

30

29

29

29

32

30

28

25

24

23

21

20

857

27.6

3.77

4.35

1,700

Feb.

19

18

T9

19

21

21

24

22

20

21

30

33

30

28

*24

21

21

21

21

23

27

28

27

27

27

28

28

28

30

______

706

24.3

3.32

3.58

1,400

Mar.

28

30

28

31

31

28

28

28

28

27

24

23

23

23

21

21

20

20

20

21

26

27

27

25

24

24

23

24

28

27

24

782

25.2

3.44

3.97

1,550

Apr.

24

22

21

*21

20

18

18

17 .5

17

16

16

15.5

14.5

14.5

13.5

14.5

13.5

13

12.5

12.5

12

12

11.5

11

11.5

10.5

10

10

10

10

443.0

14.8

2.02

2.25

879

May

9.7

9.7

9.3

8.9

10.5

10

8.9

8.5

8.1

11

11

9.7

8.9

8.5

7.7

7.7

*7.3

6.6

6.3

6.0

6.0

6.0

6.0

6.0

6.0

5.7

5.7

5.7

5.7

5.7 

5.7

239.5

7.73

1.05

1.22

475

June

5.7

5.4

eTTf

8.5

9.7

9.7

7.7

6.6

10.5

15

13

8.5

7 .4

7.3

9.0

10

8.5

7.7

12

14.5

11

9.7

8.1

7.3

7.3

7.0

6.3

6.0

*5.7

5.4

257.2

8.57

1.17

1.30

510

July

5.1

4.8

4.8

4.8

5.4

6.3

577

5.1

4.8

4.6

4.8

4.8

4.8

4.6

4.3

4.0

3.6

376

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.8

3.6

3.6

'

133.1

4.29

0.585

0.68

264

Aug.

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

*3.8

3.8

3.8

3.6

3.8

4.0

4.6

4.0

3.8

3.8

3.6

3.6

3.6

3.6

3.4

4.8

4.3

4.0

3.6

3.6

3.6 

3.6

118.5

3.82

0.521

0.60

235

Sept.

3.4

3.2

3.4

3.2

3.2

3.4

3.4

3.2

3.0

3.0

4.9

4.0

3.6

3.6

3.4

3.4

3.2

3.2

3.2

3.8

*3.8

3.6

3.4

4.3

4.3

5.4

5.1

5.1

5.1

7.0

115.8

3.86

0.527

0.59

230

Calendar year 1955: Max 50 Min 4.8 Mean 19.5 Cfsm 2.66 In. 36.19 Ac-ft 14,160

Water year 1955-56: Max 50 Min 3.0 Mean 16.5 Cfsm 2.25 In. 30.62 Ac-ft 11,970

* Discharge measurement made on this day.

Note. No gage-height record Dec. 27 to Jan. 11, Aug. 2-9j discharge 

records and records for stations on nearby streams.

stimated on basis of weather
140 STILLAGUAMISH RIVER BASIN

Pilchuck Creek near Bryant, Wash.

Location. Lat 48 t> 16'00", long 122°09'45", In NE£ sec. 16, T. 32 N., R. 5 E. , on right bank 

500 ft upstream from highway bridge and 2 miles north of Bryant.

Drainage area.--49.7 sq mi.

Records available.--March 1929 to September 1931, June 1950 to September 1951, September 

1952 to September 1956.

Gage. Water-stage recorder. Datum of gage is 119.8 ft above mean sea level (stadia traverse). Prior to Oct. 1, 1931, staff gage at site 100 ft downstream at different datum.

Average discharge.--7 years (1929-31, 1950-51, 1952-56), 272 cfs (196,900 acre-ft per year).

Extremes.--Maximum discharge during year, 3,570 cfs Nov. 3 (gage height, 6.04 ft); minimum, 

2.4 cfs Aug. 23, 24, 25 (gage height, 1.46 ft).

1929-31, 1950-56: Maximum discharge, 4,370 cfs Feb. 8, 1955 (gage height, 6.54 ft); 

minimum observed, 0.5 cfs Aug. 29 to Sept. 1, 1931 (gage height, 0.90 ft, site and datum 

then in use).

Remarks.--Records good except those below 10 cfs, which are fair. No regulation or diversion above station.

Revisions (water years).--WSP 1316: Drainage area, 1930-31(M).

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

In cubic feet per second) 

(Stage-discharge relation affected by Ice Jan. 31 to Feb. 3)

Oct. 1 to Jan. 15 Jan. 16 to Sept. 3O

1.8 25

2.0 50

2.3 115

2.6 220

3.0 410

3.7 880

4.5 1,600

5.5 2,790

1.4

1.5

1.6 

1.8 

2.0 

2.3

1.2

3.6

8.5

25

54

126

2.6 235

3.0 435

3.5 750

4.0 1,150

5.0 2,160

Discharge, In cubic feet per second, water year October 1954 to September 1955

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

37

30

32

618

540

193

208

536

848

832

377

388

282

212

175

153

130

115

107

102

89

81

74

383

1,730

1,050

755

870

1,510

1,240 

779

14,476

467

9.40

10.83

28,710

Nov.

525

696

2,530

1,080

564

388

296

360

*735

815

421

287

220

190

160

140

127

134

340

296

244

205

193

620

908

632

648

660

864

1,270

16,548

552

11.1

12.38

32,820

Dec.

1,370

667

471

330

274

292

421

345

345

320

1,940

1,100

489

335

269

236

205

171

T9T

1,040

1,070

1,350

751

590

709

625

507

366

282

236 

205

17,508

565

11.4

13.10

34,730

Jan.

209

278

421

1,350

1,070

1,240

730

471

350

287

*345

394

814

477

585

2,080

1,090

964

806

1,030

667

1,090

964

597

424

337

270

235

199

173 

170

20,117

649

13.1

15.05

39,900

Feb.

140

120

115

112

126

132

169

169

139

142

380

704

337

244

203

219

199

148

129

129

145

155

*142

136

148

158

162

332

453

5,887

203

4.08

4.41

11,680

Mar.

667

609

729

471

327

253

231

248

211

184

162

148

142

132

13^

148

162

223

313

353

615

988

1,110

714

573

579

396

469

828

722 

603

13,446

434

8.73

10.06

26,670

Apr.

429

337

303

504

459

*308

353

348

337

441

483

447

465

471

374

270

244

279

327

379

407

337

266

223

231

223

195

142

139

139

9,860

329

6.62

7.38

19,560

May

145

145

126

136

250

203

199

211

191

219

152

109

98

101

139

176

*207

211

203

169

112

118

132

118

86

101

72

68

96

132

126

4,551

147

2.96

3.41

9,030

June

101

96

91

136

120

120

230

160

585

564

532

231

169

169

158

155

126

115

223

266

173

132

115

96

91

88

93

84

68

.§§

5,353

178

3.58

4.01

10,620

July

58

58

52

46

119

158

98

70

58

49

42

38

35

31

28

25

22

18

16.5

15.5

14

12.5

10.5

8.5

6.8

6.2

5.8

4.8

4.4

474

4.4

1,119.3

36.1

0.726

0.84

2,220

Aug.

4.4

5.3

6.8

6.8

5.8

4.8

4.4

4.4

4.0

3.6

3.3

3.3

3.3

3.0

*4.O

5.3

5.8

4.8

4.0

3.6

3.0

2.7

2.4

2.4

25

32

14.5

10.5

9.1

26

14.5

232.8

7.51

0.151

0.17

462

Sept.

10.5

7.9

6.2

5.8

5.3

4.4

4.0

475

4.0

4.0

26

51

22

14

10.5

8.5

7.3

6.2

5.8

7.9

38

40

22

*205

250

312

161

358

346

4:50

2,397.3

79.9

1.61

1.79

4,750

Calendar year 1955: Max 2,530 Mln 8.5 Mean 341 Cfsm 6.86 In. 93.26 Ac-ft 247,200

Water year 1955-56: Max 2,530 Mln 2.4 Mean 305 Cfsm 6.14 In. 83.43 Ac-ft 221,200

Peak discharge (base, 2,500 cfs, revised). --Oct. 25 (8:30 p.m.) 2,860 cfs (5.55 ft); Oct. 29 (2:30

p.m.)., 2,780 cfs (5.49 ft); Nov. . 3 (9:30 a.m.) .. 3,570 cfs (6.04 ft); Dec. 11 (12 m. ) 2,650 cfs (5.39

ft); Jan. 16 (5:30 p.m.) 3,260 cfs (5.83 ft).

* Discharge measurement made on this day.
SKAGIT RIVER BASIN 141

Skagit River at international boundary, near Hope, British Columbia 

(International gaging station)

Location. Lat 49°00'05", long 121°04'15", on left bank 300 ft upstream from international 

boundary and 31 miles southeast of Hope, British Columbia.

Drainage area.--381 sq mi.

Records available.--December 1953 to September 1956 (gage heights only).

Gage.--Water-stage recorder. Datum of gage is 1,583.44 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947; 1,584.07 ft above city of Seattle 1936 datum; 

and 1,581.65 ft above city of Seattle Ross Dam datum. Prior to Apr. 15, 1955, staff 

gage 300 ft downstream at international boundary at present datum.

Extremes. Maximum daily gage height during year, 18.27 ft Aug. 15; minimum daily, 

 3.21 ft Mar. 18.

1953-56: Maximum gage height observed, 18.37 ft Aug. 23, 1954; minimum observed, 

1.25 ft Mar. 5, 1955.

Remarks.--No diversion above station. Gage height subject to backwater from Ross Reservoir.

Cooperation.--This station is maintained by Canada under agreement with the United 

States.

Mean 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.

13.32

13. OS

12.72

12.32

11.90

11.52

11.09

10.97

11.28

11.36

10.95

10.56

10.17

9.85

9.75

9.72

9.61

8.90

8.13

7.88

7.52

7.17

6.89

6.81

 9734

11.94

12.30

11.86

11.46

11.12

10.64

Nov.

9.86

9.10

9.62

12.34

13.84

13.92

13.20

_

-

11.02

10.30

9.44

8.76

8.68

8.55

8.28

8.05

7.81

7.70

7.62

7.41

7.09

6.79

6.60

7.60

6.40

6.29

6.13

5.89

5.63

Dec.

5.44

5.30

5.16

5.05

4.95

4.85

4.75

4.69

4.60

4.52

4.55

5. OS

4.87

4.61

4.57

4.58

4.50

_

-

4.39

4.47

4.55

4.58

4.50

4.43

4.42

4.40

4.32

4.25

4.19

4.15

Jan.

_

-

_

-

-

_

-

-

-

-

_

-

-

3.89

-

3.84

3.82

3.82

3.83

3.83

3.80

3.78

3.81

3.80

3.77

3.73

_

3.69

3 . 61

Feb.

3.47

3.46

3.50

3.51

5.55

3.52

3.48

3.47

3.44

3.45

3.44

3.46

3.46

3.44

3.36

3.33

3.32

3.34

3.34

3.32

3.31

3.31

3.30

3.30

3.30

3.30

3.30

3.31

3.29

Mar.

3.30

3.30

3.35

3.35

3.30

3.30

3.30

3.30

3.30

3.29

3.28

3.35

3.29

3.25

3.23

3.22

3.22

3,21

3.22

3.25

3.27

3.30

3.40

3.49

3.55

3.60

3.61

3.63

3.68

3 79

3 '.86

Apr.

3.92

3.93

3.93

4.00

4.09

4.09

4.06

4.10

4.14

4.33

4.67

5.01

5.45

6.05

6.78

6.92

6.75

6.73

6.94

7.35

7.87

8.35

8.48

¥725

8.02

7.98

7.91

7.80

7.58

7.40

May

7.25

7.12

6.96

6.83

6.60

6.86

7.10

7.58

8.06

8.41

8.47

8.15

7.82

7.63

7.65

8.00

8.67

9.26

9.68

9.77

9.63

9.36

9.40

9.39

9.21

9.18

8.97

8.69

8.60

8. 96

9.43

June

9.83

9.36

9.03

9.02

8.59

8.00

7.63

7.42

7.89

8.54

8.66

8.10

7.73

7.64

7.76

7.69

7.55

7.52

7.99

8.20

7.89

7.76

7.70

7.59

7.44

7.30

TT60

8.01

8.10

July

8.25

8.60

8.94

9.38

9.95

10.56

11.04

11.38

11.77

12.45

13.70

15.16

16.69

17.70

17.72

17.50

17.56

17.72

17.88

17.99

17.80

17.66

17.61

17.86

18.06

18.14

18.20

18.18

18.22

is!l9

Aug.

18.21

18.15

18.10

18.05

18.17

18.20

18.20

18.20

18.20

18.20

18.18

18.23

18.21

18.22

18.27

18.18

18.15

18.19

18.25

18.15

18.17

18.20

18*19

18.16

18.15

18.25

18.15

18.03

17.94

17.90

17.69

Sept.

17.73

17.87

18.01

17.95

17.71

17.45

17.21

17.00

16.84

16.68

16.40

16.10

15.85

15.57

15.40

15.17

15.00

14.65

14.36

14.06

13.78

13.50

13.23

13.11

12.94

13.18

13.43

13.32

13.28

13.60
142 SKAGIT RIVER BASIN

Ruby Creek below Panther Creek, near Newhalem, Wash.

Location. --Lat 48°42'30", long 1CO°S8'10", in NW^ sec. 10, T. 37 N., R. 14 E. (unsurveyed), 

on right bank 200 ft downstream from Panther Creek, 4 miles upstream from mouth, and 

13 miles northeast of Newhalem.

Drainage area.--199 sq mi.

Records available.--September 1948 to September 1956 (discontinued).

Sage.--Water-stage recorder. Altitude of gage is 1,640 ft (by barometer).

Average discharge.--8 years, 744 cfs (538,600 acre-ft per year).

Extremes.--Maximum discharge during year, 6,240 cfs Oct. 25 (gage height, 9.25 ft); minimum daily, 80 cfs Mar. 16, 17.

1948-56: Maximum discharge, 8,640 cfs Nov. 27, 1949 (gage height, 10.95 ft), from 

rating curve extended above 5,600 cfs; minimum, 46 cfs Feb. 10, 1949, Nov. 28, 1952; 

minimum gage height, 0.70 ft Feb. 10, 1949.

Remarks.--Records good except those below 300 cfs, which are fair, and those for periods 

of doubtful or no gage-height record, which are poor. No regulation or diversion above 

station.

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

in cubic feet per second) 

(Shifting-control method used Mar. 25 to June 17)

1.5 

3.5 

4.0 

6.0 

8.0

65

410

1,180

3,810

4,850

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

Of sm

In.

Ac-ft

Oct.

98 

"9T 92

136

146

122

119

172

262

240

170

164

181

251

346

293

310

332

321

*300

265

237

216

771

4.430

2,230

1,320

1,030

958

922

755

17,281

557

2.80

3.23

34,280

Nov.

650 

590

2,490

5,540

2,330

1,590

1,360

1,130

1,190

1,810

1,300

970

870

800

740

680

640

610

575

526

486

454

434

422

422

394

366

352

338

532

28,291

943

4.74

5.29

56,110

Dec.

*324 

307

293

286

279

276

268

258

251

240

369

544

374

324

315

310

300

290

285

280

293

335

318

293

282

279

272

254

240

237 

757

9,213

297

1.49

1.72

18,270

Jan.

237 

230

220

226

220

*216

209

195

118

184

178

174

181

174

170

167

164

167

167

156

153

150

153

146

143

140

140

140

137

135

155

5,595

1/4

0.874

1.01

10,700

Feb.

150 

T30

130

128

126

124

122

120

118

116

114

114

112

110

110

110

107

105

T55

105

105

105

105

105

105

110

115

*120

122

3,328

115

0.578

0.62

6,600

Mar.

125 

128

130

115

105

96

90

90

90

85

85

85

83

82

81

80

83

82

86

90

95

105

128

156

132

142

*174

167

170

184

192

5,513

113

0.568

0.66

6,970

Apr.

184 

181

184

202

198

184

181

188

216

276

565

482

675

880

952

840

720

760

940

1,500

1,860

2.180

1,940

1,570

1,440

1,490

 1,430

1,280

1,160

1,070

25,326

844

4.24

4.73

50,250

May

994 

904

855

825

810

865

1,070

1,450

1,750

2,110

1,850

1,520

1,330

1,280

1,480

2,070

2,860

3,750

4,050

4,090

5,770

5,550

5,740

5,850

5,450

5,410

2,990

2,860

5,080

5,780

4,750

75,065

2,421

12.2

14.03

148,900

June

4,750 

3,740

3,580

5,590

2,680

*2,270

2,000

1,870

2,550

2,860

2,650

2,220

2,050

2,210

2,570

2,210

2,050

2,550

3,830

3,000

2,440

2,540

2,290

2,120

1,950

1,870

2,310

2,470

2,130

1,850

76,080

2,556

12.7

14.22

150,900

July

1,820 

1,900

1,860

1,760

1,940

1,940

1,760

1,960

2,280

2,500

2,520

2,420

2,290

1,990

1,670

1,550

1,450

1,520

 1,650

1,680

1,540

1,580

1,240

1,200

1,160

1,020

916

800

715

675

640

49,346

1,592

8.00

9.22

97,880

Aug.

625 

670

600

550

510

510

514

518

514

510

502

498

514

555

665

730

560

494

482

486

490

470

446

454

458

450

*402

570

566

542

521

15,476

499

2.51

2.89

50,700

Sept.

314 

300

272

257

212

195

188

195

198

251

279

265

258

248

254

212

195

192

198

209

251

216

188

254

326

690

555

406

434

560

8,512

284

1.43

1.59

16,880

Calendar year 1955: Max 4,500 Min 59 Mean 694 Cfsm 3.49 In. 47.34 Ac-ft 502,400

Water year 1955-56: Max 4,730 Min 80 Mean 866 Cfsm 4.35 In. 59.21 Ac-ft 628,400

ui o \ f -Lt. 4. u / , i'ldy J.3 ^j. a.m.j t ,jw U.L B 1/.D.L 4. t ^ , Wet y JJ. ^-L-L y.iu. y a, o iu wi a ^ o . jo * *>}, UUILC

(11 a.m.) 4,300 cfs (7.50 ft).

* Discharge measurement made on this day.

Note.--Ho gage-height record Nov. 14-18, Jan. 25 to Feb. 28; doubtful gage-height record Dec. 

FelT. 2~9 to Mar. 22; discharge estimated on basis of weather records and records for stations on 

nearby streams.

15-20,
SKAGIT RIVER BASIN 143

Ross Reservoir near Newhalem, Wash. 

(International gaging station)

Location. Lat 48°44 I 00", long 121°04i10", in SE£ sec. 35, T. 38 N., R. 13 E., at Ross Dam 

on Skagit River, 1 mile dovmstream from Ruby Creek and 9 miles northeast of Newhalem.

Drainage area.--980 sq mi, approximately.

Records available.--March 1940 to September 1956. Prior to October 1945, published as 

Ruby Reservoir near Newhalem. Prior to October 1946, monthly elevations and contents 

only.

Gage.--Water-stage recorder. Datum of gage is at mean sea level (city of Seattle benchmark). Prior to Sept. 24, 1940, staff gage on west shore at site just uplake from Ross 

Dam at same datum. Sept. 24, 1940, to June 28, 1943, water-stage recorder at present 

site and datum. June 29, 1943, to Apr. 29, 1948, staff gage on right bank at site 

500 ft uplake from dam at present datum.

Extremes. Maximum contents during year, 1,405,300 acre-ft July 31, Aug. 1, 6, 19, 22, 26, 

27 (elevation, 1,600.00 ft); minimum, 470,270 acre-ft Apr. 13 (elevation, 1,492.99 ft).

1940-56: Maximum contents observed, 1,406,500 acre-ft Aug. 23, 1954 (elevation, 

1,600.10 ft, from plant log); minimum not determined.

Remarks. Reservoir is formed by concrete dam completed to elevation 1,615 ft in 1949; 

sTorage began Mar. 11, 1940. Capacity, 1,202,920 acre-ft between elevations 1,250 ft 

(lowest outlet) and 1,582 ft (spillway crest). Dead storage negligible. Water used 

for power and to supplement low flow of Skagit River through city of Seattle's Diablo 

and Newhalem powerplants. Figures given herein represent total contents.

Cooperation. Elevation records collected in cooperation with city of Seattle. 

station~is maintained by the United States under agreement with Canada.

Capacity table (elevation, In feet, and contents, In acre-feet)

(Prepared by Geological Survey on basis of 15 contour

areas furnished by city of Seattle)

This

1,490

1,510

1,530

1,550

454,480

571,110

718,200

888,320

1,570

1,590

1,600

1,078,800

1,291,700

1,405,300

Elevation, in 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

IS

OOt.

594.35

594.11

593.59

593.17

592.77

592.30

591.80

592.06

592.38

592.03

591.54

591.18

590.74

590.41

590.43

590.35

590.07

589.72

589.51

589.15

588.80

588.43

588.18

588.54

592.76

594.00

593.92

593.35

592.96

592.71 

592.04

1,314

-30,400

Nov.

591.09

590.31

592.23

595.19

595.83

595.56

594.60

593.64

592.78

592.60

591.75

590.76

590.42

590.26

589.96

589.72

589.39

589.18

589 . 14

589.12

588.63

588.25

587.75

587.84

587.67

587.47

587.36

586.84

586.46

586.00

1,247.5 

-66,500

Dec.

585.60

585.16

584.77

584.43

583 . 83

583.36

582.92

582.42

581.95

581.59

581.76

581.55

581.18

580.77

580.32

579.87

579.49

579.10

578.54

578.15

577.92

577.91

577.64

577.43

577.40

577.20

576.77

576.22

575.67

575.14 

574.80

1,128.1 

-119,400

Jan.

574.47

574.00

573.46

572.91

572.35

571.78

571.32

571.04

570.30

569.61

569.08

568.48

567.80

567.33

566.90

566.25

565.62

565.00

564.36

563.77

563.30

562.88

582.16

561.51

56O.80

560.02

559.25

558.62

557.99

556.97 

556.09

943.9 

-184,200

Feb.

555.20

554.34

553.53

552.80

552.45

551.59

550.83

550.02

549.20

548.34

547.65

547.30

546.35

545.43

544.32

543.29

542.35

541.47

540.93

539.76

538.84

538.25

537.14

536.10

535.24

534.69

533.60

532.80

531.68

731.89 

-212 , 000

Mar.

530.77

529.72

528.84

528.25

527.09

525.95

524.86

523.94

522.94

522.05

521.43

520.05

518.98

517.87

516.82

516.13

515.44

515.59

514.29

513.26

512.25

511.03

510.18

509.78

509.32

508.25

507.30

506.24

505 . 15

504 . 18 

503.60

530.59 

-201,300

Apr.

503.04

501.83

500.70

499.64

498.67

497.60

497.05

496.60

495.47

494.61

493.98

493.32

493.00

493.40

494.97

495.28

495.50

495.85

496.47

497.36

499.53

502 . 26

504.23

506.06

507.51

508.82

509.13

509.59

509.89

509.96

571.11 

+40,520

May

510.24

509.81

509.98

509 . 93

510.48

510.70

511.13

512.11

513.62

515.39

517.14

518.16

518.97

519.39

519.92

521.25

523.34

526.79

530.90

534 . 93

538.01

540.71

543.44

546.35

549.07

551.58

553.73

555.37

557.15

559.68

562.62

1,005.6 

+434, 500

June

565.62

567.33

569.00

570.52

571.24

571.44

571.41

571.73

573.13

575.02

576.38

577.08

577.54

578.25

578.89

579.56

580.10

580.61

581.91

582.95

583.56

584.18

584.76

585.19

585.44

585.71

586.42

587.45

588.18

588.79

1,278.4 

+272, 8(30

July

589.44

589.94

590.42

591.00

591.65

592.30

592.72

593.16

593.46

594.62

595.92

597.62

598.94

599.50

599.30

599.17

599.35

599.53

599.64

599.60

599.40

599.29

599.40

599.57

599.84

599.82

599.80

599.88

599.92

599.86 

599.82

1,403 

+ 124,600

Aug.

599.80

599.72

599.67

599.78

599.90

599.85

599.87

599.88

599.88

599.82

599.88

599.94

599.83

599.92

599.88

599.81

599.80

599.93

599.90

599.78

599.86

599.83

599.80

599.76

599.82

599.86

599.70

599.60

599.56

599.43 

599.31

1,397.2 

-5,800

Sept.

599.44

599.68

599.73

599.50

539.25

598.94

598.70

598.54

598.43

598.14

597.87

597.60

597.30

597.05

596.86

596.74

596.40

596.06

595.76

595.45

595.17

594.89

594.77

594.45

594.57

594.99

594.95

594.72

595.01

595.39

1,352.4 

-44,800

Calendar year 1955...................... * -19,900

Water year 1955-56...................... * +8,000

t Contents, in thousands of acre-feet, at end of month.

* Change in contents In acre-feet.

Note. Add 1,000.00 ft to obtain elevation above mean sea level.
144 SKAGIT RIVER BASIN

Thunder Creek near Newhalem, Wash.

Location. Lat 48°40'20", long 121°04'20", in SEy sec. 23, T. 37 N., R. 13 E. (unsurveyed), 

on right bank half a mile upstream from' backwater from Diablo Reservoir, 8 miles east 

of Newhalem, and 20 miles northeast of Marblemount.

Drainage area. 98 sq mi, approximately.

Records available.--October 1930 to September 1956. Published as "above Colonial Creek, 

near Marblemount" 1930-31.

Gage. Water-stage recorder. Altitude of gage is 1,220 ft (from river-profile map). 

Average discharge. 26 years, 614 cfs (444,500 acre-ft per year).

Extremes.--Maximum discharge during year, 10,800 cfs Oct. 25 (gage height, 12.68 ft), from 

rating curve extended above 2,900 cfs on basis of logarithmic plotting; minimum, 68 cfs 

Mar. 1, 11 (gage height, 1.62 ft).

1930-56: Maximum discharge, that of Oct. 25, 1955; minimum not determined, probably 

less than 50 cfs during period of ice effect or no gage-height record in February 1936.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are good. No regulation or diversion above station.

Revisions (water years).--WSP 1012: 1943. WSP 1286: 1931(M), 1932, 1933(M), 1935(M), 

1938-39(M), 1941-42JM), 1944-46 (M), 1950 (M), 1952 (annual runoff in acre-feet).

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

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

1.6 

2.0 

2.5 

3.0 

4.0

66

109

193

303

610

5.0 

6.0 

7.5 

9.0 

11.0

1,050

1,640

2,910

4,610

7,630

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

Day

1

2

3

4

5

6

7

8

9

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.

243

277

265

378

303

254

256

298

381

333

261

291

318

486

610

448

496

502

*451

373

313

274 

247

1,610

7,240

2,260

1,210

1,000

995

990

734

24,097

111

7.93

9.14

47,800

Nov.

591

526

2,760

5,150

1,500

1,000

770

784

1,200

1,940

985

702

606

558

a500

a400

a370

a360

357

313

295

274 

258

270

296

265

247

241

232

* 228

21,956

732

7.47

8.33

43,550

Dec.

219

205

195

189

185

182

180

174

169

165

301

618

587

306

284

261

252

241

236

254

254

328 

316

279

256

241

228

211

195

J' 8 ?

182

7,665

247

2.52

2.91

15,200

Jan.

176

172

172

*174

172

170

160

151

142

159

157

136

141

137

137

139

139

141

137

154

151

134 

136

133

126

119

119

116

112

b!05

b!02

4,339

140

1.43

1.65

8,610

Feb.

blOO

blOO

blOO

b99

b98

97

96

95

94

93

94

95

93

92

b8_0

b85

b87

b86

85

84

84

83 

83

82

82

81

81

81

*81

2,591

89.3

0.911

0.98

5,140

Mar.

85

88

90

85

84

78

79

79

79

77

74

75

75

74

73

7273"

75

77

78

83

87 

108

119

125

129

*125

117

117

120

125

2,823

91.1

0.930

1.07

5,600

Apr.

125

122

122

128

131

125

123

122

129

153

203

268

359

473

533

550

470

464

533

698

955

1,100 

1,600

838

766

766

722

642

*587

543

13,750

458

4.67

5.22

27,270

May

502

467

456

412

406

427

533

738

918

1,060

905

730

622

583

678

941

1,350

1,870

2,080

2,080

1,740

1,590 

1,770

1,750

1,580

1,610

1,420

1,360

1,450

1,840

2,390

36,218

1,168

11.9

13.74

71,840

June

2,460

1,860

1,850

1,720

*1,300

1,060

955

1,010

1,840

2,160

1,740

1,280

1,150

1,200

1,370

1,220

1,140

1,300

2,220

1,780

1,380

1,310 

1,270

1,160

1,060

1,180

1,650

1,680

1,380

1,180

43,865

1,462

14.9

16.65

87,000

July

1,200

1,240

1,220

1,200

1,460

1,520

1,320

1,490

1,920

2,070

2,160

2,540

2,540

2,100

1,760

1,600

1,580

*1,830

2,220

2,510

2,450

2,130 

1,920

1,920

1,820

1,570

1,410

1,160

1,070

1,040

195

52,965

1,709

17.4

20.10

105,100

Aug.

936

856

754

694

T66

828

882

928

955

990

1,040

1,120

1,220

1,380

1,610

1,390

1,140

1,100

1,200

1,310

1,400

1,500 

1,240

1,170

1,180

1,120

1,020

887

980

855

*820

53,049

1,066

10.9

12.54

65,550

Sept.

905

754

618

556

499

502

595

610

610

702

710

654

678

698

678

618

630

718

742

738

642

473 

470 '9"9"0~

1,540

2.270

1,200

905

1,130

1,020

23,815

794

8.10

9.04

47,240

Calendar year 1955: Max 7,240 Mln 84 Mean 629 Cfsm 6.42 In. 87.11 Ac-ft 455,300

Water 'ater year year 1955-56: 1955-56: Max Max 7,240 7,240 Mln Min 72 72 Mean Mean 730 730 Cfsm Cfsm 7.45 7.45 In. In. 101.37 101.37 Ac-ft Ac-ft 529,900 529,900

Peak discharge (base, 2,400 cfs).--Oct. 25 (11 a.m.) 10,800 cfs (12.68 ft); Nov. 3 (12 p.m.) 3,840 

;fs (8.38 ft;; Nov. 10 (1 a.m. ) 3,020 cfs (7.61 ft); June 1 (1:30 a.m.) 2,790 cfs (7.38 ft); June 19 

2 p.m.) 2,530 cfs (7.09 ft); July 12 (lO p.m.) 2,830 cfs (7.42 ft); July 20 (11 p.m.) 2,660 cfs 

7.23 ft); Sept. 26 (1:30 p.m.) 2,710 cfs (7.29 ft).

Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of records for stations on nearby streams, 

b Stage-discharge relation affected by ice.
SKAGIT RIVER BASIN 145

Stetattle Creek near Newhalera, Wash.

Location. Lat 48°43'30", long 121°09'20", in NE£ sec. 6, T. 37 N., R. 13 E., on left bank 

three-quarters of a mile upstream from mouth, 5? miles northeast of Newhalem, and 

18j miles northeast of Marblemount.

Drainage are a.--21.4 sq mi.

Records available. December 1913 to November 1915 (fragmentary), September 1933 to September 1956.Published as "near Marblemount" 1913-15.

Gage.--Water-stage recorder. Altitude of gage is 925 ft (by barometer). Dec. 19, 1913, 

Eb Nov. 14, 1915, staff gage at site half a mile downstream at different datum. Sept. 7 

to Oct. 20, 1933, staff gage and Oct. 21, 1933, to Aug. 26, 1937, water-stage recorder, 

at site 150 ft upstream at datum 1.69 ft higher.

Average discharge.--33 years (1933-56), 176 cfs (127,400 acre-ft per year).

Extremes. Maximum discharge during year, 4,330 cfs Oct. 25 (gage height, 7.34 ft); minimum daily, 18 cfs Mar. 15, 16.

1913-15, 1933-56: Maximum discharge, 8,580 cfs Nov. 26, 1949 (gage height, 9.70ft), 

from rating curve extended above 1,600 cfs on basis of slope-area determination of peak 

flow; minimum, 9 cfs Nov. 9-11, 1936.

Remarks. Records good except those above 700 cfs, which are fair, and those for periods 

of ice effect or no gage-height record, which are poor. No regulation or diversion 

above station.

Revisions (water years). WSP 1316: 1935(M).

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

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

Oct. 25 to Sept. 30

1.6 

2.0 

2.5 

3.0 

4.1

100

205

370

970

0.4

.9

1.4

2.0

56

116

231

3.0 

4.0 

5.5

530

960

2,100

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

Day

1

2

3

4

5

6

7

8

9

10

1L

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.

54

64

77

200

124

94

104

156

309

232

149

219

215

411

310

232

241

211

*190

139

115

98

86

907

2,060

613

409

415

447

432 

301

9,614

310

14.5

16.71

19,070

Nov.

224

189

1,500

1,510

506

288

221

259

389

454

216

145

119

98

85

75

70

65

75

70

65

60

T6

72

94

102

77

76

*75

75

7,340

245

11.4

12.76

14,560

Dec.

75

73

73

70

65

65

65

60

55

55

265

431 214"

154

125

102

88

76

65

75

144

294

229

158

131

118

102

87

77

65 

60

3,716

120

5.61

6.46

7,370

Jan.

50

40

43

*45

52

60

56

51

47

44

42

42

52

48

50

59

65

75

58

62

56

66

79

75

59

52

47

43

b40

b37 

b3_4

1,634

52.7

2.46

2.84

3,240

Feb.

b32

*30

b30

30

29

28

28

27

2G

26

30

35

3T

28

25

25

29

26

25

24

23

22

22

22

22

21

21

24

*29

-----

770

26.6

1.24

1.34

1,530

Mar.

34

40

50

40

35

30

28

27

25

22

21

21

20

19

18

18

19

23

25

28

30

45

89

101

94

97

82

77

79

*88 

87

1,412

45.5

2.13

2.45

2,800

Apr.

79

73

70

82

82

72

67

65

74

109

152

192

254

346

364

268

219

231

298

424

534

537

442

347

326

338

298

*247

212

200

7,002

233

10.9

12.17

13,890

May

192

189

177

171

189

217

295

448

520

562

400

278

229

229

318

515

649

770

744

716

585

573

621

585

537

544

457

457

535

649

757

14,108

455

21.3

24.52

27,980

June

685

551

585

488

350

284

*329

392

744

712

506

353

332

394

433

356

335

434

577

442

370

356

321

292

268

354

548

454

358

315

12,918

431

20.1

22.45

25,620

July

361

388

358

344

498

526

406

460

523

530

526

577

554

454

397

373

376

*427

470

478

470

394

364

373

338

292

252

207

185

183 

179

12,263

396

18.5

21.31

24,320

Aug.

173

177

151

136

145

163

173

179

179

179

181

183

194

203

226

198

165

160

169

181

185

175

167

165

213

165

147

*125

152

118 

JJLO

5,237

169

7.90

9.10

10,390

Sept.

110

94

82

74

70

66

m

75

86

98

96

100

105

99

96

88

85

87

88

111

125

85

118

306

556

712

230

238

494

514

5,206

174

8.13

9.05

10,330

Calendar year 1955: Max 2,060 Min 26 Mean 196 Cfsm 9.16 In. 124.07 Ac-ft 141,600

Water year 1955-56: Max 2,060 Min 18 Mean 222 Cfsra 10.4 In. 141. 16 Ac-ft 161,100

Peak discharse (base, l.OOO cfs). --Oct. 25 (1:15 a.m.) 4,330 cfs (7.34 ft); Nov. 3 (11:30 p.m.)

2,300 cfs (5.70 ft); Sept. 25 (11:30 p.m.) 1,150 cfs (4.35 ft).

^ Liiscnarge measurement, maue on tnia uay 

b Stage-discharge relation affected by ice.

Note.--No gage-height record Nov. 15-22, Dec. 4-10, Dec. 19, 20, Dec. 30 to Jan. 3, Feb. 4-28, 

Mar. 1-22, Sept. 4-7; discharge estimated on basis of records for stations on nearby streams. 

Computed from daily staff-gage readings Jan 4-28, Feb. 2.
146 SKAGIT RIVER BASIN

Skagit River at Newhalem, Wash.

Location. Lat 48°40'20", long 121°14'45", in SE£ sec. 21, T. 37 N., R. 12 E., on right

 bank a quarter of a mile upstream from Newhalem Creek, half a mile downstream from city 

of Seattle powerplant at Newhalem, 11 miles upstream from Bacon Creek, and 13 miles 

northeast of Marblemount.

Drainage area.--1,160 sq mi, approximately, of which 400 sq mi is in Canada.

Records available. October 1908 to May 1914 and October 1920 to September 1956 in reports

 of Geological Survey. October 1908 to September 1953 (monthly discharge only), in 

State Water-Supply Bulletin 6. Published as "near Marblemount 1908-14, 1920-31.

Gage.--Water-stage recorder. Datum of gage is 401.5 ft above mean sea level (river-

"profile survey). Prior to May 24, 1914, staff gages at sites half a mile upstream at 

datum 91 ft higher. Nov. 15, 1920, to June 4, 1923, staff gage at site about 500 ft 

upstream at same datum.

Average discharge. 48 years (1908-56), 4,401 cfs (3,186,000 acre-ft per year), adjusted

 for storage in Diablo Reservoir since October 1929 and Ross Reservoir since March 1940. 

Extremes. Maximum discharge during year, 17,500 cfs Oct. 25 (gage height, 88.14 ft);

 minimum, 756 cfs Feb. 20 (gage height, 80.20 ft); minimum daily, 1 100 cfs Sept 3

1908-14, 1920-56: Maximum discharge, 63,500 cfs Nov. 29, 1909 (gage height, 22.0ft,

from floodmark, site and datum then in use); minimum, 54 cfs Nov. 1, 1943 (gage height,

78.15 ft); minimum daily, 136 cfs Aug. 24, 1930. 

Remarks. Records excellent. Water is diverted 3 miles above station and is returned to

 river at Seattle powerplant Just above station. Plow regulated for power at Gorge Dam 

since August 1924 and by Diablo and Ross Reservoirs (see p. 143, 157), having a combined 

capacity of 1,279,000 acre-ft.

C ooperation. Gage-height record collected in cooperation with city of Seattle.

Revisions (water years). WSP 512: 1909-14. WSP1012: 1929. WSP 1316: 1914(M).

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

80.6

81.5

83.0

85.0

87.5

1,040

1,820

3,610

7,410

15,000

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

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

3,250

2,730 

4,210 

4,420

4,680

4,310

4,400

1,800

1,880

4,430

4,650

4,850

4,390

4,990

4,220

3,300

4,670

4.660

4,740

4,650

4,680

3,810

3,370

5,750

IS. 400

9,750

10,800

10,700

9,930

9 , 690

9,700

172,810

5,575

342,800

-30,040

Nov.

10,100

8,260 

11,000 

11,300

12,100

12,500

13,000

12,700

13.700

12,200

13,000

12,100

4,670

6,310

5,680

5,540

5,340

5,760

4,520

4,350

4,830

4,880

5,190

4,020

4,150

4,170

5,590

4,970

*5,220

4,950

230,100

7,670

456,400

-65,880

Dec.

4,890

4,620 

4,210 

3,690

5,050

5,100

5,090

4,680

4,600

3,740

4,280

5,100

5,110

5,190

5,030

5,080

4,200

3,740

5,080

5,010

4,950

5,270

5,070

3,800

3,140

2,440

4,760

4,560

4,680

4,720

4,500

141,380

4,561

280,400

-121,500

Jan.

3,090

3,480 

4,780 

4,880

5,180

4,930

4,030

3,820

4,580

4,750

4,590

4,530

4,510

4,540

3,320

4,800

5,000

4,620

4,690

4,700

4,190

2,920

4,720

5,200

4,910

4,690

4,990

4,620

3,960

*5,060

5, 280

139,360

4,495

276,400

-181, 100

Feb.

5,370

5,570 

4,910 

3,800

3,890

4,640

4,630

4,650

4,760

4,510

4,080

5,700

4,480

4,840

5,480

5,530

5,500

4,320

4,040

5,240

5,540

4,160

4,740

5,510

5,010

4,450

4,500

5,110

5,260

158,020

4,759

273,800

-213,000

Mar.

5,390

5,260 

5,150 

4,110

5,120

5,060

5,010

4,600

5,040

4,530

5,920

4,900

5,400

4,970

5,050

4,900

1,540

1,180

4,300

5,230

5,360

4,530

5,510

4,310

3,330

4,750

4,780

4,650

5,100

*4|750

142,350

4,591

282,500

-202,700

Apr.

5,570

4,990 

5,200 

5,210

5,220

5,280

5,420

5,450

4,740

4,960

4,720

4,700

4,940

4,700

4,520

5,010

5,560

5,830

5,760

5,650

6,000

5,960

5,950

5,870

5,890

5,950

7,170

7,590

6,480

7,340

161,610

5,387

320,500

+39,820

May

6,620

5,490 

5,710 

5,460

4,920

4,510

5,690

5,750

6,040

6,150

6,450

6,550

6,600

6,640

6,080

7,000

7,560

8,000

8,020

8,260

8,250

8,720

9,490

9,520

7,050

8,700

8,140

9,150

9,040

8 , 090

10,800

224,150

7,250

444,600

1-436,200

June

11,500

12,200 

11,600 

11,900

10,900

11,900

10,900

*9,950

10,900

8,540

10,600

9,940

9,440

8,210

9,280

9,160

7,780

9,450

10,200

10,100

9,460

8,800

8,010

8,030

8,910

7,700

8,630

7,710

7,330

6,850

285,860

9,529

567,000

1-272,500

July

6,200

7,430 

7,270 

6,020

7,170

7,970

7,800

8,250

10,900

6,260

5,180

5,100

5,400

9,700

11,400

9,150

7,950

8,560

9,800

11,400

11.900

10,300

7,510

7,530

7,260

7,570

6,110

5,230

4,750

5 , 200

4,890

236,520

7,630

469,100

+123,900

Aug.

4,320

4,430 

4,200 

5,840

2,720

5.910

4,090

5,950

5,930

4,060

5,810

3,690

4,650

4,240

5,660

6,910

3,850

3,680

3,670

4,840

4,640

4,160

4,540

4,250

3,740

5,690

4,540

*4,370

4,210

3,730

3,830

129,950

4,192

257,800

-5,710

Sept.

1,860

1,590 

1.100 

3,940

4,190

2,970

3,370

3,150

2,940

4,230

4,100

4,070

4,140

4,370

3,600

2,550

4,290

4,170

4,090

4,360

4,400

3,480

2,930

4,520

4,860

6.570

5,930

5,220

4,650

5,580

115,020

3,854

228,100

-45,770

Adjusted for change In reservoir contents

Mean 5,087

4.39

5.06

312,800

6,563

5.66

6.31

390,500

2,584

2.23

2.57

158,900

1,550

1.34

1.54

95,300

1,057

0.911

0.98

60,800

1,259

1.12

1.29

79,600

6,055

5.22

5.82

360,300

14,320

12.3

14.24

880,800

14,110

12.2

13.57

839,500

9,644

8.31

9.59

593,000

4,100

3.53

4.07

252,100

3,064

2.64

182,300

Calendar year 1955: 

Water year 1955-56:

Max 17,900 

Max 13,700

Mln 1,190 

Mln 1,100

Mean 5 

Mean 5

,000 Ac-ft 

,784 Ac-ft

5,620,000 

4,199,000

Adjusted

Calendar year 1955: 

Water year 1955-56:

t

Discharge 

Change In

measi 

contf

Mean 

Mean

4,972 

5,794

irement made 

ints In Ross

Cfe

CfE

im 4. 

im 4.

,29 

,99

on this day. 

and Diablo Reserve

In. 

In.

)lrs,

58 

67

In

.18 Ac-ft 

.99 Ac-ft

acre-ft.

3,600,000 

4,206,000
SKAGIT RIVER BASIN 147

Skagit River above Alma Creek, near Marblemount, Wash.

Location. Lat 48°36'25", long 121°21'35", in NE£ sec. 15, T. 36 N., R. 11 E., on right 

bank three-quarters of a mile upstream from Alma Creek and 7 miles north of Marblemount.

Drainage area. 1.260 sq mi, approximately, of which 400 sq mi is in Canada. 

Records available . October 1950 to September 1956.

Gage. Water-stage recorder. Datum of gage is 358.8 ft above mean sea level (from riverprofile survey).

Average discharge. 6 years, 5,792 cfs (4,193,000 acre-ft per year).

Extremes.--Maximum discharge during year, 29,400 cfs Oct. 25 (gage height, 14.64 ft); minimum, 1,230 cfs Mar. 17, Sept. 3 (gage height, 4.80 ft); minimum daily, 1,360 cfs 

Mar. 18.

1950-56: Maximum discharge, that of Oct. 25, 1955; minimum, that of Mar. 17, 

Sept. 3, 1956; minimum daily, that of Mar. 18, 1956.

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

All diversions returned to river above gage. Plow partly regulated by powerplants on 

upper Skagit River, and by Ross Reservoir (see p. 143) and Diablo Reservoir (see 

p. 157).

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

in cubic feet per second)

4.9 

5.4 

6.0 

7.0

1,340

1,950

2,830

4,690

8.0

9.0

11.0

13.0

6,940

9,530

15,500

22,800

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.

3,580

2,950

4,300

5,050

5,240

4,860

4,840

2,720

3,000

5,290

5,460

5,670

5,270

6,050

5,530

4,070

5,500

*5,230

5,350

5,150

5,030

4,170

3,730

8,030

22,800

13,200

12,900

13,000

12,400

12,300

11,100

213,770

6,896

424,000

Nov.

11,600

10,100

17,800

20,000

16,100

14,900

15,200

14,700

16,000

15,700

15,200

14,100

7,670

6,590

6,210

6,360

6,010

6,130

5,340

4,950

4,920

5,460

5,360

4,740

4,650

4,700

4,350

5,420

*5,650

5,560

------

281,450

9,382

558,200

Dec.

5,600

5,270

4,600

4,270

5,380

5,530

5,460

5,080

4,900

4,200

5,410

7,260

6,150

6,070

5,730

5,680

4,860

4,240

5,520

5,540

5,760

6,480

6,110

4,630

4,020

3,020

5,420

5,190

5,190

5,290

5,000

162,860

5,254

323,000

Jan.

3,610

3,840

*5,050

5,290

5,590

5,330

4,540

4,260

4,870

5,100

4,920

4,900

4,990

4,970

3,780

5,210

5,470

5,210

5,200

5,150

4,720

3,440

5,200

5,760

5,340

5,120

5,430

5,020

4,370

5,380

5,660

152,720

4,926

302,900

Feb.

5,760

5,940

5,160

4,250

4,110

4,750

4,920

4,860

4,980

4,790

4,410

3,920

4,630

5,050

5,610

5,680

5,660

4,580

4,070

5,330

5,690

4,350

4,880

5,480

5,230

*4,630

4,640

5,280

5,490

-

------

144,130

4,970

285,900

Mar.

5,700

5,530

5,490

4,310

5,400

5,300

5,290

4,870

5,290

4,490

4,100

5,060

5,610

5,130

5,210

5,090

1,820

1,560

4,220

5,450

5,570

5,050

5,840

4,890

3,910

5,150

5,290

5,050

5,540

5,540

*5,270

151,820

4,897

301,100

Apr.

4,140

5,250

5,610

5,640

5,650

5,740

5,840

3,860

5,010

5,490

5,440

5,630

5,950

5,970

5,900

6,100

6,510

6,740

6,880

7,240

8,100

8,120

7,760

7,420

7,500

7,420

8,360

*S;790

7,490

8,210

191,560

6,385

380,000

May

7,560

6,490

6,450

6,170

5,700

5,020

6,750

7,180

7,780

8,110

7,880

7,710

7,530

7,600

7,150

8,670

10,000

11,400

11,300

11,500

10,600

11,100

12,300

11,900

9,100

10,800

10,200

10,900

11,300

10,900

14.000

281,050

9,066

557,500

June

14,600

14,800

14,500

14,700

12,700

13,600

*12,600

11,900

14,600

12,000

13,300

11 , 900

11,100

9,860

11 , 300

11,100

9,200

11,300

13,000

12,500

11,400

10,500

9,550

9,180

10,200

9,120

10,700

9,550

8,860

8,120

------

347,740

11,590

689,700

July

7,560

9,000

8,820

7,370

9,050

10,100

9,530

10,000

13,300

8,820

7,120

7,190

7,310

11,100

13,500

11,100

*9,600

9,990

12,000

13,300

14.500

12,200

9,250

8,590

8,450

8,490

6,930

6,040

5,420

5,810

5,450

286,890

9,255

569,000

Aug.

,980

,050

,760

,260

.200

,380

,580

,500

,450

,640

,360

,240

,280

,880

,250

,950

,430

,210

,220

,460

,180

,710

,830

,730

,350

,290

,950

* ,770

,690

,140

,210

146,930

4,740

291,400

Sept.

2,250

1,940

1.500

3,870

4,650

3,060

3,700

3,500

3,130

4,480

4,490

4,480

4,380

4,620

4,460

a3,000

a4,600

a4,700

a4 , 600

a4,700

a5,000

a4,100

a3,3OO

a4,100

a5,000

a7.200

a6,800

a6,100

a5,400

34,000

------

127,110

4,237

252,100

Calendar year 1955: Max 22,800 Mln 1,530 Mean 5,887 Ac-ft 4,262,000

Water year 1955-56: Max 22,800 Mln 1,360 Mean 6,798 Ac-ft 4,935,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for station at Marblemount.
148 SKAGIT RIVER BASIN

Cascade River at Marblemount, Wash.

Location. Lat 48°31'25", long 121°23'00", in Nj sec. 16, T. 35 N., R. 11 E., on right 

bank 1| miles downstream from Boulder Creek, 2 miles east of Marblemount, and 2| miles 

upstream from mouth.

Drainage area. 171 sq mi.

Records available. September 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 380.3 ft above mean sea level {riverprofile survey). Prior to Oct. 10, 1928, staff gage at same site at datum 0.76 ft 

higher.

Average discharge.--28 years, 1,005 cfs (727,600 acre-ft per year).

Extremes. Maximum discharge during year, 10,800 cfs Oct. 25 (gage height, 9.31 ft); minimum, 208 cfs Mar. 16-18 (gage height, 1.55 ft).

1928-56: Maximum discharge, 17,800 cfs Wov. 27, 1949 (gage height, 11.47 ft), from 

rating curve extended above 5,000 cfs by logarithmic plotting; minimum, 118 cfs Nov. 30, 

1952; minimum gage height, 1.11 ft Feb. 8, 1937.

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

poor. No regulation or diversion above station.

Revisions (water years). WSP 832: 1936. WSP 1286: Drainage area.

Rating table, water year 1955-56 (gage height, In feet, and discharge. 

In cubic feet per second)

1.5 

2.5 

3.5 

4.5 

6.0

195

495

980

1,730

3,530

7,880

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ibtal

Mean

Cfsm

In.

Ac-ft

Oct.

381

372

363

564

567

464

474

664

1,100

968

710

730

755

930

1,070

815

815

 760

700

611

543

492

453

1,640

7,800

2,970

1,830

1,670

2,160

2,320

1,580

37,271

1,202

7.03

8.11

73,930

Nov.

1,250

1,130

5,580

5,940

3,020

2,060

1,630

1,620

2,660

4,270

2,060

1,440

1,300

1,100

1,000

920

870

820

870

760

700

640

600

800

1,000

890

820

*780

800

800

48,130

1,604

9.38

10.47

95,460

Dec.

780

710

650

600

570

580

600

560

53O

520

1,200

2,5OO

1,800

1,300

1,100

920

800

740

700

800

1,100

1,800

1,400

1,150

1,000

860

780

680

620

540

28,470

918

5.37

6.19

56,470

Jan.

500

490

*467

539

539

547

519

484

456

432

425

428

499

481

478

503

503

527

519

481

464

488

531

488

446

414

394

381

360

336

524

14,443

466

2.73

3.14

28,650

Feb.

315

*306

303

294

288

282

276

273

265

262

270

294

279

268

252

230

248

250

242

238

230

225

220

 218 218

218

*218

222

238

7,442

257

1.50

1.62

14,760

Mar.

258

285

309

279

270

265

252

255

250

242

230

225

220

218

210

208

208

210

238

258

273

339

432

467

478

519

467

432

428

464

*467

9,656

311

1.82

2.10

19,150

Apr.

439

422

404

422

411

387

378

378

404

531

790

968

1,170

1,440

1,480

1,220

1,040

1,020

1,260

1,770

2,380

2.490

2,100

1,780

1,620

1,610

1,500

1,310

*1,180

1,080

33,384

1,113

6.51

7.26

66,220

May

1,030

956

896

872

890

992

1,270

1,810

2,130

2,380

1,880

1,460

1,220

1,150

1,340

1,980

2,970

4,020

4,510

4,080

3,200

3,100

3,420

3,020

2,470

2,710

2,340

2,140

2,700

3,620

4,260

70,616

2,278

13.3

15.36

140,100

June

5,840

2,960

3,250

*3,080

2,220

1,860

1,820

1,790

2,780

3,28O

2,760

2,030

1,860

2,010

2,510

2,220

1,990

2,300

3,530

2,730

2,160

2,070

1,990

1,730

1,570

1,740

2,460

2,500

2,090

1,750

70,880

2,363

13.8

15.42

140,600

July

1,850

2,010

2,040

1,850

2,220

2,250

1,910

2,300

2,750

2,760

2,730

5,020

2,930

2,460

2,040

1,940

*1,930

2,120

2,440

2,560

2,450

2,110

1,880

1,880

1,780

1,590

1,450

1,260

1,130

1,070

1, 020

63,730

2,056

12.0

13.86

126,400

Aug.

968

914

805

745

775

825

860

890

914

914

938

974

1,040

1,100

1,280

1,150

932

896

938

986

1,020

992

950

884

992

980

872

*755

820

710

656

28,475

919

5.37

6.19

56,480

Sept.

700

651

579

531

492

481

507

519

535

603

660

567

547

547

535

499

495

519

539

595

730

547

484

862

1,380

2,260

1,340

1,030

1,380

1,710

22,824

761

4.45

4.96

45,270

Calendar year 1955: Max 7,800 Mln 222 Mean 1,126 Cfsm 6.58 In. 89.37 Ac-ft 814,900

Water year 1955-56: Max 7, BOO Mln 208 Mean 1,189 Cfsm 6.95 In. 94.68 Ac-ft 863,500

Discharge measurement made on this day. 

Note.--No gage-height record Nov. 13-27, Nov. 29 to Jan. 2; discharge estimated on basis of recorded range In stage and records for stations on nearby streams.
SKAGIT RIVER BASIN 149

Sank River above Whitechuck River, near Darrington, Wash.

Location. Lat 48°10'00", long 121°27'45", in NW£ sec. 24, T. 31 N., R. 10 E., on right 

bank half a mile upstream from Whitechuck River and 9i miles southeast of Darrington.

Drainage area. 152 sq mi.

Records available. August to November 1910 (fragmentary gage heights only), October 1917 

to September 1922, August 1928 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 930 ft (from river-profile map). Prior 

to Nov. 18, 1910, staff gage three-eighths of a mile downstream at different datum.

Average discharge. 33 years (1917-22, 1928-56), 1,126 cfs (815,200 acre-ft per year).

Extremes. Maximum discharge during year, 14,400 cfs Nov. 4 (gage height, 9.86 ft); minimum, 220 cfs Mar. 11, 15-17 (gage height, 2.30 ft).

1917-22, 1928-56: Maximum discharge, 30,200 cfs Nov. 27, 1949 (gage height, 14.90 

ft, in gage well), from rating curve extended above 15,000 cfs; minimum, 115 cfs 

Nov. 15, 16, 30, Dec. 1, 1936.

Remarks. Records good. No regulation or diversion above station.

Revisions (water years).--WSP 752: 1932. WSP 1286: 1918(M), 1920(M), 1921, 1922(M), 

1932(M), 1934(M), 1946-47(M), 1949.

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

in cubic feet per second)

Oct. 1 to Nov. 3 Nov. 4 to Sept. 30

2.5 240

 2.7 315

3.0 480

4.0 1,260

5.0 2,500

6.0 4,290

7.0 6,560

9.0 11,900

2.3 

2.6 

3.0 

3.5

4.0

220

349

570

940

1,410

5.0 2,680

6.0 4,340

7.0 6,560

9.0 11,900

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

Cf sm

In.

Ac-ft

Oct.

268

261

264

*657

891

678

573

1,240

2,420

1,730

1,180

1,210

1,180

1,190

1,220

995

939

899

805

715

636

566

512

1,770

10,200

4,990

2,840

*2,920

*3,540

3,110

2,040

52,439

1,692

11.1

12.83

104,000

Nov.

1,670

1,490

*8,440

*11,70Q

5,000

3,120

2,390

2,210

2,620

4,520

2,720

1,950

1,600

1,360

1,200

1,'060

932

958

1,030

860

780

705

670

876

1,620

1,320

1,120

1,340

1,210

1,180

67,651

2,255

14.8

16.55

134,200

Dec.

1,250

994

836

742

677

684

691

628

602

585

3,040

4,590

2,090

1,500

1,230

1,070

932

820

780

1,280

1,880

3,340

2,330

1,600

1,330

1,170

1,030

876

780

720 

663

40,538

1,308

8.61

9.92

80,410

Jan.

622

583

635

924

949

908

788

677

609

*558

540

546

656

616

628

844

852

780

735

642

596

684

828

691

583

516

464

448

421

384 

554

20,061

647

4.26

4.91

39,790

Feb.

350

349

335

321

316

307

298

289

280

276

316

379

330

302

259

268

298

263

255

247

243

236

236

232

236

228

228

289

330

8,296

286

1.88

2.03

16,450

Mar.

448

522

522

415

349

302

316

311

289

263

240

243

232

224

*22Q

220

228

298

311

335

399

616

1,080

1,120

958

949

765

656

677

735

720

14,963

483

3.18

3.66

29,680

Apr.

628

564

522

583

558

499

482

482

504

622

868

*1,090

1,370

1,700

1,810

1,550

1,310

1,250

1,520

2,080

2,840

3,120

2,710

2,290

2,060

2,050

2,000

1,770

1,630

1,490

41,952

1,398

9.20

10.26

83,210

May

1,390

1,350

1,270

1,250

1,270

1,290

1,640

2,200

2,640

2,940

2,530

2,060

1,740

1,600

1,730

2,340

3,290

4,500

5,240

5,300

4,280

*3,970

4,280

4,010

3,430

3,460

3,130

2,780

3,120

4,100

4,970

89,120

2,875

18.9

21.81

176,800

June

4,800

3 830

4,010

3,900

3,130

2,670

2,710

2,600

3,740

3,920

3,520

2,740

2,480

2,580

2,860

2,680

2,570

2,820

3,690

3,190

2,610

2,480

2,460

2,180

1,960

2,000

2,670

2,920

2,570

2,140

88,430

2,948

19.4

21.64

175,400

July

2,170

2,480

2,570

2,320

2,610

2,830

2,410

2,710

3,260

3,550

3,160

3,340

3,340

2,860

2,320

2,260

2,290

2,470

2,710

2,830

2,640

2,260

2,030

2,040

1,870

1,630

1,430

1,240

1,120

1,130

1,020

72,700

2,345

15.4

17.79

144,200

Aug.

940

860

804

720

720

780

804

812

828

836

812

820

852

868

940

*844

712

670

712

735

742

728

712

677

691

691

609

534

516

487 

459

22,915

739

4.86

5.61

45,450

Sept.

448

421

389

354

326

307

307

316

316

359

686

528

448

404

379

354

340

540

349

394

576

464

379

725

*1,390

2.250

1,480

1,060

1,400

1,690

19,159

639

4.20

4.69

38,000

Calendar year 1955: Max 11,700 Min 228 Meaa 1,312 Cfsm 8.63 in. 117.21 Ac-ft 950,100

Water year 1955-56: Max 11,700 Min 220 Mean 1,471 Cfsm 9.68 In. 131. 70 Ac-ft 1,068,000

Peak discharge (base, 4,000 cfs).--Oct. 25 (11:30 a.m.) 13.900 cfs (9.67 ft); Oct. 29 (4 p.m.) 

4,760 cfs (6.22 ft); Nov. 4 (10:30 a.m.) 14,400 cfs (9.86 ft): Nov. 10 (2:30 a.m.) 6,440 cfs (6.S 

ft); Dec. 11 (10:50 p.m.) 8,020 cfs (7.58 ft); May 20 (5 a.m.) 5,620 cfs (£.60 ft); June 1 (1 to 

2 a.m.) 5,500 cfs (6.46 ft); June 10 (7 to 11 p.m.) 4,020 cfs (5.83 ft).

* Discharge measurement made on this day.
150 SKAGIT RIVER BASIN

Sauk River near Sauk, Wash.

Location. Lat 48°25'15", long 121°34'00", In NW£ sec. 19, T. 34 H., R. 10 E., on left 

bank 5 miles upstream from mouth, 5 miles southeast of Sauk, and 8 miles downstream 

from Sulattle River.

Drainage area.--714 sq mi.

Records available. August to October 1910 (fragmentary), March 1911 to August 1912, July 

1928 to September 1956. Published as "near Sulattle Crossing, near Sauk" 1910-12.

Sage. Water-stage recorder. Datum of gage Is 266 ft above mean sea level (river-profile 

survey). Prior to Aug. 4, 1912, staff gages at several sites from 1 mile downstream 

to 5 miles upstream from present site at various datums.

Average discharge. 28 years (1928-56), 4,256 cfs (3,081,000 acre-ft per year).

Extremes. Maximum discharge during year, 40,600 cfs Oct. 25 (gage height, 12.23 ft); minimum, 1,210 cfs Oct. 3; minimum gage height, 3.09 ft Mar. 15, 16.

1910-12, 1928-56: Maximum discharge, 82,400 cfs Nov. 27, 1949 (gage height, 16.93 

ft); minimum, 572 cfs Dec. 5, 1929, but may have been less during period of ice effect 

Jan. 10-27, 1930.

Remarks. Records excellent except those for periods of doubtful or no gage-height record, 

which are fair. No regulation. Probably some small diversions for domestic use.

Revisions (water years). WSP 1286: 1929, 1937, 1939.

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

in cubic feet per second) 

(Shifting-control mebhod used Oct. 1-24)

2.9

3.4 

4.0 

5.0

1,140

1,760

3, 700

4,820

6.0

8.0

10.0

12.0

7,600

15,100

26,000

39,000

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

Day

1

2

3

4

5

6

7

8

9

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.

1,300

1,260

1.220

2,240

3,440

2,420

2,190

3,650

7,420

6,030

4,150

3,960

*3,780

3,830

4,170

3,420

3,200

3,110

2,870

2,630

2,390

2,180

2,020

4,650

28,800

15,100

9,460

8,880

11,600

13 , 000

a8,600

172,970

5,580

7.82

9.01

343,100

Nov.

a6,500

a6,000

26,300

55,600

15,000

9,800

7,820

7,540

8,550

16,100

9,560

a6,900

a5,600

a4,800

a4,200

a5,400

35.000

a5,500

a4,500

*3,800

3,440

3,240

3,070

5,740

6,080

5,510

4,770

5,810

5,510

5,120

-----

252,560

7,752

10.9

12.11

461,500

Dec .

5,560

4,550

5,940

5,500

5,240

5,220

5,500

5,090

5,030

2,910

7,440

14,200

7,420

5,590

4,720

4,220

5,720

5,300

5,240

4,580

6 , 560

11,500

8,960

6,340

5,410

5,000

4,450

5,920

5,500

5,240

5,050

156,700

5,055

7.08

8.16

510,800

Jan.

2,910

2,780

2,910

4,120

4,520

4,550

5,890

5,500

5,010

*2,780

2,720

2,720

5,090

2,980

5,070

4,400

4,450

5,920

3,740

5,440

3,200

5,650

4,470

5,690

5,140

2,840

2,560

2,420

2,510

2,150

1,980

101,470

5,273

4.58

5.29

201,500

Feb.

1,940

,920

,890

,820

,790

,750

,700

,650

,610

,590

,690

,020

,820

* ,690

,580

,500

,590

,540

,490

,450

,440

,410

,590

,590

,410

.580

,590

,580

,790

_ _ _

-----

4 ,190

,627

2.28

2.46

95,600

Mar.

2,100

2,500

2,560

2,250

1,940

1,760

1,770

1,760

1,650

1,570

1,480

1,470

1,420

1,580

1,560

1,570

1,580

1,490

1,700

1,770

2,040

5,000

4.550

4,500

5,960

4,010

5,240

2,910

2,960

5,180

5,160

72,170

2,528

5.26

3.76

145,100

Apr.

2,850

2,670

2,450

*2,550

2,530

2,520

2,270

2,240

2,510

2,700

5,570

4,280

5,120

6,110

6,510

5,640

4,820

4,570

5,560

6,940

9,220

10,200

8,720

7,590

6,740

6,680

6,450

5,750

5,500

4,870

-----

149,110

4,970

6.96

7.77

295,800

May

4,620

4,400

4,170

4.120

4,190

4,520

5,200

*6,740

8,070

9,120

7,910

6,560

5,410

5,040

5,560

7,210

10,200

14,100

16,400

16,800

15,600

12,600

13,500

12,900

10,700

11,000

9,880

8,680

9,660

12,500

15,700

280,660

9,054

12.7

14.62

556,700

June

16,100

12,700

12,700

13,100

10,400

9,050

8,880

8,010

10,600

12,000

12,000

9,220

8,200

8,490

9,590

8,880

8,170

8,680

12,100

11,500

9,080

8,550

*8,590

7,480

6,770

6,650

8,550

9,840

8,680

7,500

------

291,260

9,709

15.6

15.17

577,700

July

7,270

8,130

8,880

7,820

8,780

9,650

8,010

8,910

10,800

11,200

10,400

11 , 300

11.600

10,000

8,260

7,880

7,820

8,330

9,320

9,660

9,250

8,150

7,120

7,000

6,590

5,860

5,550

4,720

4,190

5,980

5,850

250,120

8,068

11.5

15.05

496,100

Aug.

5,670

5,420

5,240

2,960

2,910

5,070

5,150

*5,160

5,240

5,240

5,260

5,260

5,400

5,480

5.890

5,760

3,180

2,920

5,010

5,140

5,220

5,240

5,110

2,980

5,010

5,150

2,890

2,600

2,550

2,470

2.270

96,790

5,122

4.57

5.04

192,000

Sept.

2,260

2,190

1,990

1,800

1,720

1,650

1,650

1,750

1,750

1,890

2,570

2,590

2,000

1,890

1,850

1,760

1,750

1,750

1,790

1,860

2,510

2,190

1,770

2,450

5,890

6.620

5,540

*5,890

4,000

5,970

------

76,850

2,562

5.59

4.00

152,400

Calendar year 1955: Max 33,600 Mln 1,220 Mean 5,077 cfsm 7.11 In. 96. 52 Ac-ft 3,676,000

Water year 1955-56: Max 33,600 M ln 1,220 Mean 5,267 cfsm 7.38 In. 100. 42 Ac-ft 3,824,000

Peak discharge (base, 13,000 cfs). Oct 25 (3:30 p.m.) 40,600 cfs (12.23 ft); Oct. 29 (11 p.m.)

16.400 cfs (8.30 ft); Nov. 4 (10:30 a.m.) 40.300 cfs (12.19 ft); Nov. 10 (3 a.m.) 22,200 cfs (9.37

ft); Dec. 12 (1:30 a.m.) 20,700 cfs (9.11 fb): Dec. 22 (7 p.m.) 13,600 cfs (7.65 ft): May 20

(8 a.m.) 17,600 cfs (8.54 ft); June 1 (5 a.m.) 17,400 cfs (8.48 ft); June 11 (1 a.m.) 13,800 cfs

(7.70 ft); June 19 (6 p.m.) 13,300 cfs (7.59 ft); July 13 (2 a.m.) 13,000 cfs (7.51 fb).

Discharge measurement made on this 

a Doubtful or no gage-height record; discharge 

for nearby stations.

stimated on basis of weather records and records
SKAGIT RIVER BASIN 151

Baker River below Anderson Creek, near Concrete, Wash.

Location. Lat 48°39'50" ) long 121°40'25", in SE£ sec. 30, T. 37 N., R. 9 E., on right 

bank 100 ft downstream from Anderson Creek and 9| miles northeast of Concrete.

Drainage area. 211 sq mi.

Records available. September 1910 to October 1925, August 1928 to November 1931, January 

1955 to September 1956.

Gage. Water-stage recorder. Datum of gage is 521 ft above mean sea level (river-profile 

survey). Prior to Oct. 22, 1910, staff gage at site an eighth of a mile upstream at 

different datum. Oct. 22, 1910, to Sept. 23, 1915, staff gages and Sept. 24, 1915, to 

Oct. 3, 1925, Aug. 30, 1928,to Nov. 11, 1931, water-stage recorder at site 250 ft downstream at different datum.

Average discharge. 19 years (1910-25, 1928-31, 1955-56), 2,014 cfs (1,458,000 acre-ft 

per year).

Extremes. Maximum discharge during year, 20,100 cfs Nov. 3 (gage height, 14.37 ft), from 

rating curve extended above 7,700 cfs; minimum, 432 cfs Mar. 15 (gage height, 3.26 ft).

1910-25, 1928-31, 1955-56: Maximum discharge, 36,800 cfs Dec. 29, 1917 (gage 

height, 13.7 ft, site and datum then in use), from rating curve extended above 8,100 

cfs; minimum recorded, 219 cfs Dec. 15, 16, 1919.

Flood in about 1815 reached a stage about 2 ft higher than that of Dec. 29, 1917. 

Flood in 1897 reached a stage about equal to that of Dec. 29, 1917. Flood in November 

1909 reached a stage 1.6 ft higher than that of Dec. 29, 1917 (discharge, 46,200 cfs).

Remarks. Records good. No regulation or diversion above station. 

Revisions (water years). WSP 1346: 1912-13(M) , 1924, drainage area.

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

In cubic feet per second) 

Oct. 1 to Dec. 11, 

June 9 to Sept. 30 Dec. 12 to June

4.0 

5.0 

7.0

800

1,400

3,290

9.0

11.0

13.0

6,200

10,300

15,600

3.2

3.8 

4.4 

5.0

412

643

945

1,300

6.0 

7.0 

8.0

9.0

2,100

3,150

4,450

6,200

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Ibtal

Mean

Cfstn

In.

Ac-ft

Oct.

878

894

938

1,690

1,900

1,480

1,470

2,190

3,810

3,190

2,290

2,480

2,440

*2,840

2,970

2,260

2,030

1,870

1,760

1,480

1,260

1,130

1,020

3,540

14,400

*7,350

4,290

3,890

4,260

3,860

2 , 820

88,680

2,861

13.6

15.63

175,900

Nov.

2,160

2,020

13,200

15,500

6,560

3,870

2,830

2,900

4,610

5,780

3,370

2,290

1,810

1,490

1,320

1,220

1,130

1,120

*1,100

1,030

960

900

866

998

1,480

1,300

1,330

1,640

1,920

1,840

88,544

2,951

14.0

15.61

175,600

Dec.

1,780

1,480

1,270

1,140

1,060

1,030

1,030

1,020

1,020

998

2,770

4,770

2,750

1,880

1,500

1,260

1,120

1,000

989

1,380

1,920

3,000

2,570

1,890

1,610

1,450

1,300

1,140

1,020

945

 

48,982

1,580

7.49

8.63

97,150

Jan.

857

830

868

1,130

1,140

1,320

1,180

1,030

918

835

912

945

* ,060

,000

,130

,710

,530

,500

,400

,340

,230

,400

,530

,320

,150

1,020

906

840

785

726

 

34,226

1,104

5.23

6.03

67,890

Feb.

652

648

643

617

600

592

596

575

559

563

596

674

609

588

536

512

516

512

509

493

486

482

478

478

482

468

471

547

559

______

16,041

553

2.62

2.83

31,820

Mar.

613

674

726

 56

596

*555

555

536

512

486

460

457

453

443

459

443

446

464

493

536

626

890

,230

,200

,140

,140

,020

,010

,260

^560

,230

22,649

731

3.46

3.99

44,920

Apr.

1,110

1,020

940

1,060

1,020

918

950

901

906

1,080

1,470

*1,830

2,200

2,680

2,880

2,430

1,990

1,910

2,300

3,150

4,240

4,520

3,750

3,160

2,860

2,780

2,540

2,160

1,900

1,750

62,405

2,080

9.86

11.00

123,800

May

1,670

1,610

1,500

1,480

1,810

2,050

2,430

3,200

*3,630

3,940

3,320

2,470

1,950

1,810

2 ,100

3,040

4,260

5,570

5,950

5,680

4,570

4,290

4,690

4,280

3,680

3,880

3,520

3,380

3,820

5,060

5,860

106,500

3,435

16.3

18.77

211,200

June

5,410

4,400

4,620

5,130

3,680

3,040

3,450

5,780

10,100

8,460

6,430

4,430

3,650

3,850

4,260

3,820

3,400

3,550

5,290

5,110

3,930

*3,530

3,240

3,000

2,720

3,070

4,200

4,360

3,670

3,170

132,750

4,425

21.0

23.40

263,300

July

3,2OO

3,490

3,810

3,290

4,8OO

5,800

4,370

4,290

4,840

4,850

4,720

5,210

5,160

4,430

3,750

3,630

3,630

3,930

4,400

4,680

4,540

4,220

3,850

3,730

3,580

3,200

2,850

2,450

2,190

2,100 

2,000

120,990

3,903

18.5

21.33

240,000

Aug.

1,820

1,810

1,620

1,420

1,550

1,760

1,870

*1,940

1,970

1,960

2,000

2,140

2,240

2,370

2,520

2,340

1,970

1,900

2,000

2,130

2,180

2,100

2,030

1,970

2,080

2,060

1,800

1,410

1,560

1,340

1,220

59,080

1,906

9.03

10.41

117,200

Sept.

1,260

1,070

927

850

805

81O

850

872

883

1,000

1,060

949

949

982

982

927

910

938

938

1,100

1,410

976

932

2,640

3,960

5,560

3,860

*2,810

3,620

5,030

49,860

1,662

7.88

8.79

98,900

Calendar year 1955: Max 15,5OO Min 450 Mean 2,109 Cfstn 10.0 In. 135.67 Ac-ft 1,527,000

Water year 1955-56; Max 15,500 Mln 439 Mean 2,270 Cfsm 10.8 In. 146.42 Ac-ft 1,648,000

Peak discharge (base, 7,200 cfs).--Oct. 25 (1 p.m.) 18,400 cfs (13.86 ft); Nov. 3 (7:30 p.m.) 

20,100 cfs (14.37 ft); Nov. 9 (7 p.m.) 8,200 cfs (10.04 ft); June 8 (11:30 p.m.) 11,300 cfs (11.41 

ft).

* Discharge measurement made on this day.

4^7240 O -58 -11
152 SKAGIT RIVER BASIN

Baker River at Concrete, Wash.

Location. Lat 48°32'35", long 121°44'35", on line between sees. 10 and 11, T. .35 N., R.

 8 E., on left bank 800 ft downstream from Baker River powerplant, a quarter ol a mile

northeast of Concrete, and three-quarters of a mile upstream from mouth. 

Drainage area.--297 sq mi. Records available.--September 1910 to March 1915, September 1943 to September 1956. _ Gage --Water-stage recorder. Datum of gage is 172.6 ft above mean sea level (from river- 

"profile survey). Prior to Mar. 5, 1915, staff gage at site half a mile downstream at

Averag^dlscharge"! !? years (1910-14, 1943-56), 2,600 cfs (1,882,000 acre-ft per year),

Extremes.--Maximun^dl scharge during year, 26,900 cfs Nov. 4 (gage height, 15.07 ft); min-

 ImuST 68 cfs Mar. 20-22, 26-28, Apr. 3 (gage height, 1.04 ft); minimum daily, 446 cfs

eP 1910-i5, 1943-56: Maximum discharge, 35,200 cfs Nov. 27, 1949 (gage height, 20.32 

ft from high-water mark), from rating curve extended above 16,000 cfs on basis of 

computation of peak flow over dam and through the powerplant by the Puget Sound Power 

and Light Co.; minimum, 21 cfs Feb. 7, 1949 (gage height, 0.20 ft); minimum daily,

Remarks.--Records'good.' No diversions which are not returned to river above gage. Flow

regulated by Baker River powerplant and Lake Shannon (see p. 157). 

Revisions (water years ).-WSP 1286: 1911-13 (M), 1944(M), 1945-46, drainage area.

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

discharge, In cubic feet per second)

Oct. 1 to Nov. 3 Nov. 4 to Sept. 30

3.3 

4.0 

5.0 

6.0 

8.0 

10.0

690

1,140

2,050

3,360

7,130

12,500

13.0 21,300

2.5

3.0

4.0

5.0

6.0

8.0

10.0

13.0

425

665

1,360

2,380

3,700

7,600

12,600

21,300

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

Day

1

2

3

4

5

6

7 

8

9

1O

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

ft)

Oct.

1,940

1,740

1,920 

1,900

1,920

1,920

1,910 

1,750

1,670

1,890

984

730

1,060

1,190

1,290

1,760

2,040

2,150

2,200

2,280

2,330

2,060

1,950

2,020 

16,600

*8,800

5,340

5,130

6,100

5,450 

3,410

93,434

3,014

185,300

+37,110

Nov.

2,770

3.04O

20,400 

20,200

8,080

4,960

3,600 

4,060

6,910

6,860

4,330

3,120

2,620

2,620

2,610

2,580

2,470

2,260

2,020

1,900

1,870

2,080

1,830

1,250 

1,660

1,780

1,690

2,070

1,940

1,760

125,340

4,178

248,600

-3,550

Dec .

1,790

1,780

1.750 

1,960

2,160

2,010

1,980 

1,990

1,960

1,940

2,580

6.040

3,680

2,570

2,560

2,480

2,360

2,540

2,520

2,490

2,150

2,650

2,740

2,860 

2,560

2,260

2,140

1,990

1,850

1,930 

2, 080

74,330

2,398

147,400

-520

Jan.

1,980

1,730

1,990 

1,880

1,820

1,740

1,740 

2,220

2,160

*1,890

1,950

*1,950

2,080

1,950

1,710

1,740

1,770

1,760

1,770

1,780

1,690

1,580

2,140

2,400 

2,080

1,950

1,970

2,030

2,040

2,120

2,540

60,150

1,940

119,300

-7,220

Feb.

2,540

2,470

2,350 

1,980

2,060

2,210

2,250 

2,500

2,480

2,430

2,370

1,970

1,890

2,110

*2,430

2,430

2,420

2,160

2,200

1,920

2,020

1,920

1,960

2,020 

2,130

2,080

1,820

1,850

1.790

62,760

2,164

124,500

-77,090

Mar.

1,780

1,690

1,730 

1,650

1,670

1,900

1.910 

1,600

1,700

1,830

1,700

1,650

1,500

1,480

1,470

1,440

1,570

1,600

1,430

1,420

1,410

1,430

1,450

1,650 

1,540

1,450

1,470

1,520

1,500

1,600

1,560

49,300

1,590

97,790

-21,960

Apr.

1,440

1,520

1,500 

1,500

1,660

1,590

1,580 

1,430

1,510

1,500

1,500

1,520

1,530

1,400

1,440

1,560

1,730

2.210

1,630

1,540

1,320

1,050

1,560

1,680 

1,700

1,700

1,700

1,580

736

1,740

46,056

1,535

91,350

+84,020

May

1,75O

1,740

1,710 

1,700

1,660

1,120

1,690 

1,620

*2,980

4,090

6,220

3,730

3,010

2,600

2,600

3,190

6,180

8,060

8,010

7,960

5,890

6,520

6,070

5,760 

4,610

5,540

4,740

4,550

5,350

6,480

8.150

135,260

4,363

268,300

+24,800

June

7,340

5,970

5,980 

7,120

5,760

5,460

4,320 

7,310

15.600

10,600

7,640

5,580

4,320

4,880

4,980

4,670

4,720

4,580

7,200

7,080

4,300

*4,420

4,160

3,700 

3,630

3,910

5,590

5,540

4,470

4,280

171,110

5,704

339,400

+1,210

July

3,960

4,790

4,810 

4,340

6,200

7,520

5,460 

5,580

6,160

6,320

6,250

6,010

6,080

5,800

5,140

3,750

4,150

4,600

5,610

5,860

5,420

5,380

4,170

4,540 

3,840

3,680

3,360

2,890

2,620

2,540

2,450

149,060

4,808

295,700

-870

Aug.

2,230

2,150

2,160 

2,060

1,910

2,110

2,050 

*2,100

2,200

2,190

2,090

1,990

2,120

2,630

2,690

2.700

2,150

2,120

2,330

2,290

2,490

2,360

2,130

2,170 

2,370

2,220

2,350

2,150

2,080

2,120

J.,440

68,150

2,198

135,200

-2,100

Sept.

2,120

1,870

1,810 

1,960

2,270

2,140

2,070 

1,990

2,030

2,020

2,100

2,130

2,120

2,050

1,710

446

1,720

1,770

1,780

1,680

1,770

1,690

624

1,740 

1,830

2,660

2,740

*2,830

3,190

6.050

62,910

2,097

124,800

+2,470

Adjusted for change in contents in Lake Shannon

Mean

Cfsm

In.

Ac-ft

3,617

12.2

14.04

222,400

4,117

13.9

15.47

245,000

2,389

8.04

9.27

146,900

1,823

6.14

7.08

112,100

824

2.77

2.99

47,410

1,233

4.15

4.79

75,830

2,948

9.93

11.07

175,400

4,767

16.1

18.50

293,100

5,724

19.3

21.50

340,600

4,794

16.1

18.61

294,800

2,165

7.29

8.40

133,100

2,139

7.20

8.04

127,300

Observed

Calendar year 1955 : 

Water year 1955-56 :

Max 

Max

20,40O 

20,400

Min 

Min

73 

446

Mean 

Mean

2, 

3,

731 

000

Ac-ft 

Ac-ft

1, 

2,

977 

178

,000 

,000

Adjusted

Calendar year 1955 : 

Water year 1955-56 :

Mean 

Mean

2,751 

3,050

Cfsm 

Cfsm

9.26 

10.3

In. 

In.

125 

139

.75

.76

Ac-ft 

Ac-ft

1, 

2,

992 

214

,000 

,000

* Discharge measurement made on this day.

t Change In contents In Lake Shannon, in acre-feet, furnished by Puget Sound Power & Light Co.
SKAGIT RIVER BASIN 153

Skagit River near Concrete, Wash.

Location.--Lat 48°31'30", long 121°46'10", in NE£ sec. 16, T. 35 N., R. 8 E., on right 

bank at dalles I? miles southwest of Concrete and 2-j miles downstream from Baker 

River.

Drainage area.--2.700 sq mi, approximately, of which 400 sq mi is in Canada. 

Records available. September 1924 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 130.0 ft above mean sea level, datum of 

1929. Prior to Dec. 10, 1924, staff gage 200 ft upstream and Dec. 10, 1924, to 

Sept. 30, 1937, water-stage recorder at present site; both gages at datum 12.7 ft 

higher.

Average discharge.--32 years, 14,650 cfs (10,610,000 acre-ft per year).

Extremes.--Maximum discharge during year, 106,000 cfs Nov. 3 (gage height, 34.48 ft); 

minimum, 3,250 cfs Mar. 19 (gage height, 13.95 ft); minimum daily, 4,950 cfs Mar. 18.

1924-56: Maximum discharge, 154,000 cfs Nov. 27, 1949 (gage height, 40.8 ft); minimum, probably less than 2,160 cfs during period Oct. 1-24, 1925, when recorder was 

not operating and gates in Baker River Dam were first closed; minimum daily recorded, 

2,610 cfs Nov. 14, 1936.

Maximum stage known, 69.3 ft, present datum, at site 200 ft upstream, from floodmarks (discharge, about 500,000 cfs}; occurred about 1815. Records of other floods, 

at site 200 ft upstream, prior to establishment of station, are given in WSP 612.

Remarks.--Records excellent. Flow regulated by powerplants on Baker and upper Skagit 

Rivers, and by Ross Reservoir (see p. 143) and by Diablo Reservoir and Lake Shannon 

(see p. 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 

15 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Total 

Mean 

Ac-ft

Oct.

8.OOO 

7.220 

7,680 

10,400 

12,800

11,000 

10,200 

10,800 

16,800 

16,300

13,300 

12,900 

*12,800 

13,700 

14,700

12,200 

12,700 

13,000 

12,700 

12,100

11,500 

10,300 

9,380 

14,100 

57,500

*47,600 

33,800 

32,800 

36,200 

38,800 

27,800

561,080 

18,100 

*1,115

Nov.

24,800 

23,100 

76,800 

94.100 

52,600

38,600 

33,700 

32,000 

35,000 

49,200

34,600 

28,300 

22,500 

17,200 

16,800

16,400 

15,300 

15,100 

*14,900 

13,400

12,800 

13,000 

12,500 

12.400 

15,200

15,600 

14,100 

16,400 

16,700 

15,800

798,900 

26,630 

$1,585

Dec.

16,700 

15,000 

13,100 

12,700 

12,600

13,000 

13,200 

12,500 

12,100 

11.500

16,100 

55.600 

22,100 

18,200 

16,500

15,500 

14,100 

12,800 

13 , 400 

15,000

18,500 

25,300 

23,700 

18,400 

16,200

14,000 

14,700 

14,000 

13,200 

12,900 

12,500

495,100 

15,970 

982,000

Jan.

11,100 

9,980 

11,300 

13,700 

14.900

14,600 

*13,400 

12,100 

12,100 

11,700

11,300 

11,400 

12,200 

11,900 

10,900

13,400 

14,700 

13,800 

13,500 

13,000

12,200 

11,700 

13,700 

14,400 

12,800

11,800 

11,700 

11,000 

10,400 

10,500 

11,200

382,380 

12,330 

758,400

Feb.

11.500 

11,300 

10,400 

9,100 

8,720

9,280 

9,600 

9,620 

9,660 

9,550

9,500 

8,760 

8,870 

*9,510 

10,100

10,100 

10,200 

8,890 

8,520 

8,980

9,480 

8,560 

8,090 

9,160 

9,560

8,280 

8,150 

9,140 

9,720

271,500 

9,355 

558,100

Mar.

10,300 

10,900 

11,400 

9,860 

9,580

9,860 

9,780 

9,380 

9,080 

8,710

7,860 

8,390 

9,070 

8,400 

8,240

8,300 

6,310 

4.950 

6,020 

9,290

9,460 

10,600 

13,000 

14,200 

11,900

12,800 

12,300 

11,500 

11,900 

12,500 

12,500

508,340 

9,946 

611,600

Apr.

11,100 

10,400 

11,200 

11,500 

*11,600

11,200 

9,500 

8.880 

9,580 

11,300

12,800 

14,200 

15,700 

17,600 

18,500

17,100 

16,500 

16,400 

17,100 

20,000

24,200 

25.800 

24,000 

21,800 

20,400

20,500 

20,500 

19,800 

17,400 

17,700

485,460 

16,120 

958,900

May

17,400 

15,700 

15,200 

14,700 

14,500

15.600 

16,800 

*19,700 

23,600 

26,600

26,600 

21,800 

19,500 

18,300 

18,100

22,800 

50,700 

40,000 

44,000 

45^200

57,100 

36,600 

38,500 

36,900 

30,300

35,100 

51,000 

28,700 

51,600 

56,300 

43,600

848,500 

27,570 

*1,685

June

44.800 

59,200 

58,600 

42,100 

54,400

50,400 

50,700 

51,000 

44,400 

42,800

40,800 

31,900 

28,300 

28,800 

30,600

30,200 

27,400 

28,800 

58,000 

57,600

30,100 

*28,400 

27,500 

25,200 

24,800

25.900 

29,900 

31,400 

27,900 

24,200

974,100 

32,470 

tl,932

July

25,500 

26,100 

28,100 

24,800 

28,200

53,000 

28,400 

28,900 

54.800 

35,700

50,100 

50,900 

51,500 

31,800 

31,200

28,100 

25,900 

27,200 

30,900 

32,200

34,200 

51,000 

25,900 

24,100 

25,800

22,500 

19,600 

18,200 

15,800 

15,400 

14.200

833,600 

26,890 

*1,653

Aug.

15,900 

15,500 

12,900 

11,200 

10,600

11,000 

12,000 

11,900 

12,100 

12,200

11,900 

11,600 

15,000 

15,400 

14,900

17.700 

12,500 

11,500 

11,600 

13,100

13,200 

12,600 

12,300 

11,900 

12,200

11,900 

12,200 

11,500 

11,100 

10,400 

9.150

380,330 

12,270 

754,400

Sept.

8,760 

7,530 

6,550 

7,550 

9,480

8,060 

8,060 

8,220 

7,880 

8,960

10,400 

10,300 

9,770 

9,440 

9,060

5.820 

8,480 

8,780 

9,000 

8,990

11,000 

9,460 

6,700 

11,000 

14,500

24.100 

19,800 

15,900 

*17,300 

24,000

524,450 

10,810 

645,500

Calendar year 1955: Max 94,100 Mln 5,600 Mean 16,900 Ac-ft 12,240,000 

Water year 1955-56: Max 94,100 Mln 4,950 Mean 18,200 Ac-ft 13,210,000

* Discharge measurement made on this day. 

Expressed in thousands.
154 SKAGIT RIVER BASIN

Alder Creek near Hamilton, Wash.

Location. Lat 48°31 I 40", long 121°57'00", In NE^ sec. 18, T. 35 N., R. 7 E., on left 

bank at railroad trestle a quarter of a mile upstream from highway bridge, threequarters of a mile upstream from mouth, and 2 miles east of Hamilton.

Drainage area. 10.7 sq mi.

Records available. August 1943 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 125 ft (by barometer). Prior to 

Nov. 15, 1945, at site 80 ft upstream at datum 2.46 ft higher. Nov. 15, 1945, to 

Jan. 7, 1947, at present site at datum 2.56 ft higher. Jan. 8, 1947, to Aug. 24, 1951, 

at same site at datum 0.98 ft higher.

Average discharge. 13 years, 35.4 cfs (25,630 acre-ft per year).

Extremes. Maximum discharge recorded, during year, 363 cfs Nov. 3 (gage height, 4.11 ft); 

minimum, 4.3 cfs Sept. 16; minimum gage height, 2.15 ft Aug. 18, Sept. 16.

1943-56: Maximum discharge, 670 cfs Jan. 7, 1945 (gage height, 4.28 ft, site and 

datum then in use); minimum, that of Sept. 16, 1956; minimum gage height, 1.87 ft 

Oct. 19, 1952.

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

No regulation or diversion above station.

Revisions (water years).--WSP 1286: 1945(M), 1947, drainage area.

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

in cubic feet per second) 

(Shifting-control method used Dec. 28 to Jan. 15, Aug. 1 to Sept. 30)

2.26 

2.5 

3.0 

4.0

4.5

13

330

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

Day

1

2

3

4

5

6

7

8

g

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.

9.4

9.8

13

11

10.5

10.5

12

17

21

19.5

18

17.5

16

16

15.5

15.5

*15.5

16

16

16

16

16

33

*79

76

74

88

170

lio

1,407.1

45.4

4.24

4.89

2,790

Nov.

225

220

*325

205

130

97

72

76

99

122

92

66

55

48

40

39

35

35

35

*35

33

31

3T

43

76

83

79

86

113 

104

2,730

91.0

8.50

9.49

5,410

Dec.

125

97

76

63

54

52

59

55

55

57

152

198

132

97

79

66

57

48

48

55

63

102

92

74

72

64

63

52

44 

39

37

2,327

75.1

7.02

8.09

4,620

Jan.

37

35

40

64

70

106

*83

68

*61

52

49

46

54

46

50

115

120

115

108

97

86

86

86

72

64

59

52

48

44 

40

2,091

67.5

6.31

7.27

4,150

Feb.

37

34

34

33

32

31

31

28

"25 26

43

57

44

40

33

*31

30

31

33

34

34

35

35

35

35

35

36

38

42

1,015

35.0

3.27

3.53

2,010

Mar.

47

57

66

52

40

34

35

33

32

30

28

27

26

25

24

23

26

28

32

33

40

55

83

81

76

74

66

63

76 

63

74

1,469

47.4

4.43

5.11

2,910

Apr.

63

55

49

*63

54

48

48

43

42

43

48

52

57

61

61

55

49

49

50

54

57

57

55

52

49

44

44

43

39

3J)

1,522

50.7

4.74

5.29

3,020

May

40

38

35

33

33

32

32

31

*31

35

32

31

28

28

27

25

25

24

24

23

22

22

21

20

20

19.5

19.5

19.5

19.5 

18

Tolo

826.0

26.6

2.49

2.87

1,640

June

19

19

19.5

20

19.5

19.5

19

19.5

19.5

24

3i

23

22

22

21

20

19.5

19.5

23

22

21

*20

19

19

18

19

18

17.5

17.5

17.

607.5

20.2

1.89

2.11

1,200

July

17

17

17

16

17.5

17

17

15.5

15.5

15.5

15.5

15.5

15

15

14.5

14.5

14.5

13.5

13.5

13.5

13.5

13

12.5

12.5

12.5

12.5

11.5

10.5

8.1 

7.8

9.0

433.4

14.0

1.31

1.51

860

Aug.

9.8

12.5

12.5

12.5

13

11.5

11

11.5

*11

11

11

10.5

9.8

9.4

11

10.5

9

9

9.4

10.5

9.8

11

11

11

16

12

11.5

11

12

11

11

343.7

11.1

1.04

1.19

682

Sept.

9.8

9

6.9

6.3

9

8.5

7.2

5.8

5.8

6

9.8

7.2

6.3

5.5

4.5

4.8

7.2

8.1

7.2

8.5

12

9.4

9.8

13.5

12

16

13

17.5

*22 

24

292.6

9.75

0.911

1.02

580

Calendar year 1955: Max 325 Min 9.4 Mean 48.4 Cfsm 4.52 In. 61.43 Ac-ft 35,060

Water year 1955-56: Max 325 Min 4.5 Mean 41.2 Cfsm 3.85 In. 52.37 Ac-ft 29,870

Peak discharge (base, 140 cfs). About Oct. 30 (time and discharge unknown); Nov. 3 (10 a.m.) 363 

cfs (4.11 ft); Nov. 9 (9:30 p.m.) 172 cfs (3.40 ft); Nov. 30 (11 p.m.) 145 cfs (3.29 ft); Dec. 11 

(10:30 p.m.) 255 cfs (3.74 ft); Jan. 16 (2:30 a.m.) 165 cfs (3.43 ft).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 26 to Nov. 3, Feb. 18, Feb. 20 to Mar. 5; discharge estlmsted on 

basis of recorded range in stage and records for stations on nearby streams.
SKAGIT RIVER BASIN 155

Day Creek near Lyman, Wash.

Location.--Lat 48°30'05", long 122°02'45", in NW£ sec. 28, T. 35 N., R. 6 E., on left 

bank at highway bridge 1 mile upstream from mouth and l£ miles southeast of Lyman.

Drainage area.--36.3 sq mi.

Records available.--July 1943 to September 1956.

gage.--Water-stage recorder. Altitude of gage is 90 ft (from topographic map).

Average discharge.--13 years, 269 cfs (194,700 acre-ft per year).

Extremes.--Maximum discharge during year, 4,750 cfs Nov. 3 (gage height, 8.27 ft), from 

rating curve extended above 3,000 cfs; minimum, 13.5 cfs Sept. 8, 9; minimum gage 

height, 0.41 ft Oct. 2.

1943-56: Maximum discharge, 5,570 cfs Dec. 28, 1949 (gage height, 8.35 ft), from 

rating curve extended above 3,000 cfs on basis of logarithmic plotting; minimum, 

5.9 cfs Feb. 1, 1945.

Remarks. Records good except those for periods of indefinite stage-discharge relation or 

no gage-height record, which are poor. No regulation or diversion above station.

Revisions (water years).--WSP 1316: Drainage area, 1944(M).

Rating tables, water year 1955-56, except periods of Indefinite stage-discharge 

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

(Shifting-control method used Jan. 6-15)

Oct. 1 to Nov. 2 Nov. 3 to Sept. 30

1.0

1.5

28

76

171

330

2.0 

3.0 

4.0 

5.0

530

1,040

1,660

2,430

0.8 

1.0 

1.3 

1.6 

2.0

10

21

48

93

190

3.0 

4.0 

5.0

7.0

580

1,070

1,710

3,400

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

Day

1

2

3

4

5

6

7

8

9

10

LI

12

L3

L4

15

L6

L7

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ibtal

Mean

Cfsm

In.

Ac-ft

Oct.

41

36

39

798

467

192

324

829

1,140

*815

362

405

256

183

149

118

103

88

84

74

65

62

55

699

2,140

1,070

854

875

1,730

951

512

15,516

501

13.8

15.90

30,780

Nov.

348

1,220

5,100

*1,340

*643

470

440

900

1,700

1,100

700

450

330

230

180

170

160

150

160

150

140

130

*120

350

920

430

470

700

1,000

720

18,921

631

17.4

19.38

37,530

Dec. 

530

450

370

300

260

250

270

290

300

280

1,300

1,000

600

480

400

310

260

200

240

400

1,000

1,500

750

600

450

460

390

320

270

240

230

14,500

468

12.9

14.86

28,760

Jan.

250

240

360

500

640

*770

470

350

290

248

4L4

406

618

394

587

1,290

548

535

486

499

450

634

522

358

258

196

162

141

134

113

101

12,964

418

11.5

13.28

25,710

Feb.

99

95

91

86

93

88

86

81

76

79

169

234

*144

113

93

93

88

78

74

74

81

78

75

76

86

79

84

220

241

5,052

105

2.89

5.13

6,050

Mar.

276

306

366

241

168

131

131

120

107

95

86

79

76

70

72

76

84

107

154

182

366

643

914

558

450

382

276

290

553

553

426

8,338

269

7.41

8.54

16,540

Apr.

306

*252

205

398

502

220

294

262

262

346

418

426

458

494

450

362

514

534

426

535

 548 602

450

402

414

406

334

280

285

266

11,049

368

10.1

11.32

21,920

May

266

286

258

272

550

410

*450

454

446

450

314

248

230

262

342

438

414

380

360

510

270

280

290

260

240

240

230

220

250

300

542

10,022

323

8.90

10.27

19,880

June

210

220

230

262

252

316

466

467

884

689

586

420

300

280

269

238

217

220

402

354

248

217

*184

165

154

179

184

149

131

111

9,011

500

8.26

9.23

17,870

July

120

127

113

103

507

252

162

152

136

113

99

91

83

73

62

58

57

54

52

48

45

41

37

37

36

32

31

29

27

27

27

2,631

84.9

2.34

2.70

5,220

Aug.

27

29

31

27

25

24

24

23

*21

21

20

20

18.5

18

20

21

20

18

17

15.5

15.5

15

15

15

55

35

25

21

Zt

27

20

707.5

22.8

0.628

0.72

1,400

Sept.

18

15.5

15

15

15

14.5

14.5

14.5

14

15.5

39

37

25

21

19

17

16

15.5

15

61

72

48

33

268

556

438

220

438

*454

504

3,428.0

114

5.14

5.51

6,800

Calendar year 1955 : Max 3, LOO Mln 18.5 Mean 328 Cfsm 9.04 In. 122.78 Ac-ft 237,700

Water year 1955-56 : Max 3,100 Mln 14 Mean 301 Cfsm 8.29 In. 112.84 Ac-ft 218,500

Peak discharge (base. 5,000 cfa).--Oct. 25 (5:50 p.m.) 5,570 cfs (6.55 ft); Oct. 29 (12 m.) 3,530 

cfs (6.30 ft); Nov. 3 (7 a.m.) 4,750 cfs (8.27 ft).

* Discharge measurement made on this day.

Note.--Ho gage-height record Nov. 6-21, Nov. 24, 26, 27, Dec. 5, 4, 10, 11, 16-18, Dec. 20 to 

Jan. 5, May 18-30, June 1-3, 12-14; Indefinite stage-discharge relation Nov. 5, 22, 25, 25, Nov. 28 

to Dec. 2, Dec. 5-9, Dec. 12-15, 19; discharge estimated on basis of records for stations on nearby 

streams.
156 SKAGIT RIVER BASIN

Skagit River near Mount Vernon, Wash.

Location. Lab 48°26 I 40", long 122°20'00", in SE^ sec. 7, T. 34 N., R. 4 E., on drawrest 

of, and 150 ft downstream from, bridge on U. S. Highway 99 and 1 mile north of Mount 

Vernon.

Drainage area. 3,060 sq mi, approximately.

Records available. October 1940 to September 1956. Monthly discharge only for October 

1940, published in WSP 1316.

Gage. Water-stage recorder. Datum of gage is at mean sea level, datum of 1929. 

Average discharge. 16 years, 16,160 cfs (11,700,000 acre-ft per year).

Extremes. Maximum discharge during year, 107,000 cfs Nov. 4 (elevation, 33.52 ft); minimum, 5,620 cfs Mar. 19 (elevation, 10.38 ft).

1940-56: Maximum discharge, 144,000 cfs Feb. 11, 1951 (elevation, 36.85 ft); minimum, 2,740 cfs Oct. 26, 1942 (elevation, 7.37 ft).

Maximum stage known, 37 ft in 1906, from Great Northern Railway high-water profile.

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

fair. Flow regulated by powerplants on Baker and upper Skagit Rivers, and by Ross 

Reservoir (see p. 143) and by Diablo Reservoir and Lake Shannon (see following page). 

Small diversions for domestic and municipal use.

Rating tables, water year 1955-56 (elevation, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Oct. 5-8)

Oct. 1-9 Oct. 1O to Sept. 30

11.6 7,390 10.9 6,480 Z3.O 41,300 

13.0 10,200 13.0 10,800 27.0 61,400 

16.1 17,400 16.0 18,500 33. O 103,000 

19.0 27,000

Discharge, In cubic feet per second, water year1 October 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 

22 

Z3 

24 

25

26 

Z7 

28 

Z9 

30 

31

Total 

Mean 

Ac-ft

Oct.

8,670 

7,880 

7.450 

9,780 

13,600

12,100 

10,700 

1Z,300 

17,200 

*19,400

16,900 

14,400 

14,200 

14,100 

15,200

13 , 900 

12,400 

13,600 

13 , 100 

12,800

12,200 

11,400 

10,100 

10,500 

45,600

77.400 

45,700 

38,300 

38,200 

48,800 

35,300

633,180 

20,430 

*1,256

Nov.

28,800 

25,700 

52,400 

98.700 

86,300

50,800 

38,200 

33,800 

33,900 

52,700

44,900 

33,600 

27,600 

19,600 

a!7,500

a!6,500 

16,400 

15,800 

16,200 

14,800

13,800 

13,800 

15.400

17^000

18,800 

16,500 

18,200 

20,000 

19,100

888,600 

29,620 

tl,763

Dec.

20,200 

18,200 

16,100 

14,800 

13,800

14,500 

14,900 

14,300 

13,800 

13,300

16,600 

59.400 

29,500 

21,800 

18,700

17,400 

16,200 

14,800 

14,200 

16,900

21,200 

26,600 

30,500 

23,100 

19,700

17,800 

16,700 

16,700 

15,400 

14,600 

14,300

576,000 

18,580 

tl,142

Jan.

13,600 

11,800 

12,500 

16,100 

18,400

18,700 

17,500 

15,500 

*14,200 

13,600

13,600 

13,800 

14,700 

14,600 

13,900

17,000 

19.600 

17,500 

17,500 

16,900

15 , 500 

15,600 

16,200 

17,400 

15,700

14,200 

13,500 

13,100 

12,500 

11.500 

12,400

468,600 

15,120 

929,500

Feb.

12,400

11^900 

10,800 

10,100

10,000 

10,700 

10,700 

10,600 

10,600

10,700 

10,700 

9,970 

10,500 

all, 500

all, 500 

all, 500 

10,300 

9,930 

8,980

10,300 

10,100 

8,980 

*9,700 

10,400

9,600 

9,240 

9,790 

10,700

304,390 

10,500 

603,700

Mar.

11,500 

12,200 

13,300 

12,400 

10,900

11,200 

10,900 

10,900 

10,000 

10,200

9,240 

8,780 

9,650 

9,440 

8,950

9,200 

8,630 

6,690 

6.510 

9,650

10,400 

12,300 

15,000 

17.500 

14.700

14,100 

14,200 

13,200 

14,100 

14,900 

14,800

355,270 

11,460 

704,700

Apr.

13,500 

11,800 

12,600 

12,800 

13,100

*12,600 

11,800 

10,300 

10.100 

12,000

13,600 

15,200 

16,700 

18,700 

20,200

19,000 

17,800 

17,500 

17,800 

20,400

25,100 

28.500 

26,900 

24,300 

22,400

21,900 

21,600 

21,500 

19,800 

18,200

527,700 

17,590 

*1,047

May

18,800 

17,500 

16,500 

15.800 

16,200

15 , 900 

16,700 

20,200 

23,500 

27,400

29,700 

25,200 

*2 1,300 

19,300 

19,300

22,100 

29,600 

39,500 

46,400 

48,100

42,700 

38,300 

39,500 

40 , 500 

35,300

27,500 

27,100 

29,500 

31,500 

36,700 

43,300

880,900 

28,420 

*1,747

June

49,300 

43,800 

40,200 

44,600 

39,400

33,500 

32,500 

31,700 

43,800 

4_9,400

47,200 

37,800 

31,200 

29,800 

31,200

32,200 

29,300 

28,400 

34,500 

42,600

*34,000 

29,700 

28,500 

26,600 

24,800

24.500 

26,800 

31,900 

29,500 

-25,600

B.,033.9 

34,460 

*2,051

July

23,800 

24,600 

27,600 

26,300 

25,200

53,200 

30,200 

28,200 

32 , 600 

56,500

51,000 

30 , 000 

32,200 

51,100 

51,400

29,600 

26,000 

26,100 

28,500 

51,900

55 , 900 

51,900 

27,800 

25,900 

24,300

22,400 

20,400 

18,500 

16,400 

15,100 

ISjOOO

835,400 

26,950 

*1,657

Aug.

14,200 

15,500 

13,100 

12,100 

11,200

10,600 

11,800 

11,900 

12,100 

*12,100

12 , 100 

11,800 

12,200 

13,100 

15 , 900

16.200 

14,000 

11,800 

11,500 

12 , 100

12 , 900 

12,400 

12,000 

11,800 

12,000

12,000 

11,800 

11,500 

10,900 

10,900 

9,810

578,910 

12,220 

751,600

Sept.

9,600 

8,500 

7,590 

6,970 

9,400

9,050 

8,240 

8,440 

8,420 

8,240

9,900 

10,500 

9,900 

9,510 

9,380

8,180 

6.900 

8,890 

8,980 

9,020

10,200 

10,500 

8.480 

8,380 

13,500

20,500 

*22,600 

17,100 

17,100 

25,400

526,570 

10,890 

647,700

Calendar year 1965: Max 98,700 Mln 6,32O Mean 18,330 Ac-ft 13,Z70,000 

Water year 1955-56: Max 98,700 Mln 6,510 Mean 19,700 Ac-ft 14,300,000

Peak discharge (base. 55.000 cfs). Oct. 26 (10:30 a.m.) 84,900 cfs (30.69 ft); Nov. 4 (10:30 p.m.) 

107,000 cfs (35.52 ft); Nov. 10 (3 p.m.) 59,100 cfs (26.58 ft). 

* Discharge measurement made on this day. 

t Expressed In thousands, 

a No gage-height record; discharge estimated on basis of records for station near Concrete
SKAGIT RIVER BASIN 157

Reservoirs in Skagit River basin, Wash.

Ross Reservoir. See page 143.

Diablo Reservoir. Lat 48°43 I 00", long 121°08'00", in SE£ sec. 5, T. 37 N., R. 13 E. (unsurveyed), in Diablo Dam on Skagit River, 1 mile downstream from Thunder Creek and 

6 miles northeast of Newhalem. Drainage area, 1,100 sq mi, approximately. Records 

available, October 1929 to September 1956. October 1929 to September 1938, monthly 

change in reservoir contents published with records for Skagit River at Newhalem. Gage, 

water-stage recorder. Datum of gage is at mean sea level, subject to adjustment to 

datum of 1929. Maximum contents during year, 90,300 acre-ft Oct. 25 (elevation, 

1,206.17 ft); minimum, 83,310 acre-ft Mar. 16 (elevation, 1,198.33 ft). Maximum contents during period 1929-56, 90,600 acre-ft July 14, 1933 (elevation, 1,206.5 ft).

Reservoir is formed by concrete dam, completed in 1930; storage began in October 

1929. Usable capacity, 76,220 acre-ft between elevations 1,040 ft (bottom of outlet 

pipes) and 1,205 ft (top of taintor gates). Dead storage, 13,000 acre-ft. Crest of 

spillway is at elevation 1,187 ft. Water is used by city of Seattle for power development at Diablo and Newhalem powerplants. Gage-height record collected in cooperation 

with city of Seattle. Figures given herein represent total contents.

Lake Shannon. Lat 48°32 I 55", long 121°44 I 25", in SW£ sec. 2, T. 35 N., R. 8 E., at Baker 

Dam on Baker River near left bank, half a mile north of Concrete and 1 mile upstream 

from mouth of Baker River. Drainage area, 297 sq mi. Records available, November 1925 

to September 1956. Gage, water-stage recorder. Datum of gage is at mean sea level, 

subject to adjustment to datum of 1929. Maximum contents observed during year, 160,660 

acre-ft Nov. 4 (elevation, 436.95 ft); minimum observed, 40,060 acre-ft Mar. 21 (elevation, 371.78 ft). Maximum contents observed during period 1925-56, that of Nov. 4, 

1955.

Reservoir is formed by concrete dam, completed in June 1927. Capacity, 132,500 acreft between elevations 360 ft (lowest elevation for capacity operation) and 435 ft (spillway crest). Dead storage unknown. Water is used by Puget Sound Power & Light Co. for 

power development. Gage-height records furnished by Puget Sound Power & Light Co. 

Figures given herein represent contents above elevation 340 ft (center line of outlet 

tunnel).

Month-end elevation and contents, water year October 1955 to September 1956

Date

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

Calendar year 1955.

Peb . 29 ..............

May 31..............

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

Water year 1955-56.

Diablo Reservoir

Elevation 

(feet)t

1,201.9 

1,202.3 

1,203.0 

1,200.6

-

1,204.1 

1,203.0 

1,201.4 

1,200.6 

1,202.5 

1,202.2 

1,201.4 

1,201.5 

1,200.4

-

Contents 

(acrefeet)

86,430 

86,790 

87,410 

85,290

-

88,400 

87,410 

85,990 

85,290 

86,960 

86,700 

85,990 

86,080 

85,110

-

Change In 

contents 

(acre-feet)

+360 

+620 

-2,120

-350

+3,110 

-990 

-1,420 

-700 

+1,670 

-260 

-710 

+90 

-970

-1,320

Lake Shannon

Elevation 

(feet)t

419.57 

436.72 

435.15 

434.92

-

431.69 

392.06 

378.33 

424.75 

436 .05 

436.58 

436.20 

435.27 

436.36

-

Contents 

(acrefeet)

123,020 

160,130 

156,580 

156,060

-

148,840 

71,750 

49,790 

133,810 

158,610 

159,820 

158,950 

156,850 

159,320

-

Change In 

contents 

(acre-feet)

+37,110 

-3,550 

-520

+15,160

-7,220 

-77,090 

-21,960 

+84,020 

+24,800 

+1,210 

-870 

-2,100 

+2,470

+36,300

t Elevation at 12 p.m.

Note. Midnight elevations for Diablo Reservoir for May 31 and June 30 furnished by city of 

Seattle from their powerplant logs.
158 SAMISH RIVER BASIN

Samish River near Burlington, Wash.

Location.--Lat 48°32'45", long 122°20'15", in SE£ sec. 6, T. 35 N., R. 4 E., on left bank 

500 ft downstream from bridge on U. S. Highway 99, half a mile downstream from Friday 

Creek, and 5 miles north of Burlington.

Drainage area. 87.8 sq mi.

Records available. July 1943 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 45 ft (from topographic map). Prior to 

Dec. 1, 1948, at site 500 ft upstream at different datum. Dec. 1, 1948, to Jan. 7, 

1949, staff gage 200 ft upstream at datum 3.14 ft higher than present datum.

Average discharge. 13 years, 242 cfs (175,200 acre-ft per year).

Extremes.--Maximum discharge during year, 2,000 cfs Nov. 3 (gage height, 7.40 ft); minimum, 24 cfs Aug. 9 (gage height, 2.18 ft).

1943-56: Maximum discharge, 5,830 cfs Dec. 28, 1949 (gage height, 11.89 ft); minimum recorded, 11 cfs July 10, 1951 (gage height, 2.01 ft).

Remarks. Records good. State fish hatchery on Friday Creek diverts about 4 cfs, which 

is returned above station. There is evidence of slight regulation and there may be 

some pumping for irrigation.

Revisions (water years). WSP 1216: Drainage area. WSP 1286: 1944(M), 1945.

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

and discharge, in cubic feet per second) 

(Shifting-control method uaed Mar. 29 to Apr. 9)

2.2 

2.4 

2.7 

3.0 116

3.5 

4.0 

5.0 

7.0

222

360

740

1,760

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

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

Tbtal

Mean

Cf sm

In.

Ac-ft

Oct.

36

34

34 

55

81

55

62

131

157

139

105

92

79

72

69

62

*58

56

56

55

52

51

50

75

400

426

313

*406

587

556 

412

4,816

155

1.77

2.04

9,550

Nov.

336

352

1.750 

*1,370

742

512

402

392

504

734

504

a360

a300

a250

a220

a200

*194

205

224

222

227

255

287

399

656

648

572

572

676

825

14,870

496

5.65

6.30

29,490

Dec.

923

672

512 

423

376

366

386

416

489

473

1,090

1.560

876

612

500

437

379

327

316

444

644

852

752

584

489

473

536

419

360

324 

295

17,305

558

6.36

7.33

34,320

Jan.

298

324

357 

644

672

*808

708

532

440

379

357

351

451

392

389

616

680

592

572

596

500

512

540

473

416

370

324

301

273

242 

222

14,331

462

5.26

6.07

28,430

Feb.

217

208

194 

189

196

200

220

205

189

217

365

485

a360

3280

3240

*210

215

210

210

240

295

298

298

293

316

318

307

287

327

7,589

262

2.98

3.21

15,050

Mar.

516

536

744

616

489

402

395

437

392

342

298

279

273

263

244

232

224

227

255

295

348

426

548

552

444

485

448

487

792

640 

520

13,149

424

4.83

5.57

26,080

Apr.

426

376

345 

466

437

*360

373

351

327

333

354

339

333

330

318

276

247

240

250

268

298

273

237

210

198

187

180

155

143

141

8,771

292

3.33

3.72

17,400

May

145

147

133 

127

149

151

*151

155

151

176

145

120

109

105

1O9

124

141

141

141

135

109

111

109

98

92

93

87

81

84

90 

92

3,801

123

1.40

1.61

7,540

June

85

78

84

107

85

82

81

100

124

246

247

161

127

127

112

105

98

105

131

159

*135

116

105

loo

96

96

95

88

82

79

3,436

115

1.31

1.46

6,820

July

75

71

66 

71

85

~87 102

78

71

67

64

62

58

56

55

53

50

47

44

42

40

40

37

36

34

34

33

32

32

39 

38

1,699

54.8

0.624

0.72

3,370

Aug.

35

35

34

32

31

30

29

29

*29

29

29

28

28

27

30

31

30

30

28

29

28

27

27

27

44

38

33

31

30

32 

30

950

30.6

0.349

0.4O

1,880

Sept.

29

29

28 

28

27

27

27

28

29

30

37

36

32

31

30

29

27

26

26

29

37

34

31

58

52

94

*76

72

120

200

1,359

45.3

0.516

0.58

2,700

Calendar year 1955: Max 1,90O Mln 3O Mean 282 Cfsm 3.21 In. 43.58 Ac-ft 204,000

Water year 1955-56: Max 1,730 Mln 26 Mean 252 Cfsm 2.87 In. 39.01 Ac-ft 182,600

Peak discharge (base. 1.1OO cfs). Nov. 3 (12:3O p.m.) 2,OOO cfs (7.40 ft); Nov. 3O (10:3O p.m.) 

1,170 cfs (5.94 ft); Dec. 12 (1 a.m.) 1,910 cfs (7.25 ft).

* Discharge measurement made on this day.

3 No gsge-height record; discharge estimated on basis of weather records and records for stations 

on nearby streams.
WHATCOM CREEK BASIN 159

Whatcom Creek below hatchery, near Bellingham, Wash.

Location. Lat 48°45'1G", long 122°25'40", in NW^SEi sec . 28, T. 38 N. , R. .3 E. , on right

bank m Whatcom Falls Park, seven-eighths of a mile downstream from Lake Whatcom and

2 miles east of Bellingham. 

Drainage area.--55.5 sq mi.

Records available.--October 1945 to November 1956 (discontinued). 

Gage.--Hater-stage recorder. Datum of gage is 252.55 ft above mean sea level (city of

Bellingham datum).

Average discharge.--11 years, 84.8 cfs (61,390 acre-ft per year). 

Extremes .--1955-5'6: Maximum discharge during water year, 432 cfs Dec 12 (gage height

3.87 ft); minimum, 1.4 cfs Sept. 10 (gage height, 1.39 ft).

1956: Maximum discharge during period October to November, 260 cfs Oct 31 (gage

height, 3.25 ft); minimum, 0.8 cfs Oct. 11, 12; minimum gage height, 1.31 ft Oct 11 

1945-56: Maximum discharge, 1,350 cfs about Dec. 29, 1949 (gage height 6 0 ft

from recorded range in stage); minimum, 0.7 cfs Nov. 24, 1952; minimum gage height,

Remarks.--Records fair. Plow completely regulated by Lake Whatcom (usable capacity, 

about 28,800 acre-ft under normal operating conditions). City of Bellingham diverts 

about 30 cfs from lake for municipal supply.

Cooperation.--Gage-height record collected in cooperation with city of Bellingham

RevislonsT^-WSP 1286: Drainage area.

Rating table, Oct. 1 1955, to Nov. 6, 1956 (gage height, In feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Nov. 2-16, 1955, 

Sept. 7 to Oct. 14, 1956)

1.5

1.6

1.5

3.0

9.6

22

2.5 

3.0 

4.0

82

192

485

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

6.2

5.9

5.9

5.9

6.2

5.9

5.9

6.2

6.2

6.2

5.9

6.2

5.9

5.9

5.9

5.9

5.6

*5.6

5.3

5.3

5.3

5.3

5.6

7.3

8.6

7.7

8.2

7.7

8.2

6.9

6.6

195.4

6.30

388

Nov.

6.2

6.6

7.7

6.2

6.6

6.2

5.6

5.9

6.2

5.9

5.3

4.7

4.5

5.0

5.9

5.9

*5.9

5.9

5.6

5.9

5.6

5.6

5.9

7.3

6.9

6.6

6.9

92

339

399

992.5

33.1

1,970

Dec.

423

414

420

423

420

411

4O5

399

399

399

411

426

426

426

417

4O8

396

387

375

372

372

381

393

393

393

384

384

372

366

357

3^.1

12 , 303

397

24,400

Jan.

342

333

*324

324

333

345

351

351

345

339

333

322

322

313

308

308

310

260

182

184

184

184

189

157

14.5

14.5

56

14.5

14.5

14

14

7,085.0

229

14,050

Feb.

12.5

13

13

12.5

12

12

12

11.5

11.5

11.5

11.5

12

11.5

11.5

9.1

11.5

11.5

11.5

11.5

*16

24

28

4O

41

41

40

40

38

38

569.1

19.6

1,130

Mar.

38

37

127

222

194

291

324

354

348

339

330

231

22

22

24

22

21

19

20

20

20

20

232

363

366

366

363

360

360

357

360

6,172

199

12,240

Apr.

357

273

*136

18.5

18.5

87

159

159

159

159

159

159

159

159

159

125

16.5

16.5

15.5

15.5

15.5

15.5

15.5

15.5

14.5

14.5

15

15

14.5

14.5

2,66O.O

88.7

5,280

May

14.5 14~

14

13

13

13

13

13

12.5

12.5

*12

12

12

11.5

11.5

9.1

5.9

8.6

9.1

8.6

9.1

9.6

9.6

9.6

9.6

9.6

8.6

9.1

9.1

8.6

8.6

333.9

10.8

662

June

8.6

8.6

9.1

8.2

8.2

8.2

8.2

8.2

8.6

9.1

9.1

9.1

8.6

8.2

8.2

8.2

8.2

8.2

8.2

8.2

*8.2

8.2

8.6

8.6

8.2

8.2

7.7

8.2

8.2

10

253.3

8.44

502

July

8.2

8.2

8.6

876

8.2

8.2

7.7

7.7

7.3

7.3

6.9

6.9

7.3

7.3

6.9

6.9

6.6

6.6

6.6

6.2

6.2

6.6

6.2

5.9

6.6

6.2

6.9

7.3

6.9

6.6

6.2

219.8

7.09

436

Aug.

6.2

6.6

6.6

6.2

6.2

5.6

*5.6

5.3

5.0

5.3

5.0

4.7

5.3

7.1

6.9

5.3

5.6

5.6

6.5

5.6

5.0

5.3

5.6

5.6

6.2

5.9

6.6

6.6

6.6

6.6

6.6

182.8

5.90

363

Sept.

7.3

6.9

6.9

6.9

5.9

4.5

3.7

4.2

4.7

3.5

4.5

5.0

5.3

5.3

5.3

5.9

5.6

5.3

5.6

6.2

5.0

5.9

5.6

5.3

*5.6

5.3

4.7

5.3

5.6

5.6

162.2

5.41

322

Calendar year 1955: Max 6OO Mln 4.5 Mean 92.4 Ac-It 66,86O

Water year 1955-56: Max 426 Mln 3.3 Mean 85.1 Ac-ft 61,74O

Discharge measurement made on this day.

Discharge, in cubic feet per second, 1956

Day

1

2

3

4

5

6

7

8

Oct.

4.5

4.5

3.7

2.7

2.7

3.5

2.8

3.5

Nov.

252

249

249

246

246

*246

-

-

Day

9

10

11

12

13

14

15

16

Oct.

2.9

2.8

2.9

3.5

4.2

5.6

5.9

6.6

Nov.

_

-

-

-

-

-

-

-

Day

17

18

19

20

21

22

23

24

Oct.

7.3

6.6

8.6

12.5

11

11

11.5

9.1

Nov.

_

-

-

-

-

-.

-

-

Day

25

26

27

28

29

30

31

Total. ............................... .....

Mean. .............................................. ........ .....

Runoff in acre-feet ...............................................

Oct.

9.1

9.1

8.6

7.7

65

202

249

1,370

Nov.

.

.

-

.

_

_

_

-

Discharge measurement made on this day.
160 NOOKSACK RIVER BASIN

Nooksack River above Cascade Creek, near Glacier, Wash.

Location. Lat 48°54'20", long 121°50'30", in NVf£ sec. 1, T. 39 N., R. 7 E., on right 

bank a quarter of a mile upstream from Cascade Creek, half a mile downstream from 

Dead Horse Creek, 4-j miles east of Glacier, and 6 miles upstream from Glacier Creek.

Drainage area.--105 sq mi.

Records available.--October 1937 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,245 ft (from river-profile map). Supplementary water-stage recorder on left bank at same datum (principal gage prior to 

Oct. 1, 1953).

Average discharge.--19 years, 754 cfs (545,900 acre-ft per year).

Extremes. Maximum discharge during year, 6,960 cfs Nov. 3 (gage height, 9.27 ft), from 

rating curve extended above 2,900 cfs on basis of contracted-opening determination at 

gage height 8.75 ft; minimum, 96 cfs Feb. 27, Mar. 13-16, 19, 20 (gage height, 2.19 ft).

1937-56: Maximum discharge, 10,300 cfs Nov. 26, 1949 (gage height, 10.50 ft, supplementary gage), from rating curve extended above 2,900 cfs on basis of contractedopening determination at gage height 8.13 ft (supplementary gage); minimum, 73 cfs 

Feb. 16, 1949.

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

No diversion above station. Some regulation at low flow by powerplant at Excelsior.

Revisions (water years). WSP 1092: 1946.

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

in cubic feet per second) 

(Shifting-control method used Oct. 26 to Nov. 2)

Oct. 1 to Nov. 2 Nov. 3 to Sept. 3O

4.0

4.5 

5.0

336

545

845

6.0 

8.1

1,680

4,710

2.3 

2.6

3.5

119

200

350

600

4.0 930

5.0 1,730

7.0 3,800

9.0 6,550

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

Cfsm

In.

Ac -ft

Oct.

362

389

420

644

517

437

454

601

852

617

494

522

540

873

742

575

575

550

*536

467

433

408

392

1,340

4.650

1,820

*1,150

1,100

1,120

1,000

736

25,316

817

7.78

8.97

50,210

Nov.

580

626

5,260

4,040

1,960

1,330

1,010

1,080

1,840

2,100

1,170

846

714

624

582

540

500

*475

460

426

408

382

368

413

485

413

413

470

485

450

30,450

1,015

9.67

10.79

60,400

Dec.

422

395

368

342

333

329

321

316

304

300

665

799

515

445

404

368

333

304

333

564

648

818

606

500

515

515

436

386

354

329

312

13,579

438

4.17

4.81

26,930

Jan.

300

288

281

292

292

422

342

*300

288

269

329

342

364

329

350

530

455

455

418

372

342

346

368

329

288

269

255

240

230

220

210

10,115

326

3.10

3.58

20,060

Feb.

200

T95

190

190

194

185

185

176

173

170

179

179

170

165

160

155

150

150

145

145

145

*145

145

145

150

150

150

151

156

------

4,793

165

1.57

1.70

9,510

Mar.

154

165

185

165

156

148

148

146

143

136

129

131

131

129

129

131

131

131

141

146

170

269

386

377

329

321

273

258

329

359

329

6,275

202

1.92

2.22

12 , 450

Apr.

292

262

247

251

240

220

233

226

240

304

*404

490

558

690

762

648

594

576

684

944

1,400

1.540

1,340

1,120

1,010

979

902

797

720

660

19,333

644

6.13

6.85

38,350

May

636

618

588

588

672

755

909

1,240

1,470

1,590

1,290

*986

832

797

937

1,330

1,960

2,570

2,680

2,680

2,270

2,180

2,370

2,260

2,110

2,150

1,890

1,770

2,000

2,560

3,050

49,738

1,604

15.3

17.62

98,650

June

2,900

2,380

2,690

2,680

1,860

1,530

1,610

2,940

6,100

4,580

3,060

*2,020

1,680

1,840

1,940

1,730

1,630

1,820

2,470

*2,090

1,680

1,620

1,590

1,420

1.230

1,500

2,110

2,010

1,680

1,440

65,830

2,194

20.9

23.32

130,600

July

1,500

1,690

1,780

1,570

2,320

2,310

1,890

1,970

2,360

2,410

2,390

2.530

2,450

2,050

1,740

1,680

1,680

1,860

2,180

2,290

2,320

1,990

1,820

1,810

1,680

1,470

1,270

1,040

965

930 

895

56,840

1,834

17.5

20.13

112,700

Aug.

825

825

762

714

748

*790

811

839

853

818

846

937

986

1,050

1.160

965

818

832

909

958

944

895

902

902

930

832

748

660

755

642 

612

26,268

847

8.07

9.30

52,100

Sept.

630

540

505

470

445

436

465

465

470

525

535

490

495

505

505

480

475

490

490

546

510

475

515

831

1,190

*2.030

940

678

943

1,060

19,134

638

6.08

6.78

37,950

Calendar year 1955: Max 5,260 Mln 169 Mean 782 Cfsm 7.45 In. 101.10 Ac-ft 566,100

Water year 1955-56: Max 6,100 Min 129 Mean 895 Cfsm 8.52 In. 116.07 Ac-ft 649,900

Peak discharge (base. 3.600 cfs).--Oct. 25 (11 a.m.) 6,840 cfs (9.25 ft); Nov. 3 (11:30 a.m.) 

6,960 cfs (9.27 ft); Nov. 9 (8:30 p.m.) 4,110 cfs (7.26 ft); June 9 (3 a.m.) 6,700 cfs (9.10 ft).

* Discharge measurement made on this day.

Note. No gage-height record Jan. 28 to Feb. 4, Feb. 15-27; discharge estimated on basis of records for nearby stations.
NOOKSACK RIVER BASIN 161

South Fork Nooksaok River near Wickersham, Wash.

Location Lat 48°39'50", long 122°07i50", in lot 2, SWi sec. 26, T. 37 N., R. 5 E., on 

left bank three-quarters of a mile upstream from Skookum Creek and 4 miles east of 

Wickersham.

Drainage area.--103 sq mi.

Records available. October 1933 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 385 ft (from river-profile map). Prior 

Uo July 9, 1934, staff gage at same site and datum.

Average discharge.--23 years, 731 cfs (529,200 acre-ft per year).

Extremes. Maximum discharge during year, 19,300 cfs Nov. 3 (gage height, 13.40 ft), from 

rating curve extended above 11,000 cfs; minimum, 112 cfs Sept. 19, 20 (gage height, 

2.13 ft).

1933-56: Maximum discharge, that of Nov. 3, 1955; minimum, 66 cfs Oct. 9, 1940, 

Sept. 11-13, 1944; minimum gage height, 1.95 ft Sept. 24, 1951.

Remarks.--Records good. No regulation or diversion above station. 

Revisions (water years).--WSP 832: 1935-36.

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

feet per second) 

(Stage-discharge relation affected by ice Nov. 14, 15)

Oct. 1 to Nov. 2 Nov. 3 to June 8 June 8 to Sept. 30

2.3 139

2.6 226

3.0 385

3.5 650

4.0 1,000

5.0 1,980

6.0 3,300

7.0 4,980

2.5 208

3.0 400

4.0 950

5.0 1,850

6.0 3,230

8.0 6,830

10.3 11,800

2.1 106

2.4 178

2.7 277

3.0 400

3.5 650

4.0 1,000

5.0 2,050

6.1 3,540

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29 

30 

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

165

152

T55

981

686

354 

441

1,230

1,900

1,360

*758

928

668

628

628

475 

405

362

362

324

295

276

250

1,290

4,560

1,880

1,370

1,690

2,590 

1,820

1,080

30,063

970

9.42

10.85

59,630

Nov.

819

988

11.700

5,350

1,840

1,210 

957

1,170

2,320

1,900

1,030

754

650

620

560

520 

447

442

486

472

419

*391

419

757

1,290

885

852

1,120

1,410 

1,240

43,018

1,434

13.9

15.53

85,320

Dec.

1,150

820

678

597

556

577 

608

629

639

597

2,800

2,640

1,110

840

710

613 

501

501

521

1,070

1,410

2,020

1,250

911

892

885

754

634

566 

531

496

28,506

920

8.93

10.29

56,540

Jan.

486

531

582

*1,010

852

1,120 

766

597

531

472

661

732

937

722

754

1.540 

1,120

1,040

957

937

820

992

1,010

778

639

541

476

447

396

360

352

23,158

747

7.25

8.36

45,930

Feb.

382

344

319

304

300

281 

277

270

266

270

344

501

365

323

277

273 

281

263

238

228

224

23T

*224

231

245

241

234

285

344

8,365

288

2.80

3.02

16,590

Mar.

491

556

700

501

387

344 

348

344

319

288

273

270

263

248

245

259 

277

319

378

409

531

790

1,120

930

722

688

556

674

1,160 

T,010

826

16,226

523

5.08

5.86

32,180

Apr.

639

556

496

661

587

472 sir

496

491

*650

885

937

1,030

1,280

1,280

971 

892

911

1,220

1,650

2,090

1,870

1,460

1,260

1,230

1,220

1,100

859

784 

754

29,242

975

9.47

10.56

58,000

May

790

772

736" 683

971

1,060 

1,220

1,580

1,620

*1,750

1,200

885

766

814

1,070

1,550 

2,090

2.450

2,390

2,130

1,610

1,740

1,760

1,430

1,270

1,380

1,150

1,110

1,390 

1,820

1,850

42,981

1,386

13.5

15.52

85,250

June

1,520

1,260

1,390

1,340

971

918 

1,570

2,760

5,520

2,850

2,280

1,460

1,250

1,440

1,260

1,040 

967

1,080

1,870

*1,400

959

903

814

740

685

857

1,010

895

759 

645

40,415

1,547

13.1

14.59

80,160

July

696

800

746

654

1,270

1,280 

855

865

967

888

800

800

746

645

541

541 

561

572

597

597

541

491

442

428

405

560

556

500

281 

270

263

19,498

629

6.11

7.04

38,670

Aug.

258

254

224

211

205

205 

*208

208

208

202

199

196

199

199

208

208 

181

175

175

170

167

164

159

155

559

251

190

175

211 

202

164

6,252

201

1.95

2.25

12,560

Sept.

154

149

141

154

129

125 

125

125

125

152

156

156

137

125

125

121

116

114

112

167

263

195

159

902

659

*1,020

587

824

1,290 

1,840

10,579

546

5.56

5.75

20,590

Calendar year 1955: Max 11,700 Mln 123 Mean 806 Cfsm 7.83 In. 106.21 Ac-ft 583,400

Water year 1955-56: Max 11,700 Mln 112 Mean 814 Cfsm 7.90 In. 107.62 Ac-ft 591,200

Peak discharge (base, 4,800 cfs). Oct. 25 

cfs (15.40 ft); Nov. 9 (8:50 p.m.) 6,490 cfs 

* Discharge measurement made on this day.

(11 a.m.) 5,610 cfs (7.32 ft); Nov. 5 (11 a.m.) 19,300 

(7.82 ft); Dec. 11 (11 p.m.) 6,160 cfs (7.65 ft).
162 NOOKSACK RIVER BASIN

Skookum Creek near Wickersham, Wash.

Location. Lat 48°40'20", long 122°08'25", In NEi sec. 27, T. 37 N., R. 5 E., on left 

bank 100 ft upstream from private road crossing, 500 ft upstream from mouth, and 

3j miles northeast of Wichersham.

Drainage area. 23.1 sq mi.

Records available . July 1948 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 400 ft (from river-profile map).

Average discharge.--8 years, 138 cfs (99,910 acre-ft per year).

Extremes.--Maximum discharge during year, 1,290 cfs Nov. 3 (gage height, 5.90 ft), from 

rating curve extended above 400 cfs by logarithmic plotting; minimum, 19 cfs Sept. 18-20 

(gage height, 1.87 ft).

1948-56: Maximum discharge, 3,050 cfs Nov. 27 or Dec. 1, 1949 (gage height, 9.0 ft, 

from floodmark), from rating curve extended above 400 cfs by logarithmic plotting; 

minimum, 17 cfs Feb. 9, 10, 1949, Sept. 23, 24, 1951; minimum gage height, 1.70 ft 

Oct. 19, 20, 1952.

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

No regulation or diversion above station.

Revisions (water years).--WSP 1182: 1949. W3P 1286: 1950(M), drainage area.

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

in cubic feet per second)

Oct. 9 to Sept. 30

1.9 

2.2 

2.5

65

108

3.0 

3.5

214

346

1.3 

2.0 

2.3 

2.6

15

28

58

109

3.0 204

4.0 504

5.2 970

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

Day

1

2

3

4

5

6

7

8

9

10

1L

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.

42

39

41

185

122

72

134

283

257

160

*107

122

92

90

85

64

54

4845"

41

39

36

34

169

549

350

220

262

368

253

158

4,521

146

6.32

7.28

8,970

Nov.

120

237

956

450

290

200

160

210

440

310

200

130

110

97

90

82

77

82

88

83

73

*67

83

218

268

158

212

268

308

253

6,320

211

9.13

10.17

12,540

Dec.

226

158

132

113

107

117

117

137

128

124

408

370

201

153

132

117

103

83

104

329

365

408

253

191

173

176

144

117

103

96

87

5,472

177

7.66

8.81

10,850

Jan.

101

90

109

*223

173

234

153

120

loo

87

*168

163

223

146

193

371

228

239

209

199

173

186

186

144

120

100

90

85

73

62

62

4,810

155

6.71

7.74

9,540

Feb.

60

58

58

52

52

48

46

44

42

46

72

68

52

43

41

43

50

40

37

3_i

42

40

*37

*38

47

41

42

80

_80

1,435

49.5

2.14

2.31

2,850

Mar.

96

110

158

94

70

56

66

58

50

44

41

38

36

Je

37

41

46

56

73

73

120

199

245

178

144

142

105

142

268

242

168

3,232

104

4.50

5.20

6,410

Apr.

128

109

96

113

100

83

90

83

85

*120

183

204

237

282

259

188

151

166

248

335

405

362

288

245

234

228

207

160

146

142

5,677

189

8.18

9.14

11,260

May

148

148

130

130

204

226

271

320

314

*326

223

160

142

156

226

323

411

445

427

380

294

329

329

271

253

256

218

209

276

341

323

8,209

265

11.5

13.22

16,280

June

268

231

274

245

178

200

318

517

562

535

350

245

215

231

191

166

L60

178

279

*223

158

151

139

117

109

139

L68

148

124

101

6,920

231

10.0

, 11.14

13,730

July

103

113

105

100

207

191

142

142

148

137

128

135

126

109

92

90

88

90

98

103

100

98

85

80

80

73

68

62

57

54

52

3,256

105

4.55

5.24

6,460

Aug.

51

51

48

45

44

43

*45

43

44

42

42

43

42

42

46

46

41

37

35

36

36

35

34

34

127

50

40

34

41

38

37

1,370

44.2

1.91

2.21

2,720

Sept.

30

29

28

27

24

24

23

23

24

27

38

30

24

23

22

21

20

20

19

38

54

29

34

144

92

*226

101

142

225

316

1,877

62.6

2.71

3.02

3,720

Calendar year 1955: Max 956 Min 34 Mean 140 Cfsm 6.06 In. 82.48 Ae-ft 101,600

Water year 1955-56: Max 956 Mln 19 Mean 145 Cfsm 6.28 In. 85.48 Ac-ft 105,300

Peak discharge (base. 850 cfs).--Oct. 25 (8:20 a.m.) 922 efs (5.08 ft); Nov. 3 (3:30 a.m.) 1,290 

cfs (5.90 ft).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 26, 27, Nov. 4-21, Feb. 15-17; discharge estimated on basis of 

records for stations on nearby streams.
NOOKSACK RIVER BASIN 163

Nooksack River at Deming, Wash.

Location. Lat 48°48'40", long 122°12'15", in lot 12, sec. 6, T. 38 N., R. 5 E., on left 

bank 800 ft downstream from South Fork and 1 mile southeast of Deming.

Drainage area. 580 sq mi.

Records available.--September 1910 to March 1911 (gage heights only), July 1935 to September 1956.Published as "near Deming" 1910-11.

Gage. Water-stage recorder. Datum of gage is 203.6 ft above mean sea level, datum of

~]T929. Prior to Dec. 5, 1910, staff gage at site 1 1/8 miles downstream at different 

datum. Dec. 5, 1910, to Mar. 31, 1911, staff gage at site 5 miles downstream at different datum. July 20 to Sept. 19. 1935, staff gage at same site and datum.

Average discharge. 21 years (1935-56), 3,231 cfs (2,339,000 acre-ft per year).

Extremes. Maximum discharge during year, 38,500 cfs Nov. 3 (gage height, 15.25 ft), from 

rating curve extended above 25,000 cfs; minimum, 980 cfs Oct. 4; minimum gage height, 

4.33 ft Mar. 15.

1935-56: Maximum discharge, 43,200 cfs Feb. 10, 1951 (gage height, 15.69 ft), from 

rating curve extended above 25,000 cfs; minimum, 502 cfs Nov. 29, 1952 (gage height, 

3.72 ft).

Revisions.--The maximum discharge for the water year 1937 has been revised to 

20,900 cfs June 21, 1937 (gage height, 11.02 ft), superseding figure published in 

WSP 832 and 1316.

Remarks. Records good except those for periods of no gage-height record or shifting control, which are fair. No diversion. Slight regulation by powerplant at Excelsior.

Revisions (water years). WSP 1286: 1951.

Rating tables, water year 1955-56, except periods of shifting control (gage 

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

Oct. 1 to Nov. 3 Nov. 4 to Sept. 30

5.0 

5.5 

6.0 

7.0 

8.0

910

1,470

2,220

4,260

7,110

9.0

10.0

11.0

13.0

10,900

15,300

19,900

29, 400

4.2 

5.0 

6.0 

7.0

1,140

1,990

3,370

5,280

8.0 8,O30

9.0 11,700

10.0 15,800

12.0 24,700

Discharge, in cubic feet pe ;ond, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

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.

1,120

1,050

1.000

2,920

3,100

1,660

1,690

3,660

5,850

4,520

*2,970

3,170

2,690

2,930

3,300

2,330

2,140

2,030

*1,970

1,700

1,460

1,420

1,400

3,490

15.600

9,280

*6,000

*7,010

8,120

6,910

4,650

117,140

3,779

6.52

7.51

232,300

Nov.

3,700

3,670

28.000

*22,700

*10,800

7,100

5,460

5,530

7,580

10,600

6,080

4,360

3,400

3,100

2,900

2,800

2,700

*2,600

2,610

2,580

2,370

2,220

*2,240

3,360

5,730

4,550

3,980

5,000

6,080

5,210

179,010

5,967

10.3

11.48

355,100

Dec.

5,190

3,940

3,190

2,730

2,540

2,530

2,700

2,690

3,050

2,760

7,930

12.100

5,850

4,340

3,730

3,270

2,900

2,560

2,700

4,380

5,800

8,100

5,820

4,260

3,850

3,850

3,390

2,820

2,520

2,320

2,150

125,960

4,063

7.01

8.08

249,800

Jan.

2,110

2,060

2,100

3,050

3,150

4,110

3,470

2,680

2,330

2,100

*2,090

2,500

3,300

3,000

2,900

4,500

5.600

4,400

4,300

3,800

3,500

4,000

4,300

3,400

2,900

2,500

2,300

2,100

1,900

1,800

1,750

94,000

3,032

5.23

6.03

186,400

Feb.

1,700

1,650

1,600

1,550

1,500

1,500

1,500

1,400

1,400

1,4OO

1,500

2.100

1,700

1,500

1,400

1,400

*1,400

1,350

1,350

1.500

1,300

*1,300

1,300

1,300

1,380

1,400

1,360

1,440

1,740

42,720

1,473

2.54

2.74

84,730

Mar.

2,100

2,350

2,860

2,360

2,030

1,820

1,800

1,770

1,660

1,520

1,420

1,380

1,350

1,310

1,280

1,310

1,380

1,530

1,780

1,830

2,130

3,110

4,300

4,030

3,310

3,270

2,770

2,860

4,550

4,450

3,780

73,400

2,368

4.08

4.71

145,600

Apr.

3,110

2,760

2,520

3,000

2,760

2.560

2,460

2,360

2,360

2,790

*3,540

3,710

4,110

4,890

5,260

4,370

3,730

3,710

4,490

5,920

7 . 870

7,490

6,340

5,400

4,890

4,770

4,770

3,780

3,420

3,190

121,830

4,061

7.00

7.81

241,600

May

3,210

3,210

2,930

2.870

3,340

3,890

4,320

5,650

6,100

6,560

5,280

*4,110

3,510

3,370

3,930

5,350

7,310

9,710

10 . 700

10,300

8,000

7,490

8,130

7,400

6,500

6,810

6,050

5,440

6,210

7,900

10,200

185,780

5,993

10.3

11.91

368,500

June

8,980

7,310

7,520

8,230

6,180

5,240

6,400

9,120

17.800

16,600

12,400

*7,740

6,210

6,610

6,230

5,560

5,170

5,280

7,680

7,970

6,000

5,000

4,500

4,000

5.800

4,100

5,800

6,800

4,500

4,000

212,730

7,091

12.2

13.64

421,900

July

3,800

4,300

4,100

3,900

4,500

6,200

5,000

4,900

5,800

5,600

5,200

5,600

4,800

4,300

4,000

3,900

3,800

4,000

4,500

5,000

4,800

4,300

4,000

3,800

3,500

3,200

2,800

2,500

2,300

?', 100

128,700

4,152

7.16

8.25

255,300

Aug.

2,000

2,000

2.0OO

2,100

2,100

*2,100

2,120

2,160

2,190

2,130

2,160

2,280

2,390

2,480

2,690

2,450

2,070

2,070

2,210

2,300

2,270

2,150

2,130

2,130

2,590

2,170

1,970

1,700

1,700

1,700

1.600

66,110

2,133

3.68

4.24

131,100

Sept.

1,600

1,500

1,350

1,300

1.200

1,200

1,200

1,250

1,250

1,250

1,250

1,300

1,300

1,250

1,250

1,250

1,200

1,200

1,250

1,300

1,350

1,200

1,200

2,790

2,860

5,120

*3,940

3,560

4,530

6.510

58,510

1,950

3.56

3.75

116,100

Calendar year 1955 : Max 28,000 Min 990 Mean 3,767 Cfsm 6.49 In. 88.15 Ac-ft 2,727,000

Water year 1955-56 : Max 28,000 Min 1,000 Mean 3,841 Cfsm 6.62 In. 90.15 Ac-ft 2,788,000

 ge (base. 15.000 cfs).--Oct. 25 (5 p.m.) 21,800 cfs (11.85 ft); Nov. 3 (2:50 p.m.) 

.25 ft); Nov! 9 (12 p.m.) 18,100 cfs (11.15 ft); Dec. 11 (11:30 p.m.) 20,40O cfs 

.e 9 (8 a.m.) 19,400 cfs (10.95 ft). 

* Discharge measurement made on this day.

Note. No gage-height record Nov. 13-18, Jan. 12 to Feb. 21, June 21, to Aug. 5, Aug. 28 to Sept. 23; 

lischarge estimated on basis of recorded range in stage, 2 discharge measurements, and records for 

tation at Lynden. Shifting-control method used Oct. 1-4, Oct. 16 to Nov. 12, Nov. 19 to Jan. 11, 

une 11-20, Aue. 6-27, Sept. 24-30.
164 NOOKSACK RIVER BASIN

Nooksack River near Lynden, Wash.

Location.--Lat 48°55'10", long 122°29'10", In NE^NE^ sec. 36. T. 40 N., R. 2 E., on right 

bank 150 ft downstream from bridge on State Highway IB, bj miles upstream from Fishtrap 

Creek, 2 miles southwest of Lynden, and 12 miles upstream from mouth.

Drainage area. 636 sq mi.

Records available.--October 1944 to September 1956. Monthly discharge only for some 

periods, published in WSP 1316.

Gage. Water-stage recorder. Datum of gage is 24.4 ft above mean sea level, datum of 1929 

("levels by Corps of Engineers).

Average discharge. 12 years, 3,740 cfs (2,708,000 acre-ft per year).

Extremes.--Maximum discharge during year, 42,600 cfs Nov. 3 (gage height, 21.37 ft); minimum, 1,130 cfs Oct. 1, 2 (gage height, 5.95 ft).

1944-56: Maximum discharge, 46,200 cfs Feb. 10, 1951 (gage height, 21.76 ft); minimum, 595 cfs Nov. 30, 1952 (gage height, 5.01 ft).

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

Ho diversion above station. Slight regulation by powerplant at Excelsior.

Revisions (water years) . WSP 1286: 1945(P), 1947-48(P), 1950-51(P), 1952(M).

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

In cubic feet per second)

Oct. 1 to Nov Nov. 4 to Sept. 3O

5.9 1, 1OO

7.0 1,950

8.O 3,OOO

9.0 4,350

11.0 7,650

13.0 11,500

16.0 18,OOO

19.0 27,400

6.0 1,190

7.0 2,020

8.0 3,080

9.0 4,460

11.0 7,830

13.0 11,500

16.0 18,OOO

20.0 32,800

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

Ibtal

Mean

Cfsra

In.

Ac-ft

Oct.

1,150

1,140

1,170

1,720 

3,560

2,000 

1,630

2,760

5,450

4,660

3,160

2,990

2,760

2,560

3,340

2,470

2,170

*2,030

1,920 

1,770

1,590

1,470

1,390 

2,120

15,400

11,900

6,160

6,810

7,520

8,010

5,210

116,050

3,744

5.89

6.79

230,200

Nov.

4,020

3.47O

24.1OO

31.400 

14,000

8,590 

6,450

5,980

6,020

13,000

7,090

a5,150

a4,300

a3,750

a3, 400

a3,200

a3,000

a2,900

a2,750 

a2,700

*2,590

2,440

2,420 

3,110

6,370

5,390

4,100

5,300

6,560

5,760

199,310

6,644

1O.4

11.65

395,300

Dec.

6,160

4,640

3,690

3,160 

2,860

2,680 

3,120

3,040

3,660

3,210

6,410

14,900

7] 360

4,990

4,O4O

3,460

3,010

2,620

a2,750 

a3,860

5,940

8,910

7,420 

5,190

4,400

4,300

3,930

3,26O

2,830

2,610

2,410

141,020

4,549

7.15

8.25

279,700

Jan.

2,300

2,310

2,320

3,140 

*4,000

5,070 

4,520

3,360

2,830

2,510

2,510

3,160

3,590

3,330

3,030

5,380

5,950

4,610

4,480 

4,310

3,700

4,060

4,630 

3,930

3,230

2,750

2,410

2,260

2,060

1,89O

al.BlO

105,420

3,401

5.35

6.16

209,100

Feb.

al,780

al,740

al,700

al,660 

1,600

1,570 

1,610

1,500

1,460

1,470

1,620

2.520

1,900

1,680

1,470

1,420

1,420

1,400

1.570 

1,370

*1,440

1,460

1,390 

1,410

1,490

1,480

1,450

1,490

1,790

45,480

1,566

2.47

2.66

90,210

Mar.

2,060

2,460

3,000

2,72O 

2,230

1,940 

1,880

1,910

1,750

1,640

1,510

1,460

1,440

1,400

1,360

1,360

1,410

1,530

1,77O 

1,680

2,120

3,210

4,360 

4,710

3,450

3,420

2,900

2,720

4,800

4,650

4,120

77,370

2,496

3.92

4.52

153,500

Apr.

3,300

2,820

 2,540

2,85O 

2,920

2,420 

2,400

2,360

2.240

2,600

3,45O

3,640

4,160

4.96O

5,540

4,560

3,720

3,500

4,190 

5,590

7,560

6,140

6,970 

5,670

5,O60

4,936

4,660

3,950

3,580

3,290

123,810

4,127

6.49

7.24

245,600

May

3,190

3,370

3,000

2,890 

3^200

3,950 

4,320

5,600

6,400

6,830

*5,860

4,370

3,510

3,290

3,700

5,220

7,200

9,160

9,910 

9,6VO

8,010

7,340

8,140 

7,630

6,610

6.86O

6,220

5,460

6,010

7,720

9,130

163,970

5,935

9.33

10.76

364,900

June

9,000

7,340

7,060

8,480 

6,160

4,950 

5,91O

6,930

14,900

16,2OO

13,000

8,460

6,560

6,710

6,640

5,640

5,330

5,33O

*7,650 

6,050

5.96O

5,300

5,030 

4,500

4,070

4,260

5,740

6,130

5,110

4,250

210,650

7,028

11.1

12.33

416,200

July

4,020

4,430

4,790

4,200 

5,040

7,290 

5,460

5,190

5,690

6,160

5,720

6,010

6.16O

5,520

4,360

4,130

4,010

4,160

4,670 

5,22O

5,150

4,630

4,190 

4,000

3,870

3,420

3,060

2.70O

2,430

2,310

2,230

140,700

4,539

7.14

8.23

279,100

Aug.

2.11O

2,080

2,01O

1,630 

1,610

1,680 

*1,91O

1,950

1,980

1,920

1,930

2,040

2.170

2,230

2,450

2,410

2,050

1,940

2,040 

2.12O

2,150

2,060

2,040 

2,050

2,310

2,310

1,990

1,760

1,780

1,86O

1,660

62,670

2,028

3.19

3.68

124,700

Sept.

1,640

1,560

1,4OO

1,310 

1,240

1,210 

1,250

1,300

1,280

1,320

1,440

1,360

1,310

1,310

1,310

1,260

1,250

1,26O

1,270 

1,330

1,600

1,350

1,190 

2,660

*3,19O

5,360

4,660

3,06O

4,200

7,250

61,210

2,040

3.21

3.58

121,400

Calendar year 1955: Max 31,400 Mln 1,060 Mean 3,957 Cfsm 6.22 In. 84.46 Ac-ft 2,865,000

Water year 1955-56: Max 31,40O Mln 1,140 Mean 4,011 Cfsra 6.31 In. 85.65 Ac-ft 2,912,000

Peak discharge (base, 15,000 cfs). Oct. 25 (9:30 p.m.) 21,000 cfs (17.19 ft); Nov. 3 (11:45 p.m.)

42,600 cfs (21.37 ft); Nov. 10 (4 a.m.) 18,500 cfs (16.19 ft); Dec. 12 (5:15 a.m.) 20,000 cfs

(16.79 ft); June 10 (4 a.m.) 17,3OO cfs (15.70 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby stations.
NOOKSACK RIVER BASIN

Fishtrap Creek at Lynden, Wash.

Location.--Lat 48°57'50", long 122°26'00", on north line sec. 16, T. 40 N., R. 3 E., on

 right bank on downstream side of bridge on State Highway 1A, 1 mile north of Lynden.

Drainage area.--24.1 sq mi, of which 18.5 sq mi is in Canada.

Records available.--July 1948 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 110 ft (from topographic map).

Average discharge.--8 years, 36.2 cfs (26,210 acre-ft per year).

Extremes.--Maximum discharge during year, 299 cfs Nov. 3 (gage height, 5.11 ft); minimum,

 3.6 cfs sometime during period Sept. 1-24 (gage height, 1.S4 ft, from recorded range in 

stage).

1948-56: Maximum discharge, 550 cfs Feb. 11, 1951 (gage height, 6.59 ft); minimum, 

0.4 cfs Sept. 10, 1949 (gage height, 1.00 ft).

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

 Mo regulation. Probably some small diversions for minor irrigation and domestic use.

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

In cubic feet per second)

Oct. 1 to Nov Nov. 4 to Sept. 30

1.3

1.4 

2.0

3.7 

5.8

3.0 

4.3

1.2 

1.4 

2.0

3.0 

6.9

3.0 

4.6

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.

5.5

5.5

5.8

7.1

8.1

6.4

6.9

10.5

8.7

9.5

8.9

9.2

9.5

8.9

10.5

9.2

8.4

*7.6

7.4

7.1

6.7

6.4

6.2

11

28

34

32

44

46

56

32

463.0

14.9

918

Nov.

23

25

195

214

113

66

50

46

54

74

57

46

37

33

30

28

27

28

28

31

*32

33

34

51

110

85

56

47

60

89

1,802

60.1

3,570

Dec.

139

93

64

54

47

62

80

88

116

90

184

226

118

74

60

53

46

42

42

40

68

155

138

88

71

71

72

59

51

44

40

2,575

83.1

5,110

Jan.

38

38

40

58

*74

160

131

80

62

56

60

63

71

68

63

100

115

94

89

89

79

97

131

103

79

66

54

48

42

38

.36

2,322

74.9

4,610

Feb.

34

3_2

32

32

34

35

35

33

32

43

55

62

52

45

40

37

35

35

35

37

*40

41

38

41

57

60

58

72

94 '

1,276

44.0

2,530

Mar.

100

87

74

79

73

60

60

67

65

55

46

43

42

40

38

36

34

33

32

32

47

56

59

59

50

60

54

68

134

109

86

1,878

60.6

3,720

Apr.

65

55

*50

61

54

52

53

49

47

48

50

49

48

47

44

38

35

35

36

38

40

35

33

30

27

26

25

22

21

20

1,232

41.1

2,440

May

21

21

20

19

20

21

19.5

18.5

18

19

*22

22

19.5

18

17.5

16.5

16.5

16

15.5

15

14.5

14.5

14

14

13.5

13

13

13

12.5

12

12

521.5

16.8

1,030

June

12

12

14

17.5

14.5

13.5

14.5

20

26

38

31

22

18

18

16.5

15

14

13.5

*16.5

20

16.5

14.5

13

13

13

15

16.5

14.5

13

12

507.5

16.9

1,010

July

11,5

11.5

11

11

11.5

11.5

10.5

10

9.7

9.4

8.9

8.7

8.9

8.7

8.9

8.4

8.2

7.9

7.9

7.6

7.4

7.4

7.4

7.2

7.2

6.9

6.9

6.4

6.4

5^9

5.9

266.9

8.61

529

Aug.

6.2

8.9

7.9

7.2

6.9

*6.4

5.9

5.7

5.7

5.5

5.5

5.5

5.2

5.2

5.5

5.9

5.5

5.0

4.8

4.6

4.5

4.3

4.1

4.3

4.3

4.5

4.5

4.5

4.6

4.5

4.1

167.2

5.39

332

Sept.

4.0

3.9

3.9

3.8

3.8

3.9

4.0

4.1

4.3

4.5

4.5

4.8

4.7

4.4

4.2

3.9

3.8

3.8

3.9

4,2

5,0

4,7

4.5

8.8

*11.5

14

11.5

12

21

sz

204,4

6.81

405

Calendar year 1955 : Max 226 Mln 4.7 Mean 35.7 Ac-ft 25,810

Water year 1955-56 : Max 226 Mln 3.8 Mean 36.1 Ac-ft 26,200

Peak discharge (base. 220 cfs). Nov. 3 (6 p.m.) 299 cfs (5.11 ft); Dec. 11 (12 p.m.) 282 cfs 

(4.98 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 12-18, Feb. 6-20, Apr. 6 to May 5, Sept. 1-24; discharge estimated on basis of weather records and records for stations on nearby streams.
166 UPPER COLUMBIA RIVER BASIN

KOOTENAI RIVER BASIN

Kootenai River at Newgate, British Columbia 

(International gaging station)

Location.--Lat 49°01', long 115°10', on left bank at old highway bridge site, 0.7 mile 

northwest of Newgate and 0.9 mile north of international boundary.

Drainage area.--7.660 sq mi, approximately. 

Records available.--October 1930 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,310.23 ft above mean sea level (datum of 

Seodetic Survey of Canada, adjustment of 1945). Prior to Oct. 1, 1940, staff gage at 

same site at datum 1.00 ft higher. Oct. 1, 1940, to Apr. 30, 1947, staff gage at 

present site and datum.

Average discharge.--26 years, 10,240 cfs (7,413,000 acre-ft per year).

Extremes.--Maximum discharge during year, 92,000 cfs May 22 (gage height, 14.08 ft); minimum recorded, 1,850 cfs Feb. 1 (gage height, 1.27 ft), but may have been less during 

period of ice effect.

1930-56: Maximum discharge, 98,200 cfs May 28, 1948 (gage height, 15.02 ft); minimum observed, 994 cfs Feb. 7, 1936; minimum gage height observed, 0.21 ft Jan. 11, 1944.

Remarks.--Records excellent except those for periods of ice effect, which are fair. Records give total flow of main channel and slough.

Cooperation.--This station is maintained by Canada under agreement with the United States.

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 23, 24)

Oct. 1 to May 22 May 23 to Sept. 30

1.3 

2.0 

3.0 

4.0 

5.0 

6.0

1,890

3,080

5,350

8,300

11,800

16,000

7.0

8.0

9.0

10.0

12.0

14.0

21,000

26,800

34,200

43,500

65,800

91,000

3.3 4,900

4.0 6,810

5.0 1O.40O

6.0 14,600

7.0 19,800

8.0 26,100

9.0 34,200

10.0 43,500

12.O 65,200

14.0 88,900

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

Tbtal

Mean

Cf sm

In.

Ac-ft

Oct.

*4,840

4,890

4,610

4,540

4,560

4,580

4,560

4,590 

4,490

5,270

6,650

6,060

5,690

5,320

5,180

5,210

5,410

5,460

5,550

5,940

6,320

6,320

6,170

5,910

6,830

10,700

14,900 

14,000

11,800

10,400

9,440

205,990

6,640

0.87

1.00

408,600

Nov.

8,780

8,030

7,550

7,970

10, 100

9,440

*8,690

8,060 

7,610

7,340

7,100

5,660

4,320

3,700

5,290

3,480

3,540

3,680

4,030

4,490

4,680

4,740

4,710

4,580

4,660

4,890

4,660 

4,340

4,280

4,250

172,650

5,760

0.75

0.84

342,400

Dec.

4,520

4,320

4,230

4,140

4,010

4,010

3,970

3,880 

3,880

*3,750

5,730

3,970

3,920

3,100

2,710

2,460

2,360

2,170

2,220

2,510

3,100

3,540

4,080

4,210

4,140

4,030

4,080 

4,250

3,790

3,500

3,270

111,650

3,600

0.47

0.54

221,500

Jan.

3,160

3,000

3,270

3,460

3.75O

5,810

3,700

3,640 

3,540

3,420

3,350

3,290

3,250

3,190

3,060

2,910

*2,850

2,930

3,000

3,040

3,060

3,000

3,020

3,000

2,910

2,550

2,330 

2,430

2,180

2,040

2,170

94,290

3,040

0.40

0.46

187,000

Feb.

1,960

2,020

2,150

2,300

2,430

2,530

2,750

2,840 

2,820

2,800

2,820

2,760

2,670

b2,380

b2,200

b2,080

bl,920

bl,980

b2,270

2,510

2,620

2,750

2,760

2,750

2,760

2,620

b2,580 

b2,550

b2,510

72,090

2,490

0.33

0.36

143,000

Mar.

62,630

b2,540

*b2,430

b2,350

b2,200

b2,200

b2,100

b2,200 

b2,320

b2,200

b2,100

b2,000

b2,000

2,690

2,760

2,820

2,930

2,930

2,950

3,140

3,270

3,350

3,520

3,950

4,420

4,990

5,150 

4,610

4,340

4,250

4,210

95,530

3,080

0.40

0.46

189,500

Apr.

,280

,230

,120

,170

,340

,230

,060

,880 

,860

* ,080

,420

,710

,210

,030

,370

9,290

11,700

12,800

13,300

14,600

17,400

20,200

20,600

19,100

17,000

15,400

14,400 

13,800

13,400

13,000

294,980

9,830

1.28

1.43

585,100

May

12,500

11,600

10, 800

10,200

9,780

9,600

*9,880

11,400 

14,000

16,200

18, 400

19,600

19,400

18, 500

18,700

21,000

28,400

35,400

50,100

65,700

78,600

89,800

88,600

*83,900

81,400

78,700

75,200 

73,800

73,400

73,800

74,300

1,282,660

41,400

5.40

6.23

*2,544

June

75,400

80,700

81,900

79,000

*78,500

75,800

67,400

54,500 

45,000

44,600

51,900

54,900

47,800

40,600

37,900

39,000

45,200

49, 100

48,600

47,900

47,300

44,300

39,500

37,300

36,400

33,500

30,100 

28,400

30,500

30,800

tt.,503 . 8

50,100

6.54

7.30

*2,983

July

27,700

25,000

24,000

*25, 200

25, 800

26,300

27,200

26,700 

25,600

26,000

27,900

28,800

28,900

29,900

50,800

28,700

26,300

24,500

23,000

22,400

22,200

22,000

21,800

20,700

19,600

18,900

*17,800 

16,200

15,300

14,200

13,300

732,700

23,600

3.08

3.55

*1,453

Aug.

12,700

12,200

12,000

12,000

12,000

11,400

10,600

9,920 

9,640

9,560

9,640

9,560

9,160

8,860

8,780

8,820

8,780

8,780

8,640

8,320

8,070

7,930

7,960

7,860

7,930

7,930

8,070 

7,960

7,860

7,660

7,570

288,160

9,300

1.21

1.40

571,600

Sept.

7,540

6,840

6,600

6,400

6,150

5,980

5,820

5,630 

5,500

5,420

5,370

5,320

5,260

5,060

5,030

5,080

5,110

5,110

5,080

5,110

*5,130

5,160

5,260

5,160

5,030

4,950

5, 030 

5,080

5,630

5,650

165,490

5,520

0.72

0.80

328,200

Calendar year 1955: Max 69,800 Min 1,66O Mean 11,000 Cfsm 1.44 In. 19.54 Ac-ft 7,986,000

Water year 1955-56: Max 89,800 Mln 1,320 Mean 13,700 Cfsm 1.79 In. 24.37 Ac-ft 9,957,000

* Discharge measurement made on this day.

* Expressed In thousands.

b Stage-discharge relation affected by Ice.
KOOTENAI RIVER BASIN 167 

Fisher River near Jennings, Mont.

Location. Lat 48° 14' 40", long 115° 17' 10" , InNWiSE^sec. 27, T. 29N..R. 29 W., on right 

bank 80 ft below bridge, 1 mile downstream from Wolf Creek, 9 miles upstream from mouth, 

and 9 miles southeast of Jennings.

Drainage area.--780 sq mi.

Records available.--Deeember 1950 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 2,443.23 ft above mean sea level, datum of 

1929 (Corps of Engineers benchmark).

Average discharge.--5 years (1951-56), 600 cfs (434,400 acre-ft per year).

Extremes.--Maximum discharge during year, 6,320 cfs Apr. 17 (gage height, 7.32 ft); minimum, 116 cfs Oct. 4.

1950-56: Maximum discharge, that of Apr. 17, 1956; minimum daily, 60 cfs Nov. 30, 

1952.

Maximum discharge known, 6,560 cfs about May 22, 1948, from slope-area determination 

of peak flow at site ?| miles downstream.

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

which are poor.

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

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

(Shifting-conbrol method used Apr. 14-17)

Oct. 1 bo Apr. 17 Apr. 18 to Sept. 30

1.4 104 3.0 795 1.3 125 3.O 828

1.5 129 4.0 1,520 1.5 153 4.0 1,680

1.7 183 5.0 2,480 1.7 199 5.0 2,820

2.0 280 6.0 3,670 2.0 301 7.5 6,650

2.5 510 8.0 6,690 2.5 537

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

126

122

119

116

126

139

129

126

244

666

598

374

308

276

276

266

242

*226

226

245

226

210

195

189

223

223

223

216

226

259

270

7,410

239

0.306

0.35

14,700

Nov.

245

226

242

464

1,250

814

609

*500

435

505

520

380

320

290

260

240

240

260

280

310

396

352

347

334

352

440

356

316

276

259

11,798

393

0.504

0.56

23,400

Dec.

256

245

235

210

180

170

180

*175

190

201

204

460

320

220

140

170

160

170

240

300

700

1,200

2,110

1,490

1,140

1,020

886

771

723

587

500

15,553

502

0.644

0.74

30,850

Jan.

480

510

540

565

670

570

532

516

490

*406

440

420

406

388

374

360

360

338

329

316

316

304

300

292

259

220

200

180

180

170

160

11,645

376

0.482

0.56

23,100

Feb.

150

140

160

190

200

220

240

230

220

220

230

230

210

*190

170

160

180

210

240

280

300

320

350

340

330

330

330

340

350

7,060

243

0.312

0.34

14,000

Mar.

356

360

347

338

320

300

292

252

*207

189

166

170

180

185

189

192

198

207

219

256

276

312

401

648

970

1,350

1,410

1,310

1,320

1,380

1.510

15,810

510

0.654

0.75

31,360

Apr.

1,530

1,490

1,470

1,520

1,580

1,500

1,500

1,460

1.450

1,590

*1,890

2,180

2,490

3,120

4,100

5,080

5,840

5.960

*5,270

*5,240

5,720

5,950

5,500

*4,730

4,070

3,470

3,280

3,180

3,000

2,780

97,940

3,265

4.19

4.67

194,300

May

2,620

2,390

2,160

2,000

1,950

1,850

1,870

2,200

*3,460

3,920

3,720

3,260

2,870

2,650

2,640

3,000

3,700

4,180

4,550

*4,710

4.760

4,250

*3,740

*3,520

3,430

3,030

2,850

£,690

2,530

2,370

*2 29O

95,160

3,070

3.94

4.54

188,700

June

2,440

2,430

2,100

1,920

1,790

1,510

1,310

1,180

1,230

1,290

1,270

1,050

*938

905

892

879

905

841

809

809

740

686

668

651

618

569

548

569

542

485

32,574

1,086

1.39

1.55

64,610

July

460

456

475

485

465

470

451

422

403

389

389

380

366

398

362

*327

148

293

278

267

263

256

246

236

223

217

208

199

192

189

^84

10,259

331

0.424

0.49

20,350

Aug.

184

184

189

192

186

182

176

172

166

166

159

159

157

155

151

151

126

147

145

*145

143

140

139

139

140

151

168

161

161

168

155

4,979

161

0.206

0.24

9,880

Sept.

148

145

142

142

140

139

139

137

136

133

*132

131

131

129

127

125

126

129

127

129

135

a!38

a!40

a!38

a!35

a!34

a!33

a!36

a!45

al5D

4,071

136

0.174

' 0.19

8,070

Calendar year 1955 : Max 3,340 Mln 94 Mean 505 Cfsm 0.647 In. 8.78 Ac-ft 366,000

Water year 1955-56 : Max 5,960 Mln 116 Mean 859 Cfsm 1.10 In. 14.98 Ac-Ft 623,300

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby stations. 

Note.--Stage-discharge relation affected by ice Nov. 11-20, Dec. 5-9, 13-21, 31, Jan. 1-3, 26-31, 

Feb. 1-29, Mar. 5, 6, 12-14.

467Z40 O -58 -12
168 KOOTENAI RIVER BASIN

Kootenai River at Libby, Mont.

Location. Lat 48°24'00", long 115°33'10", in SE£SWi sec. 34, T. 31 N., R. 31 W., on right 

bank 1,800 ft downstream from highway bridge at Libby and 1 mile downstream from Libby 

Creek.

Drainage area. 10,240 sq mi, approximately.

Records available.--October 1910 to September 1956. Monthly only for some periods, published in WSP 1316.

Gage. Water-stage recorder. Datum of gage is 2,041.54 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Aug. 28, 1931, staff, chain, and wireweight gages 1,800 ft upstream at different datum.

Average discharge. 46 years, 11,870 cfs (8,594,000 acre-ft per year).

Extremes. Maximum discharge during year, 96,600 cfs May 23 (gage height, 18.63 ft); minimum, 1,880 cfs Feb. 17 (gage height, 0.80 ft).

1910-56: Maximum discharge, 121,000 cfs June 21, 1916 (gage height, 20.7 ft, present 

datum, derived from gage-relation study); minimum observed, 895 cfs June 11, 1930 (discharge measurement).

Remarks. Records good except those for periods of ice effeet, which are poor. Diversions 

for irrigation of about 4,200 acres from tributaries above station.

Revisions (water years) . WSP 1042: 1933. WSP 1246: 1912(M) , 1915(M) , 1916, 1918-19(M) , 

1924-27(M) .

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 Apr. 1-10, Apr. 15 to June 6)

0.9 

2.0 

4.0 

6.0

2,080

4,570

10,200

17,500

8.0

12.0

19.0

26,600

49,500

101,000

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

25 

24

25

26

27 

28 

29

30 

31

Total

Mean

Cfsm

Ac-ft

Oct.

5,450

5,290

5,260

5,080

5,080

5,130 

5,080

5,080

5,450

7,240

7,880 

7,740

6,950

6,500

6,260

6,180

*6,020 

6,200

6,280

6,500

6,840

7,010

6,920 

6,730

6,780

8,920

13,800 

15,800 

13,800

12,300 

11,100

230,650

7,440

0.727

0.84

457,500

Nov.

10,200

9,330

8,760

9,500

12,700

12,800 

*11,300

10,100

9,330

9,120

9,090 

8,050

6,480

5,500

4,870

'3,910

3,960 

4,770

4,980

5,660

6,070

6,340

6,450 

6,120

6,100

6,310

5,850 

5,580 

5,240

5,450

219,920

7,331

0.716

0.80

436,200

Dec. 

5,390

5,480

,340

,130

,980

,950 

,920

* ,800

,770

,740

,570 

,450

,260

,270

,890

b5,600

b5,400 

b3,600

b5,700

b4,000

4,600

5,930

7,940 

7,746

6,950

6,560

6,760 

6,560 

6,100

5,960 

5,420

162,760

5,250

0.513

0.59

322,800

Jan.

b4,700

b4,800

b5,000

5,180

5,910

5,800 

5,640

5,580

5,370

*5,080

5,030 

4,800

4,700

4,770

4,620

4,440

4,150 

4,100

4,080

4,130

4,180

4,180

4,180 

4,220

4,080

3,820

3,650 

b3,300 

b3,100

b2,900

b2,700

138,190

4,458

0.435

0.50

274,100

Feb.

b2,500

b2,400

b2,500

b2,600

2,680

3,260 

3,650

3,700

3,820

4,150

4,270 

4,250

b3,800

*b3,300

b2,800

b2,400

b2.200 

b2,600

b2,900

3,390

3,550

3,620

3,720 

3,650

3,580

3,580

3,530 

3,420 

3,440

95,260

3,285

0.321

0.35

188,900

Mar.

3,530

3,480

3,530

3,510

3,390

3,230 

3,210

3,280

*3,230

3,190

2,880 

2,946

3,100

3,070

3,140

3,260

3,420 

3,700

3,700

4,010

4,320

4,570

5,050 

5,830

7,040

8,970

9,090 

8,340 

7,740

7,650 

7 j 880

143,280

4,622

0.451

0.52

284,200

Apr.

,820

,620

,540

,650

,020

,880 

,570

,290

* ,120

,480

8,430 

9,180

10,000

11,600

14,000

17,900

21,500 

24,400

*24,600

25,900

29,700

34,000

54,200 

*31,200

27,200

24,200

22,500 

21,600 

20,700

19,900

508,700

16,960

1.66

1.85

*1,009

May

18,700

17,700

16,300

15,100

14,400

15.900 

13,900

16,100

*22,500

26,600

28,800 

28,600

27,400

25,900

26,000

29,600

38,200 

50,200

62,000

72,800

83,100

92,000

95,500

aa'eoo

84,700

81,300 

78,200 

77,400

76,800 

77,300

*1,490.5

48,080

4.70

5.41

$2,956

June

78,6OO

82,000

84,400

81,900

79,500

78,200 

70,800

60,100

49,400

46,100

50,100 

55,500

51,800

*44,800

40,700

40,300

45,100 

49,600

50,000

49,000

48,200

46 , 000

42,200 

39,300

37,900

36,200

33,200 

51,200 

31,700

32,400

$1,566.2

52,210

5.10

5.69

$5,107

July

30,500

27,600

26,200

26,400

27,700

27,900 

28,700

28,900

27,500

27,300

28,600 

50,100

30,200

31 , 100

32.500

51,200

* 28, 800 

26,800

25,200

24,200

24,000

25,600

25,400 

25,000

21,800

20,900

20,000 

18,900 

17,500

16,500 

15.500

792,100

25,550

2.50

2.88

$1,571

Aug.

14.400

13,900

13,500

13 , 200

13,300

13,000 

12,200

11,600

11,100.

10,900

10 , 900 

10 , 900

10,600

10,200

10,000

9,960

9,960 

9,960

9,900

9,600

*9,540

9,030

8,850 

8,850

8,880

9,030

9,090 

9,090 

9,000

8,880 

8. 640

327,960

10,580

1.03

1.19

650,500

Sept.

8,400

8,020

7,620

7,460

7,180

6,950 

6,730

6,500

6,280

6,180

*6,040 

6,020

5,880

5,800

5,690

5,610

5,640 

5,690

5,690

5,690

5,740

5,740

5,830 

5,880

5,770

5,580

5,560 

5,580 

5,880

6,390

187,020

6,234

0.609

0.68

370,900

Calendar year 1955: Max 

Water year 1955-56: Max

69,900 Min 1,700 Mean 12,640 Cfsm 1.23 In. 16.76 Ac-ft 9,148,000 

95,500 Min 2,200 Mean 16,020 Cfsm 1.56 In. 21.30 Ac-ft 11,630,OOO

Peak discharge (base, 57,000 efs). May 23 (9 to 10 a.m.) 96,600 cfs (18.63 ft).

* Discharge measurement made on this day.

* Expressed in thousands.

b Stage-discharge relation affected by ice.
KOOTENAI RIVER BASIN 169

Lake Creek at Troy, Mont.

Location. La t 48° 26'40", long 115° 52'30", in SW£ sec. 18, T. 31 N., R. 33 W., on right 

Dank a quarter of a mile downstream from powerplant, half a mile upstream from mouth, 

and lz miles southeast of Troy.

DraInage area.--210 sq ml.

Records available.--January 1945 to September 1956.

Gage.--Water-stage recorder. Altitude of gage Is 1,900 ft (from topographic map). Prior 

Eo Nov. 1, 1946, wire-weight gage at site a quarter of a mile upstream at different 

datum.

Average discharge.--11 years, 523 cfs (378,600 acre-ft per year).

Extremes.--Maximum discharge during year, 3,150 cfs May 21 (gage height, 7.05 ft); minimum daily, 143 cfs Oct. 2, 3.

1945-56: Maximum discharge, 3,250 cfs May 30, 1948 (gage height, 8.28 ft); minimum, 

2.0 cfs Sept. 1, 1947, Sept. 15, 1948; minimum daily, 55 cfs Nov. 27, 1952.

Remarks.--Records fair. Large diurnal fluctuation at low flow and some at high flow 

caused by small dam at powerplant diversion. Water diverted returns to stream at 

powerplant above station. Natural regulation by Bull and Spar Lakes.

Revisions.--WSP 1216: Drainage area.

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

in cubic feet per second) 

(Shifting-control method used Feb. 11-15, May 21-23)

Oct. 1 to May 21 May 22 to Sept. 3O

3.6 131

4.0 240

4.5 450

5.0 

6.0 

7.1

750

1,700

3,020

3.7 

4.0 

4.5

145

210

395

5.0 690

6.0 1, 6OO

7.1 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

Cfsm

In.

Ac -ft

Oct.

148

143

T4T

150

192

153

170

170

334

729

620

480

430

390

355

380

*415

326

342

330

334

334

292

282

346

420

395

415

375

370

385

10,348

334

1.59

1.83

20,520

Nov.

346

360

390

548

972

715

*614

608

566

590

560

500

465

450

460

495

450

465

495

405

390

395

4OO

346

490

470

405

350

360

338

14,398

480

2.29

2.55

28,560

Dec.

346

318

310

330

306

292

*268

292

278

261

240

668

590

490

484

578

522

626

644

602

785

778

876

778

708

701

722

656

638

614

578

16,279

525

2.50

2.88

32,290

Jan.

548

548

554

534

650

572

548

530

*542

490

485

465

460

450

410

465

420

400

395

385

346

338

415

338

338

310

322

318

326

269

318

13,559

437

2.08

2.40

26,890

Feb.

314

'310 330

306

314

272

272

254

254

258

258

261

*275

258

258

247

250

250

254

237

240

247

219

237

237

254

234

228

244

7,572

261

1.24

1.34

15,020

Mar.

247

244

247

231

234

228

213

*225

213

207

195

216

204

195

192

201

195

207

198

222

222

282

338

420

518

680

^38

536

560

566

554

9,628

311

1.48

1.71

19,100

Apr.

542

566

542

548

554

506

480

524

480

530

*566

632

680

813

954

1,210

1,250

1,280

1,320

*1,400

1,610

1,790

1,760-

1,690

1,580

1,460

1,420

1,400

1,350

1,280

30,717

1,024

4.88

5.44

60,930

May

1,240

1,170

1,070

1,020

981

936 91B1,130

*1,380

1,480

1,580

1,460

1,390

1,320

1,340

1,560

1,940

2,310

2,550

*2,730

2,940

*2,920

2,820

2,810

*2,690

2,610

2,530

2,440

2,480

2,470

*2,480

58,722

1,894

9.02

10.40

116,500

June

2,560

2,490

2,340

2,300

2,230

1,990

1,800

1,680

1,710

1,830

1,830

1,570

*1,450

1,370

1,380

1,380

1,350

1,280

1,2,50

1,240

1,160

1,090

1,070

1,030

961

918

886

878

862

781

44,666

1,489

7.09

7.91

88,590

July

753 74-6

718

697

677

690

670

632

599

618

599

573

506

573

518

512

*456

445

456

390

395

386

415

372

346

342

330

314

302

326

3O6

15,662

505

2.40

2.77

31,070

Aug.

286

294

274

282

264

286

270

264

249

243

228

240

249

243

222

225

231

213

200

228

*208

208

200

198

205

200

249

190

213

213

190

7,265

234

1.11

1.29

14,410

Sept.

190

TIS

190

188

185

183

183

175

173

188

*173

169

169

165

161

161

173

159- 153

163

167

165

153

167

159

157

157

161

161

161

5,094

170

0.810

0.90

10,100

Calendar year 1955: Max 2,380 Mln 116 Mean 486 Cfsm 2.31 In. 31.43 Ac -ft 352,100

Water year 1955-56: Max 2,940 Mln 143 Mean 639 Cfsm 3.04 In. 41.42 Ac-ft 464, OOO

Discharge measurement made on this day.
170 KOOTENAI RIVER BASIN

Yaak R iver near Troy, Mont.

Location. Lat 48°33'45", long 115°58'05", in NjSEij-SEir sec. 5, T. 32 N. , R. 34 W. , on 

right bank 400 ft upstream from bridge on U. 3. Highway 2, a quarter of a mile upstream from mouth, and 7f miles northwest of Troy.

Drainage area.--766 sq mi.

Records available.--October 1910 to September 1916 (fragmentary record), March to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,850 ft (river-profile survey).

Oct. 15, 1910, to Sept. 30, 1916, staff gage at several sites within 11 miles of present site at various datums.

Extremes.--Maximum discharge during period March to September 1956, 12,100 cfs May 21 

(gage height, 9.70 ft in gage well, 10.8 ft from outside gage); minimum, 116 cfs 

Sept. 18.

1910-16, 1956: Maximum discharge, that of May 21, 1956; minimum not determined. 

Flood of May to June 1948 reached a stage of 11.0 ft, from floodmarks (discharge, 

12,500 cfs). Flood of May 1954 reached a stage of 11.4 ft, from floodmarks (discharge, 13,400 cfs).

Remarks.--Records good.

Rating table, Mar. 1 to Sept. 30, 1956 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Aug. 18-20)

2.9

3.0 

3.5 

4.0 

4.5 

5.0

108

120

230

415

680

1,100

6.0 

7.0 

8.0 

9.0 

9.5

2,430

4,200

6,560

9,690

11,400

Discharge, in cubic feet per second, March to September 1956

Day

1 

2

3

4

5

6

7

8

9

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. Nov . Dec . Jan. Feb. Mar.

265 

265

265

265

265

265

265

265

265

265

248

265

265

265

265

265

265

265

282

318

335 

355 

465

634

955

1,590

1,540

1,310

1,140

1,100

1,200

15,977

515

0.672

0.7S

31,690

Apr.

1,180 

1,090

1,040

1,090

1,270

1,190

1,130

1,010

1,000

*1,270

1,790

2,080

2,440

3,140

4,040

4,920

5,100

5,300

5,470

*5,940

6,850 

7,440 

6,790

*5,780

4,960

4,440

4,260

4,240

4,200

4,040

104,490

3,483

4.55

5.07

207,300

May

3,720 

3,350

2,980

2,770

2,630

2,610

2,920

3,800

*4,940

5,780

6,120

5,260

4,500

4,300

4,760

6,010

7,830

9,380

10,000

10 , 600

*11,000 

*9,790 

8,650

8,910

8,420

*7,230

6,730

6,230

5,840

5,640

5,380

188,080

6,067

7.92

9.13

373,100

June

*5,550 

5,160

4,550

4,360

4,OOO

3,260

2,760

2,490

2,500

2,710

2,680

2,180

*1,940

1,830

1,930

2,030

1,920

1,750

1,640

1,560

1,400 

1,290 

1,210

1,120

1,050

946

886

878

838

758

66,956

2,232

2.91

3.25

132,800

July

715 

687

680

715

674

660

701

628

582

550

525

510

485

525

500

485

*475

442

411

387

371 

359 

339

324

314

304

293

286

279

265

262

14,733

475

0.620

0.72

29,220

Aug.

254 

262

276

286

272

262

251

240

234

230

224

224

221

212

209

206

200

200

200

*195

185 

180 

173

171

17T

178

195

209

215

200

173

6,708

216

0.282

0.33

13,310

Sept.

161 

151

147

143

143

141

139

134

132

128

128

*124

123

122

120

119

118

116 Tie

119

135 

135

130

129

129

128

132

137

143

19B

4,022

134

0.175

0.20

7,980

Calendar year : Max Min Mean Cfsm In. Ac-ft

Water year : Max Min Mean Cfsm In. Ac-ft

* Discharge measurement made on this day.

Mote. No gage-height record Mar. 1-7; discharge estimated.
KOOTENAI RIVER BASIN 171

Kootenai River at Leonia, Idaho

Location.--Lat 48°37', long 116°03>, In NW^NWi sec. 20, T. 33 N., R. 34 W., on right bank 

at Leonia, 450 ft east of Montana-Idaho State line and half a mile upstream from 

Boulder Creek.

Drainage area.--11.740 sq mi, approximately. 

Records available.--March 1928 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,700.25 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. Prior to Nov. 13, 1928, chain gage on bridge 

250 ft upstream at datum 0.41 ft lower.

Average discharge.--28 years, 13,650 cfs (9,882,000 acre-ft per year).

Extremes.--Maximum discharge during year, 115,000 cfs May 23 (gage height, 121.65 ft); min- 

 imum daily, 3,000 cfs Feb. 17; minimum gage height, 101.35 ft Mar. 11.

1923-56: Maximum discharge, 123,000 cfs May 28, 1948 (gage height, 123.40 ft); minimum, 996 cfs Dec. 9, 1936; minimum gage height, 97.56 ft Dec. 10, 1929.

Floods in June 1894 and 1916 reached stages of 124.6 and 121.6 ft, respectively, from 

information by Great Northern Railway Co.

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 14,600 acres.

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

Day

1

2

3

4

5

6

7

8

9

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.

5,830

5,670

,600

,480

* ,570

* ,510

,540

,640

,360

,500

1 ,600

,760

,640

,910

,450

,350

,220

,180

,180

,420

,680

,840

,710

,550

,940

9,630

14,000

17,500

15,800

14,100 

12,800

263,760

8,508

0.725

0.84

523., 200

Nov.

*11,700

10, 800

10, 200

11,800

17,500

16,800

14,500

12,900

11,600

11,600

11,600

10,400

8,600

g6,930

g6,960

g5,360

g5,900

g5,770

a6,300

g6,700

a6,800

g6,860

g7,120

g7,280

g7,340

a7 , 200

a7,000

a6, 700

g6,540

g6,700

273,460

9,115

0.776

0.87

542,400

Dec.

g6,770

aS,700

a6, 500

a6,300

*5,960

5,930

5,860

,800

,770

,640

,670

,280

,000

,800

,600

,300

,000

,300

,400

,800

5,800

8,000

10,000

11.000

10,500

10,000

9,600

9,200

8,100

8,400

7, OO

210,480

6,790

0.578

0.67

417,500

Jan.

6,800

6,500

6,600

7,000

8,110

8,040

7,910

7,810

7,550

7,120

6,920

6,820

6,660

6,520

6,360

6,290

5,960

5,770

5,800

5,800

5,770

5,770

*5,770

5,670

5,480

5,190

4,600

4,500

4,500

4,500 

4,500

192,390

6,206

0.529

0.61

381,600

Feb.

3,800

*3,400

3,300

3,500

3,800

4,200

4,300

4,300

4,400

5,000

5,000

5,000

4,500

4,100

3,800

3,400

3,000

3,200

3,500

3,900

4,210

4.380

4,530

4,500

4,440

4,350

4,320

*4, 150

4,090

------

118,370

4,082

0.348

0.37

234,800

Mar.

4,120

4,150

4,240

4,270

4,210

4,010

4,010

4,070

3,980

3,980

3,820

3,790

3,840

5,820

3,870

3,980

4,120

4,350

4,660

4,900

5,280

5,600

6,560

7,680

9,730

12,800

15.200

11,900

10,900

*10, 500

10, 900

187,040

6,034

0.514

0.59

371,000

Apr.

10,900

10, 600

10,300

10, 400

11,000

10,800

10,400

9,920

9,560

10,200

11,900

13,500

14,900

17,600

21,700

27, 100

31, 100

35,000

55,700

37,700

43,200

49.500

49, 100

44,500

58,700

34,200

31,800

*30,700

29 , 500

28,200

729,680

24,320

2.07

2.31

*1,447

May

26,600

25,000

23,000

21,400

20,600

19,900

20,300

23,200

31,200

38,200

41,500

39,600

37,000

34,800

35, 400

41,400

54, 200

69,800

83,800

96,200

107 , 000

*11 3,000

115,000

113,000

110,000

104,000

99,000

94,600

92,700

91,700 

*9 1,900

1,915,000

61,770

5.26

6.07

*3,798

June

92,900

95,800

97,500

94,900

91,200

88,600

81,500

70,000

58,000

55,700

*57,100

62,400

59,200

50, 600

46,200

45,200

*49,500

54,800

55,600

54,300

53,300

51,300

47,000

45,200

41,200

39,000

35,600

33,300

55.200

55,800

1,769,500

58,980

5.02

5.61

*5,510

July

52,500

29,700

28,100

27,800

28,900

29,200

29,800

30,000

29 , 000

28 , 500

29 , 200

30 , 800

30,900

31,700

52,700

32,500

29,900

27 , 900

26 , 400

25,200

24,800

24,500

24,200

*25,700

22,700

21,800

21,000

19,900

18,600

17,400 

16,400

825,500

26,630

2.27

2.62

*1,637

Aug.

15,500

14,900

14,500

14,300

14,200

14,100

13,400

12,700

12,100

11,800

11,700

11,700

11,500

11,100

10,800

10, 600

10, 600

10, 600

10,500

10,400

10,000

9,690

9,460

9,460

9,500

9,560

*9,760

9,760

9,760

9,590 

9,550

552,870

11,580

0.969

1.12

699,900

Sept.

9,100

8,640

8,270

8,040

7,810

7,520

7,320

7,090

6,920

6,790

6,620

6,560

6,490

6,360

6,230

6,060

6,130

6,100

6,100

6,100

6,160

6,200

6,230

6,350

6,230

6,100

6,050

6,060

6,160

6,920

202,670

6,756

0.575

0.64

402,000

Calendar year 1955: Max 78,500 Win 2,120 Mean 14,570 Cfsm 1.24 In. 16.86 Ac -ft 10,550,000

Water year 1955-56: Max 115,000 Win 3,000 Mean 19,240 Cfsm 1.64 In. 22.32 Ac-ft 13,960,000

* 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 Bonners Perry and intervening tributaries.

g Computed from once-daily wire-weight-gage readings.

Note.--Stage-discharge relation affected by ice Dec. 13 to Jan. 4, Jan. 27 to Feb. 20.
172 KOOTENAI RIVER BASIN

Boulder Creek near Leonia, Idaho

Location.--Lat 48°36', long 116°06', in NE^ sec. 32, T. 61 N., R. 3 E., on right bank 

three-quarters of a mile downstream from McGinty Creek, three-quarters of a mile upstream from buildings of the Idamont Lead-Zinc Mines Co., 2\ miles southwest of Leonia, 

and 2tr miles upstream from mouth.

Drainage area. 53 sq mi, approximately.

Records available.--April 1928 to September 1956. Monthly discharge only for some periods, published in WSP 1316.

Gage.--Water-stage recorder. Altitude of gage is 2,600 ft (from topographic map). Prior 

to Nov. 20, 1928, staff gage at site 1 mile downstream at different datum. Nov. 20, 

1928, to Nov. 29, 1933, Oct. 13, 1934, to Sept. 27, 1946, water-stage recorder and 

Dec. 30, 1933, to Oct. 12, 1934, staff gage, at site a quarter of a mile upstream at 

different datum.

Average discharge.--28 years (1928-56), 114 cfs (82,530 acre-ft per year).

Extremes.--Maximum discharge during year, 1,660 cfs May 20 (gage height, 6.19 ft); minimum, 

11 cfs Sept. 15; minimum gage height, 2.72 ft Oct. 3, 4.

1928-56: Maximum discharge, 2,700 cfs Oct. 19, 1947 (gage height, 7.85 ft), from 

rating curve extended above 970 cfs on basis of contracted-opening determination of 

peak flow; minimum, 2 cfs Aug. 25, Sept. 5, 1931.

Remarks.--Records good except those for periods of ice effect, which are fair, and those 

for period of no gage-height record, which are poor. No regulation or diversion.

Revisions (water years). WSP 1396: 1936(M).

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 19-25)

2.7 

2.9 

3.1 

3.3 

3.6

Oct. 1 to May 25

12

24

48

85

173

May 26 to Sept. 3O

4.0 

4.5

5.0 

6.0

335

575

2.8

2.9 

3.1 

3.3 

3.6

12

16

30

59

127

4.0 

4.5 

5.0 

5.3

247

451

715

895

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

Day

1

2

3

4

5

6

7

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.

18

16

16

19

47

28

23

30

282

619

225

137

131

113

113

95

83

73

71

75

63

56

51

66

125

180

128

108

98

119

95

3,303

107

2.02

2.32

6,550

Nov.

*81

75

105

513

37T

225

166

147

134

202

156

119

98

90

80

70

70

80

95

90

77

65

62

60

67

65

56

55

53

51

3,578

119

2.25

2.51

7,100

Dec.

50

47

*45

44

43

43

40

40

39

38

56

280

150

115

90

80

70

65

70

90

110

130

353 23~2~

184

244

265

205

173

155

140

3,686

119

2.25

2.59

7,310

Jan.

130

120

116

125

122

110

108

100

92

88

83

79

77

73

71

69

63

62

60

58

56

55

55

51

45

40

45

45

43

38

30

2,309

74.5

1.41

1.62

4,580

Feb.

30

30

35

38

3_9

39

38

35

33

31

33

35

32

30

27

25

25

26

26

26

27

30

30

29

27

26

26

26

26

880

30.3

0.572

0.62

1,750

Mar.

27

28

28

27

27

24

*24

24

24

22

20

22

22

22

23

23

24

27

32

39

38

44

77

113

137

163

T52

100

92

95

100

1,590

51.3

0.968

1.12

3,150

Apr.

92

83

81

92

*98

88

85

79

88

116

160

177

213

290

384

495

470

500

535

608

733

784

739

691

597

570

580

*565

515

475

10,983

366

6.91

7.71

21,780

May

435

380

340

322

512

353

480

641

727

784

778

608

570

614

733

929

1,130

1,250

1,250

1,550

1,230

1,050

1,020

1,160

943

*847

835

793

*775

763

757

24,139

779

14.7

16.94

47,880

June

751

T6T

600

606

480

378

370

365

400

418

337

276

255

252

302

333

*321

261

244

227

202

189

177

166

149

140

135

130

120

107

9,394

313

5.91

6.59

18,630

July

~95 100

95

90

88

88

77

73

69

65

61

57

56

75

54

47

42

38

36

35

32

29

28

*27

25

24

22

21

20

20

19

1,608

51.9

0.979

1.13

3,190

Aug.

20

21

22

24

20

19

18

18

17

16

17

16

16

15

15

15

15

14

14

14

14

13

13

14

14

18

18

17

*24

20

16

527

17.0

0.321

0.37

1,050

Sept.

15

15

14

14

14

14

14

14

13

13

13

13

13

12

T2

12

12

12

12

12

15

14

13

13

13

13

15

16

18

26

419

14.0

0.255

0.29

831

Calendar year 1955: Max 1,030 Mln 11 Mean 138 Cfsm 2.60 In. 35.46 Ac-ft 100,200

Water year 1955-56: Max 1,330 Mln 12 Mean 171 Cfsm 3.23 In. 43.81 Ac-ft 123,800

Peak discharge (base. 800 efs). Oct. 10 (7:30 a.m.) 845 cfs (4.90 ft); Nov. 4 (5 p.m.) 824 cfs 

(4.91 ft); Apr.21 (10 p.m.) 845 cfs (4.94 ft)} May 10 (7 p.m.) 971 cfs (5.12 ft)j May 20 (6 p.m.) 

1,660 cfs (6.19 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 14-19, Dec. 12-22, Dec. 30 to Jan. 2, Jan. 25 

to about Feb. 29, Mar. 10-13. No gage-height record Feb. 3 to Mar. 6j discharge estimated on basis 

of weather records and records for other Kootenai River tributaries.
KOOTENAI RIVER BASIN 173

Moyle River at Eastport, Idaho 

(International gaging station)

Location.--Lat 49°00', long 116°11', In SE^ sec. 10, T. 65 N., R. 2 E., on left bank at 

Eastport, 1,000 ft downstream from International boundary.

Drainage area.--570 sq ml.

Records available.--August 1929 to September 1956 In reports of Geological Survey. January 1915 to December 1916, and discharge measurements during 1914 and 1917, In reports 

of Water Resources Division, Department of Northern Affairs and National Resources, 

Canada.

Gage.--Water-stage recorder. Datum of gage Is 2,620.06 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947. January 1915 to December 1916 staff gage at 

site 0.2 mile upstream at different datum.

Average discharge. 27 years, 701 cfs (507,500 acre-ft per year).

Extremes.--Maximum discharge during year, 9,310 cfs May 20 (gage height, 10.52 ft); minimum, 62 cfs Sept. 17-20 (gage height, 3.51 ft).

1929-56: Maximum discharge, 9,400 cfs May 20, 1954 (gage height, 10.55 ft); minimum, 23 cfs Nov. 7, 1936 (gage height, 3.20 ft).

Remarks.--Records excellent except those for periods of ice effect, which are fair. No 

regulation or diversion above station.

Cooperation.--This station is one of the international gaging stations maintained by the 

United States under agreement with Canada.

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

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

3.5 

3.7 

4.0 

4.5 

5.0 

5.5

60

108

202

445

770

1,200

6.0 

7.0 

8.0 

9.0 

10.6

1,740 

3,060 

4,610 6,360' 

9,470

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30 

31

Total

Mean

Cf sm

In.

Ac -ft

Oct.

98

93

»9090-

100

98

93

98

154

401

342

*248

227

214

214

214

210

214

222

284

252

239 

227

231

434

830

869

877 84"5

808 

735

10,051

324

0.568

0.66

19,940

Nov.

672

624

*637

1,010

1,460

1,190

1,040

934

877

925

861

721

b640

b590

b530

b490

b460

b420

b430

b440

412

390 

364

369

364

353

348

b330

312

303

18,496

617

1.08

1.21

36,690

Dec.

298

288

279

270

266

261

252

248

243

235

»235

317

b300

b260

b240

b230

b^TO

b250

b270

b400

b580

b590 

535

423

369

379

434

b360

b320

b300 

b270

9,932

320

0.561

0.65

19,700

Jan.

b260

b300

b310

322

327

303

298

293

b270

270

261

256

252

248

239

248

235

227

222

214

210

210 

206

202

b!95

b!85

b!90

b!80

b!70

b!60 

b!55

7,418

239

0.419

0.48

14,710

Feb.

»b!50

blTO

b!80

b200

b200

b200

b200

b200

b210

b230

b250

b230

b200

b!80

b!70

b!55

bJ50

b!55

b!60

b200

b230

b250 

b230

206

188

»173

160

157

157

5,541

191

0.335

0.36

10,990

Mar.

154

154

b!55

160

b!50

b!40

b!45

b!45

b!40

b!30

b!30

b!30

b!35

b!40

141

138

141

147

163

191

198

214 

298

493

679

808

693

610

591

610 

651

8,774

283

0.496

0.57

17,400

Apr.

624

617

»637

728

770

714

693

651

686

893

1,130

1,240

1,460

1,870

2,410

3,080

3,150

3,340

*3,520

3,910

4,530

4,900 

4,230

4,000

3,540

3,360

3,380

3,440

»3,480

3,240

70,223

2,341

4.11

4.58

139,300

May

2,980

2,680

2,400

2,200

2,030

2,060

2,450

3,120

4,000

4,270

4,290

3,740

3,500

3,570

4,160

5,150

6,250

7,070

7,580

8,450

8,870

8,470 

*8,030

8,270

7,760

6,880

6,430

6,020

5,660

5,440

5,240

159,020

5,130

9.00

10.38

315,400

June

*5,200

5,070

4,680

4,550

4,180

3,660

3,220

2,890

2,740

2,790

2,680

2,360

2,280

2,030

»2,110

2,100

1,980

1,880

1,800

1,720

1,590

1,490 

1,400

1,310

1,220

1,140

1,090

1,040

950

885

72,035

2,401

4.21

4.70

142,900

July

838 800"

770

749

707

700

693

630

598

565

535

517

493

523

475

469

434

401

379

353

327

308

288

274

256

*243

231

214

206

195 

184

14,355

463

0.812

0.94

28,470

Aug.

180

180

177

170

163

157

154

147

144

144

147

141

135

130

124

122

119

119

116

113

108

103 

100

98

98

100

103

100

100

98 

93

3,983

128

0.225

0.26

7,900

Sept.

90

86

*83

83

83

81

78

78

76

74

74

72

72

69

67

65

65

62

62

62

69

72 

67

65

67

67

69

72

76

103

2,209

73.6

0.129

0.14

4,380

Calendar year 1955: Max 5,230 Min 56 Mean 793 Cfsm 1.39 In. 18.90 Ac-ft 574,000

Water year 1955-56: Max 8,870 Min 62 Mean 1,044 Cfsm 1.83 In. 24.93 Ac-ft 757,800

Pe_ak discharge (base, 2,900 cfs). Apr. 22 (2 a.m.) 5,170 cfs (8.33 ft)j May 20 (11:30 p.m.) 9,310 

cfs (10.52 ft)7 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
174 KOOTENAI RIVER BASIN

Moyie River at Eileen, Idaho

Location Lat 48°46', long 116° 10', In NE£ sec. 35, T. 63 N. , R. 2 E., on right bank an 

eighth of a mile downstream from Skin Creek, a quarter of a mile southeast of Eileen, 

and 4 miles upstream from mouth.

Drainage area.--755 sq ml.

Records available.--October 1925 to September 1956.

Gage.--Water-stage recorder. Datum of gage Is 2,124.5 ft (river-profile survey). Prior 

Eo June 1, 1928, staff gage and June 1, 1928, to Sept. 30, 1944, water-stage recorder, 

at same site at datum 1.0 ft higher.

Average discharge.--31 years, 863 cfs (624,800 acre-ft per year).

Extremes.--Maximum discharge during year, 10,300 cfs May 21 (gage height, 6.72 ft); minimum, 108 cfs Sept. 19, 20 (gage height, 1.92 ft).

1925-56: Maximum discharge, 11,000 cfs May 20, 1954 (gage height, 6.99 ft); minimum, 40 cfs Nov. 27, 1936; minimum gage height, 0.50 ft Feb. 22, 1944, present datum.

Remarks.--Records good except those for periods of ice effect, which arefalr. No regulation or diversion above station.

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. 21, 22)

Oct. 1 to Apr. 22 Apr. 23 to Sept. 30

2.1 128

2.3 198

2.6 345

3.0 610

3.5 1,070

4.0 1,680

5.0 3,390

6.0 6,350

1.9 

2.2 

2.5 

3.0 

4.0

380

770

1,960

4.5 2,810

5.0 3,970

6.0 7,410

6.7 10,200

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

Day

1 

2

3

4

5

6

7

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.

175

160

157

*154

168

168

157

168 

229

498

519

381

345

323

318

323

318

318

323

393

363

345 

334

351

512

852

960

970

940

900 

825

12,947

418

0.554

0.64

25,680

Nov.

780 

717

753

1,030

*1,630

1,320

1,160

1,070 

1,000

1,050

990

807

735

b690

b660

b620

b600

b570

b590

b620

b560

b530 

498

b500

b500

b470

457

450

438

424

22,219

741

0.981

1.09

44,070

Dec . .

418

405

399

*387

381

375

369

357 

351

345

357

505

b440

b390

b350

b340

b350

b370

b410

575

960

1,010 

910

717

610

658

771

650

b590

b530 

b500

15,780

509

0.674

0.78

31,300

Jan.

b490 

b540

b580

596

603

554

547

540 

505

491

470

457

450

438

424

412

405

393

387

381

375

369 

369

*357

340

b330

b340

b320

b300

b280 

b270

13,313

429

0.568

0.66

26,410

Feb.

1.260 

1.290

b310

b320

l>330

b330

b330

1.320 

b340

b380

405

375

329

302

b270

b250

b240

b250

b270

b320

b370

412 

369

334

302

b280

b275

286

291

------

9,140

315

0.417

0.45

18,130

Mar.

281 

271

281

281

b260

*b245

b260

1.260 

b250

b250

b230

b230

b235

247

262

257

262

271

302

351

375

412 

533

807

1,110

1,400

1,240

1,080

1,030

1,060

1,170

15,483

499

0.661

0.76

30,710

Apr.

1,140 

* 1,080

1,080

1,180

1,260

1,170

1,140

1,050 

1,060

1,310

1,640

1,790

2,060

2,540

3,150

3,800

3,870

4,080

4,410

4,880

5,510

5,980 

5,480

5,170

4,480

4,170

4,140

*4,170

4,170

3,940

90,900

3,030

4.01

4.48

180,300

Hay

3,650 

3,360

3,050

2,850

2,640

2,660

3,010

3,750 

4,770

5,310

5,340

4,600

4,200

4,230

4,830

6,080

7,710

8,830

9,150

9,150

9,860

9,570 

9,200

9,240

8,950

8,260

7,680

7,140

*6,660

6,590

6,440

188,760

6,089

8.06

9.30

374,400

June

6,410 

6,300

5,730

5,620

5,070

4,320

3,730

3,310 

3,160

3,220

*3,160

2,910

2,490

2,360

2,480

2,510

2,370

*2,240

2,140

2,060

1,920

1,810 

1,690

1,620

1,530

1,440

1,370

1,300

1,200

1,120

86,590

2,886

3 . 82

4.27

171,700

July

1,080 

1,040

981

970

920

900

910

840 

790

743

707

672

640

707

648

632

592

544

506

485

457

436 

408

380

362

*344

332

314

304

287 

276

19,207

620

0.821

0.95

38,100

Aug.

270 270"

265

260

250

235

230

220 

215

211

211

206

202

193

189

184

180

175

171

167

163

160 

152

152

152

152

160

163

*167

163 

156

6,044

195

0.258

0.30

11,990

Sept.

148 

T44

141

137

133

130

127

127 

124

121

118

118

114

114

114

111

111

111

108

TIT

124

121 

114

114

114

111

118

118

127

148

3,674

122

0.162

0.18

7,290

Calendar year- 1955: Max 6,240 win 114 Mean 963 Cfsm 1.28' In. 17.31 Ac-ft 697,200

Water year 1955-56: Max 9,860 win 108 Mean 1,323 Cfsm 1.75 In. 23.86 Ac-ft 96O,1OO

Peak discharge (base, 5,500 cfs).--Apr. 22 (4:30 a.m.) 6,320 cfs (5.89 ft); May 11 (3 a.m.) 5,590 

cfs (5.54 ft); May 21 (7 a.m.) 10,300 cfs (6.72 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
KOOTENAI RIVER BASIN 175

Kootenai River at Boom Camp, near Bonners Ferry, Idaho

Location. Lat 48°42'05", long 116° 14'30", in NVi£ sec. 29, T. 62 N., R. 2 E., on left bank 

600 ft east of Boom Camp, 3| miles upstream from Bonners Ferry, and 4 miles downstream 

from Moyle River.

Drainage area. 12,950 sq ml, approximately.

Records available.--October 1927 to September 1956 (gage heights only) In reports of Geological Survey. April 1925 to September 1927 (gage heights only) In reports of Department of Northern Affairs and National Resources, Canada.

Gage. Water-stage recorder. Datum of gage Is 1,700.00 ft above mean sea level, levels by 

Topographic Branch In 1928. Gage readings have been reduced to elevations above mean 

sea level. Datum of 1929, supplementary adjustment of 1947, Is 0.04 ft higher. Prior 

to Aug. 23, 1934, staff gage at same site. Datum of gage was 54.08 ft higher prior to 

Oct. 8, 1934.

Extremes.--Maximum elevation during year, 1,781.38 ft May 24; minimum, 1,757.51 ft Feb. 17.

1927-56: Maximum elevation recorded, that of May 24, 1956; minimum, 1,755.53 ft 

Dec. 9, 1936.

Remarks.--Elevations affected by backwater from Kootenay Lake Apr. 21-28, May 10 to July 10, 

July 15-17. Drainage district No. 7 and three small areas above district No. 4 (district No. 14, Casey, and Spurling tracts) flooded May 21; dikes on drainage district 

No. 1 began falling May 21; small area above district No. 9 (Kerr tract), district 

No. 16, district No. 2 and small areas north of district No. 10 (Vickaryous tract) 

flooded May 23; districts Nos. 4, 5, 10, and 13, flooded May 24; and Klockmann tract 

just south of Boundary Creek flooded June 1. Drainage district No. 15 flooded from 

seepage.

Elevation, in feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

58.47

58.39

58.37

58.32

58.36

58.33

58.31

58.32

58.72

59.90

60.22

59.92

59.56

59.33

59.18

59.13

59.08

59.06

59.07

59.17

59.27

59.32

59.26

59.20

59.40

59.96

61.04

61.88

61.60

61.16

60.83

Nov.

60.54

60.27

60.12

60.53

62.05

61.88

61.32

60.91

60.57

60.62

60.58

60.23

59.84

59.24

59.25

59.81

61.02

62.94

63.65

63.77

63.01

60.99

60.67

60.56

60.18

60.30

60.16

59.86

59.54

59.53

 

Dec.

59.52

59.44

59.34

59.20

59.07

59.01

58.95

58.92

58.87

58.76

58.77

59.60

60.30

59.88

59.58

59.02

58.78

58.62

59.66

60.85

62.22

63.51

65.59

66.95

66.54

66.26

66.33

66.06

65.50

64.85

64.06

Jan.

63.79

63.89

63.99

64.17

64.37

64.33

64.01

63.75

63.37

62.95

62.69

62.48

62.22

61.89

61.51

61.32

60.80

60.19

59.71

59.29

58.95

58.80

58.69

58.52

58.44

58.76

58.67

58.62

58.64

58.38

57.88

Feb.

57.88

57.91

57.96

58.13

57.99

58.19

58.33

58.39

58.32

58.20

58.23

58.23

58.28

58.33

58.18

58.22

57.68

57.80

57.70

57.84

57.87

57.98

58.06

58.07

58.03

57.99

57.96

57.92

57.94

Mar.

57.96

57.97

58.00

57.99

58.16

58.08

57.84

57.87

57.83

57.86

57.98

57.87

57.70

57.65

57.67

57.71

57.69

57.79

57.91

58.03

58.19

58.35

58.71

59.28

60.00

60.81

60.94

60. 60

60.33

60.23

60.38

Apr.

60.37

60.27

60.20

60.23

60.44

60.38

60.26

60.11

60.01

60.21

60.72

61.13

61.51

62.19

63.09

64.14

64.82

65.42

65.62

65.93

66.92

68.16

68.40

67.79

66.75

65.71

65.27

65.08

64.85

64.60

May

64.28

63.96

63.52

63.16

62.93

62.78

62 . 87

63.49

64.93

66.15

66.76

66.55

66.09

65.75

65.80

66.76

69.17

72.35

75.36

78.45

79.52

78.55

80.39

80.97

80.99

80.54

80.29

79.99

79.70

79.48

79.36

June

79.43

79.59

79.85

79.79

79.45

78.97

78.20

76.90

75.05

73.57

73.02

73.11

72.85

71.78

70.75

70.07

69.94

70.43

70.72

70.65

70.44

70.12

69.41

68.60

67.95

67.39

66.64

65.99

65.67

65.61

 

July

65.33

64.77

64.35

64.20

64.30

64.33

64.41

64.45

64.27

64.12

64.22

64.47

64.50

64.65

64.81

64.77

64.40

64.03

63.73

63.47

63.37

63.31

63.26

63.18

62.98

62.76

62.59

62.36

62.06

61.82

61.59

Aug.

61.35

61.22

61.12

61.06

61.03

61.00

60.82

60.65

60.49

60.40

60.37

60.36

60.30

60.19

60.11

60.07

60.05

60.04

60.02

59.96

59.85

59.76

59.69

59.68

59.69

59.73

59.79

59.80

59.79

59.76

59.67

Sept.

59.60

59.46

59.33

59.26

59.19

59.09

59.02

58.94

58.87

58.79

58.74

58.72

58.70

58.63

58.58

58.53

58.57

58.55

58.56

58.55

58.58

58;59

58.60

58.64

58.60

58.55

58.50

58.55

58.59

58.86

Note. Add 1,700 ft to obtain elevation above mean sea level.
176 KOOTENAI RIVER BASIN

Kootenai River at Bonners Ferry, Idaho

Location.--La t 48°42'00", long 116°18'45", in NEl; sec. 27, T. 62 N., R. 1 E., near right 

bank on downstream side of highway bridge at Bonners Ferry.

Drainage area .--13,000 sq mi, approximately.

Records available. May to October 1904, October 1927 to September 1956 (gage heights only 

prior to March 1928) . Gage heights collected in this vicinity since 1904 are contained 

in reports of 0. S. Weather Bureau.

Gage. Wire-weight gage read once daily. Water-stage recorder 800 ft across channel from 

wire-weight gage at same datum used as supplementary gage during high stages since 

May 8, 1942. Datum of gage is 1,743.00 ft above mean sea level with respect to Geological Survey benchmark V-3-1929 at elevation 1,777.08 ft. Gage readings have been reduced 

to elevations above mean sea level. Datum of 1929, supplementary adjustment of 1947, is 

0.02 ft higher. May 1 to Oct. 15, 1904, staff gage on railroad bridge three-quarters of 

a mile downstream at different datum. Oct. 1, 1927, to Nov. 30, 1929, staff gage near 

left bank. Dec. 1, 1929, to June 12, 1933, chain or wire-weight gages on old highway 

bridge 40 ft downstream. Datum of gages Oct. 1, 1927, to Jan. 2, 1931, was about 

0.23 ft lower.

Average discharge.--28 years (1928-56), 14,760 cfs (10,690,000 acre-ft per year).

Extremes. Maximum discharge during year, 127,000 cfs May 22, 23 (affected by dike breakage downstream); maximum elevation, 1,780.09 ft May 24; minimum daily discharge, 3,400 

cfs Feb. 17; minimum elevation observed, 1,744.05 ft Mar. 20.

1927-56: Maximum discharge, 139,000 cfs May 27, 1948 (affected by dike breakage 

downstream); maximum elevation, that of May 24, 1956; minimum daily discharge, 1,300 

cfs Feb. 8, 1936; minimum elevation, 1,741.14 ft Dec. 5, 1929, Dec. 29, 1930, datum 

then in use.

Flood of June 1894 reached a stage of 1,777.2 ft, present datum.

Remarks.--Records excellent except those for period of ice effect, which are good. Backwater from Kootenay Lake usually present at Bonners Ferry. Discharge for periods of 

backwater at Boom Camp from Kootenay Lake, Apr. 21-28, May 10 to July 10, July 15-17, 

computed on basis of fall between gages at Boom Camp and near Bonners Ferry; that for 

remainder of year on basis of stage-discharge relation for station at Boom Camp. Discharge measurements made at station near Bonners Ferry. See Remarks for Kootenai River 

at Boom Camp on preceding page.

Elevation, In feet, water year October '1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

47.05

47.00

46.92

46.83

46.91

46.93

46.87

46.84

47.17

48.28

48.96

48.51

48.05

47.75

47.59

47.58

47.56

47.53

47.54

47.65

47.73

47.84

47.69

47.57

47.81

48.80

50.06

51.50

51.26

50.52

49.90

Nov.

49.42

48.94

48.70

49.23

51.70

51.88

50.99

50.12

49.53

49.55

49.58

48.91

50.11

50.94

50.45

50.21

50.15

50.21

50.24

50.19

50.23

50.52

50.46

50.51

50.37

50.42

50.45

50.39

50.31

50.25

 

Dec.

50.23

50.13

50.03

49.84

49.58

49.39

48.40

48.38

48.38

48.35

48.33

49.25

49.86

48.96

49.05

49.43

49.70

49.73

49.40

49.36

50.34

51.19

52.63

53.08

51.98

51.77

52.07

51.88

51.32

50.89

50.60

Jan.

50.47

50.49

50.75

51.10

51.67

51.71

51.82

51.88

51.75

51.38

51.08

50.79

50.47

50.22

49.96

49.69

49.42

49.22

49.07

49.05

48.63

48.85

48.77

47.96

48.30

48.50

48.86

48.65

48.73

48.11

48.21

Feb.

47.84

47.96

48.04

48.48

48.72

48.58

48.64

48.43

48.40

48.40

48.30

48.10

48.17

47.99

48.04

47.74

47.97

47.82

47.90

48.02

48.25

48.29

48.35

48.35

47.95

47.80

47.75

47.54

47.32

Mar.

47.32

47.17

46.96

46.77

46.70

46.47

46.31

46.09

45.85

45.67

45.14

45.14

45.33

45.14

45.00

44.61

44.28

44.14

44.11

44.05

44.09

44.18

44.62

45.56

46.59

47.77

48.35

47.76

47.16

46.85

47.07

Apr.

47.18

47.00

46.80

46.73

47.12

47.13

46.91

46.61

46.34

46.58

47.40

48.28

49.03

50.30

52.19

54.64

56.63

58.18

59.05

59.79

61.41

63.58

64.61

64.00

62.57

60.92

59.86

59.33

58.93

58.48

 

May

57.85

57.13

56.22

55.38

54.68

54.21

54.22

55.18

57.69

60.34

61.89

61.97

61.36

60.77

60.70

61.98

65.07

69.26

72.97

76.46

77.39

75.78

78.52

79.44

79.66

79.35

79.22

78.99

78.68

78.50

78.33

June

78.39

78.52

78.83

78.83

78.52

77.91

77.16

75.76

73.98

72.41

71.57

71.45

71.28

70.41

69.29

68.48

6S.11

68.33

68.55

68.54

68.35

68.03

67.43

66.53

65.74

65.04

64.21

63.32

62.63

62.23

 

July

61.79

61.62

60.19

59.59

59.33

59.21

59.15

59.11

58.88

58.54

58.40

58.54

58.69

58.90

59.12

59.27

58.92

58.34

57.72

57,13

56.70

56.38

56.12

55.86

55.46

54.94

54.47

53.92

53.28

52.63

52.01

Aug.

51.43

50.96

50.57

50.33

50.16

50.01

49.68

49.21

48.84

48.61

48.45

48.36

48.26

48.05

47.88

47.80

47.77

47.77

47.77

47.67

47.50

47.32

47.19

47.19

47.16

47.17

47.24

47.31

47.25

47.32

47.14

Sept.

47.01

47.01

46.97

46.95

46.89

46.85

46.89

46.88

46.86

46.85

46.86

46.90

46.91

46.88

46.91

46.86

46.93

46.93

47.02

46.95

47.05

47.02

47.04

47.10

47.01

47.04

47.15

47.01

47.00

47.31

Note. Add 1,700 ft to obtain elevation above mean sea level.
KOOTENAI RIVER BASIN 177

Kootenai River at Bonners Ferry, Idaho Continued

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

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27 

28

29

30 

31

Total

Mean

Cf sm

In.

Ac-ft

Oct.

6,170 

5,960

5,910

5,780

*5,890

5,810

»5.760

5,780

6,850

10, 500

11,700

10, 600

9,330

8,600

8,140

7,990

7,850

7,790

7,820

8,110

8,410

8,570

8,380

8,200 

8,820

10,700

14,800 

18.800

17,400

15,300 

14,000

285,720

9,217

0.709

0.82

566,700

Nov.

12, 800

*11,800

11,300

12,800

19,700

18,800

16, 100

14,300

13,000

13,100

13,000

11,700

10,300

8,320

7,800

6.200

6, 600

6,500

7,000

7,500

7,500

7,500

7,700

7,900 

8,000

7,800

7,600 

7,300

7,100

7 , 200

304, 220

10,140

0.780

0.87

603,400

Dec.

7,300 

7,200

7,000

6,800

6,400

*6, 400

6,300

6,200

6,200

6,100

6,100

8,100

7,600

5,400

5,100

4,800

4,500

4,800

5,000

5,500

7,000

9,400

11,500

12.500 

11,366

11, 100

10, 800 

10,200

9,700 

9 200

8^300

234,000

7,548

0.581

0.67

464, 100

Jan.

7,600 

7,300

7,400

7,800

9,000

8,800

8,600

8,600

8,300

7,800

7,500

7,450

7,300

7,200

7,000

6,900

6,600

6,300

6,300

6,300

6,300

6,300

6,300

6,200 

6,000

5,700

5,050 

4,900

4,900

4,850 

4.650

211,200

6,813

0.524

0.60

418,900

Feb.

4,300 

3,800

3,700

4,000

4,300

*4,700

4,800

4,800

4,900

5,350

5,500

5,500

5,000

4,600

4,300

3,800

5,400

3,600

3,900

4,400

4,650

4,900

5,000

4,950 

4,850

4,800

4,700 

4,550

4,500

131,550

4,536

0.349

0.38

260,900

Mar.

4,500 

4,600

4,650

4,700

*4,600

4,400

4,400

4,400

4,400

4,400

4.200

4,266

4,200

4,200

4,330

4,420

4,380

4,600

4,870

5,160

5,570

5,990

6,960

8,600 

11,000

14,100

14.600 

13,300

12,200

11,900 

12,400

206,230

6,653

0.512

0.59

409,100

Apr.

12,400 

*12,000

11,800

11,900

12,700

12,400

12,000

11,400

11,100

11,800

13,700

15,400

17,200

20,600

25,500

31,700

35,900

39,600

40,900

43,000

48,700

54,100

53 , 500

49 , 900 

44, 800

39 , 900

*38,100 

37 , 500

36,100 

34 500

840,100

28,000

2.15

2.40

tl,666

May

32,600 

30,700

28,000

26,000

24, 600

25.800

24,200

27,800

36,600

44,600

46,300

44, 500

42,000

40, 800

41, 300

46,400

60,000

77,300

90, 800

108,000

*L2 1,000

125,000

125,000

*125,000 

119,000

111,000

108, 000 

102,000

99,900

98, 200 

97,600

*2, 128

68,650

5.28

6.09

*4,221

June

98,900 

101,000

103, 000

100, 000

97,900

95,000

87,800

79,500

66,600

61, 100

*6 1,600

65,200

61,900

54,400

49,800

49,800

51,300

*56,900

59,000

57,900

56, 500

54, 800

49,700

45,600 

43,300

41,300

37,800 

35,600

55,000

35, 800

tl,894

63,130

4.86

5.42

*3,757

July

34,400 

32,000

30,300

30, 200

31,400

31, 800

32, 400

32,700

31,600

31,000

31,600

33,100

33,200

34, 000

54.900

34,300

32,100

30,200

28,400

26,900

26,300

26,000

*25,700

25,200 

24,000

22,800

22,000 

20, 800

19,300

18,100 

17.000

883,700

28,510

2.19

2.53

tl,753

Aug.

15,800 

15,300

14,800

14,600

14,500

14,400

13,700

13,000

12,400

12,000

12,000

11,900

11,700

11,300

11,000

10,900

10,900

10,800

10,800

10, 500

10,200

9,880

9,640

9,610 

9,640

9,810

10,000 

10,000

10,000

*9,910 

9,610

360,600

11,630

0.895

1.03

715,200

Sept.

9,570 

8,920

8,500

8,290

8,080

7,790

7,590

7,370

7,170

6,960

6,820

6,740

6,690

6,500

6,360

6,230

6,340

6,280

6,310

6,280

6,360

6,390

6,420

6,500 

6,390

6,260

6.120 

6,260

6,360 

7,090

208,740

6,958

0.535

0.60

414,000

Calendar year 1955: Max 85,600 Min 2,400 Mean 15,910 Cfsm 1.22 In. 16.62 Ac-ft 11,520,000

Water year 1955-56: Max 125,000 Min 3,400 Mean 21,010 Cfsm 1.62 In. 22.00 Ae-ft 15,250,000

* Discharge measurement made on this day.

* Expressed In thousands.

Note. Stage-discharge relation affected by ice Nov. 15 to Mar. 14.
178 KOOTENAI RIVER BASIN

Kootenai River near Bonners Ferry, Idaho

Location. Lat 48°41'55", long 116°20'40", In NWir sec. 28, T. 62 N. , R. IE., on left bank 

1.6 miles dovnnstream from highway bridge at Bonners Perry.

Drainage area. 13,000 sq mi, approximately.

Records available.--May 1928 to September 1956 (gage heights only, fragmentary prior to 

May 1929).

Gage.--Water-stage recorder. Datum of gage is 1,700.00 ft above mean sea level, levels by 

Topographic Branch in 1928. Gage readings have been reduced to elevations above mean 

sea level. Datum of 1929, supplementary adjustment of 1947, is 0.02 ft higher at 

Bonners Perry. May 17 to July 20, 1928, water-stage recorder at same site at datum 

43.42 ft higher. July 21 to Oct. 22, 1928, and for elevations below 1,742 ft prior to 

Jan. 2, 1931, staff gage at same site and datum.

Extremes.--Maximum elevation during year, 1,778.94 ft May 24, from graph based on gage 

readings; minimum, 1,743.61 ft Mar. 21.

1928-56: Maximum elevation, that of May 24, 1956; minimum, 1,740.16 ft War. 29, 1944.

Remarks.--Elevations affected by backwater from Kootenay Lake and by dike breakages (see 

Remarks for station at Boom Camp p.175).

Elevation, in feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

46.98

46.91

46.90

46.73

46.85

46.83

46.78

46.68

47.05

48.10

48.74

48.32

47.96

47.71

47.54

47.50

47.44

47.41

47.43

47.55

47.60

47,69

47.57

47.44

47.61

43.55

49.67

51.05

50.98

50.24

49.64

Nov.

49.18

48.72

48.46

48.95

51.27

51.55

50.74

49.88

49.27

49.23

49.30

48.73

48.18

47.81

47.25

46.94

46.73

46.94

47.31

47.58

48.18

48.25

47.91

47.90

47.93

48.24

48.11

47.88

47.70

47.62

_______

Dec.

47.67

47.66

47.61

47.50

47.34

47.28

47.23

47.18

47.18

47.13

47.18

47.90

48.23

47.43

47.06

46.93

46.87

46.54

46.43

46.48

47.08

48.02

49.46

50.47

49.95

49.59

50.01

49.97

49.45

48.84

48.23

Jan.

47.98

47.96

48.08

48.27

f48.75

48.94

48.88

48.94

48.86

48.69

48.57

48.50

48.42

48.34

48.21

48.08

47.90

47.75

47.68

47.62

47.55

47.47

47.39

47.19

46.95

46.50

46.44

46.23

46.09

45.92

45.67

Feb.

45.44

45.31

45.32

45.43

45.65

46.06

46.13

46.16

46.21

46.23

46.26

46.26

46.20

45.97

45.80

45.53

45.27

45.08

45.21

45.45

45.64

45.84

45.99

49.95

45.82

45.72

45.62

45.54

45.53

Mar.

45.53

45.53

45.53

45.49

45.31

45.11

44.94

44.88

44.84

44.72

44.48

44.33

44.36

44.31

44.21

44.08

43.90

43.74

43.67

43.63

43.62

43.85

f44.15

f44.81

f45.76

47.06

47.73

47.14

46.52

46.18

46.35

Apr.

46.47

46.31

46. 11

f46.11

f46.52

f46.45

f46.20

f45.88

f45.70

f45.88

f46.63

f47.57

f48.38

49.62

f51.54

f53.93

f55.95

f57.49

f58.44

f 59 . 16

f60.66

f62.90

f63.93

f63.28

f61.80

f60.36

59.36

58.82

58.47

58.04

May

57.45

56.73

55.84

54.98

54.32

53.87

53.85

54. 7S

57.06

59.74

61.29

61.40

60.80

60.24

60.19

61.40

64.44

68.42

72.06

75.56

76.36

74.55

f77.48

f78.40

f78.65

f78.50

f78.38

78.24

77.95

77.75

77.63

June

77.66

77.78

78.02

78.06

77.72

77.24

76.54

f75.24

f73.48

f71.93

f71.18

71.03

70.88

70.02

69.00

68.16

67.73

67.92

68.12

68.11

67.90

67.58

67.01

66.19

65.39

64.72

63.92

63.03

62.35

61.91

July

61.51

60.78

59.98

59.34

59.04

58.86

58.79

58.75

58.55

58.20

58.03

58.14

58.27

58.47

58.67

58.84

58.59

58.05

57.43

56.82

56.39

56.05

55.80

55.56

55.14

54.66

54.19

53.65

53.03

52.38

51.77

Aug.

51.20

50.72

50.34

50.10

49.92

49.76

49.44

48.99

48.60

48.35

48.20

48.10

47.99

47.82

47.65

47.56

47.55

47.53

47.49

4-7.41

47.26

47.08

46.98

46.94

46.92

46.94

46.98

47.02

47.00

47.08

46^29

Sept.

46.80

46.78

46.77

46.75

46.73

46.70

46.73

46.71

46.70

46.69

46.74

46.80

46.81

46.81

46.80

46.78

46.83

46.87

46.92

46.89

46.99

46.97

46.98

47.02

46.95

46.94

47.08

46.95

46.96

47.17

f Gage height partly or wholly estimated on basis of recorder graphs for stations upstream and 

downstream.

Note. Add 1,700 ft to obtain elevation above mean sea level.
KOOTENAI RIVER BASIN 179

Deep Creek at Moravia, Idaho

Location.--Lat 48°38 I , long 116°24i, in sec. 18, T. 61 N., R. IE., on downstream side of 

right abutment of highway bridge, 1 mile downstream from Ruby Creek and 1 mile southwest of Moravia.

Drainage area. 133 sq mi.

Records available.--May 1928 to September 1956. Monthly discharge only for some periods, 

published in WSP 1316.

Gage. Staff gage read once daily. Altitude of gage is 1,800 ft (from topographic map). 

Prior to Aug. 2, 1949, at datum 2.00 ft higher.

Average discharge. 28 years (1928-56), 141 cfs (102,100 acre-ft per year).

Extremes.--Maximum discharge observed during year, 1,180 cfs Apr. 22; maximum gage height, 

 7.10 ft May 20; minimum discharge observed, 16 cfs Aug. 20-25, Sept. 12-17.

1928-56: Maximum discharge, 1,670 cfs May 18, 1954 (gage height, 7.40 ft, from 

graph based on gage readings); minimum observed, 5 cfs Aug. 14, 22, 1940.

Remarks.--Records fair except those for periods of ice effect or doubtful gage-height recorcTT which are poor. Small diversions above station for irrigation. Occasional regulation above station at migratory waterfowl refuge near Elmira.

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

Day

1

2

3

4

5

6

7

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

In.

Ac-ft

Oct.

34

27

25

34

70

47

34

36

70

224

121

96

81

75

65

59

59

59

62

62

59

59

59

59

106

136

96

88

96

96 

96

2,290

73.9

0.556

0.64

4,540

Nov.

77

+77

134

239

204

164

140

127

118

145

136

118

98

90

85

80

90

95

120

160

136

123

118

118

190

164

d!30

dllO

dlOO

d95

3,781

126

0.947

1.06

7,500

Dec.

d88

d84

d80

79

d74

d70

d68

*67

d66

d64

162

236

174

140

120

110

100

95

110

140

200

d900

d750

496

d440

d480

502

460

410

350

7,495

242

1.82

2.10

14,870

Jan.

330

310

304

304

567

312

296

272

249

239

224

213

204

204

190

190

180

167

160

154

152

147

140

135

125

115

130

130

130

120 

110

6,303

203

1.53

1.76

12,500

Feb.

*105

110

115

120

120

120

120

115

110

105

110

115

105

100

90

92

94

96

98

105

120

130

130

120

115

110

100

98

98

3,166

109

0.820

0.89

6,280

Mar.

97

97

96

96

100

*100

88

100

74

84

81

81

74

74

JO

7O

88

92

100

125

143

172

255

354

430

502

395

340

320

336 

362

5,401

174

1.31

1.51

10,710

Apr.

435

395

415

460

*440

380

354

320

42O

470

540

600

624

770

867

1,100

1,080

825

902

923

1,020

1.180

1,160

1,090

1,000

930

888

846

*797

732

21,963

732

5.50

6.14

43,560

May

718

666

606

606

594

570

692

811

895

909

881

797

744

718

712

790

888

975

1,050

1.160

945

804

818

960

*712

648

612

600

558

546 

518

23,503

758

5.70

6.57

46,620

June

518

*502

44O

420

385

344

304

272

265

239

239

210

199

188

*279

293

227

204

188

177

152

143

134

118

108

104

96

88

86

JLL

7,003

233

1.75

1.96

13,890

July

81

77

'81 88

81

77

77

54

62

59

57

54

62

72

62

57

54

47

43

41

41

38

35

33

32

30

27

26" 26

26 

*26

1,626

52.5

0.395

0.45

3,230

Aug.

26

27

30

28

28

28

27

26

23

22

20

20

20

20

19

19

19

19

18

IS.

16

16

16

16

16

18

23

28

28

30 

28

690

22.3

0.168

0.19

1,370

Sept.

27

26

23

23

22

20

*19

20

19

18

18

IS

16

16

16

16

16

48

19

23

26

22

22

22

22

25

23

28

34

659

22.0

0.165

0.18

1,310

Calendar year 1955 : Max 900 Mln 14 Mean 160 Cfsro 1.20 In. 16.37 Ac-ft 116,200

Water year 1955-56 : Max 1,180 Mln 16 Mean 229 Cfsra 1.72 In. 23.45 Ac-ft 166,400

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge estimated on basis of weather records and records for 

nearby streams.

Note. Stage-discharge relation affected by Ice Nov. 14-20, Dec. 14-21, Dec. 28 to Jan. 2, 

Jan. 23 to Mar. 2.
180 KOOTENAI RIVER BASIN

Kootenai River at Klockmann Ranch, near Bonners Ferry, Idaho

Location. Lat 48°47'40", long 116°22'50", in SEy sec. 19, T. 63 N., R. 1 E., on right 

bank 0.3 mile downstream from dike of drainage district No. 5 and 8 miles north of 

Bonners Ferry.

Drainage area.--13.300 sq mi, approximately.

Records available.--May to July, September to November 1928, April to September, December 

1929 (fragmentary), April 1930 to September 1956 (gage heights only).

Gage. Water-stage recorder. Datum of gage is 1,700.00 ft above mean sea level, levels by 

Topographic Branch in 1928. Gage readings have been reduced to elevations above mean 

sea level. Datum of 1929, supplementary adjustment of 1947, is about 0.03 ft higher.

Extremes. Maximum elevation during year, 1,775.89 ft May 24; minimum, 1,742.43 ft Mar. 16. 

T528-56: Maximum elevation, that of May 24, 1956; minimum, 1,738.76 ft Apr. 1, 1944.

Remarks.--Elevations affected by backwater from Kootenay Lake and by dike breakages (see 

Remarks for station at Boom Camp, p. 175).

Elevation, In feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

46.59

46.56

46.54

46.43

46.50

46.48

46.44

46.36

46.62

47.41

47.93

47.57

47.31

47.10

46.99

46.96

46.92

46.91

46.94

47.01

47.07

47.12

47.01

46.92

47.08

47.86

48.69

49.79

49.78

49.15

48.61

Nov.

48.23

47.86

47.70

48.04

49.83

50.14

49.58

48.86

48.33

48.28

48.31

47.84

47.20

46.91

46.58

46.44

46.32

46.47

46.75

46.96

47.38

47.46

47.19

47.18

47.19

47.41

47.33

47.14

47.02

46.95

Dec.

46.98

46.98

46.92

46.84

46.71

46.68

46.65

46.60

46.61

46.59

46.61

47.07

47.43

46.87

46.54

46.47

46.43

46.21

46.15

46.18

46.55

47.23

48.29

49.05

48.66

48.34

48.62

48.64

48.22

47.73

47.24

Jan.

46.99

46.94

47.01

47.21

47.50

47.60

47.50

47.50

47.33

47.12

46.96

46.88

46.81

46.73

46.62

46.52

46.43

46.29

46.24

46.20

46.15

46.11

46.08

46.01

45.90

45.61

45.54

45.40

45.26

45.16

44.98

Feb.

44.84

44.74

44.69

44.66

44.78

44.86

44.89

44.85

44.83

44.80

44.78

44.77

44.72

44.57

44.46

44.16

44,00

43.87

43.89

43.94

44.02

44.10

44.14

44.06

43.94

43.89

43.82

43.71

43.71

Mar.

43.70

43.69

43.65

43.61

43.47

43.32

43.16

43.11

43.03

42.90

42.68

42.57

42.61

42.49

42.46

42.46

42.46

42.47

42.56

42.65

42.78

42.86

43.11

43.71

44.62

45.54

46.14

45.64

45.06

44.78

44.96

Apr.

45.02

44.85

44.67

44.62

44.96

44.92

44.72

44.45

44.24

44.39

45.10

45.86

46.59

47.72

49.51

51.91

53.92

55.39

56.32

57.05

58.55

60.65

61.69

61.37

60.06

58.59

57.55

57.07

56.74

56.34

May

55.78

55.12

54.32

53.54

52.88

52.44

52.35

53.08

55.10

57.70

59.28

59.49

58.96

58.40

58.31

59.45

62.41

66.09

69.37

72.55

73.48

71.98

74.26

75.20

75.43

75.58

75.69

75.68

75.47

75.28

75.18

June

75.18

75.24

75.48

75.58

75.32

74.92

74.38

73.39

71.97

70.54

69.64

69.35

69.17

68.47

67.51

66.71

66.20

66.21

66.36

66.38

66.20

65.91

65.44

64.70

63.94

63.25

62.51

61.71

61.02

60. 54

July

60.11

59.42

58.65

58.02

57.69

57.49

57.35

57.29

57.08

56.75

56.59

56.64

56.77

56.95

57.12

57.26

57.03

56.53

55.97

55.41

54.99

54.69

54.43

54.18

53.81

53.36

52.91

52.40

51.83

51.22

50.64

Aug.

50.09

49.62

49.24

48.96

48.77

48.62

48.32

47.91

47.55

47.31

47.14

47.02

46.92

46.78

46.65

46.58

46.55

46.53

46.51

46.44

46.32

46.18

46.09

46.07

46.06

46.07

46.09

46.12

46.11

46.19

46.05

Sept.

45.98

46.04

46.08

46.11

46.11

46.13

46.18

46.21

46.22

46.23

46.30

46.37

46.40

46.40

46.42

46.40

46.44

46.48

46.54

46.52

46.60

46.57

46.59

46.62

46.55

46.57

46.68

46.57

46.56

46.72

 

Note. Add 1,700 ft to obtain elevation above mean sea level.
KOOTENAI RIVER BASIN 181

Kootenai River near Copeland, Idaho 

(International gaging station)

Location. Lat 48°54'45", long 116°25'00", in NW£NW£sw£ sec. 12, T. 64 N., R. 1 ¥. , on 

right bank at Andrews Ranch, three-quarters of a mile downstream from Mission Creek and 

1-| miles northwest of Copeland.

Drainage area. 13,400 sq mi, approximately.

Records available. October 1927 to September 1956 (gage-height record only prior to

May 1929) in reports of Geological Survey. April 1925 to September 1927 (gage heights 

only) in reports of Department of Northern Affairs and National Resources, Canada.

Sage. Water-stage recorder. Datum of gage is 1,700.00 ft above mean sea level, referred 

to benchmark T-10-1914, elevation, 1,791.49 ft (datum of 1929, supplementary adjustment 

of 1947, is about 0.04 ft higher). Sage readings have been reduced to elevations above

mean sea level. Prior to Nov. 20, 

of a mile upstream at same datum.

1929, staff or recording gage at site three-quarters

Average discharge. 27 years, 15,380 cfs (11,130,000 acre-ft per year).

Extremes.--Maximum daily discharge during year, 112,000 cfs May 26; maximum elevation, 

1,771.78 ft May 28; minimum daily discharge, 3,750 cfs Feb. 17; minimum elevation, 

1,741.71 ft Mar. 18.

1929-56: Maximum daily discharge, 124,000 cfs May 30, 1948; maximum elevation, that 

of May 28, 1956; minimum daily discharge, 1,350 cfs Feb. 8, 1936; minimum elevation, 

1,738.52 ft Apr. 2, 3, 1944.

Remarks. Records excellent except those for periods of ice effect or dike breakages, which 

are good. Discharge and elevations affected by flooding of drainage districts (see 

Remarks for station at Boom Camp, p. 175). Stage-discharge relation affected by backwater from Kootenay Lake. Discharge computed from fall-mean stage-discharge relations 

determined on basis of fall in reach between stations at Klockmann Ranch and at Porthill 

and discharge measurements made at station near Copeland.

Cooperation. This station is maintained By the United States under agreement with Canada.

Elevation, in feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

46.36

46.34

46.32

46.25

46.29

46.26

46.23

46.18

46.36

46.76

47.15

46.91

46.77

46.65

46.58

46.58

46.55

46.54

46.55

46.62

46.63

46.67

46.58

46.49

46.64

47.27

47.72

48.34

48.36

47.94

47.53

Nov.

47.27

47.02

46.94

47.19

48.43

48.71

48.28

47.74

47.35

47. 3Z

47.31

46.98

46.56

46.27

46.14

46.12

46.08

46.18

46.38

46.53

46.77

46.82

46.64

46.62

46.63

46.77

46.70

46.59

46.52

46.46

Dec.

46.49

46.47

46.43

46.36

46.26

46. Z5

46.23

46.20

46.22

46.20

46.22

46.51

46.72

46.39

46.19

46.15

46.14

46.01

45.98

46.00

46.20

46.56

47.13

47.65

47.50

47.28

47.45

47.51

47.26

46.97

46.67

Jan.

46.50

46.42

46.42

46.51

46.68

46.73

46.66

46.66

46.53

46.37

46.26

46.20

46.15

46.09

46.00

45.92

45.87

45.76

45.70

45.66

45.61

45.56

45.52

45.46

45.40

45.21

45.15

45.06

44.97

44.90

44.75

Feb.

44.63

44.50

44.47

44.49

44.53

44.54

44.55

44.51

44.44

44.38

44.35

44.32

44.29

44.15

44.09

43.89

43.78

43.67

43.65

43.64

43.67

43.67

43.65

43.54

43.44

43.39

43.29

43.18

43.16

Mar.

43.13

43.11

43.04

42.95

42.84

42.72

42.55

42.48

42.41

42.27

42.13

42.01

41.99

41.89

41.82

41.78

41.75

41.72

41.72

41.78

41.87

41.94

42.20

42.69

43.20

43.76

44.19

43.81

43.39

43.17

43.28

Apr.

43.33

43.21

43.06

43.01

43.24

43.24

43.06

42.88

42.74

42.80

43.21

43.86

44.40

45.30

46.71

48.72

50.54

51.87

52.83

53.53

54.87

56.74

57.89

57.80

56.85

55.63

54.79

54.34

54.09

53.78

May

53.33

52.82

52.19

51.49

50.94

50.54

50.43

50.88

52.37

54.51

55.90

56.24

55.89

55.46

55.40

56.30

58.67

61.91

64.91

67.87

69.32

68.24

69.70

70.83

70.21

71.05

71.58

71.74

71.63

71.50

71.41

June

71.35

71.40

71.60

71.73

71.58

71.29

70.90

70.15

69.12

67.91

67.03

66.57

66.33

65.77

65.02

64.30

63.70

63.51

63.56

63.55

63.40

63.14

62.76

62.17

61.51

60.89

60.26

59.52

58.90

58.38

July

57.95

57.52

56.70

56.07

55.71

55.46

55.25

55.12

54.93

54.64

54.45

54.45

54.53

54.67

54.79

54.90

54.73

54.33

53.90

53.43

53.08

52.80

52.58

52.33

52.03

51.65

51.24

50.81

50.33

49.80

49.30

Aug.

48.79

48.35

47.97

47.71

47.51

47.33

47.07

46.71

46.41

46.20

46.05

45.93

45.84

45.75

45.66

45.62

45.50

45.59

45.56

45.52

45.44

45.35

45.30

45.29

45.27

45.26

45.26

45.29

45.29

45.37

45.23

Sept.

45.18

45.32

45.43

45.51

45.57

45.65

45.74

45.80

45.85

45.88

45.97

46.06

46.10

46.13

46.16

46.16

46.19

46.23

46.29

46.28

46.35

46.31

46.32

46.34

46.29

46.30

46.44

46.33

46.31

46.40

Note. Add 1,700 ft to obtain elevation above mean sea level.
182 KOOTENAI RIVER BASIN

Kootenai River near Copeland, Idaho Continued

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

Day

1

2

3

4

5

6 

7

8

9

10

11 

12

13

14

15

16

17 

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

6,380

6,230

6,150

5,950

6,120

6,120 

6,090

5.860

6,750

*10,100

12,000 

10,800

9,550

8,710

8,280

8,040

7,860 

7,820

7,960

8,080

8,400

8,660

8,560

8,430 

8,7OO

10,200

13,900

18 . 300

18,300

16,200

14,600

289,100

9,326

0.696

0.80

573,400

Nov.

13,400

12,300

*11,600

12,400

18,400

19 . 100 

17,400

15,300

13,700

13,300

13,600 

12,300

10, 000

9,490

7,830

fi,790

6.020 

6,540

7,000

7,600

7,400

7,600

8,100

8,100 

8,300

,900

,9OO

,600

* ,400

,400

311,770

10,390

0.775

0.87

618,400

Dec.

7,400

7,300

7,200

7,000

6,600

6,500 

*6,400

6,300

6,200

6,200

6,300 

8,000

7,600

6,100

5,500

5,000

4.600 

5,100

5,100

5,600

6,900

9,500

11,800

12.500 

12,500

12,200

11,400

11,000

10,800

10,300

9,300

244,200

7,877

0.588

0.68

484,400

Jan.

8,350

7,900

7,900

8,200

9.300

9,200 

9,200

9,000

8,800

8,400

8,000 

7,900

7,700

7,600

7,400

7,300

7,000 

6,700

6,700

6,600

6,600

6,600

6,600

6,600 

6,400

6,200

5,400

5,300

5,200

5,200

5.000

224,250

7,234

0.540

0.62

444,800

Feb.

4,700

4,100

3,900

*4,100

4,400

4,700 

5,000

5,000

5,100

5,600

5.700 

5,700

5,250

4,900

4,600

4,200

3.750 

3,900

4,050

4,500

4,800

5,050

5,250

5,300 

5,300

5,250

5,100

5,000

4,8OO

-_-__-

139,000

4,793

0.358

0.39

275,700

Mar.

4,800

4,900

5,000

*5,100

5,100

,900 

,900

,700

,650

,700

.500 

,500

,500

,500

,600

,700

,700 

,900

5,100

5,400

5,900

6,200

7,300

8,900 

11 , 300

14 , 400

15.000

14,600

13,600

13,000

13,400

219,750

7,089

0.529

0.61

435, 900

Apr.

13,600

13,200

*12,900

12,800

13, 700

13,500 

13,100

12,400

12.000

12,400

14 , 300 

15,900

17 , 500

20, 100

24,600

31,000

36,500 

*40, 600

42,900

44,800

48,900

55,200

58, OOP

S3, 800 

50,200

44,700

*41,100

39,400

38,300

36,800

886,200

29,540

2.20

2.46

*1,758

May

34,900

32 , 600

30,100

27,900

26,000

24. 900 

25,000

27,700

34, 900

43,600

48,4OO 

48,400

46,000

43,900

43,500

47,200

58,100 

7O,9OO

84, 400

97,800

e98,4OO

*e88, 500

e!0£,000

6106,000 

ellO,000

e!12.000

6110,000

ifeL10-,000

si 07, 000

el06,000

e!05,000

*2,051. 1

66,160

4.94

5.S9

*4,068

June

3105,000

103,OOO

104, 000

104, 000

102,000

*99,900 

97, 600

91,400

82,200

73,200

67,800 

68,000

68,100

64,600

60, OOO

56,800

55, 700 

*57,300

58, 900

59,400

58,800

57, 900

56,200

53,000 

50, 200

48,100

45, 400

42,700

40,600

39 . 900

*2,07L7

69,060

5.15

5.75

*4,109

July

39.500

37,500

35,400

33,900

33,600

33,500 

33,700

34,100

33,700

32,800

32,700 

33,200

33,800

34,400

35,200

35,600

34,800 

33,100

30, 700

29,400

28,300

27,500

26, 900

26,400 

*25,400

24,200

23,300

21,900

20,500

19,200

17.900

942,100

30,390

2.27

2.61

tl,869

Aug.

16.900

16,100

15,600

15, 100

15,000

15,000 

14, 500

13,700

12,900

12,500

12,400 

12,200

12,000

11,600

11,300

11,100

11,000 

11,000

11,000

10, 800

10,500

10,100

9,850

9.740 

9,740

9,880

10, 100

10, 100

10, 100

10, 100

*9,810

371,720

11,990

0.895

1.03

737,300

Sept.

9,450

9,120

8,760

8,550

8,240

7,840 

7,630

7,480

7,150

7,010

6,830 

6,710

6,660

6,410

6,350

6.200

6,310 

6,250

6,360

6,250

6,370

6,440

6,470

6,590 

6,440

6,320

6,360

6,320

6,390

7,040

210,300

7,010

0.523

0.58

417, 100

Calendar year 1955: Max 86,50O Mln 2.6OO Mean 16,440 Cfsm 1.23 In. 16.67 Ac-ft 11,910,000 

Water year 1955-56: Max 112,OOO Mln 3,750 Mean 21,750 Cfsm 1.62 In. 22.19 Ac-ft 15,790,OOO

* Discharge measurement made on this day.

* Expressed In thousands.

e Mean stage-fall-dlscharge relation affected by dike breakage

Note. Stage-fall-discharge relation affected by Ice Nov. 19 t;o Mar. 28.
KOOTENAI RIVER BASIN 183

Long Canyon Creek near Porthill, Idaho

Location. Lat 48°57', long 116°32', in NWi sec. 36, T. 65 N., R. 2 W., on left bank 200 ft 

below U. S. Forest Service bridge at mouth of canyon and 4 miles southwest of Porthill.

Drainage area.--29 sq mi, approximately.

Records available.--May 1928 to September 1956 (no winter records prior to 1931). Monthly 

discharge only for some periods, published In WSP 1316.

Gage. Water-stage recorder. Altitude of gage is 1,830 ft (by barometer). Prior to

Mar. 20, 1930, staff gages and Mar. 20, 1930, to Nov. 16, 1948, water-stage recorders, 

at several nearby sites and at various daturas. July 25, 1951, to June 12, 1955, waterstage recorder at site 200 ft upstream at datum 9.79 ft higher.

Average discharge.--26 years (1930-56), 63.2 cfs (45,750 acre-ft per year).

Extremes. Maximum daily discharge during year, 900 cfs May 24: minimum daily, 5.5 cfs 

Sept. 18-20.

1928-56: Maximum discharge, 1,300 cfs May 27, 1948 (gage height, 6.75 ft, site and 

datum then in use), by slope-area determination of peak flow; maximum gage height, 

8.55 ft June 14, 15, 1933 (datum used Sept. 4, 1941, to Aug. 23, 1948), backwater from 

drift; minimum discharge, 1 cfs Nov. 29, 30, 1952, and possibly other days during 

period of no gage-height record in that year.

Remarks.--Records poor. No regulation or diversion above station. 

Revisions (water years) . WSP 1316: 1939. WSP 1396: 1942.

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

Day

1

2

3

4

5

6

7

8

9

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.

*11

8.6

8.0

875

24

17

15

20

47

84

*44

35

33

32

34

35

33

30

44

54

36

33

30

45

108

172

105

85

80

75

70

1,456.4

47.0

1.62

1.87

2,890

Nov.

65

60

65

*170

145

126

110

100

95

114

99

69

50

54

45

40

45

50

50

45

40

37

35

36

36

35

31

31

30

29_

1,937

64.6

2.23

2.48

3,840

Dec.

28

27

26

25

25

24

23

22

22

21

25

*45

30

25

22

22

22

23

25

27

30

35

31

29

28

28

30

27

24

22

21

814

26.3

0.907

1.04

1,610

Jan.

22

24

26

24

22

22

23

22

20

19

18

19

18

18

17

17

17

17

16

16

16

16

16

15

15

12

14

13

12

12

*11

549

17.7

0.610

0.70

1,090

Feb.

10

10

11

11

12

12

12

12

12

12

12

12

11

11

10

775" 9.0

9.0

9.5

9.5

10

10

10

10

10

9.5

9.5

9.0

9.0

303.5

10.5

0.362

0.39

602

Mar.

*8.4

8.4

8.4

8.4

8.2

8.0

8.0

8.0

8.0

7.8

7.8

7.6

778

7.8

7.8

7.8

8.2

8.6

9.0

10

11

12

15

20

24

28

53

21

21

23

25

387.0

12.5

0,431

0.50

768

Apr.

25

23

23

*25

25

23

23

23

23

26

28

32

36

48

60

80

85

90

100

120

170

200

'2750

180

160

140

140

150

150

*131

2,539

84.6

2.92

3.26

5,040

May

120

110

100

90

80

80

100

130

160

190

220

170

140

160

200

300

400

500

700

850

800

700

650

900

700

550

600

500

550

600

650

12,000

387

13.3

15.39

23 , 800

June

700

555

450

600

450

350

350

300

350

450

350

250

200

250

350

*310

290

260

270

270

230

210

210

190

170

160

160

160

140

150

9,160

305

10.5

11.75

18,170

July

130

130

120

120

120

130

120

115

110

105

100

95

80

70

70

65

60

55

50

47

45

40

35

32

30

28

27

25

23

*21

20

2,218

71.5

2.47

2.84

4,400

Aug.

23

23

23

25

2T

18

16

16

16

16

16

14

13

12

12

11

11

11

11

10

9.4

8.7

8.7

8.1

87T

11

13

16

14

13

9.4

437.4

14.1

0.486

0.56

868

Sept.

8.7

8.4

*7.8

8

8

8

8

7

7

6.5

6.5

6.5

6

6

6

6

6

5.5

575

5.5

6

6.5

6

6

7

6.5

7

7

10

20

218.9

7.30

0.252

0.28

434

Calendar year 1955: Max 990 Min 6 Mean 74.6 Cfsm 2.57 In. 34.92 Ac-ft 54,020

Water year 1955-56: Max 900 Min 5.5 Mean 87.5 Cfsm 3.02 In. 41.06 Ac-ft 63,510

* Discharge measurement made on this day.

467Z40 O -58 -13
184 KOOTENAI RIVER BASIN

Smith Creek near Porthill, Idaho

Location. Lat 48°57'40", long 116°33'20", In NE^ sec. 26, T. 65 N., R. 2 W., on right 

bank at U. S. Forest Service bridge, 1 mile south of Smith Creek ranger station and 

4 miles southwest of Porthill.

Drainage area.--70 sq mi, approximately.

Records available. May 1928 to September 1956 (no winter records 1928-30). Monthly discharge only for some periods, published in WSP 131S-»

Gage. Water-stage recorder. Altitude of gage is 1,770 ft (from topographic map). Prior 

To Apr. 20, 1929, staff gage at site 40 ft downstream at datum 2.67 ft lower.

Average discharge.--26 years (1930-56), 190 cfs (137,900 acre-ft per year).

Extremes. Maximum discharge during year, 2.560 cfs May 20 (gage height, 6.37 ft); minimum, 

10 cfs Sept. 18-20 (gage height, 0.43 ft).

1928-56: Maximum discharge, 3,810 cfs June 23, 1955 (gage height, 7.65 ft), from 

rating curve extended above 1,600 cfs by logarithmic plotting; minimum daily, 3 cfs 

Nov. 29, 30, 1952.

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

which are poor. No regulation or diversion 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 Sept. 3-28)

2.0 146

2.5

3.0 

3.5 

4.0 

5.0 

6.0 

7.0

245

385

570

800

1,380

2 ,.160

3,100

Discharge, In cubic feet per second, water ye:v" October 1955 to September 1956

Day

1

2

3

4

5

6

7

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.

*49

44

43

SO

97

64

54

83

340

691

*306

212

190

180

208

192

174

169

212

227

182

163

144

158

603

902

462

359

309

279

243

7,389

238

3.40

3.93

14,660

Nov.

219

204

247

*719

5§o

385

317

287

272

332

255

180

154

165

b!40

b!30

b!50

bl?0

blSO

b!50

138

128

122

118

120

112

102

101

97

9_4

6,358

212

3.03

3.38

12,610

Dec.

91

87

82

80

77

76

74

70

69

66

71

*184

TOT

b85

b75

b75

b75

b80

b90

b95

b!05

154

133

allO

a95

a90

a95

a85

a75

a70

b65

2,780

89.7

1.28

1.48

5,510

Jan.

b70

b75

a80

a75

a65

a65

a70

a65

a62

a58

a56

a58

a54

a52

a52

a52

a50

b50

50

49

48

48

48

47

38

b36

b42

b40

b36

*b35

b32

1,658

53.5

0.764

0.88

3,290

Feb.

b30

b32

b33

b34

b35

b35

b35

b35

b35

b35

36

35

34

33

33

a28

33C7

a29

a30

a31

a32

a31

a31

a31

a31

a31

*31

31

31

______

938

32.3

0.461

0.50

1,860

Mar.

30

30

30

30

29

28

29

28

28

28

28

b27

28

26

27

28

29

30

32

35

33

37

62

77

87

93

70

60

58

64

69

1,290

41.6

0.594

0.69

2,560

Apr.

63

61

60

*77

70

62

57

53

60

77

88

94

112

149

208

274

282

309

353

444

578

"6~6~8 673

606

511

462

470

496

492

*441

8,350

278

3.97

4.44

16,560

May

395

350

317

295

279

292

366

492

586

664

682

554

496

522

673

,010

,330

,610

,800

,040

,040

,790

* ,760

.170

,730

,530

,590

1,480

1,580

1,650

1,770

33,843

1,092

1.56

17.98

67,130

June

 1,910

T/TSO'

1,390

1,670

1,210

885

880

795

990

1,300

1,070

765

735

*800

985

940

865

770

820

825

678

619

610

574

507

466

485

485

412

332

26,533

884

12.6

14.10

52,630

July

309

309

306

295

298

341

287

264

257

245

225

206

190

206

172

178

146

132

120

111

102

93

86

78

70

63

57

52

48

*45

42

5,333

172

2.46

2.83

10,580

Aug.

40

41

43

43

36

35

32

30

29

29

26

25

24

22

21

21

21

a22

a20

a20

a20

a!8

a!6 aTS"

al7

18

19

23

23

25

21

796

25.7

0.367

0.42

1,580

Sept.

a!7

a!5

15

a!4

*14

14

14

13

13

12

12

12

11

11

11

11

11

10

10

10

11

12

11

11

14

12

13

13

18

59.

424

14.1

0.201

0.23

841

Calendar year 1955: Max 2,060 Mln 16 Mean 238 Cfsm 3.40 In. 46.08 Ac-ft 172,000

Water year 1955-56: Max 2,170 Mln 10 Mean 261 Cfsm 3.73 In. 50.86 Ac-ft 189,800

Peak discharge (base. 1,400 cfs). --Oct. 26 (l a.m.] 1,

t); J

460 cfs (5.12 ft); May 20 (1O:30 p.m.) 2,560 

June 10 (10 p.m.) 2,150 cfs (5.99 ft).

. , . --. .. 

cfs (6.37 ft); May 31 (7:30 p.m.) 2,210 cfs (6.03 ft

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Boundary 

Creek near Porthill and other Kootenai River tributaries.

b Stage-discharge relation affected by ice.
KOOTENAI RIVER BASIN 185

Boundary Creek near Porthill, Idaho 

(International gaging station)

Location. Lat 48°59'50", long 116°34'05", in SWi sec. 11, T. 65 N., R. 2 W., on left bank 

near mouth of canyon, 0.2 mile south of international boundary and 3 miles west of 

Porthill.

Drainage area. 97 sq mi, approximately.

Records available.--May 1928 to September 1956 (no winter records 1929, 1930).

Gage. Water-stage recorder. Altitude of gage is 1,770 ft (from topographic map). Prior 

£o Apr. 24, 1929, staff gage at site 140 ft upstream at different datum.

Average discharge. 26 years (1930-56), 191 cfs (138,300 acre-ffc per year).

Extremes.--Maximum discharge during year, 2,610 cfs May 20 (gage height, 5.24 ft); mini- 

 mum, 21 cfs Sept. 18, 19 (gage height, 0.67 ft).

1928-56: Maximum discharge, 3,280 cfs June 23, 1955 (gage height, 5.80 ft), from 

rating curve extended above 2,000 cfs; minimum, 5 cfs sometime between Nov. 10 and 

Dec. 3, 1936; minimum gage height, 0.24 ft Nov. 22, 1952.

Revisions. The maximum discharge for water year 1930 has been revised to 1,020 cfs 

May 20, 1930 (gage height, 3.61 ft), superseding figure published in WSP 707 and 1316.

Remarks. Records excellent except those for periods of ice effect, which are fair. No 

regulation or diversion above station.

Cooperation.--This station is maintained by the United States under agreement with Canada. 

Revisions (water years). WSP 1396: 1943(M), 1945(M), 1950(M), 1953(M).

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

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

0.6 

.7 

1.0 

1.3 

1.6 

2.0

18

22

43

76

124

217

2.5 

3.0 

3.5 

4.0 

5.0

390

610

900

1,310

2,340

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

49

45

 41

55

89

61

52

71

246

454

229

168

153

144

155

146

134

128

142

144

128

120

108

119

280

481

298

247

226 

209

190

5,102

165

1.70

1.96

10, 120

Nov.

173

166

178

 452 4~2~2~

315

270

250

241

270

232

168

157

164

138

b!30

b!40

b!60

b!60

b!50

b!40

b!30

126

122

120

117

106

 108

104 

101

5,510

184

1.90

2.11

10,930

Dec.

100

95

90

87

86

84

82

77

77

75

76

 111

b72

b70

b66

b68

b73

b80

b90

blOO

bllO

blOO

b95

89

89

93

84

b75 

b70

b65

2,606

84.1

0.867

1.00

5,170

Jan.

b70

b75

b85

b75

72

72

75

73

71

70

66

68

67

64

63

63

62

62

61

60

59

59

59

56

53

b50

b55

b50

b47 

b45

*b42

1,949

62.9

0.648

0.75

3,870

Feb.

b41

b41

b45

b47

b48

b48

b48

b48

b49

b?9

b49

b47

b45

b45

b45

b41

b39 b4"0~

b41

b42

42

42

43

42

42

41

*41

41

41

1,273

43.9

0.453

0.49

2,520

Mar.

41

41

40

41

39

b38

39

39

38

38

b38

b36

b37

37

37

37

37

39

41

46

47

49

67

92

108

-9-5 115

87

86 

92

100

1,717

55.4

0.571

0.66

3,410

Apr.

98

90

90

 98

103

92

92

86

8T

104

130

144

173

232

318

422

430

479

524

605

740

812

rra

705

625

590

590

615

620

 575

11,039

368

3.79

4.23

21,900

May

528

479

442

418

394

406

484

610

685

728

746

650

615

645

782

1,120

1,560

1,900

2,110

2,340

2,210

1,940

*1,930

2,270

1,870

1,700

1,690

1,630

1,710

1,770

1,850

38,212

1,233

12.7

14.65

75,790

June

2,020

1,880

1,560

1,770

1,410

1,020

1,020

921

1,070

1,330

1,070

800

758

*837

1,080

986

8 5

806

865

879

770

705

695

650

575

546

580

560

470 

410

28,908

964

9.94

11.08

57,340

July

394

390

378

378

398

402

350

336

329

312

280

264

257

235

209

201

171

155

140

128

122

111

100

89

83

76

73

67

62 

*59

55

6,604

213

2.20

2.53

13,100

Aug.

53

55

58

5?

51

48

47

45

43

42

40

39

37

35

34

34

54

34

33

32

32

30

29

35

32

37

38

37

37 

40

32

1,224

39.5

0.407

0.47

2,430

Sept.

30

 29

28

28

27

27

26

26

26

24

24

24

24

23

23

22

22

21

5T

22

24

23

23

23

26

24

24

24

40 

60

788

26.3

0.271

0.30

1,560

Calendar year 1955: Max 2,020 Mln 27 Mean 240 Cfsm 2.47 In. 33.61 Ac-ft 173,800

Water year 1955-56: Max 2,340 Mln 21 Mean 287 Cfsm 2.96 In. 40.23 Ac-ft 208,100

Peak discharge (base. 1,500 cfs). Hay 20 (9 to 10 p.m.) 2,610 cfs (5.24 ft); June 10 (8 p.m.) 

1,660 cfs (4.36 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
186 KOOTENAI RIVER BASIN

Kootenai River at Porthill, Idaho 

(International gaging station)

Location. Lat 49°00'00", long 116°30'10", in SW£ sec. 8, T. 65 N., R. 1 W., on right bank 

300 ft south of international boundary at Porthill.

Drainage area.--13.700 sq mi, approximately.

Records available.--May to July 1904 and October 1927 to March 1928 (gage heights only) 

and April 1928 to September 1956 in reports of Geological Survey. October 1924 to 

September 1927 (gage heights only) in reports of Department of Northern Affairs and 

National Resources, Canada.

Gage. Water-stage recorder. Datum of gage is 1,700.00 ft above mean sea level referred 

to benchmark 10-M-1928, at elevation 1,767.68 ft. Gage readings have been reduced to 

elevations above mean sea level. Datum of 1929, supplementary adjustment of 1947, and 

datum of Geodetic Survey of Canada, Pub. 24, 1951 edition, are 0.03 ft higher Prior 

to May 17, 1928, staff gages at approximately same site. Datum of gages prior to 

July 28, 1928, was 38.34 ft higher, except in 1904 when different datum was used.

Average discharge . 28 years, 15,680 cfs (11,350,000 acre-ft per year).

Extremes.--Maximum daily discharge during year, 114,000 cfs May 28; maximum elevation

i il£ iZ « e 5A mlnlmunl dal ly discharge, 3,880 cfs Feb. 17; minimum elevation, i,t4i.4f it Mar. 19.

1928-56: Maximum daily discharge, 125,000 cfs June 1, 1948; maximum elevation, that 

? -, t, 5ii. . 6; mlnlmum dally discharge, 1,380 cfs Feb. 8, 1936; minimum elevation, i, i do.21 ft Apr. 3, 1944.

Maximum elevation known, 1,772.7 ft in June 1894, present datum.

Remarks.--Records excellent except those for periods of ice effect at station near Copeland 

and those for period of dike breakages, which are good. Daily discharge represents 

entire flow passing international boundary, computed by adding tributary inflow including that of Boundary Creek, to flow at station near Copeland and correcting for 

storage change in channel and flooded areas between stations near Copeland and at 

Porthill Boundary dike of Reclamation Farm and U. S. Forest Service roadway dike 

(south side of Boundary Creek) remained intact and flow of river was confined throughout year to main channel on which gage and cableway are located. Elevations affected 

by backwater from Kootenay Lake and. by flooding of areas upstream (see Remarks for 

Kootenai River at Boom Camp, p. 175). 

Cooperation. This station is maintained by United States under agreement with Canada.

Elevation, In feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24 

25

26

27

28 

29

30

31

Oct.

46.06

46.05

46.04

45.95

46.00

45.98 

45.94

45.89

46.04

46.36

46.57

46.40

46.33

46.25

46.20

46.21

46.19

46.19

46.19 

46.25

46.26

46.27

46.17

46.09 

46.22

46.82

47.03

47.37 

47.35

47.05

46.76

Nov.

46 57

46.39

46.35

46.58

47.40

47.61 

47.32

46.92

46.63

46.65

46.63

46.37

46.10

45.88

45.81

45.83

45.82

45.90

46.06 

46.17

46.37

46.36

46.23

46.20 

46.23

46.33

46.26

46.20 

46.15

46.11

Dec.

46.13

46.11

46.06

46.00

45.92

45.92 

45.89

45.87

45.89

45.88

45.90

46.11

46.22

46.00

45.87

45.86

45.85

45.75

45.72 

45.76

45.87

46.13

46.46

46.77 

46.70

46.59

46.71

46.75 

46.59

46.39

46.20

Jan.

46.06

45.98

45.95

46.01

46.14

46.16

46.11

46.11

46.00

45.87

45.78

45.73

45.68

45.61

45.54

45.48

45.43

45.35

45.30 

45.25

45.19

45.13

45.09

45.05 

45.00

44.85

44.77

44.71 

44.63

44.57

44.45

Feb.

44.33

44.27

44.23

44.22

44.24

44.24 

44.23

44.18

44.12

44.07

44.03

44.00

43.95

43.84

43.79

43.61

43.53

43.42

43.39 

43.35

43.37

43.37

43.32

43.20

43.11

43.07

42.97

42.88 

42.85

 

Mar.

42.80

42.76

42.67

42.59

42.48

42.35 

42.18

42.12

42.05

41.90

41.79

41.68

41.64

41.54

41.47

41.41

41.35

41.31

41.28 

41.29

41.33

41.36

41.48

41.78 

42.10

42.63

42.98

42.70 

42.41

42.24

42.33

Apr.

42.36

42.28

42.16

42.11

42.25

42.25 

42.14

42.00

41.85

41.90

42.16

42.66

43.06

43.73

44.85

46.42

47.90

49.06

49.95 

50.60

51.75

53.40

54.40

54.44 

53.83

53.00

52.37

52.07 

51.90

51.69

 

May

51.35

50.99

50.47

49.93

49.50

49.15 

49.01

49 . 33

50.35

51.91

53.10

53.42

53.19

52.93

52.92

53.67

55.50

58.10

60.43 

62.65

64.12

63.71

64.65

65.54 

65.48

65.67

66.35

66.62 

66.68

66.73

66.76

June

66.70

67.06

67.25

67.48

67.46

67.20 

66.81

66.28

65.53

64.73

64.14

63.62

63.32

62.89

62.34

61.75

61.25

60.99

60.91 

60.85

60.69

60.47

60.15

59.70 

59.18

58.66

58.17

57.60

57.08

56.58

July

56.11

5B.53

54.99

54.46

54.09

53.85 

53.62

53.45

53.26

53.02

52.84

52.79

52.82

52.92

52.99

53.07

52.96

52.66

52.43 

51.97

51.67

51.44

51.21

50.99 

50.73

50.43

50.05

49.69 

49.29

48.81

48.37

Aug.

47.92

TTBT

47.17

46.94

46.73

46.55 

46.30

46. OO

45.75

45.57

45.41

45.30

45.22

45.16

45.10

45.08

45.06

45.04

45.03 

44.99

44.94

44.87

44.83

44.82 

44.81

44.79

44.77

44.80 

44.80

44.89

44.80

Sept.

44.80

44.94

45.06

45.14

45.20

45.30 

45 39

45J46

45.52

45.56

45.66

45.76

45.80

45.84

45. 87

45.87

45.90

45.95

46.00 

45.99

46.06

46.02

46.04

46.05 

46.00

46.04

46. 15

46.04 

46.02

46.09

Note. Add 1,7OO ft to obtain elevation above mean sea level.
KOOTENAI RIVER BASIN 

Kootenai River at Porthill, Idaho Continued

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

187

Day

1 

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

51

Total

Mean

Cfsm

In.

Ac-ft

Oct.

6,490 

6,540

6,260

6,100

6,520

6,280

6,240

6.060 

7,550

11,200

12,500

11,500

10,000

9,140

8,730

8,430

8,240 

8,170

8,380

8,490

8,770

8,980

8,910

8,820

9,670

11,500

14,600

18,800

19.000

17,000

15,300

303,350

9,785

0.714

0.82

601,700

Nov.

14,000 

12,900

12,200

13, 700

19,100

19.800

18,300

16,200 

14,500

14,100

14,200

12,900

10,600

10,000

8,230

7,110

6.590 

6,900

7,300

7,900

7,620

7,900

8,480

8,410

8,590

8,120

8,190

7,900

7,680

7,670

326,890

10,900

0.796

0.89

648,400

Dec.

7,620 

7,540

7,440

7,240

6,850

6,700

6,600

6,490 

6,370

6,580

6,480

8,240

7,740

6,440

5,770

5,190

4_. 780 

5,350

5,330

5,810

7,070

9,700

11,900

12,500

12.800

12,500

11,600

11,200

11,100

10,600

9,600

250,930

8,095

0.591

0.68

497,700

Jan.

8,620 

8,104

8,130

8,360

9,400

9,370

9.420

9,180 

9,040

8,640

8,210

8,100

7,880

7,790

7,590

7,480

7,170 

6,890

6,870

6,760

6,770

6,770

6,760

6,750

6,550

6,400

5,560

5,460

5,350

5,340

5,170

229,920

7,417

0.541

0.62

456,000

Feb.

4,850 

4,240

4,020

4,210

4,480

4,800

5,100

5,130 

5,240

5,740

5,820

5,820

5,370

5,060

4,730

4,580

5.880 

4,050

4,150

4,600

4,880

5,140

5,570

5,450

5,440

5,570

5,240

5,140

4,910

______

142,610

4,918

0.359

0.39

282,900

Mar.

4,910 

5.00O

5,130

5,240

5,240

5,040

5,080

4,820 

4,770

4,860

4,640

4,640

4,590

4,630

4,720

4,800

4,810 

5,000

5,200

5,480

5,970

6,290

7,370

8,910

11,300

14,400

15.000

15,000

14,000

13,300

13,600

223,740

7,217

0.527

0.61

443,800

Apr.

13,800 

13,500

13,200

13,100

13,800

13,700

13,400

12,700 

12.500

12,600

14,400

15, 900

17,600

20,200

24, 600

30,900

36,500 

40,900

43,400

45,600

49,600

55,500

58 . 800

57,400

52,300

46,800

43,000

41,000

39,800

38,200

904, 500

30,150

2.20

2.46

*1,794

May

36,300 

33, 900

31,400

29,100

27,100

26.000

26,100

28 , 800 

35,700

44,000

49,100

49 , 600

47,600

45, 600

45,300

49 , 100

59,500 

71,800

86,000

99,900

eOD2,000

694,200

fl.05,000

 fl.07,000

5104,000

=409,000

.112,000

eL14, 000

.111,000

aL10,000

6110,000

*2, 100.1

67,750

4.95

5.70

*4,165

June

e!04,000 

106,000

107,000

108,000

106,000

104,000

101,000

96,100 

88,200

79,800

72,800

71,200

70, 900

68,500

64, 700

61,400

59,300 

59,600

61,000

61, 800

61,200

60,300

58,900

56,000

53, 100

50,800

48,300

45, 600

45,000

41.800

*2,170 . 3

72,340

5.28

5.89

*4,305

July

41.100 

39,100

37,200

35,400

34, 900

34, 700

34,800

35,100 

34, 700

33,800

33,600

33, 900

34,400

35,000

35, 700

36,100

35, 400 

33,800

31,400

30,100

28,900

28,000

27,400

26,900

25,900

24,700

23,800

22,400

21,000

19,700

18.400

967,300

31,200

2.28

2.63

*1,919

Aug.

17.400 

16,500

16,000

15,500

15,300

15,300

14,900

14,100 

13,200

12,800

12,600

12,400

12,100

11,700

11,400

11,200

11,100 

11,000

11,100

10,900

10,600

10,200

9,950

9.800

9,810

9,960

10,200

10,200

10,200

10,100

9,940

377,440

12,180

0.889

1.02

748,600

Sept.

9.530 

9,110

8,760

8,560

8,260

7,850

7,640

7,500 

7,170

7,040

6,830

6,710

6,680

6,430

6,380

6.240

6,3'40 

6,270

6,370

6,300

6,380

6,510

6,500

6,630

6,520

6,340

6,320

6,430

6,470

7,140

211,210

7,040

0.514

0.57

418,900

Calendar year 1955: Max 

Water year 1955-56: Max

88,700 Min 2,720 Mean 17,050 Cfsm 1.24 In. 

114,000 Min 3,880 Mean 22,430 Cfsm 1.64 In.

16.88 Ac-ft 12,330,000 

22.28 Ac-ft 16,280,000

e Discharge affected by large storage change as a result of dike breakages upstream.

Note . Stage-fall-discharge relation for station at Copeland affected by ice Nov. 19 to Mar. 28.
188 KOOTENAI RIVER BASIN

Kootenay Lake at Kuskonook, British Columbia 

(International gaging station)

Location. Lat 49°18 I , long 116°40i, on east shore of Lake at Kuskonook. 

Records available.--April 1936 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,735.20 ft above mean sea level, Geodetic

 Purvey of Canada, datum of Pub. 24, 1951 edition, which is the same at Porthill as 

datum of 1929, supplementary adjustment of 1947, and 0.03 ft higher than datum in use 

at station Kootenai River at Porthill. Gage heights have been reduced to elevations 

above datum in use at station Kootenai River at Porthill. Prior to Apr. 25, 1938, 

staff gage at same site at datum 3.00 ft higher.

Extremes.--Maximum elevation during year, 1,762.16 ft June 5; minimum, 1,740.19 ft Apr. 11.

 1936-56: Maximum elevation, that of June 5, 1956; minimum daily, 1,737.86 ft Apr. 5, 

6, 1944.

Remarks.--Elevation is subject to partial regulation by Corra Linn Dam below outlet. Diversions for irrigation of about 14,600 acres above Kootenay Lake.

Cooperation.--This station is maintained by Canada under agreement with the United States.

Mean elevation, in feet, 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

Oct.

45.76

45.77

45.76

45.73

45.73

45.73

45.71

45.68

45.73

45.78

45.75

45.74

45.76

45.76

45.75

45.75

45.77

45.78

45.78

45.80

45.81

45.78

45.71

45.67

45.73

46.02

45.96

45.81

45.70

45. 62

45.57

Nov.

45.55

45.52

45.58

45.63

45.64

45.70

45.69

45.57

45.50

45.57

45.53

_

-

-

-

_

-

-

45.66

45.72

45.78

45.72

45.67

45.67

45.70

45.68

45.64

45.65

45.64

45. 62

Dec.

45.62

45.60

45.57

45.53

45.48

45.48

45.48

45.47

45.49

45.49

45.52

45.58

45.55

45.50

-

_

-

-

-

-

_

-

45.55

45.56

45.60

45.66

45.71

45.70

45.67

45.62

Jan.

_

-

45.37

45.40

45.45

45.42

45.39

45.36

45.30

45.22

45.18

45.14

45.11

45.06

45.02

44.97

44.92

44.87

44.83

44.78

44.72

44.67

44.64

44. 61

44.56

44.48

44.41

44.35

44.29

Feb.

_

-

-

-

-

43.90

43.89

43.84

43.75

43.70

43.65

43.62

43.56

43.49

43.44

43.31

43.23

43.15

43.10

43.03

43.03

43.01

42.92

42.78

42.72

42.66

42.54

42.47

_

Mar.

.

-

-

-

42.06

41.93

41.78

41.72

41.65

41.52

41.42

41.30

41.25

41.14

41.06

40.98

40.90

40.82

40.75

40.70

40.65

40.60

40.54

40.53

40.48

40.47

40.50

40.52

40.52

40.52 

40.53

Apr.

40.51

40.48

40.45

40.44

40.42

40.39

40.37

40.33

40.30

40.27

40.23

40.27

40.35

40.47

40.67

41.02

41.47

41.99

42.53

43.11

_

44.41

45.20

45.90

46.43

46.78

46.99

47.11

47.20

47.21

May

47.20

47.19

47.07

46.89

46.69

46.48

46.29

46.15

46. 15

46.30

46.64

47.00

47.27

47.46

47.63

_

48.27

48.99

50.03

51.41

52.95

54.29

55.28

56.35

57.33

58.01

58.60

59.17

59.64

60.06 

60.42

June

60.84

61.25

61.51

61.77

62.01

62.01

61.81

61.46

60.97

60.46

60.08

59.55

59.00

58.50

58.07

57.67

57.29

56.91

56.61

56.42

56.22

55.98

55.72

55.44

55.14

_

-

_

_

July

.

52.38

51.98

51.61

51.29

51.00

50.74

50.49

50.30

50.15

50.02

49.94

49.92

49.95

49.95

49.93

49.88

49.80

49.69

49.53

49.37

49.21

49.05

48.88

48.69

48.50

48.23

48.00

47.71

47.37 

47.03

Aug.

46.69

4S.32

46.00

45.76

45.55

45.37

45.13

44.89

44.71

44.58

44.46

44.36

44.31

44.30

44.27

44.29

44.28

44.28

44.26

44.23

44.21

44.19

44.19

44.19

44.18

44.15

44.15

44. 14

44.15

44.19 

44.13

Sept.

44.21

44.39

44.53

44.64

44.76

44.89

45.00

45.08

45.16

45.24

45.35

45.44

45.48

45.53

45.57

45.60

45.62

45.66

45.72

45.72

45.76

45.74

45.73

45.73

45.73

45.77

45.84

45.75

45.72

45 75

Note. Add 1,700 ft to obtain elevation above mean sea level.
COLUMBIA RIVER MAIN STEM 189

Columbia River at Birchbank, British Columbia 

(International gaging station)

Location.--Lat 49°10', long 117°43', on right bank at Birchbank, British Columbia,

7 miles upstream from Trail, 11 miles downstream from Kootenay River, and 17 -niles upstream from international boundary.

Drainage area.--34 .000 sq mi, approximately.

Records available. April 1913 to September 1956. Published as "at Trail, British Columbia" 1913-37.

Gage. Water-stage recorder. Datum of gage is 1,329.90 ft above mean sea level, 1947 

international Joint adjustment, published as 1,338.00 ft prior to October 1948. Prior 

to Oct. 1, 1937, chain or wire-weight gage on highway bridge at site 7 miles downstream at datum 16.27 ft lower.

Average discharge. 43 years, 70,300 cfs (50,900,000 acre-ft per year).

Extremes. Maximum discharge during year, 334,000 cfs June 7 (gage height, 47.37 ft); minimum, 16,800 cfs Feb. 5 (gage height, 5.52 ft).

1913-56: Maximum discharge, 370,000 cfs June 11, 1948 (gage height, 50.62 ft); 

minimum observed, 8,940 cfs Feb. 3, 1937 (gage height, 6.27 ft, site and datum then in 

use) .

Remarks. Many small diversions above station for irrigation of about 25,000 acres. 

Fluctuation at low flow caused by powerplant on Kootenay River. Flow affected by 

internationally controlled storage in Kootenay Lake, as well as by natural and controlled regulation in other lakes.

Cooperation. This station is one of the international gaging stations maintained by 

Canada under agreement with the United States.

Revisions (water years).--WSP 982: 1942. WSP 1216: 1949.

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

discharge, In cubic feet per second)

Oct. 1 to Nov. 15 Nov. 16 to Sept. 30

8.5

11.0

15.0

30,200 

41,500 

6t,000

5.5

7.0

10.0

15.0

20.0

16,700

23,200

36,800

62,500

92,800

25.0

30.0

37.0

48.0

128,000

165,000

223,000

342,000

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

Cf sm

In.

Ac-ft

Oct.

a33,700

a34,600

a34,000

a33,500

a55,500

a32,600

331,400 

350.400

35,600

41,000

42,600

39,500

37,400

37,800

35,800

35,000

34,600

35,300

36,600

36,500

38,300

39,600

37,400

35,400

35,300

43,700

57,800

58.700

57,100

55,500 

51,200

40,221.4

39,400

1.16

1.34

*2,425

Nov.

48,800

45,100

45,100

51,600

54,000

53,300

56.700 

56,000

50,700

47,000

46,500

45,100

42,300

38,200

33,100

30,900

30,300

29,600 

29.400

28.800

31,700

36,900

*34,200

31,200

34,000

35,500

31,200

29,200

30,600

30,300

tt.,187.3

39,600

1.16

1.29

*2,355

Dec.

50.200

29,600

29,500

29,100

27 , 700

26 , 400

26,400 

25,100

24,500

24,500

24,300

26,600

27,900

25,400

23,800

23,100

22,200

21.700 

21,800

21,700

21 , 900

24,900

28,200

27,900

27 , 500

27,600

28,900

30,100

29,000

27,400 

27,200

812,100

26,200

0.77

0.89

*1,611

Jan.

27,200

27,200

25,700

* 23, 400

25,000

27,200

28.200 

28,200

27 , 900

26 , 200

25,400

*24,600

25,000

25,400

24,300

24,300

24,200

23,600 

22,800

23,300

23,600

23,500

22,700

22,600

23,100

23,100

21,800

20,800

19, 700

19,800 

19.000

748,800

24,200

0.71

0.82

*1,485

Feb.

18,400

18,000

18,000

17.000

17,100

17,700

18,500 

20,100

*20,500

19,300

19,000

19,300

19,900

20,500

20,100

18,200

18,000

18,200 

17,900

18,200

18,400

19,400

21.600

21,400

20,600

20, 700

20,100

19,200

19,700

-

555,000

19,100

0.56

0.60

tl,101

Mar.

20,500

21,200

21,800

22,300

22,200

22,100

21,400 

20,200

20,200

20, 200

20,700

19,700

19,400

19,000

18,900

19,100

19,000

19,500 

18.400

19,300

20,500

21,400

23,000

25,800

28,200

29,300

2S,000

23,300

29,300

2a,200 

gj.500

699, 60C

22,600

0.66

0.76

*1,388

Apr.

29,600

29.500

29,600

29,900

30,000

30,000

29,900 

29,900

29,700

30,200

31,000

31,100

31,800

33,000

35,000

38,100

40,600

43,500 

46,700

50,700

55,500

61,500

67,200

71,700

76,600

60,600

33,800

36,900

39,500

91.400

tt, -144.5

48,200

1.42

1.58

*2,865

May

92,700

93,500

*93,100

92,500

91,400

90,300

89.600 

90,000

90,900

92,600

95,400

98,000

100,000

103,000

106,000

110,000

116,000

124,000 

137,000

152,000

170,000

*190, 000

207,000

223,000

238,000

249,000

259,000

266,000

272,000

278,000 

"284,000

*4,694

151,000

4.44

5.12

*9,310

June

292,000

302,000

309,000

318,000

*326,000

332,000

*332,000 

329,000

322,000

315,000

313,000

311,000

307,000

299,000

291,000

282,000

274,000

268,000 

266,000

265,000

263,000

260,000

256,000

252,000

248,000

241,000

234,000

228,000

223,000

217,000

*8,475

282,000

8.29

9.25

*16, 810

July

211,000

205,000

199,000

194,000

190,000

187,000

185,000 

182,000

180,000

178,000

176,000

176,000

178,000

182,000

184,000

185,000

184,000

182,000 

179,000

177,000

177,000

177,000

177,000

176,000

175,000

173,000

169,000

169,000

164,000

159,000 

153,000

*5,583

180,000

5.29

6.10

til, 070

Aug.

148,000

142,000

134,000

128,000

125,00ff

122,000

118,000 

113,000

107,000

103,000

98,900

95,300

90, 900

88,200

86,900

85,900

85,700

86,200 

86,600

85,500

*85,600

85,000

84,400

84,200

84,400

85,100

85,700

86,200

85,100

84,200 

82.500

t5,062.3

98,800

2.91

3.56

t6,074

Sept.

70.000

67,900

65,500

65,200

58,700

*56,500

54,600 

55,100

50,900

48,400

45,800

45,800

46 , 400

45 , 900

45,500

44,600

44,400

42.500 

45,800

* 45, 000

45,200

45,100

45,200

45,100

44,800

44,300

47,500

49,400

48,500

48,900

tl,500. 1

50,000

1.47

1.64

t2,975

Calendar year 1955: Max 322,000 Mln 16,900 Mean 75,600 Cfsm 2.17 In. 29.59 Ac-ft 55,500,000 

Water year 1955-56: Max 552,000 Mln 17,000 Mean 81,900 Cfsm 2.41 In. 52.75 Ae-ft 59,470,000

* Discharge measurement made on this day.

t Expressed In thousands.

a No gage-height record; discharge estimated on basis of records for station at Trail, B.C.
190 PEND OREILLE RIVER BASIN

German Gulch Creek near Ramsay, Mont.

Location.--Lat 46°00'50", long 112°47'30", In SEjjNWj;- sec. 13, T. 3 N., R. 10 W., about 

half a mile upstream from mouth and 6? miles west of Ramsay. Prior to May 6, 1956, at 

site 300 ft upstream from mouth.

Drainage area. 41 sq ml, approximately.

Records available. April 1955 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,200 ft (by barometer). Prior to May 6, 

1956, staff gage at site 300 ft upstream from mouth at different datum.

Extremes. Maximum discharge observed during year, 187 cfs May 28 (gage height, 2.60 ft), 

result of discharge measurement, but probably exceeded 200 cfs about May 25; minimum 

observed, 1.4 cfs Oct. 26-30.

1955-56: Maximum discharge, that of May 1956; minimum, that of Oct. 26-30, 1955.

Remarks. Records poor. Prior to May 6, 1956, at site affected by diversions for irrigation of about 250 acres. Measurements of these diversions, in cubic feet per second, 

for the water year 1956, are listed below. Records for May 6 to Sept. 30 are not affected by diversions.

Ditch No. 1

Date

Oct. 7 

Nov. 9 

May I 

22 

28

Discharge

0.2 

0 

0 

0 

4.6

Ditch No. 2

Date

Oct. 7 

Nov. 9 

May 1 

22 

28

Discharge

4.6 

O 

O 

5.2 

3.1

May~15". Note. Ditches were operated Oct. 1-31 and after about 

Rating tables, water year 1955-56, except period of backwater from beaver 

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

(Shifting-control method used Apr. 9 to May 5)

.9

1.0

(Shifting

Oct. 1 to May 5

1.2 

1.4 

1.6

May 6 to Sept. 3O

0.5

2.0 

6.0

1.7

1.8

1.9

2.0

8.0

12

27

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

4.0

4.0

4.0

3.6

3.8

3.8

*4.0

4.0

4.0

4.0

3.6

3.6

3.6

3.6

3.4

3.2

3.2

3.6

3.6

3.6

3.6

3.6

2.8 

2.8

1.6

1.4

1.4

1.4

1.4

1.4

JL.O

104.6

3.37

207

Nov.

8.4

7.8

7.8

7.8

7.8

7.8

7.2

8.4

*9.0

9

6

4

3

3

3

3

4

5

7

8

8

8

8 

8

9

9

9

9

8

8

211.0

7.03

419

Dec.

8

7

7

7

7

7

7

7

7

7

7

8

10

10

9

7

7

7

7

8

*9

11

11 

10

9

10

10

9

7

7

7

251

8.1

498

Jan.

7

7

8

9

9

9

9

9

9

9

9

*8

8

7

6

6

6

6

6

6

7

7

6 

6

6

6

5

5

5

5

4

215

6.9

426

Feb.

4

4

5

5

6

6

6

6

6

6

6

6

6

5

5

4

4

4

4

4

*5

7

8 

6

5

5

5

6

7

156

5.4

309

Mar.

7

7

7

7

7

6

5

4

4

4

4

4

5

5

6

7

10

12

15

20

25

30

40 

*66

26

26

24

23

23

*22

21

472

15.2

936

Apr.

19

19

18

17

13

13

13

10

12~ 8.4

11

14

13

18

20

32

36

38

42

42

43

41

37 

37

36

40

38

34

35

33

782.4

26.1

1,550

May

*35

37

34

31

29

40

110

(*)

180

(*)

2,886

93.1

5,720

June

130

60

' 35

2,250

75.0

4,460

July

 25

*21

21

21

21

19

18

18

17

17

16

16

15

15

14

16

16

16

15

15

627

20.2

1,240

Aug.

14

13

13

13

13

15

16

14

14

13

13

12

11

11

11

11

18

T3

12

11

*lo

10

fi9.6

11

12

11

11

12

12

378.8

12.2

751

Sept.

10

10

10

10

10 1 "10

t "

9

(")

8

276

9.2

547

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max Mln 1.4 Mean £3.5 Ac-ft 17,060

* Discharge measurement made on this day.

Note. No gage-height record Oct. 5, 6, 15, Nov. 10 to Mar. 23 (except scattered readings affected 

by ice, May 6 to July 12); discharge estimated on basis of 5 discharge measurements, weather records, 

and records for Boulder River near Boulder and Middle Pork Rock Creek near Philipsburg. Backwater 

from beaver dam Sept. 8-3O; discharge interpolated.
PEND OREILLE RIVER BASIN 191

Flint Creek near Southern Cross, Mont.

Location. --La t 46°14'00", long 113°17'40", in SE^NWi sec. 36, T. 6 N., R. 14 W on left

 wing of weir half a mile downstream from powerplant, 2 miles downstream from Georgetown Lake, 3 miles northwest of Southern Cross, and 6 miles south of Phillpsburg.

Drainage area. --52. 6 sq mi.

Records available. October 1940 to September 1956.

Gage. Staff gage and Cippoletti weir; gage read once daily. Altitude of gage is 

~^5,630 ft (from topographic map).

Average discharge. 16 years, 31.5 cfs (22,810 acre-ft per year).

Extremes. Maximum discharge during year, 32 cfs June 2-17; maximum gage height, 0.86 ft

 AugT27 to Sept. 6, Sept. 11-30; minimum discharge, 6.0 cfs Feb. 22 23.

1940-56- Maximom discharge, 174 cfs June 13, 1942 (gage height, 1.86 ft); probably 

no flow for parts of Aug. 20? 1943, May 23, 1952, Oct. 6, 1954, when generator was 

shut down.

Remarks. Records good. Flow regulated by Georgetown Lake (see p. 238). Flow may be

 augmented by transbasin diversion from Silver Lake to Georgetown Lake or reduced by 

pumping from Georgetown Lake to Silver Lake.

Cooperation. Gage-height record furnished by The Montana Power Co., under general super-

 vision of Geological Survey, in connection with a Federal Power Commission project.

Revisions (water years ).--WSP 1216: 1942(M). WSP 1246: Drainage area.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

0.2 

.3 

.4

3.8

6.5

10 .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.

31

3T

31

31

31

31

*31

31

31

31

31

31

31

31

31

31

31

31

25

1_6

16

16

16

16

16

16

16

16

17

17

17

778

25.1

1,540

Nov.

17

16

16

16

17

17

17

17

*17

17

17

17

17

17

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

491

16.4

974

Dec.

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

22

2?

*16

16

16

16

16

16

16

16

16

16

16

16

508

16.4

1,010

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

11

6.0

6T?

6.E

6.2

6.2

6.2

6.2

390.2

13.5

774

Mar.

6.2

6^

6.2

6.2

6.2

6.2

6.2

11

15

15

15

15

15

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

*16

16

417.4

13.5

828

Apr.

16

16

16

16

16

16

16

16

16

16

16

16

16

17

17

17

17

17

18

18

18

18

18

18

18

18

18

18

18

17

508

16.9

1,010

May

*17

IT

18

Te

18

18

17

18

18

18

18

IS

18

18

18

18

18

18

18

18

18

18

18

*18

18

18

18

18

18

18

18

555

17.9

1,100

June

31

3232"

32

32

32

32

32

32

32

32

32

32

32

*32

32

32

31

31

31

31

31

30

30

3O

30

30

30

30

H

937

31.2

1,860

July

29

29

30

5S

29

29

28

28

29

29

29

28

*28

28

28

28

28

28

28

28

28

28

28

28

28

28

28

28

28

28

28

878

28.3

1,740

Aug.

27

27

27

27

27

27

28

7T

26

27

26

26

27

27

27

27

26

26

26

26

 26

26

26

26

26

26

27

27

27

27

27

825

26.6

1,640

Sept.

27

57

27

27

27

27

26

2T

26

26

27

27

27

27

27

27

27

*27

27

27

27

27

27

27

27

27

27

27

27

27

806

26.9

1,600

Calendar year 1955: Max 43 Mln 4.6 Mean 18.3 Ac-ft 13,280

Water year 1955-56: Max 32 Mln 6.0 Mean 20.7 Ac-ft 15,060

Discharge measurement made on this day.
192 FEND OREILLE RIVER BASIN

Flint Creek at Maxville, Mont.

Location. Lat 46°28'00", long 113°14'30", in NW^ sec. 9, T. 8 N., R. 13 W., on right bank 

CT.4 mile west of Maxville and 1 mile upstream from Boulder Creek.

Drainage area. 208 sq mi.

Records available .--August 1941 to September 1956. April 1939 to September 1941 at site 

half a mile upstream (above Maxville siding), records not equivalent owing to diversions.

~Gage. Water-stage recorder. Datum of gage is 4,828.44 ft above mean sea level, datum of 

Average discharge . --15 years, 102 cfs (73,840 acre-ft per year).

Extremes . Maximum discharge during year, 638 cfs Mar. 24 (gage height, 5.16 ft); minimum 

daily, 35 cfs Jan. 31, Feb. 1.

1941-56: Maximum discharge, 1,680 cfs Mar. 28, 1943 (gage height, C.79 ft), from 

rating curve extended above 600 cfs; minimum daily, 25 cfs at times during 1953, 1955.

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

which are fair. Diversions for irrigation of about 8,200 acres above station. During 

irrigation season, flow is supplemented by water from East Fork Rock Creek which is 

diverted in sec. 5, T. 4 N., R. 14 W., 500 ft below Rock Creek Dam, through a canal 

into Trout Creek, thence into Flint Creek. Some regulation by Georgetown Lake (see p. 238) .

Revisions. --WSP 1216: 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 26-31)

1.7

2.0 

3.0

4.0 

4.5

360

469

180

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

102

99

97

99

105

98

*99

95

92

89

97

94

90

89

87

85

85

83

84

84

82

83

83

81

80

80

80

80

80

85

80

2,745

88.5

5,440

Nov.

74

73

73

77

85

73

71

70

*71

80

74

51

b48

b45

b45

b45

b48

b50

81

109

81

70

65

66

64

67

65

66

66

64

2,017

67.2

4,000

Dec.

b63

b62

b58

b60

b60

b60

58

b58

b58

59

b59

b60

b60

b58

b55

b53

b52

b50

b55

*b65

b70

b250

305

108

93

103

82

70

b65

b57

b55

2,421

78.1

4,800

Jan.

b53

b53

54

65

61

49

49

52

54

49

56

*51

48

46

49

42

50

47

51

52

52

52

52

50

b46

b45

b42

b40

b39

b37

a35

1,521

49.1

3,020

Feb.

a35

b37

b43

53

52

53

52

55

46

51

55

57

51

51

49

b47

b48

50

52

51

*56

61

62

52

48

53

47

46

49 _ -----

1,462

50.4

2,900

Mar.

49

49

43

40

b40

b38

b38

b37

b37

b37

b37

a37

a38

a39

a40

a43

b48

b51

b55

63

70

118

250

377

458

306

134

110

*117

130

136

3,045

98.2

6,040

Apr.

103

89

88

89

85

26

80

81

90

111

123

110

116

128

136

148

202

186

155

162

177

188

180

202

179

152

141

140

125

*118

3,960

132

7,850

May

115

106

103

106

119

106

104

144

150

172

160

144

132

119

111

122

149

171

187

183

187

*190

202

220

208

200

202

194

*193

177

174

4,850

156

9,620

June

196

227

194

197

179

142

115

100

98

89

89

84

76

68

*70

122

158

159

162

143

198

166

148

181

175

143

135

125

109

106

4,154

138

8,240

July

108

99

130

130

126

146

120

107

86

79

77

*83

81

78

88

85

79

75

12

94

107

117

122

122

119

126

131

141

147

149

144

3,368

109

6,680

Aug.

159

149

148

144

138

138

148

148

134

128

132

130

a!25

a!20

allS

allO

a!34

a!30

a!25

a!20

*115

110

102

98

95.

106

117

123

119

128

117

3,905

126

7,750

Sept.

114

110

98

97

97

96

100

97

83

79

76

70

63

60

58

59

60

*55

54

54

55

60

70

71

71

70

72

77

88

90

2,304

76.8

4,570

Calendar year 1955 : Max 464 Kin 25 Mean 93.2 Ac-ft 67,450

Water year 1955-56 : Max 438 Mln 35 Mean 97.7 Ac-ft 70,910

* Discharge measurement made on this day.

a No gage-height record; discharge interpolated or estimated on basis of weather rec

b stage-discharge relation affected by ice.
PEND OREILLE RIVER BASIN 193

Boulder Creek at Maxville, Mont.

Location.--Lat 46°28'30", long 113° 14 "00", In SE^ sec. 4, T. 8 N., R. 13 W., on right bank 

an eighth of a mile upstream from mouth and three-quarters of a mile north of Maxville.

Drainage area. 71.3 sq mi.

Records available.--April 1939 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,750 ft (from topographic map).

Apr. 15, 1939, to July 7, 1941, wire-weight gage at site 75 ft upstream at different 

datum. July 8-20, 1941, staff gage at site 175 ft upstream at datum 1.03 ft higher.

Average discharge. 17 years, 47.4 cfs (34,320 acre-ft per year).

Extremes. Maximum discharge during year, 388 cfs May 22 (gage height, 3.30 ft); minimum 

not determined.

1939-56: Maximum discharge, 764 cfs June 13, 1953; maximum gage height, 4.24 ft 

June 3, 1948; minimum discharge, 4.2 cfs Sept. 12, 13, 1954 (gage height, 0.74 ft).

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

or backwater from beaver dam, which are poor. Diversions for irrigation of about 

350 acres, all of which lie below station.

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

backwater from beaver dam (gage height, In feet, and discharge, 

in cubic feet per second)

0.8 

1.0 

1.2 

1.5

5.0

11

20

39

2.0 

2.5 

3.0 

3.5

169

305

487

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota:

Mean

Ac- ft

Oct.

16

16

14

T6

18

22

*24

24

25

26

27

27

29

2TT

27

26

26

26

25

26

25

26

26

25

25

25

25

25

26

27

26

749

24.2

1,490

Nov.

24

25

27

27

27

26

25

27

*26

29.

29

19

14

10

7.

8

8

10

12

13

13

13

14

15

15

14

13

13

12

11

526

17.5

1,040

Dec.

10

TO

10

11

12

14

16

18

20

20

18

16

14

12

11

11

11

12

15

*20

28

20

18

20

24

28

32

32

28

20

14

545

17.6

1,080

Jan.

12

10

10

12

13

14

15

16

17

18

19

*19

20

20

20

20

20

20

20

21

21

21

20

16

14

12

11

10

10

10

9

490

15.8

972

Feb.

8

8

8

10

12

14

16

16

15

14

15

16

17

16

14

10

10

16

19

*19

18

17

17

17

16

16

16

15

15

420

14.5

833

Mar.

16

16

16

16

17

16

14

13

12

11

11

lo- 10

12

12

13

14

15

16

18

19

22

24

24

22

21

*20

21

21

510

16.5

1,010

Apr.

 2T 21

22

23

24

26

28

30

32

34

38

42

46

50

54

60

64

68

72

70

66

64

66

68

70

68

66

60

54

*51

1,458

48.6

2,890

May

50

48

46

45

TS

45

51

68

81

93

86

77

72

68

74

98

137

190

242

290

315

322

328

*342

278

287

278

*266

257

266

5,141

166

10,200

June

299

302

22 jj

220

200

158

131

126

126

123

118

109

101

98

*105

165

142

126

106

108

135

112

99

112

106

92

84

77

69

65

4,042

135

8,020

July

63

62

75

7668"

69

61

55

51

48

44

*42

41

41

45

41

37

34

33

33

35

32

29

26

24

23

22

25

24

24

1,305

42.1

2,590

Aug.

2B" 26

24

22

20

20

22

21

19

18

19

17

16

16

16

16

15

15

14

14

*12

8.6

8.3

7.7

978

9.8

11

12

12

12

11

489.2

15.8

970

Sept.

8

(*)

h 6

200

6.7

397

Calendar year 1955: Max 296 Mln 7 Mean 45.3 Ac-ft 32,820

Water year 1955-56: Max 342 Mln - Mean 43.4 Ao-ft 31,490

Peak discharge (base, 150 efs). May 22 (10:30 p.m.) 388 cfs (3.30 ft); June 16 (8 p.m.) 178 cfs 

' 4B ftl.

Discharge measurement made on this day.

lelght
194 FEND OREILLE RIVER BASIN

Middle Pork Rock Creek near Philipsburg, Mont.

Location. Lat 46°11', long 113°30', in NE£ sec. 17, T. 5 N., R. 15 W., on right bank 

a quarter of a mile upstream from East Pork, 2| miles upstream from West Pork, and 

15 miles southwest of Philipsburg. Prior to Oct. 1, 1955, at site 300 ft upstream.

Drainage area. 123 sq mi.

Records available. September 1937 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,450 ft (from topographic map). Sept. 21, 

T937, to May 10, 1942, wire-weight gage at site 600 ft upstream at different datum. 

May 11, 1942, to May 11, 1954, staff or wire-weight gages at site 400 ft downstream at 

different datum. May 12, 1954, to Sept. 30, 1955, at site 300 ft upstream at 5.74 ft 

higher datum.

Average discharge.--19 years (1937-56), 122 cfs (88,320 acre-ft per year).

Extremes.--Maximum discharge during year, 1,220 cfs May 25 (gage height, 4.73 ft); minimum daily, 10 cfs Nov. 16, 17.

1937-56: Maximum discharge, 1,430 cfs June 13, 1953 (gage height, 3.92 ft, site and 

datum then in use); minimum observed, 4.5 cfs Dec. 9, 10, 23, 24, 1944 (gage height 

0.02 ft, site and datum then in use).

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

which are poor. A few small diversions for irrigation above station.

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

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

2.0 

2.5 

3.0

54

135

265

3.5

4.0 

4.7

470

740

1,200

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

Cfsm

In.

Ac-ft

Oct.

48

46

44

44

48

49

*49

49

48

47

50

50

49

48

47

46

44

43

43

44

44

44

44

43

12

43

43

44

46

49 

48

1,426

46.0

0.374

0.43

2,830

Nov.

44

47

48

47

54

48

46

47

*47

58

59

34

25

20

15

IP.

10

15

20

25

27

30

32

30

30

28

25

23

21

20

985

32.8

0.267

0.30

1,950

Dec.

18

17

16

18

20

25

30

32

35

35

39

25

20

15

20

30

45

50

45

*45

60

10

70

65

60

65

60

50

40

25

1,166

37.6

0.306

0.35

2,310

Jan.

20

20

22

24

27

30

32

33

34

35

33

*31

30

30

30

32

34

36

38

40

42

43

40

35

30

26

24

22

20

18 

16

927

29.9

0.243

0.28

1,840

Feb.

15

15

16

18

25

30

35

36

36

38

40

42

40

35

30

20

18

15

20

35

*42

45

50

50

48

44

42

40

40

960

33.1

0.269

0.29

1,900

Mar.

40

45

45

40

30

25

22

20

20

18

16

15

15

17

20

25

30

40

50

60

70

85

250

265

232

177

123

74

44

*42 

42

1,997

64.4

0.524

0.60

3,960

Apr.

41

40

38

39

38

37

40

39

42

48

55

59

67

76

90

110

127

115

121

144

177

213

232

244

221

210

204

200

192

184

3,443

115

0.935

1.04

6,830

May

*180

175

172

168

168

163

180

210

238

268

276

262

250

241

241

276

352

490

*615

782

848

*932

1,030

*1.140

1,140

1,070

1,070

1,000

976

908 

934

16,755

540

4.39

5.07

33,230

June

1,050

1.070

896

866

854

674

535

495

535

570

580

525

470

435

440

415

420

368

344

384

384

312

286

324

312

272

259

253

247

229

14,904

497

4.04

4.51

29,560

July

218

213

256

221

210

197

184

177

170

165

163

158

*149

151

151

140

133

125

123

119

123

115

111

104

101

96

97

99

106

99 

94

4,568

147

1.20

1.38

9,060

Aug.

106

97

106

94

88

88

88

86

82

82

80

76

73

70

70

73

68

66

66

64

*59

55

55

59

70

68

64

66 

64

2,293

74.0

0.602

0.69

4,550

Sept.

62

57

55

55

54

54

52

50

50

49

48

47

50

48

47

46

46

*44

46

46

46

48

48

47

46

44

44

50

49

48

1,474

49.1

0.399

0.45

2,920

Calendar year 1955; Max 812 jjln 10 Mean 123 Cfsm 1.00 In. 13.59 Ac-ft 89,150

Water year 1955-56; Max 1,140 Min 10 Mean 139 Cfsm 1.13 In. 15.39 Ac-ft 100,900

Peak discharge (base. 450 cfs). May 25 (2:30 to 4: 

1,200 cfs (4.70 ft)j June 11 (5:30 a.m.) 620 cfs (3.8 

* Discharge measurement made on this day.

45 a.m.) 1,220 cfs (4.73 ft); June 2 (7 a.m.)

80 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 13 to Mar. 22 (no gage-height 

'A, Dec. 25, Jan. 15-17, 29, 30, Feb. ll-14j discharge estimated on basis of weather 

 ecords for Flint Creek and Boulder Creek at Maxville).

record Nov. 18- 

;r records and
PEND OREILLE RIVER BASIN 195

Nevada Creek above reservoir, near Finn, Mont.

Location. Lab 46°46'30", long 112°45'20", near south line of sec. 20, T. 12 N., R. 9 W., 

on right bank a quarter of a mile downstream from Gallagher Creek, 2 miles upstream 

from Buffalo Creek, and 3 miles west of Finn.

Drainage area. 116 sq mi.

Records available.--April 1939 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 4,660 ft (from river-profile survey). 

Prior to Apr. 30, 1942, wire-weight gage at site seven-eighths of a mile downstream at 

different datum. Apr. 30, 1942, to July 26, 1953, water-stage recorder at site 1 mile 

downstream at different datum.

Average discharge.--17 years, 36.2 cfs (26,210 acre-ft per year).

Extremes. Maximum discharge during year, 297 cfs Hay 22 (gage height, 3.82 ft); maximum 

gage height, about 4.7 ft Mar. 24 (backwater from ice); minimum daily discharge, 4 cfs 

Nov. 16.

1939-56: Maximum discharge, 1,800 cfs June 2, 1953 (gage height, 6.00 ft, site and 

datum then in use), from rating curve extended above 400 cfs on basis of inflow-outflow 

study of Nevada Creek Reservoir; maximum gage height, 7.40 ft May 29, 1953, site and 

datum then in use (backwater from diversion dam); minimum discharge, probably less than 

2 cfs at times in January and February 1944.

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

which are poor. Diversions for Irrigation of about 2,500 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)

1.2

1.3 

1.5 

1.7 

2.0

6.0

9.0

18

30

57

2.-5 

3.0 

3.5 

4.0

109

167

237

380

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

IB

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

11

11

11

11

14

15

14

14

14

14

*15

14

14

14

13

13

13

13

13

13

14

17

18

16

16

14

14

16

17

18

16

440

14.2

873

Nov.

14

13

16

17

16

14

13

*16

17

23

13

9

7

6

5

4

5

8

12

17

16

15

15

15

15

15

15

14

13

13

391

13.0

776

Dec.

13

13

13

13

13

13

13

14

14

14

15

15

14

13

13

13

14

15

*16

17

20

50

100

70

40

15

12

10

10

1011

626

20.2

1,240

Jan.

11

12

13

i&

15

14

14

13

12

12

*12

12

12

11

11

11

11

11

11

11

11

11

11

12

11

10

10

10

10

9

9

358

11.5

710

Feb.

8

8

8

9

10

11

11

10

10

10

10

10

10

10

9

B

10

11

12

*13

14

13

13

12

12

12

12

12

13 ------

311

10.7

617

Mar.

13

13

13

13

13

12

12

12

12

11

To" 10

11

12

12

13

15

IB

20

25

30

35

40

50

60

55

50

55

60

70

60

835

26.9

1,660

Apr.

40

*30

25

30

40

34

34

50

126

150

100

85

97

101

98

98

122

83

74

81

94

101

90

81

70

62

57

56

52

* 49_

2,210

73.7

4,380

May

44

47

52

54

55

47

12.

59

76

99

111

109

106

88

81

96

138

171

215

253

268

283

*264

259

227

203

196

162

138

120

105

4,169

134

8,270

June

91

90

70

80

74

60

49

41

35

34

32

26

29

*28

36

iil

82

50

42

46

59

44

37

45

36

29

26

24

22

22

1,460

48.7

2,900

July

22

24

45

43

42

45

32

26

25

26

64

*31

29

33

37

28

28

32

30

28

26

25

25

23

20

20

20

11

20

18

17

901

29.1

1,790

Aug.

18

17

17

16

16

17

17

17

16

16

16

14

14

13

11

11

8.7

.8

.5

* .5

7

7

10

12

11

10

10

10

375.5

12.1

745

Sept.

10

10

10

10

10

10

10

9

9

9

9

9

9

9

9

9

*9.0

9.0

8.7

9.0

9.0

9.4

9.8

9.8

10

9.8

10

12

12

12

290.5

9.68

576

Calendar year!955 : Max 247 Mln 3 Mean 30.6 Ac-ft 22,150

Water year 1955-56 : Max 283 Mln 4 Mean 33.8 Ac-ft 24,540

Peak discharge (base. 160 cfs). Apr. 9 (8:30 p.m.) 273 cfs (3.64 ft); May 22 (12 m. to 1 p.m.) 297 

cfs (3.82 ft) .

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 11 to Apr. 5 (no gage-height record Nov. 13- 

17, Mar. 22-28). No gage-height record Aug. 21 to Sept. 16; discharge estimated on basis of 2 discharge measurements, weather records, and records for Blackfoot River near Ovando.
196 FEND OREILLE RIVER BASIN

Blackfoot River near Ovando, Mont.

Location. Lat 47°01'10", long 113°13'40", in SE^NW^ sec. 34, T. 15 N., R. 13 W., on left 

bank a quarter mile upstream from Monture Creek and 5 miles west of Ovando.

Drainage area. 1,274 sq mi.

Records available.--September 1940 to September 1956.

Gage. Water-stage recorder. Datum of gage is 3,917.27 ft above mean sea level, datum of 

1929 (Corps of Engineers benchmark).

Average discharge. 16 years, 864 cfs (625,500 acre-ft per year).

Extremes.--Maximum discharge during year, 6,340 cfs May 24 (gage height, 5.93 ft); minimum daily, 160 cfs Mar. 11, 12.

1940-56: Maximum discharge, 14,600 cfs June 4, 1953 (gage height, 8.45 ft); minimum daily, 100 cfs Jan. 20, 1954.

Ploodmarks indicate a stage of 10 ft reached in recent years.

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

which are poor. Diversions for irrigation of about 25,000 acres above station.

Revisions (water years). WSP 1216: Drainage area. WSP 1246: 1941.

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

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

2.3 345 4.0 2,060 

2.5 445 5.0 4,160 

3.0 8OO 6.O 6,560 

3.5 1,340 

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

350

35O

360

360

360

360

360

370

370

370

*370

370

370

365

360

360

365

365

360

360

360

350

350

350

350

350

360

370

390

400 

390

11,275

364

0.286

0.33

22,360

Nov.

390

370

370

390

40O

410

390

*385

395

415

410

180

180

210

230

260

280

300

320

320

310

300

300

290

300

310

300

280

270

260

9,525

318

0.250

0.28

18,890

Dec .

260

250

250

250

240

240

240

240

240

240

240

250

260

240

220

220

230

250

*270

290

300

350

400

600

500

400

350

300

280

270 

270

8,940

288

0.226

0.26

17,730

Jan.

280

320

360 iza 360

340

330

320

320

320

*310

300

300

290

290

280

280

280

290

290

300

310

320

300

270

250

230

220

210

210 

200

9,050

292

0.229

0.26

17,950

Feb.

"200 200

210

220

240

260

280

290

280

270

270

280

270

250

240

240

250

270

280

*290

290

280

270

260

260

260

240

230

220

7,400

255

0.200

0.22

14,680

Mar.

220

210

210

210

210

2OO

200

200

200

180

160

Teo

200

220

210

200

200

210

220

220

26O

360

700

1,100

1,220

1,100

782

588

*542

560 

602

11,854

382

0.300

0.35

23,510

Apr.

548

467

467

506

500

450

445

425

435

484

506

494

500

536

574

638

755

782

782

820

1,000

1,200

1,260

1.270

1,210

1,160

1,130

1,100

1,060

*1,030

22,534

751

0.589

0.66

44,700

May

1.000

1,010

1,010

1,020

1,020

1,030

1,040

1,080

1,380

1,560

1,760

1,820

1,800

1,760

1,760

2,030

2,760

3,700

4,470

5,070

5,770

6,100

*6,130

6.270

6,200

6,080

5,910

5,670

5,600

5,240

5,050

102,100

3,294

2.59

2.98

202,500

June

5,170

5.650

5,360

5,260

5,050

4,330

3,560

3,120

3,120

3,260

3,300

3,060

2,800

*2,600

2,660

3,490

3,780

3,300

2,900

2,720

2,620

2,380

2,150

2,150

2,150

1,950

1,770

1,670

1,590

1.490

94,410

3,147

2.47

2.76

187,300

July

1,420

1,380

1,490

1.610

1,460

1,400

1,330

1,240

1,160

1,120

1,160

*1,150

1,090

1,030

1,010

1,000

950

910

880

840

810

782

746

719

694

678

670

662

686

662 

654

31,393

1,013

0.795

0.92

62,270

Aug.

654

662

702

686

654

630

630

623

616

609

602

595

581

565

554

530

518

506

494

*494

484

478

462

445

43i

440

450

456

456

462 

456

16,924

546

0.429

0.49

33,570

Sept.

445

435

435

430

425

420

420

425

420

405

395

395

380

385

370

560

*360

365

365

360

360

360

365

370

365

360

360

365

375

385

11,660

389

0.305

0.34

23,130

Calendar year 1955: Max 4,350 Min 160 Mean 782 Cfsm 0.614 In. 8.35 Ac-ft 566,000

Water year 1955-56: Max 6,270 Min 160 Mean 921 Cfsm 0.723 In. 9.85 Ac-ft 668,600

Peak discharge fbase. 1.600 efs). May 24 (8 to 11 a.m.) 6,340 cfs (5.93 ft); June 17 (1 to 6 a.m.) 

3,870 cfs (4.90 ft).

Discharge measurement made on this day. 

Note. --Stage-discharge relation affected by Ice Nov 12 to Mar. 23 (no gage-height record Jan. 15

to Feb. 19; discharge estimated on basis of 2 discharge measurements, weather records, and records 

for nearby stations). Ho gage-height record Oct. 1-10, Oct. 19 to Nov. 7, Aug. 14; discharge estimated on basis of 2 discharge measurements, weather records, and records for stablon near Bonner.
PEND OREILLE RIVER BASIN 

Blackfoot River near Bonner, Mont.

197

Location.--Lat 46°53 I 50", long 113°45'20", near center sec. 9, T. 13 N., R. 17 W., on 

right bank 5 miles northeast of Bonner, 5 miles downstream from Union Creek, and 

7 miles upstream from mouth. Prior to Oct. 1, 1955, at site 1.3 miles downstream.

Drainage area. 2,290 sq mi.

Records available.--July 1898 to September 1901, May 1903 to October 1905, October 1939 to 

September 1956. Published as Blackfoot River at Bonner 1898-99 and as Big Blackfoot 

River near Bonner 1903-5.

Gage.--Water-stage recorder. Datum of gage is 3,344.76 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. July 7, 1898, to June 30, 1901, May 15, 1903, 

to Oct. 31, 1905, chain gage at site 7 miles downstream at different datum. Oct. 4, 

1939, to Sept. 30, 1955, staff gage at site 1.3 miles downstream at datum 21.82 ft 

lower.

Average discharge.--20 years (1899-1901, 1903-4, 1939-56), 1,579 cfs (1,143,000 acre-ft 

per year).

Extremes.--Maximum discharge during year, 12,100 cfs May 22 (gage height, 8.69 ft); minimum, 371 cfs Nov. 13 (gage height, 1.77 ft).

1898-1901, 1903-5, 1939-56: Maximum discharge, 18,300 cfs June 4, 1953 (gage height, 

11.65 ft, from graph based on gage readings, site and datum then in use); minimum 

daily, 200 cfs Jan. 4, 5, 1950, but may have been less during periods of no gage-height 

record.

Remarks. Records good except those for period of ice effect, which are poor, 

for irrigation of about 35,000 acres above station.

Revisions.--WSP 1216: Drainage area.

Diversions

Rating table, water year 1955-56, except period of Ice effect (gage 

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

1.8 

2.0 

2.5 

3.0 

4.0

380

460

720

1,120

2,230

5.0 

6.0 

7.0 

8.0

3,730

5,480

7,580

10,100

11,800

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

Z2

23

24

Z5

26

27

28

29

30 

31

Total

Mean

Cf sm

In.

Ac-ft

Oct.

654

648

642

630

630

624

624

624

618

618

*630

624

624

624

618

612

612

606

612

606

612

612

606

600

612

606

600

606

618 

648

660

19,260

621

0.271

0.31

38,200

Nov.

648

618

624

636

660

660

642

636

642

678

702

570

412

420

430

440

500

600

650

650

640

630

630

630

630

650

650

*640

640

640

18,198

607

0.265

0.30

36 , 100

Dec .

620

610

600

590

580

570

570

560

560

570

580

600

580

550

530

520 5~20"

520

530

550

580

650

700

800

850

800

750

700

670

660 

660

19,130

617

0.269

0.31

37,940

Jan.

660

680

720

*750

770

780

780

780

780

760

750

750

750

740

720

700

680

660

640

620

610

600

610

610

620

580

 510

490

470

460 

450

20,480

661

0.289

0.33

40,620

Feb.

450

450

460

480

500

520

540

550

550

540

540

530

530

520

500

490

490

500

520

560

600

620

620

*610

600

600

600

590

580

-----

15,640

539

0.235

0.25

31,020

Mar.

580

580

570

570

560

560

550

550

540

540

530

520

540

550

540

530

530

530

540

550

600

700

998

1,560

2,050

2.160

*ll720

1,360

1,240

1,270 

1,430

26,048

840

0.367

0.42

51,670

Apr.

1,390

1,250

1,210

1,280

1,300

1,210

1.160

1,160

1,160

1,300

1,500

1,560

1,680

1,910

2,190

2,640

3,490

3,830

3,910

4,140

4,590

5,090

5^.220

5,200

4,950

4,620

*4,370

4,180

3,940 

3,760

85,190

2,840

1.24

1.38

169,000

May

3,550

3,440

3,380

3,300

3,220

3,120

5.070

3,310

3,890

4,400

4,800

4,890

4,790

4,590

4,480

4,840

5,900

*7 , 340

8,660

9,700

*1 1,000

11.800

11,700

11,700

11,700

11,200

10,800

10,200

9,960 

9,340

8,900

212,970

6,870

3.00

3.46

422,400

June

8,950

9.830

9,810

*9,310

9,050

8,010

6,790

5,940

5,620

5,760

5,880

5,580

5,110

4,750

4,660

5,560

6,400

5,740

*5,110

4,820

4,660

4,320

3,940

3,870

3,860

3,570

3,280

3,100

2,940 

2 t 770

168,990

5,633

2.46

2.74

335,200

July

2,620

2,510

2,740

5.010

2,720

2,550

2,410

2,260

2,110

2,010

1,970

1,980

1,860

1,790

1,720

1,710

1,630

1,560

1,520

1,480

1,430

1,370

*1,320

1,260

1,230

1, 190

1,160

1,140

1,160 

1,140

1.120

55,680

1,796

0.784

0.90

110,400

Aug.

1,130

1,140

1.170

1,150

1,110

1,080

1,060

1,060

1,040

1,020

1,010

990

982

958

934

910

886

862

838

822

806

798

776

762

741

741

*783

769

769 

776

769

28,652

924

0.403

0.47

56,830

Sept.

755

734

720

720

714

708

702

690

690

678

660

660

642

630

618

606

600

600

600

600

595

595

595

595

595

*595

595

600

612

612

19,316

644

0.281

0.31

38,310

Calendar year 1955 : Max 7,060 Mln 412 Mean 1,453 Cfsm 0.634 In. 8.60 Ac-ft 1,052,000

Water yearl955-56 : Max 11,800 Mln 412 Mean 1,884 Cfsm 0.823 In. 11.18 Ac-ft 1,368,000

Peak discharge (base. 2.500 cfs).--Mar 26 (7 a.m.) 2,510 cfs (4.20 ft); Apr. 23 (3 to 5 a.m.) 

,270 cfs (5.89 ft); May 22 (1:30 p.m.) 12,100 cfs (8.69 ft); June 17 (7 to 8 a.m.) 6,520 cfs (6.52 tl. ft).

 Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 14 to Mar. 22.
198 FEND OREILLE RIVER BASIN 

Clark Fork above Missoula, Mont.

Location. Lat 46°52'40", long 113°55'40", in NWvNWv sec. 19, T. 13 N., R. 18 W., on right 

bank 3 miles downstream from Blackfoot River and 3 miles east of Missoula.

Drainage area.--5,999 sq mi.

Records available.--March 1929 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 3,230 ft (from topographic map).

Average discharge.--27 years, 2,768 cfs (2,004,000 acre-ft per year).

Extremes.--Maximum discharge during year, 21,200 cfs May 23 (gage height, 10.27 ft); minimum daily, 600 cfs Feb. 1.

1929-56: Maximum discharge, 31,500 cfs May 23, 1948 (gage height, 13.07 ft); minimum, 

115 cfs Oct. 25, 1943 (gage height, 0.64 ft, powerplant shutdown); mumimum daily, 

340 cfs Sept. 27, 1937.

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

Diurnal fluctuation caused by powerplant at Bonner. Diversions for irrigation of about 

120,000 acres above station.

Revisions (water years).--WSP 1042: 1936. WSP 1152: 1942. WSP 1246: Drainage area. 

1929-30, 1935.

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 Mar. 24 to Apr. 23)

Oct. 1 to Apr. 23 Apr. 24 to Sept. 30

2.0 630 4.0 3,230 2.5 1,200 7.0 10,500

2.5 1,060 7.0 10,000 3.0 1,820 10.5 22,000

3.0 1,680 4.0 3,400

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.

1,610

1,610

1,570

1,540

1,570

1,570

1,590

1.650

1,530

1,570

1,570

1,570

1,570

1,590

1,570

1,530

1,510 

1,510

1.490

1,510

1,490

1,510

1,520

1,540

*1,520

1,510

1,520

1,510

1,540

1,610

1,630

48,110

1,552

95,420

Nov.

1,610

1,570

1,540

1,630

1,760

1,780

1,710

1,650

1,650

1,760

1,850

1,610

1,100

950

850

800

850 

1,000

1,400

1,700

1.900

1,850

1,750

1,650

1,600

1,700

1,650

*1,600

1,550

1,550

45,570

1,519

90,390

Dec.

1,600

1,600

1,600

1,570

1,390

1,350

1,400

1,350

1,350

1,450

1,500

1,760

1,550

1,430

1,300

1,200

1.150 

1,150

1,300

1,860

2,220

2,990

5.310

4,800

3,790

3,350

3,150

2,900

2,600

2jlOO

1,800

63,870

2,060

126,700

Jan.

1,700

1,750

1,850

*1,900

1,950

1,900

1,800

1,750

1,700

1,650

1,600

1,600

1,600

1,550

1,550

1,450

1,400 

1,450

1,450

1,450

1,500

1,500

1,500

1,450

1,300

1,000

700

*850

850

800

700

45,200

1,458

89,650

Feb.

600

650

750

900

1,100

1,250

1,350

1,300

1,250

1,200

1,250

1,300

1,300

1,200

1,100

950

1,000 

1,050

,100

,150

,250

,350

.500

,450

,400

,350

,300

1,350

1,350

34,050

1,174

67,540

Mar.

1,400

1,500

1,480

1,440

1,390

1,420

1,420

1,340

1,340

1,330

1,210

1.160

*1,210

1,390

1,280

1,290

1,440 

1,630

2,120

2,620

2,970

3,320

4,860

6,720

7,430

7.480

*5,610

4,040

3,690

3,780

4,120

83,430

2,691

165,500

Apr.

3,790

3,400

3,200

3,250

3,230

3,090

2,940

2.890

2,930

3,150

3,550

3,780

3,870

4,170

4,680

5,250

6,770 

7,390

7,300

7,330

8,170

9,160

9.640

9,630

9,330

8,640

*8,060

7,720

7,320

6,930

170,560

5,685

338,300

May

6,570

6,310

6,150

6,040

5,990

5,830

5.710

6,310

7,320

8,250

9,000

9,030

8,660

8,250

7,960

8,350

9,680 

11,800

14,400

16,600

*18,600

19 , 800

20, 200

20,400

20 . 600

19,500

18,800

18, 100

17 , 500

16,400

15,300

373,410

12,050

740,600

June

15,300

16,400

16.600

*15,400

14,800

13,400

11,400

9,820

9,090

9,030

9,090

8,660

7,960

7,360

7,220

8,200

10,300 

9,090

*7,940

7,520

7,520

7,290

6,310

6,240

6,400

5,870

5,360

5,010

4,750

4,470

273,800

9,127

543,100

July

4,160

4,060

4,680

5.230

4,830

4,580

4,330

4,020

3,800

3,590

3,480

3,460

3,330

3,180

3,150

3,080

3,060 

3,080

2,690

2,600

2,380

2,490

*2,310

2,240

2,140

2,140

2,070

1.990

2,090

2,120

2,120

98,480

3,177

195,300

Aug.

2,130

2,160

2.200

2,190

2,100

2,030

1,990

2,030

2,000

1,970

1,930

1,890

1,860

1,810

1,740

1,720

1,680 

1,620

1,570

1,550

1,510

1,480

1,450

1,430

1,390

1.380

*1,490

1,500

1,570

1,650

1,680

54,700

1,765

108 , 500

Sept.

1,650

1,620

1,570

1,590

1,570

1,570

1.740

1,590

1,340

1,510

1,450

1,460

1,440

1,430

1,420

1,380

1,360 

1,360

1,360

1,360

1,360

1,340

1,370

1,370

1,340

*1,330

1.320

1,330

1,380

1,420

43,330

1,444

85,940

Calendar year 1955 : Max 11,900 Min 800 Mean 2,908 Ac-ft 2,106,000

Water year 1955-56 : Max 20,600 Min 600 Mean 3,646 Ac-ft 2,647,000

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice 

Mar. 2.

13 to Dec. 3, Dec. 6-11, 15-19, Dec. 27 to
PEND OREILLE RIVER BASIN 199

West Pork Bitterroot River near Conner, Mont.

Location. Lat 45°44', long 114°17', in NE^NW^ sec. 26, T. 1 S., R. 22 W., on right bank 

half a mile downstream from West Pork Dam, 6 miles upstream from Nez Perce Creek, and 

16 miles southwest of Conner.

Drainage area.--317 sq mi.

Records available.--Apr11 1941 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,560 ft (by barometer).

Average discharge.--15 years, 297 cfs (215,000 acre-ft per year).

Extremes.--Maximum discharge during year, 3,260 cfs May 23 (gage height, 5.52 ft); minimum, 31 cfs Sept. 9 (gage height, 0.88 ft).

1941-56: Maximum discharge, 4,060 cfs May 9, 1947 (gage height, 6.18 ft); minimum, 

0.2 cfs Nov. 25, 1942.

Remarks.--Records good. Plow regulated by West Pork Bitterroot River Reservoir (see 

p. 238). Diversions for irrigation of about 200 acres above station.

Revisions. WSP 1246: Drainage area.

Rating table, water year 1955-56 (gage height, In feet, and

discharge. In cubic feet per second) 

(Shifting-control method used Oct. 11 to Nov. 1, May 15-19)

1.1

1.3 

l.G 

2.0

58

93

165

295

2.5 

3.0 

4.0 

5.5

525

790

1,560

3,190

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.

267

?6T

264

264

264

260

260

260

260

260

187

65

^6

66

68

68

70

70

72

72

73

73

73 

73

73

*73

73

73

73

75

75

4,237

137

8,400

Nov.

75

75

75

75

77

77

77

77

77

77

79

79

79

79

79

80

80

80

80

80

80

80

82 82"

82

82

82

82

*82

82

2,373

79.1

4,710

Dec.

82

82

82

82

82

82

82

82

82

.82

82

82

82

82

82

82

82

82

82

82

82

82

82 

82

82

82

82

82

82

82

QOD£

2,542

82.0

5,040

Jan.

82

82

82

82

82

*82

82

82

82

82

82

82

82

82

82

82

82

82

82

82

82

82

82 

82

82

82

82

82

 82

82

82

2,542

82.0

5,040

Feb.

8282-

82

82

82

82

82

82

84

82

82

82

8686-

86

86

86

86

86

86

86

86

86 

86

86

*86

86

86

86

-

2,448

84.4

4,860

Mar.

8686-

86

86

86

86

86

86

84

8l

84

84

84

84

84

84

84

84

84

84

84

84

84 

84

84

84

84

84

*84

84

84

2,620

84.5

5,200

Apr.

Tso" 108

198

195

229

214

198

237

295

295

295

303

430

590

730

880

938

856

850

973

1,270

1,480

1.620 

1,380

1,380

1,200

1,090

1,040

 994

917

21,565

719

42,770

May

838

774

746

75?

774

808

892

1,060

1,220

1,370

1,410

1,270

1,130

1,010

959

1,040

1,350

1,900

 2,450

2,830

3,100

*3,160

3,166 

3,100

2,800

2,680

2,630

2,390

2,200

2,110

2,130

54,043

1,743

107 ,200

June

2.200

2,196

1,970

1,790

*1,590

1,360

1,150

1,020

980

966

938

874

820

762

730

762

708

636

585

 590

575

530

490 

490

470

430

398

376

353

33J5

27,068

902

53,690

July

331

327

366

347J

315

295

278

267

257

250

247

250

240

240

224

211

198

186

183

180

183

174

162 

*157

154

146

135

152

154

154

149

6,916

223

13,720

Aug.

143

136

136

131

131

131

136

133

126

121

116

149

131

114

131

138

138

136

110

11

99

99

101 

101

101

104

104

*120

143

152

157

3,867

125

7,670

Sept.

157

T5T

157

157

157

157

157

157

98

73

73

73

73

73

73

73

73

73

73

73

73

73

73 

73

73

73

*99

124

124

124

3,066

102

6,080

Calendar year 1955 : Max 1,970 Mln 50 Mean 263 Ac-ft 190,600

Water year 1955-56: Max 3,160 Mln 65 Mean 364 Ac-ft 264,400

* Discharge measurement made on this day. 

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

period.

5; no range In stage, discharge constant during

467Z40 O -58 -14
200 FEND OREILLE RIVER BASIN

East Fork Bitterroot River near Conner, Mont.

Location.--Lat 45°53'00", long 114°03'50", in NEi;- sec. 34, T. 2 N., R. 20 W., on right 

bank 10 ft below private bridge, 4j miles southeast of Conner, and 5 miles upstream 

from confluence with West Fork.

Drainage area.--381 sq mi.

Records available.--April to September 1956.

Gage. Water-stage recorder. Datum of gage is 4,191.81 ft above mean sea level, datum of 

T929, Pacific Northwest supplementary adjustment of 1947.

Extremes.--Maximum discharge during period, 3,000 cfs May 25 (gage height, 6.44 ft); minimum, 88 cfs Sept. 19, 20, 24-27 (gage height, 2.83 ft).

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

poor. Some diversion for- irrigation above station.

Rating tables, Apr. 1 to Sept. 30, 1956 (gage height, in feet, and discharge, 

ir. cubic feet per second)

Apr. 1 to May 24 May 25 to Sept. 30

3.5 

4.0 

4.5

270

485

825

5.0 

6.5

1,300

3,190

2.8 

3.1 

3.5 

4.0

82

148

270

480

4.5 

5.0 

6.5

695

1,110

3,100

Discharge, In cubic feet per second, April to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

13

19

20

21

22

23

24 

25

26

27

28

29

30

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct. Nov. Dec. Jan. Feb.

------

Mar. Apr.

a!85 

alSO

a!75

a!65

alSO

a!30

aT4T

a!60

a!70

a200

a260

280

302

341

394

435

480

430

445

515

630

753

793

759" 825 

681

651

623

*577

553

12,357

412

1.08

1.21

24,510

May

525 

'555" 500

510

515

520

577

705

825

937

919

850

777

721

721

817

1,030

1,310

*1,670

2,090

*2,410

2,640

2,760

2,850 

2,840

*2,640

2,540

2,360

2,240

2,120

2,170

44,594

1,439

3.78

4.35

88,450

June

2,520 

2,320

1,950

1,850

*1,680

1,390

1,170

1,090

1,090

1,080

1,020

936

867

828

823

1,010

880

773

713

*731

743

656

612

673 

629

558

520

485

448

450

30,280

1,009

2.65

2.96

60,060

July

412 

440

?62~ 552

430

408

381

354

333

309

305

302

291

294

28C

263

246

232

221

214

224

200

195

*184 

173

166

TTT

184

197

184 

173

8,782

283

0.743

0.86

17,420

Aug.

181 

178

200

TST

173

170

170

163

158

156

153

146

136

129

131

126

122

113

111

109

106

102

100

T5o

104

106

141

*138

129

145 

151

4,506

159

0.565

0.42

8,540

Calendar year : Max Min Mean Cfsm In. Ac-ft

Sept.

TT5" 120 

109

109

111

109

106

111

109

106

104

104

106

104

100

98

96

94

92

90

92

94

90

90 

90

90

*92

109

115

109

3,060

102

0.268

0.30

6,070

Water year : Max Min Mean Cfsm In. Ac-ft

Peak discharge (base. 700 cfs) . Apr. 24 (7 to 8 a.m.) 85O cfs (4.55 ft); May 10 (2 to 10 a.m.) 

946 cfs (4.64 ft); May 25 (9 a.m.) 5,000 cfs (6.44 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for East Pork Bitterroot River 

at Conner, Mont.
PEND OREILLE RIVER BASIN 201

East Fork Bitterroot River at Conner, Mont.

Location.--Lat 45°56'00", long 114°07'30", in SE^SE^- sec. 7, T. 2 N., R. 20 W., on right

 bank 200 ft downstream from highway bridge at Conner and half a mile upstream from 

confluence with West Fork.

Drainage area.--405 sq mi.

Records available.--September 1910 to September 1916, fragmentary (gage heights only

 during 1918J. April 1937 to September 1956. Published as "near Darby" 1910-16.

Sage. Wire-weight gage read once or twice daily. Datum of gage is 4,014.29 ft above 

mean sea level, datum of 1929, supplementary adjustment of 1947. Sept. 20, 1910, to 

Sept. 17, 1916, staff gage at site 2? miles upstream at different datum. Apr. 4, 

1937, to Sept. 30, 1953, wire-weight gages at several sites in immediate vicinity, all 

at datum 1.00 ft higher.

Average discharge.--19 years (1937-56), 257 cfs (186,100 aore-ft per year).

Extremes.--Maximum discharge during year, 2,990 cfs May 25; maximum gage height, 5.47 ft 

May 24, from graph based on gage readings; minimum daily discharge, 20 cfs Feb. 1.

1910-15, 1937-56: Maximum discharge, 3,760 cfs May 29, 1948; maximum gage height, 

6.78 ft May 9, 1947, present datum; minimum discharge observed, 1.4 cfs Aug. 17, 1937.

Remarks.--Records good except those for periods of ice effect and those for May 20 to 

June 3, which are poor. Diversions for irrigation of about 3,000 acres above station.

Revisions (water years).--WSP 1216: Drainage area. WSP 1246: 1912.

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 Mar. 16-31, May 8-19,

21-30, June 1, 2)

Oct. 1 to May 24 May 25 to Sept. 30

1.6 

1.9 

2.2 

2.5

130

233

3.0 

4.0 

5.0 

6.5

465

1,100

1,920

3,270

1.3 

1.6 

2.0

135

300

3.0 870

4.0 1,530

5.6 2,900

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

Day

1

2

3

4

5

6

7

8

9

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.

 §6 81

96

89

94

102

96

96

104

98

104

102

96

96

96

91

91

89

85

89

89

89

96

96

94

*91

94

100

100

117

TTf

2,974

95.9

0.237

0.27

5,900

Nov.

89

89

112

136

151

130

114

94

112

122

170

87

39

30

27

25

BT

100

145

175

155

140

125

115

110

120

114

110

*109

102

3,202

107

0.264

0.29

6,350

Dec.

100

102

95

85

75_

115

115

110

115

110

125

154

142

91

75

80

85

90

100

167

352

509

415

365

300

241

258

215

150

115

120

5,171

167

0.412

0.47

10,260

Jan.

130

135

140 T4~0~

120

*100

95

90

85

90

90

85

90

80

80

90

85

80

75

75

75

75

70

65

50

30

35

40

*60

50

25.

2,530

81.6

0.201

0.23

5,020

Feb.

20

30

45

60

80

~85 100

90

90

85

85

80

70

65

60

50

60

85

85

75

75

80

80

70

70

*70

70

70

70

2,055

70.9

0.175

0.19

4,080

Mar.

70

75

70

70

65

60

65

75

70

65

50

BT

60

70

75

78

83

85

100

98

100

125

170

210

262

311 236"

178

*181

195

203

3,624

117

0.289

0.33

7,190

Apr.

188

181

178

170

160

133

1ST

160

170

222

284

293

306

360

430

509

570

504

509

564

689

832

851

884

786

734

708

689

 653

605

13,473

449

1.11

1.24

26,720

May

581

553

542

531

?4T

548

593

714

812

932

918

851

799

740

728

812

981

1,270

*1,690

2,140

2,600

2,700

2,800

2,910

2,900

2,700

2 , 600

2,400

2,300

2 ,200

2 200

45,587

1,471

3.63

4.19

90,420

June

2,400

2,350

2,000

1,920

*1,780

* ,470

,260

,170

,140

,100

1,040

994

948

890

857

1,120

928

838

769

*751

799

625

625

680

655

577

532

510

450

400

31,578

1,053

2.60

2.90

62,630

July

385

365

543

460

422

395

370

355

335

300

291

291

273

268

246

228

219

202

186

182

190

166

166

*160

160

146

138

152

152

142

124

8,012

258

0.637

0.74

15,890

Aug.

132

132

160 14"6

135

128

124

124

121

97

110

100

100

97

94

94

92

92

86

86

83

86

83

80

70

80

*100

94

83

100

94

3,203

103

0.254

0.29

6,350

Sept.

83" 89

78

75

75

78

72

80

75

75

72

72

72

72

72

70

67

67

67

64

64

67

64

62

6¥

*64

67

75

75

78

2,155

71.8

0.177

0.20

4,270

Calendar year 1955: Max 1,450 Min 25 .Mean 256 Cfsm 0.632 In. 8.55 Ac-ft 185,000

Water year 1955-56: Max 2,910 Min 20 Mean 338 Cfsm 0.835 In. 11.34 Ac-ft 245,100

Peak discharge (base, 700 efs). Apr. 24 (8 a.m.) 918 cfs (3.80 ft)j May 10 (7 to 8 a.m.) 953 cfs 

(3.90 ft); May 25 (9 a.m.) 2,990 cfs (5.40 ft). 

* Discharge measurement made on this day. 

Note_.--Stage-discharge relation affected by Ice Nov. 14-25, 28, Dec. 3-11, 15-18, Dec. 28 to Mar. 15.
202 PEND OREILLE RIVER BASIN 

Bitterroot River near Darby, Mont.

Chaffin Creek, and 4 miles southeast of Darby. 

Drainage area.--1,049 sq mi. 

Records available.--April 1937 to September 1956.

Gage.-Water-stage recorder. Datum of gage is 3,943.14 ft above mean sfelejel, datum 

<Jf 1929, supplementary adjustment of 1947. Prior to Aug. 2, 1939, wire-weight gage 

at highway bridge 25 ft upstream at same datum.

Average discharge . 19 years, 900 cfs (651,600 acre-ft per year).

Extremes.-Maximum discharge during year, 10,500 cfs May 24 (gage height 7 85 ft); mini-

 iUm7~198 cfs Nov. 16, Feb. 1, but may have been less during other periods of ice

6ff1937-56: Maximum discharge, 11,500 cfs May 9, 1947 (gage height, 8.18 ft); minimum observed, about 71'cfs Feb. 9, 1939; minimum gage height observed, 1.06 ft 

Dec. 9, 1937.

Remarks.--Records good except those for periods of ice effect, which are poor. Some reg-

 uTaTion by West Fork Bitterroot River Reservoir (see p. 238). Diversions for irrigation of about 5,000 acres above station. Ditch bypassing station irrigates about 

500 acres below.

Revisions. WSP 1246: 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 May 17-20)

Oct. 1 to May 23 May 24 to Sept. 30

1.6 

2.0 

2.5 

3.0

195

3 SO

675

1,080

4.0 

5.0 

6.0 

8.0

2,200

3,740

5,700

10,800 2.5

3.0

205

315

575

930

1,400

4.0 

5.0 

6.0 

8.0

2,660

4,260

6,300

11,000

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

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

26

29

30 

31

Total

Mean

Ac- ft

Oct.

422

422

422 

422

452

446

440

440

440

452

452

302

282

278

270

266

258

250

'555 246

250

254

258

258

250

*246

246

250

258

306 

306

10,094

326

20,020

Nov.

274

262

282 

302

355

294

290

274

294

544

615

395

b290

b270

b250

b240

b280"

350

390

416

400

360

335

330

330

350

350

330

*325

310

10,087

336

20,010

Dec.

315

315

306 

290

262

310

310

294

298

286

298

360

340

274

254

b255

b260

b270

320

350

410

735

£75" 870 

565

524

494

428

370

310 

b330

11,678

377

23,160

Jan.

b37o

b380

385 315"

370

*340

335

330

310

320

315

302

310

298

306

315

302

294

290

286

286

286

282 

270

238

230

266

266

 266

258 

b220

9,411

304

18,670

Feb.

b200

b22"o

b240 

b270

286

298

278

282

278

266

266

262

254

246

b230

b220

b240

256

258

242

242

246

246 

234

234

 234

234

234

234

7,232

249

14,340

Mar.

238

242

238 

234

230

223

231

242

234

226

223

226

230

234

234

242

254

270

298

340

375

470

600 

790

1,010

1,110

910

742

 698

698 

690

12,985

419

25,760

Apr.

652 682"

698 

682

690

660

660

660

782

927

1,180

1,290

1,490

1,840

2,200

2,630

2,900

2,570

2,590

3,030

3,810

4,480

4,860 

4,700

4,030

3,530

3,270

3,160

*2,960

2,690

66,303

2,210

131,500

May

2,460

2,280

2,250 

2,236

2,230

2,290

2,540

3,030

3,390

3,810

3,740

3,370

3,000

2,640

2,520

2,780

3,540

4,980

*6,730

8,650

*9,340

9,560

9,610 

9.930

9, HO

8,350

8,330

7,570

7,140

7,960 

7,110

162,480

5,241

322,300

June

7,570

7,4lO

6,410 

6,170

*5,440

4,360

3,590

3,400

3,540

3,630

3,640

3,300

3,030

2,870

2,900

3,040

2,630

2,320

2,250

 2,450

2,310

1,980

1,850 

2,070

2,010

1,750

1,710

1,680

1,620

1,400

98,330

3,278

195,000

July

1,280

1,240

1,460 

1,310

1,220

1,190

1,140

1,080

1,040

1,030

1,040

993

922

939

866

810

735

687

661

635

674

623

581 

 551

521

504

5TO" 493

539

521 

498

26,293

846

52,150

Aug.

352" 510

488 

455

445

430

460

435

410

395

390

385

380

351

346

365

356

346

338

308

301

287

284 

277

271

280

360

*346

346

420 

385

11,632

375

23,070

Sept.

356 3*2"

338 

333

333

333

328

328

312

253

248

245

245

245

240

238

235

235

232

228

228

228

228 

228

225

223 *1?2"3~

268

277

274

8,049

268

15,960

Calendar year 1955: Max 6,080 Mln 180 Mean 885 Ac-ft 640,500

Water year 1955-56: Max 9,930 Mln 200 Mean 1,187 Ac-ft 861,900

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
PEND OREILLE RIVER BASIN 203

Blodgett Creek near Corvallis, Mont.

Location.--Lat 46°16'10", long 114° 14'10", in NW^NW^- sec. 21, T. 6 N., R. 21 W., on right 

bank 4 \ miles upstream from mouth and 7 miles southwest of Corvallis.

Drainage area.--26.4 sq ml.

Records available.--December 1946 to September 1956.

Gage.--Water-stage recorder. Altitude of gage Is 4,050 ft (from topographic map).

Average discharge.--9 years (1947-56), 74.0 cfs (53,570 acre-ft per year).

Extremes.--Maximum discharge during year, 813 cfs May 24 (gage height, 5.79 ft); minimum, 

1.6 cfs Mar. 8 (gage height, 1.94 ft).

1946-56: Maximum discharge, 836 cfs May 16, 1949 (gage height, 6.42 ft); minimum, 

1.2 cfs Nov. 9, 10, 23, 25, 1952; minimum gage height, 1.93 ft Nov. 9, 10, 1952.

Remarks. Records good except those for period of Ice effect, which are poor. Some regulatlon for Irrigation at low flow by High Lake and Blodgett Lake (combined capacity, 

900 acre-ft).

Revisions.--WSP 1216: Drainage area.

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

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

2.1 

2.3 

2.5 

2.8 

3.2

4.0

9.5

19

44

97

3.5 

4.0 

5.0 

5.5

149

258

550

714

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

Day

1

2

3

4

5

6

7

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-f b

Oct.

5.8

5.8

5.4

5.2

774

8.8

8.4

9.5

15

21

20

16

16

16

14

13

12

10

9.5

9.5

9.2

8.8

9.2

8.4

7.8

*7.4

7.4

8.1

8.8

17

15

341.4

11.0

0.417

0.48

677

Nov.

13

11 iz

16

22

16

16

16

16

70

60

41

41

32

25

25

b26

b30

34

34

29

26

24

23

22

22

22

20

*20

19

783

26.1

0.989

1.10

1,550

Dec.

18

18

18

16

b!5

b!5

16

16

16

15

16

30

28

22

b!9

b20

b!9

b!9

b20

22

33

120

-9T 158

78

67

60

54

50

b46

b43

1,184

38.2

1.45

1.67

2,350

Jan.

b40

bSTT

36

34

*32

30

29

28

25

26

25

23

24

22

22

22

21

20

20

19

18

18

18

17

15

16

18

*17

16

b!5

b!4

718

23.2

0.879

1.01

1,420

Feb.

b!3

b!3

b!4

b!4

b!5

T5" 17

13

13

12

12

12

12

12

11

blO

bll

12

11

10

10

10

9.5

9.5

*9.5

9.5

172" 9.2

9.2

______

337.6

11.6

0.439

0.48

670

Mar.

9.2

8.4

6.6

8.5

9.2

9.2

8.0

IT"5.1

8.8

b7

b8

8.4

8.1

7.8

6.7

8.1

10

13

15

16

20

29

42

54

60

BT

*44

42

41

40

617.1

19.9

0.754

0.87

1,220

Apr.

37

34

33

32

31

29

29

28

3T

40

53

56

71

99

136

176

157

133

140

192

258

315

309

269

217

206

195

*180

158

138

3,782

126

4.77

5.33

7,500

May

127

12O

113

105

10O

105

135

192

236

266

233

188

157

138

140

188

298

442

598

 657

'564" 707

598

704

*488

433

463

430

451

448

497

10,421

336

12.7

14.68

20,670

June

556

52?

412

427

346

*228

188

236

337

368

337

280

258

258

253

258

195

186

219

263

*203

16O

168

206

190

157

178

192

174

129

7,884

263

9.96

11.11

15,640

July

103

100

174

158

117

120

108

105

103

110

129

147

111

108

94

79

71

64

62

56

55

51

46

*40

37

34

31

28

28

26

2£

2,499

80.6

3.05

3.52

4,960

Aug.

23

22

20

18

16

16

16

32

30

28

28

27

25

24

24

24

22

11

8.4

7.8

21

22

21

21

21

23

 32

28

24

30

23

688.2

22.2

0.841

0.97

1,370

Sept.

20

T5

17

16

15

14

14

13

12

10

10

9.5

9.2

7.0

5.8

5.2

4.6

4.4

4.2

4.0

7.0

13

13

11

10

9.5

 9.5

14

13

14

326.9

10.9

0.413

0.46

648

Calendar year 1955: Max 565 Min 5.2 Mean 70.8 Cfsm 2.68 In. 36.38 Ac-ft 51,220

Water year 1955-56: Max 707 Min 4.0 Mean 80.8 Cfsm 3.06 In. 41.68 Ac-ft 58,680

Peak discharge (base, 450 cfs). May 21 (3 a.m.) 809 cfs (5.78 ft); May 24 (9 a.m.) 813 cfs 

(5.79 ft); June 1 (3:30 a.m.) 644 cfs (5.29 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
FEND OREILLE RIVER BASIN 

Burnt Fork Creek near Stevensville, Mont.

Location.--Lat 46°27'50'', long 113°56'40", in NW^SW^- sec. 11, T. 8 N., R. 19 W., on right 

Bank 150 ft upstream from county road bridge and 8 miles southeast of Stevensville.

Drainage area. 74.0 sq mi.

Records available.--May 1920 to August 1924, April 1938 to September 1956.

Gage.--Staff gage read once daily except Sundays and holidays. Altitude of gage is 4,270 

ft (from topographic map). May 8, 1920, to Aug. 23, 1924, staff gage at site 150 ft 

downstream at different datum. April 1938 to Mar. 18, 1953, staff gage and Mar. 19, 

1953, to Mar. 15, 1955, wire-weight gage, at site 150 ft downstream at datum 2.00 ft 

lower.

Average discharge.--18 years (1938-56), 49.6 cfs (35,910 acre-ft per year).

Extremes. Maximum discharge observed during year, 414 cfs May 24 (gage height, 3.72 ft); 

maximum gage height observed, 4.74 ft Feb. 1 (backwater from ice); minimum daily 

discharge, 13 cfs Mar. 11.

1920-24, 1938-56: Maximum discharge observed, 641 cfs May 28, 1938 (gage height, 

2.92 ft, site and datum then in use); maximum gage height observed, that of Feb. 1, 

1956; minimum daily discharge, 2 cfs Mar. 11, 1948.

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

which are poor. Diversion above station for irrigation of about 2,000 acres below 

station. During irrigation season natural flow of stream is augmented by release from 

Burnt Fork Lake (capacity, 510 acre-ft).

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

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

1.4 

1.6 

1.9 

2.2 68

2.5 

3.0 

3.5 

4.0

110

214

342

490

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

22

a22

22

22

20

20

20

20

a20

19

19

19

18

18

17

a!7

17

17

17

17

IS

16

alG

17

17

17

*17

17

17

a!7

17

567

18.3

1,120

Nov.

16

15

18

17

19

a!8

24

23

24

24

a28

b26

a24

b22

b!8

b!8

b22

b24

b26

a26

24

24

23

a22

21

21

a22

*2E

20

20

651

21.7

1,290

Dec.

20

20

20

a!9

blT.

b!8

b!8

b!8

b!8

b!7

aie

24

b22

b21

b2o

b!9

b2o

a!9

b!9

b20

25

55

53

35

a32

a28

26

b24

b23

b21

b22

731

23.6

1,450

Jan.

a23

a25

b26

b26

*25

b24

24

a22

b20

b22

b21

20

20

22

a2o

b20

b!9

b!9

21

El

20

a20

20

b20

b!9

b22

b23

*b24

a24

b23

b22

677

21.8

1,340

Feb.

b20

b21

b22

b23

a23

b24

b22

b21

b21

20

20

a!9

17

b!6

b!5

b!4

b!4

b!5

a!5

16

15

a!5

15

15

*15

a!5

15

15

15

-

513

17.7

1,020

Mar.

16

15

16

a!7

b!8

b!8

b!8

17

17

b!5

a!3

b!4

b!6

b!8

b!8

18

18

a!9

20

21

21

25

28

34

a40

46

37

*35

33

32

34

707

22.8

1,400

Apr.

a32

30

30

28

28

26

25

a25

25

31

42

40

44

54

a64

75

107

97

91

105

130

al70

165

161

132

119

112

*108

a95

88

2, £79

76.0

4,520

May

84

80

78

73

73

a80

88

144

152

158

150

130

al!9

108

102

134

176

233

294

*310

331

339

350

*408

364

348

3360

350

334

a320

315

6,585

212

13,060

June

331

359

a340

312

302

*258

219

209

209

a230

212

198

184

167

167

231

a210

191

173

187

*182

161

150

a!60

142

128

121

119

108

102

6,062

202

12,020

July

a85

94

140

allO

96

93

86

a84

81

76

72

66

57

58

a55

52

51

49

48

46

44

a48

53

*50

50

53

51

49

a48

47

45

2,037

65.7

4,O4O

Aug.

44

15

44

44

a42

40

38

37

37

35

34

a33

32

30

30

30

30

30

a29

28

32

35

34

34

34

a35

*37

35

34

35

34

1,091

35.2

2,160

Sept.

34

a32

a29

26

25

25

24

24

a23

22

22

2E

21

21

20

a2o

20

20

20

20

22

20

a2o

2o

20

20

*20

22

21

a23

678

22.6

1,340

Calendar year 1955 : Max 284 Mln 12 Mean 53.7 Ac-ft 38,91o

Water year 1955-56 : Max 408 Mln 13 Mean 61.7 Ac-ft 44,76O

Discharge measurement made on this day.

No gage-height record; discharge Interpolated or estimated on

b Stage-discharge Stage relation affected by Ice.

basis of records for nearby stations.
FEND OREILLE RIVER BASIN 205

Lolo Creek above Sleeman Creek, near Lolo, Mont.

Location Lat 46°45', long 114°09', in NW£ sec. 5, T. 11 N., R. 20 W., on left bank 3 miles 

west (corrected) of Lolo and 4 miles upstream from mouth.

Drainage area. 250 sq mi.

Records available.--November 1950 to September 1956. Prior to October 1954, published as 

Lolo Creek near Lolo. April 1911 to September 1915 at site 3^ miles upstream, published 

as near Lolo ; records not equivalent owing to diversion and tributary inflow.

Gage. Water-stage recorder. Altitude of gage is 3,290 ft (from topographic map). 

Average discharge. 5 years (1951-56), 224 cfs (162,200 acre-ft per year).

Extremes.--Maximum discharge during year, 2,430 cfs May 24 (gage height, 6.24 ft); minimum, 

28 cfs Mov. 2 (gage height, 1.34 ft).

1950-56: Maximum discharge, that of May 24, 1956; minimum, 6.3 cfs Nov. 9 1952 (gage 

height, 1.01 ft).

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

which are poor. Numerous small diversions mainly for irrigation of hay meadows above 

station.

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

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

(Shifting-control method used July 1, 2)

Oct. 1 to May 24 May 25 to Sept. 30

1.4 

1.7 

2.0 

2.5

112

240

3.0 

4.0 

5.0

6.0

1,490

2,240

1.3

1.6 

2.0

30

65

134

2.5 

3.0

Note. Same as preceding 

table above 3.0 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.

48

46

45

45

56

56

51

50

52

58

64

57

57

52

45

41

36

36

36

36

36

39

40

41

41

*40

40

42

48

65

11

1,470

47.4

2,920

Nov.

52

36

59

68

142

92

80

74

74

126

149

80

67

b65

b60

b55

b80

blOO

bl!5

b!30

135

107

96

91

89

99

101

*92

89

86

2,689

89.6

5,330

Dec.

84

81

80

b80

b75

b75

b80

b80

b75

b75

91

108

b95

b90

b90

b95

b90

b90

b90

bllO

b200

b350

b400

a35o

a300

a260

a270

a210

also

al50

a!60

4,564

147

9,050

Jan.

a!70

a!80

a!85

a!85

*b!75

b!60

144

131

b!20

bllO

108

114

118

112

b!05

b85

b90

b85

b95

101

103

103

101

b95

b80

b65

b70

*b75

b70

b65

b55

3,455

111

6,850

Feb.

b50

b65

b75

b85

b95

blOO

b90

b85

a80

a85

a9O

a90

a85

a80

a75

a70

a75

a80

a85

a9O

a80

a75

a80

a80

*b75

b70

b75

b80

b85

2,330

80.3

4,620

Mar.

b90

b90

b80

74

b70

b60

b60

64

64

b60

b50

b55

b55

b60

b60

63

65

71

75

84

98

125

174

259

350

433

402

*336

310

310

316

4,463

144

8,850

Apr.

284

262

246

243

237

222

222

219

225

290

388

429

494

602

745

908

957

869

852

962

1,150

1,350

1,430

1.570

1,390

1,230

1,150

*1,090

1,000

908

21,924

731

43,490

May

836

781

740

710

675

655

700

836

957

1,080

1,080

968

869

792

781

908

1,140

1,440

1,710

*1,940

2,070

2,090

2,000

*2.220

1,890

1,670

1,590

1,410

1,420

1,390

1,440

38,788

1,251

76,930

June

1,550

1.680

1,410

1,350

*1,180

968

820

755

808

864

825

715

645

611

620

685

6O2

521

508

*552

548

445

417

465

424

382

365

362

349

518

21,744

725

43,130

July

303

277

135

386

327

309

288

275

263

258

244

228

218

223

208

191

181

170

161

154

147

134

124

*114

101

96

94

96

101

98

n-z

S3.

6,297

203

12,490

Aug.

94

91

93

90

83

80

83

82

77

74

72

71

68

71

72

77

71

62

60

57

56

55

51

52

53

58

*68

70

68

82

72

2,213

71.4

4,390

Sept.

65

61

58

56

55

53

53

52

52

50

50

48

46

46

46

42

39

39

40

40

44

45

41

38

36

37 *34

36

41

48

1,391

46.4

2,760

Calendar year 1955: Max 1,380 Min 24 Mean 211 Ac-ft 153,000

Water year 1955-56: Max 2,220 Min 34 Mean 304 Ac-ft 220,800

Peak discharge (base, l.OOO cfs).--Apr. 24 (12:3O p.m.) 1.63O cfs (5.24 ft); May 11 (4 to 6 a.m.) 

1,120 cfs (4.43 ft); May 24 (12:30 p.m.) 2,430 cfs (6.24 ft); June 2 (11:30 a.m.) 1,840 cfs 

(5.40 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

stations.

b Stage-discharge relation affected by ice.
206 FEND OREILLE RIVER BASIN

Clark Fork below Mlssoula, Mont.

Location.--Lat 46°52'10", long 114°07'30", in NEijSEv sec. 21, T. 13 N., R. 20 W., on right 

bank 2 miles downstream from Bitterroot River and 5 miles west of Missoula.

Drainage area.--9,003 sq mi.

Records available. October 1929 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 3,090 ft (from topographic map).

Average discharge.--27 years, 5,087 cfs (3,683,000 acre-ft per year).

Extremes. Maximum discharge during year, 44,600 cfs May 25 (gage height, 10.75 ft); minimum daily, 1,100 cfs Feb. 1.

1929-56: Maximum discharge, 52,800 cfs May 23, 1948 (gage height. 12.08 ft); minimum, 388 cfs Jan. 18, 1933 (gage height, 0.58 ft, backwater from ice).

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

which are fair. Some diurnal fluctuation at low flow caused by powerplant at Bonner. 

Diversions for irrigation of about 235,000 acres above station.

Revisions (water years) . WSP 1042: 1931. WSP 1246: Drainage area. WSP 1316: 1932(M), 

1935(M), 1946(M).

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

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

0.4 

1.0 

2.0 

3.0

1,050

1,810

3,510

5,760

4.0

6.0

8.0

11.0

8,750

16,100

26,400

46,500

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2,760

2,780

2,740

2,710 

2,720

2,760

2,780

2.850

2,710

2,740

2,780

2,780

2,760

2,670

2,620

2,560

2,500

2,460

2,430

2,430

2.410

2,430

2,440

2,460

*2,460

2,410

2,440

2,440

2,510

2,630

2,720

80,870

2,609

160,400

Nov.

2,740

2,650

2,600

2,670 

2,900

3,050

2,960

2,810

2,800

2,940

3,420

3,600

2,650

2,130

1,920

al.700

al , 800

a2,200

2,550

3,430

5.720

3,570

3,320

3,190

3,150

3,360

*3,450

3,300

3,130

3,090

86,800

2,893

172,200

Dec.

3,020

2,980

2,940

2,850 

2,550

2,390

2,710

2,600

2,530

2,670

2,710

3,020

2,980

2,460

32,300

a2,200

32,150

32.100

32,100

33,000

35 , 500

38 , 500

alO.OOO

39 , 000

37 , 500

36,500

36,000

35,500

34,500

33,600

33,400

122,260

3,944

242,500

Jsn.

33,200

a3,300

*b3 , 400

3,760 

4,200

3,840

3,450

3,320

3,290

3,020

3,070

3,050

2,940,

2,890

2,900

2,720

2,670

2,710

2,800

2,850

2,890

2,850

2,850

2,760

2,560

2,020

*1,710

32,000

32,000

31 , 800

31.500

88,120

2,843

174,800

Feb.

al.100

31,300

al,600

31,800 

a2,150

2,380

2,550

2,500

2,390

2,360

2,390

2,500

2,580

2,510

b2,000

31,400

31 , 600

1,920

2,120

2,270

2,380

2,600

2.890

*2,740

2,580

2,410

2,350

2,350

2,330

64,050

2,209

127,000

Mar.

2,410

2,830

3,090

2,710 

2,460

2,310

2,250

2,310

2,330

2,280

2,020

1.950

2,120

2,200

2,190

2,190

2,550

2,980

3,490

3,980

4,420

5,080

6,650

8,860

10,200

10,900

 9,310

6,910

6,160

6,020

6,400

131,560

4,244

260,900

Apr.

6,070

5,480

5,200

5,200 

5,150

4,930

4,710

4,640

4.600

4,950

5,860

6,490

6,820

7,720

9,200

11,000

13,300

14,300

13,700

14,000

15,700

18,200

20,100

20 . 400

20 , 400

18,200

*16,700

15,700

14,900

14,000

327,620

10,920

649,800

May

13,100

12,300

11,900

11,600 

11,400

11.200

11,200

12,400

14,500

16,400

17,900

17,500

16,300

15 , 100

14,000

14,300

16,800

21,400

26,500

30 , 900

36,100

40 , 400

*41,600

42,200

45 . 700

42,600

39,000

38,200

36,800

35,100

33,500

745,900

24,060

*1,479

June

34,000

57.200

 37,200

*33,800 

52,000

28,500

23,400

19,600

18,600

19,600

20,800

19,900

17,800

16,400

16,000

17,400

19,800

17,400

*15,500

15,300

15,900

14,700

13,100

12,800

13,400

12,500

11,600

11,000

10,500

9.700

585,400

19,510

*1,161

July

8,680

8,010

9,000

10,700 

9 , 730

9,100

8,610

8,010

7,600

7,200

6,850

6,790

6,540

6,210

6,160

5,890

5,530

5,320

4,710

4,420

4,080

4,060

*3,980

5,680

5,470

3,380

3,240

5.110

5,210

3,300

3,290

183,860

5,931

364,700

Aug.

3,300

3,400

3,420

5,450 

3,346

3,220

3,210

3,220

3,220

3,170

3,090

3,020

2,940

2,850

2,720

2,620

2,550

2,450

2,580

2,530

2,270

2,200

2,140

2,080

2.060

2,070

*2,200

2,330

2,500

2,650

2,760

85,140

2,746

168,900

Sept.

2.800

2,780

2,720

2,720 

2,690

2,630

2,700

2,760

2,280

2,440

2,380

2,330

2,300

2,250

2,200

2,120

2,080

2,020

2,000

1.960

1,960

1,960

2,010

2,040

*2,010

2,040

2,020

2,060

2,220

2,360

68,840

2,295

136,500

Calendar year 1955: Max 27,300 Mln 1,300 Mean 5,528 Ac-ft 4,003,000

Water year 1955-56: Max 43,700 Mln 1,100 Mean 7,023 Ac-ft 5,098,000

Peak discharge (b3se, 12.000 cfs). ftpr. 25 (3 3.m.) 21,000 cfs (7.01 ft)j Msy 25 (8:30 p.m.) 

44,600 cfs (10.75 ft).

* Discharge messurement made on this dsy.

* Expressed in thoussnds.

3 No gsge-height record; dischsrge estimsted on basis of records for ststion sbove Mlasoula and 

3t St. Regis.

b Stsge-dlscharge relstion sffected by Ice.
PEND OREILLE RIVER BASIN 207

Clark Fork at St. Regis, Mont.

Location.--Lat 47°18'05", long 115°05 I 15", in center of SWi;- sec. 19, T. 18 N., R. 27 W., 

on left bank at St. Regis, half a mile downstream from St. Regis River.

Drainage area. 10,709 sq mi.

Records available. October 1910 to September 1956. Monthly discharge only for some periods, published in WSP 1316.

Gage. Water-stage recorder. Altitude of gage is 2,600 ft (by barometer). Prior to 

flov. 29, 1933, staff gage at same site and datum.

Average discharge.--46 years, 7,352 cfs '(5,323,000 acre-ft per year).

Extremes.--Maximum discharge during year, 62,000 cfs May 24 (gage height, 18.98 ft); minimum, 1,770 cfs Feb. 2 (gage height, 4.32 ft).

1910-56: Maximum discharge observed, 68,900 cfs May 24, 1948 (gage height, 19.96 

ft); minimum, 1,000 cfs Dec. 17, 1940 (gage height, 3.36 ft), but may have been less 

during period of ice effect Feb. 19-22, 1929.

Remarks.--Records excellent. Some diurnal fluctuation at low flow caused by powerplant 

at Bonner. Diversions for irrigation of about 244,000 acres above station.

Revisions (water years).--WSP 1246: Drainage area. WSP 1316: 1916-17, 1920, 1929-31(M), 

19331H).

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

In cubic feet per second)

Oct. 1 to May 24 May 25 to Sept. 30

4.5 1,940

5.0 2,520

6.0 4,200

8.0 8,870

11.0 18,500

14.0 52,200

19.0 62,100

4.8 2,710

5.0 2,980

6.0 4,680

8.0 9,500

11.0 19,400

14.0 32,700

19.0 62,100

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

51

Total

Mean

Ac-ft

Oct.

5,580

5,580

5,580

5,550

5,580

5,580

5,600

5,600

5,830

4,000

4,080 

*3,900

5,810

5,750

5,660

5,570

3,490

5,410

5,570

5,520

5,500

5,270

5,290

5,270 

5,290

5,290

5.250

5,270

5,500

5,440

5,580

109,590

5,529

217,000

Nov.

5,570

5,550

5,480

5,570

4,060

4,080

4,100

5,940

*5,810

4,000

4,470 

4,770

4,520

5,770

5,090

2,560

2,590

2,470

3,190

4,450

4,910

4,990

4,660

4,550 

4,220

4,550

4,520

4,470

4,240

*4,080

118,610

5,954

255,500

Dec.

4,020

5,920

5,890

5,850

5,680

5,410

5,540

5,510

5,420

5,370

5,510 

5,920

4,280

5,920

5,370

5,290

5,050

5,050

5,000

5,000

4,070

7,100

15,000

15,000 

11,400

9,510

8,480

7,980

7,510

6,170

5,280

165,840

5,550

528,900

Jan.

5,170

5,150

5,410

5,620

5,910

6,010

5,570

5,210

4,950

4,660

*4,470 

4,470

4,410

4,280

4,280

4,260

5,960

3,900

5,900

5,960

4,020

4,020

4,000

5,960 

5,810

5,440

5,060

2,850

5,140

5,170

5,050

154,050

4,524

265,800

Feb.

2,580

2,000

2,200

2,620

2,860

5,520

5,490

*5,580

5,550

5,410

5,420 

5,480

5,550

5,490

5,440

2,820

2,570

2,420

2,900

5,210

5,440

5,550

5,660

5,850 

5,600

5,420

5,240

5,190

5,170

91,590

5,158

181,700

Mar.

3,160

3,250

3,620

3,770

3,420

3,210

3,090

3,060

3,110

3,090

2,980 

2,760

*2,820

2,880

2,950

2,940

3,000

3,320

3,810

4,490

5,170

5,870

7,170

9,580 

11,900

13,500

13 100

10*700

9,390

9,050

9 290

169,450

5,465

556,100

Apr.

9,590

8,840

8,280

8,180

8,180

8,020

7,780

7,580

7,550

7,950

9,250 

10,700

11,600

12,900

14,900-

17,500

19 , 800

*22,200

22,100

22,400

24,800

28,900

51,700

54,000

50, 400

27,800

25,900

24,400

22,700

528,860

17,650

*1,049

May

21,000

19,700

18,800

18,100

17,600

17,200

17,200

19,200

25,000

26,200

28,000 

27,600

25,600

*23, 600

22,400

25,200

26,800

52,700

59,500

47,200

55,400

*57 , 400

60,000

61,400 

60, 600

59,400

54,800

51,500

50,400

48,800

47, 200

tl,099.3

55,460

*2,180

June

46,900

47,900

48,800

46,500

*42.700

59,500

55,800

28,900

26,600

27,100

28,100 

27,600

25,400

25,400

22, 600

22,800

24,600

24,400

22,000

21,200

*2 1,200

20,500

18,900

17,100 

17,400

17,100

15,700

14,900

14,200

15.500

800,700

26,690

*1,588

July

12,200

11,500

12,500

15,800

15,400

12,400

11,800

11,100

10,500

10,000

9,660 

9,500

9,150

8,800

8,400

8,120

7,740

7,550

7,040

6,400

6,150

5,710

5,650

5,440 

5,100

4,880

*4,680

4,500

4~t440

4,480

256,550

8,269

508,500

Aug.

4,460

4,480

4,540

4,580

4,540

4,400

4,570

4,510

4,550

4,250

4,180 

4,100

4,010

5,940

5,840

5,730

5,650

5,550

5,450

5,360

5,550

*5,260

3,180

5,150 

5,120

5,120

5,160

3,260

5,550

3,520

5,580

118,060

5,808

234,200

Sept.

3,650

5.660

3,650

3,610

5,610

3,600

5,560

5,610

5,580

5,220

5,520 

3,260

5,200

5,160

5,110

5,050

2,980

*2,920

2,880

2,840

2,810

2,850

2,810

2,830 

2,850

2,840

2,850

2,910

2,940

5,150

95,270

5,176

189,000

Calendar year 1955: Max 55,900 Mln 2,030 Mean 7,495 Ac-ft 5,426,000

Water year 1955-56: Max 61,400 Mln 2,000 Mean 10,070 Ac-ft 7,314,000

* Discharge measurement made on this day.

* Expressed In thousands.
208 FEND OREILLE RIVER BASIN

Plathead River at Plathead, British Columbia 

(International gaging station)

Location.--Lat 49°00', long 114°29', on left bank at highway bridge, 0.2 mile north of 

international boundary, 0.2 mile northwest of Plathead, British Columbia, and 7 miles 

northwest of Trail Creek, Mont.

Drainage area.--450 sq mi, approximately.

Records available. March 1929 to September 1956 (no winter records prior to 1952). Prior 

to October 1934, published as "near Trail Creek, Mont."

Gage. Water-stage recorder. Altitude of gage is 3,980 ft (from topographic map). Prior 

to Sept. 1, 1949, staff gage at same site and datum.

Average discharge. 5 years (1951-56), 1,043 cfs (755,100 acre-ft per year).

Extremes.--Maximum discharge during year, 13,300 cfs May 21 (gage height, 7.05 ft); minimum daily, 101 cfs Feb. 1.

1929-56: Maximum discharge, 14,600 cfs May 23, 1948 (gage height, 9.1 ft, from 

floodmark), from rating curve extended above 8,000 cfs; minimum observed, 65 cfs Apr. 9, 

1929, but may have been less during periods of no record in winter.

Remarks. Records good except those for period of ice effect, which are poor. No regulation or diversion above station.

Cooperation. This station is maintained by Canada under agreement with the United States. 

Revisions (water years).--WSP 1092: 1933 (maximum gage height only).

Rating- tables, water year 1955-56, except period of ice effect (gage height, 

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

Oct. 1 to May 21

0.5 165

.7 190

1.0 290

Note. Same as 

following table 

above 1.0 ft.

May 22 to Sept. 3O

0.7 

1.0 

1.3 

1.6 

2.0 

2.5

205

300

450

645

1,020

1,620

3.0 

3.5 

4.0 

5.0 

6.0 

7.0

2,280

3,030

3,930

6,450

9,600

13, 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.

243

*236

232

232

243

243

236

240

325

530

624

504

432

390

396

444

456

450

480

582

582

536

498 4'92

1, 150

2,240

1,720

1,310

1,060

940

8ll

18,857

608

1.35

1.56

37,400

Nov.

696

610

645

*820

1,260

1,050

870

775

713

696

582

330

307

294

283

275

267

30T

357

410

388

382

381

380

380

402

368

338

350

343

15,256

509

1.13

1.26

30,260

Dec.

332

323

310

299

284

270

260

249

*236

225

205

214

226

212

194

206

225

209

217

242

280

330

385 3"68

360

350

355

320

282

240

200

8,408

271

0.60

0.69

16,680

Jan.

250

295

288

294

304

286

282

272

254

245

250

238

225

218

210

178

178

187

200

*208

203

200

194

190

154

114

123

134

123

111

102

6,510

210

0.47

0.54

12,910

Feb.

101

TTT

128

157

166

173

178

163

158

164

167

168

164

155

103

103

111

124

132

164

168

177

175

162

160

159

158

157

157

4,363

150

0.33

0.36

8,650

Mar.

156

*156

155

152

143

135

136

147

144

134

125

T2T

137

143

152

154

153

163

174

186

192

210

220

240

270

300

320 2~8~0"

260

242

258

5,764

186

0.41

0.47

11,430

Apr.

243

236

232

240

236

*218

215

210 2"10

222

229

250

282

370

510

730

1,050

1,240

1,470

1,880

2,420

2.550

2,220

1,970

1,700

1,560

1,490

1,360

1,260

1,130

27,913

930

2.07

2.31

55,360

May

1,040

970

890

*880

840

*870

1,140

1,670

2,260

2,850

3,080

2,790

2,480

2,450

2,890

3,890

5,920

7,970

8,990

10, 200

12.500

11 500

9^540

9,380

8,640

8,640

7,940

7,840

8,160

*8, 260

8, 000

164,470

5,310

11.80

13.61

326,200

June

8,860

9,640

7,540

7,010

7,690

*5,420

3,930

3,420

3,690

4,560

4,890

3,890

3,370

3,130

3,080

3,300

4,630

3,990

3,570

3,500

3,270

2,870

2,640

2,560

2,350

2,180

2,040

2,030

2,000

1,870

122,920

4,100

9.11

10.17

243,800

July

1.740

1,620

1,610

1,740

1,650

1,590

1,520

,450

,410

,380

* ,380

,310

1,250

1,380

1,270

1,190

1,100

1,020

950

910

870

830

784

748

713

670

645

*617

596

568

549

35,060

1,130

2.51

2.89

69,540

Aug.

542

549

550

516

492

462

450

432

426

450

444

414

396

375

365

360

350

340

324

320

308

308

308

304

304

308

300

296

304

308

296

11,881

383

0.85

0.98

23,570

Sept.

280

276

268

264

260

254

251

251

248

245

242

239

239

236

233

230

230

*228

228

233

242

236

230

230

233

225

251

251

248

308

7,389

246

0.55

0.61

14,660

Calendar year 1955: Max 7,720 Min 116 

Water year 1955-55: Max 12,500 Min 101

Mean 

Mean

938 Cfsm 2.08 In. 28.40 Ac-ft 679,200 

1,170 Cfsm 2.60 In. 35.45 Ac-ft 850,500

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 13 to Mar. 30.
PEND OREILLE RIVER BASIN 209

Plathead River near Columbia Falls, Mont.

Location.--Lat 48°28'20", long 114"05'20", in NE^NE^ sec. 12, T. 31 N., R. 20 W., on right 

bank 1 mile upstream from Middle Fork and 8 miles northeast of Colombia Falls.

Drainage area.--1,553 sq mi.

Records available.--September 1910 to September 1917, April 1929 to September 1956. Published as North Fork Flathead River near Columbia Falls September 1910 to September 1914.

e.--Water-stage recorder. Datum of gage is 3,109.70 ft above mean sea level, datum of

929 (levels by Bureau of Reclamation). September 1910 to September 1917 staff gage 

at site 1,000 ft downstream at different datum.

Average discharge.--25 years (1910-12, 1913-15, 1935-56), 2,875 cfs (2,081,000 acre-ft 

per year).

Extremes. Maximum discharge during year, 29,700 cfs May 22 (gage height, 11.97 ft); minimum recorded, 448 cfs Jan. 30 (gage height, 1.45 ft), but may have been less during 

periods of ice effect or of no gage-height record.

1910-17, 1929-56: Maximum discharge, 31,500 cfs May 21, 1954 (gage height, 12.25 

ft); minimum, 198 cfs Jan. 8, 1953 (gage height, 0.86 ft).

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

which are fair. A few small diversions from tributaries for irrigation of hay meadows 

above station. No regulation.

Revisions (water years). WSP 1216: Drainage area. WSP 1246: 1911, 1912(M), 1915-17(M), 

1929(M), 1938-39(M), 1946(M).

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. 10-26)

Oct. 1 to May 21 May 22 to Sept. 30

1.2 

1.5 

2.0 

3.0 

4.0

33O

475

775

1,560

2,720

6.0

8.0

10.0

12.0

6,160

11,800

19,600

30,100

2.4 

3.0 

4.0 

6.0

875

1,350

2,540

6,140

8.0

10.0

12.0

11,600 

19,400 

29,90O

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

Day

1

2

3

4

5

6

7

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.

973

938

an. 917

952

973

*952

945

1,180

1,960

2,770

2,550

2,210

1,980

1,870

1,880

1,900

1,880

1,950

2,390

2,540

2,460

2,320

2,170

2,450

3,520

5.740

3,280

2,970

2,770 

2,520

62,827

2,027

1.31

1.50

124,600

Nov.

2,290

2,040

2,140

2,360

5.250

3,150

2,800

2,520

2,380

2,440

2,330

1,730

1,470

1,380

1,270

1,250

1.2OO

*bl,580

1,650

1,830

1,750

1,720

1,700

1,700

1,700

1,800

1,600

1,500

1,570

1,550

57,430

1,914

1.25

1.38

113,900

Dec.

1,500

1,450

1,400

1,550

1,300

1,250

1,150

1,100

1,050

950

900

1,000

1,100

1,000

850

1,000

1,100

1,000

1,050

1,150

1,350

1,500

*bl.70Q

bl,620

1,540

1,490

1,530

1,410

1,240

1,020 

924

37,974

1,225

0.789

0.91

75,320

Jan.

1,100

1,350

1,500

1,350

1.410

1,530

1,310

1,260

1,130

1,090

1,110

1,080

1,030

1,000

931

801

827

903

945

938

910

896

*882

854

b700

b500

b550

b600

b550

b480 

b450

29,567

954

0.614

0.71

58,650

Feb.

450

480

570

700

750

780

*808

730

710

730

768

768

749

704

b450

450

500

550

570

*723

742

782

762

736

723

750

698

7O4

710

-----

19,527

673

0.455

0.47

38,730

Mar.

704

698

698

680

644

602

614

656

644

590

550

580

620

*638

644

652

620

626

658

680

692

742

854

1,000

1,170

1,490

1.570

1,450

1,580

1,550 

1,380

25,856

853

0.536

0.62

51,240

Apr.

1,320

1.270

1,270

1,340

1,460

1,360

1,310

1,280

1,270

1,370

1,490

1,660

1,920

2,450

3,230

*4,320

5,940

6,590

6,710

7,560

9,070

9.820

8,650

7,580

6,470

5,680

5,500

4,860

4,570

4,280

121,400

4,047

2.61

2.91

240,800

May

5,960

5,710

5,450

3,340

3,240

5.160

5,300

3,700

4,50O

6,500

8,200

8,000

7,200

6,600

7,000

9,500

*15,700

17,800

20,800

24,200

27 , 800

29.100

26,900

 25,100

»25,000

25,600

22,600

22,000

22,200

21 900 

2l! 600

429,660

15,860

8.92

10.29

852,200

June

22,400

24.900

25,000

20,800

21,500

18,400

14,100

11,700

11,600

15,600

15,300

13,400

11,400

10,500

*10,100

10,600

13,800

15,500

11,900

11,400

11,400

10,400

9,510

9,340

8,640

7,850

7,150

7,000

7,100

6.740

588,810

12,960

8.55

9.31

771,200

July

6.240

5,760

5,620

5,900

5,640

5,570

5,510

5,240

5,090

5,040

5,240

5,350

5,150

5,530

5,150

4,800

4,500

4,250

4,050

3,880

3,800

5,700

3,590

3,500

 3,360

5,240

5,110

2,950

2,820

2,710 

2.580

138,650

4,475

2.88

3.32

275,000

Aug.

2.500

2,470

2,410

2,360

2,250

2,100

2,000

1,950

1,870

1,870

1,950

1,870

1,770

1,700

1,660

1,640

1,580

1,580

1,550

1,480

1,440

1,400

1,360

*1.540

1,350

1,540

1,390

1,360

1,350

1 430 

*l|400

55,660

1,731

1.11

1.29

106,400

Sept.

.560

,300

,270

,230

,190

,160

,120

,090

,080

,040

,030

,000

990

968

945

931

910

903

896

903

960

975

938

924

938

924

945

1,040

1,060

1,230

31,250

1,042

0.671

0.75

61,980

Calendar year 1955: Max 

Water year 1955-56: Max

18,600

29,100

Min 

Min

350

450

Mean 

Mean

3,002

3,816

Cfsm 

Cfsm

1.93

2.46

In. 

In.

26.25 Ac-ft 

55.46 Ac-ft

2,173,000

2,770,000

Peak discharge (base, 11,000 cfs) . Hay 22 (7 a.m.) 29,700 cfs (11.97 ft); June 11 (2 to 4 p.m.) 

15,700 cfs (9.09 ft); June 17 (7 to 8 p.m.) 14,700 cfs (8.85 ft).

* Discharge measurement made on this day.

t> Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 17, Nov. 21 to Dec. 22, Jan. 1-3, Feb. 1-6, 16-19, Mar. 11, 12, 

May 7-16; discharge estimated on basis of records for Middle Fork Flathead River near West Glacier 

and summation study of the 5 forks of Flathead River as compared with Flathead River at Columbia 

Palls.
210 FEND OREILLE RIVER BASIN

Middle Fork Flathead River at Essex, Mont.

Location.- -La t 48°16'30", long 113°36'10", in NEiSW£ sec. 14, T. 29 N., R. 16 W. , on right 

bank 0.6 mile upstream from Ole Creek, 0.7 mile southeast of Essex, and 4 miles downstream from Bear Creek.

Drainage area.--510 sq mi.

Records available .--October 1939 to September 1953, June to September 1956.

Gage . Water-stage recorder. Altitude of gage is 3,730 ft (from river-profile map).

Average discharge .--14 years (1939-53), 1,032 cfs (747,100 acre-ft per year).

Extremes . --Maximum discharge during period June to September 1956, 13,500 cfs June 2 (gage 

height , 10.9 ft, from graph based on gage readings); minimum, 205 cfs Sept. 27 (gage 

height, 2.22 ft).

1939-53, 1956: Maximum discharge, 14,500 cfs May 22, 1948 (gage height, 10.95 ft, 

from partly estimated gage-height record); minimum daily, 30 cfs Jan. 22, 1940.

Flood in May 1954 reached a stage of 12.7 ft (discharge, 18,000 cfs, from rating 

curve extended above 12,000 cfs). Flood of May 21 or 22, 1956, reached a stage of 

11.7 ft, from floodmark (discharge, 15,400 cfs, from rating curve extended above 12,000 

cfs).

Remarks . Records excellent except those for June 1-11, which are good. 

Revisions (water years ). WSP 1216: Drainage area. WSP 1246: 1940, 1941 (m). 

Rating table June 1 to Sept. 3O, 1956 (gage height, in feet, and 

discharge, in cubic feet per second)

2.2 

2.6 

3.0 

4.0

5.0

200

325

500

1,140

2,070

6.0

7.0

9.0

11.0

3,330

4,950

9,080

13,700

Discharge, in cubic feet per second, June to September 1956

Day

1

2

3

4

5

6

7

8

9

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

Caler

Water

Oct.

idar year

year

Nov.

: K

: f

Dec.

ax

ax

Jan.

Mir

Mir

Feb.

i

i

Mar.

Mean

Mean

Apr.

C

c

May

8,7OO

fsm

fsm

June

glO,20O

g!2 , 800

glO,000

g8,970

g8,620

g6,180

g4,660

g4,090

g4,950

g5,840

g6,3OO

*5,040

4,250

4,010

4,200

4,960

4,880

4,010

3,820

3,930

3,370

2,930

2,740

2,740

2,560

2,280

2,120

2,200

2,140

1.870

146,660

4,889

9.59

10.69

290,900

In.

In.

July

1,670

1,600

1,740

1.970

1,810

1,750

1,66O

1,570

1,500

1,440

1,400

*1,330

1,260

1,260

1,150

1,050

983

927

878

837

798

759

714

684

648

618

590

565

550

535

5±Q

34,756

1,121

2.20

2.53

68,940

Ac

Ac

Aug.

505

530

570

515

470

446

436

436

414

405

397

385

»373

361

349

341

337

325

318

311

304

294

283

280

286

294

329

322

322

369

357

11,664

376

0.737

0.85

23,140

-ft

-ft

Sept.

318

300

290

283

283

276

269

262

252

249

243

240

237

231

225

220

*218

215

212

215

234

240

225

220

215

210

210

231

234

300

7,357

245

0.480

0.54

14,590

* Discharge measurement made on this day.

t Result of discharge measurement.

g Computed from once-daily staff-gage readings.
PEND OREILLE RIVER BASIN 211

Middle Pork Plathead River near West Glacier, Mont.

Location.--Lat 48°29'50", long 114°00'30", in SW^NE^ sec. 34, T. 32 N., R. 19 W., on left 

bank three-quarters of a mile downstream from McDonald Creek, If miles west of West 

Glacier (formerly Belton), and 3j miles upstream from mouth.

Drainage area. 1,128 sq mi.

Records available.--October 1939 to September 1956. Prior to October 1947, published as 

"near Belton."

Gage. Water-stage recorder. Altitude of gage is 3,130 ft (from river-profile map). 

Frior to Nov. 22, 1950, staff gage at same site and datum.

Average discharge.--17 years, 2,846 cfs (2,060,000 acre-ft per year).

Extremes.--Maximum discharge during year, 28,300 cfs May 22 (gage height, 11.28 ft); 

minimum, 338 cfs Feb. 15 (gage height, 1.03 ft).

1939-56: Maximum discharge, 34,500 cfs May 20, 1954 (gage height, 13.01 ft); minimum, less than 173 cfs Nov. 27, 1952 (stage below intake pipe).

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

Revisions.--WSP 1216: Drainage area.

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

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

1.1 

1.5 

2.0 

3.0

380

665

1,140

2,600

4.0 

6.0 

8.0

11.0

4,630

10,300

16,900

27,300

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

ZZ 

25

24 

25

26

27

28 

29

30 

51

Ibtal

Mean

Cfsm

In.

Ac-ft

Oct.

641 

609

SIT

649

699

*699

674

665

1,070 

5,560

4.810 

5,480

2,890

2,570

2,450

2,510

2,580

2,280

2,290

2,940

2,710

2,450 

2,240

2,080 

2,150

2,120

2,080

2,000 

1,900

1 1 880

1,790

61,885

1,996

1.77

2.04

122,700

Nov.

1,670 

1,520

1,600

1,950

5.560

5,110

2,730

2,480

2,290 

2,580

2,890 

2,410

2,180

2,010

1,880

1,720

1,560

»1,620

1,760

1,700

1,580

1,460 

1,560

1,510 

1,510

1,520

1,120

1,080 

1,100

1,080

55,740

1,858

1.65

1.84

110,600

Dec.

1,050 

1,010

960

921

912

905

885

858

851 

815

815 

1,100

1,180

950

bSOO

b900

bl.OOO

b850

b900

bl,000

bl,250

bl,600 

*b2,450

b2,550 

2,040

1,880

1,890

1,700 

1,480

1,240

1,150

57,666

1,215

1.08

1.24

74,710

Jan.

1,290 

1,420

1,540

1,590

1,470

1,290

1,210

1,270

1,200 

1,070

1,080 

1,070

1,020

990

795

815

950

970

950

905

858

849 

»851

804 

768

649

665

690 

641

564

545

30,515

978

0.867

1.00

60,120

Feb.

556 

522

564

649

682

665

649

601

595

595

585 

585

578

557

419

426

480

545

550

»557

550

564 

564

529 

529

508

508

515 

522

16,125

556

0.493

0.55

51,980

Mar.

487 

459

459

452

586

490

508

529

515 

480

452

480

487

480

480

473

487

487

508

*543

550

578 

657

804 

990

1,240

1.260

1,150 

1,150

1,120

1,150

20,251

655

0.579

0.67

40,170

Apr.

1,120 

1,070

1,060

1,150

1,190

1,110

1,060

1,040

1.050 

1,110

1,240 

1,580

1,660

2,260

5,540

*4,720

5,560

5,740

6,070

7,060

8,550

8.890 

7,810

6,680 

5,740

5,180

4,680

4,510 

4,050

5,790

109,610

5,654

5.24

5.61

217,400

May

5,560 

3,560

5,150

2,960

2,820

2.710

*2,850

5,440

4,400 

6,150

7,290 

7,050

6,260

5,850

6,120

8,620

»14,100

18,500

20,500

22,900

26,800

26,800 

23,800

*21,600 

21,000

»20,800

20,200

19,900 

20,800

19, 600

19,100

592,950

12,680

11.2

12.95

779,400

June

20,800 

24.400

21,600

19,400

19,600

15,500

12,100

10,500

11,400 

14,000

15,200 

12,700

10,900

10,500

*10,400

11,500

12,600

10,900

10,500

11,100

10,100

8,860 

8,140

8,050 

7,720

6,910

6,260

6,650 

6,860

5 990

560,720

12,020

10.7

11.89

715,500

July

5,500 

4,860

4,860

5,560

5,220

5,280

5,100

4,910

4,880 

4,950

5,030 

4,790

4,630

4,880

4,420

4,070

5,850

3,640

5,480

3,580

3,520

5,240 

5,150

5,000 

*2,850

2,740

2,570

2,450 

2,330

2,250

2,100

125,010

5,968

5.52

4.06

244,000

Aug.

2,010 

2,020

2,250

2,100

1,880

1,750

1,650

1,590

1,550 

1,510

1,470 

1,420

1,560

1,520

1,500

1,270

1,270

1,250

1.16C1,110

1,060

1,040 

1,050

*1.010 

1,020

1,020

1,140

1,190 

1,270

1,620

1,470

44,050

1,421

1.26

1.45

87,570

Sept.

1.500 

1,160

1,070

1,010

960

912

867

849

840 

822

822 

804

786

759

742

716

708

708

708

708

786

804

768

*755 

755

716

742

849 

858

1,110

25,350

845

0.749

0.84

50,280

Calendar year 1955: Max 16,900 Mln 252 Mean 2,861 Cfsm 2.54 In. 34.44 Ac-ft 2,071,000

Water year 1955-56: Max 26,800 Mln 586 Mean 5,491 Cfsm 5.09 In. 42.12 Ac-ft 2,554,000

Peak discharge (base, 8.700 efs). Apr. 22 (12:50 a.m.) 9,020 cfs (5.58 ft); May 22 (10 a.m.) 

28,300 era (11.28 ft); June 2 (4:50 p.m.) 25,500 cfs (10.48 ft); June 11 (9 a.m.) 15,800 ofs 

(7.68 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.
212 PEND OREILLE RIVER BASIN

South Fork Flathead River at Spotted Bear ranger station, near Hungry Horse, Mont.

Location.--Lat 47°55'20", long 113°31'25", in SE^-SW? sec. 17, T. 25 N., R. 15 W., on left 

bank 600 ft south of Spotted Bear ranger station, 1,000 ft upstream from Spotted Bear 

River, and 40 miles southeast of Hungry Horse.

Drainage area.--958 sq mi.

Records available. August 1948 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,670 ft (from river-profile map).

Average discharge. 8 years, 1,995 cfs (1,444,000 acre-ft per year).

Extremes.--Maximum discharge during year, 21,200 efs June 2 (gage height, 12.52 ft); minimum daily, 170 cfs Feb. 16.

1948-56: Maximum discharge, that of June 2, 1956; maximum gage height, 12.75 ft 

May 20, 1954: minimum discharge, less than 121 cfs Dec. 26, 1952 (stage dropped below 

intake pipes).

Flood of May to June 1948 reached a stage of 14.00 ft about May 22 (discharge, 

22,000 cfs, by slope-area determination of peak flow).

Remarks.--Records good except those for periods of ice effect, which are poor. 

Revisions.--WSP 1216; Drainage area.

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

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

(Shifting-control method used May 16-22)

Oct. 1 to May 21

1.0

2.0

1S9 

209 

339 

800

3.0 1,550

4.0

6.0

8.0

10.0

2,700

5,770

9,680

14,100

12.0 19,100

0.8 

1.5 

2.0 

3.0 

4.0

May 22 to Sept. 30

295

600

885

1,660

2,810

6.0

8.0

10.0

12.5

6,230

10,500

15,000

21,200

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

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

tbtal

Mean

Cfsm

In.

Ac -ft

Oct.

339

328

324 

324

328

328

320

35S

379

612

828

680

610

572

548

530

512

495

499

*558

553

562

544

517

526

522

508

495

486

517 

504

15,168

489

0.510

0.59

30,090

Nov.

473

447

460 

530

730

655

586

544

526

725

'STC 850

550

400

*335

310

300

320

360

330

310

300

290

280

280

280

250

230 240-

12,811

427

0.446

0.50

25,410

Dec.

240

230

220 

220

220

210

210

200

200

200

220

250

210

200

180

190

190

180

180

200

600

915

1,470

1,350

1,090

1,020

982

838

715

600 

500

14,230

459

0.479

0.55

28,220

Jan.

520

530

540 

130

500

470

480

470

440

400

400

410

410

400

380

340

340

340

340

350

350

350

350

340

320

300

290

270

250

'2~2T> 220 

11,850

382

0.399

0.46

23,500

Feb.

*220

230

240 

260

300

320

310

300

320

320

310

300

270

220

180

22"0" 170

250

280

300

310

320

330

33T51

330

320

320

330

330

8,240

284

0.296

0.32

16,340

Mar.

 320

310

300 

300

290

290

300

310

320

300

290

290

300

310

320

320

320

320

330

340

360

400

430

480

540

680 650"

610

 590

590

580

12,090

390

0.407

0.47

23,980

Apr.

590

591

591 

625

630

600

595

581

58T

675

800

951

1,250

1,820

2,530

3,340

3,640

3,650

3,940

4,660

5,790

6,310

5,390

4,580

3,900

3,520

3,300

3,150

*3,020

2,910

74,510

2,484

2.59

2.89

147 , 800

May

2,800

2,690

2,530 

2,390

2,260

2,160

2,280

2,920

4,470

5,660

5,910

5,250

4,520

4,070

4,200

5,930

9,180

12,000

*13,500

16,100

18.600

18,500

*16,600

15,800

15,000

14,000

14,000

*12,900

12,900

12,700

13,400

275,220

8,878

9.27

10.68

545 , 900

June

16,000

20,200

16,600 

14,900

14,200

10,400

7,820

7,190

8,780

10,700

11,400

9,220

7,780

7,420

7,900

10,100

9,710

*7,860

7,120

7,540

6,670

5,460

4,980

5,050

5,130

4,590

4,160

4,400

4,400

3,810

261,490

8,716

9.10

10.15

518,700

July

3,350

3,030

3,120 

3,120

2,980

2,920

2,820

2,680

2,590

2,530

2,530

2,470

2,320

2,350

2,170

1,970

1,800

1,700

1,600

1,530

1,480

1,420

*1,360

1,300

1,240

1,190

1,140

1,100

1,050

1,030

JJ82.

62,852

2,027

2.12

2.44

124,700

Aug.

970

976

1,020 

950

885

840

820

802

778

772

744

705

678

656

635

620

605

585

580

555

535

520

505

*500 5o"B~

510

540

540

555

575 

555

21,016

678

0.708

0.82

41,680

Sept.

525

505

486 

468

460

446

437

424

414

406

394

390

382

374

366

358

350

346

338

334

354

354

346

338

334

326

330

366

370 

484

11,805

394

0.411

0.46

23,410

Calendar year 1955: Max 13,300 Mln 170 Mean 1,689 Cfsm 1.76 In. 23.94 Ac-ft 1,223,000

Water year 1955-56: Max 20,200 Mln 170 Mean 2,135 Cfsm 2.23 In. 30.33 Ac-ft 1,550,000

Peak discharge (base. 7.500 efs). May 22 (3 a.m.) 19.500 cfa (11.93 ft)j June 2 (3 p.m.) 21.2 

efs (12.52 ft); June 11 (7:30 a.m.) 12,000 cfs (8.68 ft); June 16 (6 p.m.) 11,100 ofa (8.28 ft). 

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by Ice Nov. 13 to Dec. 21, Dec. 30 to Apr. 1.
PEND OREILLE RIVER BASIN 213

Spotted Bear River near Hungry Horse, Mont.

Location.--Lat 47°55'40", long 113°31'10", near center of sec. 17, T. 25 N., R. 15 W., on 

left bank a third of a mile upstream from mouth and 40 miles southeast of Hungry Horse.

Drainage area.--184 sq mi.

Records available.--October 1948 to September 1956 (discontinued).

Gage.--Water-stage recorder. Altitude of gage is 3,690 ft (from river-profile map).

Average discharge.--8 years, 380 cfs (275,100 acre-ft per year).

Extremes.--Maximum discharge during year, 4,690 cfs May 21 (gage height, 7.00 ft); minimum daily, 28 cfs Feb. 16.

1948-56: Maximum discharge, 5,480 cfs May 20, 1954 (gage height, 7.40 ft); minimum, 

20 cfs Jan. 5, 1953 (gage height, 0.67 ft), but may have been less during periods of 

ice effect.

Flood of May to June 1948 reached a stage of 7.24 ft about May 22 (discharge, 

4,010 cfs, by slope-area determination of peak flow).

Remarks.--Records good except those for Apr. 15 to June 15, which are fair, and those for 

periods of ice effect and no gage-height record, which are poor.

Revisions.--WSP 1216: 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 Apr. 16 to May 18, May 22-24,

May 27 to June 1)

Oct. 1 to June 1 June 2 to Sept. 30

0.8 

1.0

113

198

340

5.0 

7.0

550

825

1,560

2,490

4,690

1.5 

1.7

178

375

660

1,440

2,400

4,020

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.

60

59

59

59

60

60

60

60

84

126

136

T02

92

88

84

82

77

73

*71

75

77

86

84

82

88

104

99

92

88

90

90

2,547

82.2

0.447

0.51

5,050

Nov.

82

71

84

104

186

142

121

108

106

131

156

108

95

85

78

*71

70

80

100

97

95

90

85

83

80

77

75

73

72

70

2,875

95.8

0.521

0.58

5,700

Dec.

68

66

65

63

61

58

57

56

55

55

62

70

63

57

55

56

57

55

55

55

100

200

300

5S5

230

210

190

170

150

110

85

3,199

103

0.560

0.65

6,350

Jan.

90

95

35

93

*91

89

88

87

85

83

81

78

72

70

65

65

65

67

67

67

66

66

65

63

60

60

60

59

58

55

53

2,258

72.8

0.396

0.46

4,480

Feb.

*51

50

47

48

48

49

50

50

47

45

46

47

45

42

35

28

30

33

34

35

37

36

35

35

35

35

35

35

35

1,178

40.6

0.221

0.24

2,340

Mar.

*35

35

35

35

32

33

33

33

32

50

30

35

34

32

31

32

35

45

46

55

69

84

108

99

116

TJB" 148

131

*123

121

121

1,973

63.6

0.346

0.40

3,910

Apr.

113

108

113

116

113

106

106

104

TM

123

136

165

227

352

510

688

741

747

832

1,010

1,250

1,280

1,060

896

777

700

656

605

*575

550

14,863

495

2.69

3.00

29,480

May

528

510

474

456

440

424 4"64

595

858

1,080

1,100

968

832

753

808

1,300

2,360

*2,970

3,550

3,920

4,290

3,840

*3,360

3,240

3,050

2,800

2,970

*2,750

2,650

2,590

2 , 660

58,570

1,889

10.3

11.84

116,200

June

2,940

5,540

2,650

2,530

2,390

1,730

1,340

1,270

1,520

1,820

1,780

1,420

,190

,120

,150

,650

,540

1,280

*1,200

1,210

1,020

851

781

802

753

666

614

628

595

524

42,504

1,417

7.70

8.59

84,310

July

486

458

508

513

ISO

469

447

420

400

390

375

357

344

352

330

298

277

257

245

234

228

220

*214

207

200

191

188

178

172

169

163

9,770

315

1.71

1.97

19,380

Aug.

166

163

172

TBT

148

142

142

169

145

140

134

128

123

117

112

110

107

104

99

97

94

92

89

*92

97

105

120

107

107

131

115

3,824

123

0.668

0.77

7,580

Sept.

102

92

87

84

82

77

75

72

70

68

68

66

66

64

64

62

62

60

60

58

64

62

60

58

58

 SB 56

70

68

126

2,119

70.6

0.384

0.43

4,200

Calendar year 1955: Max 3,170 Min 30 Mean 333 Cfsm 1.81 In. 24.55 Ac-ft 240,800

Water year 1955-56: Max 4,290 Min 28 Mean 598 Cfsm 2.16 In. 29.44 Ac-ft 289,000

Peak discharge (base. 1,500 cfs). May 21 (2 a.m.) 4,690 cfs (7.00 ft); June 2 (8 a.m.) 3,910 ofs 

(6.35 ft); June 11 (12:30 to 3 a.m.) 1,990 cfs (4.59 ft); June 16 (l to 8:30 p.m.) 1,820 cfs 

(4.41 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 13 to Mar. 20 (no gage-height record Dec. 4 

to Jan. 4, Jan. 6-31; discharge estimated on basis of weather records and records for nearby 

stations).
214 FEND OREILLE RIVER BASIN

Twin Creek near Hungry Horse, Mont.

Location. Lat 47°59'10", Long 113°33'30", in E? sec. 25, T. 26 N., R. 16 W., on left 

bank 300 ft upstream from road bridge, 0.1 mile upstream from mouth, and 36 miles 

southeast of Hungry Horse.

Drainage area.--47.0 sq mi.

Records available.--August 1948 to September 1956 (discontinued).

Gage.--Water-stage recorder. Altitude of gage is 3,610 ft (from river-profile map).

Average discharge. 8 years, 119 cfs (86,150 acre-ft per year).

Extremes.--Maximum discharge during year, 1,560 cfs May 21 (gage height, 7.54 ft); minimum recorded, 7.8 cfs Mar. 10 (gage height, 1.52 ft).

1948-56: Maximum discharge, 2,790 cfs May 19, 1954 (gage height, 8.33 ft), from 

rating curve extended above 1,000 cfs on basis of slope-area determination at gage 

height 8.1 ft; minimum, 3.9 cfs Mar. 8, Nov. 26, 1952 (gage height, 1.77 ft), but may 

have been less during periods of ice effect.

Flood of May to June 1948 reached a stage of 8.1 ft about May 22 (discharge, 2,410 

cfs, by slope-area determination of peak flow).

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

which are poor.

Revisions.--WSP 1216: 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 26 to June 2)

1.7 

1.9 

2.2 

2.5 

3.0

4.0 

5.0 

6.0 

7.0 

7.5

232

425

716

1,190

1,580

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ac-ft

Oct.

12

TS

12

12

13

13

12

12

21

50

66

48

42

38

36

33

31

28

29

*30

28 

32

28

30

39

45

45

45

41

43

41

967

31.2

0.664

0.77

1,920

37

34

39

68

115

79

63

57

54

114

106

80

b66

b50

b38

*b33

b32

b36

b44

b42

b40 

b39

38

38

38

38

35

b33

32

31

1,549

51.6

1.10

1.23

3,070

31

30

29

28

27

28

27

27

26

25

26

b32

b29

b27

b25

b25

b25

b25

b25

b24

b40 

94

~95 130

85

72

68

61

55

b48

b45

1,334

43.0

0.915

1.06

2,650

b45

b50

52

49

47

48

*b47

40

b39

b39

40

41

b37

34

27

b27

b27

b28

28

27

27 

27

27

26

26

b22

b22

b23

b23

b20

bit

1,033

33.3

0.709

0.82

2,050

b!7

b!7

+b!7

18

20

20

20

19

19

19

19

19

18

16

15

16

17

18

19

20

20 

20

20

19

18

18

18

18

*18

______

532

18.3

0.389

0.42

1,060

18

17

18

16

16

17

17

18

17

ii

16

20

17

16

16

16

17

19

22

25

25

31

42

62

83

~93 110

*78

71

68

67

1,080

34.8

0.740

0.85

2,140

Apr.

61

59

58

64

64

59

56

54

B?

69

78

106

167

258

347

418

442

435

463

528

617 

563

402

331

277

258

248

230

218

205

7,190

240

5.11

5.69

14,260

May

*192

174

156

148

136

141

192

286

424

495

514

384

311

287

353

608

910

*1,090

1,180

1,290

1,540 

*1,140

966

910

849

801

747

733

*730

700

686

18,873

609

13.0

14.93

37,430

June

764

'SST 924

605

537

361

293

295

351

393

374

296

260

243

253

325

298

*253

237

230

200 

174

159

164

148

133

122

120

114

104

9,391

313

6.66

7.43

18,630

July

97

95

106

106

97

96

91

85

80

76

72

69

66

66

61

57

53

50

48

45

43 

41

38

*37

36

34

33

31

30

29

28

1,898

61.2

1.30

1.50

3,760

Aug.

32

36

33

30

27

26

26

27

25

24

23

22

22

21

20

20

19

18

18

18

17 

16

*T6

16

16

20

20

18

21

24

20

691

22.3

0.474

0.55

1,370

Sept.

19

18

18

18

17

17

16

15

15

15

14

14

14

13

13

12

12

12

12

12

14 

14

13

13

13

12

13

15

15

28

446

14.9

0.317

0.35

885

Calendar year 1955: Max 1,110 Min 10 Mean 107 Cfsm 2.28 In. 30.82 Ac-ft 77,210

Water ter year year 1955-56: 1955-56: Max Max 1,340 1,340 Min Min 12 12 Mean Mean 123 123 Cfsm Cfsm 2.62 2.62 In. In. 35.60 55.60 Ac-ft Ac-ft 89,220 89,220

Peak discharge (base, 480 efs). Apr. 21 (11:30 p.m.) 673 cfs (5.91 ft); May 11 (3 a.m.) 566 cfs 

.59 ft); May 21 (10 p.m.) 1,560 cfs (7.54 ft)j June 2 (5 a.m.) 1,080 cfs (6.92 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Feb. 4-28; discharge estimated on basis of weather records and 

records for nearby stations.
FEND OREILLE RIVER BASIN 215

Lower Twin Creek near Hungry Horse, Mont.

Location. Lat 47°59'40", long 113°33'20", in SEj sec. 24, T. 26 N., R. 16 W., on left bank 

hair a mile upstream from mouth and 35 miles southeast of Hungry Horse.

Drainage area. 22.4 sq mi.

Records available.--August 1948 to September 1956 (discontinued).

Gage.--Water-stage recorder. Altitude of gage is 3,630 ft (from river-profile map).

Average discharge.--8 years, 69.4 cfs (50,240 acre-ft per year).

Extremes. Maximum discharge during year, 909 cfs May 21, from rating curve extended above 

550 cfs on basis of slope-area determination at gage height 5.25 ft; maximum gage 

height, 4.49 ft June 2 (from gage-relation curve); minimum discharge recorded, 8.0 cfs 

Oct. 1, 2.

1948-56: Maximum discharge, that of May 21, 1956; maximum gage height, that of 

June 2, 1956; minimum discharge, 0.8 cfs Jan. 28, 1952 (gage height, 0.79 ft, caused 

by temporary storage behind ice Jam upstream).

Flood of May to June 1948 reached a stage of 5.25 ft (from outside gage) about 

May 22 (discharge, 1,200 cfs, by slope-area determination of peak flow).

Remarks. Records poor.

Revisions.--WSP 1216: 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 Oct. 1 to Dec. 12, May 30 to June 2)

1.9 

2.2

Oct. 1 to May 22

8.0 2.5

11 3.0

22 3.5

38 4.0

76 4.5

126

May 23 to Sept. 30

182

312

470

700

980

8.0

16

1.0 

1.3

1.6

2.0 

2.5 

3.0 

3.5 

4.0

162

252

351

480

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

Tbtal

Mean

Cf sra

In.

Ac-ft

Oct.

8.0

8.0

8.6

9.2

10

10

10

12

16

24

64

54

48

45

41

41

40

38

38

*39

38

40

37

36

40

44

45

45

44

44 

40

1,016.8

32.8

1.46

1.69

2,020

Nov.

36

35

36

50

64

57

53

50

49

SB_

67

b60

b56

b52

b48

*b42

b40

b42

b48

45

42

40

37

37

36

36

34

34

33

32

1,359

45.3

2.02

2.26

2,700

Dec.

31

30

29

29

28

28

28

27

26

26

27

36

b32

b28

b26

b26

b25

b25

b24

b26

34

49

76

62

60

55

53

47

42

b35 

b32

1,102

35.5

1.58

1.83

2,190

Jan.

b34

3534"

34

33

31

*30

30

28

27

26

25

25

24

b21

b22

b23

22

21

21

21

21

21

20

20

b!9

18

18

17

16

*b^5

752

24.3

1.08

1.25

1,490

Feb.

b!4

b!3

b!4

b!4

b!5

15

16

15

15

15

16

16

15

14

12

10

IT

11

12

13

14

13

12

12

12

12

12

12

*12

387

13.3

0.594

0.64

768

Mar.

12

12

12

12

11

11

11

11

11

£

9

12

11

10

10

10

10

11

12

14

15

18

23

31

39

4742"

*39

39

44 

42

600

19.4

0.866

1.00

1,190

Apr.

39

38

38

38

38

37

36

34

35

38

41

50

70

102

153

189

246

246

235

265

292

309

252

191

162

148

140

131

122

112

3,827

128

5.71

6.35

7,590

May

*100

92

87

84

76

76

95

135

194

265

270

230

189

164

189

290

428

*518

656

728

750

*630

610

535

524

468

462

462

*456

439 

430

10,632

343

15.3

17.65

21,090

June

513

572

417

422

390

250

199

206

269

323

301

202

183

184

199

273

224

*195

188

190

167

147

143

147

138

122

117

125

117

9J5

7,021

234

10.4

11.66

13,930

July

90

85

92

90

84

85

79

74

73

73

70

64

61

61

51

45

42

39

37

36

34

33

32

*31

29

26

26

23

23

22

20_

1,630

52.6

2.35

2.71

3,230

Aug.

23

tt

22

20

20

20

20

20

19

19

18

18

18

18

16

16

16

15

14

14

14

13

*T3

13

13

14

14

14

14

15 

14

519

16.7

0.746

0.86

1,030

Sept.

14

14

14

14

14

14

14

13

13

12

12

12

12

12

12

11

11

11

11

11

11

11

11

11

11

10

TO

11

11

15

363

12.1

0.540

0.60

720

Calendar year 1955: Max 538 Mln 7.8 Mean 71.1 Cfsra 3.17 In. 43.12 Ac-ft 51,500

Water year 1955-56: Max 750 Mln 8.0 Mean 79.8 Cfsm 3.56 In. 48.50 Ac-ft 57,950

Peak discharge (base, 300 efs).--Apr. 22 (3 a.m.) 332 cfs (3.07 ft); May 21 (11 p.m.) 909 cfs 

(4.38 ft); June 2 (3 a.m.) 804 cfs (4.49 ft); June 10 (11 p.m.) 388 cfs (3.17 ft); June 16 

(3:30 p.m.) 323 cfs (2.86 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Jan. 27-30, Feb. 6-28, Mar. 10-21; discharge estimated on basis c 

weather records and records for nearby stations.

4b7Z40 O -58 - 15
316 FEND OREILLE RIVER BASIN

ullivan Creek near Hungry Horse, Mont.

Location. --La t 48°01i45", long 113°42'10", in W§ sec. 12, T. 26 N., R. 17 W., on left bank 

a quarter of a mile downstream from Quintonkon Creek, 1 mile upstream from Hungry Horse 

Reservoir flow line, and 30 miles southeast of Hungry Horse.

Drainage area.. --71. 3 sq mi.

Records available .--September 1948 to September 1956 (discontinued) .

Gage . - -Water-stage recorder. Altitude of gage is 3,740 ft (from topographic map).

Average discharge. --8 years, 213 cfs (154,200 acre-ft per year).

Extremes . --Maximum discharge during year, 2,250 cfs June 2 (gage height, 4.96 ft); minimum 

daily, 25 cfs Feb. 16.

1948-56: Maximum discharge, 2,750 cfs May 19, 1954 (gage height, 5.29 ft); minimum 

daily, 10 cfs Nov. 26, 1952.

Flood of May to June 1948 reached a discharge of 2,280 cfs about May 22, by slopearea determination of peak flow at a point 1,300 ft upstream.

Remarks .--Records good except those for periods of ice effect, which are poor. 

Revisions --WSP 1C16: 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 26-29)

2.0

2.5

35

53

95

160

320

3.0 

3.5 

4.0 

4.5 

5.0

550

835

1,170

1,650

2,310

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

Day

1

2

3

4

5

6

7

8

9

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.

42

41 

4T

46

50

45

41

45

159

414

387

272

225

200

189

176

163

150

*165

178

168

181

165

165

195

203

198

192

183

192 

178

5,049

163

2.29

2.63

10,010

Nov.

163

153 

158

226

320

261

221

203

195

312

290

254

225

190

*170

140

135

145

165

160

150

143

134

129

129

127

112

108

103

101

5,322

177

2.48

2.78

10,560

Dec.

99

93 

90

87

84

82

82

78

76

73

78

158

136

100

80

80

75

70

70

80

206

588

492

264

225

200

186

168

150

130 

115

4,495

145

2.03

2.34

8,920

Jan.

120

125 

125

110

100

95

*90

85

85

80

80

80

80

75

75

70

70

70

71

68

65

65

64

63

60

60

60

60

55

50 

50

2,406

77.6

1.09

1.25

4,770

Feb.

45

*45 

40

45

45

50

55

W

45

45

50

55

45

40

35

25

30

35

35

40

52

44

45

41

41

40

40

40

40

------

1,238

42.7

0.599

0.65

2,460

Mar.

39

*38 

39

38

38

37

38

38

38

35

30

35

35

40

42

40

38

40

43

49

49

59

71

104

125

141

125

112

103

*97 

93

1,849

59.6

0.836

0.96

3,670

Apr.

87

84 

82

90

89

85

82

78

82

103

132

165

215

297

423

535

594

600

616

693

799" 805

654

556

480

446

432

405

387

*360

10,456

349

4.89

5.45

20,740

May

328

297 

272

254

241

237

275

387

627

787

874

688

556

505

600

900

,270

,560

* ,640

,850

,990

* ,790

,540

,530

,500

,400

,400

* ,390

,320

,230 

1,230

30,468

983

13.8

15.89

60,430

June

,360

,980 

,340

,230

,080

793

649

632

745

842

775

632

561

540

566

782

1,000

757

*644

622

525

475

405

410

369

332

305

293

278

250

21,172

7O6

9.90

11.04

41,990

July

231

221 

244

228

212

215

195

183

173

165

158

150

146

146

132

123

116

110

104

99

93

89

*87

82

79

76

73

71

71

68 

65

4,205

136

1.91

2.19

8,340

Aug.

64

70 

69

63

60

57

55

53

51

52

49

48

46

44

44

43

42

40

39

39

38

37

36

36

*36

40

44

45

62

52 

43

1,497

48.3

0.677

0.78

2,970

Sept.

41

39 

38

37

37

36

35

35

34

34

33

32

32

31

29_

29

29

29

29

32

53

39

34

33

32

31

34

43

44

105

1,117

37.2

0.522

0.58

2,220

Calendar year 1955: Max 1,480 Mln 26 Mean 206 Cfsm 2.89 In. 39.21 Ac-ft 149,200

Water year 1955-56: Max 1,990 Min 25 Mean 244 Cfsm 3.42 In. 46.54 Ac-ft 177,100

11 (12:30 to 3 a.m.) 

250 cfs (4.96 ft); June 10

.

Note. --Stage-discharge relation affected by ice Nov 

to Feb. 20, Mar. 10-14.

13-21, Dec. 14-2O, 30, 31, Jan. 1-18, Jan. 26
PEND OREILLE RIVER BASIN 217

Graves Creek near Hungry Horse, Mont.

Location.--Lat 48°07'30", long 113°49'10", in SE£ sec. 1, T. 27 N., R. 18 W., on left bank 

500 ft upstream from Hungry Horse Reservoir flow line and 22 miles southeast of Hungry 

Horse.

Drainage area. 27.0 sq mi.

Records available.--August 1948 to September 1956 (discontinued).

Gage.--Water-stage recorder. Altitude of gage is 3,600 ft (from topographic map). Prior 

HDD Oct. 1, 1951, at site 2j miles downstream at different datum.

Average discharge.--8 years, 134 cfs (97,010 acre-ft per year).

Extremes.--Maximum discharge during year, 1,160 cfs June 2 (gage height, 5.00 ft); minimum, 

16 cfs Sept. 18-20 (gage height, 1.98 ft).

1948-56: Maximum discharge, 1,520 cfs June 22, 1950 (gage height, 5.70 ft, site and 

datum then in use); minimum daily, 4.5 cfs Nov. 26, 1952.

Flood of May to June 1948 reached a stage of 5.33 ft about May 22 (discharge, 1,440 

cfs, by slope-area determination of peak flow), at former site and datum.

Remarks.--Records good except those for periods of ice effect, which are poor.

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. 12 to Mar. 21)

2.3 

2.6 

3.0

73

143

3.5 

4.0 

4.5 

5.0

285

505

795

1,160

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

Day

1

2

3

4

5

6

7

8

9

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.

36

34

34

38

47

47

43

44

126

414

400

254

190

161

147

143

135

126

*139

158

154

154

137

128

137

143

141

137

126

122

115

4,210

136

5.04

5.80

8,350

Nov.

108

98

101

106

120

118

109

101

96

124

128

120

115

104

*94

88

80

78

80

78

70

66

62

60

59

59

56

54

52

51

2,635

87.8

3.25

3.63

5,230

Dec.

51

50

47

46

45

45

46

44

44

43

44

63

b52

b47

b45

b43

b42

b42

b42

b45

63

101

152

14T

122

108

101

90

80

b63

b56

2,003

64.6

2.39

2.76

3,970

Jan.

b58

b59

60

60

62_

*58

57

56

b54

b52

50

48

47

46

b45

b44

b44

44

43

42

40

40

40

39

38

b37

b36

b34

b33

b32 

bS?

1,430

46.1

1.71

1.97

2,840

Feb.

b32

b33

33

33

32

31

30

30

30

30

31

31

30

b29

b27

b28

b29

b29

29

27

26

28

29

29

28

27

27

27

27

852

29.4

1.09

1.17

1,690

Mar.

27

*27

26

26

25

24

24

24

b23

b22

b23

b23

24

24

23

23

22

22

22

23

24

25

28

31

34

39

42

4T

40

*40

40

861

27.8

1.03

1.19

1,710

Apr.

38

37

37

38

38

37

37

36

35

38

41

45

54

72

101

137

170

185

190

210

250

264

224

188

165

143

130

122

118

113

3,293

110

4.07

4.54

6,530

May

104

98

88

82

79

76

84

106

158

224

260

224

188

172

196

296

490

687

*783

895

1.040

*930

808

808

972

847

795

*847

847

771 

783

14,738

475

17.6

20.30

29,230

June

937

1,110

888

840

789

485

348

328

425

621

651

470

392

387

400

600

916

576

440

480

396

316

299

288

264

*231

212

224

228

Ig8_

14,739

491

18.2

20.30

29,230

July

T5S" 172

158

154

145

147

141

135

130

128

124

118

120

126

115

104

93

85

80

74

70

66

*60

58

55

52

49

47

45

44 

43

3,096

99.9

3.70

4.26

6,140

Aug.

43

44

46

44

41

38

36

34

34

34

31

30

29

28

26

26

25

24

24

23

23

22

21

*20

25

21

28

33

48 

46

37

979

31.6

1.17

1.35

1,940

Sept.

33

30

29

27

26

25

24

23

23

22

21

20

19

18

18

17

17

16

16

20

32

26

22

20

19

18

19

26

33 

44

703

23.4

0.867

0.97

1,390

Calendar year 1955: Max 904 Min 14 Mean 126 Cfsm 4.67 In. 63.30 Ac-ft 91,150

Water year 1955-56: Max 1,110 Min 16 Mean 135 Cfsm 5.00 In. 68.24 Ac-ft 98,250

Peak discharge (base. 500 efs).--May 21 (10 to 11 p.m.) 1,100 cfs (4.97 ft); May 25 (3 to 6 a.m.) 

1,020 cfs (4.85 ft); June 2 (8 a.m.) 1,160 cfs (5.00 ft); June 11 (1 a.m.) 717 cfs (4.37 ft); June 17 

(5 a.m.) 1,050 cfs (4.86 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.
218 FEND OREILLE RIVER BASIN

Hungry Horse Reservoir near Hungry Horse, Mont.

Location. Lat 48°20'30", long 114°00'50", In NE^NEiNW^ sec. 27, T. 30 N. , R. 19 W., In 

block 14 of Hungry Horse Dam, 3 miles southeast of Hungry Horse.

Drainage area.--1,654 sq mi.

Records available.--September 1951 to September 1956.

Gage.--Water-stage recorder equipped with remote indicator in powerhouse. Datum of gage 

is at mean sea level (levels by Bureau of Reclamation). During construction and prior 

to May 1, 1953, various types of nonrecording gages were used.

Extremes. Maximum contents observed during year, 3,461,000 acre-ft Aug. 6 (elevation, 

3,561.37 ft); minimum observed, 1,822,000 acre-ft Apr. 18 (elevation, 3,477.60 ft).

1951-56: Maximum contents observed, 3,461,000 aere-ft July 3, 4, 1955, Aug. 6, 

1956; maximum elevation observed, 3,561.40 ft July 3, 4, 1955; minimum contents observed since normal low operating level reached in May 1952, 607,700 acre-ft Jan. 13, 

1953 (elevation, 3,362.50 ft).

Remarks.--Reservoir formed by concrete dam; construction of dam began in 1948, completed 

in 1952. Storage began Sept. 21, 1951. Capacity, 3,428,000 acre-ft between 3,560 ft 

(controlled spillway elevation) and 3,196 ft. Dead storage, 40,140 acre-ft. Normal 

operating low level 3,336 ft for on-site power generation (contents, 445,900 acre-ft 

exclusive of dead storage). Figures given herein represent usable contents above elevation 3,196 ft. Water is used for power production, flood control, and irrigation.

Cooperation.--Daily elevations furnished by Bureau of Reclamation.

Capacity table, water year 1955-56 (elevation, in feet, and usable 

contents, in acre-feet)

3,470

3,480

3,500

3,520

1,7O7.0OO 

1,859,000 

2,186,000 

2,56O,OOO

3,540 

3,56O 

3,565

2,974,OOO 

3,428,OOO 

3,548,OOO

Elevations, in feet, at 12 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t>

(*)

Oct.

559.96

559.96

559.95

559.95

559.97

559.92

559.81

559.64

559.62

559.82

559.92

559.94

560.07

560.17

560.26

560.35

560.23

559.93

559.73

559.51

559.52

559.64

559.65

559.46

559.00

558.73

558.81

558.93

559. O6

559.18

559.26

3,411

-16,OOO

Nov.

559.33

559.43

559.58

559.73

559.95

560.12

560.23

560.34

560.55

560.75

560.97

560.99

560.76

560.16

559.60

559. O3

558.48

558.02

558.23

558.34

558.32

558.34

558. 4O

558.53

558.64

558.74

558. 8O

558.83

558.88

558.94

3,4O4

-7 , OOO

Dec.

559.00

559.05

559.10

559.17

559.09

559.12

559.14

558.68

558. OS

557.52

557.05

556.62

556.44

556.41

556.40

556.15

555.84

555.43

554.94

554.43

554.28

554.53

554.78

555.00

555.22

555.40

555.55

555.62

555.71

555.76

555.83

3,331

-73,OOO

Jan.

555.92

556. 05

556.17

556.34

556.45

556.17

555.62

555.08

554.48

553.87

553.29

552.68

552.12

551.56

551.15

550.76

550.30

549.86

549.40

548.94

548.51

548. O3

547.57

546.91

546.26

545.60

545.23

544.56

543.92

543.25

542.54

3,O29

-302.OOO

Feb.

541.86

541.16

54O.48

539.79

539.11

538.43

537.75

537.02

536.35

535.66

535.0O

534.29

533.59

532.83

532.13

531.32

530.58

529.88

529.15

528.39

527.63

526.95

526.26

525.52

524.76

524.02

523.26

522.52

521.76

_______

2,595

-439,000

Mar.

521.16

520.56

519.73

519. OO

518.13

517.33

516.57

515.73

514.83

513.84

512.85

511.90

51O.93

509.93

508.93

5O7.92

5O6 . 9O

505. 88

5O4.98

5O4.25

503.50

5O2.74

501.79

5O0.84

499.87

499.O2

498. 07

497. O9

496. 09

495.07

494.05

2,O84

-511,000

Apr.

493 . 02

491.95

490.85

489.76

488.75

487.63

486. 5O

485.35

484.23

483.08

481.98

480.90

479.89

479.04

478.41

478.03

477.82

477. 6O

477. 9O

478.66

480. O3

481.53

482.57

483.50

484.11

484.40

484.68

484.90

485.13

485.33

1,942

-142,OOO

May

485.62

486. 05

486.33

486.57

487.04

487.47

487.88

488.54

489.51

490. 7O

491.82

493.OO

494.OO

494.71

495.62

497.00

499. OS

501.48

504.20

507.20

510.54

513.75

516.52

519.15

521.62

523.95

526.17

528.27

530. 3O

532 21

534:19

2,850

+908,000

June

536.39

539.32

541.75

543.72

545.57

546.84

547.86

548.74

549.80

551.09

552.46

553.54

554.33

554.95

555.79

557.12

558.38

559.25

559.76

56O.19

560.35

56O.35

560.28

560.25

560.17

56O.O4

559.86

559.86

559.88

559 . 86

3,425

f575,OOO

July

559.79

559.70

559. 82

559.94

56O.05

560.14

56O.21

56O.28

56O.37

560.42

560.48

560.59

56O.7O

560.77

560.81

560. SO

56O.83

56O.85

560.88

560.90

561.02

561.11

561. 2O

560.95

56O.59

56O.70

560. SO

560. 9O

560.98

561. 06

561.11

3,455

+30,000

Aug.

561.17

561.25

561.30

561.34

561.35

561.37

561.00

560.75

560.76

560.82

560.88

560.91

560.95

560.98

560.99

561.01

561. OO

561.02

561.02

561.03

561.02

561.03

561.03

561.03

561.03

561. 07

561.12

561.14

561.21

561 . 22

561.22

3,457

+2,OOO

Sept.

561.17

561.12

561. 1O

561.08

561. 08

561.07

561.06

561. O6

561. 06

56O.85

56O.53

560.25

559.97

559.86

559.88

559.90

559.90

559. 9O

559.91

559.85

559. 8O

559.54

559.22

558.93

558.91

558.93

558.96

559.O1

559.07

559.18

3,4O9

-48,000

Calendar year 1955.................... * +225,000

Water year 1955-56- ........ t -18.OOO

t Contents, in thousands of acre-feet, at end of month.

* Change in contents in acre-feet.

Note. Add 3,OOO ft to obtain elevation above mean sea level.
FEND OREILLE RIVER BASIN 219

South Pork Plathead River near Columbia Palls, Mont.

Location. Lat 48°21'30", long 114°02'15", in SW^SE^SW^ sec. 16, T. 30 N., R. 19 W., on

right bank if miles downstream from Hungry Horse Dam, 3| miles upstream from mouth,

and 7 miles east of Columbia Palls. 

Drainage area. 1,663 sq mi.

Records available . September 1910 to September 1916, April 1923 to September 1956. 

Gage.--Water-stage recorder. Datum of gage is 3,040.0 ft above mean sea level (levels by

Bureau of Reclamation). September 1910 to September 1916 chain gage and Apr. 23, 1923,

to Sept. 30, 1928, water-stage recorder, at site 3 miles downstream at different datum.

Oct. 1, 1928, to Sept. 30, 1952, water-stage recorder at site If miles downstream at

several different daturas. 

Average discharge.--28 years (1928-56), 3,388 cfs (2,453,000 acre-ft per year), adjusted

for storage. 

Extremes.--Maximum discharge during year, 11,700 cfs June 21 (gage height, 10.91 ft);

minimum, 96 cfs Sept. 19 (gage height, 2.45 ft); minimum daily, 152 cfs Oct. 30. 

1910-16, 1923-56: Maximum discharge observed, 46,200 cfs June 19, 1916 (gage

height, 16.6 ft, site and datum then in use), from rating curve extended above 20,000

cfs; minimum observed, 7.3 cfs Sept. 24, 1951 (gage height, 0.52 ft, site and datum

then in use); minimum daily, 7.3 cfs Sept. 24, 1951. 

Remarks. Records excellent. Plow regulated since Sept. 21, 1951, by Hungry Horse Reservoir (see preceding page). 

Revisions (water years). WSF 1216: Drainage area. WSP 1316: 1923-24(M) , 1926-27(M) ,

1932(M) , 1935-36(M) .

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

In cubic feet per second)

2.7 

3.0 

3.5 

4.0 

4.5

147

230

422

685

1,050

5.0

6.0

8.0

10.0

11.0

1,510

2,630

5,490

9,520

12,000

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

2B

29

30

31

Total

Mean

Ac -ft

(t)

Oct.

404

632

655

838

795

1,260

2,100

3,260

3,340

1,720

2,140

1,950

409

4O4

427

418

3,040

4,790

4,080

4,430

*1,240

172

1,080

4,520

6,750

4,990

447

167

154

152 * 7 o

O 1 o

57,122

1,843

113,300

-16,000

Nov.

224

338

348

209

157

242

164

366

194

365

610

1,010

4,190

6,470

8,160

8,190

*8,120

7,810

418

332

2,170

1,140

561

378

378

387

419

568

452

603

56,937

1,898

112,900

-7,000

Dec.

472

382

4OO

387

2,090

682

2,200

6,300

8,250

8,200

7,700

6,840

3,300

1,070

1,290

4,050

5,020

6,110

8,260

8,270

3,310

1,260

487

387

387

382

69T

760

765

686

440

90,831

2,930

180,200

-73,000

Jan.

396

382

*679

626

536

4,440

8,200

8,230

8,230

8,200

8,180

8,180

8,180

7,240

6,150

5,970

6,410

6,370

6,270

6,240

6,190

6,580

6,600

8,360

8,380

*8,380

5,430

8,360

8,380

8,450

8,600

192,819

6,220

382,500

-302 , 000

Feb.

8,620

8,490

8,420

8.580

8,420

8,450

8,490

8,450

8,490

8,490

8,530

8,530

8,490

8,530

8,900

9,040

8,830

8,530

8,530

8,940

8,580

8,720

*8,650

8,720

8,690

8 , 72C

8,78d

8,720

8,720

249,850

8,616

495,600

-434,000

Mar.

7,080

7,010

8,740

8,760

9,110

8,880

8,830

8,810

9,570

10,300

10,300

10,300

10,300

10,300

10,500

10,500

10,500

10,500

9,240

*7,920

7,940

8,460

10,000

10,400

10,400

10,700

10,600

10,80O

10,90C

1O, 90C

10,900

299,450

9,660

594,000

-511,000

Apr.

11,000

10 , 800

11,100

11,000

11,100

11,200

11,200

11,000

11,200

11,200

11,300

11 , 400

11,400

11,400

11,400

11,400

11,400

11,100

7,370

5,150

2,390

2,150

3,210

2,160

3,300

4,870

5,120

4,680

4,560

4,560

251,100

8,370

498,000

-142,000

May

3,080

2,090

2,400

2,340

586

398

1,130

707

1,000

2,230

2,360

469

402

*2,090

648

633

1,690

*3,520

3,270

3,430

3,410

3,360

3,360

3,490

3,600

2,120

3,090

2,580

2,580

3,100

5,750

68,693

2,216

136,300

f9O8,OOO

June

3,420

2,570

2,830

2,78O

4,090

3,840

2,400

*2 , 440

2,600

2,760

2,920

2,470

3,380

4,760

3,230

1,640

2^230

2,97O

6,150

7,730

9,230

9,400

9,360

9,310

9,290

9,290

9,290

7,000

6,760

'

152,900

5,097

303,300

f 57 5, 000

July

6,780

5,980

4,440

4,080

3,830

4,070

4,010

3,700

3,460

3,490

3,510

2,900

3,OOO

3,180

3,200

3,470

2,530

2,530

2,330

2,360

914

1,040

1,100

5,210

6,050

*451

422

555

581

649

712

90,534

2,920

179,600

+30,000

Aug.

780

855

1,030

1,010

1,030

1,050

5,580

4,580

1,090

500

470

525

570

598

631

655

930

649

655

661

839

679

679

719

700

661

757

757

799

841

355

31,935

1,030

63,540

+2 , 000

Sept.

1,030

1,420

750

*718

718

698

685

685

68S

3,060

4,370

4,190

4,O40

1,74O

326

172

468

469

629

1,7OO

*1,290

3,800

4,050

4,400

810

291

558

190

180

183

44,305

1,477

87,880

-48,000

Adjusted for change in contents in Hungry Horse Reservoir

Mean

Cfsm

Ac-ft

1,582

0.951

1.10

97,300

1,780

1.07

1.19

105,900

1,743

1.05

1.21

107,200

1,309

0.787

0.91

80,500

1,071

0.644

0.6S

61,600

1,350

0.812

0.94

83,000

5,983

3.60

4.01

356,000

16,980

10.21

11.77

1,044,000

14,760

8.88

9.9C

878,300

3,409

2.05

2.36

209,600

1,063

0.639

0.74

65,340

670

0.403

0.45

39,880

Observed

Calendar 

Water ye

year 1955: 

ar 1955-56:

Max 

Max

12 

11

,200 

,400

Mln 

Mln

152 

152

Mean 

Mean

3,209 

4,335

Ae-ft 

Ac-ft

2 

3

,323,000 

,147,OOO

Adjusted

Calendar 

Water ye

year 1955: 

ar 1955-56:

Mean 

Mean

3 

4

,520 

,310

Cfsm 

Cfsm

2.12 

2.59

In. 28.72 

35.27

Ac-ft 

Ae-ft

2 

3

,548,000 

,129,000

* Discharge measurement made on this day.

t Change In contents in Hungry Horse Reservoir, in acre-feet; furnished by Bureau of Reclamation.
220 PEND OREILLE RIVER BASIN

Flathead River at Columbia Falls, Mont.

Location. Lat 48°21'50", long 114°11 I 10", in NWirSEir sec. 17, T. 30 N., R. 20 W. , on right 

bank 200 ft downstream from county bridge at Columbia Falls and 5 miles downstream from 

South Fork.

Drainage area. 4,464 sq mi.

Records available.--May 1922 to September 1923 (fragmentary), June 1928 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 2,978.00 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers). Prior to Nov. 12, 1928, wire-weight gage on 

bridge 200 ft upstream at datum 0.19 ft higher.

Average discharge.--28 years (1928-56), 9,408 cfs (6,811,000 acre-ft per year), adjusted 

for storage.

Extremes. Maximum discharge during year, 66,200 cfs May 21 (gage height, 15.34 ft); minimum, 1,920 cfs Sept. 19 (gage height, 1.34 ft).

1922-23, 1928-56: Maximum discharge, 102,000 cfs May 23, 1948 (gage height, 

19.08 ft); minimum, 798 cfs Dec. 8, 1929 (gage height, -0.08 ft).

Maximum stage known, 22.7 ft in June 1894, from floodmarks (discharge, 135,000 cfs, 

from rating curve extended above 85,000 cfs by logarithmic plotting).

Remarks.--Records excellent. South Fork Flathead River which contributes about one-third 

of flow completely regulated by Hungry Horse Dam since Sept. 21, 1951 (see p. 218).

Revisions (water years). WSP 1092: 1923. WSP 1216: Drainage area.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

1.4 

2.0 

4.0 

6.0

1,990

2,800

6,580

12,200

8.0

10.0

12.0

15.0

20,000

29,800

41,700

63,500

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

(t)

Oct.

2,280

2,400

2,420

2,500

2,760

*2,950

3,970

4,810

5,680

7,140

10,000

9,090

6,120

5,440

5,200

5,180

7,280

9,320

8,080

10,300

7,220

5,610

5,840

8,600

11,300

11,300

7,030

6,140

5,590

5,300 

5,080

191,930

6,191

380,700

-16,000

Nov.

4,660

4,260

4,420

4,650

7,120

7,220

6,320

5,880

5,400

5,790

6,430

5,680

7,480

11,700

11,500

11,200

*11,000

11,300

4,580

4,600

5,840

4,880

3,880

3,580

3,610

3,720

3,580

3.180

3,220

3,320

180,000

6,000

357,000

-7,000

Dec .

3,140

3,000

2.830

2,740

4,260

3,000

3,100

7,920

9,900

9,960

9,580

9,190

6,840

3,280

3,010

5,260

7,310

7,440

9,760

9,960

6,920

4,570

5,350

5,020

4,450

4,090

4,500

*4,180

3,840

3,260 

2,770

170,430

5,498

338,000

-73,000

Jan.

2,900

3,290

3,580

3,620

3,760

6,340

10,600

10,700

10,500

10,400

10,400

10,400

10,300

9,580

8,100

7,800

8,240

8,660

8,410

8,380

8,150

8,340

8,420

*10,000

9,930

9,650

6,770

9,620

9,650

9,540 

9,620

255,650

8,247

507,100

-302,000

Feb.

9,800

9,900

9,900

9,900

9,900

9,900

9,900

9,870

9,900

9,900

9,900

9,930

9,870

9,850

9,740

9,860

9,580

9,680

9,820

10,000

9,870

10,000

*9,990

9,990

9,960

9,930

10,100

9,930

9,990

286,860

9,892

569,000

-434,000

Mar.

8,700

8.250

9,930

9,900

10,100

9,930

9,930

9,990

10,600

11,300

11,100

11,200

11,200

11,300

11,400

11,400

11,400

11,400

10,400

9,090

9,090

*9 , 500

11,200

11,900

12,300

13,200

13,100

13,200

13,200

13,200 

13,200

341,610

11,020

677,600

-511,000

Apr.

13,200

12,900

13,200

13,400

13,600

13,500

13,400

13,200

13,200

13,500

13,800

14,100

14,700

15,700

17,600

20,100

22,600

23,800

20,500

20,100

20,200

21,300

20,200

17,100

16,100

16,200

*15,500

14,200

13,700

13,300

483,900

16,130

959,800

-142,000

May

11,200

9,760

9,420

9,160

7,080

6,800

7,770

8,900

11,600

16,300

18,900

16 , 800

15,000

15,500

14,600

18,200

28,200

39,400

45,500

50,800

58 , 900

61.400

55,800

*51,500

*51,000

47 , 500

46 , 900

45,600

46 , 100

45,900 

45 , 500

916,990

29,580

*1,819

+908,000

June

46 , 900

52,200

49,40O

44,000

45 , 900

39,900

30 , 300

*25,700

25,800

30,400

33,900

30,200

26,600

26,200

24,600

23,800

29,300

28,200

28,700

31 , 300

31,600

29,700

27,700

27,300

26,400

24,800

23,400

21,300

21,300 

20,200

927,000

30,900

*1,839

+575,000

July

18,900

17,400

15,500

16,000

15,400

15,400

15,200

14,400

14,000

14,000

14,200

13,600

13,400

13,800

13,500

13 , 100

11,500

10,900

10,300

10,100

8,620

8,470

8,370

11,700

12 , 900

7,400

6,540

6,290

6,120 

5,940

5.790

368,740

11,890

731,400

+30,000

Aug.

5,680

*5 , 700

5,940

5,810

5,460

5,180

8,700

8.780

4,790

4,200

4,170

4,110

4,060

3,950

3,910

3,880

4,080

3,790

3,680

3,580

3,640

3,440

3,370

3,360

3,370

3,340

3,580

3,610

3,720 

4,130

*4,070

139,080

4,486

C 75, 900

+2,000

Sept.

4,020

4,200

3,400

3,260

3,130

3,060

2,950

2,860

2,820

4,750

6,540

6,320

6,140

3,890

2,480

1.990

2,260

2,240

2,320

3,440

2,940

5,560

6,050

6.560

2,960

2,040

2,480

2,230

2,280 

2,550

107,720

3,591

213,700

-48,000

Adjusted for change In contents in Hungry Horse Reservoir

Mean

Cf sm

In.

Ac-ft

5,931

1.33

1.53

364,700

5,882

1.32

1.47

350,000

4,310

0.966

1.11

265,000

3,336

0.747

0.86

205,100

2,347

0.526

0.57

135,000

2,709

0.607

0.70

166,600

13,740

3.08

3.43

817,800

44,350

9.94

11.45

*2,727

40,570

9.09

10.14

*2,414

12,380

2.77

3.20

761,400

4,520

1.01

1.17

277,900

2,785

0.624

0.70

165,700

Calendar year 1955: 

Water year 1955-56:

Max 

Max

40,000 

61,400

Mln 1, 

Mln 1,

730 

990

Mean 

Mean

9 

11

,465 

,940

Ac-ft 

Ac-ft

6 

8

,853 

,668

,000 

,000

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean

Mean

9,776 

11,920

Cfsm 2 

Cfsm 2

.19

.67 In.

29. 

36.

71 

33

Ac-ft 

Ac-ft

7 

8

,078 

,650

,000 

,000

Discharge measurement made on this day.

Change In contents In Hungry Horse Reservoir, In acre-feet; furnished by Bureau of Reclamatlc

Expressed In thousands.
PEND OREILLE RIVER BASIN 221

Swan River near Bigfork, Mont.

Location. Lat 48°01'30", long 113°58'40", in SE^SW^ sec. 11, T. 26 N., R. 19 W.. on left 

bank at outlet of Swan Lake, about 1,000 ft downstream from Johnson Creek and 5 ruiles 

southeast of Bigfork.

Drainage area.--671 sq mi.

Records available.--October 1910 to May 1911 (gage heights only). April 1922 to September 

1956.

aage.--Water-stage recorder. Datum of gage is 3,062.6 ft above mean sea level (river - 

profile survey). Oct. 10, 1910, to May 22, 1911, staff gage at site 10 miles upstream 

at different datum. Apr. 28, 1922, to Oct. 14, 1930, staff gage at site 800 ft upstream at datum 1.9 ft higher.

Average discharge.--34 years (1922-56), 1,100 cfs (796,400 acre-ft per year).

Extremes.--Maximum discharge during year, 6,790 cfs June 4 (gage height, 6.42 ft); minimum, 371 cfs Mar. 12 (gage height, 2.22 ft).

1922-56: Maximum discharge, 8,400 cfs May 24, 1948 (gage height, 7.12 ft, from 

graph based on gage readings); minimum observed, 193 cfs Jan. 26-29, 1930 (gage height, 

0.04 ft, site and datum then in use).

Remarks.--Records excellent. Diversions for irrigation of about 360 acres above station. 

Revisions (water years).--WSP 1216: Drainage area. WSP 1246: 1923-24(M), 1930.

Rating table, water year 1955-56 (gage height, In feet, and 

and discharge, in cubic feet per second)

365

560

1,020

4.0

5.0 

6.5

2,290

3,920

6,970

Discharge, October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

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

Ocb.

470

470

464

451

451

458

458

458

497

546

584

624

640

62T

616

616

600

592

592

592

600

600

608

600

600

584

*584

584

592

592 

592

17,339

559

0.833

0.96

34,390

Nov.

600

592

600

592

624

676

676

649

632

632

694

712

658

632

600

592

539

546

560

649

685

694

685

667

667

676

658

640

624

624

19,075

636

0.948

1.06

37,830

Dec.

608

592

584

560

553

*525

504

511

497

497

504

511

525

518

477

451

451

458

477

504

560

667

811

940

990

990

980

940

870

784

685

19,524

630

0.939

1.08

38,730

Jan.

640

640

658

667

676

658

624

616

608

568

546

539

532

525

532

511

504

497

490

484

484

490

490

484

470

458

*432

432

432

438

425

16,550

534

0.796

0.92

32,830

Feb.

407

389

377

389

401

413

425

432

432

432

432

432

432

432

425

413

395

395

407

413

407

425

451

451

444

438

*432

432

425

12,178

420

0.626

0.67

24,150

Mar.

419

432

425

419

407

407

407

401

401

401

389

383

389

389

389

383

383

389

389

395

413

*444

470

511

560

658

766

830

860

900

950

15,359

495

0.738

0.85

30,460

Apr.

970

1,000

1,020

1,050

1,110

1,120

1,100

1,060

1,040

1,060

1,150

1,310

1,460

1,640

1,870

2,160

2,520

2,880

3,130

3,230

3,330

3,520

3,740

5,760

3,550

*3,320

3,050

2,830

2,690

2,560

64,230

2,141

3.19

3.56

127,400

May

2,410

2,290

2,180

2,070

1,990

1,920

1,810

1,780

1,960

2,360

2,720

2,940

2,940

2,780

2,590

2,460

2,520

2,850

3,400

4,060

4,820

5,590

*6,130

6.220

6,180

*6,070

5,780

5,500

5,280

5,100

4,960

111,660

3,602

5.37

6.19

221,500

June

4,940

5,340

6,200

6.660

6,420

5,980

5,340

4,610

3,960

3,640

3,640

3,760

3,690

3,540

3,320

3,430

3,690

3,850

3,690

3,500

3,420

3,280

3,070

2,880

*2,750

2,640

2,530

2,410

2,340

2,280

116,800

3,893

5.80

6.47

231,700

July

2,200

2,130

2,080

2,130

2,110

2,060

1,990

1,930

1,860

1,780

1,720

1,690

1,660

1,640

1,610

1,580

1,530

1,470

1,410

1,340

1,290

1,240

1,200

1,150

1,120

1,060

1,040

1,010

990

960 

920

47,900

1,545

2.30

2.65

95,010

Aug.

*900

900

920

910

880

860

840

811

802

766

757

739

730

712

685

676

658

649

624

616

608

592

576

568 568'

592

616

632

640

640 

649

22,116

713

1.06

1.23

43,870

Sept.

632

616

600

584

*584

560

553

546

539

*518

511

497

490

484

477

470

458

451

438

444

464

470

477

464

464

458

444

470

477

518

15,158

505

0.753

0.84

30,070

Calendar year 1955: Max 5,000 Hin 332 Mean 1,038 Cfsm 1.55 In. 21.00 Ac-ft 751,700

Water year 1955-56: Max 6,660 Min 377 Mean 1,306 Cfsm 1.95 In. 26.48 Ac-ft 947,900

* Discharge measurement made on this day.
FEND OREILLE RIVER BASIN

Flathead Lake at Somers, Mont.

Location. Lat 48°04'30", long 114°13'30", in SE^NEv sec. 26, T. 27 N., R. 21 W., at 

steamboat dock at Somers.

Drainage area. 7,086 sq mi.

Records available. April 19C2 to September 1956.

Gage.--Water-stage recorder. Datum of gage is at mean sea level (Somers datum). July 1 to 

Dec. 12, 1923, staff gage at same site and datum.

Extremes. --Maximum contents during year, 1,814,000 acre-ft July 6 (elevation, 2,893.18 ft); 

minimum, 819,700 acre-ft Mar. 9 (elevation, 2,885.08 ft).

1922-56: Maximum contents, 2,208,000 acre-ft June 19, 1933 (elevation, 2,896.26 ft); 

minimum, 347,000 acre-ft Dec. 5, 1936 (elevation, 2,881.07 ft).

Remarks.--Since April 1938, lake elevation has been subject to regulation by Kerr Dam, 

4 miles below outlet.

Capacity table, water year 1955-56 (elevation, In feet, and usable 

contents, In acre-feet)

2.887

2.888

2.889

810,100

930,300

1,051,000

1,172,000

1,294,000

2.890

2.891

2.892

2.893

2.894

1,417,000

1,541,000

1,665,000

1,791,000

1,917,000

Elevation, In feet, at 12 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(*) M

Oct.

90.22

90.14

90.07

89.99

89.92

89.80

89.73

89.67

89.66

89.66

89.72

89.79

89.83

89.85

89.86

89.87

89.88

89.87

89.90

89.92

89.92

89.88

89.89

89.86

89.87

89.93

89.93

89.95

89.98

90.01 

89.92

ttl,407

-51,000

Nov.

89.90

89.90

89.93

89.86

89.95

90.02

90.10

90.12

90.11

90.10

90.12

90.17

90.10

90.12

90.18

90.15

90.17

90.22

90.15

90.10

90.10

89.98

89.92

89.88

89.72

89.56

89.50

89.36

89.25

89.10

ttl,306

-]D1,000

Dec.

88.96

88.84

88.71

88.62

88.49

88.40

88.25

88.20

88.20

88.16

88.28

88.15

88.12

87.97

67.85

87.74

87.65

87.60

87.50

87.54

87.58

87.48

87.45

87.33

87.30

87.40

87.24

87.18

87.08

86.98 

86.88

m,037

-269,000

Jan.

86.77

86.73

86.61

86.53

86.43

86.34

86.30

86.45

86.45

86.45

86.49

86.49

86.52

86.45

86.48

86.38

86.35

86.35

86.30

86.25

86.24

86.26

86.30

86.25

86.23

86.23

86.16

86.07

86.05

86.02 

85.96

925,500

-111,500

Feb.

85.95

85.92

85.86

85.82

85.81

85.79

85.80

85.77

85.74

85.75

85.70

85.67

85.67

85.67

85.66

85.64

85.60

85.57

85.55

85.52

85.51

85.53

85.53

85.53

85.51

85.47

85.41

85.40

85.40

858,200

-67,300

Mar.

85.35

85.29

85.28

85.25

85.23

85.22

85.20

85.20

85.12

85TT6

85.15

85.16

85.16

85.19

85.16

85.17

85.16

85.17

85.17

85.15

85.12

85.13

85.15

85.15

85.20

85.31

85.33

85.35

85.43

85.48 

85.51

871,400

+13,200

Apr.

85.55

85.58

85.62

85.63

85.68

85.69

85.69

85.74

85.75

85.72

85.76

85.81

85.85

85.91

86.00

86.14

86.28

86.49

86.64

86.75

86.81

87.00

87.11

87.19

87.26

87.29

87.31

87.31

87.22

87.23

ttl,079

+207,600

May

87.18

87.07

86.97

86.90

86.80

86.65

86.56

86.46

86.44

86.49

86.57

86.64

86.71

86.75

86.78

86.84

87.01

87.35

87.80

88.27

88.84

89.44

90.02

90.48

90.83

91.13

91.36

91.55

91.68

91.85 

91.97

ttl,661

+582,000

June

92.11

92.27

92 . 50

92.60

92.62

92.65

92.51

92.28

92.04

91.84

91.77

91.77

91.83

91.95

92.14

92.39

92.58

92.72

92.88

93.04

93.01

92.84

92.73

92.78

92.82

92.86

92.89

92.87

92.83

92.83

ttlj770

+109,000

July

92.75

92.73

92.89

93.03

93.14

93.16

93.11

93.07

92.98

92.95

92.95

93.00

93.03

93.05

93.03

93.01

92.98

92.97

92.95

92.94

92.93

92.93

92.89

92.89

92.94

92.35

92.80

92.76

92.72

92.66 

92.62

1 1-1, 743

-27,000

Aug.

92.65

92.65

92.65

92.65

92.68

92.73

92.75

92.84

92.86

92.90

92.95

92.99

92.99

92.95

92.97

92.96

92.87

92.86

92.89

92.88

92.88

92.87

92.88

92.90

92.85

92.95

93.05

93.05

93.07

93.02 

93.02

ttl,794

+51,000

Sept.

92.98

92.95

92.90

92.90

92.92

92.92

92.91

92.89

92.81

92.73

92.68

92.67

92.67

92.60

92.48

92.37

92.29

92.18

92.10

92.10

91.97

91.87

91.83

91.78

91.69

91.62

91.53

91.40

91.32

91.28

ttl,576

-218,000

Calendar year 1955.................... * -246,000

Water year 1955-56.................... * +118,000

t Contents, In acre-feet, at end of month, above 2,878 ft.

* Change In contents In acre-feet.

tt Expressed In thousands.

Note. Add 2,8OO ft to obtain elevation above mean sea level.
FEND OREILLE RIVER BASIN

Flathead River near Poison, Mont.

Location. --Lat 47°40'50", long 114 "15 '10", in NW^SEl sec. 11, T. 22 N., R. 21 W. , on left 

bank half a mile downstream from Kerr Dam, 4 miles west of Poison, and 5 miles downstream from Flathead Lake.

Drainage area. --7, 096 sq mi.

Records available . --July 1907 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,693.70 ft above mean sea level (levels by 

Montana Power Co.). Prior to Oct. 1, 1941, staff and 3hain gages or water-stage 

recorder at several sites near highway bridge at old site of Michell's ferry 6 miles 

downstream from present site, all at datum 2,629.20 ft above mean sea level (riverprofile survey) .

Average discharge. 49 years, 11,500 cfs (8,326,000 acre-ft per year), adjusted since 

Oct . 1, 1952, for change in contents in Hungry Horse Reservoir and Flathead Lake.

Extremes . --Maximum discharge during year, 58,200 cfs June 7 (gage height, 16.89 ft); minimum, about 250 cfs July 29, Aug. 12; minimum daily, 2,080 cfs Aug. 26.

1907-56: Maximum discharge, 82,800 cfs May 29, 1928 (gage height, 17.2 ft, site and 

datum then in use); minimum, probably less than 5 cfs Apr. 13, 1938; minimum daily, 

32 cfs Apr. 12, 1938.

Remarks . --Records excellent. Diversion above station far irrigation of about 10,000

acres. Flathead project pumps can divert up to 12,000 acre-fc per month when required 

for irrigation of lands downstream from station. Flow regulated by Kerr Dam since 

April 1938 and Hungry Horse Reservoir since September 1951 (see p. 218).

Revisions (water years) . WSF 652: 1926. WSF 75C: 1932. WSP 1182: 1948. WSP 1216: 

Drainage area. WSP 1246: 1928(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

23

24

25

26

27

28

29

30

3L

Total

Mean

Ac-ft

(t)

Oct.

8,650

8.00O

8,620

8,800

7,290

7,620

9,980

10,000

5,400

9,920

6,110

5,470

4,820

5 , 540

4,840

5,230

7,350

10,OOO

9,380

9,250

9,600

7,350

5,720

10,200

10,000

*10, 500

8,780

5,350

5,680

4,190

7,620

237,260

7,654

470,600

-67,000

llov .

6,330

5,550

5,410

5,380

3,68O

2.300

5,410

5,530

6,310

5,180

5,480

5,990

8,680

12,200

12,200

12,000

10,800

11,000

11,300

10,500

10,200

10,400

11,200

10,300

11,100

10,700

9,990

13,000

12,900

12,800

263,820

8,794

523,300

-108,000

Dec.

11,800

10,600

11,4OO

9,500

12,000

11,800

11,600

11,600

*11,900

12,000

9,970

11,200

11,300

12,500

15,800

12,600

13,200

13,100

13,600

12,900

12,200

11,100

11,300

10,200

6,7OO

5,940

9,460

10,600

10,900

11,100

11,900

349,770

11,280

693,800

-342,000

Jan.

8.3OO

10.3OO

11,100

11,000

10,900

10,900

10,100

7,100

11,900

11,300

11,200

11,300

11,400

11,100

10,800

13,000

12,400

12,300

11,600

11,200

10,700

7,550

11,200

10,700

*11,600

12,400

12,100

12,700

12,400

12,300

12,900

345,750

11,150

685,800

-413,500

Feb.

12,800

13,1OO

12,4OO

11,900

10,700

1 1 , 800

11,500

11,800

12,200

12,400

11,900

10,700

11,500

11,800

12,200

12 , 700

12,300

12,300

12,100

12,300

*11,800

11,800

11,600

12,300

13,100

13,300

12,100

12,000

12,300

 

350,700

12,090

695,600

-501,300

Mar.

12,200

12,000

11,300

11,900

11,900

12,300

12,100

11,600

11,300

12,000

11,900

12,200

12,100

12,000

11,900

12,000

11,900

11,600

*1 1,800

12,300

12,000

11,700

11,700

11,800

8,580

11,700

12,800

12,700

12,500

12,400

12,700

368,880

11,900

731,700

-197,800

Apr.

11,900

13,200

13,700

13,500

14,000

14,200

14,400

13,600

14,800

14,800

14,800

14,600

15,800

14,400

15,200

16,000

16,700

17,500

18,300

18,700

19,300

19,600

20,800

21,000

*21,200

21,300

21,800

22.100

21,700

21,900

510,800

17,030

il,013

+65,600

May

21,500

21,100

20,600

20,3OO

19,600

19,000

18,700

18,200

17,900

17,500

17,900

18,500

18,900

19,200

19,400

19,900

20,300

21,600

23,600

25,800

28,500

31,600

34,600

37,300

39,800

41,600

43,300

45,100

46,100

46,900

47,900

842,200

27,170

*1,670

t+1,490

June

49,400

49,600

51,100

51,800

52,200

*52,500

52,000

51,200

49,7OO

48,100

45,200

38,600

29,700

26,400

22,500

21,900

20,600

25,200

26,800

30,400

39,900

47,200

40,200

30,000

29,600

27,500

£7,600

27,800

26,800

24,800

*1,116.3

37,210

*2,214

+684,000

July

26.600

24,200

15,600

10,900

13,900

18,000

22,600

20,900

23,200

18,700

17,800

14,300

16,500

17,100

16,400

17,500

15,500

14,800

13,900

*13,400

12 , 500

9,930

12,700

12,300

11,700

12,100

12,100

12,000

9,530

9,140

8,370

474,170

15,300

940,500

+3,OOO

Aug.

6,850

7,740

6,470

4,630

3,330

3,820

6,040

5,630

2,720

2,390

2,300

4,460

5,380

5,710

5,280

5,010

5,040

5,040

3,830

4,860

4,490

4,180

2,830

4,260

2,990

2,080

2,610

2,940

*3,340

4,910

5,460

136,620

4,407

271,000

+53,000

Sept.

5,420

4,O80

3,650

3,630

3,790

3,250

4,190

5,320

8,460

8,840

9,390

8,970

9,210

9,640

9,130

8,220

8,270

9,670

9,040

9,710

10,400

9,380

8,340

10,600

10,100

8,360

10,700

9,760

8,730

6,160

234,390

7,813

464,900

-266,000

Adjusted for change in contents in Hungry Horse Reservoir and Flathead Lake

Mean

Cfsm

In.

Ac-ft

6,564

0.925

1.07

403,600

6,979

0.984

1.10

415,300

5,721

0.806

0.93

351,800

4,429

0.624

0.72

272,300

3,378

0.476

0.51

194,300

3,804

0.536

0.62

233,900

18,130

2.55

2.85

tl,079

51,390

7.24

8.35

*3,160

48,700

6.86

7.66

*2,900

15,340

2.16

2.49

943,500

5,269

0.743

0.86

324,000

3,343

0.471

0.53

198,900

Calendar 

Water yes

Calendar 

Water ye;

year 1955: 

ir 1955-56:

year 1955: 

ir 1955-56:

Max 

Max

Mean 

Mean

41, 

52,

11 

14

700 

500

,440 

,430

Min 

Min

AdjuE

Cf sn 

Cfsrr

2,190 

2,080

sted

i 1.61 

i 2.03

Mean 

Mean

In. 

In.

11,470 

14,290

21.90 

27.69

Ac-ft 

Ac -ft

Ac-ft 

Ac -ft

8,303, 

10,370,

8,282 

10,470

000 

000

,000 

,000

* Discharge measurement made on this day. 

t Change in contenbs, in acre-feeb, in Hungry Horse Reservoir (furnished by Bureau of Reclamation) 

and in Flathead Lake (furnished by The Montana Power Co.).

* Expressed in thousands.
224 FEND OREILLE RIVER BASIN

Clark Fork near Plains, Mont.

Location. Lat 47°25'50", long 114°51'20", 3W£ sec. 1, T. 19 N., R. 26 it., on right bank 

2 miles southeast of Plains and 6 miles downstream from Flathead River.

Drainage area.--19 ,958 sq mi.

Records available.--October 1910 to September 1956.

Gag_e.--Water-stage recorder. Datum of gage is 2,449.34 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers). Prior to Nov. 28, 1911, wire-weight gage at site 

50 ft upstream at same datum.

Extremes.--Maximum discharge during year, 106,000 cfs May 26 (gage height, 16.05 ft); minimum, 6,220 cfs Aug. 28 (gage height, 3.66 ft).

1910-56: Maximum discharge, 134,000 -fs June 5, 1948 (gage height, 19.17 ft); minimum, 3,200 cfs Feb. 8, 1935, Dec. 10, 1940; minimum gage height, 2.35 ft Dec. 10, 1940.

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

partly regulated by Flathead Lake (see p. 222) and by Hungry Horse Reservoir (seep. 218). 

Diversions for irrigation of about 335,000 acres above station.

Revisions. WSP 1246: Drainage area.

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

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

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

13,800

13,600

12,600

13,200

13,400

11,800

12,600

14,800

14 , 50C

10,600

14,600

*11,200

10,300

9,680

9,980

9,510

9,850

11,200

14,200

13,600

13,600

14,000

11,700

10,200

13,900

14,200

14,000

13,200

9,980

10,100

8j_880

378,780

12,220

751,300

Nov.

11,000

11,000

10,100

9,770

10,300

8,880

7,660

9,730

10,400

*11,000

10,800

10,800

bll.OOO

bll.500

b 13, 500

b!2,500

b 12, 000

bll,500

b 13 , 000

b 15 , 000

b 17, 000

17,600

17,900

17,800

16 , 200

16,600

16,600

16,000

18,300

18,000

393,640

13,120

780,800

Dec.

17,400

16,900

16,600

16 , 400

14,400

16,200

16,000

15,900

16,000

16 , 000

16,300

*14,800

b!5,500

b!5,000

b 15, 500

b 16, 500

b 15, 000

b 14, 000

bl5,500

b 15, 000

b!7,000

b21,000

26,300

27,500

24,100

17,800

15,700

18,000

18 , 800

17,900

b!7,000

534,000

17,230

*1,059

Jan.

b 17, 000

14,500

16,000

17,300

17,500

17,800

17, 20C

16 , 400

13,100

17,200

16,600

* 16, 400

16 , 500

16,400

16,400

16,400

17,600

17,000

16,800

16,400

16,000

15,600

12,600

b 14, 500

b!5,000

b!5,500

b 15, 500

b 14, 000

b!5,500

b!4,500

b 14, 000

493,200

15,910

978,200

Feb.

b 13, 500

b 13, 000

b!3,500

b 14, 500

17,000

16,500

b!6,500

b 17, 000

*bl7,000

b!7,000

b!7,200

17,600

16,300

17,000

16,600

15,100

14,400

15,600

17,000

17,600

17,600

18 , 500

17,400

17,400

17,600

17,900

17,400

16,500

16,600

_

476,800

16,440

945,700

Mar.

16,600

16,600

16,400

16,600

16,200

16,600

16 , 500

16,000

15,700

15,800

16,200

15,400

15,900

15,900

15,900

16,000

16,000

16,400

16,200

17,400

18,400

19,100

20,800

25,500

29,500

27,500

51,000

28,500

25,900

24,300

25,100

599,900

19,350

*1,190

Apr.

25,200

23,300

24 , 400

24,000

23,800

23,900

23,800

23,600

25,000

24,100

25,300

26,600

27,700

30,400

30,800

34,800

38,600

*42,200

43,600

44 , 400

47,200

52,000

56,100

59,500

59,800

57,000

54,200

52,500

50,800

49,000

«.,121.6

37,390

*2,225

May

46,800

45,100

43,400

42,200

41,000

40,000

59,200

44^500

47,800

49,7OO

50,300

48,800

47,000

*45,500

46,200

49 , 700

56,800

66,000

75,800

85,200

92,200

97,500

*10 1,000

*104,000

105,000

104,000

101,000

101,000

100,000

99,700

$2,056.8

66,350

*4,080

June

100,000

102 , 000

104 , OOP

103 , 000

99,900

96,600

91,400

85,400

80,800

79,000

78,800

74,800

62,200

54,500

47,800

45 , 400

48,400

46,700

48,300

49,400

*55,700

65,900

67,500

55,300

48,500

46 , 400

44,800

43 , 700

43,100

40,500

£2,009.8

66,990

*3,986

July

59,600

39,200

34,000

30,700

26,300

28,700

32,800

34,400

32,300

33,200

29,100

26,500

25,000

27,200

26,300

25,400

25,600

23,600

*22,100

20,900

20,300

18,700

16,500

18 , 500

18,200

17,500

17,800

17,600

17,200

14,400

14,900

774,500

24,980

tl,536

Aug.

14,400

12,800

13,500

12,400

10,500

9,470

9,140

11,400

11,200

8,600

7,820

7,460

8,270

10,100

10,700

10,300

9,680

9,680

9,640

8,640

9,010

*8,930

8,470

7,380

8,180

7,460

6,860

6,70Q

7,380

7,700

9,220

292,990

9,451

581,100

Sept.

10,200

10,100

9,010

8,350

8,230

8,310

7,900

8,180

10,700

12,100

12,800

13,200

12,900

13,100

13,600

13,000

11,800

11,800

13,100

*12,600

13,300

13,900

13,100

11,800

14,100

13,200

12,300

14, 100

13,600

12,900

353,280

11,780

700,700

Calendar year 1955: Max 74,200 Mln 6,980 Mean 19,680 Ac-ft 14,250,000

Water year 1955-56: Max 105,000 Mln 6,700 Mean 25,920 Ac-ft 18,810,000

* Discharge measurement made on this day.

* Expressed in thousands.

b Stage-discharge relation affected by ice.
PEND OREILLE RIVER BASIN 225

Thompson River near Thompson Falls, Mont.

Location. Lat 47°35'35", long 115°13'40", in NE£ sec. 7, T. 21 N., R. 28 W., on right 

bank 1 mile upstream from mouth and 6 miles east of Thompson Falls.

Drainage area. 642 sq mi.

Records available. October 1911 to September 1916 (occasional gage heights, discharges, 

and discharge measurements), April to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,410 ft (from topographic map). October 1911 to September 1916, staff gage at site a quarter of a mile upstream at different 

datum.

Extremes. Maximum discharge during period, 4,960 cfs May 21 (gage height, 7.77 ft); minimum, 222 cfs Sept. 27 (gage height, 1.64 ft).

1911-16, 1956: Maximum discharge, that of May 21, 1956; minimum not determined. 

Flood in May-June 1948 reached a discharge of 6,190 cfs, by slope-area determination 

at site a quarter of a mile downstream.

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

Cooperation. Water-stage-recorder graph and one discharge measurement furnished by the 

Washington Water Power Co.

Rating table, Apr. 1 to Sept. 30, 1956 (gage height, In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Apr. 11 to May 2)

1.6 

2.0 

3.0

198

324

700

4.0 

6.0 

8.0

1,270

2,960

5,260

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

18

19

20

21 

22 

23

24

25

26

27

26

29

30

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct. Nov. Dec. Jan. Feb.

------

Mar. Apr.

840

830

820

840

860

850

840 

820

800 840"

885

972

1,090

1,340

1,700

2,130

*2 , 400

2,640

2,660

2,770

3,180 

3,700 

5,600

3,240

2,870

2,560

2,350

2,250

2,200

2,060

54,937

1,831

2.85

3.18

109,000

May

1,910

1,830

1,710

1,620

1,580

1,510

1.500 

1,630

2,180

2,700

2,790

2,550

2,230

2,050

*1,980

2,220

2,930

3,740

4,340

4,740

4,900 

4,510 

*4,040

3,880

3,800

*3,580

5,070

2,880

2,840

2,730

2,670

86 , 440

2,788

4.34

5.01

171,500

June

2,830

2,760

2,460

2,510

2, 160

*1,940

1,710 

1,560

1,510

1,540

1,540

1,440

1,350

1,280

1,210

1,190

1,160

1,120

1,080

*1,090

1,070 

1,010 

962

950

900

860

830

800

760

740

42,122

1,404

2.19

2.44

83,550

July

700

660

718

'gljT

664

664

647 

631

623

615

615

603

570

530

510

500

480

*470

450

440

420 

410 

400

390

380

370

360

350

350

340 

550

15,881

512

0.798

0.92

51,500

Aug.

330

330

320

520

310

300

290 

285

290

290

290

285

280

280

275

275

270

270

270

270

*272 

265 

265

269

272

278

298

294

294

288 

278

8,903

287

0.447

0.52

17,660

Sept.

275

272

272

265

269

265

262 

£59

256

253

250

250

250

247

244

240

240

244

*240

237

247 

247 

237

231

228

225

228

231

231

259

7,454

248

0.386

0.43

14,780

Calendar year : Max MLn Mean Cfsm In. Ac-ft

Water year : Max MLn Mean Cfsm In. Ac-ft

Peak discharge (base. 2,000 cfs).--Apr. 22 (5:30 p.m.) 3,810 cfs (6.63 ft); May 11 (4 to 6 a.m.) 

2,840 cfs (5.86 ft); May 21 (12 m.) 4,960 cfs (7.77 ft).

* Discharge measurement made on this day.

Note.--No gage-height record Apr. 1-10, June 24 to July 2, July 13 to Aug. EO; discharge estimated 

on basis of 1 discharge measurement and records for nearby stations.
226 PEND OREILLE RIVER BASIN

Prospect Creek at Thompson Palls , Mont.

Location. Lat 47°35'15", long 115°21'20", in lot 12, SE£SE±SE£ sec. 7, T. 21 N., R. 29 

W., on right bank 500 ft downstream from Dry Creek, half a mile upstream from mouth, 

and half a mile south of Thompson Palls.

Drainage area. 182 sq mi.

Records available. April to September 1956. October 1911 to September 1916 (fragmentary) 

at site 500 ft upstream, records not equivalent owing to inflow.

Gage. Water-stage recorder. Altitude of gage is 2,400 ft (from topographic map).

Extremes. Maximum discharge during period, 2,860 cfs May 21 (gage height, 7.60 ft); minimum, 66 cfs Sept. 26 (gage height, 1.10 ft).

Flood in May-June 1948 reached a discharge of 2,800 cfs, from contracted-opening 

determination of peak flow at site above Dry Creek 500 ft upstream.

Remarks.--Records good.

Cooperation. Water-stage-recorder graph furnished by the Washington Water Power Co.

Rating table, Apr. 1 to Sept. 3O, 1956 (gage height, In feet, and 

discharge, In cubic feet per second)

1.1 

1.5 

2.0 

3.0

100

163

374

4.0 

5.0 

6.0 

8.0

685 

1,160 

1,76O 

3,140

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

18

19

20

21

22 

23

24

25

26

27

28

29

30 

31

Ibtal

Mean

Cfsm

In.

AC-ft

Oct. Nov. Dec. Jan. Feb. Mar. Apr.

a680

a700

a680

a670

a 700

a690

a680

a670

a680

a720

783

a900

al.100

al,300

al,500

al,650

*1,770

1,720

1,700

1,850

2,170

2,450 

2,360

2,280

2,010

1,740

1,590

1,530

1,400

1,230

39,903

1,330

7.31

8.15

79,150

May

1,080

1,000

930

882

819

770

828

1,130

1,580

1,720

1,660

1,420

1,170

1,040

*1,080

1,430

1,950

2,370

2,620

2,710

2,750

2,430 

*2,200

2,140

1,940

*1,790

1,700

1,560

1,610

1,560

1,580

49,449

1,595

8.76

10.10

98,080

June

1,750

1,540

1,330

1,230

1,080

891

765

697

705

761

761

682

615

577

587

570

531

491

470

*473

434

398 

377

358

336

318

295

286

279

269

19,836

661

3.63

4.05

39,340

July

262

250

277

256

244

238

226

213

204

196

200

194

182

175

168

162

156

*151

147

142

140

134

131

128

125

122

120

118

116

113

in.

5,401

174

0.956

1.10

10,710

Aug.

113

111

109

107

103

101

99

96

98

98

97

96

94

93

92

92

90

89

88

87

*86

84 

82

83

84

86

88

85

86

RO

2,880

92.9

0.510

0.59

5,710

Sept.

79

78

78

77

76

76

75

75

74

74

74

72

72

71

70

70

70

69

*69

70

70

69 

68

67

67

67

68

68

68

71

2,152

71.7

0.394

0.44

4,270

Calendar year : Max Mln Mean Cfsm In. Ac -ft

Water year : Max Mln Mean Cfsm In. Ac -ft

Peak discharge (base, 1,OOO cfs). --Apr. 22 (1:30 p.m.) 2,530 cfs (7.13 ft); May 10 (1 a.m.) 1,740

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby stations.
PEND OREILLE RIVER BASIN 227

Clark Pork at Thompson Falls, Mont.

Location. Lat 47°35 I 50", long 115°21'50", In SE^NW^ sec. 7, T. 21 N., R. 29 ¥., on right 

bank a quarter of a mile downstream from The Montana Power Co. dam, a quarter of a mile 

downstream from Prospect Creek, and half a mile west of Thompson Falls.

Drainage area. 21.113 sq ml.

Records available.--October 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,340 ft (from topographic map).

Average discharge. 5 years, 21,910 cfs (15,860,000 acre-ft per year).

Extremes. Maximum discharge during year, 109,000 cfs May 26 (gage height, 53.21 ft); minimum dally, 6,560 cfs Aug. 28.

1951-56: Maximum discharge, that of May 26, 1956; minimum dally, 4,020 cfs Sept. 1, 

1952 ,

Flood of May 31, 1948, reached a stage of 58.4 ft, from floodmarks (from The Montana 

Power Co. records).

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

fair. Flow regulated by Flathead Lake (see p. 222), Hungry Horse Reservoir (see p. 218) 

and Thompson Falls powerplant (reservoir capacity, 15,000 acre-ft). Diversions for 

irrigation of about 340,000 acres above station.

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, in cubic feet per second)

32.9

34.0

37.0

41.0

6,39O

8,800

16, TOO

31,300

46.0

49.0

53.5

58,500

78,OOO

lll.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

50

31

Total

Mean

Ac-ft

Oct.

15,500

15,600 

12,800

15,200

13,100

12,700

11,8OO

13,900 

15 , 200

12,700

12 , 700

12,600

10,400

10 , 700

9,210

9,860

11,000

9,600

13,500

13,800

13,700

14,000

12,400

11,700

11,900

14,100 

14,500

14,400

11,100

10,500

9,480

383,650

12,580

761,000

Hov.

10,500

11,700 

10,6OO

10,400

9,860

10 , 500

9,580

8,500 

10,400

*1O,500

11,000

10,90O

11,200

11,900

14,500

15 , 400

12,500

12,000

15,600

16,100

17,600

18,200

18,500

18,000

17,800

17,700 

17,400

16 , 500

18 , 200

18,400

407,140

15,570

807,600

Dec.

18,20O

17.2OO 

16,800

16 , 400

14,800

16,000

15,900

16,000 

16,000

15,800

16,100

15,600

16,100

15,6OO

15,700

17,500

15 , 700

14,400

14,100

15,500

18,700

22,400

28,100

50 , 500

28,200

22,100 

17,500

19 , 100

20 , 200

19 , 200

17,400

562,400

18,140

tl,116

Jan.

17,300

16,100 

15,700

18,200

19,200

18,800

18,100

17,300 

15,200

16 , 000

17,600

*17,200

17,200

17,500

17,000

16,700

18,200

17,700

17,300

17,200

16,800

16,100

15,800

15,10C

15^600

15,700 

16,000

14,600

16,300

15,800

14,400

515,500

16,650

tl.022

Peb.

a 15, 800

al5,5OO 

a!4,500

a!5,500

a!7,500

16,700

17,000

17,600 

17,200

17,500

17,900

18, OOO

17,600

16,800

16 , 9OO

a!5,500

a 15, 000

a!6,000

a!7,500

al8,000

18 , 000

18,500

18,200

17,600

18,000

18 , 6OO 

18,600

17,800

17,600

492,900

17,000

977,700

Mar.

17,900

17,400 

17,2OO

16 , 700

16 , 700

16,600

16 , 800

16 , 600 

16 , 500

16,000

16 , 200

*16,100

16,100

15.900

16 , 160

16,000

16 , 2OO

16,300

16,800

16,900

18,400

19,500

21,2OO

26,400

50,8OO

52,600 

55,400

52,400

29,1OO

26,900

26,700

628,000

20,260

*1,246

Apr.

27,500

26,100 

25,900

25,900

25,700

25,600

25,600

25,500 

24,700

25,90C

28,200

5O,000

51,500

54,000

55,800

59,700

44,000

47,600

49 , 6OO

50,500

55,500

58,000

61,500

64,200

64,800

62,500 

59,500

57,500

55,900

55,800

*1,239.5

41,320

*2,459

May

51,700

49.5OO 

47,800

46,500

45,500

45,800

42,800

45,900 

48 , 400

52,8OO

55 , 000

55,500

54,000

51,900

50 , 400

50,800

54,900

61,700

70,000

79,500

89,400

96,500

101,000

105,000

108,OOO

* 109, OOO 

108,000

105,000

105,000

104,000

105,000

*2,189.7

-70,640

*4 , 545

June

1O5,OOO

104,000

106,000

106 , OOO

1O5 , 000

99 , OOO

94,400

88,200 

85, OOO

80,500

80,200

77,400

69,100

58,700

55,600

49,000

50 , 400

a49,000

a5 1,000

a52,000

55,200

65,800

68,700

61,200

51,400

50,100 

47,500

46,200

45,200

45,600

£2,090.2

69,670

*4,146

July

40,9OO

41,500 

58,900

55,500

29,200

29,700

52,600

56 , 4OO 

54,500

55,500

31,900

29,800

25,800

27,100

28,000

26,800

26,700

24,700

*25,100

21,1OO

20,000

20,OOO

17,500

18,8OO

19,000

18,200 

18,200

18,200

18,200

15,400

15,100

815,900

26,520

tl,618

Aug.

15 , 100

13,900 

15,800

15,600

12,000

11,000

9,080

10,700 

12,200

10,600

8,940

7,520

8,840

9,210

10,200

11,100

10,400

9,980

9,500

10,000

8,760

9,51O

9,190

8.55O

7,280

7,860 

8,O80

6,560

7,540

7,710

8, 89O

5O7,OOO

9,905

608,900

Sept.

9,940

10,700 

10,100

8,860

8,340

8,190

8,680

8,100 

8,890

12,60O

12,6OO

13,50O

15 , 40O

15,400

15,500

15,500

12,700

12,20O

* 12,900

15 , 100

15,400

14,000

15,500

12,8OO

15,6OO

14,200 

12,20O

14,100

15 , 900

15 , 6OO

560 , 5OO

12,020

715,000

Calendar year 1955: Max 78,80O Mln 6,460 Mean 20,720 Ac-ft 15,000,000

Water year 1955-56: Max 109,000 Mln 6,560 Mean 27,500 Ac-ft 19,820,000

* Discharge measurement made on this day.

* Expressed In thousands.

a No gage-height record; discharge estimated on basis of records for Clark Pork near Plains and 

record of outflow from Thompson Palls powerplant as furnished by The Montana Power Co.
228 FEND OREILLE RIVER BASIN

Clark Fork at Whitehorse Rapids, near Cabinet, Idaho

Location. Gage at lat 48°05'25", long 116°03'50", in NEvSWv sec. 27, T. 55 N., R. 3 E.,

 on left bank at Cabinet, 0.4 mile downstream from Cabinet Gorge Dam, 1.7 miles downstream from Blue Creek, and 6.5 miles southeast of Clark Fork. Measuring cableway 

0.4 mile downstream. Discharge computed at Whitehorse Rapids, 2.7 miles downstream.

Drainage area.--22,067 sq mi, based on revised area of 22,006 sq mi for site near Heron.

Records available.--September 1928 to September 1956. Prior to October 1952, published 

as Clark Fork "near Herci, Mont.

Gage.--Water-stage recorder. Datum of gage is 2,000.00 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947, levels by Washington Water Power Co. Prior to 

Oct. 30, 1928, staff gage and Oct. 30, 1928, to Apr. 8, 1952, water-stage recorder, at 

site near Heron, 4 miles upstream at datum 88.00 ft higher prior to Jan. 2, 1931, and 

78.00 ft higher thereafter. Apr. 9 to Sept. 30, 1952, staff gage just upstream from 

present site at approximately same datum.

Average discharge. 28 years, 21,010 cfs (15,210,000 acre-ft per year).

Extremes.--Maximum discharge during year, 121,000 cfs May 26 (gage height, 88.02 ft); minimum, 944 cfs Oct. 30 (gage height, 64.13 ft); minimum daily, 4,510 cfs Oct. 16.

1928-56: Maximum discharge, 153,000 cfs May 29 to June 1, 1948; maximum gage height, 

50.97 ft May 31, 1948, site and datum then in use; minimum discharge observed, 270 cfs 

Aug. 12, 1952 (discharge measurement), at present site during filling of Cabinet Gorge 

Reservoir; minimum daily discharge since reservoir filled, 980 cfs Jan. 17, 1954.

Maximum discharge known, 195,000 cfs June 1894 (elevation at point an eighth of a 

mile below "near Heron" site, 2,137.1 ft, from floodmark).

Remarks.--Records excellent. Flow regulated by Hungry Horse Reservoir (see p. 218) and 

Flathead Lake (see p. 222). Extreme diurnal fluctuation caused by powerplant at Cabinet Gorge Dam. Diversions above station for irrigation of about 354,000 acres. Discharge measurements show that there is approximately 1,000 cfs ground-water inflow 

between Cabinet Gorge Dam and Whitehorse Rapids, and it has been observed that approximately 600 cfs of this inflow occurs in the reach (2.3 miles) from the measuring cableway to Whitehorse Rapids. Published records give flow at Whitehorse Rapids, computed 

by adding 600 cfs to observed flows at the measuring cableway, and are considered to 

be comparable to records at former site near Heron, except for surface flow from additional drainage area. To determine flow through the turbines and over the spillway at 

Cabinet Gorge Dam, 1,000 cfs should be deducted from flows published herein.

Cooperation.--Gage-height record furnished by Washington Water Power Co. and one discharge 

measurement made in collaboration with that company.

Revisions (water years). WSP 1182: 1936.

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

and discharge, in cubic feet per second)

66.0

67.0

68.0

69.0

71.0

5,550

5,500

8,140

11, 200

18,600

75.0

79.0

83.0

86.0

88.0

37,000

57,900

83,600

105,000

121,000

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.

9,590

11,000

14,300

13,700

14,800

14,400

14,000 

13,600

16,100

16,800

14,2UO

15,000

13,700

19,60O

12,600

4,510

15,000

16,200

15,100

14,800

14,800

13,500

9,660

14,800

14,700

14,700

15,100

15,000

12,500

6,600

*11,900

422,260

13,620

837,500

Nov.

12,300

13,100

13,900

14,600

11,600

6,680

12,400 

13,500

14,600

15,000

15,200

11 , 400

6,080

16 , 400

17,600

17,800

16,100

14,900

12,600

10, 500

16,500

18,200

19,800

15,900

22,400

19,600

20,900

20,600

17 , 400

18,000

455,560

15,190

903,600

Dec.

20,200

23,200

19,600

15,600

16,100

16,600

15,700 

17,600

21,100

18,700

14, 200

17,100

21,900

 19,100

14,900

20,900

21,000

14,700

17,400

18,100

22,500

23,900

26,200

52,200

32,100

30,000

26,800

23,500

24,400

25,600

22,600

653,500

21,080

*1,296

Jan.

16,800

15,100

18,100

21,600

23,000

23,000

20,800 

18,100

17,000

19,000

19,600

20,600

20,300

19,000

16,500

19,600

19,800

19,500

20,100

*20,400

19,500

15,000

16,600

16,700

17,600

18,900

17,300

18,800

15,700

16,800

14,600

573,400

18,500

*1,157

Feb.

15,000

14,700

14, 700

17,600

 17,100

18,400

20,400 

17,200

18,500

18,100

19,800

20,100

20,400

16,400

17,600

16,900

14,900

17,200

16,600

17,800

21,100

21,200

18, 100

17,800

20,600

18,500

19,900

19,900

 20,200

526,700

18,160

H,045

Mar.

21,900

21,500

17,700

14,500

16,500

17,200

18,100 

17,500

21,000

18,000

15,900

16,500

18,000

16,900

20,200

18,600

17,500

14,600

16,800

19,100

22,100

21,600

25,800

25,200

26,800

55,500

55,500

55,500

34,500

51,400

29,200

674,700

21,760

*1,358

Apr.

27,100

33,200

29,600

29,100

28,800

*28,900

26,400 

27,900

51,500

27,400

51,800

52,200

54, 900

58,000

41,500

45,200

50,000

55,200

56,400

57,000

60,900

66,700

70,800

75,900

74,700

71,400

67,600

65,000

62,800

60,200

*1,404.1

46,800

*2,785

May

57,700

54,900

52,900

50,500

*49 , 500

48,000

47,000 

49,400

54, 500

60,000

62,700

62,600

60,500

57,200

55,700

57,400

63,100

71,000

80,800

91,400

102,000

105,000

109,000

115,000

119,000

118,000

118,000

115,000

114,000

»115,000

112,000

$2,426.6

78,280

*4,815

June

115,000

115,000

114,000

115.000

112,000

107,000

102,000 

94,800

89,100

87,000

85,900

85,500

76,800

64,200

59,500

55,700

54,000

54,000

54,700

*54,600

56,900

64,900

71,400

67,000

54,800

55,000

50,400

48,600

47,800

46, 4(DO

t2,248.8

74,960

*4,460

July

45,600

43,600

42,600

56,500

55,600

52,200

54,700 

58,200

56,900

57,400

56,600

55,000

31,800

26,100

50,500

52,900

29,900

29,100

27,900

26,500

25,100

*17,800

20,600

19,600

21,900

19 , 500

20,600

19 , 500

21,000

19,000

15 . 500

905,500

29,140

*1,792

Aug.

15,400

16,700

20,100

14, 2OO

10,900

11,200

11,500 

12,100

12,600

11,800

12,000

9,490

9,880

10,500

11,800

12,000

11,900

11,500

11,500

11,000

11,000

9,860

10,500

10,500

9,510

8,680

9,760

*8, 280

8,340

9,140

10,000

552,640

11,580

699,500

Sept.

15,400

11,100

9,240

9,640

9,420

9,580

8,700 

10, 500

10,500

15,100

14,400

15,200

14,700

15,200

14, 600

12,100

14,600

12,900

14,500

15, 400

15, 200

14,600

12,500

15,900

15,400

15,200

15,400

14,100

15,500

15,000

586,780

12,890

767,200

Calendar year 1955: Max 81,800 Mln 3,250 Mean 22,780 Ac-ft 16,490,000

Water year 1955-56 : Max 119,000 Mln 4,510 Mean 30,130 Ac-ft 21,870,000

* Discharge measurement made on this day.

* Expressed in thousands.
FEND OREILLE RIVER BASIN 229

Fend Orellie Lake at Hope, Idaho

Location. La t 48°15', long 116°18', in lot 2, sec. 35, T. 57 N., R. IE., at floating 

dock near Northern Pacific Railway station at Hope.

Drainage area.--22,900 sq mi, approximately.

Records available.--March 1914 to September 1956. Published as "at Sandpoint," 1914-22. 

Records published for both sites September 1921 to September 1922.

Gage.--Water-stage recorder. Datum of gage is 2,000.00 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947; gage readings have been reduced to elevations 

above mean sea level. Mar. 18, 1914, to Sept. 30, 1922, staff gage 11 miles west 

across lake at Sandpoint at datum 42.18 ft higher. Sept. 17, 1921, to Oct. 7, 1929, 

staff gage at present site at datum 45.47 ft higher than present datum. Oct. 8, 1929, 

to Sept. 30, 1950, water-stage recorder at present site at datum 0.20 ft lower than 

present datum.

Extremes.--Maximum contents during year, 1,807,000 acre-ft June 5 (elevation, 2,065.06 

ft); minimum, 1,163,000 acre-ft May 8 (elevation, 2,058.22 ft).

1921-56: Maximum contents, 2,462,000 acre-ft June 9, 1948 (elevation, 2,071.62 ft, 

present datum); minimum, 117,700 acre-ft Feb. 17, 1936 (elevation, 2,046.27 ft, 

present datum).

Maximum contents known, 2,905,000 acre-ft June 1894 (elevation, 2,075.88 ft, present 

datum).

Remarks. Regulation at Albeni Palls Dam beginning June 4, 1952. Contents shown is that 

ab~ove elevation 2,044.8 ft.

Revisions (water years).--WSP 1122: 1946.

Capacity table, water year 1955-56 (elevation, in feet, 

and contents in acre-feet)

2,058.0

2,059.0

2,060.0

2,061.0

2,062.0

1,143,000

1,235,000

1,327,000

1,420,000

1,514,000

2,063.0

2,064.0

2,065.0

2,066.0

1,609,000

1,704,000

1,801,000

1,898,000

Elevation, in feet, at 12 p.m., 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

1*1

(*)

Oct.

61.03

60.85

60.69

60.52

60.29

60.02

59.75

59.59

59.52

59.43

59.45

59.50

59.56

59.82

59.84

59.66

59.67

59.75

59.80

59.84

59.91

60.02

60.03

60.14

60.12

60.10

60.17

60.32

60.48

60.50

60.59

2,060.59

-61,000

Nov.

60.67

60.84

61.07

61.35

61.46

61.51

61.65

61.80

62.03

62.22

62.24

62.31

62.27

62.08

61.67

61.13

60.61

60.24

59.88

59.52

59.40

59.41

59.48

59.50

59.65

59.66

59.72

59.77

59.71

59.73

2,059.73

-80,000

Dec.

59.64

59.66

59.61

59.59

59.48

59.39

59.36

5~97JO

59.48

59.55

59.74

59.77

59.86

59.82

59.73

59.77

59.87

59.84

59.92

59.98

60.08

60.24

60.36

60.57

60.79

61.04

61.16

61.20

61.22

61.33

61.43

2/361.43

+159, 000

Jan.

61.48

61.50

61.57

61.82

61.92

61.96

61.96

61.91

61.84

61.89

61.95

62.02

62.10

62.09

62.09

62.11

62.06

62.00

61.94

61.88

61.88

61.84

61.84

61.85

61.82

61.82

61.83

61.85

61.81

61.82

61.82

2,061.82

-^86,000

Feb.

61.72

61.49

61.24

61.03

60.78

60.61

60.55

60.42

60.31

60.19

60.13

60.07

59.99

59.85

59.68

59.51

59.51

59.71

59.88

59.88

59.91

59.94

59.92

59.87

59.92

59.93

59.89

59.92

59.88

2X359.88

-181,000

Mar.

59.89

59.91

59.93

59.82

59.68

59.63

59.67

59.66

59.71

59.79

59.79

59.73

59.74

59.73

59.77

59.78

59.90

59.95

59.87

59.92

60.04

60.08

60.07

60.05

59.99

59.99

59.86

59.67

59.49

.59. 28

59.03

2,059.03

-79,000

Apr.

58.74

58.69

58.61

58.52

58.40

58.42

58.47

58.50

58.64

58.61

58.63

58.66

58.75

58.90

59.12

59.28

59.25

59.07

58.94

58.83

58.84

58.98

59.20

59.43

59.62

59.70

59.69

59.63

59.52

59.35

2,059.35

+30,000

May

59.15

58.90

58.76

58.67

58.54

58.38

58.26

58.24

58.36

58.54

58.65

58.67

58.62

58.51

58.40

58.37

58.52

58.81

59.30

59.90

60.64

61.32

61.97

62.63

63.19

63.65

64.05

64.27

64.45

64.58

64.68

2,064.68

+503,000

June

64.80

64.88

64.97

65.05

65.02

64.88

64.65

64.33

63.97

63.63

63.32

62.97

62.59

62.24

62.30

62.42

62.43

62.38

62.35

62.40

62.47

62.56

62.58

62.40

62.10

62.07

62.07

62.12

62.18

62.23

2/362.23

-234,000

July

62.25

62.30

62.33

62.19

62.12

62.15

62.19

62.32

62.42

62.42

62.38

62.30

62.29

62.17

62.18

62.27

62.33

62.36

62.38

62.38

62.37

62.23

62.17

62.14

62.22

62.19

62.24

62.24

62.25

62.30

62.30

2,062.30

+6,000

Aug.

62.30

62.30

62.39

62.38

62.31

62.26

62.19

62.19

62.21

62.22

62.28

62.32

62.30

62.29

62.32

62.34

62.36

62.35

62.39

62.39

62.39

62.38

62.39

62.40

62.44

62.46

62.41

62.38

62.42

62.40

62.40

2,062.40

+10,000

Sept.

62.44

62.42

62.41

62.40

62.37

62.39

62.45

62.54

62.51

62.52

62.49

62.42

62.37

62.35

62.15

61.88

61.65

61.37

61.11

60.84

60.61

60.42

60.27

60.10

59.98

59.89

59.91

59.92

59.98

60.04

2,060.04

-221/300

Calendar year 1955..................... * +110,000

Water year 1955-56..................... * -112,000

t Elevation, In feet, at end of month.

* Change in contents in acre-feet.

Note. Add 2,000 ft to obtain elevation above mean sea level.
230 PEND OREILLE RIVER BASIN

Priest lake at outlet, near Coolin, Idaho

Location. Lat 48°29'30", long 116°53'00", in SE£ sec. 5, T. 59 N., R. 4 W., half a mile 

east of outlet and 1-jj- miles northwest of Coolin.

Drainage area. 572 sq mi.

Records available.--June 1911 to September 1913 (fragmentary gage-height records at 

Coolin , published as part of records for Priest River at outlet of Priest lake, at 

Coolin), April 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,434.64 ft above mean sea level, datum of

 T929, supplementary adjustment of 1947. June 18, 1911, to Sept. 30, 1913, staff gages 

at Coolin at different datums. Apr. 21, 1928, to Oct. 18, 1939, staff gage at site 

400 ft from lake outlet at present datum.

Extremes.--Maximum gage height during year, 6.23 ft May 26, 27; minimum, 0.18 ft Mar. 20.

 1928-56: Maximum gage height, 6.46 ft May 29, 30, 1948; minimum, -0.17 ft Mar. 28, 

1955.

Remarks.--Flow from Priest lake is regulated to hold lake at heights desirable for recreation interests during summer months and storage is released for power use downstream 

during winter months. Storage began Aug. 9, 1950. Prior to Aug. 9, 1950, some regulation resulted from logging operations in the outlet channel.

Cage height, In feet, at 12 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

3.11

3.08

3.06

3.05

3.04

3.00

2.96

3.00

3.13

3.26

3.28

3.26

3.20

3.14

3.09

3.04

3.00

2.95

2.93

2.91

2.88

2.88

2.88

2.93

3.02

3.12

3.19

3.15

3.05

2.88

2.75

Nov.

2.62

TT52

2.45

2.37

2.33

2.23

2.13

2.03

1.99

1.92

1.87

1.75

1.65

1.56

1.47

1.42

1.33

1.34

1.30

1.24

1.18

1.13

1.13

1.14

1.10

1.10

1.04

1.00

.96

.95

Dec.

0.93

.90

.85

.81

.80

.78

.75

.72

.70

.69

.73

.74

.70

.66

.66

.64

.62

'765 .61

.69

.74

.75

.75

.75

.77

.86

.88

.86

.84

.83

.80

Jan.

0.81

.80

.88

.90

790

.88

.88

.86

.84

.82

.80

.78

.78

.75

.75

.75

.74

.71

.70

.67

.67

.66

.66

.64

.62

.58

.57

.56

.53

.50

.48

Feb.

~T4T 0.44

.40

.39

.38

.36

.34

.34

.32

.31

.33

.31

.30

.29

.27

.25

.24

.23

754

.27

.34

.33

.32

.33

.33

.32

.33

.38

.37

Mar.

0.37

.37

.38

.39

.37

.35

.36

.34

.34

.32

.30

.28

.28

.26

.24

.23

.21

.21

.19

7T9

.19

.20

.23

.24

.26

.31

.33

.34

.36

.41

.44

Apr.

"TiT 0.45

.47

.49

.52

.54

.57

.58

.60

.63

.67

.74

.81

.92

1.08

1.27

1.46

1.63

1.82

2.05

2.33

2.68

2.98

3.19

3.33

3.46

3.53

3.60

3.63

3.66

May

3.69

3.67

3.63

3.57

3.52

3.49

3.45

3750

3.56

3.72

3.83

3.87

3.87

3.84

3.86

3.98

4.19

4.49

4.80

5.17

5.49

5.69

5.82

6.07

6.20

6.23

eTTs

6.13

6.07

6.04

6.01

June

6.00

S799

5.87

5.82

5.70

5.52

5.31

5.11

4.94

4.81

4.68

4.52

4.35

4.25

4.18

4.13

4.07

3.97

3.87

3.79

3.68

3.57

3.44

3.33

3.21

3.13

3.12

3.12

3.12

3.10

July

3.08

3.05

3.02

3.01

3.01

3.04

3.03

3.02

3.01

3.01

3.01

2.99

3.06

3.11

37IT

3.08

3.06

3.03

3.01

2.98

2.97

2.97

2.97

2.98

2.97

2.97

2.95

2.95

2.94

?794

2.94

Aug.

2.93

5794"

2.98

3.00

3.01

3.02

3.03

3.05

3.05

3.06

3.06

3.07

3.07

3.08

3.08

3.08

3.08

3.08

3.08

3.08

3.07

3.07

3.07

3.06

3.06

3.05

3.05

3.03

3.11

37TT

3.09

Sept.

3.08

375B"

3.04

3.02

3.01

3.00

3.00

2.99

2.98

2.98

2.97

2.96

2.95

FT55

2.95

2.95

2.95

2.95

2.95

2.96

2.96

2.95

2.96

2.95

2.96

2.97

2.97

2.98

3.04

3.05
PEND OREILLE RIVER BASIN 

Priest River near Cool in, Idaho

231

Location. Lat 48°26'50", long 116°53«50" p in SE£ sec. 19, T. 59 N., R. 4 W., on left bank 

190 ft downstream from Dickensheet Bridge, 2| miles downstream from Binarch Creek, 

3 miles southwest of Coolin, and 5 miles downstream from outlet of Priest Lake.

Drainage area.--611 sq mi.

Records available.--October 1948 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 2,338.24 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947.

Average discharge.--8 years, 1,398 cfs (1,012,000 acre-ft per year).

Extremes.--Maximum discharge during year, 8,130 cfs May 27 (gage height, 8.15 ft); minimum, 123 cfs Sept. 26 (gage height, 1.89 ft).

1948-56: Maximum discharge, that of May 27, 1956; minimum recorded, 36 cfs Aug. 1, 

1951 (gage height, 1.32 ft), but may have been less Sept. 11, 1953, when stage was 

below intake.

Remarks.--Records excellent except those computed from estimated gage heights, which are 

good. Plow partly regulated by Priest Lake (see preceding page).

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 

2.6 

3.0 

3.5

135

190

355

575

925

4.0 

5.0 

6.0 

7.0 

8.1

1,410

2,670

4,240

6,000

8,130

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

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

407 

635

680

720 

861

845

697

427

410

710

959

1,250

1,480

1,430

1,400

1,340

1,310

1,270

1,240

1,230

937

674

668

507

270

292

612

1,730

2.780 

2,630

*2,470

32,871

1,060

65,200

Nov.

2,360 

2,240

2,170

2,280 

2,420

2,320

2,200

2,110

2,030

1,980

1,930

1,820

1,710

1,640

1,560

1,490

1,410

1,390

1,380

1,340

1,290

1,230

1,200

1,200

1,210

1,190

1,160

1,120

1,080 

1,060

49,520

1,651

98,220

Dec.

1.060 

1,040

1,010

976 

950

934

901

885

885

861

877

901

885

869

*845

838

815

808

822

861

893

909

925

917

909

976

1,030

1,030

1,010 

993

984

28,599

923

56,730

Jan.

976 

968

1,000

1,060 

1,060

1,050

1,040

1,020

1,000

984

968

950

942

934

917

925

917

901

893

877

*861

861

869

853

838

815

808

792

b770 

b756

b735

28,340

914

56,210

Feb.

b714 

b694

687

674 

668

661

654

635

635

g623

g617

g623

g617

g611

g605

g593

g581

581

575

BaT

617

642

629

*629

629

623

623

642

661

18,324

632

36,350

Mar.

654

642

654

668 

661

648

648

642

635

623

b611

605

599

587

581

575

563

557

551

545

551

557

575

587

605

642

668

674

680 

707

742

19,237

621

38,160

Apr.

756 

763

778

800 

830

838

*853

8S1

877

917

950

1,030

1,100

1,200

1,360

1,530

1,680

1,830

2,020

2,240

2,560

3,020

3,400

3,750

g3,930

g4,070

g4,190

g4,260

g4,310 

g4,560

61,063

2,035

121,100

May

g4,380 

g4,390

g4,340

*g4,260 

4,160

4,070

4.010

4,040

4,140

4,260

4,410

4,530

4,560

4,530

4,500

4,580

4,800

5,140

5,570

6,040

6,610

7,040

7,330

7,630

*7,950

8,050

8,030

7,950

7,850 

7,710

7,690

174,550

5,631

346,200

June

7,650 

7,610

7,470

7,330 

7,200

6,970

6,700

6,360

6,080

5,860

5,680

5,480

5,230

5,030

4,890

4,820

4,750

4,630

4,480

4,380

*4,220

4,070

3,940

3,770

3,620

3,220

2,230

1,740

1,740 

1,750

148,900

4,963

295,300

July

1,760 

1,730

1,650

1,600 

1,530

1,490

1,430

1,370

1,280

1,220

1,200

1,150

1,150

1,170

1,170

1,170

1,160

1,150

1,140

1,010

*800

642

575

521

504

504

498

471

438 

400

337

32,220

1,039

63,910

Aug.

283 

245

218

222 

218

211

211

214

222

222

222

229

237

241

245

245

245

241

241

249

257

270

292

301

*310

274

265

265

324 

370

595

7,984

258

15,840

Sept.

405 380"

355

375 

319

274

274

274

274

274

249

237

237

218

200

181

181

175

178

190

178

155

152

150

150

135

T42

142

145 

145

6,744

225

13,380

Calendar year 1955: Max 6,520 Mln 214 Mean 1,443 Ac-ft 1,044,000

Water year 1955-56: Max 8,050 Mln 135 Mean 1,662 Ac-ft 1,207,000

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

g Computed from gage heights estimated on basis of recorder record for Priest Lake near Coolin.

4t,7240 O -58 -It
232 PEND OREILLE RIVER BASIN

Priest River near Priest River, Idaho

Location.--Lat 48°13', long 116°55', in NE^SEi sec. 11, T. 56 N., R. 5 W., on right bank

500 ft downstream from Saddler Creek, a quarter of a mile downstream from Lower West

Branch, 2| miles north of Priest River, and 3? miles upstream from mouth.

Drainage area.--902 sq mi.

Records available.--June 1903 to April 1905, November 1910 to April 1911, May to December 

1923, February 1929 to September 1956. Prior to October 1930, published as "at Priest 

River."

Gage. Water-stage recorder. Altitude of gage is 2,090 ft (from river-profile map).

 Prior to May 15, 1929, and Sept. 18, 1929, to Apr. 28, 1930, staff gages at site 

3 miles downstream at altitude about 40 ft lower. June 4 to Sept. 17, 1929, and 

Apr. 29 to Sept. 11, 1930, staff gages at or near present site at present datum.

Average discharge.--28 years (1903-4, 1929-56), 1,630 cfs (1,180,000 acre-ft per year).

Extremes. Maximum discharge during year, 9,690 cfs May 26 (gage height, 8.64 ft); minimum, 276 cfs Sept. 27 (gage height, 0.79 ft).

1903-5, 1910-11, 1923, 1929-56: Maximum discharge, 10,500 cfs May 29, 30, 1948; 

maximum gage height, 8.97 ft May 29, 1948; minimum discharge, 170 cfs Sept. 13, 1953 

(gage height, 0.48 ft).

Remarks. Records excellent except those for periods of ice effect, which are good. No 

diversion above station. Some regulation on tributary and, since Aug. 9, 1950, by low 

buttress and stoplog dam on Priest River three-quarters of a mile downstream from lake 

outlet.

Revisions (water years).--WSP 572: 1903-5.

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 Mar. 24 to May 11, May 22-24)

Oct. 1 to May 24 May 25 to Sept. 3O

1.2 462

1.5 638

2.0 979

3.0 1,820

4.0 2,S20

6.0 5,400

8.0 8,400

8.6 9,390

0.8 

1.0 

1.5 

2.0 

3.0

280

375

680

1,040

1,910

4.0 3,000

6.0 5,640

8.0 8,670

8.7 9,790

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

462 632

814

814

1,020

1,040

987

734

727

1,110

1,460

1,350

1,800

1,760

1,690

1,630

1,590

1,530

1,490

1,470

1,430

905

884

884

663

601

620

1,120

2,980

*5.000

2,830

40,027

1,291

79,390

Nov.

2,670 

2,530

2,570

2,680

2,910

2,740

2,610

2,500

2,420

2,410

2,320

2,160

2,020

1,950

1,830

bl,730

bl,670

1,660

1,650

1,600

1,560

1,500

1,470

1,480

1,690

1,730

1,580

1,480

1,420

1,390

59,930

1,998

118,900

Dec.

1,360 

1,340

1,300

1,250

1,210

1,200

1,170

1,150

1,140

1,110

1,170

1,600

bl,380

bl,320

bl,300

*bl,280

bl,240

bl,210

bl,260

1,400

1,690

2,230

2,140

1,890

1,700

1,900

2,370

2,200

2,000

bl,860

bl,770

47,140

1,521

93 , 500

Jan.

bl,680 

1,610

1,630

1,910

2,010

1,850

1,800

1,750

1,660

1,590

1,540

1,510

1,490

1,450

1,420

1,420

1,400

1,350

*1,330

1,300

1,260

1,260

1,330

1,280

1,200

1,160

1,190

bl,150

bl,100

bl,050

b960

44,640

1,440

88,540

Feb.

b920 

b940

b960

b980

bl.OOO

1,000

994

987

b950

b980

972

957

935

b910

b850

b810

b850

b880

b890

884

912

1,020

1,020

*957

927

912

905

927

1,040

27,269

940

54,090

Mar.

1,000 

972

1,040

1,020

987

b950

942

935

920

905

b830

b860

877

855

848

855

884

912

957

1,020

1,050

1,160

1,470

1,670

1,850

2,240

2,090

1,950

1,900

2,040

2,200

38,189

1,232

75,750

Apr.

2,160 

2,120

2,120

2,230

2,290

*2,130

2,160

2,070

2,080

2,280

2,560

2,790

3,000

3,330

3,820

4,300

4,370

4,380

4,570

4,850

5,300

5,960

6,480

6,620

6,500

6,380

6,270

6,170

6,100

6,000

121,390

4,046

240,800

May

5,920 

5,890

5,720

*5,540

5,390

5,220

5,150

5,200

5,400

5,620

5,820

5,890

5,850

5,780

5,740

5,830

6,160

6,690

7,300

7,820

8,400

8,780

8,930

9,270

*9,580

9,650

9,580

9,440

9,260

9,090

8,990

218,880

7,061

434,100

June

8.950 

8,910

8,780

8,650

8,510

8,190

7,820

7,440

7,090

6,820

6,580

6,360

6,070

5,850

5,810

5,790

5,640

5,440

5,290

5,190

»5,010

4,830

4,630

4,440

4,270

4,080

3,260

2,340

2,260

2,250

176,530

5,884

350,100

July

2,260 

2,220

2,240

2,140

2,080

1,990

1,880

1,800

1,670

1,570

1,520

1,470

1,480

1,650

1,580

1,480

1,450

1,430

1,410

*1,380

1,200

965

862

778

729

708

708

687

667

596

43,222

1,394

85,730

Aug.

514 

484

466

478

442

419

408

397

397

397

3S6

386

392

397

397

408

402

392

392

392

397

408

419

448

460

*472

436

424

484

 g4T 544

13,382

432

26,540

Sept.

33~8 544

502

496

514

424

408

408

402

397

402

375

370

365

355

340

320

320

316

320

335

320

302

298

294

298

289

?89

302

330

11,173

372

22,160

Calendar year 1955: Max 7,540 Mln 338 Mean 1,880 Ac-ft 1,361,000

Waber year 1955-56: Max 9,65O Mln 289 Mean 2 ,3OO Ac-ft 1,670,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
PEND OREILLE RIVER BASIN 233

Pend Oreille River at Newport, Wash.

Location. Lat 48°11', long 117°02', in SE^SWir sec. 24, T. 56 N., R. 6 W. , on "left bank at 

Newport, 0.2 mile upstream from bridge on U. S. Highway 2, a quarter of a mile east of 

Idaho-Washington State line, and 1.6 miles downstream from Albenl Falls Dam.

Drainage area. 24,200 sq mi, approximately.

Records available . June 1903 to September 1941, October 1952 to September 1956. Prior to 

October 1921, published as Clark Fork at Newport, Wash., October 1921 to September 1937, 

as Clark Fork at Priest River, Idaho, and October 1937 to September 1941, as Pend 

Oreille River at Priest River, Idaho.

Gage (revised) .--Water-stage recorder. Datum of gage is 2,000.00 ft above mean sea level, 

datum of 1929, supplementary adjustment of 1947. Prior to Sept. 22, 1928, staff or 

wire-weight gages at Priest River, Newport, or Metaline Falls at various datums (see 

description, WSP 532, p. 92). Sept. 22, 1928, to Sept. 30, 1935, water-stage recorder 

at Priest River at datum 2,040.14 ft above mean sea level, and Oct. 1, 1935, to 

Sept. 30, 1941, at datum 2,000 ft above mean sea level, datum of 1929. Since December 

1952, auxiliary water-stage recorder 2.74 miles downstream from base gage.

Average discharge.--42 years (1903-41, 1952-56), 25,140 cfs (18,200,000 acre-ft per year).

Extremes.--Maximum discharge during year, 127,000 cfs June 4-7; maximum gage height, 51.73 

ft June 6; minimum discharge, 5,710 cfs Sept. 8 (gage height, 28.55 ft).

1903-41, 1952-56: Maximum discharge, 136,000 cfs June 15, 1913, June 21, 1933; minimum, 2,200 cfs Dec. 12, 1919.

Maximum elevation known, about 2,064 ft in June 1894, present datum, from watersurface profiles (discharge, about 200,000 cfs).

Remarks.--Records excellent. Flow regulated at Albeni Falls Dam and affected by storage 

in Pend Oreille Lake (see p. 229), Flathead Lake (see p. 222 ), Hungry Horse Reservoir 

(see p. 218 ), and several smaller reservoirs (see p. 238 ). Diversions above station 

for irrigation of about 337,600 acres (1946).

Revisions (water years).--WSP 532: 1903-11.

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

30

31

Totan

Mean

Ac- ft

Oct.

2O,9OO

21,000

22,000

26,400

26,700

26,700

27,000

27 , 100

27,600

28.700

19,500

15,800

14,200

10,400

14,900

15,500

17,100

15,700

15,600

15,800

13,200

10,400

10,200

13,000

18,200

19,900

13,900

1O , 6OO

10,200

*10,300

1O.6OO

548,100

17,680

*1,087

Nov.

11,100

10,100

10,300

10,200

9,200

9,300

10,300

9,950

9,990

10,300

15,600

11,900

10,500

25,200

39,900

45,200

44,900

39,900

34,000

31,600

25,900

19,900

20,900

20.0OO

20 , 500

22,600

20,800

20,400

23,200

22,900

----- -

615,440

20,510

tl,221

Dec.

25,300

24,700

24,300

19,200

23 , 500

23,000

19,200

19,400

18 , 600

19,100

15,200

21,400

19,800

23,000

23,800

*22,100

19,000

19,100

20.OOO

22,200

26,000

23,900

28,400

27,500

27,200

27,700

27,200

27,000

27,300

25,500

22,700

712,300

22,980

*1,413

Jan.

19,900

18,700

20,500

20,500

21,700

25,700

26,100

26,200

25, 2OO

21,000

20,900

20,800

20,900

22,000

20,600

23,300

24,900

25,300

25,700

25,600

23,300

*20,900

20,100

19,000

20,900

20,800

20,500

19,700

18,000

17,500

17 , 200

673,200

21,720

H.335

Feb.

2O,SOO

26,100

30,700

30,500

31,400

28,200

25,000

25,000

25,000

25,200

24,800

25,300

25,000

24,700

27,000

26,400

17,600

8.400

10,000

2O,9OO

22,500

22,600

21,800

23,300

*19,900

19,700

23,700

22,200

22,000 -

------

674,700

23,270

*1,338

Mar.

22,300

22,200

20,200

22,500

25,100

20,100

19,200

18,700

19,800

15,400

15,700

20,900

20,600

12,300

19,400

19,200

12,800

14,500

21,400

18,400

19,800

26,100

29,500

31,300

37,300

44,700

48 , 600

51,100

50,400

48,400

47,800

822,600

26,540

*1,632

Apr.

47,400

41,900

39,500

41,000

38,300

33,300

*31,1QO

31,400

31,300

33,500

36,9OO

39,000

39,500

4O.9OO

43 , 100

49,600

62,900

73,400

75,900

76,600

75,700

76,000

78,900

80,6OO

81,800

82,400

82,200

ei'goo

82,100

91,100

tl, 708.1

56,940

*3,398

May

79,500

7S.OOO

70,500

*66,100

66,200

66,200

63,800

65,200

63,400

65,000

69,700

73,800

73,700

73,700

72,600

72,000

72.2OO

73.3OO

76,000

79,600

82,400

89,700

94,200

98,900

104,000

»111,000

115,000

11 S.OOO

120,000

121,000

123,000

1 2, 595.7

83,730

*5,148

June

124,000

125.000

»126,000

126.000

127,000

127.OOO

125.OOO

123,000

120,000

118, OOO

113,000

111,000

105,000

91,400

72,300

62,700

64,800

66,400

66,200

*63,300

62,3OO

67,600

77,700

84,700

77,200

63 , 600

57,800

53,000

50,400

48.000

------

*2, 699.4

89,990

*5.354

July

47 , 900

49,OOO

47,900

47,700

42,700

36,500

34,500

34.OOO

34,600

39,200

41,300

40,100

36,100

33,100

30,900

29,200

28,900

27.1OO

24,400

24,700

*26,400

25,400

24,100

22,000

19,900

20,100

19,700

20,10O

20,000

18,300

16,100

Aug.

16,800

16,200

16,600

15,400

15,500

15,500

14,500

13,200

11,500

11,000

8,750

9,070

10,900

10,500

10,300

10,400

10,900

10,400

10,100

10,700

10,900

1O,60O

9,720

9,480

7,500

9,400

11,700

10,200

9,750

9,840

10,300

959,8001357,610

30,960 11,540

tl,904 709,300

Sept.

* 11, 500

10,700

9,430

10,100

10,000

9,260

6,210

6,510

11,100

13,500

15,500

16,900

17 , 000

16,600

24,200

25,700

26,000

26,700

26,800

27,500

25,200

21,600

21,700

21,600

21,600

20,100

15 , 900

13,800

11,700

11,300

505,510

16,850

tl,003

Calendar year 1955: Max 78,5OO Min 7.O2O Mean 26,400 Ac-ft 19,110,000

Water year 1955-56: Max 127,000 Min 6,210 Mean 35,170 Ac-ft 25,53O,OOO

Discharge measurement made on this day. 

* Expressed in thousands.

Note. No gage-height record at one or both gages Feb. 4-13, 16-25; discharge based on flow 

through Albeni Falls Dam and powerplant as furnished by Corps of Engineers.
234 FEND OREILLE RIVER BASIN 

Calispell Creek near Dalkena, Wash.

Location. Lat 48°14 I 40", long 117°20'30", in SW£ sec. 26, T. 32 N. , R. 43 E. , on left 

bank 2 miles upstream from Calispell Lake, 4.8 miles west of Dalkena, and 9 miles upstream from mouth.

Drainage area.--67.8 sq mi.

Records available. August 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 2,070 ft (from topographic map).

Average d is charge.--6 years, 80.1 cfs (57,990 acre-ft per year).

Extremes. Maximum discharge during year, 904 cfs Apr. 22 (gage height, 6.78 ft); minimum, 4.6 cfs Sept. 26 (gage height, 2.30 ft); minimum daily, 9.2 cfs July 27, 28. 

1950-56: Maximum discharge, that of Apr. 22, 1956; minimum, that of Sept. 26, 

1956.

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

which are poor. Some diversion above station for irrigation. Some regulation by 

Power Lake.

Rating tables, water year 1955-56, except periods of ice 

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

(Shifting-control (Shifting method used Apr. 14, 15)

Oct. 1 to Apr. 15

ffect (gage 

second)

Apr. 16 to Sept. 30

2.7 

3.0 

3.5 

4.0 

6.1

35

93

173

642

2.3 

2.5 

2.7 

3.0

4.6

19

3.5 

4.0 

5.0 

6.8

108

183

403

910

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

18.5

17.5

1775

17.5

24

23

19.5

19.5

55

78

*42

30

25

24

22

21

20

22

22

22

24

28

28

24

21

33

29

21

22

24

18

812.0

26.2

1,610

Nov.

22

24

29

41

40

33

22

27

25

29

28

28

28

28

28

26

27

29

32

40

35

30

28

27

26

25

25

24

24

23

853

28.4

1,690

Dec.

22

22

23

23

*24

22

21

30

43

46

47

48

b41

b35

b30

b27

b24

b20

b20

b20

60 18.5

130

99

69

S6

242

182

155

232 

364

2,225.5

71.8

4,410

Jan.

~J6 150

75

84

119

125

96

85

78

*75

73

70

69

67

66

66

60

57

55

54

53

54

57

54

b52

b52

b54

b54

b56

b58 

b62

2,206

71.2

4,380

Feb.

81

Ja

73

66

63

60

42

37

37

40

42

39

37

b36

35

34

33

32

32

32

36

41

41

36

34

32

32

*33

37

1,251

43.1

2,480

Mar.

36

35

40

42

37

b35

33

33

33

32

b32

b32

32

31

31

32

35

39

45

53

56

58

89

145

186

222

*214

186

173

186 

208

2,441

78.7

4,840

Apr.

188

177

T7T

206

222

202

198

190

200

242

303

353

406

516

635

*723

694

642

636

*683

796

883

853

838

761

660

568

538

506

451

14,447

482

28,660

May

408

372

336

313

292

271

278

343

441

462

446

391

336

*299

287

315

408

490

530

555

509

451

396

381

341

308

285

244

218

199 

185

11,068

357

21,950

June

174

166

156

153

150

141

135

131

128

127

121

120

117

122

128

114

84

69

69

79

63

58

58

52

49

47

46

43

41

41

2,982

99.4

5,910

July

41

42

47

56

*46

48

44

40

39

36

35

35

38

76

48

39

38

35

34

31

28

30

32

31

34

*22

3.2

9.2

11.5

22 

23

1,099.9

35.5

2,180

Aug.

22 13.5

28

36

26

24

23

22

21

20

20

20

19.5

21

19.5

19

19

18.5

18

17.5

17

16

16

17

17.5

19.5

21

20

21

23 

20

635.5

20.5

1,260

Sept.

17.5

16

*15.5

16

15.5

14.5

14.5

15.5

14.5

13.5

13.5

13.5

11.5

11.5

11

11

11

11

13.5

10

10

11

12.5

20

25

16

23

24

"SI 26

459.0

15.3

910

Calendar year 1955: Max 408 Mln 15.5 Mean 67.3 Ac-ft 48,690

Water year 1955-56: Max 883 Min 9.2 Mean 111 Ac-ft 80,280

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Nov. 16 to Dec. 4; Dec. 14-19; Feb. 3-5, 10-13, 15-19; discharge estimated on basis of recorded range in stage, weather records, and records for stations on nearby 

streams.
FEND OREILLE RIVER BASIN 235

Fend Oreille River below Box Canyon, near lone, Wash.

Location.--Lat 48°46'50", long 117°24'40", in SE^NE^ sec. 19, T. 38 N., R. 43 E., on left 

bank 1,000 ft downstream from Box Canyon Dam and 4 miles north of lone.

Drainage area. 25.000 sq mi, approximately. 

Records available. October 1952 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to Mar. 29, 1954. staff gage at site 300 ft upstream at same datum. Mar. 29 to Aug. 25, 1954, staff gage at present site and datum.

Extremes.--Maximum discharge during year, 125,700 cfs June 6 (elevation, 2,011.74 ft); 

minimum, 3,400 cfs Oct. 18 (elevation, 1,980.82 ft).

1952-56; Maximum discharge, that of June 6, 1956; minimum, that of Oct. 18, 1955, 

but may have been less sometime during period of no gage-height record Sept. 6,7, 

1953.

Flood in June 1948 reached elevation of 2,018.0 ft, from floodmarks (discharge, 

167,000 cfs).

Remarks. Records excellent. In 1946 there were diversions for irrigation of about

340,000 acres, and there probably has not been any appreciable change since that time. 

Flow affected by natural storage in Fend Oreille Lake (see p. 229), som3 regulation by 

Flathead Lake (see p. 222 ), Hungry Horse Reservoir (see p. 218), Box Canyon Dam, and by 

smaller reservoirs in Pend Oreille River basin in Montana (see p.238).

Rating table, wate

1,982.4

1,983.0

1,984.0

1,986.0

1,989.0

1,993.0

ear 1955-56 (elevation, in feet, and discharge, 

in cubic feet per second)

6,580

7,900

10,300

15,900

25,400

35,900

1,995.0

1,998.0

2,002.0

2,006.0

2,012.0

47,400

59,400

77,400

97,000

127,000

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.

20,300

20,500

20,400

22,700

25,400

25,700

26,600

27,400

27,700

27,700

25,100

20,700

16,500

11,400

11,800

13,200

15,000

12,400

18,400

17,300

13,200

11,000

10,900

*11,200

14,300

18,300

16,700

12,400

1 1 , 300

10,500

10,200

546,200

17,620

+ 1,083

Nov.

10,300

9,470

8,750

8,800

9,920

9,110

8.630

8,840

8,840

12,200

15,400

14,200

10,200

14,300

28,800

39,500

43,000

44,200

40,000

35,500

29,500

23,200

20,500

21,200

19,900

21,300

21,200

20,200

21,000

23,800

601,760

20,060

+1,194

Dec.

24,000

25,100

25,100

24,400

»20,200

22,100

21,800

17,900

19,400

18,300

17,900

17,500

18,900

21,200

21,400

23,100

19,400

18,800

19,000

20,000

23,300

28,200

28,000

28,000

28,100

28,100

27,500

29,900

29,400

28,000

28 ,800

722,600

23,310

+1,433

Jan.

21,100

19,000

19,300

17,100

20,300

22,700

27.500

26,400

25,900

* 23, 000

27,000

27,000

24,300

19,400

23,400

21,800

19,400

19,600

22,500

22,200

22,500

22,600

21,400

21,800

21,600

21,100

20,100

19,400

18,000

15,900

16,200

669,500

21,600

* 1,328

Feb.

18,100

21,300

25,700

27,600

28,100

28,200

27,300

26,900

25,400

24,100

24,900

24,800

25,200

26,300

25,400

22,500

23,000

15,300

10,800

12,700

21,000

22,000

22,600

22,900

23,000

18,100

22,800

»23,300

23,000

662,300

22,840

+1,314

Mar.

22,000

22,600

18,600

22,000

22,500

19,700

22,400

19,700

18,900

18 , 600

16,100

15,600

17,800

18 , 900

18,000

18,300

17,600

14,500

15,700

19,400

16,300

21,100

27,100

28,800

32,900

40,700

*46,400

52,200

54,200

53*900

804,500

25,950

+1,596

Apr.

52,100

49,300

42,700

42,100

42,200

39,600

36,700

34,700

*33,800

33,800

35,600

37,700

40,500

43,200

42,900

49,000

55,000

67,200

73,600

76,400

74,300

81,000

78,700

*81,400

86,800

84,200

84,100

83,800

83,500

83,000

+ 1,748.9

58,300

+3,469

May

82,300

81,100

79,100

73,300

70,100

68,800

65,000

67,400

*66,300

66,700

68,100

72,100

76,100

75,600

73,400

74,200

74,400

75,200

76,500

78,800

83,600

87,800

91,800

97,200

102,000

106,800

110,800

*114,100

116,900

119,200

120,800

+ 2,615.5

84,370

+5,188

June

122,200

123,000

123,500

124,600

125,200

125,000

124,800

123,800

121,900

119,500

*116,800

113, SOU

111,100

105,200

93,200

74,200

66,700

66,200

67,000

66,200

62,900

63,000

67,800

77,800

80,600

72,700

»62,400

53,900

52,200

Si, 7 00

+ 2,758.9

91,960

+ 5,472

July

48,400

47,000

48,200

49.000

47,500

42,800

39,600

37,500

*36,100

35,900

38 , 500

40,200

39,300

37,500

32,100

31, £00

29,200

30,100

28,300

27,100

28,600

24,100

24,600

22,900

18,200

23,000

20,700

*20,700

20,800

20,300

16,300

+ 1,006

32,450

+1,995

Aug.

16,100

16,800

16,900

16,300

15,400

15,400

15,000

13,800

11,300

10,200

9,400

9,280

10,200

10,900

11 , 000

10,500

10,600

10,800

10,500

14,400

7,570

11,000

10,400

9,680

9,640

9,400

10,700

9,780

9,350

9,490

10,100

361,690

11,670

717,400

Sept.

10,300

11,400

*10,500

9,800

10,100

9,610

8,160

6,780

7,790

11,700

15,400

17,700

18,100

16,900

17,800

19,800

23,700

25,600

26,000

26,500

25,300

23,200

20,700

19,900

20,000

19,900

18 , 500

15,100

13 , 100

11,600

490,940

16,360

973,800

Calendar year 1955: Max 77,700 Mln 6,320 Mean 26,620 Ac-ft 19,270,000

Water year 1955-56: Max 125,200 Mln 6,780 Mean 35,490 Ac-ft 25,760,000

* Discharge measurement made on this day. 

$ Expressed In thousands.
236 PEWD OREILLE RIVER BASIN

Sullivan Creek at Metaline Falls, Wash.

Location. Lat 48°51'40", long 117°21'50", In SW^SW^ sec. 22, T. 39 N., R. 43 E., on right

bank 100 ft downstream from State highway bridge, half a mile upstream from mouth, and

half a mile east of Metaline Falls. Prior to Aug. 24, 1956, at site 120 ft upstream.

Drainage area.--142 sq mi.

Records available. October 1953 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 2,050 ft (from topographic map). Prior 

to Aug. 24, 1956, staff gage at site 120 ft upstream at datum 3.70 ft higher.

Extremes. Maximum daily discharge during year, 2,500 cfs May 22; minimum discharge, 58 cfs 

Sept. 30, but may have been less during period of no gage-height record.

1953-56: Maximum discharge observed, 3,550 cfs June 12, 1955 (gage height, 3.90 ft); 

maximum gage height observed, 4.48 ft May 19, 1954, site and datum then in use; minimum 

discharge, that of Sept. 30, 1956.

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

Flow regulated at low stages by storage in Sullivan Lake. Small diversions above station for municipal and mine water supply.

Cooperation.--Prior to Aug. 24, 1956, gage-height record furnished by Lehigh Cement Co.

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

Day

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

95

2,945

95

5,840

Nov.

90

2,700

90

5,360

Dec.

100

3,100

100

6,150

Jan.

140

4,340

140

8,610

Feb.

100

2,900

100

5,750

Mar.

100 

105

110

120

130

120

115

115

*116

12]

121

118

111

111

114

128

121

L18

114

114

118

121

L25

132

132

L35

196

*253

246

246

253

4,279

138

8,490

Apr.

253 

240

234

234

246

240

240

246

240

240

265

259

265

279

367

415

452

452

520

533

686

942 9"4~2

890

772

*725

694

669

703

652

13,895

463

27,560

May

635 

620

605

590

570

560

550

570

*620

700

800

950

900

860

820

800

850

1,000

1,300

1,700

2,300

2,500

2,200

1,800

1,550

1,340

1,160

1,110

*1,020

1,050

1,160

33,190

1,071

65,830

June

1,300 

1,200

1,050

940

840

765

730

695

660

660

660

*660

650

630

472

430

400

360

335

320

300

290

280

275

*275

310

390

370

352

335

16,932

564

33,580

July

410 

370

335

325

319

319

319

319

*291

273

259

245

245

300

270

232

198

188

188

180

170

170

165

158

148

139

*120

121T

125

130

120

7,150

231

14,180

Aug.

120 

115

113

111

111

102

102

84

84

80

75

84

77

77

75

73

71

68

66

66

66

64

63

62

6?

65

66

64

67

66

63

2,462

79.4

4,880

Sept.

63 

&2

62

*62

62

62

61

61

60

60

60

60

60

60

59_

59

59

59

59

59

59

59

59

59

59

59

59

59

62

63

1,806

60.2

3,580

Calendar year 1955: Max 3,350 Mln 77 Mean 252 Ac-ft 182,100

Water year 1955-56: Max 2,500 Mln 59 Mean 261 Ac-ft 189,800

^ Discharge -Uisanai'ge measurement measurement made on thisn day.

Note.--No gage-height record Oct. 1 to Mar. 8, May 5-8, 10-24, 30, June 1-4, 7, 

5-24, 26, July 4, 6, 14, 15, 20-23,28,29, Aug. 3, 19, 22; discharge Interpolated o 

isls of weather records and records for stations on nearby streams.

9-11, 13, 16-18, 

or estimated on
PEND OREILLE RIVER BASIN 237

Fend Oreille River below Z Canyon, near Metaline Falls, Wash. 

(International gaging station)

Location.--Lat 48°58'50", long 117°20i40", in lot 2, sec. 11. T. 40 N., R. 43 E., on right 

bank "three-quarters of a mile downstream from Z Canyon, if miles south of international 

boundary, 5 miles downstream from Slate Creek, and 10 miles downstream from town of 

Metaline Falls.

Drainage area. 25,200 sq mi, approximately.

Records available.--November 1908 to September 1910 (gage heights only), October 1912 to 

September 1956. Prior to October 1928, published as Clark Fork at Metaline Falls and 

October 1928 to September 1937 as Clark Fork below Z Canyon, near Metaline Palls.

Gage.--Water-stage recorder. Datum of gage is 1,721.18 ft above mean sea level, datum of 

TT929, supplementary adjustment of 1947 (levels by Corps of Engineers). Prior to 

Dec. 19, 1928, staff gages at Metaline Falls 10 miles upstream at datum approximately 

262.2 ft higher.

Average discharge.--44 years (1912-56), 26,560 cfs (19,230,000 acre-ft per year).

Extremes.--Maximum discharge during year, 129,800 cfs June 5 (gage height, 50.90 ft); minimum, 4,470 cfs Aug. 22 (gage height, 9.43 ft); minimum daily, 7,500 cfs Sept. 9.

1912-56: Maximum discharge, 171,300 cfs June 13, 1948 (gage height, 60.25 ft); minimum, 2,500 cfs Dec. 12, 1919 (gage height, -2.4 ft, site and datum then in use).

Maximum stage known, 69.0 ft in June 1894, from floodmarks.

Remarks .--Records excellent. In 1946 there were diversions for irrigation of about

340,000 acres, and there probably has not been any appreciable change since that time. 

Flow regulated at Albeni Falls and Box Canyon Dams and affected by storage in Pend 

Oreille Lake (see p. 229), Flathead Lake (see p. 222), Hungry Horse Reservoir (see 

p. 218), and by smaller reservoirs in Pend Oreille River basin in Montana (see following page).

Cooperation.--This is one of the international gaging stations maintained by the United 

States under agreement with Canada.

Revisions (water years).--WSP 442: 1913.

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

and discharge, In cubic feet per second)

11.0

13.0

16.0

20.0

7,300

12,200

22,600

35,400

30.0

40.0

51.0

65,900

96,400

130,100

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

Ac- ft

Oct.

21,700

21,900

21,900

23,600

26,900

27,200

27,900

28,700

28,800 

29,100

27,900

22,600

19,700

13,500

12,700

14,600

16,500

15,000

17,900

19,600

15,000

12,100

11,800

12,000

14,500

*19,400

19,000

14,500

12,700

11,700 

11,200

591,800

19,090

*1,174

Nov.

11,400

10,900

9,680

10,700

11,100

10,300

9,500

9,850

9,900 

13,300

17,100

16,000

11,600

15,100

30,700

40,600

44,200

44,000

40 , 100

35,900

30,200

24,800

22,200

22,900

21,600

22,900

22,800

21,800

22,500

25,100

638,730

21,290

*1,267

Dec.

26,200

27,100

26,500

25,300

22,300

*24,100

23,300

20,400

20,200 

20,200

20,000

18,400

20,400

22,500

23,300

24,500

22,100

19,400

19,800

21,200

23,800

29,300

29,400

29,500

29,500

29,600

29,000

31,000

31,600

29,000 

51,900

T? 1 , 900

24,900

*1,531

Jan.

23,200

21,300

21,500

19,200

22,300

23,800

29,800

28,400

28,100 

25,400

*28,600

29,100

27,300

21,200

26,000

24,100

21,900

21,600

24,400

24,800

24,400

25,000

23,700

23,800

24,000

23,300

22,400

21,700

20,300

18,000 

17,800

736,400

23,750

*1,451

Feb.

19,000

23,000

27,000

29,200

29,700

29,600

29,100

28,800

27,300 

26,300

27,000

26,700

27,100

28,100

27,400

24,400

24,400

18,000

12,200

13,400

22,500

23,700

24,500

24,600

25,200

21,300

24,800

25,300

*25,300

715,200

24,660

*1,419

Mar.

24,500

24,500

22,100

24,200

24,500

22,800

25,200

22,400

21,500 

21,200

18,900

17,700

20,100

21,500

20,900

20,500

20,600

17 , 500

17,200

22,700

21,800

23,300

29,100

30,700

34,700

41,400

49,700

*53,700

56,200

53 , 800 

56,000

881,000

28,420

*1,747

Apr.

54,300

51,500

45,300

44,000

44,200

42 , 100

39,000

37,000

36,100 

56,000

37,700

40 , 100

42,400

46,200

45,700

51,400

57 , 100

70,200

77,100

80,600

78,500

84 , 800

82,700

84,700

«-91,200

88,800

88,600

88,400

87 , 900

87,300

$1,840.7

61,360

*5,651

May

86,600

85,500

83,300

77,400

73,900

72,100

68,100

70,300

*69,300 

69,600

71,000

74,600

79,400

79,400

76,900

77,200

77,800

78,500

79,800

82,200

87,000

91,700

95,600

101,000

105,900

110,300

114,400

117,800

*L2 0,900

123,200 

125,000

$2,725.7

87,930

*5,406

June

126,500

127,200

127,800

128,800

129,500

129,300

129,000

128,000

126,400 

124,000

121,200

»118 , 000

115,200

109,800

98,200

79,400

69,400

68,300

68,900

68,300

65,200

64,600

69,100

79,000

83,000

*75,500

65,000

55,600

52,600

-5 l'?°?

$2,855.4

95,180

*5,664

July

49,500

47,500

48,400

50,000

48,500

44,300

41,000

38,700

37,000 

*36,500

38,900

40,800

40,300

38,400

33,200

32,600

30,600

30,600

29,500

27,900

29,500

25,200

26,200

27,200

18,400

23,800

* 21, 800

*21,500

21,600

21,400 

17 ,.500

tl, 038.3

33,490

*2,059

Aug.

16,600

17,400

17 , 600

17,100

16,200

 16,000

15,900

14,900

12,200 

10,400

9,900

9,450

9,980

11,500

11,800

10,900

11,300

11,400

11,100

13,700

10,200

10,400

11,200

10,100

10,000

9,280

11,900

10,400

10,000

9,800 

10,700

379,310

12,240

752,400

Sept.

10,700

11,900

12,000

*10,300

10,800

10,700

9,040

7,560

7,500 

11,100

15,900

18,600

19,700

18,200

18,900

20,400

24,500

26,700

27,200

27,700

26,800

25,000

22,200

21,000

21,200

21,100

20,100

16,800

14,800

13,000

521,400

17,380

*1,034

Calendar year 1955: Max 81,000 Mln 6,180 Mean 28,020 Ac-ft 20,290,000

Water year 1955-56: Max 129,500 Min 7,500 Mean 37,420 Ac-ft 27,170,000

* Discharge measurement made on this day.

* Expressed in thousands.
238 PEND OREILLE RIVER BASIN

Smaller Reservoirs in Fend Oreille River basin, in Montana

Georgetown Lake on Flint Creek, 2 miles west of Southern Cross. Storage began about 1905 

for pumpage into Warm Springs Creek for use of reduction works of Anaconda Copper 

Mining Co. at Anaconda, or for release through Flint Creek for power development. 

Usable capacity, 31,000 acre-ft. Records furnished by The Montana Power Co.

East Fork Rock Creek Reservoir on East Fork Creek, 14 miles southwest of Philipsburg. 

Storage began in 1936 for irrigation in Flint Creek Valley; usable capacity, 16,000 

acre-ft. Records furnished by Montana State Water Conservation Board.

Nevada Creek Reservoir on Nevada Creek, 7 miles west of Finn. Storage began in 1939 for 

irrigation; usable capacity, 12,600 acre-ft. Records furnished by Montana State Water 

Conservation Board.

West Fork Bitterroot River Reservoir on West Fork Bitterroot River, 7 miles upstream from 

Nez Perce Creek and 23 miles south of Darby. Storage began in 1940 for irrigation; 

usable capacity, 31,700 acre-ft. Records furnished by Montana State Water Conservation 

Board.

Como Lake on Rock Creek, 4 miles northwest of Darby. Storage began in 1909 for irrigation; 

usable capacity, 34,800 acre-ft. Records furnished by Bitterroot Irrigation District.

Camas Reservoirs comprise a group of four reservoirs in Little Bitterroot River basin, 

which are operated for irrigation. Records furnished by Office of Indian Affairs. 

Little Bitterroot Lake on Little Bitterroot River, 2 miles southwest of Marion; storage 

began in 1918; usable capacity, 24,000 acre-ft. Hubbart Reservoir on Little Bitterroot 

River, 9 miles northwest of Niarada; storage began in 1924; usable capacity, 12,100 

acre-ft. Upper Dry Fork Reservoir on Dry Fork Creek, 4 miles northwest of Lonepine; 

storage began in 1940; usable capacity, 2,700 acre-ft. Dry Fork Reservoir on Dry Fork 

Creek, 1 mile west of Lonepine; storage began in 1921; usable capacity, 4,000 acre-ft.

Mission Valley Reservoirs comprise a group of eight reservoirs in the area east of and 

tributary to Flathead River between Flathead Lake and Jocko River, which are operated 

for irrigation. Records furnished by Office of Indian Affairs. Twin Reservoir, fed 

entirely by canals, 4 miles southeast of Poison; storage began in 1932; usable capacity, 1,210 acre-ft. Pablo Reservoir, fed entirely by canals, 3 miles south of Poison; 

storage began in 1914; usable capacity, 25,000 acre-ft. Lower Crow Reservoir on Crow 

Creek, 6 miles west of Ronan; storage began in 1933; usable capacity, 10,350 acre-ft. 

Kicking Horse Reservoir, fed entirely by canals, 5 miles south of Ronan; storage began 

in 1930; usable capacity, 8,350 acre-ft. Ninepipe Reservoir, fed entirely by canals, 

2 miles northeast of Charlo; storage began in 1911; usable capacity, 14,870 acre-ft. 

McDonald Reservoir on Post Creek, 9 miles east of Charlo; storage began in 1919; usable 

capacity, 8,220 acre-ft. Mission Reservoir on Mission Creek, 4 miles east of St. 

Ignatius; storage began in 1935; usable capacity, 7,250 acre-ft. Tabor Reservoir on 

Dry Creek, 8 miles southeast of St. Ignatlus; storage began in 1919; usable capacity, 

23,000 acre-ft.

Lower Jocko Lake on Middle Pork Jocko River, 15 miles east of Arlee. Storage began in 

1937; usable capacity, 7,600 acre-ft. Records furnished by Office of Indian Affairs.

Thompson Falls Reservoir on Clark Fork, at Thompson Falls, for power development; usable 

capacity, 15,000 acre-ft. Records furnished by The Montana Power Co.

Other reservoirs of small capacity, principally on tributaries of Bitterroot River, are 

operated for irrigation.

Month-end contents, in acre-feet, water year October 1955 to September 1956

Date

Sept. 30. . . .

Oct. 31....

Nov . 30 ....

Dec. 31....

Jan. 31. ...

Feb. 29. ...

Mar. 31....

Apr. 30....

May 31....

June 3O. . . .

July 31....

Aug. 31. ...

Sept. 30. . . .

Georgetown 

Lake

27,800

27,800

27,500

25,880

23,770

21,690

19,150

18,050

21,050

23,050

23,770

22,940

21,800

East Fork 

Rock Creek 

Reservoir

2,620

2,620

2,620

2,620

2,620

2,620

2,620

2,620

a!4,460

a!4,520

12,220

a6,090

3,830

Nevada 

Creek 

Reservoir

7,500

-

-

_

-

-

-

-

a!2,740

10,OOO

alO,050

b6,600

3,500

West Fork 

Bitterroot 

River 

Reservoir

31,700

_

-

_

_

20,OOO

2o,OOO

20,000

31,700

31,700

31,700

31,700

31,700

Como 

Lake

2,320

1,830

3,060

10,000

13,350

15,350

17,380

20,290

34,770

36,31O

28,850

8,300

1,200

Camas 

Reservoirs

32,200

33,120

33,730

33,170

33,800

34,340

37,580

41,840

42,760

41,970

38,440

31,810

29,610

Mission 

Valley 

Reservoirs

11,870

16,470

21,780

26,810

28,640

27,180

29,240

47,280

86 , 800

101,100

81,530

38,320

16,750

Lower 

Jocko 

Lake

120

245

-

_

_

-

-

-

5,810

5,120

2,650

572

789

Thompson 

Falls 

Reservoir

13,520

11,130

13,810

13,250

13,110

13,810

4,640

4,230

8,430

2,700

15,120

11,780

14,390

a. interpolated on oasis 01 readings maae weeKiy or less 

b Figure of contents for first day of following month.
COLUMBIA RIVER MAIN STEM 239

Columbia River at international boundary 

(International gaging station)

Location.--Lat 49°00'03", Long 117°37'40", in SE^ sec. 4, T. 40 N., R. 41 E., on Left bank 

at International boundary, half a mile downstream from Pend Oreille River.

Drainage area. 59,700 sq mi, approximately.

Records available.--October 1937 to September 1956. 

only, published in WSP

Prior to March 1938 monthly discharge

oniy, puDiisnea in war Lijio.

Gage.--Water-stage recorder. Datum of gage is at mean sea level (Bureau of Reclamation 

T937 datum). Prior to Apr. 27, 1939, staff gage at same site and datum. Since May 31, 

1942, auxiliary water-stage recorder 2.2 miles downstream from base gage. Jan. 1 to 

May 30, 1942, auxiliary staff gage at same site.

Average discharge. 19 years, 97,190 cfs (70,360,000 acre-ft per year).

Extremes.--Maximum discharge during year, 463,900 cfs June 6 (elevation, 1,333.16 ft); 

minimum, 28,000 cfs Feb. 19 (elevation, 1,291.64 ft).

1937-56: Maximum discharge, 550,100 cfs June 12, 1948 (elevation, 1,338.13 ft); 

minimum, 18,000 cfs Feb. 7, 1954 (elevation, 1,289.38 ft).

Flood in June 1894 reached a stage of 1,346 ft, from information by Bureau of Reclamation (discharge, 680,000 cfs).

Flow of about 12,900 cfs occurred Jan. 30 or 31, 1937, based on information from 

other gaging stations (elevation, 1,287.9 ft), from rating curve extended below 

1,291.6 ft; may have been as low sometime in January 1930.

Remarks.--Records excellent. Many diversions above station for irrigation. It was estimated that 346,700 acres were under irrigation in the United States in 1946. Water is 

diverted for the irrigation of an additional 25,000 acres in Canada. The flow is 

affected by internationally controlled storage in Kootenay Lake as well as by natural 

and controlled regulation in other lakes and reservoirs in Kootenay and Pend Oreille 

River basins. Records of chemical analyses and water temperatures for the water year 

1956 are given in WSP 1453.

Cooperation. This station is one of the international gaging stations maintained by the 

United States under agreement with Canada.

Revisions (water years).--WSP 932: 1937(m), 1938(M), 1939(m).

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

Day

1

2

3

4

5

6

7

8

9

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.

59,700

59,600

59,100

58,100

62 , 500

62,000

61,700

62,600

63,400 

69,100

72,000

62,900

58,000

52,400

48,800

49,400

51,100

51,400

53,400

57,100

53 , 500

53,000

50 , 400

48,200

49,000

63,100

78,500

*75,300

71,300

69,400 

64,100

H, 850.1

59,680

-

-

*3,670

Nov.

62,500

57,700

55,700

63 , 900

67 , 500

66,100

67 , 800

67 , 900

63,200 

60,400

65,900

63,000

56,000

53,000

60,000

69,000

75,000

74,000

73,000

65,000

63 , 000

64,000

58,000

55,000

56,000

60,000

57,000

52,000

53,000

55,000

*1,859.6

61,990

-

-

*3,688

Dec.

57,400

57,000

55,400

57,000

53,100

51,000

*49,100

44,100

44,800 

44,800

45,200

43 , 800

49,200

48,400

47,000

47,700

44,500

41,000

41,600

42,900

45,400

53,700

57,700

57,500

57,500

57,800

57,400

62,400

59,500

56,200 

58,600

H.588.7

51,250

-

-

*3,151

Jan.

50,200

48,000

46,700

41,100

45,900

*49,200

57,500

56,200

56,000 

51,300

52,900

*52,700

52,000

45,100

52,300

47 , 600

46,000

44 , 500

46,000

46,400

46,200

48,500

46,400

45,800

46,400

46,300

43 , 800

42,400

39,600

37,600 

56,500

tl,467.1

47,330

-

-

*2,910

Feb.

36,900

39,400

44 , 900

46,200

46,900

47,400

47 , 500

48,900

47 , 500 

45,200

45,800

45,600

47,000

48,400

47,500

42,500

41,900

36,700

29,300

*29,700

39,300

41,600

44 , 900

45 , 200

46,300

41,100

44,000

43,500

43,800

......

*1,252.9

43,200

-

-

*2,485

Mar.

43,800

44,000

43,000

46,100

45 , 200

43 , 600

46,000

41,300

40 , 200 

40,400

38,700

36,300

38,000

39,100

38,800

38,200

38,700

36,200

35,400

40,700

40 , 800

43,200

50,400

55,200

61,600

69,600

77,300

81,000

*83,500

82,000 

84,300

tl.540.6

49,700

-

-

*3,056

Apr.

83,200

80,200

74,800

73,300

73,900

7 1 , 900

68,900

67,000

65,800 

66,300

68,900

71,700

74,300

80,600

82,800

91,400

99,200

114,600

127,000

134,700

137,900

151,900

155,100

160,100

170,500

171,400

*174, 000

176,900

178,700

179,400

43,326.4

110,900

-

-

*6,598

Hay

179,900

179,800

177,100

170,500

165,400

162,600

158,700

161,200

162,000 

*163, 900

168,400

173,800

180,400

183,100

184,000

188,700

197,900

208,200

222,400

239,500

261,000

282,100

302,100

324,200

344,700

358,900

371,900

382,700

392,100

400,300 

408,200

*7, 455 . 7

240,500

-

-

*14,790

June

*419,800

430,400

437,400

447 , 600

457,000

461,000

461,400

456,700

448,300 

440,500

436,200

429,700

424,000

412,300

"395,800

372,500

350,800

342,100

339,400

338,700

333,600

329,000

329,100

334,600

333,300

"320 , 600

304 , 200

288,600

279,000

273^100

*11,426.7

380,900

-

-

*22,660

July

264,600

256,600

250,900

247,000

242,500

235,600

230,400

225,200

222,000 

219,100

«220, 000

221,800

223,700

223,800

220,600

220,600

218,000

215,000

212,400

209,600

210,500

205,700

207,100

207,400

199,300

200,900

195,800

"195,600

190,900

185,000 

175,800

*6,753.4

217,900

-

-

* 13, 400

Aug.

168,800

163,000

155,400

149,100

145,000

141,800

138,300

132,600

123,300 

116,100

110,600

106,500

101,400

101,200

98,700

97 , 800

98,100

98 , 800

97,600

98,400

97,100

97,100

96,900

94,700

96,100

96,200

99,000

98,400

97,500

96,000 

94,500

*3,506

113,100

-

-

*6,954

Calendar year 1955: Max 401,600 Hln 27,700 Mean 103,800 Cfsm - In. - Ac-ft 75

Sept.

85,000

80,700

79,100

74,600

70,700

68,500

*64,700

62,100

59,900 

60,700

62,900

66,100

66,800

60,500

64,600

65,600

67,500

68,800

70,600

74,500

70,800

70,300

68,100

66,600

66,100

65,700

65,600

65,400

63,900

64,000

*2,038.4

67,950

-

-

*4,043

180,000

Water year 1955-56: Max 461,400 Hln 29,300 Mean 120,400 Cfsm 2.02 In. 27.45 Ac-ft 87,400,000

* Discharge measurement made on this day.

* Expressed In thousands.

Mote. No auxiliary gage-height record Nov. 12-30; discharge computed on basis or base gage-height 

record and stage-fall-discharge relation Immediately before and after. No base gage-height record 

Mar. 2, 3; discharge computed on basis of auxiliary gage-height record.
240 KETTLE RIVER BASIN

Kettle River near Ferry, Wash. 

(International gaging station)

Location.--Lat 48°58'40", long 118°46'10", in lot 7, sec. 10, T. 40 N., R. 32 E., on right 

bank li miles south of international boundary and Ferry and 3 miles upstream from 

Toroda Creek.

Drainage area. 2,220 sq mi, approximately. 

Records available.--August 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,836.8 ft above mean sea level, international joint adjustment of 1947. Prior to Nov. 23, 1928, staff gage at present site 

and datum.

Average discharge.--28 years, 1,472 cfs (1,066,000 acre-ft per year).

Extremes.--Maximum discharge during year, 17,100 cfs May 21 (gage height, 19.60 ft); minimum not determined, occurred during period of ice effect.

1928-56: Maximum discharge, 21.200 cfs May 29, 1948 (gage height, 21.15 ft); minimum, 14 cfs (discharge measurement) Jan. 23, 1930, but may have been less- during period 

of ice effect Jan. 18-23, 1930.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are poor. Several small diversions above station for irrigation. No regulation.

Cooperation.--This station is one of the international gaging stations maintained by the 

United States under agreement with Canada.

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. 14 Mar. 15 to Sept. 30

9.6

10.0

10.5

11.0

11.5

149

290

540

860

1,260

9.5

10.0

10.5

11.0

12.0

140

300

540

865

1,740

13.0

15.0

17.0

19.6

2,890

6,140

10,300

17,100

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

Ac-ft

Oct.

326

312

299

*290

304

348

390

376

380

415

452

480

446

415

410

430

480

480

502

540

680

618

570

512

502

564

1,030

867

797

764

71 O

1 ±O

15,697

506

31,130

Nov.

*673

624

576

600

692

738

699

660

648

654

686

390

204

201

194

190

190

200

230

260

300

350

400

450

463

480

529

415

400

395

13,491

450

26,760

Dec.

395

400

405

390

385

380

380

370

 366

366

353

366

371

246

200

200" 190

210

220

230

240

250

250

260

270

270

280

270

260

240

230

9,243

298

18,330

Jan.

240

250

260

260

270

278

290

294

294

286

290

290

294

»282

270

274

270

270

270

266

274

274

270

270

240

190

170

170

170

170

160

7,856

253

15,580

Feb.

160

160

160

160

160

170

170

170

170

170

170

170

180

190

180

180

180

*180

180

180

190

190

190

190

190

200

200

200

200

5,190

179

10,290

Mar.

200

200

200

200

200

190

190

190

156" 180

180

180

190

200

224

240

237

244

244

268

275

278

336

371

432

512

5oT

490

468

468

479

8,747

282

17,350

Apr.

468

m

484

534

600

600

600

600

630

746

925

1,130

1,400

1,870

2,650

3,520

3,880

4,230

4,960

5,840

7,380

9,150

9,830

10,100

9,680

8,980

8,420

7,760

7,080

6,460

120,981

4,033

240,000

May

 5,970

5,600

5,170

4,920

4,870

5,020

5,630

6,620

7,740

8,520

8,860

7,780

6,750

6,180

6,370

7,480

9,500

* 11, 800

 13,800

15,500

16,900

13,506

13,100

12,800

15,000

13,000

12,200

11,200

10,000

9,720

9,610

293,110

9,455

581,400

June

10,200

10,400

8,790

8,620

10,8OO

»9,240

7,200

6,200

5,720

6,060

8,270

7,140

5,780

5,270

5,710

5,840

5,600

4,990

4,730

5,780

5,350

4,650

4,090

3,940

3,260

2,970

2,920

2,790

2,570

Zj390

177,270

5,909

351,600

July

2,240

2,140

2,130

2,240

2,340

2,620

2,536

2,170

1,950

1,780

1,690

1,610

1,470

1,420

1,380

1,400

1,440

1,260

1,130

»1,040

964

895

844

788

725

666

624

576

558

518

*506

43,644

1,408

86,570

Aug.

T63~ 479

453

442

432

413

413

389

362

340

328

316

308

296

289

316

312

312

300

286

271

257

247

240

257

247

244

240

257

261

271

10,021

323

19,880

Sept.

293

278

257

250

244

240

233

*230

224

208

201

192

189

183

180

174

168

168

165

165

168

171

177

195

204

237

282

296

328

31?

6,612

220

13,110

Calendar year 1955: Max 14,200 Mln 177 Mean 1,631 Ac-ft 1,181,000

Water year 1955-56: Max 16,900 Mln 160 Mean 1,945 Ac-ft 1,412,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 16-24, Dec. 7, 8, Dec. 15 to Jan. 4, Jan. 24 

to Mar. 14 (no gage-height record Nov. 16-20, Dec. 16-25, Dec. 30 to Jan. 3, Jan. 27 to Feb. 20j 

discharge estimated on basis of 1 discharge measurement, weather records, and records for Kettle 

River near Laurier).
KETTLE RIVER BASIN 241 

Curlew Lake near Malo, Wash.

Location.--Lat 48°45 I 20", long 118°39'30'' in NE^ sec. 29, T. 38 N., R. 33 E., on east 

shore 1 mile uplake from outlet and 3j miles southeast of Malo.

Drainage area. 65.9 sq mi.

Records available.--July 1953 to September 1956 (fragmentary), discontinued.

Gage.--Staff gage generally read once daily. Datura of gage is S,337.22 ft above mean sea 

level, datum of 1929, supplementary adjustment of 1947.

Extremes. Maximum gage height observed during year, 3.04 ft Apr. 24, 27; minimum observed, 

 0.22 ft Sept. 24.

1953-56: Maximum gage height observed, that of Apr. 24, S7, 1956; minimum observed, 

that of Sept. 24, 1956.

Remarks. No known diversions. Some regulation from small dam at outlet. At times during 

high water and irrigation season, water is diverted from Sanpoil River into this basin. 

At extreme stages there may be some flow into Sanpoil River basin.

Qage 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.

_

-

0.44

-

-

_

-

-

-

.46

_

-

.46

-

-

-

-

.47

-

-

_

-

.48

-

-

.

-

-

52

1

Nov.

0.50

Dec.

0.46

Jan.

_

-

_

-

-

_

-

0.63

-

-

_

-

-

.60

-

_

-

-

-

-

_

_

_

_

-

_

-

-

-

-

Feb.

_

-

_

-

-

0.52

.52

-

-

-

_

.52

-

-

-

_

-

-

.54

-

_

_

_

_

-

.

-

-

-

Mar.

_

-

_

-

0.60

_

_

-

-

.62

.

_

-

_

-

_

.60

.61

_

.64

_

-

.74

-

.80

Apr.

0.82

_

.88

-

_

_

_

1.01

-

_

1..44

1.79

2.02

2.23

_

2.46

2.56

2.66

2.77

2.92

3.04

3.04

3.01

2.98

May

2.88

2.87

_

2.74

-

_

2.55

-

-

-

_

2.46

2.46

_

-

_

2.34

2.28

-

_

_

_

,

-

_

_

2.20

June July

_

-

_

-

-

_

_

_

-

-

_

-

-

.

-

.

_

_

0.88

-

_

,

_

_

-

_

_

-

.58

Aug. Sept.

_

-

_

-

-

.

_

0.28

.28

-

_

.

-

.26

_

.

.24

-

_

_

_

.22

_

_

-
242 KETTLE RIVER BASIN

Kettle River near Laurier, Wash. 

(International gaging station)

Location.--Lat 48°59'10", long 118°13'00", In NWir sec. 11, T. 40 N., R. 36 E., on right 

bank 500 ft downstream from Deep Creek, l| miles southeast of Laurier, and 12 miles 

upstream from Boulder Creek.

Drainage area.--3,800 sq ml, approximately.

Records available.--September 1929 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,425.5 ft above mean sea level, international joint adjustment of 1947. Prior to Jan. 3, 1930, staff gage at same site and 

datum.

Average discharge.--27 years, 2,858 cfs (2,069,000 acre-ft per year).

Extremes. Maximum discharge during year, 31,700 cfs May 22 (gage height, 16.15 ft); minImum, 337 cfs Sept. 21 (gage height, 2.88 ft).

1929-56: Maximum discharge, 35,000 cfs May 29, 1948 (gage height, 17.25 ft); minimum, 88 cfs Dec. 1, 1936 (gage height 2.20 ft), but was probably less during winter of 

1929-30.

Maximum stage known, about 22 ft in May or June 1894, from information by local 

residents.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are poor. North Fork regulated by reservoir at Grand Forks, British 

Columbia. Numerous diversions for irrigation of about 720 acres in the United States 

(for 1946 from Qnited States reports), and 2,090 acres in Canada from the Canada Year 

Book for 1940. Some diversion for domestic use.

Cooperation.--This station is one of the international gaging stations maintained by the 

United States under agreement with Canada.

Revisions (water years).--WSP 737: 1930-31. WSP 862: 1937. WSP 882: 1938.

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

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

2.8 

3.5 

4.0 

5.0 

6.0

305

660

1,010

1,930

3,180

8.0

10.0

13.0

16.0

6,650

11,300

20,200

31,100

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

Ac- ft

Oct.

505 

325

520

510

505

510

552

600

594

624

678

714

734

702

666

654

684

741

762

811

909

1,020

962

909

860

923

1,280

*1,550

1,410

1,350

1,260

25,004

807

49,590

Nov.

1,170 

1,110

1,070

1,020

1,080

1,200

1,220

1,160

1,150

1,140

1.250

1,110

700

500

480

470

ISO

500

600

700

800

850

900

950

970

950

938

867

832

832

26,979

899

53,510

Dec.

818 

757

776

769

741

741

727

*684

660

720

720

660

600

560

520

490

460

450

450

490

610

700

720

730

720

690

700

700

670

650

620

20,343

656

40,350

Jan.

600 

600

600

600

620

640

660

660

670

680

700

690

*680

680

670

670

660

660

650

650

640

600

590

580

560

520

450

440

420

410

400

18,650

602

36,990

Feb.

390 

380

380

380

570

370

580

380

390

400

410

410

400

590

590

390

590

400

*410

420

440

460

480

500

500

500

490

500

510

12,210

421

24,220

Mar.

510 

500

500

520

540

520

500

540

560

550

520

500

520

500

490

500

495

515

515

546

564

600

648

790

874

1,070

1,210

1,170

1,150

1,140

1,150

20,687

667

41,030

Apr.

1,190 

1,200

1,240

1,550

1,510

1,650

1,640

1,660

1,700

1,920

2,500

5,150

5,850

4,870

6,450

8,290

9,350

9,900

11,000

12,400

14,500

17,300

20,400

20,900

19,200

17,600

16,100

15,000

14,000

12,800

254,580

8,486

505,000

May

11,800 

* 11, 200

10,400

9,740

9,420

9,450

10,400

12,500

14,200

15,800

16,800

15,500

12,900

11,800

11,800

15,400

*16,700

*21,000

25,000

28,000

30,500

30,300

25,800

24,000

26,400

26,100

22,800

21,500

19,500

18,400

18,200

550,710

17,760

*1,092

June

19,000 

20,600

18,300

16,400

 19,500

18,400

13 , 900

11,700

10,600

10 , 800

15,60O

15 , 600

10,800

9,640

9,950

11,000

10,600

9,800

9,000

10,500

10,000

9,000

8,000

7,200

6,600

6,200

5,800

5,600

5,400

5,000

536,290

11,210

667,000

July

4,700 

4,500

4,400

4,400

4,600

5,200

5,000

4,700

4,300

5,800

5,500

5,300

5,100

3,000

2,800

2,900

3,100

2,900

2,600

*2,400

2,120

1,960

1,830

1,710

1,610

1,500

1,400

1,300

1,230

1,170

*1,120

92,150

2,973

182,800

Aug.

1,070 l.oio

962

938

923

895

860

832

790

755

720

696

672

648

618

624

642

654

636

606

570

535

515

500

490

490

495

495

495

510

525

21,171

683

41,990

Sept.

550 

550

525

510

490

480

475

*460

445

455

425

410

400

595

586

381

372

354

345

345

341

341

345

354

363

381

405

470

525

546

12,764

425

25,320

Calendar year 1955: Max 23,600 Mln 415 Mean 3,099 Ac-ft 2,243,000

Water year 1955-56: Max 30,300 Mln 341 Mean 3,802 Ac-ft 2,760,000

* Discharge measurement made on this day.

* Expressed In thousands. 

Note. Stage-discharge relation affected by Ice Nov. 13-26, Dec. 13-20, Dec. 28 to Mar. 14 (no 

gage-height record Nov. 15-19, Dec. 13-20, Dec. 28 to Jan. 12, Jan. 29 to Mar. 5j discharge estim a(ted o.n .basis of 1 discharge measurement and weather records). No gage-height record 

Dec. 9-12, 21-27, June 16 to July 20; discharge estimated on basis of weather records, recorded 

range in stage, results of Telemark readings, and records for station near Perry.
COLVILLE RIVER BASIN 

Deer Lake near Loon Lake, Wash.

243

Location. Lat 48°06 I 25", long 117°36'10", on line between sees. 11 and 14, T. 30 N., R. 

41 E., an eighth of a mile upstream from outlet and about 3 miles northeast of town of 

Loon Lake.

Drainage area. 17.8 sq mi.

Records available. November 1952 to September 1956 (fragmentary).

Gage. Staff gage read once daily. Altitude of gage is 2,480 ft (from topographic map). 

Prior to Oct. 1, 1953, staff gage at same site at datum 4.00 ft higher.

Extremes. Maximum gage height observed during year, 9.30 ft Apr. 25, 26; minimum observed, 

 4T32~ft Dec. 17.

1952-56: Maximum gage height observed, that of Apr. 25, 26, 1956; minimum observed, 

3.60 ft Jan 1, 1955.

Remarks.--Intermediate stages of lake controlled for recreational purposes by flashboards. 

No diversion.

Qage height, in feet, 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

Oct.

-

-

-

-

-

-

-

4.43

-

-

4.50

-

-

-

4.38

-

-

-

-

-

.

4.34

-

-

-

-

-

-

4.39

-

Nov.

_

-

-

-

4.38

_

-

-

-

-

.

4.36

-

-

-

.

-

-

4.35

-

.

-

-

-

-

4.34

-

-

-

Dee.

_

-

4.33

-

-

-

-

-

-

4.33

_

-

-

-

4.52

.

4.32

-

-

-

_

-

-

4.40

-

_

4.88

-

-

4.96

Jan.

.

-

-

5.20

-

.

5.26

-

-

-

_

-

5.38

-

-

5.38

-

-

-

-

5.49

-

-

5.64

-

.

-

-

-

5.70

Feb.

.

-

-

5.68

-

_

-

5.72

.

-

.

-

-

5.77

-

_

-

-

-

5.84

_

_

_

.

-

_

_

5.93

-

Mar.

_

.

-

.

-

6.12

-

-

.

6.18

6.20

_

6.13

-

_

.

-

6.24

6.32

6.40

-

_

-

.00

.20

.40

.52 

.62

Apr.

.70

.76

.80

.87

.92

8.00

8.06

8.12

8.18

8.28

8.40

8.50

8.60

8.75

8.84

8.96

9.02

9.04

9.07

9.09

9.13

9.15

9.27

9.30

9.30

9.27

9.22

9.16

9.11

May

9.06

9.00

8.96

8.91

8.86

8.80

8.74

8.69

8.64

8.59

8.53

8.48

8.43

8.37

8.32

8.28

8.24

8.20

8.17

8.14

8.11

8.08

8.04

8.00

7.96

_

7.90

7 88

June

_

7.78

_

-

7.66

-

.

7.58

7.50

_

_

_

7.42

_

_

_

7.38

_

_

7.32

-

7.24

_

7. 16

July

.

.

7.08

_

-

7.00

-

_

-

_

_

_

6.82

_

_

_

_

-

6.64

.

_

-

_

6.43

6.42

Aug.

.

_

_

6.24

_

-

_

_

-

6.04

.

_

_

-

_

_

5.86

-

_

_

_

_

5.70

_

_

.

-

Sept.

5.54

-

-

_

-

5.30

-

_

5.22

_

-

_

_

_

_

-

_

4.94

_

-

_

_

_

4.82
244 COLVILLE RIVER BASIN

Loon Lake near Loon Lake, Wash.

Location. Lat 48°01i45", long 117°36'15", In NW£ sec. 11, T. 29 N., R. 41 E., at south 

end of Loon Lake, 2.7 miles southeast of town of Loon Lake.

Drainage area.--33.4 sq mi.

Records available.--April 1950 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level, unadjusted. Prior to 

Sept. 29, 1951, at site 0.2 mile north at present datum.

Extremes. Maximum elevation during year, 2,381.78 ft Apr. 17; minimum, 2,380.28 ft

i950-56: Maximum elevation, 2,382.71 ft May 3, 1950, but may have been higher sometime in 1951 water- year while water-stage recorder was not operating; minimum recorded, 

2,379.86 ft Dec. 1, 1952.

Remarks.--Elevation controlled by dam at lake outlet. Some small diversions for irrigation of lawns and gardens.

Revisions (water years).--WSP 1216: 1950.

Mean elevation, in feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

80.32

80.32

80.31

80.31

80.32

80.31

80.29

80.30

80.36

80.41

80.40

80.40

80.40

80.39

80.39

80.39

80.38

80.38

80.38

80.38

80.38

80.37

80.37

80.36

80.38

80.39

80.39

80.40

80.42

80.43 eOT

Nov.

80.40

80.41

80.45

80.46

80.45

80.45

80.44

80.44

80.44

80.44

80.44

80.43

80.42

80.42

80.41

80.40

80.38

80.42

80.46

80.45

80.44

80.44

80.46

80.48

80.57

80.58

80.58

80.58

80.58

80.61

Dec.

80.63

80.64

80.64

80.64

80.64

80.66

80.66

80.67

80.70

80.71

80.76

80.79

80.79

80.79

80.80

_

_

-

-

80.96

80.97

81.03

81.05

81.06

81.07

81.14

81.20

81.22

_

_

Jan.

_

_

_

81.43

81.43

81.41

81.37

81.33

81.30

81.25

81.19

81.14

81.12

81.12

81.09

81.09

81.07

81.06

81.04

81.03

81.01

80.99

80.98

80.96

-

_

_

_

_

_

Feb.

_

_

_

_

-

_

_

80.60

.

-

-

-

_

-

_

_

_

_

-

_

-

-

_

-

_

_

_

_

Mar.

_

_

_

_

-

_

_

_

_

_

_

_

_

-

_

_

80.73

80.76

80.73

80.62

80.58

80.59

80.67

80.77

80.89

81.00

81.12

81.22

81.30

81.37

Apr.

81.43

81747

81.53

81.57

81.58

81.60

81.63

81.64

81.67

81.68

81.69

81.70

81.72

81.73

81.75

81.76

81.78

81.77

81.76

81.74

81.72

81.72

81.71

81.72

81.69

81.66

81.64

81.63

81.64

81.65

May

81.65

81.65

81.65

81.64

81.64

81.65

81.64

81.64

81.65

81.68

81.67

81.67

81.66

81.65

81.65

81.64

81.63

81.63

81.62

81.61

81.59

81.58

81.57

81.57

81.56

81.57

81.57

81.56

81.56

81.54

81.52

June

81.51

8l. 49

81.48

81.47

81.46

81.44

81.44

81.43

81.42

81.41

81.40

81.39

81.38

81.39

81.41

81.43

81.43

81.42

81.43

81.44

81.43

81.43

81.42

81.41

81.39

81.38

81.37

81.37

81.36

81.34

 

July

81.33

81.31

81.31

81.30

81.31

81.32

81.32

81.30

81.30

81.29

81.28

81.27

81.26

81.25

81.24

81.23

81.22

81.20

81.19

81.18

81.16

81.15

81.13

81.12

81.10

81.08

81.05

81.02

81.00

80.97

80.95

Aug.

80.92

80.91

80.93

80.94

80.93

80.92

80.91

80.91

80.90

80.89

80.88

80.88

80.87

80.86

80.85

80.82

80.81

80.78

80.76

80.75

80.73

80.71

80.69

80.68

80.67

80.70

80.71

80.70

80.71

80.69

80.68

Sept.

80.67

80.65

80.62

80.60

80.58

80.57

80.56

80.55

80.54

80.53

80.52

80.52

80.50

80.49

80.48

80.46

80.44

80.43

80.43

80.43

80.41

80.39

80.38

80.37

SO. 36

80.36

80.35

80.34

80.34

80.34

Note. Add 2,300 ft to obtain elevation above mean sea level.
COLVILLE RIVER BASIN 

Sheep Creek at Loon Lake, Wash.

245

Location. Lat 48"03'35", long 117°39'10", in NE£ sec. 32, T. 30 N., R. 41 E., on right 

bank 0.7 mile downstream from outlet of Loon Lake and 1 mile west of town of Loon Lake.

Drainage area.--36.2 sq mi.

Records available.--April to September 1950, October 1951 to September 1956.

Gage. Water-stage recorder and wooden control. Altitude of gage is 2,370 ft (from topographic map). April to September 1950 water-stage recorder at site a quarter of a mile 

upstream at different datum.

Average discharge.--5 years, 2.54 cfs (1,840 acre-ft per year).

Extremes.--Maximum discharge during year, 43 cfs Apr. 23 (gage height, 2.84 ft); no flow 

for long periods.

1950, 1951-56: Maximum discharge, that of Apr. 23, 1956; maximum gage height, 

3.43 ft Feb. 4, 1954 (ice jam); no flow at times each year.

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

which are poor. Flow regulated by dam at outlet of Loon Lake. Some small diversions 

for irrigation.

Revisions (water years ). WSP 1396: 1954.

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

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

1.72

1.8

2.0

2.2

.4 

2.4 

8.2

2.4 

2.6 

2.8

17.5

29

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

Ac- ft

Oct.

(*)

0

0

0

Nov.

(*)

0

0

o

Dec.

0

0

0

Jan.

0

0

0

0

o

12

6.0

0

0

0

0

0

*7.0

18

55

35

34

34

33

16

1.0

16

33

32

31

30

28

27 

14

13

5.0

460.0

14.8

912

Feb.

4.0

9.0

18

17

16

8.0

B.O

*16.5

16

15

14.5

14

3*0

9.0

14

13

13

13

5.0

9.0

14.5

16

16

15.5

15

7.2

8.4

16.5

17.5

361.6

12.5

717

Mar.

16.5

16

7.3

11.5

a!9

a!9

a!9

a!9

a!9

a 10

a 10

all

*11.5

8.6

4.7

4.7

2.2

0

0

0

o

0

*.l

.2

.4

.4

9.1 

24

20

21

284.4

9.17

564

Apr.

21

21

22

*26

29

29

30

29

29

28

29

28

28

28

27

27

*29

32

41

*39

22

31

39

40

38

37

12.5

M5.6

807.7

26.9

1,600

May

5.6

*5.6

5.6

5.6

5.6

5.6

5.0

4.7

4.7

5.9

5.6

5.3

4.7

4.4

*5.0

5.3

5.0

4.7

4.4

4.1

3.6

3.2

3.0

3.6

3.4

3.4

3.8

3.2 

3.0

3.0

2.8

138.4

4.46

275

June

2.4

2.0

1.6

1.4

1.2

1.0

.7

.6

.5

.4

.1

00"

0

.2

.5

.4

.2

.5

.6

.5

.4

.2

.1

0

0

0

0 

0

0

15.5

0.52

31

July

(*)

(*)

0

0

0

Aug.

(*)

0

0

0

Sept.

(*)

0

0

0

Calendar year 1955: Max 3.2 Min 0 Mean 0.25 Ao-ft 178

Water year 1955-56: Max 41 Min o Mean 5.65 Ao-ft 4,100

height 

gat

.. 13-20. No gagedischarge measurement,
246 COLVILLE RIVER BASIN

Sheep Creek at Springdale, Wash.

Location.--Lat 48°03'30", long 117°45'00", in SEijNWv sec. 34, T. 30 N., R. 40 E., on right 

bank 15 ft upstream from bridge on State Highway 3, half a mile west of Springdale, and 

4? miles upstream from mouth.

Drainage area. 46.9 sq mi.

Records available.--January 1953 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,980 ft (from topographic map).

Extremes.--Maximum discharge during year, 72 cfs Mar. 30 (gage height, 2.40 ft); maximum 

gage height recorded, 5.22 ft sometime during period Jan. 30 to Feb. 7 (backwater from 

ice); minimum discharge, 3.4 cfs Dec. 5 (gage height, 1.12 ft).

1953-56: Maximum discharge, that of Mar. 30, 1956; maximum gage height recorded, 

that which occurred sometime during period Jan. 30 to Feb. 7, 1956; minimum discharge, 

1.6 cfs Jan. 21, 1955.

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

which are poor. Some small diversions for domestic use. Plow partly regulated by dam 

at outlet of Loon Lake.

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 Mar. 26-28)

1.2

1.3

1.4

5.8

9.6

13.1

1.6 

2.0 

2.4

21

43

72

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

Day

1

2

3

4

5

6

7

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.

6.8

6.5

6.5

6.2

675

6.2

6.2

6.8

8.4

8.8

*7.2

7.2

7.2

7.2

7.2

7.2

7.2

7.2

7.2

7.2

7.2

7.2

7.2

7.2

8.0

7.6

7.2

8.0

8.4

8 .4

7.6

224.9

7.25

0.155

0.18

446

Nov.

7.2

7.2

8.8

8.8

8.0

7.2

7.2

7.2

8.0

7.6

7.2

7.0

6.5

6.0

¥70

6.0

*6.3

7.0

8.0

9.0

8.0

7.0

8.0

10

_13

8.0

6.8

6.8

6.8

6.5

227.1

7.57

0.161

0.18

450

Dec.

6.5

6.5

6.5

6.2

6.0

6.2

6.2

6.5

7.6

5.8

7.2

8.8

8.5

8.0

*7.5

7.0

6.5

6.0

6.0

7.0

9.0

20

25

22

25

30

35

40 3Z

25

22

421.5

13.6

0.290

0.33

836

Jan.

20

20

23

26

30

45

35

30

25

22

20

23

»30

25

45

47

45

44

42

37

15.5

18.5

42

42

40

38

35

30

20

17

15

947.0

30.5

0.650

0.75

1,880

Feb.

13

215

30

38

36

20

20

**30

28

27

25

22

15

23

23

22

21

20

15

20

25

25

25

24

23

17

20

25

27

679

23.4

0.499

0.54

1,350

Mar.

30

33

17

23

30

35

34

33

32

25

22

21

*20

18

15

13

T3

14

15

17

20

23

*27

39

41

45

*41

35

64

66

54

925

29.8

0.635

0.73

1,830

Apr.

59

56

55

*58

62

62

65

S3

62

62

60

59

*58

58

55

53

*52

54

58

*57

49

35

55

61

55

52

41

23

22

2T

1,583

52.8

1.13

1.26

3,140

May

21

25

20

20

20

20

19

19

18.5

20

19.5

19

19

18.5

*17.5

18.5

18.5

17.5

17.5

17.5

16.5

16.5

16.5

17

17

17

18

16.5

16

15

T5.5

562.0

18.1

0.386

0.45

1,110

June

15

15

15

15

15

14

14

14

14

15.5

14

13.5

13.5

14

15

16

14.5

14

15

15

15

15.5

14

14

14

14

14

14

14

14.5

432.0

14.4

0.307

0.34

857

July

14.5

T475

15

15.5

15

*15

15

15

15

15

15

15

15.5

TB~ 16.5

15.5

16

15.5

15.5

15.5

16.5

16

16

16

16.5

16.5

*16.5

16

16.5

16

16 . 5

484.5

15.6

0.333

0.38

961

Aug.

16.5

17

18

17.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16

IS

16.5

16.5

16

16

16

16

16

16

16.5

16.5

17.5

17.5

16.5

17

16 .5

16.5

513.0

16.5

0.352

0.41

1,020

Sept.

16.5

T675

16.5

16.5

16.5

16.5

16'.5

16.5

16.5

16.5

16.5

*16.5

16.5

16.5

16.5

16.5

16

16

16

16

16

16

16

16

16

15.5

1575

15.5

16

15.5

486.0

16.2

0.345

0.39

964

Calendar year 1955: Max 40 Mln 5.5 Mean 8.35 Cfsm 0.178 In. 2.41 Ac-ft 6,040

Water year 1955-56: Max 66 Mln 5.8 Mean 20.5 Cfsm 0.437 In. 5.94 Ac-ft 14,840

* Discharge measurement made on this day.

** Field estimate made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 12-25, Dec. 13-20, Dec. 29 to Jan. 2, Jan. 25 

to Feb. 29. No gage-height record Nov. 12-17, Dec. 15 to Jan. 13, Jan. 29 to Mar. 23; discharge 

estimated on basis of 6 discharge measurements, weather records, and records for stations on nearby 

streams.
COLVILLE RIVER BASIN 247

Mill Creek near Colville, Wash.

Location. Lat 48°34'45", long 117°51'50", in SwiNW? sec. 35, T. 36 N., R. 39 E., on right 

bank 3 miles northeast of Colville and 5 miles downstream from North Fork.

Drainage area. 82 sq mi, approximately.

Records available.--October 1939 to September 1956. Prior to February 1940 monthly discharge only, published in WSP 1316.

Gage. Staff gage and crest-stage indicator; gage read twice daily. Altitude of gage is 

T.950 ft (from topographic map). Prior to Nov. 2, 1952, water-stage recorder (now used 

as supplementary gage) at site half a mile upstream at different datum.

Average discharge.--17 years, 49.3 cfs (35,690 acre-ft per year).

Extremes.--Maximum discharge during year, 609 cfs Apr. 22 (gage height, 7.16 ft); minimum 

observed, 9.6 cfs Sept. 17-19 (gage height, 3.77 ft), but may have been less during 

period of ice effect Nov. 14-17.

1939-56: Maximum discharge, that of Apr. 22, 1956; minimum, 3.6 cfs Aug. 28, 31, 

Sept. 1, 1940, bat may have been less during period of no gage-height record Feb. 1-4, 

1940.

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

for irrigation of about 50 acres above station. No regulation.

Revisions (water years).--WSP 1042: 1940, 1942.

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

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

Diversions

Oct. 1 to Apr. 22 Apr. 23 to Sept. 30

4.0 9.5

4.2 22

4.4 40

4.7 78

5.0 

6.0 

7.1

130

337

592

3.7 7.0

4.0 20

4.3 38

4.6 73

5.0

6.0 

7.1

138

340

592

year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfam

In.

Ac-ft

Oct.

15

14" 14

14

18

16

14

14

24

tt

22

20

18

16.5

15

15

15

14.5

14.5

14.5

14.5

14

14

14

14

15

 15

16.5

18

21 

19.5

505.5

16.3

0.199

0.23

1,000

Nov.

16

16.5

18

18

17

18

18

16.5

17

19.5

16.5

13

11

blO bT5"

blO

blO

10.5

11.5

13

14

13.5

14

15

16

19.5

15

15

14

14

440.0

14.7

0.179

0.20

873

Dec.

15

15

14

14

14

14

13.5

»13.5

13

TS

14.5

18

b!6

b!5

14

13.5

14

b!4

14.5

16

19.5

26

28

28

28

29

40

443"6

34 

b30

631.0

20.4

0.249

0.29

1,250

Jan.

28

26

26

30

3_3

31

31

31

29

26

26

24

26

 25

24

26

24

24

24

23

22

22

25

24

21

b20

20

19

blB

b!7 

b!6

761

24.5

0.299

0.35

1,510

Feb.

b!6

bT6

blB

21

21

26

T9

18

22

22

19.5

19.5

19

blB

b!7

b!6

b!6

b!6

blB

21

 19.5

21

19.5

18

18

16.5

16.5

18

IS

544.0

18.8

0.229

0.25

1,080

Mar.

17

18

21

21

19.5

19.5

17

14.5

14.5

15

14

IT.5

16.5

15

15

15

19.5

22

24

30

31

33

46

50

56

59

61

67

70

*81

106

1,022.5

33.0

0.402

0.46

2,030

Apr.

91

91

92

119

126

120

130

126

140

184

231

257

»289

356

422

»472

500

 462

469

512

552

578

5To

502

421

398

373

356

344

*318

9,601

320

3.90

4.35

19,040

May

296

270

256

252

240

228

226

236

244

236

234

222

204

191

187

187

193

*198

196

185

174

157

146

157

153

138

127

113

108

100 

93

5,947

192

2.34

2.70

11,800

June

87

87

SO

84

81

79

73

70

66

65

64

60

58

58

65

73

66

56

54

55

50

48

46

42

41

40

38

37

35

35

1,793

59.8

0.729

0.81

3,560

July

35

35

*34

37

37

37

36

33

31

30

29

27

26

29

27

25

25

24

23

23

22

22

21

20

19.5

19

18

17

*17.5

17 16 . 5

809.5

26.1

0.318

0.37

1,610

Aug.

16.5

18

18

20

19

18

18

16

15

14.5

14

13.5

13.5

13.5

13.5

13.5

13.5

13.5

13

12.5

12

11.5

TT75

11.5

12.5

13.5

15

13.5

14.5

14

14

450.5

14.5

0.177

0.20

894

Sept.

14

13.5

13.5

13

 13

12.5

11.5

10.5

10.5

10.5

10.5

10

10

10

10

10

9.6

976

10

10

10

10

10

10

10

10

10.5

10.5

11.5

12 5

327.2

10.9

0.133

0.15

649

Calendar year 1955: Max 265 Mln 10 Mean 46.2 Cfam 0.563 In. 7.66 Ac-ft 33,470

Water year 1955-56: Max 578 Mln 9.6 Mean 62.4 Cfam 0.761 In. 10.36 Ac-ft 45,300

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

467Z40 O -58 -17
248 COLVILLE RIVER BASIN

Colville River at Kettle Falls, Wash.

Location.--Lat 48°35i40", long 118°03'30", in sec. 29, T. 36 N., R. 38 E., on right bank 

600 ft dovmstream from Washington Water Power Co.'s plant (revised) at foot of Meyers 

Palls, half a mile south of town of Kettle Falls, and 2 miles upstream from Franklin D. 

Roosevelt Lake.

Drainage area.--1,050 sq mi, approximately.

Records available. October 1922 to September 1956. Published as "at Meyers Falls" 

1922-38.

Gage. Water-stage recorder. Altitude of gage is 1,500 ft (from topographic map). Prior 

Uo Oct. 21, 1932, staff gage at site 500 ft upstream at different datum. Oct. 21, 

1932, to Sept. 19, 1938, staff gages at site 200 ft upstream at different datum. 

Sept. 20, 1938, to Mar. 20, 1949, staff gage at present site and datum.

Average discharge.--34 years, 287 cfs (207,800 acre-ft per year).

Extremes.--Maximum discharge during year, 3,230 cfs Apr. 23 (gage height, 10.17 ft); minimum, 41 cfs Nov. 13 (gage height, 4.51 ft); minimum daily, 81 cfs Nov. 13.

1922-56: Maximum discharge, that of Apr. 23, 1956; minimum observed, 0.5 cfs

Aug. 15, 1930.

Remarks. Records good except those for period of shifting control, which are fair, and 

those for periods of ice effect, which are poor. Several ditches above station divert 

water for irrigation. Slight regulation for power by small reservoir above falls.

Cooperation.--Gage-height record furnished by Washington Water Power Co.

Revisions (water

R

4 

5 

5 

6

years )

atlng tables, 

control (gag

.8 

.0 

.5 

.0

Oct. 1

73 

98 

188 

355

.--WSP 1316

water year 

;e height, In

to Apr. 22

7.0 

8.0 

10.0

: 1938(M) . 1941(M),

1955-56, except period 

feet, and discharge,

800 

1,380 

2,920

5.0 

5.5 

6.0

1948(M)

s of Ice 

In cubic

Apr. 23

104 

219 

440

effect or 

feet per i

to Sept.

7.0 

8.0 

10.0

shifting 

second)

30

1, 

1, 

3,

010 

680 

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.

134

126

124

124

124

132

130

129

134

150

183

171

156

148

139

130

137

129

127

130

134

132

124

127

127

130

*134

137

141

152

158

4,253

137

8,440

Nov.

154

150

139

139

158

158

152

148

142

142

146

139

81

109

97

97

98

100

110

121

130

139

139

141

158

194

208

186

169

164

4,208

140

8,350

Dec.

162

160

164

158

154

152

150

*148

150

154

156

166

154

106

105

104

100 100"

130

171

196

267

351

391

383

351

330

315

310

312

320

6,370

205

12,630

Jan.

325

332

340

379

459

507

533

528

499

441

407

383

371

*367

359

344

340

340

332

328

325

321

321

260

210

2"50 200

200

200

210

220

10,581

341

20,990

Feb.

225

230

230

247

254

261

270

274

274

261

278

281

281

220

200

200

200

205

220

240

*255

270

290

383

587

359

328

313

371

7,807

269

15,480

Mar.

443

447

520

560

546

510

507

427

391

367

340

306

32T

325

325

340

383

427

487

569

636

710

845

1,110

1,320

1,430

1,500

1,530

1,570

*1,620

1,_650

22,466

725

44,560

Apr.

1,610

1,540

1,490

1,480

1,510

1,500

1,460

1,470

1,460

1,490

1,570

1,680

*1,760

1,810

1,900

*2,040

2,330

*2,550

2,590

2,680

2,800

2,910

2,970

2,970

2,910

2,840

2,770

2,700

2,600

*2,440

63,830

2,128

126,600

May

2,240

2,020

1,850

1,690

1,580

1,460

1,380

1,330

1,320

1,320

1,320

1,270

1,200

1,130

1,070

1,020

980

956

*932

926

902

878

830

800

818

776

728

699

655

611

562

35,253

1,137

69,920

June

528

556

496

470

475

470

455

430

410

395

390

370

350

345

360

395

420

400

375

365

370

355

336

313

300

287

279

267

251

2-4.4

11,407

380

22,630

July

241

241

*241

263

275

267

263

248

233

223

210

200

197

213

237

226

197

194

180

178

172

160

160

158

153

147

144

138

140

*140

156

6,175

199

12,250

Aug.

134

142

147

151

160

155

151

149

158

136

134

132

152

125

127

129

127

121

119

118

119

119

119

118

127

134

153

149

149

151

151

4,214

156

8,360

Sept.

147

144

140

138

136

*154

154

134

134

152

129

129

150

129

129

129

127

127

125

125

125

129

129

129

150

154

129

150

150

132

3,947

152

7,850

Calendar year 1955: Max 984 Mln 78 Mean 275 Ao-ft 199,400

Water year 1955-56 : Max 2,970 Mln 81 Mean 493 Ac-ft 358,000

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 15-19, Dec. 15-19, Dec. 27 to Jan. 1, Jan. 24 

to Feb. 5, Feb. 14-25, Mar. 6. Shifting-control method used Apr, 11-27.
SPOKANE RIVER BASIN 249

Coeur d'Alene River above Shoshone Creek, near Prichard, Idaho

Location. Lat 47°42', long 115°59 I , In NE^-SWi sec. 5, T. 50 N., R. 4 E., on left bank at 

Shoshone Creek ranger station, 0.2 mile downstream from Uranus Creek, 0.4 mile upstream 

from Shoshone Creek, and 3§ miles north of Prichard.

Drainage area.--335 sq mi.

Records available.--December 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,485 ft (from river-profile map).

Average discharge.--5 years (1951-56), 790 cfs (571,900 acre-ft per year).

Extremes. Maximum discharge during year, 7,110 cfs Apr. 22 (gage height, 6.52 ft); minimum, 88 cfs Mar. 11 (gage height, 0.92 ft), result of freezeup, but may have been less 

during period of ice effect.

1950-56; Maximum discharge, 9,610 cfs Feb. 11, 1951 (gage height, 7.17 ft), from 

rating curve extended above 5,500 cfs by logarithmic plotting; minimum, 34 cfs Dec. 26, 

1952.

Remarks.--Records excellent except those for periods of ice effect, which are fair. No 

regulation or 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 Apr. 23 to June 1)

0.9 

1.1 

1.3 

1.6 

2.0

76

126

193

331

576

3.0

4.0 

5.0 

6.4

1,400

2,670

4,290

7,040

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

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Cf am

In.

Ac-ft

Oct.

118 

110

104

TI?

218

205

151

142

544

1,180

1,120

754

550

441

370

316

280

252

248

230

214

201

186 

189

243

275

300

*321

381

610

667

11,032

356

1.06

1.22

21,880

Nov.

583 

504

543

1,260

2,640

1,800

1,260

1,000

875

929

1,010

977

883

859

659

617

659

688

799

703

583

523

497 

317

645

977

867

747

667

617

25,888

863

2.58

2.87

51,350

Dec.

»576 

530

485

447

417

420

410

359

376

557

399

5,110

5,540

2,140

1,780

1,520

1,500

1,110

1,050

1,200

2,050

4,540

5.540 

3,530

2,440

2,040

2,120

2,040

1,800

1,590

1,400

50,376

1,625

4.85

5.59

99,920

Jan.

1,500 

1,150

1,020

1,090

1,200

1,070

1,010

955

852

799

747

710

688

*652

645

638

590

550

550

510

497

497

497 

466

405

553

410

420

580

550

270

21,249

685

2.04

2.36

42,150

Feb.

270 

290

510

550

570

570

560

530

310

500

500

520

510

270

260

250

290

520

290

270

270

*270

270 

260

260

250

250

250

250

8,470

292

0.872

0.94

16,800

Mar.

260

270

270

260

250

240

240

240

240

250

180

190

250

220

220

250

240

260

510

410

520

695

1,150 

1,460

1,620

2,550

1,980

1,540

1,550

1,530

1,480

20,445

660

1.97

2.27

40,550

Apr.

1,410 

1,340

1,300

1,330

1,310

1,240

1,290

1,230

*1,150

1,640

2,740

3,340

3,760

4,420

5,250

5,720

4,790

4,650

4,920

5,420

6,220

6,890

6,830 

6,470

*5,960

4,980

4,490

4,190

3,760

3,290

111,550

5,711

11.1

12.36

220,800

May

2,960 

2,720

2,540

2,460

2,450

2,520

3,050

4,150

4,940

4,560

4,650

5,760

2,860

2,480

2,600

3,450

4,420

4,790

4,890

4,790

4,490

3,590

5,110 

 5,050

2,670

2,270

2,210

1,950

1,760

1,660

1,550

99,510

3,204

9.56

11.02

197,000

June

1.450 

1,276

1,100

1,090

1,000

898

829

739

717

695

667

610

569

543

667

688

*652

610

585

563

517

491

460 

447

417

599

576

553

531

33T

20,042

668

1.99

2.22

39,750

July

326

516

559" 370

516

555

511

280

266

262

262

257

245

266

245

226

214

*205

197

195

189

182

171 

168

161

157

154

151

151

148

145

7,242

254

0.699

0.80

14,560

Aug.

148 

154

164

171

161

151

145

158

155

152

129

125

121

118

118

121

118

115

115

115

112

 112

110

m

123

154

161

145

157

189

TZS

4,212

156

0.406

0.47

8,350

Sept.

129 

T2T

118

115

115

112

110

110

107

104

104

102

99

94

94

92

W

92

92

94

107

110

102 

97

97

94

94

99

104

129

3,129

104

0.310

0.35

6,210

Calendar year 1955: Max 5,540 Mln 90 Mean 813 Cfsm 2.43 In. 32.94 Ac-ft 588,700

Water year 1955-56: Max 6,890 Mln 92 Mean 1,046 Cfsm 3.12 In. 42.47 Ac-ft 759,100

Peak discharge (base. 5,600 cfs) . Dee. 12 (10:50 p.m.) 4,540 cfs (5.16 ft); Dee. 23 (2:50 a.m.) 

6,280 cfs (6.03 ft); Apr. 22 (1 p.m.) 7,110 cfs (6.52 ft); May 9 (1 p.m.) 5,120 cfs (5.57 ft); 

May 19 (11 a.m.) 5,040 cfs (5.55 ft).

* Discharge measurement made on this day.

Kote. Stage-discharge relation affected by Ice Dec. 6, 7, 19, 20, Dec. 51 to Jan. 2, Jan. 27 to 

Mar. 21.
250 SPOKANE RIVER BASIN

Coeur d'Alene River at Enaville, Idaho

Location. Lat 47°34', long 116° 15', in NWij sec. 30, T. 49 N., R. 2 E., on right bank 

800 ft upstream from highway bridge, a quarter of a mile northwest of Enaville Post 

Office, 1.1 miles upstream from South Fork, and 3.5 miles downstream from North Fork.

Drainage area.--895 sq mi.

Records available.--March 1911 to April 1913 (fragmentary), October 1939 to September 

1956.Published as North Fork of Coeur d'Alene River at Enaville 1911-13.

Gage.--Water-stage recorder. Datum of gage is 2,100.00 ft above mean sea level, referenced to benchmark near mouth of North Fork, elevation, 2,204.880 ft (Geological Survey 

Bull. 567, p. 82). Mar. 3, 1911, to Apr. 12, 1913, staff gage at site a quarter of a 

mile downstream at different datum. Oct. 18 to Dec. 22, 1939, staff gage at present 

site and datum.

Average discharge.--17 years (1939-56), 1,930 cfs (1,397,000 acre-ft per year).

Extremes. Maximum discharge during year, 19,100 cfs Apr. 22 (gage height, 72.62 ft); minimum, 244 cfs Sept. 20; minimum gage height, 60.97 ft Sept. 19, 20.

1911-13, 1939-56: Maximum discharge, 28,100 cfs Dec. 15, 1946, from rating curve 

extended above 13,000 cfs by logarithmic plotting; maximum gage height, 74.93 ft 

Feb. 11, 1951; minimum discharge, 104 cfs Dec. 26, 1952 (gage height, 60.10 ft).

From local information concerning high-water marks, flood in December 1933 reached 

a stage of 79.47 ft and that in April 1938 a stage of 78.16 ft.

Remarks. Records good except those for periods of backwater from logging operations and 

periods of ice effect, which are fair. No appreciable regulation or diversion above 

station.

Revisions (water years). WSP 1396: 1945.

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

Day

1 

2

3 

4

5

6

7

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.

370 

323

513" 295

550

628

518

510

975

2,590

2,860

1,930

1,440

1,16O

1,OOO

868

785

718

73O

711

659

622

591

572

647

737

812

*875

1,OOO

1,510

'

29,O51

937

1.05

1.21

57,62O

Nov.

1,560 

1,570

1,560 

1,860

5,25O

4,27O

5,O40

2,440

2, ISO

2,540

2,630

2,58O

2,250

2,110

1,740

bl,6OO

bl,7OO

1,820

1,950

1,960

1,770

1,650

1,570

1,570

2,000

3,550

5,360

2,670

2,250

2,O20

68,42O

2,281

2.55

2.84

135,700

Dec.

*1,87O 

1,710

1,570 

1,450

1,380

1,560

1,520

1,220

1,190

1,150

1,240

6,520

8,51O

5,580

5,920

3,420

2,89O

2,400

2,310

2,540

5,870

11,900

15,700

10,2OO

6,790

5,55O

5,170

5.O30

4,500

3 92O 

3)500

129,260

4,17O

4.66

5.37

256,400

Jan.

3,230 

2.92O

2,66O 

2,840

5,55O

5,320

3,1OO

2,9OO

2,6OO

2.58O

2,22O

2,08O

2.O4O

1,950

*1,890

1,89O

1,85O

1,710

1,640

1,580

1,560

1,560

1,6OO

1,560

1,480

1,52O

1,420

1,410

1,310

bl.100

b900

63,55O

2,050

2.29

2.64

126, OOO

Feb.

b900 

b950

bl.OOO 

bl,150

bl,250

bl,250

1,20O

1,120

1,050

1,010

1,000

1,O60

1,03O

9O3

b85O

b85O

1,040

1.O50

987

924

917

*931

91O

882

847

819

812

798

826

28,316

976

1.09

1.18

56,160

Mar.

840 

854

896 

868

826

778

778

771

*791

771

698

672

761

737

718

744

771

847

1,010

1,280

1,490

1,930

5,020

5,900

4,58O

6.660

6,290

4,760

4,100

5,930

4,440

61,514

1,984

2.22

2.56

122.OOO

Apr.

4,37O 

4,010

3,760 

3,720

5,750

5,55O

5,590

5,470

*5,51O

4,140

6,68O

8,340

9,460

11,3OO

13,500

14,9OO

13,200

11,900

12,500

15,800

16,000

18,4OO

18,400

16,5OO

* 14,800

12,400

11 , 2OO

1O.5OO

9,640

8,450

289,540

9,651

1O.8

12. 05

574.5OO

May

7,420 

6,720

6,240 

6,050

6.1OO

6,120

7.O6O

9.5OO

12,OOO

11.6OO

11,7OO

9,880

7,530

6,360

6,24O

7,81O

10,100

11,40O

11.8OO

11,700

11,000

9,OOO

7,850

7,660

* 6.9OO

5.9OO

5,780

5,110

4,7OO

4,46O

4,270

245,960

7,954

8.86

10.22

487,900

June

4,150 

3,690

3,220 

5,050

2.8OO

2,470

2,26O

2,O5O

1,950

1,940

1,92O

1,82O

1,720

1.64O

1.9OO

*2,08O

2,040

1,9OO

1,820

1,79O

1,68O

1,580

1,510

1,45O

1,58O

1,330

1,29O

1,230

1,180

1,150

59,930

1,998

2.25

2.49

118,900

July

1,100 

1,O80

1,250 

1,200

1,O80

1,O60

1,O6O

966

917

889

868

861

819

847

826

757

757

724

*692

672

659

647

634

628

603

591

585

564

548

542 

552

24,958

805

0.899

1.04

49.5OO

Aug.

542 

548

554 

548

530

5O2

480

462

45O

458

426

410

598

383

378

363

354

348

338

338

332

*321

310

3TO

338

410

430

383

452

472

576

12.9O4

416

O.465

O.54

25,590

Sept.

553 

328

314 

310

3O4

296

287

287

287

282

282

278

272

266

260

253

255

250 255"

250

272

282

274

260

255

255

255

272

296

355

8,418

281

O.514

0.55

16,700

Calendar year 1955: Max 15,7OO Min 24O Mean 2,174 Cfsm 2.43 In. 32.98 Ac-ft 1,574,OOO 

Water year 1955-56: Max 18.4OO Min 25O Mean 2,792 Cfsm 5.12 In. 42.47 Ac-ft 2,O27,OOO

Peak discharge (base. 8,OOO cfs). Dec. 12 (12 p.m.) 1O.5OO cfs (68.79 ft): Dec. 25 (8:3O a.m.) 

16,700 cfs (71772 ft); Apr. 22 (9 p.m.) 19.1OO cfs (72.62 ft); May 9 (5 p.m.) 12.5OO cfs (69.72 ft); 

May 19 (l p.m.) 12,OOO cfs (69.48 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Mote. Backwater from logging operations Oct. 1-12, July 1O to Sept. 3O.
SPOKANE RIVER BASIN 251

Coeur d'Alene River near Cataldo, Idaho

Location.--Lat 47°34 I , long 116°18', in sec. 26, T. 49 N., R. IE., on left bank l| miles 

upstream from Cataldo and 3 miles downstream from South Fork.

Drainage area.--1,220 sq mi, approximately.

Records available. April 1911 to December 1912, July 1920 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,100 ft above mean sea level, referenced 

to benchmark "2143 S" (Geological Survey Bull. 567, p. 82). Datum of 1929, supplementary adjustment of 1947, is 2.84 ft higher. Apr. 25, 1911, to Dec. 31, 1912, staff gage 

at site 300 ft downstream at different datum. July 29, 1920, to Oct. 10, 1925, staff 

gage at present site and datum.

Average discharge. 37 years, 2,491 cfs (1,803,000 acre-ft per year).

Extremes.--Maximum discharge during year, 24,200 cfs Dec. 23 (gage height, 49.06 ft); minimum daily, 376 cfs Sept. 18-20; minimum gage height, 38.55 ft Sept. 28.

1911-12, 1920-56: Maximum discharge, 55,300 cfs Dec. 22 or 23, 1933 (gage height, 

56.9 ft, from floodmark), from rating curve extended above 24,000 cfs by logarithmic 

plotting; minimum, 122 cfs Dec. 4, 1929; minimum gage height, 37.03 ft Sept. 6, 1931.

Remarks.--Records good except those for periods of ice effect or backwater from logs, which 

are fair. No appreciable regulation or diversion above station. Records of chemical 

analyses and water temperatures for the water year 1956 are given in WSP 1453.

Cooperation. Water-stage recorder graph furnished by Washington Water Power Co. 

Revisions (water years).--WSP 1396: 1945.

Discharge, In cubic feet per second, water 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

Cfsm

In.

Ac -ft

Oct.

595

506

452 

458

704

732

630

554

1,420

4,040

4,150

2,750

2,050

1,660

1,410

1,210

1,070

949

958

916

820

772

693

679

748

892

1,010

*1,120

1,290

2,020 

2,370

39,628

1,278

1.05

1.21

78,600

Nov.

2,140

1,840

1,830 

2,610

6,110

5,210

4,000

3,280

2,910

3,150

3,530

3,410

b2,950

2,760

b2,100

b2,200

b2,400

b2,600

b2,600

b2,600

2,400

2,190

2,050

2,060

2,780

4,720

4,470

3,580

3,010

*2,690

90,180

3,006

2.46

2.75

178,900

Dec.

2,470

2,270

2,050 

1,860

1,740

1,740

1,690

1,530

1,490

1,590

1,620

8,360

10,300

6,610

5,010

4,350

3,720

3,180

3,090

3,660

5,790

17,300

22.400

13, 800

8,880

7,070

7,130

6,630

5,770

4,980

4,440

172,320

5,559

4.56

5.25

341,800

Jan.

4,110

3,740

3,430 

3,890

4,870

4,410

4,140

3,900

3,500

3,220

2,980

2,820

2,750

2,640

*2,550

2,550

2,450

2,260

2,140

2,080

2,040

2,060

2,140

2,120

1,970

1,730

1,860

1,840

1,680

1,580

bl.200

84,650

2,731

2.24

2.58

167,900

Feb.

bl.100

b 1,200

bl , 300 

bl,500

bl,600

bl,600

bl,500

,370

,260

,210

,230

,320

,270

,130

bl,100

bl,050

bl,300

bl,300

bl,250

bl,200

,170

,230

* ,160

,130

,060

,040

,030

976

1,040"

35,626

1,228

1.01

1.09

70,660

Mar.

1,080

bl.100

bl,150 

bl, 100

bl,050

1,020

1,000

1,000

n.oio

949

868

804

93?

876

860

916

1,050

1,260

1,650

2,150

2,460

3,460

4,850

5,890

6,560

9,220

8,290

6,250

5,410

5,270

5,830

85,315

2,752

2.26

2.60

169,200

Apr.

5,690

5,250

4,980 

5,010

5,050

4,720

4,850

*4,650

4,440

5,530

8,750

11,000

12, 300

14,300

17 , 300

19,200

17,000

15,300

16,000

17 , 800

20,400

25,000

23,000

21,100

*18,900

16,000

14,400

15,700

12,500

10,900

575,020

12,450

10.2

11.37

739,900

May

9,630

8,780

8,170 

7,860

7,810

7,770

8,850

11,900

15,200

14, 800

14,700

12,600

9,660

8,170

8,150

10,100

13,100

15,000

15,700

15,800

15, 100

12,600

11,000

10,800

*9,760

8,460

8,290

7,330

6,980

6,650

6,560

327,260

10,560

8.66

9.98

649,100

June

6.410

5,790

5,080 

4,810

4,580

5,880

3,530

3,210

3,090

3,180

3,140

2,910

2,650

2,510

2,870

3,010

*2,870

2,670

2,570

2,530

2,400

2,290

2,180

2,100

2,020

1,960

1,850

1,790

1,690

1,660

91,030

3,034

2.49

2.77

180,600

July

,610

,550

.850 

,790

,610

,590

,520

,400

,500

,270

,270

,250

, 160

,120

, 100

1,020

958

*949

908

892

952

884

844

836

836

796

772

756

740

708

700

54,921

1,126

0.925

1.06

69,260

Aug.

700

732

764 756"

724

672

658

637

623

609

595

581

574

554

548

548

530

512

500

506

506

500

*482

556

530

693

708

630

616

658

630

18,782

606

0.497

0.57

57,250

Sept.

542

5750"

482 

470

464

452

440

440

435

430

430

420

415

410

400

390

381

376

576

576

410

430

415

400

390

400

400

420

452

512

12,858

429

0.352

0.39

25,500

Calendar year 1955 : Max 22,400 Mln 395 Mean 2,852 Cfsm 2.34 In. 31.74 Ac-ft 2,065,000

Water year 1955-56 : Max 23,000 Min 376 Mean 3,731 Cfsm 3.06 In. 41.62 Ac-ft 2,709,000

Peak discharge (base. 11,100 cfs). Dec. 12 (11 p.m.) 12,100 cfs (45.54 ft): Dec. 23 (2:30 a.m.) 

24,200 ofs (49706 ft); Apr. 22 (12 p.m.) 23,900 cfs (48.96 ft); May 9 (5 p.m.) 15,900 cfs (46.77 ft); 

May 20 (11:30 a.m.) 16,000 cfs (46.80 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note.--Backwater from logs Oct. 1-12, June 26 to July 4, Aug. 7 to Sept. 30.
252 SPOKANE RIVER BASIN

St. Joe River at Calder, Idaho

Location. Lat 47°16', long 116°11', In sec. 3, T. 45 N., R. 2 E., on right bank 150 ft 

southwest of Chicago, Milwaukee, St. Paul & Pacific Railway station at Calder.

Drainage area. 1.030 sq mi, approximately.

Records available.--April 1911 to September 1912 (published as "near Calder"}, July 1920 

to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,096.76 ft above mean sea level, datum 

of 1929, supplementary adjustment of 1947, or 2,100 ft above mean sea level, datum of 

Geological Survey as given in Bulletin 567. Apr. 14, 1911, to Sept. 30, 1912, staff 

gage at site 2| miles downstream at different datum. July 13 to Dec. 21, 1920, staff 

gage at present site and datum.

Average discharge. 37 years (1911-12, 1920-56), 2,319 cfs (1,679,000 acre-ft per year).

Extremes.--Maximum discharge during year, 20,600 cfs May 21 (gage height, 88.66 ft); 

minimum daily, 398 cfs Sept. 26; minimum gage height, 79.53 ft Sept. 18.

1911-12, 1920-56: Maximum discharge, 53,000 cfs Dec. 23, 1933, computed on basis 

of slope between gages downstream; maximum gage height, 93.1 ft Apr. 18, 1938, from 

floodmark; minimum discharge, 91 cfs Nov. 27, 1952; minimum gage height, 78.43 ft 

Dec. 5, 1928.

Remarks Records good except those for periods of ice effect and those for Oct. 1 to 

Nov. 2, July 17 to Sept. 30, which are fair. No diversion above gage.

Cooperation.--Water-stage-recorder graph furnished by Washington Water Power Co.

Revisions.-- WSP 1182: 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 Oct. 1, 8, 9, Oct. 19 to Nov. 2,

Mar. 21 to Apr. 9, May 22-24, July 17 to Sept. 30)

79.6

80.0

80.5

81.0

82.0

380

575

925

1,380

2,580

83.0

85.0

86.0

87.0

4,070

7,730

10,200

13,200

20,900

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

Cf sm

In.

Ac -ft

Oct.

531

505

505

520

893

770

587

553

1,570

2.510

1,990

1,320

1,140

1,030

934

853

800

756

742

707

642

635

635

605

605

668

*755

845

1,060

1,460 

1,380

28,486

919

0.892

1.03

56,500

Nov.

1,130

976

942

1,380

3,180

2,350

1,860

1,620

1,600

5.890

3,750

2,860

2,050

1,850

1,400

1,200

1,300

1,500

1,600

2,000

1,930

1,730

1,580

1,570

1,740

2,470

2,310

1,920

1,730

*1,600

57,018

1,901

1.85

2.06

113,100

Dec.

1,530

1,440

1,360

1,270

1,170

1,210

1,200

1,080

1,100

1.050

1,250

3,990

3,440

2,580

2,200

2,000

1,900

1,750

1,850

2,440

4,150

15.100

15,100

8,360

5,900

5,080

5,140

4,570

4,050

3,500 

3,150

109,910

3,545

3.44

3.97

218,000

Jan.

3. OOP

2,850

2,710

2,920

2,820

?,520

2,470

2,400

2,180

2,090

2,030

1,910

*1,940

1,860

1,870

1,940

1,870

1,730

1,690

1,630

1,600

1,610

1,640

1,580

1,460

1,260

1,200

1,350

1,380

1 '925 150 

59,485

1,919

1.86

2.15

118,000

Feb.

800

152

1,000

1,200

1.500

1,300

1,250

1,200

1,100

1,050

1,050

1,200

1,100

1,050

950

800

850

900

900

900

900

1,000

1,050

1,000

950

950

900

900

900

29,180

1,006

0.977

1.05

57,880

Mar.

950

1,100

1,200

1,100

1,000

950

900

950

900

*810

800

800

820

820

180

780

850

1,000

1,200

1,450

1,650

2,360

5,260

5,560

5,890

4.870

5,930

3,120

*2,870

2, 960

3,220

54,830

1,769

1.72

1.98

108,800

Apr.

3,020

2,860

2.850

2,970

3,080

5,000

3,480

5,120

5,080

4,390

7,070

8,360

9,440

11,100

12,900

13,500

11,300

11,300

12,400

14,500

16,200

17 700

17^400

*16,700

14,200

12,700

12,400

11,900

10,500

9,160

282,580

9,415

9.14

10.20

560,100

May

8,340

7,950

7,750

7,770

7.470

7,750

9,290

15,900

16 , 500

15,900

14,800

12,100

9,990

9,020

9,600

12,000

15,200

17,700

19,000

20.000

19,800

18,300

*17,300

17,700

15,700

14,300

15,900

12,500

12,400

12,100 

12,400

408,210

13,170

12.8

14.74

809,700

June

15-100

Hleoo

10,200

9,340

8,340

7,050

6,160

5,710

5,850

6,230

6,140

5,420

4,940

4,720

5,130

5,180

4,700

*4,360

4,210

4,210

5,950

3,630

3,460

3,270

3,090

2,930

2,800

2,750

2,690

2.570

'165,710

5,457

5.50

5.91

524,700

July

2,440

2,320

2.800

2,520

2,210

2,080

1,980

1,870

1,810

1,780

2,010

1,790

1,640

1,580

1,440

1,380

*1 , 540

1,230

1,210

1,160

1,150

1,110

1,060

1,030

984

959

942

925

909

893 

87J.

47,429

1,530

1.49

1.71

94,070

Aug.

877

877

869

885

822

785

756

728

728

707

700

680

648

648

648

611

605

587

581

570

*548

564

564

570

599

845

1.060

861

721

850 

648

22,122

714

0.695

0.80

45,880

Sept.

605

575

558

555

542

575

480

470

448

445

458

461

456

445

454

454

450

425

425

407

448

485

443

416

407

598

402

505

556

770

14,412

480

0.466

0.52

28,590

Calendar year 1955: Max 17,500 Min 390 Mean 2,597 Cfsm 2.52 In. 34.24 Ac-ft 1,880,000

Water year 1955-56: Max 20,000 Min 398 Mean 3,490 Cfsm 3.39 In. 46.12 Ac-ft 2,533,000

Peak discharge (base, 8,500 cfs) . Dec. 22 (10 p.m.) 19,900 cfs (88.60 ft); Apr. 22 (5 to 7 a.m.) 

18,100 cfs (88721 ft); May 9 (5:30 to 8:30 a.m.) 17,000 cfs (87.91 ft); May 21 (6 a.m.) 20,600 cfs 

(88.66 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 13-20, Dec. 15-19, Dec. 30 to Jan. 2, Jan. 27, 

28, Feb. 1 to Mar. 20.
SPOKANE RIVER BASIN 253

St. Maries River at Lotus, Idaho

Location. Lat 47°14'40", long 116°37'30", in sec. 17, T. 45 N., R. 2 W., on left bank 

lilTe northwest of Lotus, 1 mile downstream from Carlton Creek, and 5i miles southwest 

of St. Maries.

Drainage area. 437 sq mi.

Records available. July 1911 to October 1912, July 1920 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 2,140.19 ft above mean sea level, referenced to benchmark "U.S.G.S. 2155 1911 35" (Geological Survey Bull. 567, p. 45). 

Datum of 1929, supplementary adjustment of 1947, is 3.17 ft higher. Prior1 to Oct. 1, 

1945, staff gages at sites 0.8 to 1.3 miles upstream at different datums. Oct. 1, 

1945, to Feb. 21, 1949, staff gage at present site and datum.

Average discharge. 36 years (1920-56), 513 cfs (371,400 acre-ft per year).

Extremes. Maximum discharge during year, 8,500 cfs Dec. 22, computed on basis of unit 

runoff from nearby streams; maximum gage height, 9.8 ft about Nov. 16 (ice Jam); 

minimum discharge, 64 cfs Sept. 18 (gage height, 1.20 ft).

1911-12, 1920-56: Maximum discharge observed, 23,800 cfs Dec. 22, 23, 1933, from 

rating curve extended above 4,000 cfs by logarithmic plotting; maximum gage height, 

13.4 ft probably Feb. 9, 1951, from floodmark (ice Jam); minimum discharge, 11 cfs 

Nov. 23, 1952 (gage height, 0.98 ft).

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

which are poor. No regulation or diversion above station.

Cooperation. Water-stage-recorder graph and one discharge measurement furnished by 

Washington Water Power Co.

Revisions (water years).--WSP 1062: Drainage area. WSP 1346: 1912.

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

1.2 

1.4 

1.7 

2.0 

2.5

107

205

350

655

3.0 1,060

4.0 2,240

4.5 2,930

5.3 4,280

1.2

1.4 

1.7 

2.0 

2.5

112

222

380

710

22 to Sept. 30

3.0 

4.0 

5.0

6.0

1,070

2,060

3,340

5,110

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

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

80

80

12

74

110

154

100

87

323

880

755

340

241

182

151

135

124

115

118

118

115

110

104

100

100

110

*148

164

232

465 

400

6,287

203

0.465

0.54

12,470

Nov.

275

214

MI

325

762

441

383

330

315

592

603

440

260

240

220

200

250

380

500

600

550

500

420

360

700

1.600

1,300

898

*697

577

15,129

504

1.15

1.29

30,010

Dec.

551

513

441

383

300

375

340

240.

280

260

479

3,460

2,000

1,000

800

600

500

450

600

1,500

4,000

7 . OOP

5,000

3,000

2,000

*1,490

2,040

1,400

1,000

650 

750

43,402

1,400

3.20

3.69

86,090

Jan.

800

650

550

900

*1.210

950

878

892

766

703

*63!

598

605

591

598

899

1,190

988

857

780

724

745

892

857

752

544

668

550

560

500 

450

23,280

751

1.72

1.98

46,180

Feb.

350

300

380

550

520

480

440

400

390

390

410

450

480

430

350

300

320

340

400

420

420

480

480

470

450

440

430

420

420

------

12,110

418

0.957

1.03

24,020

Mar.

500

600

800

700

550

500

500

500

450

430

400

400

400

400

400

430

550

650

750

950

1,200

1,500

1,800

2,000

2,300

2.500

2,300

1,800

*1,900

2,180 

2,430

32,770

1,057

2.42

2.79

65,000

Apr.

2,080

1,830

1.720

1,870

2,000

1,730

1,860

1,920

1,870

2,500

3,580

4,090

4,120

4,430

4,840

5.070

4,420

3,580

3,440

3,780

4,270

4,600

4,430

*3,700

3,030

2,600

2,430

2,280

2,OOO

1,760

91,830

3,061

7.00

7.82

182,100

May

1,540

1,400

1,330

1,410

1,790

1,630

1,660

3,560

4.450

3,300

3,100

2,480

2,020

1,640

1,470

1,440

1,530

1,610

1,630

1,610

1,480

1,320

1,200

1,420

1,210

1,170

1,420

1,120

980

871

794

53,565

1,728

3.95

4.56

106,200

June

745

710

640

710

689

605

564

492

446

410

380

369

340

323

453

80S

*717

538

472

512

446

392

357

334

312

286

275

251

236

227

14,039

468

1.07

1.19

27,850

July

222

214

265

286

232

218

205

188

184

176

180

201

173

165

162

154

*143

137

131

128

128

124

118

112

112

107

104

102

102

99

99

4,971

160

0.366

0.42

9,860

Aug.

96

99

102

104

99

94

89

89

86

84

82

79

79

77

75

77

77

75

73

11

*71

71

71

71

75

121

180

162

118

124

112

2,883

93.0

0.213

0.25

5,720

Sept.

91

86

82

79

77

77

75

75

75

75

73

71

71

71

68

66

66

64

66

66

68

75

73

71

68

66

68

79

86

104

2,232

74.4

0.170

0.19

4,430

Calendar year 1955: Max 7,000 Mln 61 Mean 563 Cfsm 1.29 In. 17.49 Ac-ft 407,600

Water year 1955-56: Max 7,000 Win 64 Mean 826 Cfsm 1.89 In. 25.75 Ac-ft 599,900
254 SPOKANE RIVER BASIN

Coeur d'Alene Lake at Coeur d'Alene, Idaho

Location. Lat 47°40', long 116 0 46', in sec. 24, T. 50 N., R. 4 W., 500 ft southwest of 

south end of Eleventh Street, Coeur d'Alene.

Drainage area. 3,700 sq mi, approximately. 

Records available.--April 1903 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2 100.00 ft above mean sea level, referred 

to originally accepted elevation (2,157.40 ft) of Geological Survey benchmark in southeast corner of Merriam Building (see WSP 882). Gage heights reduced to elevations above 

mean sea level. Datum of 1929, supplementary adjustment of 1947, is 3.00 ft higher. 

Apr. 26, 1903, to Feb. 14, 1905, staff gage at mouth of St. Joe River at datum about 

18.7 ft higher. Feb. 15, 1905, to Mar. 23, 1921, staff gage and Mar. 24, 1921, to 

Dec. 22, 1930, water-stage recorder, at Johnson Wharf 800 ft southeast of railroad station and 1 mile northwest of present site at datum 19.75 ft higher. Dec. 23, 1930, to 

Feb. 9, 1931, staff gage at present site and datum.

Extremes. Maximum contents during year, 636,900 acre-ft Apr. 26 (elevation, 2,135.50 ft); 

minimum, 85,800 acre-ft Mar. 18 (elevation, 2,123.19 ft).

1903-56: Maximum contents, 834,900 acre-ft Dec. 25, 1933 (elevation, 2,139.05 ft); 

minimum, 2,700 acre-ft below zero of contents table Oct. 10-12, 1904, Sept. 24, 25, 

1905, Oct. 14 to Nov. 3, 1906 (elevation, 2,119.9 ft).

Maximum contents known prior to 1903, 753,300 acre-ft May 31, 1894 (elevation, 

2,137.6 ft, from high-water marks).

Remarks. The Washington Water Power Co. stores water in Coeur d'Alene Lake by regulation 

at Post Falls Dam for power generation at Post Falls and other plants on Spokane River. 

Storage is within natural range of lake stage. Contents given herein are those above 

elevation 2,120.0 ft. Capacity of lake between elevations 2,120 and 2,140 ft, 889,000 

acre-ft.

Cooperation.--Water-stage-recorder graph furnished by Washington Water Power Co. 

Revisions. WSP 1182: Drainage area.

Capacity table, water year 1955-56 (elevation, in feet, and 

contents, in acre-feet)

2,123.0

2,125.0

2,127.0

2,129.0

80,700

135,200

195,300

288,100

2,131.0

2,133.0

2,135.0

2,137.0

392,500

500,000

609,300

719,800

Elevation, in feet, at 12 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

27.48

27.44

27.40

27.36

27.31

27.27

27.23

27.22

27.41

27.69

27.80

27.83

27.85

27.84

27.82

27.78

27.71 

27.67

27.61

27.52

27.43

27.34

27.26

27.19

27.11

27.02

26.97

26.90

26.90

26.91

26.92

192,300

-23,100

Nov.

26.97

26.99

26.94

26.93

27.18

27.38

27.50

27.58

27.63

27.80

27.90

28.02

28.01

27.94

27.86

27.73

27.62 

27.64

27.61

27.63

27.61

27.55

27.53

27.52

27.66

27.81

27.82

27.78

27.77

27.85

231,400

+39,100

Dec.

27.85

27.83

27.78

27.73

27.67

27.62

27.52

27.45

27.33

27.24

27.48

28.01

28.19

28.11

27.91

27.82

27.84 

27.83

27.90

27.84

28.02

29.04

30.53

31.54

31.81

31.80

31.64

31.43

31.11

30.72

30.32

356,500

+125,100

Jan.

29.91

29.51

29.17

28.95

28.73

28.50

28.28

28.09

27.87

27.70

27.49

27.32

27.30

27.22

27.19

27.26

27.30 

27.31

27.29

27.27

27.31

27.38

27.48

37.51

27.42

27.32

27.29

27.24

27.20

27.12

26.99

194,900

-161,600

Feb.

26.84

26.71

26.58

26.50

26.42

26.35

26.26

26.13

26.03

25.96

25.89

25.82

25.77

25.69

25.58

25.43

25.32 

25.22

25.11

25.08

25.02

24.92

24.87

24.80

24.69

24.60

24.52

24.44

24.38

118,300

-76,600

Mar.

24.28

24.27

24.26

24.24

24.20

24.12

24.07

23.97

23.89

23.80

23.70

23.59

23.52

23.42

23.32

23.24

23.20 

23.21

23.33

23.55

23.91

24.48

25.18

25.81

26.50

27.29

27.80

28.01

28.13

28.26

28.37

256,400

+136,100

Apr.

28.41

28.41

28.34

28.29

28.23

28.15

28.15

28.10

28.02

28.03

28.36

28.86

29.39

30.00

30.68

31.50

32.18 

32.58

32.89

33.23

33.71

34.31

34.91

35.29

35.46

35.48

35.33

35.16

34.90

34.57

585,600

+329, 200

May

34.14

 3.72

33.30

32.95

32.60

32.30

32.07

32.07

32.39

32.85

33.19

33.38

33.32

33.09

32.79

32.59

32.59 

32.78

33.13

33.53

33.90

34.14

34.24

34.20

34.13

33.98

33.77

33.49

33.20

32.88

32.61

478,900

-106,700

June

32.38

32.13

31.89

31.61

31.24

30.88

30.48

30.08

29.68

29.36

29.08

28.79

28.47

28.18

28.04

27.89

27.71 

27.50

27.30

27.11

26.90

26.68

26.47

26.50

26.56

26.67

26.77

26.93

27.07

27.22

203,700

-275,200

July

27.37

27.49

27.61

27.74

27.80

27.81

27.82

27.90

27.91

27.93

27.94

27.94

27.92

27.99

28.02

27.98

27.98 

27.97

27.98

28.00

28.00

27.97

27.97

27.98

27.97

27.94

27.94

27.98

28.01

28.00

27.99

238,000

+34,300

Aug.

27.96

27.95

27.96

27.96

27.98

27.99

27.99

27.99

27.99

27.98

27.97

27.98

27.98

27.97

27.95

27.94

27.92 

27.91

27.93

27.93

27.92

27.91

27.92

27.91

27.93

27.97

27.90

27.91

27.94

27. 93

27^91

234,200

-3,800

Sept.

27.90

27.90

27.89

27.90

27.90

27.90

27.93

27.98

27.97

27.93

27.91

27.89

27.85

27.81

27.76

27.71

27.67 

27.64

27.62

27.60

27.55

27.50

27.46

27.43

27.39

27.34

27.33

27.30

27.30

27.28

206,100

-28,100

Calendar year 1955.................... t +296,300

Water year 1955-56.................... t -9,300

t Contents, in acre-feet, at end of month.

t Change in contents in acre-feet.

Note. Add 2,100 ft to obtain elevation above mean sea level.
SPOKANE RIVER BASIN 255

Hayden Lake at Hayden Lake, Idaho

Location. Lat 47°46', long 116°45', In sec. 18, T. 51 N., R. 3 W., at Avondale and Hayden 

Lake pumping plants, a quarter of a mile north of Bozanta Tavern at Hayden Lake.

Records available. May 1920 to September 1956.

Gage. Staff gage read once dally. Datum of gage Is 2,200.21 ft above mean sea level, 

datum of 1929. Prior to Oct. 1, 1925, at datum 30.35 ft higher. Oct. 1, 1925, to 

Mar. 26, 1931, at datum 21.60 ft higher.

Extremes.--Maximum gage height observed during year, 42.46 ft Apr. 22; minimum observed, 

34.39 ft Sept. 29.

1920-56: Maximum gage height observed, that of Apr. 22, 1956; minimum observed, 

19.38 ft Dec. 16, 1931.

Remarks. Water is pumped from lake for Irrigation and domestic supply. Lake has no natural surface outlet, but, due to the permeability of the lakebed, a considerable part of 

the total Inflow leaves the lake by infiltration to the ground water of Rothdrum Prairie. 

A dike at southwest corner of the lake failed Apr. 22 and flow through the breach, which 

seeped rapidly into the ground, was measured to be 105 cfs June 16 and was estimated at 

about 100 cfs on May 8, 19, and 27. Breach in the dike was closed June 28.

Revisions (water years). WSP 962: 1921(M). WSP 1216: 1950.

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.

35.52

35.50

35.48

35.46

35.48

35.48

35.46

35.46

35.56

55.66

35.66

35.64

35.62

35.62

35.62

35.60

35.58

35.56

35.56

35.54

35.52

35.50

35.48

35.48

35.48

35.48

35.50

35. 5O

35.52

35.52

35.50

Nov.

35.50

35.50

35.52

35.54

35.54

35.54

35.54

35.54

35.54

35.54

35.56

35.56

35.56

35.54

35.52

35.52

35.54

35.58

35.62

35.62

35.64

35.64

35.64

35.66

35.70

35.80

35.82

35.84

35.86

35.88

Dec.

35.93

35.93

35.94

35.94

35.94

35.94

35.95

35.95

35.98

35.98

36.02

36.10

36.36

36.42

36.48

36.52

36.56

36.56

36.60

36.70

36.74

36.94

37.24

37.38

37.55

37.66

37.82

37.95

38.04

38.12

38.18

Jan.

38.22

38.37

38.30

38.42

38.46

38.48

38.56

38.62

38.66

38.70

38.74

38.77

38.82

38.85

38.89

38.94

39.02

39.04

39.08

39.10

39.12

39.16

39.20

39.23

39.24

39.26

39.30

39. 52

39.33

39.34

39.35

Feb.

39.35

39.35

39.35

39.34

39.37

39.37

39.37

39.36

39.36

39.35

39.36

39.37

39.34

39.33

39.34

39.30

39.31

39.30

39.28

39.28

39.30

39.28

39.28

39.28

39.28

39.26

39.29

39.29

39.32

_^z_:---

Mar.

39.30

39.30

39.33

39.30

39.29

39.30

39.28

39.29

39.27

39.27

39.25

39.24

39.24

39.23

39.22

39.20

39.19

39.18

39.18

39.20

39.25

39.32

39.45

39.60

39.76

40.00

40.20

40.30

40.36

40.40

40.48

Apr.

40.54

40.56

40.60

40.64

40.64

40.66

40.66

40.72

40.72

40.74

40.76

40.88

41.00

41.16

41.38

41.60

41.78

41.90

42 .00

42.10

42.26

42.44

42 .32

42.23

42.13

41.98

41.84

41.70

41.58

41.46

Hay

41.30

41.16

41.04

40.92

40.82

40.70

40.60

40.50

40.44

40.40

40.34

40.26

40.22

40.14

30.06

39.97

39.90

39.82

39.75

39.70

39.62

39.56

39.48

39.46

39.38

39.30

39.26

39.20

39.14

39.06

38.98

June

38.90

38.84

48.76

38.72

38.66

38.58

38.50

38.44

38.38

38.30

38.24

38.16

38.10

38.02

38.02

38.04

37.98

37.93

37.88

37.84

37.80

37.72

37.66

37.60

37.52

37.46

37.44

37.38

37.34

37.30

July

37.28

37.26

37.26

37.62

37.24

37.23

37.20

37.17

37.15

37.12

37.08

37.06

37.02

37.00

36.98

36.92

36.88

36.85

36.82

36.77

36.74

36.70

36.66

36.62

36.58

36.52

36.48

36.44

36.38

36.36

36.32

Aug.

36.28

36.22

36.18

36.14

36.12

36.10

36.04

36.02

36.00

35.96

35.92

35.88

35.84

35.80

35.78

35.72

35.68

35.64

35.60

35.56

35.52

35.48

35.46

35.42

35.39

35.58

35.42

35.38

35.37

35.36

35.33

Sept.

35.30

35.27

35.23

35.19

35.16

35.12

35.08

35.05

35.02

34.98

34.95

34.92

34.88

34.84

34.80

34.75

34.72

34.70

34.66

34.63

34.60

34.57

34.55

34.52

34.50

34.47

34.44

34.41

34.39

34.40
256 SPOKANE RIVER BASIN

Rathdrum Prairie Canal at Huetter, Idaho

Location.--Lat 47°43 I , long 116°52', in see. 6, T. 50 N., R. 4 W., on left bank 450 ft 

downstream from outlet of discharge pipe, five-eighths of a mile north of pumping 

plant, and three-quarters of a mile northwest of Huetter.

Records available. April 1946 to September 1956. 

Gage. Water-stage recorder.

Extremes.--1946-56: Maximum daily discharge, 66 cfs June 29 to July 2, 1947; no flow for 

long periods each year.

Remarks.--Records good. Canal carries water which is pumped from Spokane River in sec. 7, 

T. 50 N., R. 4 W., for irrigation of first unit of Rathdrum Prairie 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

Nov.

0

0

o

Dec.

(*)

0

0

0

Jan.

0

0

0

Feb.

------

O

o

0

Mar.

O

0

0

Apr.

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

o

o

0

0

o

0

0

o

0

0

ail

0

0

11

0.37

22

May

0

0

a!4

0

O

0

a28

*24

27

30

30

30

29

28

28

27

26

39

*46

47

49

50

55

53

50

50

*0

28

46

49

49

932

30.1

1,850

June

50

52

51

29

0

0

o

19

40

46

47

47

48

34

0

*0

0

0

.9

0

0

0

0

0

32

50

52

53

55

55

760.9

25.4

1,510

July

55

54

55

55

55

55

55

55

55

57

57

57

44

44

58

58

5S

58

58

*57

57

57

56

56

56

56

56

56

56

56

56

1,718

55.4

3,410

Aug.

56

56

50

57

*_58

56

58

58

58

58

57

56

56

56

56

56

56

57

57

57

53

57

*41

a43

*.2

23

0

.6

8.1

0

37

1,391.9

44.9

2,760

Sept.

47

47

51

53

53

52

54

53

52

52

52

52

52

52

49

48

48

48

47

47

39

12

0

0

0

0

0

0

0

0

1,060

35.3

2,100

Calendar year 1955: Max 58 Mln 0 Mean 15. 0 Ac-ft 10,860

Water year 1955-56: Max 58 Mln O Mean 16.0 Ac-ft 11,650

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of records of pump operation and records for 

adjacent periods.
SPOKANE RIVER BASIN 257

Spokane Valley Farms Co.'s canal at Post Falls, Idaho

Location. Lat 47°43', long 116°57', in sec. 3, T. SO N., R. 5 W., on left bank 300 ft 

downstream from headgate and half a mile northwest of Post Falls.

Records available. May 1911 to September 1917, September 1919 to September 1956.

Gage. Water-stage recorder. Prior to Apr. 22, 1938, staff gages at several sites within 

1,000 ft of present site at various datums.

Extremes. 1911-17. 1919-56: Maximum daily discharge, 312 cfs May 22-24, 26, 28, 1956; no 

flow or small amount of leakage during non-irrigation seasons.

Remarks. Records good except those below 5 cfs, which ape poor. Canal diverts water for 

irrigation from Spokane River in SE^- sec. 3, T. 50 N., R. 5 W.

Cooperation. Water-stage recorder inspected by employee of Spokane Valley Farms Co. 

Three discharge measurements furnished by Washington Water Power Co.

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

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3 

3

3

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

11

0.35

22

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

34

54

54

54

96

106

107

107

612

20.4

1,210

May

108 

108

156

173

175

175

178

*185

190

191

192

190

190

189

216

243

272

280

292

300

303

312

312

312

310

312

*309

312

283

293

289

7,350

237

14,580

June

296

301

300

299

295

288

287

293

298

296

299

305

299

309

308

*304

307

297

303

303

301

291

285

259

255

263

289

287

286

284

8,767

292

17,390

July

280

279

277

273

270

258

257

255

255

254

260

264

264

264

262

263

263

244

»221

257

256

254

255

262

262

257

257

253

253

263

8,073

260

16,010

Aug.

"257 260

259

259

»259

254

251

*250

249

248

247

246

249

251

253

252

251

250

249

249

248

248

246

*246

249

248

238

233

233

*234

251

7,697

248

15,270

Sept.

228 

227

219

g207

g!98

g!98

g!96

g!94

g!84

g!84

*182

180

180

180

179

9

3

3

3

3

3

1

0

0

0

0

0

0

0

0

2,961

98.7

5,870

Calendar year 1955: Max 300 Mln 0 Mean 87.0 Ac-ft 62,950

Water year 1955-56 : Max 312 Mln 0 Mean 96.9 Ac-ft 70,350

* Discharge measurement or observation of no flow made on this day. 

g Computed from twice-daily staff-gage readings.
258 SPOKAKE RIVER BASIN

Spokane River near Post Falls, Idaho

in SW£sw£ sec. 4, T. 50 N., R. 5 W., on right 

of Washington Water Power Co., lj miles downmiles southwest of Post

Location . ~Lat 47°42'10", long 116°58'40", 

bank 1 mile downstream from powerplant of 

stream from intake of Spokane Valley Farms Co.'s canal, and 

Falls.

Drainage area. 3,840 sq mi, approximately, of which about 122 sq mi in the vicinity of 

Hayden Laice is noncontributing to this station.

Records available . January 1913 to September 1956. Prior to October 1949, published as 

"at Post Falls."

Gage. Water-stage recorder. Datum of gage is 2,000.00 ft above mean sea level, referenced 

to same datum as gage on Coeur d'Alene Lake at Coeur d'Alene (see p. ). Datum of 

1929, supplementary adjustment of 1947, is 3.00 ft higher. Jan. 1, 1913, to Nov. 21, 

1920, staff gage and Sept. 16, 1934, to Nov. 15, 1949, water-stage recorder, at site 

0.8 mile upstream. Nov. 22, 1920, to Sept. 15, 1934, water-stage recorder at site 

0.6 mile upstream. All gages at present datum.

Average discharge . River only, 43 years, 6,096 cfs (4,413,000 acre-ft per year); river, 

Spokane Valley Farms Co.'s canal, and Rathdrum Prairie Canal, 43 years, 6,203 cfs 

(4,491,000 acre-ft per year).

Extremes . Maximum discharge during year, 38,600 cfs Apr. 27 (gage height, 73.85 ft); minimum, 133 cfs Sept. 7 (gage height, 55.19 ft); minimum daily, 139 cfs Sept. 6, 7.

1913-56: Maximum discharge, 50,100 cfs when recorder was not operating Dec. 25, 1933 

(determined from unpublished records collected by Washington Water Power Co. for station 

at Liberty Bridge); minimum daily, 120 cfs Aug. 27, 28, Sept. 5, 9, 10, 1955.

Remarks . Records excellent. Spokane Valley "Farms Co.'s canal (see preceding page) and 

Rathdrum Prairie Canal (see p. 256) divert water above gage for irrigation. Figures of 

daily discharge do not include water diverted by these canals. Flow regulated by dam 

at Post Falls and affected by storage in Coeur d'Alene Lake (see p. 254).

Cooperation. Water-stage-recorder graph furnished by Washington Water Power Co.

Revisions. WSP 1182: 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

(t)

Oct.

1,440 

1,450

2,280

2,200

2,210

2,260

2,270

2,060

1,150

2 , 680

5,140

4,470

3,530

3,570

3,590

3,580

3,570

3,590

3,620

3,620

3,770

3,690

3,480

3,680

3,720

3,720

3,740

3,720

*3,690

3,720

3 , 690

98,880

3,190

196,100

22

Nov.

5,680 

4,040

4,320

4,380

4,470

4,640

4,850

4,600

4,510

4,650

5,060

5,580

6,040

6,060

6,060

5,960

5,920

6,240

6,780

6,670

6,600

6,540

6,490

6,330

6,700

9,570

11,800

10,500

7,720

6,140

182,900

6,097

362,800

0

Dec.

6,140 

*6,460

6,080

6,080

5,880

5,890

5,500

5,730

6,130

5,900

5,880

10,300

15,500

15,300

14,900

10,900

8,260

6,980

6,730

10,900

14,300

16,000

16,700

20,100

22,800

22,900

22,900

25,100

22,500

21,700

21,400

389,640

12,570

772,800

0

Jan.

20.600 

19,400

18,300

17,700

17,100

16,600

16,000

15,500

13,400

12,900

12,500

10,100

8,760

8,710

8,690

8,220

*7,730

7,680

7,680

6,780

5,760

5.750

5,790

6,300

7,770

7,730

6,730

5,890

5,840

5 73C

5,840

325,460

10,430

641,600

0

Feb.

5,800 

5,730

5,850

5,670

5,690

,660

,660

,590

,280

,820

,760

,820

,820

,820

,820

,820

,820

,780

,640

.880

,760

,780

* ,790

,820

,740

,760

,820

,760

,820

145,760

5,026

289,100

0

Mar.

,880 

,850

,850

,850

,860

,860

,850

,850

,760

,720

,690

,670

,520

,480

,470

,460

,410

,560

,570

,580

4,830

5,320

7,100

8,830

10,30O

12,400

14,000

14,700

15,000

15,400

15.600

216,580

6,986

429,600

0

Apr.

15,700 

16,000

15,800

15,700

15,500

15,400

15,200

*15,200

15,000

14,800

15,200

16,100

17,400

18,900

20,900

23,200

25,700

27,500

28,600

29,700

30,900

32,500

34,600

35,800

36,600

*56,900

36,900

36,200

35,600

34,600

728,100

24,270

* 1,444

1,232

May

55,400 

51,700

50,500

29,500

28,300

27,200

26,400

25,800

26,000

27,200

28,400

29,400

29,600

29,300

28,400

27,600

27,100

27,200

28,000

28,800

30,400

31,400

31,900

32,200

32 , 000

*31,700

31,100

50,400

29,6OO

28,500

27,700

906,500

29,240

*1,798

16,450

June

26,900 

26,200

25,400

24,700

23,700

22,700

21,400

20,300

19,100

17,700

17,000

16,100

15,400

14,700

*14,200

13,900

13,500

13,200

12,400

12,000

11,500

11,200

9,120

5,120

4,130

2,960

2,760

1,200

1,220 

380

419,890

14,000

832,800

18,900

July

263 

977

1,940

1,350

2,620

2,910

2,940

1,480

2,500

2,440

2,870

2,960

5,270

1,230

1,200

3,090

1,920

1,610

*1,490

1,620

2,240

2,050

1,200

1,400

1,410

1,400

877

210

231

1,130 

919

53,727

1,735

106,600

19,420

Aug.

1,080 

840

1,100

1,060

301

765

772

780

825

840

643

247

832

825

855

852

810

173

222

848

402

402

305

*535

439

2,080

2,520

840

818

1,070

1,050

25,111

810

49,810

18,030

Sept.

825 

458

420

224

166

139

139

142

242

1,050

1,010

1,220

1,380

1,450

1,420

1,460

1,460

1,350

1,050

1,490

1,480

1,480

1,510

1,490

1,490

1.510

1,500

1,470

1,480

1,480

31,985

1,066

63,440

7,970

Adjusted for diversion

Mean

Cfsm

In.

Ac-ft

3,190

-

_

196,100

6,097

-

_

362,800

12,570

-

_

772,800

10,430

-

_

641,600

5,026

-

_

289,100

6,986

-

-

429,600

24,290

-

-

* 1,445

29,510

-

-

*1,814

14,310

-

-

851,700

2,049

-

-

126,000

1,103

-

-

67,830

1,200

-

-

71,420

Calendar year 1955: 

Water year 1955-56:

Max 

Max

25, 

36,

300 

900

Mln 

Min

120 

139

Mean 

Mean

6 

9

,640 

,624

Ac-ft 

Ac-ft

4,807 

6,987

,000

,000

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean 

Mean

6, 

9,

724

737

Cfsm 

Cfsm

1.75 

2.54

In. 23 

34

.83 

.52

Ac-ft 

Ac-ft

4,881 

7,068

,000 

,000

* Discharge measurement made on this day.

t Diversion In acre-feet through Spolcane Valley Farms Co.'s canal and Rathdrum Prairie Canal.

* Expressed in thousands.
SPOKANE RIVER BASIN 259

Spokane River above Liberty Bridge, near Otis Orchards, Wash.

Location.--Lat 47°40'55", long 117°05'05", in NW* sec. 11, T. 25 N., R. 45 E., on left 

bank 1.2 miles upstream from Liberty Bridge, if miles southeast of Otis Orchards, and 

3.3 miles northeast of Greenacres.

Drainage area.--3,880 sq mi, approximately. 

Records available. October 1950 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,000 ft above mean sea level (levels by 

Washington Water Power Co.).

Average discharge. 6 years, 6,782 cfs (4,910,000 acre-ft per year), unadjusted.

Extremes.--Maximum discharge during year, 38,800 cfs Apr. 26 (gage height, 20.43 ft); minImum daily, 105 cfs Sept. 9.

1950-56: Maximum discharge, that of Apr. 26, 1956; minimum, 61 cfs Aug. 7, 1951; 

minimum gage height observed, 7.67 ft Sept. 2, 1955.

Maximum stage known since 1932, 22.24 ft Dec. 25, 1933 (discharge, 50,100 cfs), 

determined from unpublished records collected by Washington Water Power Co. at this 

station.

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

fair. Flow partly regulated by powerplant at Post Falls, Idaho, and by Coeur d'Alene 

Lake (see p. 254 ). Spokane Valley Farms Co.'s canal (see p. 257 ) and Rathdrum Prairie 

Canal (see p. 256) divert water above station for irrigation.

Cooperation.--Gage-height record collected in cooperation with Washington Water Power Co.

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

in cubic feet per second)

Oct. 1 to Apr. 21 Apr. 22 to Sept. 30

9.5 1,130

10.0 1,640

11.0 3,000

12.0 4,800

14.0 10,200

16.0 17,600

19.0 30,700

10

99

171

425

745

1,670

11.0 3,000

13.0 7,160

16.0 17,600

20.1 37,200

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

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,350 

1,350

2,130

2,110

2,130

£,180

2,110

2,000

1,210 

*2,450

5.010

4,510

3,400

3,460

3,440

3,400

3,370

3,390

3,420

3,420

3,540

3,460

3,320

3,440

3,490

3,520

3,510

3,510

3,490

3,520

3,510

94,150

3,037

186,700

Nov.

3.470 

3,820

4,130

4,190

4,230

4,420

4,660

4,460

4,300 

4,460

4,740

5,370

5,830

5,850

5,830

5,780

*5,730

6,040

6,540

6,460

6,360

6,, 330

6,280

6,120

6,330

9,130

11.500

10,500

7,360

6,020

176,240

5,875

349,600

Dec.

5,850 

6,2SO

5,900

5,900

5,680

5,660

5,150

5,530

5,950 

5,680

5,660

9,530

15,500

15,300

a!5,100

all, 400

a8,600

a7,520

a6,740

a 10, 800

14,300

15,900

16,500

*20,000

22,600

25.500

23,300

23,000

22,300

21,800

21,400

388,130

12,520

769,800

Jan.

20 . 800 

19 , 600

18,400

17,800

17,100

16,600

16,000

15,400

13,200 

12,600

12,300

10,000

8,510

8,450

8,450

7,970

7,440

7,410

7,410

6,560

5,550

5.550

5,590

*6,020

7,550

7,520

6,640

5,730

a5,770

a5,770

5,780

319,450

10,300

633,600

Feb.

5. 760 

5,640

J5,730

5,570

5,570

5,550

5,530

5,480

5,310 

a5,130

a4,890

4,700

4,780

4,760

4,800

4,920

4,800

4,760

4,740

a4 . OOP

4,700

4,700

4,680

4,660

4,620

4,660

4,680

4,660

4,700

144,480

4,982

286,600

Mar.

4,800 

4,760

4,780

4,760

4,760

4,780

4,760

4,760

4,760 

4,680

4,640

4,620

4,480

*4,420

4,400

4,380

4,340

4.520

4,340

4,340

4,660

5,150

6,590

8,480

10,000

11,900

13,700

14,700

15,200

15,500

15 800

213,560

6,889

423,600

Apr.

16,000 

16,000

15,900

15,800

15,600

15,400

15,200

15,200

15,000 

14.800

15,000

16,100

17,700

19,300

21,000

*23,000

25,400

27,000

28,100

28 , BOO

30,100

32,000

34,400

35,800

36,800

57.000

*36,800

36,200

35,400

34,500

725,300

24,180

*1,439

May

52.400 

31,100

29 , 800

28,600

27,800

26,900

26,000

25.500

25,700 

26,700

27,800

29,300

28,900

28,600

27,800

*27,000

26 , 400

26,600

27,200

27,900

29 , 500

30,500

31,000

31,300

31,100

30,900

30,400

29,600

28,800

27,800

27,000

885,900

28,580

*1,757

June

26.500 

25,600

24,800

24,200

23,200

22,200

21,000

19,990

18,800 

17,900

17,000

15,900

15,400

14,600

14,100

13,700

13,200

13,000

12,300

11,900

11,400

11,100

9,170

5,080

4,210

2,710

2,750

1,300

1,210

602

414,532

13,820

822,200

July

275 

*970

1,820

1,240

2,560

2,760

2,910

1,620

2,380 

2,420

2,740

2,910

3.500

1,330

1,110

2,990

1,940

1,570

1,430

1,560

2,020

2,080

1,150

1,320

1,320

 1,510

979

230

225

995

852

52,316

1,688

103,800

Aug.

954 

860

997

997

419

687

766

759

794 

815

753

197

733

787

815

815

794

255

JL32

883

418

388

312

398

481

1,560

2.670

845

787

997

970

24,038

775

47,680

Sept.

795 

514

385

235

167

119

116

allO

alOS 

*1,000

914

1,110

1,240

1,350

1,330

1,360

1,350

1,350

*883

1,370

1,350

1,350

1,370

1,360

1,380

1.590

1,390

1,380

1,380

1,390

29,542

985

58,600

Calendar year 1955 : Max 24,500 Min 100 Mean 6,511 Ac-ft 4,714,000

Water year 1955-56 : Max 37,000 Mln 105 Mean 9,474 Ac-ft 6,878,000

* Discharge measurement made on this day. 

t Expressed in thousands.

a No gage-height record; discharge estimated on basis of gage-height record for stations near Post 

Palls, Idaho, and other Spokane River stations.
260 SPOKANE RIVER BASIN

Liberty Lake at Liberty Lake, Wash.

Location. Lat 47°39'10", long 117°05'20", in NE^ sec. 22, T. 25 N. , R. 45 E., on right 

wall of concrete outlet flume at town of Liberty Lake, 15 miles east of Spokane.

Drainage area. 13.7 sq mi.

Records available. December 1950 to September 1956 (fragmentary).

Gage.--Staff gage read once daily. Datum of gage is 2,046.48 ft above mean sea level, 

oatum of 1929, supplementary adjustment of 1947. Prior to Apr. 11, 1952, staff gages at 

various locations within a few feet of present site at same datum.

Extremes. Maximum gage height observed during year, 3.20 ft Apr. 25-28; minimum observed, 

0.50 ft Oct. 5.

1950-56: Maximum gage height observed, 4.42 ft May 1, 3, 1952; minimum observed, 

-0.12 ft Aug. 30, 1951.

Remarks.--Stage controlled by gate at outlet. No known diversion.

Oage 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.

.

-

-

-

0.50

-

-

-

-

.64

_

-

.62

-

-

-

.60

-

-

.60

.

-

-

-

-

.64

-

-

-

. 68

Nov.

.

-

0.68

-

-

.

-

-

-

-

_

-

-

-

.69

.

-

-

-

-

_

-

-

-

.94

_

-

-

1.00

" 

Dec.

1.10

-

_

1.10

-

.

1.14

1.10

-

1.16

_

1.28

1.38

-

-

.

1.48

-

-

-

1.54

1.70

1.88

2.08

2.10

2.30

2.40

2.40

2.42

Jan.

2.44

2.46

-

2.58

2.64

2.70

2.74

2.74

2.74

2.74

2.68

2.68

2.68

2.70

2.74

2.74

2.70

2.70

2.68

2.66

2.68

2.67

2.66

2.66

2.64

2.64

2.62

2.60

2 58

2^54

Feb.

2.50

2.50

2.44

2.40

2.40

2.38

2.36

2.32

2.30

2.28

2.24

2.20

2.16

2.14

2.10

2.08

2.08

2.04

2.02

1.98

1.96

2.00

1.98

1.86

1.84

1.90

1.90

1.94

1.90

_______

Mar.

1.90

1.90

1.92

1.92

1.94

1.94

1.94

1.94

1.94

1.92

1.88

1.88

1.88

1.86

1.84

1.84

1.80

T750~

1.80

1.80

1.86

1.90

1.98

2.10

2.20

2.36

2.44

2.50

2.60

2 66 

2. 70

Apr.

2.78

2T50"

2.80

2.80

2.80

2.84

2.80

2.84

2.82

2.82

2.82

2.82

2.84

2.86

2.90

2.94

2.96

2.98

3.04

3.08

3.08

3.10

3.14

3.18

3.20

3.20

3.20

3.20

3.18

3.14

May

370~6" 3.10

3.04

2.98

2.98

2.94

2.90

2.88

2.86

2.84

2.82

2.80

2.80

2.76

2.76

2.68

2.66

2.60

2.54

2.50

2.48

2.48

2.48

2.48

2.50

2.54

2.54

2.54

2.50

2.46 

2.44

June

2.44

2.42

2.42

2.42

2.42

2.42

2.40

2.38

2.38

2.38

2.36

2.34

2.32

2.32

2.34

2.38

2.42

2.42

2.44

2.46

2.44

2.40

2.40

2.38

2.36

2.36

2.34

2.32

2.30

2 . 28

July

2.26

272?

2,22

2.22

2.22

2.20

2.20

2.18

2.16

2.14

2.12

2.10

2.08

2.06

2.04

2.04

2.00

1.98

1.96

1.96

1.96

1.94

1.92

1.90

1.86

1.83

1.80

1.78

1.74

1.70 

1.68

Aug.

1.68 T76"6~

1.64

1.60

1.58

1.56

1.54

1.50

1.48

1.46

1.44

1.42

1.42

1.38

1.36

1.34

1.30

1.28

1.26

1.22

1.20

1.18

1.16

1.14

1.12

1.12

1.12

1.14

1.10

1. 08 

T7T58"

Sept.

1.08

1.08

1.04

1.04

1.00

.96

.94

.94

.90

.90

.88

.86

.84

.84

.82

.78

.78

.78

.74

.70

.70

.70

.70

.68

.68

.66

.64

.62

.60

 :__
SPOKANE RIVER BASIN 261

Spokane River at Spokane, Wash.

Location. Lat 47°39'35", long 117°26'50", in SWij sec. 13, T. 25 N., R. 42 E., on right

 bank at Cochran Street in Spokane, half a mile upstream from Latah Creek.

Drainage area. 4,290 sq mi, approximately. 

Records available.--April 1891 to September 1956.

Gage --Water-stage recorder. Datum of gage is 1,696.6 ft above mean sea level, datum of

 1929 (river-profile survey). Prior to July 1, 1921, water-stage recorders and staff or 

wire-weight gages at several sites within 4 miles of present site at various datums.

Average discharge.--65 years, 6,819 cfs (4,937,000 acre-ft per year), unadjusted.

Extremes.--Maximum discharge during year, 37,800 cfs Apr. 27 (gage height, 27.95 ft); minimum, 95 cfs Sept. 19 (gage height, 15.60 ft); minimum daily, 1,100 cfs Sept. 9.

1891-1956: Maximum discharge, 49,000 cfs (estimated) May 31, 1894 (see WSP 532); 

minimum, that of Sept. 19, 1956; minimum daily, 740 cfs Sept. 7, 1947.

Remarks. Records good. Flow partly regulated by powerplant of Washington Water Power Co. 

aTTost Falls, Idaho, and at Spokane. and by Coeur d'Alene Lake (see p. 254). Spokane 

Valley Farms Co.'s canal (see p. 257) and Rathdrum Prairie Canal (see p. 256) divert 

water above station for irrigation. In 1946, approximately 22,600 acres were under 

irrigation upstream from Spokane, of which about 15,000 acres utilized surface water.

Cooperation.--Gage-height record collected in cooperation with Washington Water Power Co.

Revisions (water years).--WSF 532: 1891-1904. WSP 1246: Drainage area. WSP 1286: 

1907-9.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

17.3

18.0

19.0

20.0

1,020

1,840

3,520

5,560

21.0

23.0

25.0

28.0

8,020

14,400

22,500

38,100

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

Tota:

Mean

Ac- ft

Oct.

2,220

1.970

2,380

2,620

2,750

2,690

2,690

2,800

2,430

 2,270

4,740

5.020

3,860

3,800

3,940

3,820

3,920

3,860

3,900

3,860

4,070

3,920

3,940

3,840

3,980

4,010

4,030

4,030

4,000

3,980

4,000

109,340

3,527

216,900

Nov.

3.940

4,150

4,530

4,550

4,640

4,720

4,980

4,850

4,680

4,830

4,980

5,700

6,020

' 6,090

 6,140

6,110

6,110

6,230

6,810

6,710

6,590

6,620

6,570

6,450

6,470

8,550

10.900

10,400

8,240

6,690

184,250

6,142

365,500

Dec.

6,330

6,930

6,350

6,400

6,330

6,180

5.920

5,940

6,540

6,260

6,330

8,540

14,800

14,700

14,400

11,700

8,520

7,790

6,690

9,840

14,000

 15,300

15,800

18,600

21,400

22,500

22.700

22,400

21,900

21,200

20,900

383,190

12,360

760,000

Jan.

20.300

19,300

18,400

17,900

17,200

16,700

16,100

15,600

14,000

13,200

12,800

11,300

9,420

9,200

9,250

8,940

8,360

8,300

8,270

7,810

6,660

6,620

6,570

6,690

8,220

8,130

7,660

6,620

6,620

6.540

6,640

339,320

10,950

673,000

Feb.

 6,330

6,330

6.350

6,260

6,260

6,160

6,180

6,140

5,940

5,440

*5,380

5,380

5,380

5,400

5,350

5,400

5,380

5,310

5,330

4.510

5,400

5,380

5,330

5,350

5,290

5,330

5,380

5,380

5,290

162,340

5,598

322,000

Mar.

5,400

5,380

5,420

5,350

5,380

5,400

5,380

5,380

5,350

5,310

5,290

5,260

5,090

5,110

*5,020

4,960

5,000

4.890

4,980

4,980

5,240

5,700

6,980

8,640

9,930

11,800

13,300

14,300

14,600

15,000

15^300

225,120

7,262

446,500

Apr.

15,500

15,600

15,500

15,500

15,300

15,200

15,000

15,000

14,900

14.700

14,900

15,800

17,100

18,400

19,900

*22,100

24,400

26,400

*27,600

28,600

30,000

31,500

33,500

35,300

36,200

36,700

 36.800

36,400

35,600

34,800

714,200

23,810

tl,417

May

55.700

32 1 200

30,800

29,500

28,600

27,400

26,600

26.000

26,200

27,300

28,400

29,300

29,600

29,600

28,700

27,900

 27,200

27,400

28,000

28,600

30,000

31,200

32,100

32,200

32,100

31,900

31,400

30,700

29,800

28,800

28,000

911,200

29,390

tl,807

June

27 t 200

26 i 400

25,600

25,000

24,200

23,300

22,100

21,000

20,000

19,000

18,000

17,000

16,300

15,700

15,200

14,800

14,200

14,100

13,500

13,000

12,500

12,100

11,100

7,020

6,330

*4,510

4,550

3,560

3,030

2.660

452,960

15,100

898,400

July

1,970

2,560

2,820

2,890

3,480

3,900

4,090

3,380

*3,110

3,810

3,500

3,940

4,220

3,090

2,360

3,620

3,200

2,800

2,600

2,600

2,730

3,360

2,270

2,400

2,360

 2,330

2,220

1,600

1,400

1,770

1,940

88,320

2,849

175,200

Aug.

1,910

 1,970

2,140

1,840

1,810

1,500

1,740

1,710

1,700

1,710

1,700

1,380

1,480

1,690

1,700

1,660

1,650

1,360

1.150

1,520

1,350

1,360

1,420

1,210

1,300

1,920

3.620

1,990

1,760

1,880

1,940

53,080

1,712

105,300

Sept.

1,870

1,560

1,240

1,330

1,200

1,130

1,130

1,120

1.100

1,680

 1,650

1,870

1,970

2,080

2,160

2,120

2,140

2.560

*1,740

2,120

2,120

2,190

2,240

2,190

2,200

2,170

2,240

2,240

2,120

2,200

55,480

1,849

110,000

Calendar year 1955: Max 26,000 Mln 841 Mean 7,082 Ac-ft 5,128,000

Water year 1955-56 : Max 36,800 Mln 1,100 Mean 10,050 Ac-ft 7,297,000

 Discharge measurement made

* Expressed In thousands.

this day.
262 SPOKANE RIVER BASIN

Latah Creek at Spokane, Wash.

Location.- -La t 47°39'10", long 117°26'55", in NW£ sec. 24, T. 25 N., R. 42 E., on left 

bank in Spokane, three-quarters of a mile upstream from mouth.

Drainage area. 619 sq mi.

Records available . April 1948 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,720 ft (from topographic map). Prior 

to Nov. 22, 1948, wire-weight gage at site half a mile upstream at different datum.

Average discharge.--8 years, 273 cfs (197,600 acre-ft per year).

Extremes.--Maximum discharge during year, 11,300 cfs Dec. 22 (gage height, 12.16 ft), from 

rating curve extended above 7,400 cfs; minimum, 7.7 cfs Oct. 4 (gage height, 2.26 ft).

1948-56: Maximum discharge, 11,900 cfs May 24, 1948 (gage height, 18.73 ft, from 

floodmarks, site and datum then in use), from rating curve extended above 7,300 cfs on 

basis of slope-area and contracted-opening determinations of peak flow; minimum, 3.8 cfe 

Sept. 4, 5, 8, 1955 (gage height, 2.12 ft).

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

which are fair. No regulation. A few small diversions for irrigation above station.

Revisions.--WSP 1216: Drainage area.

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

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

2.2 

2.4 

2.7 

3.0 

3.4 

4.0

5.8

12.5

28

54

107

231

5.0

6.0

7.0

8.0

10.0

12.0

545

1,030

1,750

2,740

5,810

10,800

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Obtal

Mean

Cfsin

In.

Ac -ft

Oct.

9.3

8.3

8.0

8.6

8.9

8.3

8.3

9.6

12.5

20

*22

35

53

33

26

20

17.5

15

14.5

13.5

12

12

11

12

12

13

14

14.5

15.5

16.5 

19

502.8

16.2

0.026

0.03

997

Nov.

23

29

29

28

26

26

43

40

34

34

31

29

25

16

15

15

15

*15

16

61

278

488

367

274

189

1,140

1,160

549

*352

293

5,640

188

0.304

0.34

11,190

Dec.

288

410

310

246

160

144

160

125

162

150

187

*5,450

*3,020

852

358

304

256

231

259

331

2,070

9.280

*5,080

1,810

969

1,180

2,590

1,160

609

334

282

38,767

1,251

2.02

2.33

76,890

Jan.

261

226

285

2.540

1,860

1,200

1,140

910

557

509

517

621

589

573

470

616

1,820

1,280

934

775

710

1,310

2,510

1,680

910

*550

350

250

200

180 

170

26,503

855

1.38

1.59

52,570

Feb.

170

170

170

170

170

170

170

170

170

170

180

198

251

364

277

187

187

185

111

118

158

785

557

373

285

261

259

261

505

7,202

248

0.401

0.43

14,280

Mar.

1,220

2,400

3,140

1,460

855

613

545

477

480

424

310

307

334

282

*319

484

934

1,540

2,250

2,860

3,630

5,290

4,500

3,180

2,S80

4,180

3,320

1,940

1,530

1,480

1,680

54,644

1,763

2.85

3.28

108,400

Apr.

1.380

1,080

875

760

684

638

589

638

589

525

517

577

573

561

549

533

502

446

391

370

349

340

334

325

313

296

261

214

189

177

15,575

519

0.838

0.94

30,890

May

166

156

144

140

154

181

158

144

460

470

460

328

261

229

189

162

*146

131

118

109

99

90

84

88

88

85

84

77

75

72

SI

5,215

168

0.271

0.31

10,340

June

64

62

60

63

64

66

69

65

57

53

49

47

45

46

52

65

131

156

111

30

81

76

69

61

55

52

49

44

41

39

1,982

66.1

0.107

0.12

3,930

July

38

a37

a36

a35

a34

a34

a33

a32

*32

31

31

30

29

29

29

26

25

24

24

26

26

24

23

23

22

*22

21

21

20

20 

20

857

27.6

0.045

0.05

1,700

Aug.

21

*22

22

22

22

22

20

19.5

19

18.5

19

19

18.5

18.5

19

18.5

18

18

18

18.5

18

17.5

18

18

18.5

24

23

24

23

23 

23

623.0

20.1

0.032

0.04

1,240

Sept.

23

22

22

23

22

21

21

20

20

*19.5

19

19

19

19

19

19

19

20

21

20

20

19

19.5

19

19.5

19.5

19.5

20

20

21

604.5

20.2

0.033

0.04

1,200

Calendar year 1955: Max 9,280 Min 4.0 Mean 246 Cfsm 0.397 In. 5.40 Ac-ft 178,100

Water year 1955-56: Max 9,280 Mln 8.0 Mean 432 Cfsm 0.698 in. 9.50 Ac-ft 313,600

27

. 

11,300 cfs (12.16 ft); Dec 850 cfs (8.86 ft); Jan

Jan. 23 (2:30 p.m.) 2,680 

5,750 cfs (9.97 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 

records

.. 

cfs (9.11 ft)

corded range in stage and weather

Hote. --Stage -discharge relation affected by ice Nov. 13-19, Dec. 21, Jan. 26 to Feb. 11.
3POKANE RIVER BASIN 263

Medical Lake at Medical Lake, Wash.

Location. La t 47°34'23", long 117°41'00", in SE^NWi sec. 18, T. 24 N., R. 41 E., at end of 

Lake Street in town of Medical Luke. Prior to Sept. 11, 1956, at site 0.5 mile northwest.

Drainage area. ~1. 50 sq mi.

Records available .--March 1953 to September 1956 (fragmentary).

Gage. --Staff gage read twice weekly. Datum of gage is 2,385.34 ft (revised) above mean sea 

level. Gage readings have been reduced to elevations above mean sea level. Mar. 29, 

1953, to May 25, 1954, at present site at datum 10 ft higher. May 26, 1954, to Sept. 10, 

1956, at site 0.5 mile northwest at causeway to State Hospital in town of Medical Lake 

at present datum.

Extremes. Maximum elevation observed during year, 2,391.82 ft Apr. 2- minimum observed 

2~7387.69 ft Sept. 24 , 28 .

1953-56: Maximum elevation ODserved, 2,397.97 ft Mar. 19, 1954; minimum observed, 

that of Sept. 24, 28, 1956.

Remarks . Lake has no natural surface outlet. Since Mar. 14, 1954, a pump has been in 

operation intermittently to lower the lake. The water is pumped into a tributary of 

Deep Creek.

Elevation, In feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

.

-

-

-

-

9O.96

-

-

-

-

.

-

-

-

-

_

-

-

-

-

-

-

-

-

90.54

-

-

-

-

-

Nov.

90.35

-

-

90.21

-

_

90.18

-

-

-

90.15

-

-

-

-

_

90.02

-

-

-

-

-

-

-

-

.

-

-

-

Dec.

9O.85

Jan.

.

-

-

-

-

.

-

-

-

-

_

-

-

-

-

_

-

-

-

-

.

-

91.24

-

-

-

91.34

-

-

91.24

Fib.

.

-

HI. 22

-

-

HI. 19

-

-

-

131.19

.

-

'31.29

-

-

.

'31.24

-

-

 31.34

.

-

-

HI. 44

-

.

 31.44

-

-

Mar.

_

91.39

-

-

91.44

_

-

-

91.44

-

.

91.49

-

-

-

91.54

-

-

91.54

-

_

-

91.59

-

-

91.69

-

-

-

91 79

Apr.

.

91.82

-

-

-

91.76

-

-

91.74

-

_

-

91.54

-

-

91. 09

-

-

-

90.76

_

-

90.72

-

-

_

9O.59

-

-

90.44

May

.

-

-

9O.39

-

_

9O.29

-

-

-

90.24

-

-

9O.29

-

.

-

9O.39

-

-

90.44

-

-

-

90.44

.

-

9O.42

-

June

9O.44

-

-

9O.34

-

.

-

9O.34

-

-

90.29

-

-

-

90.04

_

-

90.09

-

-

_

89.94

-

-

89.44

_

-

-

89.34

July

.

89.34

-

-

-

89.20

-

-

89.10

-

_

-

89.02

-

-

88.90

-

-

-

88.76

.

-

88.72

-

-

_

88.34

-

-

Aug.

.

-

88.52

-

-

88.34

-

-

-

88.32

.

-

87.94

-

88.25

.

87.84

-

-

87.82

_

-

-

87.80

-

.

87.80

_

-

87.78

Sept.

_

-

87.78

-

-

-

87.76

-

-

87.74

87.81

-

-

87.74

-

_

87.72

-

-

-

87.72

-

-

87.69

-

_

-

87.69

-

Hote. Add 2,300 ft to obtain elevation above mean sea level.

467240 O -58 - 18
264 SPOKANE RIVER BASIN

Little Spokane River at Elk, Wash.

Location. Lat 48"01'20", long 117°16'20", in SE£ sec. 8, T. 29 N., R. 44 E., on right bank 

half a mile upstream and northeast of Elk.

Drainage area. 115 sq mi.

Records available.--July 1948 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,875 ft (from topographic map).

Average discharge.--8 years, 60.7 cfs (43,940 acre-ft per year).

Extremes.--Maximum discharge during year, 148 cfs Apr. 7 (gage height, 1.87 ft); maximum 

gage height, 3.08 ft Feb. 1 (backwater from ice); minimum daily discharge, 38 cfs 

Nov. 17, 18.

1948-56: Maximum discharge, that of Apr. 7, 1956; minimum, 28 cfs Jan. 16, 1954 

(gage height, 1.01 ft).

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

which are fair. No regulation or diversion.

Revisions.--WSP 1216: Drainage area.

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

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

1.1

1.2 

1.4

38

66

1.6 

1.9

96

Discharge, in cubic feet per second, water 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

Cf sm

In.

Ac -ft

Oct.

44

43

42

42

43

43

42

43

47

55

*55

52

49

47

46

46

45

44

44

44

44

44

44

45

46

46

46

46

46

46 

46

1,415

45.6

0.397

0.46

2,810

Nov.

45

44

46

48

47

46

46

45

45

*46

44

44

43

42

b42

b39

b38

b38

b40

b42

45

44

44

44

52

56

54

51

49

49

1,358

45.3

0.394

0.44

2,690

Dec.

50

49

48

46

46

46

46

46

46

46

49

56

78

96

69

68

70

b65

b60

b55

*b52

74

77

72

68

72

77

74

69

65 

64

1,899

61.3

0.533

0.61

3,770

Jan.

64

62

63

76

80

77

74

74

74

73

72

72

72

73

72

73

74

72

70

69

68

69

70

70

70

68

66

65

b63

b60 

b5j>

2,161

69.7

0.606

0.70

4,290

Feb.

a52

a55

a59

a63

a66

a68

aTO

a68

»a66

56

55

54

54

b52

b49

b45

b47

b48

b49

b51

56

59

58

55

55

55

54

55

59

1,633

56.3

0.490

0.53

3,240

Mar.

60

62

64

64

62

60

59

59

58

58

57

56

*56

55

55

55

58

60

65

68

77

88

101

114

124

138

*144

T40

138

140 

144

2,539

81.9

0.712

0.82

5,040

Apr.

142

138

136

140

142

142

146

146

144

144

142

142

142

144

144

*144

144

142

140

134

132

132

130

132

130

128

126

122

118

116

4,104

137

1.19

1.33

8,140

May

114

112

112

110

108

106

105

103

103

103

99

99

96

*94

94

92

92

89

91

89

88

86

84

86

88

88

88

86

84

82 

80

2,951

95.2

0.828

0.95

5,850

June

82

80

80

83

83

83

83

82

80

80

77

76

76

77

82

84

83

82

78

80

78

77

76

76

74

74

74

73

72

72

2,357

78.6

0.683

0.76

4,680

July

73

73

IS

76

»76

76

74

73

70

69

68

66

66

66

65

64

63

63

62

60

60

60

58

58

56

54

*52

50

50

50 

50

1,977

63.8

0.555

0.64

3,920

Aug.

51

51

54

55

54

53

52

51

52

53

53

53

53

52

52

51

51

51

51

50

50

50

49

49

50

52

53

53

53

53 

53

1,608

51.9

0.451

0.52

3,190

Sept.

52

52

51

51

51

51

52

52

51

51

51

*51

51

51

51

50

49

49

49

49

49

49

49

49

i8

48

48

48

49

50

1,502

50.1

0.436

0.49

2,980

Calendar year 1955: Max 96 Min 37 Mean 50.3 Cfsm 0.437 In. 5.92 Ac-ft 36,430

Water year 1955-56: Max 146 Min 38 Mean 69.7 Cfsm 0.606 In. 8.25 Ac-ft 50,600

* Discharge measurement made on thi 

a No gage-height record; discharge 

and records for nearby streams.

b Stage-discharge relation affected by ice.

day.

timated on basis of recorded range in stage, weather records.
SPOKANE RIVER BASIN 265

Diamond Lake near Newport, Wash.

Location. Lat 48°08'05", long 117"10'35", in NE£ sec. 1, T. 30 N., R. 44 E., on southeast shore of Diamond Lake, 7 m'.les southwest of Newport.

Drainage area.--5.7 sq mi, approximately.

Records available.--July 1953 to September 1956 (fragmentary).

Gage. Staff gage read once daily. Altitude of gage is 2,340 ft (from topographic map).

Extremes.--Maximum gage height observed during year, 4.82 ft Mar. 10; minimum observed, 

 3~4T~ft Oct. 7, 8.

1953-56: Maximum gage height observed, 4.82 ft Apr. 14-17, 19, 1954, Mar. 10, 1956; 

minimum observed, 3.41 ft Sept. 27, 1955.

Remarks.--No known regulation or diversion.

Gage height, in feetj, water year October 1955 to September 1956

Day

1

2

3

4

5 

6

7 

8

9 

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

_

-

3.50

"

3.49 

3.49

-

3.70

-

3.71

-

3.7O

_

-

3.70

3.70

3.7O

-

-

3.74

_

3.74

_

3.74

-

Nov.

3.74

-

3.80

3. SO

3.80

3 32

.

3.82

-

-

-

_

3.90

-

3.90

3.90

-

-

-

4.10

-

_

4.10

Dec.

4.12

4.12

-

"

4.14

4.16

.

4.32

-

-

-

4.36

-

_

-

4.54

-

4.56

-

-

_

-

4.60

_

4.60

Jan.

4.66

-

4.70

"

4.68

-

4.58

-

-

4.60

-

_

4.62

_

-

4.68

_

-

-

-

_

-

_

_

J»eb.

_

-

-

"*

-

4.56

-

-

-

-

_

4.56

.

-

4.58

4.60

-

_

-

_

-

_

4.72

Mar.

_

4.76

-

"

4.8O

_

4.74

_

-

_

4.66

_

4.64

4.66

_

4.70

_

-

_

4.78

_

_

4.80

Apr.

_

4.73

-

4.72

4.72

-

4.70

_

4.70

-

-

_

4.72

.

-

4.72

_

_

4.74

-

4.74

_

4.74

May

4.72

-

4.72

4.72

4.76

-

4.76

4.76

_

4.76

4.76

_

4.76

_

4.75

4.75

_

_

-

4.76

_

_

_

4.76

June

4.74

-

-

4.74

4.74

-

_

4.72

-

4.71

4.72

4.76

-

4.76

-

4.76

_

4.76

.

-

_

4.70

_

4.66

4.66

July

-

4.64

-

4.64

4.63

4.62

-

4.66

-

4.77

-

.

4.72

4.72

_

-

4.66

-

4.62

4.62

4.58

_

4.52

Aug.

4.50

-

4.53

"

4.52

4.50

4.46

-

4.44

-

-

4.42

-

4.38

-

4.32

-

4.30

4.30

_

-

4.32

_

4.31

Sept.

4.30

-

4.26

"

4.22

-

.

4.20

-

4.19

4.16

_

-

4.14

4.12

4.09

-

_

-

4.08

-

_

4.O6
266 SPOKANE RIVER BASIN

Sacheen Lake near Newport, Wash.

Location. La t 48°09i55", long 117°18'05", in NW^NWi sec. 30, T. 31 N., R. 44 E., on concrete wall at southeast corner of bay at Sacheen Lake resort, 12 miles west of Newport.

Drainage area. --32. 2 sq mi.

Records available. April 1954 to September 1956 (fragmentary).

Gage. --Staff gage read once daily. Altitude of gage is 2,240 ft (from topographic map).

Extremes . Maximum gage height observed during year, 6.46 ft Apr. 16; minimum observed, 

4.04 ft Sept. 22, 23.

1954-56: Maximum gage height observed, that of Apr. 16, 1956; minimum observed, 

3.84 ft Aug. 7, 9, 11, 1954.

Remarks. --No known regulation or diversion.

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

16

19

20

21

22

23

24

25

26

27

28

29

30

31

oot.

_

-

-

-

-

_

-

-

-

-

4.98

-

-

-

4.96

_

-

-

-

-

_

4.90

4.90

4.69

-

_

_

_

4.98

_

4.96

Nov.

-

-

-

-

-

_

-

-

-

4.96

_

5.00

-

-

-

_

-

-.

5.00

-

_

-

_

_

-

5.00

_

_

-

_

Dec.

_

-

-

-

-

_

-

-

-

-

_

.

_

_

-

_

_

_

-

-

5.54

_

_

_

-

_

5.54

_

_

_

Jan.

_

-

-

-

-

5.60

-

-

-

5.60

_

_

_

-

-

_

_

_

5.40

_

_

_

_

5.20

_

_

_

_

_

Feb.

_

-

5.20

-

-

_

-

-

5.12

-

_

_

_

_

-

_

_

_

_

-

_

_

_

_

-

_

_

_

_

-------

Mar. Apr.

6.30

-

-

-

-

_

6.30

-

-

-

_

6.30

_

6.42

-

6.46

_

_

-

-

6.40

_

_

_

6.20

_

_

6.00

_

5.80

May

_

-

-

_

-

-

5.62

-

_

_

_

5.34

-

_

5.10

_

4.97

-

_

4.84

_

_

-

4.76

4.72

_

June

_

4.64

-

-

-

_

4.69

-

4.66

-

_

4.64

_

-

-

_

4.62

_

-

-

_

_

4.52

_

4.44

4.42

_

_

4.36

_

July

4.34

-

4.32

-

4.34

_

4.34

-

4.32

-

_

-

4.29

4.29

-

_

_

4.36

-

4.32

_

4.29

_

_

4.23

4.20

4.19

4.16

_

Aug.

4.14

-

-

-

-

_

4.18

-

-

-

4.16

-

-

-

-

_

4.11

-

-

4.10

_

_

_

4.07

4.10

_

_

_

_

Sept.

4.13

-

-

-

4.08

_

-

-

-

-

_

4.06

-

-

4.05

4.05

.

-

-

-

_

4.04

4.04

_

-

_

_

-

4.06

_
SPOKANE RIVER BASIN 267

Eloika Lake near Elk, Wash.

Location. Lat 48°01'45", long 117°22'25", In NE£ sec. 9, T. 29 N., R. 43 E., on east 

shore ij miles upstream from outlet and 5 miles northwest of Elk.

Drainage area. 87.5 sq ml.

Records available. May 1953 to September 1956.

Gage. Staff gage read once dally. Altitude of gage Is 1,920 ft (from topographic map),

Extremes. Maximum gage height observed during year, 7.66 ft Apr. 18; minimum observed, 

2.54 ft Oct. 2.

1953-56: Maximum gage height observed, that of Apr. 18, 1956; minimum observed, 

2.32 ft Sept. 3-6, 1955.

Maximum stage known, that of Apr. 18, 1956.

Remarks. No known regulation or diversion.

Qage 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.

2.55

2.54

T756

2.56

2.56

2.58

2.58

2.58

2.66

3.76

2.82

2.84

2.86

2.88

2.88

2.88

2.89

2.89

2.88

2.86

2.86

2.84

2.82

2.80

2.80

2.81

2.82

2.84

2.85

2.90

2750"

Nov.

2.91

Z.91

2.98

3.00

3.02

3.02

3.01

3.02

3.01

3.03

3.03

3.02

3.01

3.01

3.00

3.00

3.00

3.00

3.00

3.00

2.99

2.98

2.98

2.97

2.98

3.10

3.14

3.16

3.18

3.20

_______

Dec.

3.24

3.26

3.26

3.24

3.24

3.24

3.23

£4i 3T5T

3.21

3.27

3.32

3.36

3.34

3.33

3.33

3.33

3.35

3.37

3.38

3.43

3.58

3.68

3.80

3.86

3.94

4.08

4.18

4.21

4.22

TTzTJ

Jan.

4.20

4.20

4.24

4.32

4.34

4.36

4.37

4.38

TTST

4.36

4.33

4.30

4.30

4.28

4.26

4.26

4.26

4.22

4.18

4.14

4.10

4.08

4.06

4.04

4.01

3.99

3.97

3.95

3.92

3.89

3.87

Feb.

3.85

T784"

3.82

3.80

3.79

3.76

3.74

3.70

3.68

3.67

3.66

3.66

3.65

3.64

3.63

3.63

3.62

3.61

3.59

376U

3.63

3.66

3.68

3.69

3.71

3.72

3.72

3.76

3.80

________

Mar.

3.80

3782"

3.84

3.90

3.90

3.90

3.92

3.94

3.94

3.94

3.91

3.88

3.88

3.86

3.84

3.86

3.86

3.86

3.92

3.96

4.08

4.20

4.42

4.68

5.02

5.44

5.92

6.14

6.44

6.62

6.71

Apr.

6.79

6.84

6.84

6.86

6.84

6.86

6.88

6.86

6.80

6.78

6.82

6.92

7.06

7.18

7.32

7.48

7.58

7.66

77*5

7.36

7.28

7.22

7.18

7.17

7.17

7.07

6.92

6.82

6.58

6.40

May

6.24

S7T4"

5.94

5.84

5.74

5.60

5.50

5.34

5.34

5.34

5.24

5.19

5.14

5.06

5.02

4.94

4.89

4.84

.78

.74

.70

.64

.54

.48

.46

.42

.36

.30

.24

4.20

4.14

June

4~7C6~ 4.08

4.05

4.04

3.94

3.84

3.82

3.80

3.78

3.76

3.74

3.68

3.63

3.62

3.61

3.64

3.66

3.68

3.58

3.58

3.57

3.56

3.56

3.50

3.44

3.42

3.40

3.37

3.33

3.30

July

3.24

3.22

3.22

3.22

3.20

3.25

T7ST

3.25

3.23

3.20

3.20

3.20

3.20

3.20

3.18

3.16

3.12

3.10

3.10

3.10

3.10

3.06

3.02

2.98

2.94

2.92

2.90

2.86

2.84

2.82

2.79

Aug.

2.77

2.76

2.75

2.79

2779"

2.78

2.76

2.75

2.74

2.74

2.73

2.72

2.72

2.71

2.69

2.68

2.66

2.64

2.63

2.63

2.62

2.61

2.60

7756"

2.60

2.63

2.68

2.69

2.70

2.70

2.70

Sept.

2.69

276T

2.66

2.65

2.65

2.64

2.63

2.63

2.63

2.62

2.62

2.62

2.61

2 '.60

2.59

2.59

2.59

2.59

2.59

2.58

2.57

2.56

275S

2.56

2.56

2.56

2.56

2.B7

2.57

2.60

 
268 SPOKANE RIVER BASIN

Little Spokane River at Dartford, Wash.

Location.--Lat 47°47'00", long 117°24 I 50", in NE^ seo. 6, T. 26 N., R. 43 E., on right 

bank 50 ft downstream from highway bridge at Dartford, 6 miles upstream from mouth, 

and 8 miles north of Spokane.

Drainage area. 665 sq mi.

Records available.--April 1929 to September 1932, December 1946 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,580 ft (from topographic map). Prior 

to Mar. 16, 1951, staff gage at same site and datum.

Average discharge.--12 years (1929-32, 1947-56), 324 cfs (234,600 acre-ft per year).

Extremes.--Maximum discharge during year, 1,720 cfs Mar. 26 (gage height, 4.83 ft); minimum, 140 cfs Nov. 13 (gage height, 1.56 ft).

1929-32, 1946-56: Maximum discharge, 2,240 cfs Mar. 18, 1950 (gage height, 

5.1 ft, from graph based on gage readings); minimum observed, 63 cfs July 24, 1930 

(gage height, 1.07 ft).

Revisions.--The maximum discharge for the water year 1951 has been revised to 

1,560 cfs Feb. 11, 1951 (gage height, 4.25 ft, from graph based on gage readings), 

superseding figure published in WSP 1216.

Remarks.--Records good except those for periods of shifting control, which are fair, and 

those for periods of ice effect, which are poor. Small diversions for irrigation and 

domestic use above station. No known regulation.

Revisions (water years ),--WSP 1216: Drainage area. WSP 1286: 1930, 1932(M), 

1947-49JMJ.

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

Day

1

2

3

4

5

6

7

8

9

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.

148

146

144

T44

150

153

148

144

168

245

236

*197

187

178

171

168

168

166

166

164

164

161

159

159

166

178

174

178

181 

207

211

5,327

172

0.259

0.30

10,570

Nov.

187

178

187

225

229

211

197

190

187

194

197

184

b!50

b!60

1)145

146

164

*171

178

190

190

190

184

187

222

338

310

269

243 

240

6,043

201

0.302

0.34

11,990

Dec.

243

240

232

225

211

214

222

207

m

222

236

342

350

240

247

295

266

251

251

284

326

586

*740 "6"6~8

524

502

622

604

532

446 

402

10,944

353

0.531

0.61

21,710

Jan.

418

418

422

672

800

704

699

663

604

578

550

542

550

555

537

550

645

596

560

537

528

546

668

663

555

*486

514

506

b450

b400

b350

17,266

557

0.838

0.97

34,250

Feb.

b550

b350

402

414

418

406

398

390

378

374

370

366

358

b500

b250

b240 35~6"

322

322

326

422

482

438

402

386

382

374

418

550

10,874

375

0.564

0.61

21,570

Mar.

546

604

740

609

514

462

474

450

434

422

378 382"

406

*382

398

430

510

591

704

865

900

1,080

*1,240

1,440

1,570

1,680

1,640

1,550

1,520

1,580

1,650

26,151

844

1.27

1.46

51,870

Apr.

1,550

1,446

1,380

1,340

1,330

1,300

1,290

1,300

1,230

1,210

1,230

1,270

1,300

1,330

1,370

1,400

1,400

»1,370

1,320

1,280

1,240

1,220

1,210

1,200

r,200

1,130

1,080

1,000

945

900

37,765

1,259

1.89

2.11

74,910

May

855 sTo"

766

740

753

704

663

632

622

618

618

586

564

537

*519

498

486

478

478

470

462

454

446

446

434

430

434

422

410

398

582

17,115

552

0.830

0.96

35,950

June

574

366

358

562

578

570

562

354

346

338

326

518

510

306

322

562

578

558

546

546

342

326

318

310

303

295

292

284

280

277

10,007

334

0.502

0.56

19,850

July

273

273

277

292

292

*303

239

280

273

258

254

240

240

243

243

232

229

222

218

214

214

211

204

200

190

190

187

181

181

*174 

T7I

7,261

234

0.552

0.41

14,400

Aug.

171

174

181

190

184

178

174

168

168

166

168

168

168

168

168

171

171

168

166

164

161

161

159

Tel

164

181

207

T9T

190

187 

181

5,383

174

0.262

0.30

10,680

Sept.

184

TIT

181

181

181

181

181

178

174

174

*174

174

174

168

168

166

159

159

161

159

159

159

159

159

157

159

*159

159

161

168

5,057

169

0.254

0.28

10,030

Calendar year 1955 : Max 1,220 Min 126 Mean 279 Cfsm 0.420 In. 5.70 Ac-ft 202,300

Water year 1955-56 : Max 1,680 Min 144 Mean 435 Cfsm 0.654 In. 8.91 Ac-ft 315,800

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice (no gage-height record Jan. 29 to Feb. 2).

Note. Shifting-control method used Dec. 22 to Jan. 5, Mar. 5 to Sept. 24.
SPOKANE RIVER BASIN 269

Long Lake at Long Lake, Wash.

Location.--Lat 47°50'15", long 117°50'20", in NWirSWir see. 13, T. 27 N., R. 39 E., at left 

end of spillway at Long Lake dam, 12 miles north of Reardan.

Drainage area. 5,920 sq ml, approximately.

Records available. October 1913 to September 1956. Prior to October 1950 monthly discharge only, published in WSP 1316.

Gage. Water-stage recorder and staff gage, with long distance Indicator In powerhouse. 

Datum of gage is at mean sea level (levels by Washington Water Power Co.).

Extremes. Maximum contents during year, 104,200 acre-ft Oct. 25 (elevation, 1,536.00 ft); 

minimum, 77,200 acre-ft May 6 (elevation, 1,530.50 ft).

1913-56: Maximum contents, 104,200 acre-ft on many days each year since 1950 

(elevation, 1,536.0 ft); minimum, 7,950 acre-ft Mar. 31, 1955 (elevation, 1,514.20 ft).

Remarks.--Reservoir is formed by concrete dam, completed in 1913 and raised in 1950. 

Capacity, 104,200 acre-ft between elevations 1,512 ft (lower limit of normal operation) and 1,536 ft (top of gates). Contents at elevation 1,512 ft by capacity table 

used prior to October 1915, 148,600 acre-ft. Records given herein represent usable 

contents. Water used for power. Diversions above station for irrigation of about 

25,000 acres in Idaho and Washington. Other regulation in Coeur d'Alene Lake and at 

powerplants along Spokane River.

Cooperation.--Lake elevations furnished by Washington Water Power Co.

Month-end elevation and contents, water year October 1955 to September 1956

Date

Water year 1955-56. .......

Elevation 

(feet)t

1 * 534 98

1 535 89

1 533 42

_

Contents 

(acre-feet)

98 250

91 4OO

_

Change In contents 

(acre-feet)

+2 800

+1.350

t Elevation at 12 p.m.
270 SPOKANE RIVER BASIN

Spokane River at Long Lake, Wash.

Location. Lat 47°50'15", long 117°50 I 25", in SW£ sec. 13, T. 27 N., R. 39 E., on left 

bank at Long Lake powerhouse, 1| miles upstream from Chamokane Creek and 12 miles 

north of Reardan.

Drainage area. 5,920 sq mi, approximately. 

Records available.--April 1939 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,299.00 ft above mean sea level, datura of 

1929.

Average discharge. 17 years, 7,980 cfs (5,777,000 acre-ft per year), adjusted for 

storage.

Extremes.--Maximum discharge during year, 45,100 cfs Apr. 25 (gage height, 75.90 ft); 

minimum not determined; minimum daily, 114 cfs Sept. 2 (determined from powerplant 

records).

1939-56: Maximum discharge recorded, 49,400 cfs May 24, 1948 (gage height, 78.66 

ft); minimum not determined, occurred sometime during periods of backwater; minimum 

daily, that of Sept. 2, 1956.

Remarks. Records good. Flow regulated above station by Coeur d'Alene Lake (see p. 254) 

and Long Lake (see preceding page), and by powerplants of Washington Water Power Co. 

Water diverted for irrigation above station and is equivalent to that shown for Spokane 

River at Spokane (see p. 261).

Revisions.--WSF 1216: 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

(t)

Oct.

,680

,200

,370

,050

,190

,360

,260

,300

,480

,350

,6cO

,610

,430

,410

,610

,300

,290

,490

,350

,330

,320

,050

,790

,380

,500

,610

,740

,760

,100

'l40

120,560

3,889

239,100

+300

Nov.

4 , 220

4,230

5,250

5,300

5,920

5,930

5,950

4,380

4,430

5,640

5,990

5,960

5,910

5,920

5,940

5,910

5,900

5,910

6,900

7,280

7,570

7,480

7,450

7,180

8,560

10,100

13,800

12,400

8,990

8,050

204,450

6,815

405,500

+1,100

Dec.

7,210

7,850

7,210

7,200

7,O7O

6,790

6,750

6,670

6,800

6,820

7,240

14,500

17,700

15,700

16,200

14,100

10,400

7,110

7,250

11,100

17,100

28,200

51,700

18,700

22,600

25,100

27,600

25,400

24,500

23,400

21,700

457,670

14,760

907,800

-4,300

Jan.

21,700

24,600

18,500

24,700

2O,8OO

19,200

19,800

17,900

17,900

14,800

15,400

13,100

8,740

11,100

11,600

10,100

11,500

11,000

10,400

9,710

8,470

9,560

10,800

9,820

7,410

9,860

9,630

7,120

7,640

6 , 960

7,410

407,230

13,140

807,700

+4 , 550

Feb.

7,000

7,010

7,230

7,320

7,100

7,710

6,890

6,870

6,640

6,310

6,330

6,340

6,300

6,300

6,280

6,270

6,280

6,300

6,330

6,290

6,280

6,320

6,280

6,210

6,120

6,130

6,090

6,060

6,090

188,680

6,506

374,200

-5,400

Mar.

6,100

7,670

11,000

8,500

7,100

6,370

6,290

6,310

6,310

6,320

6,290

6,140

6,080

6,080

6,090

6,090

6,110

7,760

9,840

9,960

10,600

14,400

13,400

13,900

15,000

22,200

22,700

18,500

17,200

16,300 

25,900

330,510

10,660

655,600

-4,550

Apr.

19,800

18,100

19,300

18,700

18,500

16,000

17,100

19,300

18,100

17,500

18,600

17,300

17,700

24,500

29,700

22,300

*27,000

28,600

30,800

32,100

34,200

35,700

35,600

35,200

38,700

39,600

40,100

39,600

41,200

34,700

805,600

26,850

*1,598

-5,100

Hay

*36,000

*35,200

34,300

32,500

31,700

34,100

23 , 600

26,800

27,800

29,600

32,100

30,200

35,600

28,800

31,700

29,700

29,000

*29,200

30,600

34,800

27,500

34,200

33,800

34,200

34,200

35,200

57.000

30,300

32,500

32,500

31,700

986,400

31,820

*1,956

+2,800

June

51.100

30,300

30,300

25,500

21,700

24,300

24,500

23,000

22,100

23,600

19,800

18,600

20,000

14,300

17,300

17,100

17,300

16,200

16,300

16,200

*12,100

*9,970

12,100

7,140

7,010

6,000

5,580

5,590

4,720

3,500

503,010

16,770

997,700

+6,800

July

379

3,830

3,850

3,620

3,930

4,690

4,610

2,220

4,300

4,120

3,810

4,140

4,080

3,820

3,160

3,850

3,860

4,080

3,910

3,550

3,480

2,410

3,210

2,530

2,180

2,990

2,850

3,210

1,910

2,630

2,380

103,589

3,342

205,500

+4,800

Aug.

2,410

2,760

2,930

2,700

2,390

2,690

2,190

2,890

2,500

2,370

2,270

2,300

2,400

2,400

2,400

2,510

2,140

2,310

1,750

2,350

2,260

2,510

2,380

2,400

372

2,930

5,820

2,350

2,380

2,910

3,410

76,382

2,464

151,500

-2,250

Sept.

5,190

1X4

562

2,300

1,180

3,020

1,630

2,170

501

2,370

2,460

2,600

3,060

3,060

3,130

2,050

2,600

2,950

2,790

2,880

2,760

3,140

1,150

3,050

2,910

2,970

2,970

3,160

2,910

1,610

71,247

2,375

141,300

+2,600

Adjusted for change in contents in Long Lake

Mean

Cfsm

Ac-ft

3,893

-

-

239,400

6,833

-

-

406,600

14,690

-

903,500

13,210

-

-

812,200

6,412

-

-

368,800

10,590

-

651,000

26,770

-

-

*1,593

31,860

-

tl,959

16,870

-

-

* 1,004

3,420

-

-

210,300

2,427

-

149,200

2,418

-

-

143,900

Calendar year 1955: Max 31,700 

Water year 1955-56: Max 41,200

Hin 144 Mean 7,917 Ac -ft 5,732,000 

Mln 114 Mean 11,630 Ac-ft 8,440,000

Adjusted

Calendar year 1955: Mean 7,937 

Water year 1955-56: Mean 11,630

Cfsm 1.34 In. 18.20 Ac-ft 5,746,000 

Cfsm 1.96 In. 26.73 Ac-ft 8,441,000

* Discharge measurement made on this day.

t Change in contents, in Long Lake, in acre-feet; furnished by Washington Water Power Co.

* Expressed in thousands.
COLUMBIA RIVER MAIN STEM 271

Feeder canal at Grand Coulee, Wash.

Location. --Lat 47°57'00", long 118°59'40", on line between sees. 1 and 2, T. 28 N. , R. 

30 E. , on left bank at Grand Coulee, a quarter of a mile downstream from intake, and 

half a mile southwest of Grand Coulee Dam.

Records available. October 1951 to September 1956 (pumping seasons only) .

Gage. --Water-stage recorder. Datum of gage is 1,550.0 ft above mean sea level, Bureau of 

Reclamation, adjustment of 1937. Supplementary water-stage recorder 3,100 ft downstream 

from base gage at same datum. Auxiliary water-stage recorder 1 mile downstream from 

base gage .

Extremes. --1951-56: Maximum daily discharge, 11,000 cfs July 11, 1954; no flow except 

during pimping seasons.

Remarks. --Records fair. Water is pumped (beginning May 1951) from Franklin D. Roo:sevelfc 

Lake behind Grand Coulee Dam, through a lift of about 280 ft into feeder canal for a 

distance of 2 miles into an equalizing reservoir. From equalizing reservoir it is 

distributed through a system of canals to the Columbia Basin project.

Cooperation. Discharge records for periods Oct. 11-13, 25, Oct. 29 to Nov. 4, Nov , 18

to Dec. 2, Dec. 4, 5, 23-29, Apr. 30 to May 24, July 10-12, Aug. 9 to Sept. 2, and stage 

record for auxiliary gage furnidned 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.

0

0

0

0

0

0

0

0

0

0

1,710

6,500

3,480

0

0

0

0

0

0

0

0 

0

0

0

101

0

0

0

2,770

6,500

3,330

24,391

787

48,380

Nov.

5,900

4,130

5,700

5,340

*6.840

6,690

6,530

5,750

6,220

5,240

4,190

3,870

1,350

0

0

0

0

101

4,590

6,400

2,02O 

1,920

2,420

4,390

6,150

6,200

6,400

2,520

1,660

655

113,176

3,773

224,500

Dec.

1,310

1,310

0

5,280

1,970

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

1,110

3,180

3,180

3,180

3,180

3,180

1,610

0

0

26,490

855

52,540

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

5

0

0

0

0

0

0

0

0

884

3,120

3,400

4,400

4,590-

4,540

4,380

3,890

2,970

2,880

2,97O 

2,900

1.O4O

0

0

0

0

0

0

151

42,115

1,404

83,530

May

1,510

1,660

1,610

1,710

4,390

4,340

1,820

1,870

1,760

1,460

1,510

4,180

4,240

1,410

3.O20

4,240

4,240

4,240

4,290

4,290

4,340 

4,390

4,440

4,490

5,040

5,860

5,800

4,290

4,650

5,950

5,950

113,620

3,665

225,400

June

5,880

*5,880

5,590

3,490

5,020

4,450

5,430

3,550

2,990

4,140

2,990

2,990

2,990

3,090

2,990

3,090

3,090

3,090

2,990

*3,090

2,900 

3,380

4,480

4,560

4,480

4,560

4,480

4,640

4,930

6^130

121,360

4,045

840,700

July

5,520

4,730

4,480

4,480

4,730

4,970

4,900

4,900

2,730

2.270

3,180

3,480

5,480

6,410

6,360

5.9OO

5,470

4,14O

3,570

5,050

6.570 

5,420

*4,060

4,340

4,250

2,320

3,850

6,020

5,960

3,240

3,250

142,030

4,582

281,700

Aug.

4,460

5,760

5,390

4,390

4,170

*2,900

2,990

2,740

5,440

3,880

6,550

4,790

3,430

4,030

3,180

3, 180

3,180

5,650

5,390

1.410

2,520 

3,230

2,370

3,180

6,200

3,430

3,530

3,180

3,180

3,180

3,830

120,540

3,888

239, 100

Sept.

4,790

3,230

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

o

0

0

0

8,020

267

15,910

Calendar year 1955: Max 10,100 Mln 0 Mean 2,280 Ac-ft 1,651,000

Water year 1955-56: Max S,84O Mln 0 Mean 1,945 Ac-ft 1,412,000

Discharge measurement made on this day.
272 COLUMBIA RIVER MAIN STEM

Franklin D. Roosevelt Lake at Grand Coulee Dam, Wash.

Location. Lat 47°57'20", long 118 0 59'10", In lot 3, sec. 1, T. 28 N., R. 30 E., In block 

12 of Grand Coulee Dam at Grand Coulee.

Drainage area.--74.100 sq mi, approximately.

Records available. April 1938 to September 1956. Prior to October 1943, published as 

Columbia River Reservoir at Grand Coulee Dam.

Gage. Water-stage recorder. Datum of gage Is at mean sea level, Bureau of Reclamation 

datum, or 1,425 ft above mean sea level, datum of 1929, supplementary adjustment of 

1947 (levels by Bureau of Reclamation). Prior to Apr. 24, 1942, staff gage at site 

2,000 ft upstream at same datum.

Extremes. Maximum contents during year, 9 573,300 acre-ft Aug. 27 (elevation, 1,290.14 

ft); minimum, 6,715,800 acre-ft May 16 (elevation, 1,250.81 ft).

1938-56: Maximum contents recorded, 9,586,200 acre-ft July 17, 1942, June 3, 1945 

956.1 (elevation, ft). 1,290.3 ft); minimum observed, 16,200 acre-ft Aug. -o.i, 29, 1938 (elevation. 

Remarks. Reservoir Is formed by concrete dam; construction of dam began In 1934; was 

completed in 1941; storage began early in construction period. Capacity, 5,071,700 

acre-ft between elevations 1,208 ft (proposed lower limit of operation) and 1,288 ft 

(top of gates) above mean sea level. Storage below 1,208 ft, 4,330,000 acre-ft. 

Figures given herein represent total contents. Water is used for power development 

and diversion by pumping for irrigation of Grand Coulee project of Bureau of Reclamation, began in May 1951.

Revisions (water years). WSP 1286: 1942, 1945(M) .

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

(Prepared by Geological Survey from data furnished by

Bureau of Reclamation)

1,250.0

1,260.0

1,270.0

1,280.0

1,290.0

6,663,200

7,327,500

8,030,700

8,775,400

9,562,000

Elevation, in 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

2O

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

87.55

87.49

87.27

86.99

86.91

87.04

86.90

87.01

87.22

87.73

88.02

88.01

87.97

87.96

88.01

88.00

87.91

87.88

87.86

87.91

87.70

87.60

87.56

87.28

86.96

87.35

87.95

88.46

88.71

88.78

88.62

9,4513

+72,700

Nov.

88.56

88 . 13

87.78

87.68

88.07

88.15

87.80

87.71

87.60

87.58

87.62

87.69

87.44

87.27

87.19

87.34

87.58

87.88

88. 06

87.96

87.96

88.06

87.91

87.97

87.94

87.98

88.09

87.88

87.93

87.90

9,393J

-57,600

Dec.

87.89

87.86

88.06

88.12

87.82

87.46

87.32

87.14

87.09

87.22

87.44

87.45

87.62

87.56

87.47

87.58

87.67

87.65

87.27

87.13

87.23

87.70

88.21

88.75

89.20

89.35

89.60

89.67

89.70

89.64

89.85

9,548.3

+154, 60C

Jan.

89.82

89.82

89.61

89.51

89.56

89.69

89.91

89.92

89.85

89.76

89.87

89.87

89.79

89.65

89.76

89.36

89.54

89.25

89.14

89.11

89.09

89.54

89.08

88.92

88.78

88.55

88.26

88.10

88.08

87.62

86.90

9,314.1

-254,200

Feb.

86.50

85.57

85.13

84.86

84.92

84.56

84.25

83.95

83.63

83.25

83.01

83.05

82.79

82.45

82.00

81.40

80.79

80.54

79.85

79.09

78.76

78.46

78.24

77.93

77.68

77.41

76.98

76.64

76.29

__ __ _

8,493.8

-820,300

Mar.

75.85

75.75

75.84

76.07

75.65

75.35

75.06

74.76

74.41

74.13

73.85

73.30

72.80

72.47

72.23

72.05

71.88

71.97

71.51

71.45

71.45

71.65

72.14

72.79

73.57

74.21

74.61

74.79

74.51

74.65

74.76

8,379.5

-114,500

Apr.

74.75

74.88

74.65

74.23

74.16

74.07

73.92

75.81

73.63

73.47

73.55

72.27

75.24

73.34

73.72

73.89

75.82

75.88

75.56

76.55

75.86

74.67

72.95

71.15

69.55

67.55

65.47

65.95

62.94

62.15

7,473.8

-905,700

May

61.31

60.78

60.12

59.32

58.30

57.26

56. Ol

54.85

53.90

53.01

52.39

51.83

51.64

51.55

51.05

50.85

51.01

51.60

52.69

54.39

56.59

59.47

62.60

65.26

67.64

70.31

72.74

75.13

77.05

78.40

79.55

8,724.1

tt+1,250

June

8O.46

81.79

82. 9O

85.90

84.58

84.91

85.00

84.87

84.71

84.61

85.00

85.66

86.29

86.85

87.39

87.74

88.09

88.59

88.85

89.30

89.76

89.75

89.96

89.96

89.91

89.94

89.89

89.97

89.89

89.95

9,556.4

+832,50C

July

89.92

89.89

89.92

89.93

89.89

89.90

89.93

89.95

89.95

89.97

89.98

90.01

89.88

89.93

90.06

89.94

89.95

89.98

89.98

89.86

89.94

89.88

89.91

89.92

89.89

89.90

89.87

89.91

89.90

89.90

89.90

9,554

-2,400

Aug.

89.89

89.89

89.90

89.88

89.90

89.94

89.92

89.86

89.88

89.90

89.82

89.90

89.82

89.87

90.05

89.86

89.92

89.95

90.07

90.02

30.00

90.00

89.98

89.90

89.68

90.09

89.98

89.89

89.89

89.96

89.90

9,554

0

Sept.

89.79

89.72

89.71

89.57

88.98

88.53

88.11

87.80

87.58

87.48

87.43

87.47

87.54

87.50

87.26

87.40

87.30

87. 3O

87.55

87.41

87.45

87.61

87.80

87.86

87.77

87.68

87.67

87.61

87.70

87.79

9,585

-169,000

Calendar year 1955................... t +465,200

Water year 1955-56................... t +6,400

t Contents, in thousands of acre-feet, at end of month.

t Change In contents in acre-feet.

tt Expressed in thousands.

Note.--Add 1,200 ft to obtain elevation above mean sea level (Bureau of Reclamation).
COLUMBIA RIVER MAIN STEM 273

Columbia River at Grand Coulee Dam, Wash.

Location. Lat 47°58'00", long 118°58'45", opposite lot 4, sec. 36, T. 29 N., R. 30 E., in 

pier 3 of highway bridge, 2,500 ft downstream from Grand Coulee Dam and 14 miles upstream from Nespelem River.

Drainage area. 74,100 sq mi, approximately.

Records available. April 1913 to June 1923 (monthly discharge only), July to December 

" ' "" " " ne 1928 to September 195'.

and as "at Grand Coulee"

1923V January 1924 to May 1928 (monthly discharge only), June 1928 to September 1956. 

Published s "at Grand Coulee, near Nespelem" prior to 1936 ar " » - - - ...

1936-42.

Gage. Water-stage recorder. Datum of gage is at mean sea level, Bureau of Reclamation 

adjustment of 1937. June 27 to Dec. 31, 1923, June 12, 1928-, to Mar. 31, 1931, staff 

gages at site half a mile upstream at datum 2.4 ft lower. Apr. 1, 1931, to Dec. 31, 

1935, water-stage recorder at site 850 ft downstream at present datum. Since June 12, 

1955, auxiliary water-stage recorder 6 miles downstream from base gage.

Average discharge. 43 years, 108,900 cfs (78,840,000 acre-ft per year), unadjusted.

Extremes. Maximum discharge during year, 522,000 cfs June 8 (elevation, 983.80 ft); minimum, 27,400 cfs Dec. 12 (elevation, 937.61 ft).

1913-56: Maximum discharge, 637,800 cfs June 12, 1948 (elevation, 987.90 ft); minimum daily, 15,300 cfs Feb. 1, 1937.

Maximum discharge known, 725,000 cfs (estimated) during flood in June 1894.

Remarks. Records excellent. Feeder canal diverts water by pumping from Franklin D. 

Roosevelt Lake for Columbia Basin project (see p. 271). Other diversions above 

station for irrigation are a small percentage of flow past gage. Flow regulated by 

Franklin D. Roosevelt Lake (see preceding page) and reservoirs in Kootenai, Pend 

Oreille, and Spokane River basins. Records of chemical analyses and water temperatures 

for the water year 1956 are given in WSP 1453.

Revisions (water years). WSP 1286: 1942, 1947.

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

Day

1 

2 

3 

4

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Total 

Mean 

Ac- ft

Oct.

67,600 

63,500 

72,700 

75,100 

69,000

*64,700 

64,800 

66,900 

57,800 

56,000

62,900 

67,200 

60,300 

* 55, 600 

55,000

54,800 

57 , 600 

57 , 200 

58,100 

*58,800

64,300 

63,800 

58,800 

62,600 

61,700

54 , 200 

*63,000 

58 , 500 

65,100 

64,400 

72,600

*1,928.6 

62,210 

£5,825

Nov.

70,500 

68,100 

67,900 

65 , 100 

*52,900

61,500 

85,700 

68,800 

67,700 

62,500

64,500 

68,400 

71,100 

68,800 

*69,100

69,700 

69,800 

66,000 

68,800 

67,300

69,000 

68,800 

68 , 000 

59,800 

* 58, 300

61,500 

60,400 

64,500 

64,400 

*61,000

£1,985.8 

66,190 

£5,959

Dec.

62,200 

62,600 

54,600 

58 , 000 

71,100

68,600 

65,800 

58 , 500 

53,400 

48 , 500

42,200 

57,600 

*61,300 

64,900 

65,900

57,600 

49,100 

49,700 

62,000 

60,600

*63,200 

62,200 

63,700 

55,100 

57,300

66,600 

75,500 

78,700 

*81,400 

79,100 

75,000

£1,932 

62,320 

£3,832

Jan.

71,300 

75,900 

76,500 

72,100 

68,200

67,400 

65,700 

75,100 

* 78, 200 

71,200

64,100 

66,000 

64,700 

65,200 

64,000

71,600 

62 , 100 

*60,500 

61,600 

59,100

56,400 

51,400 

64,100 

65,600 

61,500

67,700 

65,600 

55,700 

48 , 700 

65,900 

75,100

t2,030 

65,480 

*4,026

Feb.

72,100 

74,900 

70,500 

63 , 900 

53,500

69,600 

66,700 

69,500 

67,600 

69,500

59,700 

52,900

67 ',800 

74,100

75,100 

71,200 

64,500 

59,700 

67,600

62 , 300 

61 , 100 

62,500 

66,500 

60,900

59,900 

69,600 

65,800 

64,900

£1,908.5 

65,810 

£3,785

Mar.

65,500 

59,200 

55,400 

49,500 

66,600

64,600 

66,300 

59,500 

65,500 

62,200

56,700 

68,500 

65,800 

59,400 

55,500

54,900 

*52,600 

45,400 

65,100 

59,100

54,600 

55,500 

49,500 

51,300 

52,700

67,300 

100,900 

105,800 

121,100

110,200 

114,900

£2,068.9 

66,740 

£4,104

Apr.

113,100 

103,000 

116,300 

118,000 

111,300

106,000 

101,500

102,400 

102,400 

102,100

102 , 900 

103,000 

109,200 

114,600 

115,000

128,300 

151,700 

164,500 

117,300 

156,500

218,300 

287,100 

290,700 

517,300 

319,300

524,000

321,100 

508 , 900 

290,900 

275,600

£5,292.3 

176,400 

* 10, 500

May

246,100 

264,000 

258,300 

254,200 

252,400

251,100 

249,700 

249,800 

250,900 

249,000

249,100 

246,600 

240,700

245,400 

245,600

245,900 

245,100 

241,500 

244,200 

246,500

246,500 

249,200 

257,700 

* 29 6, 500 

325,600

332,800 

350,900 

359,900 

381,800 

411,100 

432,600

£8,614.5 

277,900 

£17,090

June

458 , 000 

444,100 

450,700 

457,200 

473,100

* 494, 300 

508 , 100

505,900 

495,400 

476,700

459,000 

449,000 

441,800 

426,300 

408,700

387,800 

572,100 

547,200 

548,800 

351,700

* 344,800 

351,500 

343,600 

351,100 

549,500

330,800 

308,000 

*295,600 

295,000 

280,600

------

H.1,982.2 

599,400 

*25,770

July

268,900

263,900

258,100 

253,100 

249,800

241,300 

234,600 

225,700 

228,500 

222,800

222,800 

223,800 

228,300 

223,800 

218,200

222,900 

217,900 

217,700 

216,400 

214,300

204,200 

20S , 000 

207,600 

203 , 300 

*200, 000

199,600 

196,000 

190,400 

186,500 

182,400 

175,700

£6,806.5 

219,600 

*13,500

Aug.

169,800

158,800 

155,800 

149,700 

145,000

141,500 

*140, 400 

135,000 

120,500 

115,300

114,700 

102,300 

109,700 

98,800 

98,400

102,300 

96,700 

96,700 

91,400 

100,200

100,400 

98 , 200 

97,400 

98,200 

97,100

82,700

98 ' 500 

98,300 

94,800 

95,900

£3,502.8, 

113,000 

*6,948

Sept.

86,100 

80,800 

79,500 

91 , 200 

89,100

88 , 900 

84,100 

76,800 

67,400 

68 , 500

63,700 

67 , 200 

66,500 

73,900 

68,000

64,100 

*70,600 

72,200 

69,800 

68,400

73,300 

63,600 

61,800 

64,600 

71,700

71,800 

68,200 

70,000 

65,200 

55 , 900

t2,160.9 

72,030 

£4,286

Calendar year 1955: Max 399,400 Mln 42,200 Mean 112,600 Ac-ft 81,520,000 

Water year 1955-56: Max 508,100 Mln 42,200 Mean 137,200 Ac-ft 99,600,000

* Discharge measurement made on this day. 

t Expressed In thousands.
274 COLUMBIA RIVER MAIN STEM

Rufus Woods Lake at Bridgeport, Wash.

Location. Lat 47°59'40", long 119 038'05", in SW£ sec. 24, T. 29 N., R. 25 E., on left bank 

in spillway access tower of Chief Joseph Dam, half a mile upstream from Foster Creek and 

lj miles southeast of Bridgeport.

Drainage area. 75,000 sq mi, approximately. 

Records available. November 1954 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level, datum of 1929, supplementary adjustment of 1947. Prior to June 28, 1955, staff gage at same site and datum.

Extremes. 1954-55: Maximum contents during period November to September, 517,800 acre-ft 

July 10 (elevation, 946.2 ft).

1955-56: Maximum contents during water year, 532,200 acre-ft June 27 (elevation, 

948.1 ft); minimum, 402,900 acre-ft Dec. 17 (elevation, 930.3 ft).

Remarks. Reservoir is formed by concrete gravity-type dam completed in June 1955; storage 

began in November 1954. Capacity, 287,600 acre-ft between elevations 901.5 ft (spillway 

crest and lower limit of operation) and 946.0 ft (normal maximum operating pool). Storage below 901.5 ft, 228,600 acre-ft. Records given herein represent total contents. 

Water used for power development.

Cooperation. Lake elevations furnished by Corps of Engineers.

Month-end elevation and contents, November 1954 to September 1956

Date

Peb . 28 .....................

Feb. 29....... ..............

Elevation 

(feet)t

836.3

912.5

937 4

933 4

_

937 3

935 2

Contents 

(acre-feet)

40,000

-

299,400

452,900

424,400

"

458,700

_

Change in contents 

(acre -feet)

+19,300

-7 , 100

+1,100

+16,800

-73,500

+10,100

-28,500

"

+250, 100

t Elevation at 12 p.m.
COLUMBIA RIVER MAIN STEM 275

Columbia River at Bridgeport, Wash.

Location. Lat 48°00'25", long 119°39'50", in SW£sw£ sec. 14, T. 29 N., R. 25 E., on left 

bank at Bridgeport 1 mile downstream from Foster Creek and If miles downstream from 

Chief Joseph Dam.

Drainage area. 75,000 sq mi, approximately. 

Records available. April 1952 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Corps of 

Engineers) .

Extremes . --Maximum discharge during year, 488,600 cfs June 7 (elevation, 792.20 ft); minimum not determined; minimum daily, 47,000 cfs Dec. 18.

1952-56: Maximum discharge, that of June 7, 1956; minimum daily, 31,000 cfs Jan. 11, 

1953.

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

good. Feeder canal diverts water by pumping from Franklin D. Roosevelt Lake for 

Columbia basin project (see p. 271). Other diversions above station for irrigation 

are small percentage of flow past gage. Flow regulated at Chief Joseph Dam and 

affected by storage in Franklin D. Roosevelt Lake (see p. 272) and reservoirs in 

Kootenai, Fend Oreille, and Spokane River basins.

Rating table, water year 1955-56 (elevation, in feet, and discharge,

in cubic feet per

57.0

58.0

60.0

65.0

70.0

46,000

51,500

63,000

99,000

145,500

scond)

75.0

80.0

85.0

92.1

208,000

282,000

363,000

486,800

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.

69,100 

68,000 

69,400 

75,700

66,200 

59,500 

61,700 

65,700 

63,500

63,900 

62,100 

63,800 

61,900 

56,600

53.400 

55,200 

57,200 

56,900 

56,400

61,200 

63,500 

63,500 

62,500 

62,200

60,300 

59,500 

63,500 

59,900 

60,600 

70,200

* 1,944 

62,710 

*3,856

Nov.

72,400 

70,900 

67,600 

*66,000 

60,500

59,300 

75,400 

72,600 

69,200 

62,000

57 , 600 

60,700 

73,700 

74,500 

68,800

68,500 

a71,000 

71,700 

69,500 

65,200

68 , 20O 

72,700 

72,300 

72,200 

64,300

60,200 

64,100 

64,300 

64,300 

63,000

*2,022.7 

67,420 

*4,012

Dec.

62,600 

66,900 

60,100 

54,400 

64,500

72,800 

73,400 

63,400 

55,100 

52,500

50,500 

*57,500 

63,500 

63,500 

67,600

68,400 

a 48, 000 

347,000 

63,300 

68,200

57,100 

58,300 

57,700 

53,200 

57,100

66,100 

73,300 

75,400 

79,600 

78,700 

74,100

*1,953.8 

63,030 

*3,875

Jan.

74,400 

78,000 

78 , 700 

77,900 

75,000

70,400 

68,500 

69,600 

75,500 

78,200

72,400 

66,900 

66,400 

66 , 300 

66,200

70,600 

69,800 

*64,800 

62,500 

61 , 200

61,600 

60,800 

68,200 

68,300 

64,200

66,400 

66,600 

60,400 

52,100 

58,700 

68,100

* 2,108. 7 

68,020 

*4,183

Feb.

76,600 

80,400 

74,500 

66,800 

59,400

62,800 

68 , 900 

68,700 

69,000

68,800

64,000 

62,000 

65,900 

*67,100 

66,800

72,300 

75,000 

70,900 

69,200 

69,300

66,300 

61,000 

60,800 

62,500 

62,500

62,500 

66,700 

70,400 

67,900

tl,959 

67,550 

*3,886

Mar.

66,600 

66,200 

60,400 

57,700 

61,600

66,100 

66,600 

60,700 

55,200 

67,900

68,000 

71,100 

*70,300 

64,000 

58 , 000

53,900 

56,400 

53,900 

54,400 

59,800

59,300 

57,500 

53,200 

51,400 

53,800

78,900 

94,200 

98 , 900 

116,000 

111,600 

104,400

*2,118 

68,320 

*4,201

Apr.

105,800 

107,300 

113,200 

117,700 

113,000

105,200 

102,000 

101,900 

102,000 

102,000

101,900 

102,400 

107,200 

112,800 

112,300

122,800 

147,300 

163,200 

91,800 

163,900

216, 10C 

263,600 

292,200 

308,600 

*307,600

535,500 

313,000 

311,100 

292,600 

275,400

*5,209.4 

173,600 

t 10, 550

May

271,200 

264,200 

259,000 

250,400 

249,800

250,800 

251,100 

250,800 

250,800 

255,400

251,100 

249,400 

242,400

245,200

251, OOC

258,000 

257,700 

258,400 

259,500 

252,200

255,800 

* 251, 200 

258,000 

286,500 

524,200

527,600 

345,900 

555,100 

568,100 

393,900 

418,800

*8,655.5 

279,200 

*17,170

June

425,600 

425,000 

432,100 

*441,100 

456,200

472,400 

485,500 

485,900 

483,600 

471,000

455,800 

434,600 

429,000 

416,700 

402,800

385,400 

364,900 

323,900 

553,100 

*366,600

343,800 

350,800 

341,500 

345,500 

339,000

315,400 

*317, 700 

324,900 

509,200 

294,500

*11,791,3 

393,000 

*23,390

July

275,500

265,500 

258,000 

260,700 

251,400

245,600 

259,000 

234,300 

227,700 

226,400

228,400 

224,700 

227,000 

228,000 

224,000

222,900 

222,000 

219,600 

219,200 

216,100

205,600

210,200 

207,400 

208,800 

*201,100

198,100 

206,500 

189,700 

188,300 

179,800 

179 , 000

*6,888.5 

222,200 

*13,660

Aug.

169,500

159,600 

149,100 

147,900 

139,900

145,400 

*U5,900 

132,400 

124,500 

110,000

114,900 

95,600 

111,000 

97,000 

106,700

103,800 

95,600 

99,200 

93,200 

99,800

99,900 

99,200 

96,100 

94,700

100,800

85,500 

95,400 

100,100 

99,600 

97,200 

91,600

*5,488.7 

112,500 

*6,920

Sept.

88,400 

84,200 

77,600 

84,500 

97,900

87,900 

84,800 

82,400 

71,600 

67,600

69,300 

66,600 

*64,100 

71,500 

74,800

65,500 

69,600 

78,200 

75,600 

69,300

68,700 

64,000 

67,400 

70,900 

72,000

73,500 

75,100 

71,100 

67,700

66,600

*2,226.2 

74,210 

*4,416

Calendar year 1955: Max 407,300 Min 46,100 Mean 113,000 Ac-ft 81,800,000 

Water year 1955-56: Max 485,900 Mln 47,000 Mean 137,600 Ac-ft 99,900,000

* Discharge measurement made on this day.

* Expressed in thousands.

a No gage-height record; discharge estimated on basis of records for stations at Grand Coulee 

and at Trinidad.
276 OKANOGAN RIVER BASIN

Okanagan River at Okanagan Falls, British Columbia 

(International gaging station)

Location. Lat 49°21', long 119°35', on right bank 0.1 mile downstream from dam at outlet 

of Skaha Lake at Okanagan Palls, B. C.

Drainage area.--2,650 sq mi, approximately.

Records available.--January 1915 to September 1956. Monthly discharge only for some 

periods, published in WSP 1316.

Gage.--Water-stage recorder. Datum of gage is 1,092.82 ft above mean sea level (Geodetic 

Survey of Canada, 1947 Joint adjustment). Prior to Oct. 2, 1933, staff gages at sites 

about 600 and 700 ft upstream at different daturas. Oct. 2, 1933, to Apr. 13, 1936, 

staff gage and Apr. 14, 1936, to Nov. 12, 1954, water-stage recorder, at site 200 ft 

upstream at same datum.

Average discharge.--41 years, 518 cfs (375,000 acre-ft per year).

Extremes.--Maximum discharge during year, 1,540 cfs July 15 (gage height, 2.07 ft); minimum, 276 cfs Dec. 19-24, 26 (gage height, 0.47 ft).

1915-56: Maximum discharge observed, 2,680 cfs June 10, 1928; minimum observed, 

4.6 cfs Mar. 14, 1931.

Remarks.--Diversions above station for irrigation of approximately 38,000 acres. Plow 

regulated by control dams at outlets of Okanagan and Skaha Lakes.

Cooperation.--This station is maintained by Canada under agreement with the United States. 

Revisions. WSP 1152: Drainage area.

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

discharge, in cubic feet per second)

Oct. 1 to July 15 July 16 to Sept. 3O

0.4 

1.0

1.5 

2.1

240

589

952

1,580

0.8

1.2 

1.6 

2.1

434

718

1,040

1,580

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

634

551

551

519

494

*494

427

387

387

387

393

393

342

3^5

348

491

494

494

494

494

494

487

487

481

481

487

487

487

481

481

481

14,476

467

28,710

Nov.

481

404

348

314

287

287

287

287

287

287

287

282

^8?

282

282

282

282

282

282

282

282

282

282

282

282

282

282

282

282

282

8,914

297

17,680

Dec.

282

28?

282

282

282

282

*282

282

282

282

282

*282

282

282

282

282

282

282

276

276

276

276

276

276

282

276

282

282

282

282

282

8,700

281

17,260

Jan.

282

282

282

282

282

282

287

287

287

287

292

410

525

570

570

*563

563

563

595

621

627

621

615

615

615

615

595

576

583

583

583

14,740

475

29,240

Feb.

576

576

576

576

576

576

576

576

576

576

*576

576

576

583

576

576

576

583

583

570

570

570

570

570

570

570

570

570

570

16,665

575

33,050

Mar.

57£

60?

640

640

674

701

694

694

688

688

688

688

688

681

681

681

674

674

674

674

667

667

667

667

667

667

667

701

759

759

759

21,041

679

41,730

Apr.

759

752

752

752

752

744

744

744

744

744

744

744

744

744

744

744

744

774

796

811

*849

896

896

896

888

896

896

896

*978

1.090

24,257

809

48,110

May

1,090

1,100

1,090

1,090

1,090

1,090

1,090

1,O9O

1,090

1,120

1,180

1,180

1,170

1,170

1,160

1,170

1,100

1,020

987

*1,000

1,020

1,040

1,050

1,060

1,200

*1,260

1,250

1,240

1,190

1,250

1,310

34,947

1,130

69,320

June

*1,320

1,310

1,300

1,310

1,300

1,310

1,300

1,290

1,290

1,290

*1,290

1,290

1,290

1,290

1,290

1,290

1,290

1,300

1,310

1,320

1,320

1,330

1,540

1,340

1,340

1,340

1,340

1,340

1,340

1,340

39,350

1,310

78,050

July

1,340

1,340

1,340

1,410

1,460

1,450

1,450

1,460

1,460

1,460

1,510

1,520

1,520

1,530

1,540

1,530

1,530

1,530

1,520

1,520

1,400

1,270

1,120

1,020

970

944

952

920

857

834

63.0

40,517

1,310

8O.36O

Aug.

795

795

795

803

810

810

810

818

772

741

703

680

650

621

621

621

621

621

628

643

650

666

658

658

658

658

658

658

658

628

549

21,457

692

42,560

Sept.

549

549

549

542

542

542

542

542

*535

535

535

507

467

467

474

474

467

467

467

474

474

474

474

474

474

480

480

480

480

480

14,996

500

29,740

Calendar year 1955 : Max 1,030 Mln 276 Mean 653 Ac-ft 473, 1OO

Water year 1955-56 : Max 1,540 Mln 276 Mean 711 Ac-ft 515,800

Discharge measurement made on this day.
OKANOGAN RIVER BASIN 377

Osoyoos Lake near Oroville, Wash. 

(International gaging station)

Location. Lat 48°59'15", long 119°27'15", In lot 1, sec. 8, T. 40 N., R. 27 E., on west 

shore 1 mile south of international boundary and 3 miles north of Oroville.

Drainage area . 3,150 sq mi, approximately. 

Records available.--July 1928 to September 1956.

Gap;e. Water-stage recorder. Datum of gage is at mean sea level, U. S. Coast and Geodetic 

Survey datum of 1929. Prior to Sept. 2, 1928, staff gage and Sept. 2, 1928, to Nov. 9, 

1929, water-stage recorder, 100 ft south of international boundary. Nov. 10, 1929, to 

Apr. 11, 1956, staff gage or water-stage recorder at present site. All elevations 

prior to Oct. 1, 1944, at datum 2.39 ft lower. To convert from present datum to Geodetic Survey of Canada 1934 datum, subtract 1.63 ft; to convert from present datum to 

1947 joint adjustment of U. S. Coast and Geodetic Survey and Geodetic Survey of Canada, 

subtract 0.26 ft.

Extremes. Maximum elevation during year, 914.46 ft May 26, 27; minimum observed, 910.95

1928-56: Maximum elevation, 916.74 ft May 31, 1948; minimum, 908.82 ft (present 

datum) Oct. 14, 1929.

Flood of May 29, 1894, reached an elevation of 918.8 ft +0.5 ft (present datum), 

1 mile below present lake outlet, from floodmark on old Okanogan Hotel building, 

pointed out in 1930 by Mr. and Mrs. S tans bury, who kept a diary and operated the hotel 

in 1894.

Remarks .--Approximately 44,000 acres are irrigated above station in Canada. Elevation may 

occasionally be affected by dam at Zosel's mill in Oroville.

Cooperation.--This station is one of the international gaging stations maintained by the 

United States under agreement with Canada.

Revisions.--WSP 1346: Drainage area.

Elevation, In feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

11.98

11.92

11.89

11.78

11.67

11.62

11.56

11.54

11.50

11.49

11.47

11.45

11.41

11.38

11.35

11.33

11.30

11.28

11.25

11.27

11.30

11.33

11.34

11.35

11.35

11.39

11.42

11.42

11.47

11.49

11.52

Nov.

11.55

11.53

11.53

11.51

11.49

11.47

11.47

11.42

11.39

11.38

11.38

11.33

11.25

11.21

11.12

11.04

10.99

10.95

10.99

11.01

11.04

11.06

11.09

11.11

11.13

11.17

11.22

11.23

11.23

11.21

Dec.

11.15

11.11

11.04

11.04

11.05

11.08

11.09

11.10

11.11

11.12

11.15

11.17

11.11

11.08

11.07

11.06

11.04

11.02

11.02

11.03

11.03

11.06

11.09

11.11

11.12

11.18

11.21

11.21

11.19

11.17

11.17

Jan.

11.16

11.16

11.16

11.16

11.16

11.22

11.26

11.28

11.28

11.29

11.29

11.30

11.31

11.32

11.35

11.40

11.47

11.51

11.53

11.55

11.55

11.56

11.57

11.59

11.61

11.63

11.64

11.64

11.63

11.61

11.59

Feb.

11.58

11.55

11.49

11.47

11.44

11.44

11.42

11.42

11.43

11.47

11.56

11.64

11.73

11.79

11.82

11.75

11.75

11.76

11.79

11.83

11.96

12.01

12.05

12.07

12.11

12.12

12.12

12.12

12.12

 

Mar.

12.12

12.13

12.15

12.19

12.20

12.17

12.15

12.06

12.01

11.97

11.89

11.85

11.83

11.53

11.53

11.51

11.50

11.49

11.48

11.45

11.43

11.43

11.43

11.45

11.48

11.46

11.45

11.44

11.44

11.45

11.35

Apr.

11.31

TT733

11.41

11.45

11.48

11.48

11.47

11.47

11.45

11.45

11.42

11.43

11.43

11.45

11.46

11.46

11.46

11.47

11.50

11.55

11.61

11.71

11.82

11.92

12.03

12.10

12.17

12.20

12.23

12.23

May

12.22

12.22

12.23

12.23

12.23

12.24

12.26

12.31

12.31

12.36

12.46

12.55

12.57

12.57

12.53

12.49

12.50

12.61

12.82

13.22

13.66

14.03

14.21

14.30

14.35

14.44

H7I4-

14.38

14.24

14.04

13.89

June

13.83

13.84

13.84

13.82

13.80

13.73

13.58

13.39

13.21

13.11

13.08

13.04

12.98

12.89

12.85

12.81

12.77

12.73

12.71

12.69

12.67

12.67

12.67

12.62

12.58

12.55

12.53

12.51

12.47

12.44

 

July

12.42

12.41

12.43

12.45

12.51

12.58

12.64

12.70

12.75

12.78

12.79

12.79

12.81

12.86

12.88

12.93

12.95

12.97

12.95

12.93

12.90

12.88

12.85

12.80

12.69

12.57

12.47

12.33

12.22

12.12

12.00

Aug.

11.90

11.83

11.75

11.70

11.67

11.64

11.61

11.60

11.61

11.59

11.58

11.56

11.54

11.52

11.48

11.48

11.46

11.44

11.42

11.38

11.36

11.37

11.37

11.36

11.36

11.35

11.35

11.34

11.35

11.34

11.32

Sept.

11.35

11.34

11.33

11.33

11.32

11.33

11.35

11.35

11.37

11.39

11.41

11.42

11.43

11.44

11.43

11.43

11.43

11.42

11.42

11.42

11.42

11.40

11.40

11.40

11.40

11.41

11.41

11.41

11.43

11.45

Note. Add 900.00 ft to obtain elevation above mean sea level. Staff-gage readings made once 

dally, usually between 7 and 10 a.m., Oct. 1 to Apr. 11.
278 OKANOGAN RIVER BASIN

Okanogan River at Oroville, Wash.

Location. Lat 48°55 I 55", long 119°25'05", in SW£ sec. 27, T. 40 N., R. 27 E., on left 

bank in Oroville 20 ft downstream from Great Northern Railway trestle, half a mile 

downstream from Tonasket Creek, and lj miles downstream from Osoyoos Lake.

Drainage area. 3,210 sq mi. approximately. 

Records available. October 1942 to September 1956.

Gage. Water-stage recorder. Datum of gage is 899.77 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Oct. 26, 1944, staff gage at Zosel's 

milldam 200 ft upstream at same datum. Oct. 26, 1944, to Mar. 6, 1948, water-stage 

recorder on railroad trestle 20 ft upstream at same datum. Auxiliary water-stage 

recorder half a mile downstream used during high-water periods since Apr. 10, 1948. 

May 15, 1946, to Apr. 9, 1948, auxiliary staff gage at same site and datum.

Average discharge. 14 years, 743 cfs (537,900 acre-ft per year).

Extremes. Maximum discharge during year, 2,480 cfs May 29; maximum gage height, 13.94 ft 

May 85 (backwater from Similkameen River); minimum discharge, 28 cfs Nov. 27 (gage 

height, 5.38 ft); minimum daily discharge, 150 cfs Nov. 27.

1942-56: Maximum discharge recorded, 3,430 cfs June 2, 1948 (gage height 15.28 ft); 

maximum gage height, 16.50 ft May 31, 1948 (backwater from Similkameen River); maximum 

daily reverse flow, 2,270 cfs May 29, 1948; minimum gage height, 3.98 ft Mar. 1, 1948.

Remarks. Records good except those for period -of backwater from Similkameen River, which 

are fair, and those for period of no gage-height record, which are poor. Diversions 

made to irrigate approximately 44,000 acres in Canada and minor diversions in the 

United States above station. Natural regulation in several large lakes and artificial 

regulation in Okanagan Lake as an aid to navigation in that lake; also variations in 

pondage back of Zosel's milldam at Oroville, 200 ft above gage.

Rating table, water year 1955-56, except periods of backwater from Similkameen 

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

6.0 

6.3 

6.6

150

273

455

7.0 

8.1

770

1,700

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

Day

1 

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

898 

882

866

818

674

594 

586

578

570

570

500

478

462

448

441

441

428

428

381

381

381

394

401

428

448

462

455

462

470 

485

485

16,295

526

32,320

Nov.

500 

*485

478

515

578

546 

530

508

455

462

508

500

441

287

414

387

381

254

259

259

264

273

278

278

284

316

150

311

470 

a460

11,831

394

23,470

Dec.

a450 

a400

a360

a330

a310

a310 

a320

a320

a320

a320

*327

327

387

381

327

322

327

322

322

311

311

316

322

327

333

345

351

351

357 

357

351

10,514

339

20,850

Jan.

345 

35l

351

351

357

363 

369

375

375

381

381

387

387

387

*394

4O7

546

650

658

674

682

682

674

658

658

666

674

666

666 

666

658

15,839

511

31,420

Feb.

642 

642

610

602

610

586 

578

522

485

448

470

485

508

530

522

500

500

*508

515

546

570

586

594

610

626

650

650

650

650

16,395

565

32,520

Mar.

650 

658

666

674

714

818 

898

874

858

850

842

834

842

*850

842

834

834

826

818

810

810

810

818

818

818

818

762

746

818 

826

24,814

8OO

49,220

Apr.

738 

746

8O2

834

858

890 

906

906

906

914

898

898

906

906

922

914

906

914

938

1,010

1,070

1,150

1,170

1,150

1,370

1,460

1,520

* 1,560

1,580 

1.610

31,352

1,045

62,190

May

1,640 

1,670

1,660

1,650

1,640

1,660 

1,680

1,690

1,600

1,540

1,580

1,700

1,710

1,740

1,790

1,710

1,750

1,510

1,250

692

5OO

i,Tfo

1,620

1,720

*1,450

*1,650

*2,020

2,260

2,360 

2,260

2,06O

50,932

1,643

101,000

June

1,780 

1,620

1,970

2,100

2,160

2,580 

*2,300

2,220

2,080

2,000

1,910

1,970

1,910

1,840

1,720

1,690

1,660

1,620

1,600

1,580

1,620

1,570

1,590

1,570

1,530

1,530

1,500

1,450

1,460

1.420

53,350

1,778

105,800

July

1,440 

1,430

1,430

1,440

1,480

1,530 

1,570

1,630

1,660

1,660

1,660

1,630

1,590

1,560

1,590

1,660

1,660

1,660

*1,680

1,700

1,670

1,650

1,630

1,580

1,500

1,380

1,340

1,300

1,230 

1,150

l.OSO

47,170

1,522

93,560

Aug.

*1.030 

954

914

898

890

842 

826

754

738

730

730

714

714

714

698

690

682

682

674

610

602

610

602

594

586

570

578

578

586 

578

455

21,823

704

43,290

Sept.

448 

448

448

441

435

441 

441

448

*448

455

455

455

448

455

455

455

448

448

448

462

462

455

i62

462

470

470

470

470

462 

478

13,643

455

27,060

Calendar year 1955: Max 2,280 Mln -54O Mean 726 Ao-ft 525,600

Water year 1955-56: Max 2,380 Mln 150 Mean 858 Ao-ft 622,700

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby stations.

Note.--Backwater from Similkameen River Apr. 23 to May 2, May 8 to July 8.
OKANOGAN RIVER BASIN 279

Palmer Lake near Nlghthawk, Wash.

Location. Lat 48°54'30", long 119°36'50", in SW£-NE£ sec. 6, T. 39 N., R. 26 E., on northeast shore, 2 miles east or outlet and 4 miles south of Nighthawk.

Drainage area. 293 sq mi.

Records available. April to September 1956.

Gage. Staff gage. Datum of gage is 1,100 ft above mean sea level, datum of 1929, supplementary adjustment of 1947.

Extremes. Maximum elevation observed during period, 1,159.47 ft May 22; minimum observed, 

1,144.68 ft Sept. 12.

Remarks. Lake affords natural pondage for high.stages of Similkameen River. No known 

regulation. Diversions for irrigation of about 1,000 acres above station. Whitestone 

Irrigation District diverts water from Toats Coulee Creek for irrigation of about 

2,000 acres in Whitestone Creek basin.

Elevation, in feet, 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

Oct.

Note. Add

8 a.m.

Nov. Dec. Jan. Feb. Mar.

1,100 ft to obtain elevation above mean

Apr.

.

-

-

-

-

.

-

-

_

-

_

_

45.10

45.10

45.10

45.16

45.30

45.46

45.64

45.88

46.25

46.92

47.83

49.04

49.93

50.73

51.33

51.77

51.91 

51 91

May

51.82

51.64

51.49

51.27

51.08

50.90

50.86

51.05

51.55

52.35

53.35

54.06

54.16

54.00

53.78

53.76

54.32

55.48

57.06

58.46

59.26

59.47

59.12

59.10

59.30

59.28

59.10

58.65

58.16 

57.80

57 .86

June

57.99

58.53

58.24

57.84

57 .80

57.38

56.62

55.94

55.29

54.92

55.24

55.35

54.92

54.56

54.36

54.24

54.10

53.87

53.60

53.95

54.40

54.16

53.86

53.58

53.24

52.80

52.38

52.14

52.03

51.79

July

51.44

51.23

51.07

50.95

50.86

50.80

50.74

50.53

50.45

50.27

50.09

49.94

49.75

49.60

49.38

49.18

48.96

48.68

48.46

48.24

48.02

47.83

47 .64

47.42

47 .24

47.03

46.95

46.68

46.50 

46.37

46.22

Aug.

46.07

45.96

45.86

45.77

45.69

45.61

45.55

45.49

45.42

45.36

45.30

45.26

45.21

45.17

45.12

45.12

45.10

45.05

45.03

45.01

44.99

44.97

44.95

44.90

44.88

44.90

44.94

44.94

44.90 

44.88

44.86

Sept.

44.86

44.83

44.81

44.80

44.78

44.76

44.75

44.74

44.72

44.70

44.69

44.68

44.69

44.70

44.70

44.70

44.70

44.70

44.71

44.72

44.72

44.71

44.70

44.70

44.70

44.72

44.72

44.72

44.74 

44.74

sea level. Gage read once daily at about

467Z40 O -58 -19
280 OKMOGAN RIVER BASIN

Similkameen River near Nighthawk, Wash. 

(International gaging station)

Location. La t 48°59'10", long 119°37'00", in NWi sec. 7, T. 40 N., R. 26 E., on left bank 

three-quarters of a mile upstream from Oroville-Tonasket Irrigation District canal intake, about if miles downstream from and northeast of Nighthawk, and 12 miles upstream 

from mouth.

Drainage area.--3,550 sq mi, -approximately.

Records available.--May 1911 to September 1956 (prior to September 1928, mean monthly discharge included Oroville-Tonasket Irrigation District canal). Published as "near Oroville" 1911-28.

Gage.--Water-stage recorder. Datum of gage is 1,137.70 ft above mean sea level, international joint adjustment of 1947. Prior to Sept. 11, 1928, staff gages at sites 

7 miles downstream (below Oroville-Tonasket Irrigation District canal) at various 

daturns.

Average discharge.--45 years, 2,250 cfs (1,629,000 acre-ft per year).

Extremes.--Maximum discharge during year, 24,500 cfs May 22 (gage height, 14.19 ft); minimum observed. 285 cfs Feb. 16 (result of discharge measurement).

1928-56: Maximum discharge, 38,700 cfs May 30, 1948 (gage height, 17.62 ft); minimum, 120 cfs Jan. 6, 1930 (gage height, 2.05 ft).

Remarks.--Records good except those for period of doubtful gage-height record, which are 

Fair, and those for periods of ice effect, which are poor. Flow at high stages regulated by natural diversion Into and release from Palmer Lake. Several small diversions 

above station for irrigation of about 2,900 acres in the United States in 1946 and approximately 1,600 acres in Canada.

Cooperation.--This station is one of the international gaging stations maintained by the 

United States under agreement with Canada.

Revisions. WSP 1182: Drainage area.

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

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

2.8 

3.4 

4.0 

5.0 

6.0

300

585

970

1,880

3,080

11.0

13.0

15.0

4,600

6,570

13,700

20,200

27,700

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

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

590

568

563

558

558

568

602

596

590

652

706

706

676

676

718

844

949

914

921

921

914

872

809

767

767

5.770

3,650

2,670

2,340

2,160 

2,020

36,615

1,181

72,620

Nov.

*1,850

1,690

1,5?0

4,380

6,250

4,250

3,500

i 3,140

2,920

3,020

3,740

2,780

1,920

1,580

1,490

1,490

1,360

1,380

1,420

1,670

1,680

1,620

1,570

1,580

1,570

1,540

1,650

1,320

1.250

1,240

66,350

2,212

131,600

Dec.

1,280

1,280

1,250

1,200

3,120

1,060

1,040

1,080

1,070

1,040

*1,040

1,070

978

900

850

800

750

750

800

800

900

900

900

1,000

1,000

1,100

1,200

1.380

1,190

1,000 

858

31,586

1,019

62,650

Jan.

886

949

1,040

1,140

1,180

1 . 200

1,060

986

921

872

837

844

865

858

*809

781

788

788

774

760

767

767

760

748

694

580

520

470

430

400

24,874

802

49,340

Feb.

400

400

400

450

500

540

580

600

600

602

612

612

612

550

500

*300

*400

450

530

580

634

640

607

602

585

590

590

590

596

------

15,652

540

31,050

Mar.

596

602

652

624

596

580

580

568

574

574

536

536

546

*558

574

580

596

607

602

607

607

618

624

629

624

629

629

607

618

624

629

18,526

598

36,750

Apr.

640

640

652

646

646

652

634

624

640

646

682

748

823

970

1,270

1,710

1,970

2,000

2,180

2,680

3,650

5,210

7,000

7.480

7,230

7,160

7,290

*7,190

6,890

6,530

87,083

2,903

172,700

May

6,210

5,920

5,560

5,300

5,190

5,260

5,650

6,470

8,090

9,950

11,000

10,400

9,540

8,850

*8,850

10,000

12,500

15 , 500

18,800

22,200

*23,900

24.000

22,600

22,700

*23,800

23,100

22,100

19 , 800

18,500

17,800

18,200

427,740

13,800

848,400

June

19,600

20 , 800

18, 500

17,500

17,100

14,400

«d!2,100

dlO,800

310,300

dll,500

d!2,700

dl 1,400

d9,990

9,540

9,920

9,950

9,560

8,960

9,190

11,700

10,300

9,260

8,820

8,260

7,580

6,960

6,850

7,270

6,960

6,490

334,260

11,140

663,000

July

5.920

5,780

5,860

5,880

5,630

5,820

5,650

5,190

5,030

4,990

4,890

4,740

4,550

4,300

4,080

3,780

3,440

*3,160

3,000

2,860

2,810

2,670

2,500

2,310

2,130

2,020

1,900

1,750

1,650

1,550 

T i. « A^n <tDU

117,290

3,784

232,600

Aug.

1,380

 1,340

1,490

1.500

1,410

1,320

1,230

1,170

1,120

1,070

1,030

994

956

921

900

986

1,160

1,110

986

914

865

823

795

Hi

809

921

1,060

1,030

935

900

32,785

1,058

65,030

Sept.

851

788

760

736

718

694

676

658

634

*618

607

640

688

658

640

618

590

580

568

546

Ml

541

558

580

585

682

688

858

865

795

19,961

665

39,590

Calendar year 1955 : Max 28,000 Min 426 Mean 2,800 Ac-ft 2,027,000

Water year 1955-56 : Max 24,000 Min 300 Mean 3,313 Ac-ft 2,405,000

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed from reconstructed gage-height graph based 

ecorded graph. 

Mote. Stage-discharge relation affected by ice Dec. 14-27, Jan. 27 to Feb. 9, Feb. 14-18.
OKANOGAN RIVER BASIN 281

Okanogan River near Tonasket, Wash. 

(International gaging station)

Location.- -La t 48°38'00", long 119°27'50", in lot 3, sec. 8, T. 36 N., R. 27 E., on right 

bank 1,000 ft upstream from Chewiliken Creek and 5? miles south of Tonasket.

Drainage area. --7. 2 70 sq mi, approximately. 

Records available. April 1929 to September 1956.

Gage. --Water- stage recorder. Datum of gage is 860.78 ft above mean sea level, datum of 

T929, supplementary adjustment of 1947.

Average discharge. 27 years, 2,937 cfs (2,126,000 acre-ft per year).

Extremes . --Maximum discharge during year, 25,000 cfs May 26 (gage height, 17.37 ft); minimum daily, 850 cfs Feb. 17.

1929-56: Maximum discharge, 40,900 cfs May 31, 1948 (gage height, 21.79 ft, from 

floodmark); minimum recorded, 126 cfs Sept. 5, 1931 (gage height, 3.43 ft).

Remarks. --Records excellent except those for periods of ice effect or no gage-height

record, which are poor. Diversions above station for irrigation of about 10,700 acres 

in the United States and 45,580 acres in Canada. Flow affected by regulation of 

Okanagan Lake and Skaha Lake, and by natural storage in other lakes. Some diurnal 

fluctuation at low flow caused by powerplant on Similkameen River.

Cooperation. --This station is one of the international gaging stations maintained by the 

United States under agreement with Canada.

Revisions (water years). --WSP 862: 1937. WSP 1216: Drainage area. WSP 1316: 1934(M), 

1938(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 25 May 26 to Sept. 30

5.0 790

6.0 1,460

7.0 2,430

9.0 5,240

12.0 11,000

15.0 18,200

18.0 27,200

4.8 960

5.0 1,090

6.0 1,870

8.0 3,970

11.0 8,990

14.0 15,900

18.0 27,000

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.

,560 

,520

,500

,450

* ,380

,250

,240

,250

,260

,250

,310

,290

,280 

.220

,240

,320

,520

,560

,540

,490

,490

,480

,410

,360

,360

,000

,540

,670

,110

,860

2,720

55,230

1,782

109,500

Nov.

2,610 

2,460

*2,300

2,740

6,590

5,640

4,400

3,900

3,560

3,440

3,940

3,710

2,700 

2,000

1,900

,850

,800

,800

,800

,900

,000

,950

,900

,900

,900

,900

,800

,800

.700

1,700

79,590

2,653

157,900

Dec.

1.750 

1,750

1,700

,600

,500

,400

,350

,350

,400

,400

,400

,450

1,470 

1,190

1,100

1,020

962

885

880

926

,070

,160

,290

,350

,430

,560

,690

,750

,660

1,510

1 350

42,303

1,365

83,910

Jan.

,220 

,240

,320

,430

,550

,660

,810

,790

,700

,590

,540

,500

,480 

,470

,450

* ,420

,410

,590

,570

,520

,520

,530

,530

,500

,450

,350

,250

,200

,150

.100

1,100

44,940

1,450

89,140

Feb.

,050 

,050

,050

,020

,050

,100

,100

,150

,150

,100

,100

,100

,100 

,100

,050

*900

850

900

,050

,100

,200

,200

,250

,250

.300

,300

,300

,300

,300

32,470

1,120

64, 400

Mar.

1.500 

1,330

1,390

1,410

1,390

1,400

1,500

1,650

1,640

1,650

1,580

1,520

1,500 

1,500

*1,540

1,570

1,530

1,540

1,550

1,530

1,560

1,570

1.6BO

1,680

1,680

1,680

1,620

1,500

1,560

1,610

1,620

47,760

1,541

94,730

Apr.

1,540 

1,530

1,550

1,610

1,640

1,660

1,680

1,670

1,750

1,860

1,940

1,650

1,450 

1,550

1,750

2,090

2,480

2,620

2,670

2,990

3,750

5,030

6,660

7,470

a7,450

a7 , 400

a7 , 700

a7,700

*8.060

7,740

106,580

3,555

211,400

May

7,360 

7,040

6,650

6,340

6,200

6,160

6,500

6,610

8,210

9,600

10,400

11,000

11,100 

10,400

9,950

*10,400

11,900

15,900

15,800

19,600

*22,800

24,500

24,600

24,200

24,600

24,900

*24,400

25,000

21,000

19,900

19, 800

448,400

14,460

889,400

June

20,200 

21,500

21,500

20,000

19,600

*18,400

16, 200

14,100

12,600

12,800

14,100

14,400

12,800 

11,600

11,500

11,700

11,400

10,700

10,300

11,900

12,800

11,200

10,500

9,890

9,140

8,270

7,820

7,970

8,150

7.650

590,470

15,020

774,500

July

7,080 

6,650

6,680

6,810

6,650

6,700

6,750

6,440

6,120

6,070

5,970

5,760

5,700 

5,540

5,280

5,090

*4,810

4,560

4,550

4,200

4,090

4,000

5,840

5,660

5,470

5,260

5,090

2,960

2,810

2,660

2.510

153,540

4,953

304,500

Aug.

2.590 

2,250

*2,210

2,530

2,240

2,140

2,020

1,940

1,790

1,750

1,690

1,640

1,610 

1,480

1,530

1,560

1,640

1,760

1,660

1,560

1,430

1,560

1,520

1,280

1,270

1,540

1,450

1,560

1,500

1,420

1,580

52,480

1,695

104,100

Sept.

1,280 

1,240

1,190

1,150

1,120

1,110

1,100

1,080

1,060

1,060

*1,040

1,040

1,080 

1,110

1,080

1,060

1,040

1,010

992

986

999

980

986

1,010

1,030

1,070

1,170

1,170

1.550

1,530

52,923

1,097

65,500

Calendar year 1955: Max 27,300 Min 880 Mean 3,539 Ac-ft 2,562,000

Water year 1955-56: Max 24,900 Mln 850 Mean 4,062 Ac-ft 2,949,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

and records for stations on nearby streams.

Note. Stage-discharge relation affected by ice Nov. 15 to Dec. 12, Jan. 26 to Mar. 1.

467240 O -58 -20
282 METHOW RIVER BASIN

Methow River at Twisp, Wash.

Location. Lat 48°21'40", long 120°06'50", in NW£ sec. 17, T. 33 N., R. 22 E., on left 

bank a quarter of a mile downstream from Twisp River and 0.3 mile east of center of 

Twisp.

Drainage area. 1,330 sq mi, approximately.

Records available. June 1919 to September 1956. 

published in WSP 1316.

Monthly discharge only for some periods,

Gage. Water-stage recorder. Altitude of gage is 1,580 ft (from topographic map). Prior 

to Oct. 3, 1919, several staff gages in the immediate vicinity at different datum. 

Oct. 3, 1919, to Sept. 30, 1929, and Oct. 31 to Nov. 6, 1933, chain gage on road 

bridge 40 ft upstream at same datum as staff gages. Nov. 7 to Dec. 18, 1933, staff 

gage at present site at different datum.

Average discharge. 37 years, 1,310 cfs (948,400 acre-ft per year1 ).

 Maximum discharge during year, 17,400 cfs May 21, June 1 (gage height, 8.23 ft 

:e well, 8.76 ft from high-water mark on outside gage on May 21); minimum daily,

- T3~V, C _1 O 1C

Extremes.

250 cfs PebT'5-12", 15.

1919-29, 1933-56: Maximum discharge, 40,800 cfs May 29, 1948 (gage height, 12.94 

ft in gage well), from fating curve extended above 18,000 cfs on basis of slope-area 

determination of peak flow; minimum observed, 134 cfs Sept. 4,5, 1926, Sept. 9, 10, 

1929, but may have been less during period of ice effect Jan. 6 to Mar. 4, 1937.

Remarks. Records good except those for periods of ice effect, which are poor. A large 

part of flow diverted above station for irrigation by two canals of Methow Valley 

Irrigation District, by Risley ditch, and by many other smaller ditches. Diversions 

for irrigation of 7,410 acres above station (1946 estimate).

Revisions (water years). WSP 512: Drainage area. WSP 1316: 1921(M) , 1928(M) , 1934.

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 17 May 18 to Sept. 30

1.6 190 4.0 3,420 1.6 29O 4,O 3,650

1.8 325 5.0 5,760 2.0 560 5.0 6,140

2.0 480 6.0 8,600 2.5 1,060 6.0 9,160

2.5 990 7.0 11,900 3.0 1,780 7.0 12,60C

3.0 1,660 3.5 2,640 8.O 16,500

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

1?.

n

14

15

16

17

18

19

20

21

22

23

24

2E

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

283

2S3

283

283

290

290

355

392

424

424

424

416

400

400

408

416

424

440

456

464

464

464

464

464

852

1,470

1,210

1,100

1,050

y fo

906

16,977

548

33,670

Nov.

848

822

*859

1,280

1,400

1,270

1,190

1,140

1,140

1,430

1,480

1,200

1,150

1,100

1,060

1,020

980

950

920

890

860

830

800

780

760

740

720

700

680

670

29,669

989

58,850

Dec.

660

651

642

633

624

624

615

615

597

579

588

*597

543

420

450

450

450

450

460

470

480

516

507

507

507

507

472

430

420

42C

420

16,304

526

32,340

Jan.

420

440

464

464

456

464

440

424

408

408

400

392

392

385

400

385

*378

378

370

370

362

362

355

340

320

300

290

280

28C

28C

28C

11,687

377

23,180

Feb.

270

270

260

260

250

250

250

250

250

250

250

250

260

260

*250

260

260

260

260

270

32C

325

318

311

311

304

297

304

*304

7,934

274

15,740

Mar.

297

290

297

290

276

269

283

276

283

276

262

269

290

269

*276

283

297

304

311

318

325

332

348

362

378

416

408

400

408

424

440

9,957

321

19,750

Apr.

456

480

507

534

588

597

615

651

710

826

966

1,180

1,400

1,780

2,510

2,980

2,870

2,920

3,360

4,060

5,420

7,180

7,410

6,290

5,680

*5.500

5,400

5,100

4,860

4,470

87,300

2,910

173,200

May

4,110

3,740

3,460

3,300

5,240

3,320

3,840

4,830

5,970

7,320

7,120

6,160

5,280

4,980

5,400

7,010

9,350

* 13, 000

15,800

15,900

16.100

*14,200

14,400

15,800

15,200

14,200

12,900

12,200

11,900

12 1 700

14 , 200

286,930

9,256

569,100

June

15,700

II'BOO

12,100

10,500

8,300

7,000

*5,800

5,440

7,240

8,140

6,420

5,710

5,790

6,220

6,090

5,440

5,420

7,720

8,140

6,170

5,550

5,440

4,960

4,440

4,030

4,410

4,930

4,290

3 580

210,170

7,006

416,900

July

3,260

3,390

3,560

3,450

3,540

3,470

3,120

3,080

3,430

3,650

3,670

3,760

3,540

3,140

2,680

*2,410

2,090

1,990

1,990

1,990

1,890

1,750

1,590

1,500

1,440

1,340

1,290

1,200

1,110

1,010

952

76,282

2,461

151,300

Aug.

896

907

*896

866

810

790

750

703

685

667

658

649

624

608

632

820

820

730

676

649

616

584

 560 560

576

750

721

658

608

576

560

21,605

697

42,850

Sept.

532

5l8

504

490

476

448

427

407

394

388

394

*407

400

394

381

374

368

355

348

336

329

316

316

316

316

329

348

355

400

462

11,828

394

23,460

Calendar year 1955: Max 15,700 Min 283 Mean 1,497 Ac-ft 1,084,000

Water year 1955-56: Max 16,100 Min 250 Mean 2,149 Ac-ft 1,560,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 12 to Dec. 1, Dec. 14-21, Dec. 28 to Jan. 

Jan. 25 to Feb. 21 (no gage-height record Feb. 3-12; discharge estimated on basis of 1 discharge 

measurement and weather records).
METHOW RIVER BASIN 283

Alta Lake near Pateros, Wash.

Location. Lat 48°01 I 30", long 119°56'30", in SW^NE£ see. 10, T. 29 N., R. 23 E., on west 

shore, 2| miles southwest of Pateros.

Drainage area.--4.03 sq ml.

Records available. November 1954 to September 1956 (fragmentary).

Gage. Staff gage read once dally. Altitude of gage Is 1,175 ft (from topographic map).

Extremes.. Maximum gage height observed during year, 8.76 ft June 17; minimum observed, 

 B7IB~ft Nov. 17.

1954-56: Maximum gage height observed, that of June 17, 1956; minimum observed, 

that of Nov. 17, 1955.

Remarks. Small diversion for Irrigation. No known regulation. Lake has no natural surface outlet.

Oage 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.

.

6.29

6.28

6.28

6.27

6.26

6.25

6.24

6.23

6.24

6.24

6.23

6.22

6.22

6.22

6.22

6.22

6.22

6.21

6.21

6.20

6.20

6.20

6.20

6.20

6.20

6.18

6.19

6.22

6.23

6.23

Nov.

6.22

6.26

6.29

6.29

6.28

_

6.27

6.27

6.26

6.26

6.25

6.24

6.21

6.20

6.18

6.17

6.16

6.18

6.24

6.24

6.23

6.22

6.24

6.24

6.24

6.25

6.26

6.25

6.25

6.26

Dec.

6.26

6.26

6.25

6.25

6.24

6.26

-

-

6.30

6.29

6.34

6.37

6.36

6.36

-

6.30

6.30

-

6.34

-

_

-

-

6.48

-

_

6.50

-

-

6.48

Jan.

_

6.48

-

-

-

6.54

6.53

6.53

6.54

-

.

-

6.55

6.55

6.60

.

6.61

-

-

6.63

6.63

-

6.64

-

-'

_

-

6.64

6.63

Feb.

_

-

6.62

6.61

6.61

_

-

-

-

6.60

6.6O

6.60

-

-

6.59

_

_

6.59

-

-

6.68

-

-

_

6.68

_

6.68

-

_

Mar.

_

-

6.72

-

-

_

_

-

-

-

.

«

-

-

-

6.68

-

_

-

-

_

-

-

_

-

_

_

-

_

Apr.

_

-

_

-

6.89

_

6.96

7.00

7.02

-

7.10

7.16

-

7.24

7.31

7.37

7.47

7.54

7.60

7.68

7.80

7.84

7.91

-

8.06

8.10

8.16

8.20

8. 24

May

8.27

8.30

8.32

8.34

8.37

8.42

8.47

8.5O

8.52

8.56

8.58

8.60

8.62

8.64

8.66

8.67

8.68

8.69

8.70

-

8.71

8.71

_

8.72

8.72

_

_

8.72

8 72

8!?3

June

8.73

8.72

_

-

8.72

8.7O

8.69

8.68

8.68

8.69

8.75

_

_

8.74

8.75

8.75

8.76

8.75

8.74

8.74

8.74

8.73

8.71

8.70

8.69

8.69

8.68

8.66

8.65

8 . 64

July

8.64

8.64

8.64

8.64

8. £4

8.62

8.62

8.62

8.62

-

_

8.60

8.59

8.58

8.56

8.55

8.54

8.53

8.51

8.51

8.50

8.48

8.46

8.45

8.44

8.41

8.39

8.36

_

sisi

Aug.

8.29

8.27

8.26

8.24

8.23

8.22

8.20

8.20

8.18

8.16

8.16

8.15

8.14

8.13

8.12

8.17

8.16

8.15

8.14

8.12

8.11

8.10

8.10

8.08

8.07

_

8.08

_

_

Sept.

8.01

7.98

7.97

7.96

7.94

7.92

7.92

7.91

7.90

7.90

7.89

7.89

7.88

7.88

7.87

.

7.86

7.85

7.85

7.84

7.83

7.82

7.80

7.80

7.79

7.78

7.77

7.76

7.75

7.74
284 CHELAN RIVER BASIN

Stehekin River at Stehekln, Wash.

Location. Lat 48°19'30", long 120°41'20", in SE£ sec. 26, T. 33 N., R. 17 E., on left 

bank 1,200 ft upstream from Boulder Creek, if miles upstream from Lake Chelan, and 

2 miles northwest of Stehekin. Records include flow of Boulder Creek.

Drainage area.--372 sq mi, includes that of Boulder Creek.

Records available.--October 1910 to October 1915, October 1926 to September 1956. Monthly 

discharge only for some periods, published in WSP 1316.

Gage.--Water-stage recorder. Datum of gage is 1,100 ft above mean sea level (unadjusted). 

Prior to Aug. 17, 1911, staff gage three-eighths of a mile upstream from mouth at 

different daturas (datum change made June 13, 1911). Aug. 17, 1911, to Oct. 31, 1915, 

staff gage a quarter of a mile downstream from Boulder Creek at different datum.

Average discharge.--35 years, 1,385 cfs (1,003,000 acre-ft per year).

Extremes.--Maximum discharge during year, 13,100 cfs June 1 (gage height, 27.22 ft); minimum, 145 cfs Mar. 16 (gage height, 18.32 ft).

1910-15, 1926-56: Maximum discharge, 18,900 cfs May 29, 1948 (gage height, 29.00 

ft), from rating curve extended above 9,000 cfs on basis of slope-area determination 

of peak flow; minimum, 56 cfs Jan. 21, 1930.

Remarks.--Records good except those for periods of ice effect or shifting control, which 

are fair. No regulation or diversion.

Cooperation.--Gage-height record collected in cooperation with Public Utility District 

No. 1 of Chelan County.

Revisions (water years). WSP 412: 1914. WSP 1316: 1911(M) , 1914-15(M) . The figure of

peak discharge for May 20, 1912 (erroneously published as 7,590 cfs) has been revised

to 7,090 cfs (gage height, 5.74 ft), superseding figure published in WSP 1316.

Rating tables, water year 1955-56, except periods of shifting control or ice 

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

Oct. 1 to Apr. 21 Apr. 22 to Sept. 30

18.2 142 20.0 980 19.4 620 23\O 4,110

18.5 230 21.0 1,850 20.0 950 25.0 7,600

19.0 420 23.0 4,390 21.0 1,680 27.0 12, 5OO

19.5 660 22.0 2,760

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Ac-ft

Oct.

388

380

368

420

424

384

372

429

510

*492

434

434

460

515

816

732

816

834

822

738

655

610

570

1,740

9,050

3,970

2,500

2,000

1,800

1,640

1,420

36,723

1,185

3.19

3.67

72,840

Nov.

1,230

1,150

2,520

4,730

3,200

2,460

2,060

2,010

2,940

6,360

3,570

2,620

2,250

1,940

1,740

1,610

1,490

1,400

1,290

1,170

1,080

987

945

917

889

840

810

756

*726

_708

56,298

1,877

5.05

5.63

111,700

Dec .

684

655

630

610

605

595

580

565

545

535

525

590

545

520

506

506

492

450

435

435

410

430

470

483

465

452

438

390

370

350

350

15,616

504

1.35

1.56

30,970

Jan.

350

350

360

350

350

352

328

308

300

296

*286

286

286

279

286

282

272

272

265

258

254

254

254

251

237

190

180

170

160

160

150

8,376

270

0.726

0.84

16,610

Feb.

150

170

190

224

221

218

203

194

188

188

191

194

185

182

155

155

170

175

185

185

185

176

170

173

167

167

164

170

164

5,259

181

0.487

0.53

10,430

Mar.

170

179

191

173

179

164

167

167

164

156

153

159

153

150

150

156

164

179

194

209

215

221

240

248

272

290

279

*276

290

304

312

6,324

204

0.548

0.63

12,540

Apr.

320

328

340

3S4

388

376

372

388

429

515

630

792

1,080

1,520

2,060

2,120

1,930

1,990

2,270

2,770

3,530

3,980

4,140

3,660

3,400

3,440

3,290

3,020

2,760

2 590

54,812

1,827

4.91

5.48

108,700

May

2,410

*2,250

2,140

2,050

2,040

2,180

2,660

3,580

4,540

4,860

4,260

3,560

3,100

2,990

3,360

4,440

5,860

7,860

9,160

9,560

8,500

7,480

8,060

*8,680

7,970

7,780

6,940

6,720

7,140

8,550

10,700

171,380

5,528

14.9

17. 13

339,900

June

11,100

8,460

7,710

7,160

5,360

4,320

3,760

'5,490

4,250

5,630

5,410

4,380

4,000

4,170

4,680

4,560

4,180

4,550

7,490

6,120

4,720

4,490

4,490

4,140

3,720

3,820

5,100

5,430

4 , 500

3,790

154,980

5,166

13.9

15.49

307,400

July

3,790

3,980

*4,030

3,970

4,120

4,140

3,720

4,180

5,040

5,540

5,720

6,370

6,420

5,570

4,800

4,340

4,050

4,320

4,780

5,000

4,700

4,170

3,770

3,730

3,560

3,080

*2,680

2,280

1,990

1,920

1,800

127,560

4,115

11.1

12.75

253,000

Aug.

1,710

1,620

1,360

1,210

1,250

1,320

1,370

1,450

1,520

1,570

1,620

1,620

1,750

1,940

2,340

2,180

1,700

1,510

1,540

1,700

1,800

1,750

1,700

1,600

1,630

1,720

1,510

1,290

1,310

1,170

1,090

48,850

1,576

4.24

4,88

96,890

Sept.

1,130

1,010

884

786

720

675

685

710

736

830

914

819

814

*819

819

764

758

802

824

866

878

720

655

1,020

1,310

2,160

1,420

1,110

1,620

1,540

28,798

960

2.58

2.88

57,120

Calendar year 1955: Max 11,000 Min 240 Mean 1,551 Cfsm 4.17 In. 56. 59 Ac-ft 1,123,000

Water year 1955-56: Max 11,100 Min 150 Mean 1,953 Cfsm 5.25 In. 71.47 Ac-ft 1,418,000

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice, Dec. 18-23, Dec. 28 to Jan. 5, Jan. 26 to Feb. 

Feb. 15-18. Shifting-control method used Oct. 1-25, Jan. 6 to Apr. 21, July 14 to Sept. 3.
CHELAN RIVER BASIN 285

Railroad Creek at Lucerne, Wash.

Location.--Lat 48°11'45", long 120°35'50", in sec. 9, T. 31 N., R. 18 E., on left bank 

half a mile upstream from mouth and half a mile southwest of Lucerne.

Drainage area. 64.8 sq mi.

Records available.--October 1910 to September 1913, October 1926 to September 1956. 

Monthly discharge only for some periods, published in WSP 1316.

Gage.--Water-stage recorder. Altitude of gage is 1,250 ft (from topographic map). 

Dec. 6, 1910, to June 30, 1913, staff gage at site 1,800 ft downstream at different 

datum.

Average discharge.--33 years, 203 cfs (147,000 acre-ft per year).

Extremes. Maximum discharge during year, 3,030 cfs May 31 (gage height, 6.41 ft), from 

rating curve extended above 1,400 cfs; minimum daily, 25 cfs Feb. 25-29, Mar. 12-16.

1910-13, 1926-56: Maximum discharge, 3,900 cfs May 28, 1948 (gage height, 8.1 ft, 

from floodmarks), from rating curve extended above 1,300 cfs on basis of slope-area 

and contracted-opening determinations of peak flow; minimum, less than 9.4 cfs sometime during period of ice effect Jan. 15-25, 1930.

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

which are poor. No regulation or diversion above station.

Cooperation.--Gage-height record collected in cooperation with Public Utility District 

No. 1 of Chelan County.

Revisions (water years).--WSP 1042: 1944. WSP 1122: 1936. WSP 1216: Drainage area. 

WSP 1316: 1941(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 June 18 June 19 to Sept. 30

1.3 

1.6 

2.0 

2.5 

3.0

20

44

89

188

355

3.5 

4.0 

5.0 

6.0

570

840

1,580

2,560

2.1 

2.5 

3.0 

4.0 

5.0

100

172

297

640

1,100

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

Day

1

2

3

4

5

6

7

6

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

 total

Mean

Cfsm

In.

Ac-ft

Oct.

60

60

60

65

65

60

60

65

7O

7O

*70

70

75

80

89

100

101

102

102

95

92

88

85

182

7 OS

423

255

211

194 

172

155

4,084

132

2.04

2.34

8,100

Nov.

142

138

223

444

313

245

214

211

300

854

444

328

288

251

229

239

195

185

183

165

155

147

142

140

138

136

130

123

*119 

116

6,917

231

3.56

3.97

13,720

Dec.

112

107

106

102

101

100

95

95

90

90

85

85

80

80

78

76

74

72

70

70

70

75

70

70

70

70

65

65

60 

60

60

2,503

80.7

1.25

1.44

4,960

Jan.

60

60

65

60

60

60

55

55

5O

50

5O

*45

45

45

45

45

43

40

39

38

38

37

36

35

33

32

31

3O

29 

27

26

1,364

44. 0

0.679

0.78

2,710

Feb.

26

30

33

34

55

35

55

50

30

30

30

3O

29

29

28

26

26

26

28

28

28

28

26

26

15.

25

25

25

25

831

28.7

0.443

0.48

1,650

Mar.

28

30

31

32

30

28

28

27

27

26

26

25

25

25

25

25

26

27

28

30

32

34

36

36

36

38

38

38

*40 

40

40

957

30.9

0.477

0.55

1,900

Apr.

40

50

50

55

60

7O

65

7O

80

9O

10O

116

138

180

229

251

242

251

281

328

391

476

480

455

419

419

415

391

375

359

6,906

230

3.55

3.96

13,700

May

*344

325

310

299

299

306

355

431

52O

561

525

453

431

427

480

580

686

858

1,020

1,060

1,310

1,230

1,210

1,230

*1,32O

1,3OO

1,120

1,090

1,120 

1,270

1.940

24,410

787

12.1

14.01

48,420

June

2.060

1,600

1,39O

1,370

888

708

585

*610

7 2O

912

981

828

742

758

822

930

852

894

1,040

905

729

692

696

660

6OO

600

724

770

680 

572

26,318

877

13.5

15.10

52,200

July

580

636

*656

640

628

640

596

640

747

783

801

864

878

801

7OO

636

588

620

696

752

734

648

584

576

572

504

*444

384

347 

323

506

19,304

623

9.61

11. 08

38,290

Aug.

3OO

294

262

259

236

239

247

254

262

262

262

262

278

303

353

353

294

262

257

275

294

292

281

284

278

289

262

239

234 

219

205

8,371

270

4.17

4.80

16,600

Sept.

20O

190

168

149

136

125

124

124

127

138

162

155

140

*138

140

136

129

134

140

142

143

124

109

T?9

143

2O9

190

157

170

195

4,466

149

2.30

2.56

8,860

Calendar year 1955: Max 2,380 Min 43 Mean 245 Cfsm 3.78 In. 51.36 Ac-ft 177,500

Water year 1955-56: Max 2,060 Min 25 Mean 291 Cfsm 4.49 In. 61.07 Ac-ft 211,100

Discharge measurement made on this day. 

Note. No gage-height record Oct. 1-15, 20-23, Dec. 7-12, 17, 2o, 21, 23-28, Jan. 1-26, Feb. 2 to 

Mar. 10, Mar. 12 to Apr. 11j discharge estimated on basis of 3 discharge measurements, weather records, and records for Stehekin River at Stehekin. Stage-discharge relation affected by ice Dec. 12- 

?.Z, Dec. 28 to Jan. 5, Jan. 27 to Feb. 5, Feb. 16-19, Mar. 11, 12.
286 CHELAN RIVER BASIN

Lake Chelan at Chelan, Wash.

Location. Lat 47°50'00", long 120 0 03'40", in lot 3, sec. 15, T. 27 N., R. 22 E., on south 

shore of Lake Chelan at Lakeside, 2 miles west of Chelan.

Drainage area. 951 sq mi (revised).

Records available. September 1897 to December 1899, January to June 1905, and December 

1910 to September 1911 (fragmentary gage heights only); October 1911 to September 1956. 

Prior to October 1940, records of change in contents published with records for Chelan 

River at Chelan. Records of change in contents prior to October 1911, published in 

WSP 482 and 492 with records for Chelan River near Chelan have been found to be unreliable and should not be used. Month-end contents October 1911 to September 1950 

published in WSP 1316.

Gage. Water-stage recorder. Datum of gage is at mean sea level, adjustment of 1912. 

Prior to Jan. 1, 1900, staff gage at Lakeside about 1 mile west of Chelan at datum 

1,070.18 ft above mean sea level, adjustment of 1912. Jan. 1 to June 30, 1905, staff 

gage at upper highway bridge at Chelan at different datum. Dec. 5, 1910, to Nov. 13, 

1927, staff gage at Forest Service boat landing at Chelan at datum 1,076.07 ft above 

mean sea level, adjustment of 1912.

Extremes. Maximum elevation during year, 1,100.00 ft Aug. 1 (contents, 676,100 acre-ft); 

minimum, 1,086.34 ft Apr. 9 (contents, 232,600 acre-ft).

1897-99, 1905, 1910-56: Maximum elevation, 1,100.05 ft July 19, 1947 (contents, 

677,800 acre-ft); minimum since completion of dam in 1927, 1,079.68 ft Apr. 3, 4, 1937 

(contents, 21,400 acre-ft). Minimum elevation 1,076.78 ft Jan. 27, 28, Dec. 2-5, 1898.

Remarks. Reservoir is formed by low concrete dam at lake outlet completed Sept. 3, 1927. 

Usable capacity between elevations 1,079 and 1,100 ft, 676,100 acre-ft. Regulation 

between these elevations is allowed by stipulation of Federal Power Commission. Water 

is used for power development. Elevation of lake maintained between 1,092 and 1,100 ft 

during period Aug. 16 to Sept. 15 for scenic effect and recreational purposes. In 1946, 

an estimated 6,280 acres were irrigated above station, with an estimated annual depletion of about 11,000 acre-ft.

Cooperation. Gage-height record collected in cooperation with Public Utility District 

No. 1 of Chelan County.

Revisions (water years). WSP 1246: 1951. WSP 1286: 1952. See also Records available.

Capacity table, water year 1955-56 (elevation, in feet, and capacity, 

In acre-feet)

1,036

1.087

1.088

1.089

1.090

1.091

1.092

1.093

221,800

253,800

285,800

318,000

350,200

382,600

415,000

447,400

1.094

1.095

1.096

1.097

1.098

1.099

1.100

480,000

512,600

545,200

577,800

610,500

643,300

676,100

Mean elevation, In feet, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

96.61

96.53

96.43

96.31

96.35

96.11

95.99

95.90

95.85

95.83

95.74

95.71

95.71

95.69

95.65

95.59

95.55

95.47

95.40

95.32

95.24

95.16

95.06

95.01

95.31

95.68

95.77

95.85

96.00

97.17

96.20

550,690

-15,320

Nov.

96.25, 

96.34

96.51

96.86

97.14

97.31

97.46

97.59

97.73

98.20

98.43

98.54

98.56

98.59

98.54

98.50

98.47

98.49

98.55

98.51

98.50

98.45

98.42

98.43

98.47

98.47

98.45

98.44

98.40

98.38

621,670

+70,980

Dec.

98.34 

98.30

98.25

98.21

98.17

98.11

98.03

97.96

97.91

97.84

97.83

97.83

97.73

97.64

97.56

97.49

97.41

97.29

97.25

97.18

97.14

97.14

97.11

97.04

97.02

97.05

97.02

96.95

96.86

96. 7S

96.64

564, 38C

-57.29C

Jan.

1

96.56

96.50

96.46

96.40

96.34

96.28

96.24

96.19

96.13

96.07

96.02

95.94

95.88

95.79

97.76

95.73

95.68

95.63

95.57

95.52

95.46

95.41

95.37

95.31

95.23

95.16

95.06

94.96

94.86

94.74

94.62

498,530

-65,850

Feb.

94.49 

94.36

-94.26

94.18

94.08

93.95

93.83

93.71

93.59

93.47

93.37

93.30

93.16

93.03

92.82

92.63

92.46

92.24

92.03

91.88

91.66

91.45

91.20

91.00

90.79

90.58

90.40

90.24

90.07

-

348,220

-150,300

Mar.

89.92

89.73

89.60

89.44

89.30

89.18

89.09

89.00

88.89

88.76

88.65

88.54

88.42

88.30

88.19

88.10

97.99

87.89

87.81

87.72

87.66

87.59

87.51

87.42

87.37

87.30

87.19

87.10

87.05

86.97

86.97

247,350

-100, 900

Apr.

86.80 

86.74

86.65

86.64

86.57

86.47

86.43

86.37

86.34

86.37

86.44

86.50

86.57

86.71

86.95

87.18

87.31

87.49

87.67

87.93

88.23

88.62

88.92

89.17

89.44

89.67

89.91

90.10

90.25

90.40

-

363,430

+116,100

Hay

90.51

90.58

90.68

90.74

90.83

90.95

91.08

91.22

91.51

91.90

92.21

92.38

92.46

92.53

92.62

92.81

93.11

93.42

93.79

94.27

94.67

94.95

95.25

95.64

95.95

96.27

96.49

96.53

96.61

96.75

97.03

583,310

+219,900

June

97.46 

97.64

97.77

97.85

97.84

97.74

97.80

97.87

97.94

98.12

98.13

98.12

98.19

98.25

98.41

98.58

98.71

98.90

99.27

99.56

99.49

99.46

99.49

99.47

99.40

99.45

99.56

99.70

99.51

99.45

-

657,100

+73,790

July

99.51 

99.66

99.70

99.71

99. .72

99.73

99. 72

99. 74

99.83

99.80

99.73

99.84

99.75

99.61

99.63

99.79

99.82

99.83

99.89

99.85

99.76

99.73

99.70

99.79

99.96

99.89

99.93

99.96

99.97

99.99

99.98

672,180

+15,080

Aug.

99.99 

99.89

99.85

99.82

99.80

99.78

99.77

99.75

99.71

99.70

99.70

99.70

99.74

99.76

99.80

99.87

99.89

99.86

99.87

99.89

99.89

99.88

99.86

99.87

99.85

99.88

99.91

99.85

99.80

99.75

99.,_6_8

663,660

-8,520

Sept.

99.67

99.62

99.57

99.53

99.46

99.38

99.29

99.22

99.15

99.11

99.07

98.99

98.94

98.86

98.80

98.75

98.68

98.62

98.57

98.51

98.44

98.31

98.22

98.16

98.09

98.09

98.07

98.01

97.96

97.95

605,270

-58,390

Calendar year 1955.................... t +126,400

Water year 1955-56.................... $ +39,260

t Contents, In acre-feet, at em 

of lake at Stehekln.

* Change In contents In acre-feet. 

Note.--Add 1,000 ft to obtain elevatloi

lonth, based on mean of elevations at Lakeside and at head

above mean sea level.
CHELAN RIVER BASIN 287

Chelan River at Chelan, Wash.

Location . Lat 47°50'05", long 120°00'40", in SEi sec. 13, T. 27 N., R. 22 E., near right 

bank in forebay upstream from control dam at outlet of Lake Chelan, a quarter of 

a mile south of Chelan.

Drainage area.--951 sq mi.

Records available. --November 1903 to September 1956. Published as "below Chelan Lake 

1904-5. Adjusted records for October 1903 to September 1911, published in WSP 482, 

492, and 870 have been found to be unreliable and should not be used.

Gage. Water-stage recorder and concrete power dam. Datum of gage is at mean sea level, 

adjustment of 1912. Prior to Jan. 7, 1927, staff gage at site 800 ft downstream at 

same datum. Jan. 7 to Sept. 30, 1927, staff gage about 500 to 1,000 ft below dam at 

same datum. Oct. 1, 1927, to Nov. 10, 1928, staff gage and Nov. 11, 1928, to Mar. 19, 

1939, water-stage recorder, at sites 2? miles downstream at same datum.

Average discharge. --52 years (1904-56), 2,038 cfs (1,475,000 acre-ft per year), adjusted 

for storage since October 1911.

Extremes . Maximum daily discharge during year, 12,100 cfs June 3; minimum daily, 52 cfs 

Oct. 30, Nov. 5, 6.

1903-56: Maximum daily discharge, 16,000 cfs May 30, 1948; no flow part of day 

Jan. 30, 1917, when lake outlet was blocked with ice, and at other times owing to 

artificial regulation.

Remarks . Unmeasured water that is diverted for irrigation above station is small percentage of total runoff. Chelan County Public Utility District No. 1 diverts water at 

Chelan to develop about 54,000 horsepower and to irrigate an unknown area near Chelan, 

which quantity is included in records of daily discharge. Prior to July 1, 1955, the 

diversion was by Washington Water Power Co. Diversions for irrigation of about 6,280 

acres, depletion 11,000 acre-ft (1946 estimate). Flow regulated by Lake Chelan (see 

preceding page) .

Cooperation. Records of water used for power and irrigation furnished by the Public 

Utility District No. 1 of Chelan County.

Revisions (water years ).--WSP 482: 

WSP 1246: 1951.

1904-13. WSP 612: 1924. WSP 1216: Drainage area. 

WSP 1286: 1952. See also Records available.

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

2,190 

1,950

1,910

2,100

2,110

2.200

2,130

2,190

1,900 

1,380

1,480

269

965

1,360

1,450

1,820

1,840

2,060

2,100 

2,130

2,150

2,130

1,960

2,000

2,200

1,720

1,770

397

372

52

775

51,060

1,647

101 , 300

-15,320

Nov.

214 

340

228

143

52.

52

157

107

852 

1,000

892

1,580

1,630

2,220

2,220

2,220

2,210

2,220

1,960 

1,780

1,680

1,940

1,830

1,390

1,400

1,320

1,190

1,530

1,600

1,460

37,417

1,247

74,220

+70,980

Dec.

1,460 

1,510

1,450

1,440

1,680

2,150

2,070

1,810

1,780 

2,250

2.260

2,250

2,130

2,040

2,040

2,240

2,260

2,250

2,250 

2,250

2,250

2,090

1,620

1,450

718

1,140

1,570

1,650

2,000

2,250 

2,170

58,478

1,886

116,000

-57,290

Jan.

2,190 

1,740

1,940

1,840

1,590

1,540

1,550

1,440

1,710 

1,790

1,740

1,790

1,960

1,770

1,640

1,610

1,620

1,750

1,550 

1,570

1,490

1.520

1,560

1,550

1,660

1,710

2,090

2,170

2,120

2,500 

2,290

54,590

1,761

108 , 300

-65,850

Feb.

2,290 

2,290

2,280

2,500

2,500

2,290

2.270

2,290

2,280 

2,280

2,280

2,280

2,300

2,790

3,510

3,240

3,580

3,970

3,870 

4,090

4.520

4,160

4,000

3,800

3,740

5,640

5,470

3,540

3,500

88,550

5,047

175,200

-150,500

Mar.

3.180 

3,080

2,920

2,990

2,620

2,250

2,230

2,240

2,240 

2,250

2,010

2,270

2,230

2,240

2,140

2,050

2,240

2,260

1,840 

2,240

2,220

2,230

2,240

2,240

2,230

2,230

2,230

2,230

2,230 2 230

2)230

72,060

2,325

142,900

-100,900

Apr.

2,070 

1,770

2,050

1,910

2,140

2,140

1,950

1,780

1,280 

957

881

1,020

925

925

934

927

1,110

1,030

1,100 

1,100

1,350

1,950

2,190

2.190

2,180

2,180

2,180

2,180

2,190

2,190

48,717

1,624

96,650

+116, 100

May

2,200 

2,220

2,210

2,220

2,210

2,250

2,220

1,460

1.210 

2,230

2,540

4,020

4,090

3,610

5,210

3,290

4,710

8,040

8,350 

8,170

8,750

8,570

8,130

8,560

8,270

8,950

10,600

10,500

10,700

10,800 

11.200

175,450

5,660

348,000

*-219,900

June

11,700 

11,800

12,100

11,600

10,400

7,490

5,440

4,920

4,970 

7,120

10,500

5,710

5,110

5,060

5,200

4,740

3,620

3,640

5,150 

8,240

9,020

7,110

7,110

7,120

6,040

4,680

5,140

8,810

9,040

5,420

214,000

7,133

424,500

+73,790

July

4,070 

4,730

5,800

5,860

5,850

5,880

5,530

4,800

7,260 

9,390

7,100

7,960

11.100

8,500

4,160

3,680

5,420

4,800

6,050 

7,760

7,040

6,080

4,860

2,770

5,850

4,020

2,820

*2,490

2.400

2,480

2,480

166,970

5,386

351,200

+15,080

Aug.

2.940 

2,700

2,230

2,240

2,250

2,240

2,240

2,240

2,250

2,110

1,890

1,740

1,820

2,150

2,110

2,160

2,190

2,090

1,870 

1,850

2,160

2,200

2,190

1,830

1,830

1.680

2,230

2,230

2,220

1^790

65,900

2,126

130,700

-8,520

Sept.

1,890 

1,610

1,420

1,700

2,130

2,000

2,210

2,170

1,900 

1,830

2,020

2,020

2,030

2,010

2,010

1,780

1,760

1,900

2,210 

2,210

2,210

2,220

2.240

2,210

2,210

2,210

2,220

2,210

2,220

2,220

60,980

2,035

121,000

-58,390

Adjusted for change In contents In Lake Chelan

Mean

Cfsm

In.

Ao-fti

1,398

1.47

1.70

85,980

2,440

2.57

2.86

145,200

955

1.00

1.16

58,710

690

0.726

0.84

42,450

433

0.455

0.49

24,900

683

0.718

0.85

42,000

5,575

3.76

4.19

212,700

9,236

9.71

11.20

567,900

8,374

8.81

9.82

498,300

5,652

5.92

6.85

546,500

1,987

2.09

2.41

122,200

1,052

1.11

1.25

62,610

Calendar year 1955: 

Water year 1955-56:

Max 

Max

10 

12

,100 

,100

Mln 28 

Mln 52

Mean 

Mean

2 

2

,048 

,989

Ac-ft 

Ac-ft

1,485 

2,170

,000

,000

Adjusted

Calendar year- 1955: 

Water year 1955-56:

Mean 

Mean

2 

3

,225

,043

Cfsm 2, 

Cfsm 3,

.54 

.20

In. 

In.

51 

45

.74 

.56

Ac-ft 

Ac-ft

1,609 

2,209

,000 

,000

* Discharge measurement made on this day.

t Change In contents In Lake Chelan, In acre-feet; furnished by Chelan Public Utility District 

No. 1.

Note. Discharges are combined flows of power conduit, irrigation diversion below dam, and waste 

water.
288 ENTIAT RIVER BASIN

Entiat River at Entiat, Wash.

Location. Lat 47 0 39'40", long 120°13'30", in SE£ sec. 17, T. 25 N., R. 21 E., on right 

bank at Entiat and a quarter of a mile upstream from mouth.

Drainage area. 419 sq mi.

Records available.--October 1910 to September 1925, June 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 690 ft (from topographic map). October 

~1910 to Sept. 30, 1925, staff gage at site three-quarters of a mile upstream at different datum.

Average discharge.--20 years, 510 cfs (369,200 acre-ft per year), unadjusted.

Extremes.--Maximum discharge during year, 4,960 cfs June 1 (gage height, 5.71 ft); minimum, 29 cfs Jan. 26, result of freezeup.

1910-25, 1951-56: Maximum discharge, 5,380 cfs June 18, 1916; maximum gage height, 

that of June 1, 1956; minimum discharge, that of Jan. 26, 1956.

Maximum discharge known, 10,800 cfs May 29, 1948, on basis of conveyance-slope 

determination of peak flow.

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

which are poor. Many diversions above station for irrigation of an estimated 2,560 

acres in 1946 with a resulting estimated depletion of 4,480 acre-ft of flow. Occasional regulation by millpond 10 miles upstream.

Revisions (water years). WSP 1316: 1914-16(M), 1918(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 17 May 18 to Sept. 3O

1.3 29

1.5 74

1.7 144

2.0 269

2.5 530

3.0 905

3.5 1,420

4.O 2,O3O

1.5 155

1.7 21O

2.0 325

2.5 600

3.0 990

4.0 2,100

5.0 3,610

6.0 5,550

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

32

33

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

107 

104

T6T

111

129

122

118

126

167

175

156

148

148

140

156

167

167

175

183

183

175

171

164

164

454

569 500"

450

395

354

315

6,60O

213

13,090

Nov.

287 

301

283

621

595

495

454

432

432

*725

718

550

520

500

480

460

450

435

42O

4OO

390

380

375

38O

390

427 

369

34O

320

300

13,231

441

26,240

Dec.

292 

278

234

22O

210

200

195

190

185

19O

200

210

230

220

2OO

19O

180

170

160

150

155

160

170

180

170

160 

150

*140

135

130

130

5,784

187

11,470

Jan.

135 

140

145

150

160

175

190

200

196

191

187

187

191

175

171

171

167

16O

152

152

152

152

144

*140

114

42 

12?

125

120

115

115

4,734

153

9,390

Feb.

115 

110

113

116

120

120

120

115

110

110

110

115

120

115

115

110

HO

110

105

105

1O5

105

100

1OO

1OO

100 

100

105

105

3,184

110

6,320

Mar.

110 

110

110

I6"5 105

105

110

110

115

120

125

13O

130

135

14O

150

160

170

180

190

2OO

208

217

234

274

325 

306

301

292

*297

301

5,565

180

11,040

Apr.

310 

325

344

374

422

390

374

374

400

454

536

582

658

7 SO

977

1,060

986

968

1,050

1,220

1,560

1,910

1,980

*1,780

1,640

1,59O 

1,560

1,5OO

1,380

1,300

28,784

959

57,09O

May

1,210 

1,130

1,060

1,02O

977

977

1,O5O

1,230

1,550

1,8OO

1,800

1,700

1,560

1,460

1,49O

1,740

2,210

3,060

*3,950

4,50O

*4,640

*4,i80

*4,080

*4,20O

4,270

4,100 

3,920

3,770

3,77O

3,950

4,41O

80,764

2,605

16O.20O

June

4,90O 

4,800

*4,370

*4,050

3,490

2,88O

2,400

2,130

2,000

2,330

2,65O

2,450

2,200

2,100

2,140

2,230

2,200

2,180

2,800

3,290

2,68O

2,290

2,180

2,O6O

1,910

1,780 

1,910

2,190

2,060

1,800

78,450

2,615

155,600

July

1,610 

*1,660

1,660

1,610

1,590

1,560

1,480

1,490

1,650

1,790

1,780

1,840

1,830

1,690

1,410

1,250

1,120

1,080

1,090

1,110

1,080

990

884

828

780

705 

635

*6OO

580

535

499

38,416

1,239

76,200

Aug.

475 

493

464

426

41O

390

380

370

370

366

356

348

343

352

370

511

415

37O

338

325

321

321

313

325

313

356 

317

297

277

269

253

11,234

362

22,280

Sept.

249 

224

220

210

201

192

186

178

175

183

207

231

204

195

189

*180

172

168

165

165

168

168

162

158

160

158 

183

178

180

231

5,640

188

11,190

Calendar year 1955: Max 4,61O Min 1O4 Mean 535 Ao-ft 387, 6OO

Water year 1955-56: Max 4,900 Min 42 Mean 772 Ac-ft 56O,1OO

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 13-21, Dec. 21 to Jan. 8, Jan. 27 to Feb. 24. 

No gage-height record Oct. 27, 28, Nov. 13-25, 28-3O, Dec. 4-2O, Feb. 25 to Mar. 21; discharge estimated on basis of weather records and records for stations on nearby streams.
WENATCHEE RIVER BASIN

White River near Plain, Wash.

Location. Lat 47°52'30", long 120°52'10", in NEf sec. S, T. 27 N., R. 16 E., on left bank 

at downstream side of Forest Service bridge, H milei downstream from Sears Creek, 

4 miles upstream from Wenatchee Lake (revised), and 12-j miles northwest of Plain.

Drainage area. 150 sq mi.

Records available.--May 1911 to September 1914 (fragmentary), August 1954 to September 

1956. Monthly discharge only for some periods, published in WSP 1316. Published as 

"near Chiwaukum" May 1911 to September 1914.

Gage.--Water-stage recorder. Altitude of gage is 1,880 ft (from river-profile map). May 

1911 to September 1914, staff gage at same site at different datum.

Extremes.--Maximum discharge during year, 5,700 cfs June 1 (gage height, 13.20 ft); minimum, 104 cfs Mar. 10 (gage height, 2.25 ft).

1911-14, 1954-56: Maximum discharge, that of June 1, 1956; minimum, that of Mar. 10, 

1956.

Remarks. Records excellent except those for periods of ice effect, which are poor. No 

regulation or diversion above station.

Revisions (water years).--WSF 1316: 1914.

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

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

2.3 

3.0 

4.0 

6.0

112

266

580

1,380

8.0

10.0

12.0

13.0

Discharge, In cubic

2,210

3,180

4,400

5,390

1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

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.

165

*160

156

204

218

184

186

226

282

266

238

*258

313

365

545

478

552

548

531

450

398

368

330

1,050

5^820

1,880

1,220

1,060

948

842

738

18,979

612

4.08

4.71

37,640

Nov.

654

615

1,790

5,880

2,260

1,660

1,340

1,300

1,570

3,060

1,820

*1,340

1,200

1,000

900

800

700

650

600

580

560

520

500

480

460

420

398

383

368

359

32,167

1,072

7.15

7.98

63,800

Dec.

341

327

307

299

296

290

277

277

266

263

296

657

420

410

400

370

360

360

350

350

350

360

370

360

330

310

300

300

280

270

*250_

10,396

335

2.23

2.58

20,620

Jan.

245

240

245

250

250

250

240

230

228

214

207

202

200

195

198

191

186

184

180

175

175

175

173

171

163

160

155

155

155

150

150

6,092

197

1.31

1.51

12,080

Feb.

150

150

150

150

155

173

156

144

146

142

142

146

140

136

125

130

*135

140

140

140

138

132

130

130

130

128

128

128

128

4,062

140

0.933

1.01

8,060

Mar.

134

125

134

126

123

121

125

126

125

125

125

125

125

125

128

128

134

134

136

142

144

*146

154

154

169

178

16?

167

169

173

173

4,362

141

0.940

1.08

8,650

Apr.

173

173

178

195

191

189

193

198

218

266

350

440

612

836

1,040

1,020

960

1,020

1,220

1,470

1,920

2 , 200

2,100

1,850

1,770

*1,800

1,760

1,620

1,500

1,420

28,882

963

6.42

7.16

57,290

May

1,300

1,220

1,150

1,090

1,060

1,120

1,380

1,810

2,260

2,540

2,220

1,910

1,730

1,690

1,840

2,270

3,020

4,080

4,720

*5,020

*4,530

4,020

*4,200

4,410

4,070

3,960

3,570

3,360

3,610

4,210

4,860

88,230

2,846

19.0

21.88

175,000

June

5,280

4,480

4,180

3,810

2,940

*2 , 400

2,120

1,990

2,410

3,080

2,980

2,410

2,230

2,400

2,680

2,580

2,450

2,630

3,730

3,240

2,560

2,490

2,500

2,340

2,120

2,130

2,810

3,060

2,580

2,160

84,770

2,826

18.8

21.02

168,100

July

2,240

2,730

2,940

2,640

2,520

2,500

2,310

2,660

3,140

*3,460

3,610

5,900

3,720

3,160

2,650

2,480

2,320

2,480

2,740

2,840

2,640

2,210

2,050

2,080

1,960

1,640

1,410

1,180

*1,040

1 *996 000 

75,246

2,427

16.2

18.66

149,200

Aug.

872

772

730

660

7 O2

744

769

780

785

790

786

772

790

859

956

842

692

640

654

699

716

692

660

646

636

626

604

514

510

464

419

21,739

701

4.67

5.59

45,120

Sept.

422

389

358

299

280

269

269

280

288

356

*503

353

313

310

310

293

288

299

310

321

504

245

218

504

506

626

437

374

634

506

10,624

354

2.36

2.63

21,070

Calendar year 1955: Max 5,120 Mln 144 Mean 876 Cfsm 5.84 In. 79.27 Ac-ft 634,200

Water year 1955-56: Max 5,280 Mln 121 Mean 1,053 Cfsm 7.02 In. 95.61 Ac-ft 764,600

Peak discharge (base. 2.000 efs). Oct. 25 (3:30 p.m.) 4,920 cfs (12.63 ft); Nov. 4 (2 p.m.) 4,550
290 WENATCHEE RIVER BASIN

Wenatchee Lake near Plain, Wash.

Location. Lat 47°49'50", long 120°46'30", In sec. 19, T. 27 N., R. 17 E., on north (left) 

shore, 2f miles upstream from outlet, 7f miles northwest of Plain, and 33 miles upstream from Leavenworth.

Drainage area. 276 sq ml.

Records available. January 1932 to September 1956.

gage. Water-stage recorder. Datum of gage Is 1,860.00 ft above mean sea level, subject 

to correction to datum of 1929. Prior to Jan. 4, 1935, staff gage at same site and 

datum.

Extremes.--Maximum elevation during year, 1,877.13 ft May 21; minimum, 1,869.68 ft Oct. 3,

1932-56: Maximum elevation recorded, 1,879.65 ft May 29, 1948; minimum, 1,869.27 ft 

Dec. 1, 1936.

Remarks. Records excellent. No regulation or diversions.

Revisions (water years).--WSP 1216: Drainage area. WSP 1396: 1944.

Mean elevation, in feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

69.71

69.70

69.68

69 . 68

69.79

69.81

69.81

69.85

70.05

70.17

70.16

70.14

70.18

70.21

70.36

70.48

70.50

70.55

70.56

70.53

70.45

70.34

70.27

70.34

72.09

73.05

72.38

71.86

71.71

71.59

71.36

Nov.

71.13

71.01

71.33

73.59

74.65

73.52

72.66

72.17

72.02

73.32

73.47

72.73

72.12

71.73

71.43

71.24

71.12

71.07

70.92

70.85

70.81

70.76

70.71

70.69

70.68

70.71

70.64

70.54

70.46

70.42

Dec.

70.38

70.34

70.28

70.26

70.24

70.24

70.23

70.21

70.19

70.17

70.27

70.72

70.99

70.75

70.64

70.60

70.55

70.48

70.42

70.42

70.39

70.43

70.54

70.54

70.48

70.44

70.37

70.30

70.21

70.14

70.11

Jan.

70.13

70.15

70.17

70.17

70.18

70.16

70.14

70.11

70.09

70.06

70.04

70.03

70.03

70.03

70.08

70.08

70.04

70.02

70.01

69.99

69.97

69.96

69.95

69.94

69.92

69.87

69.84

69.86

69.87

69.85

69.81

Feb.

69.79

69.76

69.78

69.82

69.82

69.84

69.83

69.81

69.81

69.81

69.82

69.88

69.88

69.88

69.86

69.82

69.80

69.79

69.79

69.79

69.78

69.77

69.76

69.77

69.79

69.77

69.76

69.78

69.77

Mar.

69.81

69.81

69.82

69.81

69.80

69.76

69.78

69.81

69.89

69.75

69.73

69.73

69.73

69.73

69.73

69.75

69.76

69.77

69.79

69.81

69.84

69.84

69.87

69.91

69.95

69.99

69.98

69.97

69.97

69. 99

70.01

 ~

Apr.

70.01

70.02

70.05

70.10

70.12

70.12

70.14

70.16

70.18

70.24

70.32

70.46

70.65

70.92

71.34

71.62

71.66

71.65

71.75

72.00

72.45

73.07

73.43

73.29

73.06

72.99

72.95

72.78

72.58

72.39

May

72.22

72.08

71.96

71.86

71.78

71.77

71.91

72.29

72.96

73.61

73.75

73.42

73.02

72.75

72.71

73.04

73.74

74.81

75.96

76.86

77.02

76.49

76.13

76.14

76.01

75.77

75.47

75.00

74.86

75.22

75.95

June

76.85

76.82

76.30

75.89

75.17

74.31

73.67

73.30

73.22

73.74

74.26

73.96

73.54

73.40

73.56

73.6-7

73.56

73.59

74.10

74.56

74.13

73.72

73.55

73.40

73.15

72.96

73.19

73.73

73.75

73.34

July

73.11

73.22

73.49

73.48

73.33

73.32

73.16

73.16

73.54

73.91

74.10

74.23

74.34

74.13

73.59

73.20

72.92

72.85

72.93

73.07

73.06

72.84

72.54

72.39

72.31

72.10

71.82

71.60

71.37

71.22

71.13

Aug.

71.03

70.93

70.86

70.75

70.72

70.72

70.72

70.72

70.74

70.74

_

_

_

-

-

_

_

.

_

-

_

_

_

_

-

_

-

-

-

-

Sept.

_

-

_

_

-

69.97

69.96

69.95

69.97

70.10

70.24

70.17

70.11

70.06

70.02

69.99

69.97

69.97

69.96

69.98

69.98

69.94

69.92

69.98

70.17

70.28

70.22

70.23

70.53

Note. Add 1,800 ft to obtain elevation above mean sea level.
WENATCHEE RIVER BASIN 291

Wenatchee River below Wenatchee Lake, Wash.

Location.--Lat 47°48'30", long 120°43'20", in sec. 28, T. 27 N., R. 17 E., on left bank 

0.1 mile downstream from lake outlet, 4-f miles northwest of Plain, and 17 miles northwest of Leavenworth. Prior to Sept. 7, 1956, at site 2f miles upstream.

Drainage area. 276 sq mi.

Records available.--January 1932 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,860.00 ft above mean sea level, datum of 

TT912; gage readings have been reduced to elevations above mean sea level. Prior to 

Jan. 5. 1935, staff gage and Jan. 5, 1935, to Sept. 6, 1956, water-stage recorder, at 

site 2^ miles upstream from outlet at same datum.

Average discharge.--24 years, 1,322 cfs (957,100 acre-ft per year).

Extremes.--Maximum discharge during year, 9,400 cfs May 21 (elevation of lake surface, 

1,877.13 ft); minimum, 208 cfs Oct. 4 (elevation of lake surface, 1,869.66 ft).

1932-56: Maximum discharge recorded, 13,700 cfs May 29, 1948 (elevation of lake 

surface, 1,879.65 ft); minimum, 96 cfs Nov. 30, Dec. 1-3, 1952; minimum elevation of 

lake surface, 1,869.27 ft Dec. 1, 1936.

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

Natural regulation in lake. No diversion.

Revisions. WSP 1216: Drainage area.

Rating tables, water year 1955-56 (elevation, In feet, and discharge, 

In cubic feet per second)

Oct. 26 to Sept. 3O

1,869.6

1,870.0

1,870.5

1,871.0

1,873.0

175

425

825

1,280

3,620

1,869.7

1,870.0

1,870.5

1,871.0

1,873.0

1,877.1

240

420

800

1,270

3,620

9,350

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

Day

1 

2

3

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

50

31

Ibta!

Mean

Cfsm

In.

Ac-ft

Oct.

236 

*250

219

219

284

296

296

322

462

556

548

532

»564

588

708

808

825

868

876

850

782

692

656

692

2,550

5.680

2,840

2,210

2,050

1,900

1,650

29,929

965

5.50

4.05

59,360

Nov.

1,400 

1,280

1,610

4,390

5.780

4,300

3,180

2,580

2,400

4,040

4,250

3,270

2,520

2,060

1,720

 1,510

1,390

1,340

1,190

1,120

1,080

1,030

989

971

962

989

926

836

768

736

60,597

2,020

7.52

8.17

120,200

Dec.

704 

672

624

608

592

592

584

568

555

559

616

998

1.260

1,050

926

890

845

784

736

*736

712

744

836

836

784

752

696

640

568

518

497

22,460

725

2.63

3.03

44,550

Jan.

511 

525

539

539

546

532

518

497

483

462

448

441

441

441

476

476

448

434

427

414

400

594

588

581

568

557

319

331

337

325

301

13,479

435

1.58

1.82

26,740

Feb.

290 

*273

284

507

307

319

513

301

301

301

307

345

543

343

351

507

295

290

290

290

284

278

273

278

290

278

273

284

278

8,651

298

1.08

1.17

17,160

Mar.

501 

501

507

501

295

273

284

301

349

268

256

256

256

256

256

268

273

278

290

301

*319

319

337

362

388

414

407

400

400

414

427

9,857

318

1.15

1.55

19,550

Apr.

427 

454

455

490

504

504

518

552

546

592

656

768

955

1,190

1,620

1,930

1,980

1,960

2,080

2,380

2,920

3,720

4.180

4,000

3,700

*5,610

5,560

5,550

5,080

2,850

55,451

1,848

6.70

7.47

110,000

May

2,640 

2,480

2,330

2,210

2,120

2.100

2,270

2,730

5,570

4,410

4,600

4,170

3,650

3,500

5,240

3,670

4,580

6,030

*7,640

8,990

*9.250

8,440

7,900

7,910

*7,720

7,380

6,960

6,300

6,100

6,610

7,63O

158,910

5,126

18.6

21.41

315,200

June

8.980 

8,950

8,150

7,550

6,540

*5,330

4,490

4,010

5,910

4,580

5,260

4,870

4,520

4,140

4,350

4,490

4,350

4,390

5,050

5,680

5,090

4,560

4,340

4,140

3,820

5.570

5,870

4,570

4,600

4,060

151,990

5,066

18.4

20.48

501,500

July

5,760 

3,910

4,260

4,240

*4,050

4,040

3,830

3,830

4,320

4,800

5,050

5,220

5,580

5,090

4,390

3,880

5,520

5,420

3,530

3,710

3,700

3,410

3,030

2,850

2,750

*2,500

2,160

1,910

1,660

1,490

1.400

111,090

3,584

15.0

14.97

220,300

Aug.

1.500 

1,200

1,130

1,020

998

998

998

998

1,020

1,020

1,000

950

950

930

1,000

1,050

990

900

820

800

800

800

780

770

780

820

780

730

680

630 

590

28,232

911

3.30

3.80

56,000

Sept.

560 

530

500

470

440

420

414

407

400

414

497

 592

546

511

483

455

441

434

434

434

441

434

414

394

14T

592

672

624

624

845

14,863

495

1.79

2.00

29,480

Calendar year 1955: Max 9,440 Mln 219 Mean 1,485 Cfsm 5.38 In. 73.06 Ac-ft 1,075,000

Water year 1955-56: Max 9,230 Mln 219 Mean 1,818 Cfsm 6.59 In. 89.68 Ac-ft 1,320,000

* Discharge measurement made on this day.

Note. No gage-height record Aug. 11 to Sept. 6j discharge estimated on basis of recorded range In 

stage and records for nearby streams.
292 WENATCHEE RIVER BASIN 

Chiwawa River near Plain, Wash.

Location. Lat 47°50'30", long 120°39'40", in SE^ sec. 13, T. 27 N., R. 17 E., on right 

bank half a mile upstream from Goose Creek, 6 miles north of Plain, 7 miles upstream 

from mouth, and 11 miles northeast of Chiwaukum.

Drainage area. 170 sq mi.

Records available. May 1911 to October 1914 (published as Chiwawa Creek near Leavenworth), 

August 1936 to November 1949, August 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,100 ft (from river-profile map).

May 29, 1911, to Oct. 31, 1914, staff gage at site 3 miles downstream at different datum.

Average discharge. 18 years (1911-14, 1936-49, 1954-56), 500 cfs (362,000 acre-ft per 

year).

Extremes. Maximum discharge during year, 5,080 cfs June 1 (gage height, 8.87 ft); minimum 

daily, 90 cfs Feb. 19-29, Mar. 5-14.

1911-14, 1936-49, 1954-56: Maximum discharge, 5,880 cfs May 29, 1948 (gage height, 

9.17 ft); minimum recorded, 56 cfs Oct. 24-27, 1942 (gage height, 3.73 ft), but may 

have been less during some periods of ice effect.

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

which are poor. No regulation or diversion above station.

Revisions.--WSP 1316: 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. 18 Mar. 19 to Sept. 30

3.9 

4.1 

4.5

97

165

355

5.0 

6.0 

7.0

67O 

1,570 

2,760

3.9 

4.1 

4.5 

5.0

104

172

357

640

6.0

7.0 

9.0

1,390

2,440

5,270

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Tbtal

Mean

Cfsm

In.

Ac-ft

Oct.

*119

133

129

136

173

154

147

169

250

290

201

197

193

*193

223

228

236

255

255

236

218

205

197

275

1.600

1,2EO

780

670

628

565 

470

10,745

347

2.04

2.35

21,310

Nov.

416

388

524

1,390

1,100

796

670

614

642

1,450

1,100

 828

642

579

518

500

470

450

430

420

400

380

360

340

320

310

290

280

270

2 °

17,137

571

3.36

3.75

33,990

Dec .

250

240

230

220

210

210

210

200

200

210

241

260

270 260"

230

200

180

170

160

170

180

190

180

170

160

160

150

150

 150

150

150

6,111

197

1.16

1.34

12,120

Jan.

150

160

160

160

170

170

160

160

160

160

155

155

151

143

143

147

140

136

136

133

129

133 1-33

129

125

125

120

120

115

110

110

4,398

142

0.835

0.96

8,720

Feb.

105

105

100

105

110

105

100

98

96

94

100

105

100

96

 96

94

92

92

90

90

90

90

90

90

90

90

90

90

90

2,783

96.0

0.565

0.61

5,520

Mar.

92

94

96

94

90

90

90

90

90

90

90

90

90

90

92

94

98

100

104

107

110

110

117

120

133

150

 143

140

140

143

143

3,320

107

0.629

0.73

6,590

Apr.

143

147

154

165

176

172

172

176

184

218

268

316

384

492

666

731

718

738

826

973

1,250

1,620

1,720

1,560

1,520

,570

,580

,500

,410

,340

22,889

763

4.49

5.01

45,400

May

1,270

1,210

*1,150

1,120

1.100

1,140

1,300

1,580

1,930

2,250

2,190

1,940

1,770

1,710

1,810

2,180

2,700

3,510

3,920

4.420

4,400

*3,910

 3,770

3,920

4,100

3,910

3,750

3,560

3,560

3,850

4,240

83,170

2,683

15.8

18.19

165,000

June

4,840

4,010

3,740

3,530

2,970

*2,450

2,100

1,880

1,850

2,160

2,400

2,200

1,980

1,950

2,060

2,180

2,130

2,100

2,610

2,930

2,430

2,140

2,080

1,980

1,830

1.720

1,860

2,150

1,950

1,720

71,930

2,398

14.1

15.74

142,700

July

1,650

1,940

1,910

1,800

1,700

1,640

1,560

1,590

*1,790

1,960

2,000

2.090

2,040

1,890

1,600

1,490

1,320

1,340

1,420

1,470

1,420

1,270

1,120

1,080

1,100

 952

840

744

660 

622

598

44,606

1,439

8.46

9.76

88,470

Aug.

568

556

504

460

460

454

460

460

460

454

448

432

432

448

504

538

443

409

378

384

389

378

362

362

362

368

342

316

296

292

^6§

12,987

419

2.46

2.84

25,760

Sept.

249

244

240

230

220

210

200

200

205

220

*250

268

218

209

205

201

197

192

192

192

201

188

ISO" 180

192

244

258

218

231 

521

6,555

218

1.28

1.43

13,000

Calendar year 1955: Max 4,550 Min 119 Mean 630 Cfsm 3.71 In. 50.30 Ac-ft 456,100

Water year 1955-56: Max 4,840 Min 90 Mean 783 Cfsm 4.61 In. 62.71 Ac-ft 568,600

* Discharge measurement made on this day.

Note . Stage-discharge relation affected by ice Nov. 16 to Dec. 9, Dec. 15 to Jan. 12, Jan. 25 to 

Mar. 14. No gage-height record Mar. 2-18, Sept. 3-llj discharge estimated on basis of 1 discharge 

measurement, weather records, and records for stations on nearby streams.
WENATCHEE RIVER BASIN 293

Wenatchee River at Plain, Wash.

Location. Lat 47°45'50", long 120°39'30", in lot 8, sec. 12, T. 26 N. , R. 17 E., on left 

bank at Plain a quarter of a mile downstream from Beaver Creek, 7| miles downstream 

from Nason Creek, and 12 miles north of Leavenworth.

Drainage area.--591 sq mi.

Records available. November 1910 to September 1956 in reports of Geological Survey. 

Published as "near Leavenworth" 1910-31. August 1904 to September 1953 (monthly discharge only) in State Water-Supply Bulletin 6.

Gage. Water-stage recorder. Altitude of gage is 1,805 ft (from river-profile map).

Frior to Jan. 8, 1932, staff gages at site a quarter of a mile downstream at different 

datum.

Average discharge. 52 years (1904-56), 2,220 cfs (1,607,000 acre-ft per year).

Extremes.--Maximum discharge during year, 17,100 cfs May 21 (gage height, 10.62 ft); minimum, 431 cfs Oct. 4 (gage height, 1.96 ft).

1910-29, 1931-56: Maximum discharge, 22,700 cfs May 29, 1948 (gage height, 12.43 

ft, from high-water mark In well): minimum, 168 cfs Nov. 30, 1952 (gage height, 

1.31 ft).

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

Wenatchee Park Land & Irrigation Co. diverts a maximum of about 12 cfs from Chiwawa 

River for irrigation of 1,400 acres near Plain. Natural regulation by Wenatchee Lake.

Revisions (water years) . WSP 482: 1911-14. WSP 1316: 1914(M) , 1916(M) , 1919(M) , 1921- 

23(M), 1927(M) .

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

* height, In feet, and discharge, In cubic feet per second)

1.9 

2.2 

2.5 

3.0

395

590

810

1,240

4.0

6.0

8.0

10.5

2,390

5,400

9,800

16,700

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

Cfsm

In.

Ac-ft

Oct.

*462

455

443

455

632

590

569

625

932

1,020

950

932

984

*992

1,180

1,310

1,330

,390

,410

,340

,240

,130

,050

,100

4,400

5.540 

4,300

3,520

3,340

3,100

2, 630

49,401

1,594

2.70

3.11

97,990

Nov.

2,290

2,120

2,700

6,980

8,550

6,340

4,700

4,060

3,960

7,020

6,670

5,140

4,020

3,400

2,890

*2,640

2,440

2,380

2,140

2,060

1,990

1,870

1,780

1,750

1,730

1,790 

1,690

1,560

1,450

1.590

99,480

3,316

5.61

6.26

197,500

Dec.

1,560

1,290

1,220

1,170

1,100

1,050

1,040

1,020

1,000

1,010

1,210

2,400

2.410

1,950

1,730

1,650

1,550

1,420

1,550

1,550

*1,300

1,460

1,670

1,580

1,480

1,410 

1,540

1,220

1,080

1,000

940

42,740

1,579

2.55

2.69

84,770

Jan.

920

920

950

950

940

950

900

870

85O

820

820

820

850

860

898

907

866

850

826

802

780

772

758

742

705

610 

600

590

590

580

580

24,796

800

1.55

1.56

49,180

Feb.

560

540

560

570

580

560

550

550

550

580

618

682

660

*652

560

510

570

583

604

618

652

611

583

583

590

583 

569

576

569

16,953

584

0.988

1.07

55,590

Mar.

618

682

690

660

611

576

590

597

597

534

507

520

527

507

507

514

520

554

548

576

*597

618

675

712

758

826 

818

810

810

842

19,707

656

1.08

1.24

59,090

Apr.

858

882

898

992

1,040

1,020

1,020

1,040

1,120

1,250

1,450

1,730

2,120

2,690

3,540

5,940

3,900

5,920

4,190

4,800

5,880

7,570

7,860

7,570

6,960

6,890 

6,820

6,460

5,980

5,620

109,610

5,654

6.18

6.90

217,400

May

5,270

*5,05O

4,820

4,660

4,540

4,580

4,980

5,920

7,420

8,740

8,840

7,900

7,000

6,500

6,560

7,480

9,250

11,800

14,500

*16,400

*16.6QO

15,100

14,500

14,400

*14,200

15,500 

12,800

11,800

11,600

12,400

14,000

502,910

9,771

16.5

19.06

600,800

June

16.000

15,900

14,500

13,500

11,800

9,750

*8,220

7,420

7,240

8,460

9,440

8,790

7,790

7,590

7,950

8,220

7,950

8,020

9,510

10,600

9,300

8,240

7,950

7,590

6,980

6,540 

7,110

8,290

8,140

7,200

275,950

9,198

15.6

17.56

547,500

July

6,690

7,110

7,550

7,570

7,000

6,950

6,560

6,600

*7,420

8,170

8,500

8,840

9,010

8,550

7,290

6,460

5,840

5,720

5,940

6,160

6,100

5,600

4,980

4,740

*4,610

4,190 

5,700

3,270

2,910

2,640 

2.480

188,910

6,094

10.5

11.89

574,700

Aug.

2.550

2,180

2,060

1,890

1,780

1,780

1,770

1,760

1,760

1,750

1,730

1,690

1,680

1,690

1,820

1,990

1,750

1,560

1,460

1,440

1,440

1,420

1,590

1,570

1,540

1,450 

1,540

1,230

1,150 

1,100

1.050

50,150

1,618

2.74

5.16

99,470

Sept.

984

941

882

854

788

742

720

698

690

712

874

1,050

*898

818

772

742

712

690

690

682

742

728

675

655

720

898 

1,010

958

984 

1.470

24,757

825

1.40

1.56

49,070

Calendar year 1955: Max 16,800 Min 443 Mean 2,638 Cfsm 4.46 In. 60.59 Ac-ft 1,910,000

Water year 1955-56: Max 16,600 Mln 443 Mean 3,293 Cfsm 5.57 In. 75.86 Ac-ft 2,391,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 5-10, Dec. 29 to Jan. 14, Jan. 26 to Feb. 10, 

Feb. 15-17.
294 WENATCHEE RIVER BASIN

Icicle Creek above Snow Creek, near Leavenworth, Wash.

Location.--Lat 47°32'25", long 120°42'55", in Sfi£ sec. 28, T. 24 N., R. 17 E., on right 

bank three-eighths of a mile upstream from Snow Creek and 4^ miles southwest of 

Leavenworth.

Drainage area. 193 sq mi.

Records available. September 1936 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,450 ft (from river-profile map).

Average discharge. 20 years, 620 cfs (448,900 acre-ft per year).

Extremes. Maximum discharge during year, 6,470 cfs June 1 (gage height, 11.38 ft); minimum, 106 cfs Mar. 11; minimum gage height, 2.37 ft Oct. 3, 4.

1936-56: Maximum discharge, 11,600 cfs May 28, 1948 (gage height, 13.93 ft), from 

rating curve extended above 7,000 cfs on basis of slope-area determination of peak 

flow; minimum daily, 45 cfs Nov. 30, 1952.

Revisions.--The maximum discharge for the water year 1943 has been revised to 3,880 

cfs May 26, 1943 (gage height, 9.7 ft, from recorded range in stage), superseding 

figure published in WSP 982 and 1316.

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

which are poor. No diversion. Some regulation in headwater lakes for irrigation.

Revisions (water years). WSP 1246: 1936-41. WSP 1286: 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 June 21 to July 31)

Oct. 1 to Feb. 2 Feb. 3 to Sept. 3O

2.3 

3.O 

4.0 

5.0

105

198

406

710

6.0 

7.0 

8.O 

9.0

1,150 

1,76O 

2,550 

5,5OO

2.5 

3.0 

4.0 

5.0

119 

186 

38O 

670

6.0 1,08O

7.0 1,640

9.O 3,35O

10.8 5,660

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsrn

In.

Ac-ft

Oct.

123

118

114

T53

200

160

145

178

375

321

244

237

276

282

375

345

336

350

352

329

291

264

242

385

1,500

955

689

650

692

658 

555

11,864

383

1.98

2.29

23,530

Nov.

475

430

1,020

5.180

1,820

1,22O

985

93O

1,280

3,060

1,810

1,180

930

850

790

730

700

640

600

560

520

47O

44O

430

470

475

432

401

382

570

27,580

919

4.76

5.31

54,700

Dec.

559

545

512

514

508

508

5O1

29O

280

270

270

500

150

400

580

370

560

55O

35O

540

54O

550

560

450

400

360

340

520

300

29O 

28O

10,645

543

1.78

2.05

21,110

Jan.

'2~60 270

250

240

240

250

250

220

220

210

210

210

205

205

2OO

200

200

2OO

200

195

195

195

190

190

190

185

ISO

180

175

175 

170

6,420

207

1.O7

1.24

12,750

Feb.

170

170

17O

170

170

170

170

170

170

170

17O

160

16O

16O

160

*160

150

150

ISO

150

148

148

147

145

147

145

145

145

145

4,585

158

O.819

0.88

9,090

Mar.

158

164

161

160

152

149

141

149

149

144

127

145

140

155

155

159

141

145

158

161

157

157

*165

178

199

209

2OO

197

199

202 

202

5,018

162

0.859

0.97

9,950

Apr.

204

209

224

250

250

240

25O

270

500

350

45O

600

800

9OO

1,O50

1,OOO

9OO

1,000

.1,300

1,700

2,OOO

2.500

2,200

2,000

1,9OO

1,900

*1,700

1,530

1,39O

1,510

30,477

1,016

5.26

5.87

6O,45O

May

1,240

1,190

1,120

1,050

1.05O

1,120

1,27O

1,650

2,010

2,200

2,150

2,000

1,800

1,7OO

1,900

2,200

2,610

5,880

*5,270

*5,660

*4,450

5,970

4,220

*4,240

5,64O

5,720

5,55O

5,10O

5,580

4,210 

5,44O

86,75O

2,798

14.5

16.71

172,000

June

5,600

*4,420

4,20O

5,760

*2,89O

2,570

2,16O

2,070

2,290

2,900

2,750

2,270

2,190

2,51O

2,510

2,330

2,200

2,470

3,56O

2,880

2,51O

2,250

2,250

2,090

1.84O

1,910

2,43O

2,610

2,210

1,850

79,66O

2,655

13.8

15.55

15 8,OOO

July

1,800

2,000

1,990

*1,93O

1,88O

1,890

1,82O

2,010

2,300

2,570

2,460

2,520

2,420

2,12O

1,740

1,570

1,430

1,470

1,620

1,660

1,55O

1,550

1,200

1,140

*1,O9O

944

852

756

666

61O 

57O

49,868

1,609

8.54

9.61

98,910

Aug.

557

498

486

442

452

428

425

420

418

408

408

400

598

4 OS

428

452

580

341

328

528

550

524

519

517

528

470

366

317

295

275 

252

11,936

385

1.99

2.30

23,670

Sept.

258

219

209

196

184

174

168

164

165

177

548

*279

224

197

184

171

164

160

157

167

269

216

188

182

194

207

212

200

275

458

6,524

211

1.O9

1.22

12,540

Calendar year 1955: Max 5,29O Min 114 Mean 721 Cfsm 3.74 In. 50.72 Ac-ft 521, 9OO

Water year 1955-56: Max 5,66O Min 114 Mean 9O5 Cfsm 4.69 In. 63. SO Ac-ft 656,700

Peak discharge (base. 2.50O crs). Hoy. 4 (12 m.) 5.72O cfs (9.20 ft); Hoy. 1O (7 a.m.) 5,66O efs 

(9.15 ft); May 2O (5 a.m.) 6,220 cfs (11.20 ft); June 1 (l a.m.) 6,47O cfs (11.58 ft); June 1O (1O 

p.m.) 5,O5O cfs (8.74 ft); June 19 (1 p.m.) 5,530 cfs (9.25 ft); June 28 (2 a.m.) 2,840 cfs (8.66 

ft); July 13 (12:50 a.m.) 2.7OO cfs (8.49 ft).

* Discharge measurement made on this day.

Note. Ho gage-height record Nov. 14-16, Dec. 8 to Feb. 2, Apr. 5-26, May 1O-15; discharge estimated on basis of recorded range in stage, weather records, and records for stations on nearby 

streams. Stage-discharge relation affected by ice Nov. 18-25, Dec. 13-22, Dec. 28 to Jan. 6, 

Jan. 26 to Feb. 21.
WENATCHEE RIVER BASIN 295

Wenatchee River at Peshastin, Wash.

Location. Lat 47°34'50", long 120°37'00", in SE^-SW^ sec. 8, T. 24 N., R. 18 E., on right 

bank 1 mile northwest of Peshastin and 3f miles upstream from Peshastin Creek.

Drainage area.--1.OOP sq mi, approximately.

Records available.--October 1928 to February 1929 (monthly discharge only), March 1929 to 

September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,028.04 ft above mean sea level, datum of 

1929. Prior.to Mar. 24, 1932, staff gage at site H miles downstream at different 

datum.

Average discharge. 28 years, 3,017 cfs (2,184,000 acre-ft per year).

Extremes. Maximum discharge during year, 24.200 cfs May 21 (gage height, 13.20 ft); minimum, 525 cfs Oct. 4 (gage height, 2.00 ft;.

1929-56: Maximum discharge, 32,300 cfs May 28, 1948 (gage height, 15.88 ft); minimum, 183 cfs Oct. 14, 1939; minimum gage height, 1.24 ft Nov. 1, 1952; minimum daily 

discharge, 270 cfs Oct. 2, 1929, Nov. 30, 1936, Dec. 1, 1952.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are fair. Numerous diversions upstream for irrigation of an estimated 3,200 

acres above station, and domestic use above and below station. Diversion by Icicle 

Creek irrigation canal 8 miles upstream from station is used for irrigation of a substantial part of the 22,000 acres irrigated below station. Some regulation by powerplant in Tumwater Canyon.

Revisions (water years). WSP 1316: 1929-32 (M).

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

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

2.0 

2.5 

3.0

525

850

1,310

5.0

8.0

13.1

3,720

9,670

23,800

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

Day

1 

2

5

4

5

6

7

8

9

10

11 

12 

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

50

31

Total

Mean

Ac-ft

Oct.

580

569

'558" 552

754

858

812

874

1,570

1,550

1,590 

1,520 

1,410

1,410

1,620

1,810

1,700

1,760

1,820

1,760

1,640

1,520

1,370

1,350

4,880

7.050 

57555

4,250

4,050

5,880

5,560

65,057

2,054

125,100

Nov.

2,950 

2,630

3,190

9,640

11,200

8,320

6,420

5,290

5,250

10,4OO

9,530 

7,280 

5,580

4,560

5,870

5,550

*5,300

5,220

5,000

2,860

2,720

2,570

2,450

2,410

2,370

2,440 

2,310

2,120

1,990

1,900

135,320

4,511

268,400

Dec.

1,850 

1,750

1,670

1,620

1,590

1,590

1,580

1,510

1,460

1^410

1,880 

4,290 

3,920

3,050

2,790

2,610

2,440

2,310

2,210

2,130

2,090

*2,260

2,440

2,380

2,150

2,000 

1,800

1,700

1,620

1,610

al,600

65,310

2,107

129,500

Jan.

al.590 

al,570

al,540

al,510

1,480

1,410

1,400

1,380

1,350

1,330

1,300 

1,270 

1,270

1,250

1,240

1,500

1,270

1,220

1,170

1,140

1,110

1,090

1,070

1,060

1,000

950 

900

*880

870

870

860

57,610

1,215

74,600

Feb.

a850 

a840

a830

a820

a 830

a 840

a860

a900

a920

al.OOO

1.150 

1,100 

1,030

984

850

800

820

900

930

957

1,020

1,010

984

950

898

866 

798

790

798

26,285

906

52,140

Mar.

805 

939

966

906

858

812

790

805

805

775

726 

733 

74O

726

733

754

812

858

93O

1,020

993

*984

1,070

1,200

1,370

1.550 

1,460

1,450

1,450

1,490

1,550

51,040

1,001

61,570

Apr.

1.560 

1,660

1,760

2,03O

2,120

1,980

1,950

2,040

2,230

2,490

2,890 

2,500 

3,800

4,630

6,020

6,480

6,140

6,100

6,670

7,700

9,570

11,400

11.600

10,700

10,100

9,97O 

*9,810

9,260

8,560

8,O40

171,560

5,719

540,500

May

7,550 

7,180

6,800

6,460

6.240

6,560

6,990

8,250

10,200

11 , 800

11,700 

10,500 

9,320

8,690

8,850

10,300

15,000

16 , 900

* 21, 000

*25.600

25,400

21,400

*20,400

20,600

20,000

19,400 

18,200

16, 80'0

16,600

18,100

21,100

427,670

15,800

848,500

June

25 . 800 

22,800

20/800

19,200

16,400

13,400

*11,400

10,400

10,300

12,100

13,200 

12,100 

11,000

10,800

11,400

11,600

11,200

11,400

15,800

14,800

12,900

11,600

11,200

10,600

9,740

9.260 

10,400

11,900

11,400

9,970

590,870

15,030

775,300

July

9,280 

9,880

10,500

10,200

9,740

9,62O

9,250

9,280

*10,40O

11,600

12,000 

12,400 

12,400

11,700

9,950

8,850

8,020

7,850

8,120

8,450

8,320

7,680

6,800

6,300

*6,140

5,480 

4,750

4,150

3,690

3,380

3,180

259,100

8,558

513,900

Aug.

5.000 

2,820

2,720

2,500

2,560

2,550

2,520

2,510

2,500

2,270

2,250 

2,200 

2,190

2,190

2,320

2,610

2,360

2,120

1,960

1,890

1,870

1,860

1,850

1,830

1,810

2,130 

1,940

1,770

1,600

1,530

1.450

66,620

2,149

152,100

Sept.

1,350 

1,270

1,200

1,110

1,040

975

922

890

858

998

1,220 

1,480 

*1,270

1,130

1,050

1,000

948

914

998

914

1,060

1,040

930

882

922

1,060 

1,300

1,240

1,280

1.900

33,151

1,105

65,750

Calendar year 1955 : Max 22,800 Min 552 Mean 3,593 Ac-ft 2,602,000

Water year 1955-56 : Max 23,800 Min 552 Mean 4,666 Ac-ft 5,587,000

Peak diacharge (baae, 11,000 cfs). Nov. 4 (11:50 p.m.) 12,200 cfs (9.05 ft); Nov. 10 (3 p.m.)

11.900 cfa (8.92 ft); Apr. 23 (3:30 a.m.) 12.000 cfa (8.94 ft): May 10 (10:30 p.m.) 12,100 cfa (9.00 

ft); May 21 (1:50 a.m.) 24,200 cfa (15.20 ft); June 1 (ll p.m.) 24,100 cfa (15.16 ft); June 20 (5:50

a.m. 15.500 cfs (10.21 ft); June 28 (10 a.m.) 12,100 cfs (8.99 ft); July 13 (7 a.m.) 12,700 cfa

* Diacharge measurement made on this day.

a No gage-height record; diacharge eatimated on baaia of weather records and recorda for station 

at Plain.

Note. Stage-diacharge relation affected by ice Qec. 25 to Jan. 8, Jan. 27 to Feb. 6, Feb. 15-19.
296 WENATCHEE RIVER BASIN

Sand Creek near Cashmere, Wash.

Location. Lat 47°25'50", long 120°30'45", in NWi sec. 6, T. 22 N., R. 19 E., 800 ft upstream from mouth and 6f miles southwest of Cashmere.

Drainage area. 19.8 sq mi.

Records available. May 1954 to September 1956 (discontinued).

Gage.--Water-stage recorder. Altitude of gage is 1,730 ft (from topographic map).

Extremes.--Maximum discharge during year, 425 cfs Aug. 15 (gage height, 5.95 ft), estimated on basis of computation of peak flow through culvert 600 ft downstream, adjusted 

for channel storage; minimum, 0.5 cfs Oct 1-4; minimum gage height, 1.08 ft Oct. 1-4, 

Aug. 22, 23.

1954-56: Maximum discharge, that of Aug. 15, 1956; minimum, 0.4 cfs Sept. 10, 1955 

(gage height, 1.06 ft).

Remarks --Records fair except those for periods Oct. 11 to Mar. 25 and Aug. 15 to Sept. 30, 

which are poor. No regulation or diversion.

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 total

Mean

Cfsm

In.

Ac -ft

Oft.

0.6

.5

75

.6

.8

.7

.7

.8

1.4

1.0

.9

.9

.8

.8

.8

.7

.7

.7

.7

.7

.7

.7

.8

.8

.9

.8

.0

.3

.5

.3 

.0

26.1

0.84

0.042

0.05

52

Nov.

0.9

1.0

1.7

2.1

1.9

1.5

1.2

1.0

1.3

1.2

1.0

.9

.8

.7

iJL

.6

.6

.6

.6

.6

.6

.7

.8

1.5

2.3

2.8 27B2.0

1.8

1.6

37.4

1.25

0.063

0.07

74

Dec.

.5

.4

.3

.3

.2

.2

.2

.3

.4

.7

.2

.0

.0

.5

.2

.0

.5

.0

.0

.0

8.0

10

15

10

7.0

7.0

10

9.0

8.0

*7.0 

6.0

147.9

4.77

0.241

0.28

293

Jan.

5.0

4.5

4.0

3.5

3.0

3.0

4.0

6.0

8.0

10

12

13

14

15

16

17 16"

16

15

14

13

12

11

10

9.0

8.0

7.0

*6.3

5.5

4.5 

3.0

288.3

9.30

0.470

0.54

572

Feb.

2.5

2.3

273

2.3

2.3

2.5

2.5

2.8

3.0

3.3

3.8

4.0

*4.3

3.6

3.6

3.4

3.2

3.0

2.5

2.5

4.0

5.9

5.6

5.3

5.6

5.9

5.6

5.3

6.4

109.3

3.77

0.190

0.21

217

Mar.

5.9

STB

7.7

9.2

13.5

22

25

20

16

13

12

11

11

11

11

12

15

18

22

25

28

32

36

41

47

*53

W

41

39

38 

39

725.1

23.4

1.18

1.36

1,440

Apr.

3739"

39

48

53

47

45

46

52

73

95

110

120

136

144

125

*104

117

138

160

190

166

115

101

*102

95

89

79

71

65

2,801

93.4

4.72

5.26

5,560

May

*60

57

56

54

54

58

68

72

73

6T

61

52

44

42

42

49

55

*56

52

45

38

32

30

*27

23

20

19

16.5

15.5

14

13.5

1,367.5

44.1

2.23

2.57

2,710

June

12.5

TT75

11

11

*9.6

8.8

7.7

7.4

6.8

12

9.2

8.0

7.7

7.4

7.4

7.0

6.8

6.8

7.7

6.2

5.9

5.9

5.1

4.8

47^

4.8

4.8

4.8

4.8

4.8

223.0

7.43

0.375

0.42

442

July

4.8

478

4.8

*4.8

4.8

4.8

4.6

4.6

4.6

4.3

4.3

4.1

4.1

3.9

3.9

3.9

3.6

3.6

3.6

3.6

3.4

3.4

3.2

*3.0

3.2

3.2

3.2

3.0

3.0

3.0

119.9

3.87

0.195

0.23

238

Aug.

2.8

2.8

3.0

2.8

2.8

2.6

2.6

2.6

2.5

2.5

2.5

2.5

2.3

2.3

*11

~672- 14.5

3.4

2.5

2.1

2.0

1.7

1.5

270

2.5

2.3

2.0

1.8

1.7

1.6

1.6

97.0

3.13

0.158

0.18

192

Sept.

1.5

1.5

1.4

1.4

1.4

1.3

T73

1.3

1.5

*2.5

ITS' 3.0

2.1

1.9

1.8

1.7

 1.7

1.6

1.6

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.6

1.6

1.7

49.9

1.66

0.084

0.09

99

Calendar year 1955: Max 34 Min 0.5 Mean 4.72 Cfsm 0.238 In. 3.25 Ac-ft 3,4,10

Water year 1955-56: Max 190 Min 0.5 Mean 16.4 Cfsm 0.828 In. 11.26 Ac-ft 11,890

Peak discharge (base, 25 cfs). Mar. 7 (time and discharge unknown); about Mar. 26 (time and discharge unknown)! Apr. 15 (1:30 a.m.) 175 cfs (3.70 ft); Apr. 22 (3 a.m.) 282 cfs (4.68 ft); Aug. 15 

(6 p.m.) 425 cfs (5.95 ft); about Sept. 11 (time and discharge unknown).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 11 to Nov. 9, Nov. 12, 13, Nov. 16 to Dec. 12, Dec. 14-21, 24-29, 

Dec. 31 to Jan. 27, Mar. 7-25, Apr. 16, and Aug. 24 to Sept. 9; stage-discharge relation indefinite 

Aug. 15-23 and Sept. 10-30; discharge estimated on basis of weather records, recorder graph, field 

notes, and records for nearby streams. Stage-discharge relation affected by ice Nov. 10, 11, 14, 15, 

Dec. 13, 22, 23, 30, Jan. 28 to Feb. 12 and Feb. 17-21.
WENATCHEE RIVER BASIN 297

Mission Creek near Cashmere, Wash.

Location.--Lat 47°30'15", long 120°28'3G", In SE^NE^ sec. 8, T. 23 N., R. 19 E., on right 

bank lj miles upstream from mouth and Ij miles south of Cashmere.

Drainage area.--77.9 sq ml.

Records available.--May 1954 to September 1956.

Gage .--Water-stage recorder. Altitude of gage Is 850 ft (from topographic map).

Extremes. Maximum discharge during year, 463 cfs Apr. 22 (gage height, 2.78 ft); minimum, 3.7 cfs Oct. 1, 2 (gage height, 0.49 ft).

1954-56: Maximum discharge, that of Apr. 22, 1956; minimum dally, 0.1 cfs Aug. 25 

to Sept. 12, 1955.

Remarks. Records good except those for Nov. 14 to Apr. 15, and Aug. 15 to Sept. 15, which 

are poor. No regulation. Many small diversions for domestic use and Irrigation above 

station.

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. 20 Apr. 21 to Sept. 30

0.4 

.6 

.8

1.0

2.1

6.1

1.3 

1.6 

2.0 

2.5

58

100

180

325

0.5 

.7 

l.C 

1.3

6.8 

13.5

1.6

2.0 

2.7

116

208

435

28 2.5 325 1.3 67 

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota]

Mean

Ac- ft

Oct.

3.7

3.7

4.1

4.1

5.4

4.8

4.6

5.4

13.5

12

7.5

6.8

6.8

6.1

5.9

5.6

5.4

5.2

5.2

5.0

4.8

4.8

4.8

4.8

5.6

5.4

5.2

5.6

9.3

11

7.5

189.6

6.12

376

Nov.

6.8

6.1

10.5

46

22

15.5

12.5

12.5

16

25

16.5

8.6

4.8

4.1

4.0

3.9

3.8

3.8

3.8

3.9

4.0

4.5

5.0

8.5

11

17

15.5

14

13

12

334.6

11.2

664

Dec.

11

10

9.0

8.0

7.0

7.0

7.0

8.0

8.0

9.0

20

25

20

10

7.0

8.0

9.0

10

11

12

13

13

13

14

14

15

16

15

14

*13

12

368.0

11.9

730

Jan.

12

12

13

13

13

14

15

20

27

27

26

26

28

28

29_

28

27

28

28

28

28

28

27

27

26

26

21

*18

17

16

14

690

22.3

1,370

Feb.

12

10

8.0

'675 6.0

7.0

8.0

9.0

10

11

13

16

*19.5

18

16

13

10

10

11

13

15

20

25

30

35

39

38

35

. _35_

498.5

17.2

989

Mar.

38

38

42

40

35

32

29

27

25

25

25

25

26

27

28

29

30

31

35

40

50

60

80

100

150

*202

170

150

140

140

150

2,019

65.1

4,000

Apr.

150

160

175

200

210

200

190

190

195

210

230

190

180

220

260

290

*248

242

257

311

414

*407

308

230

*225

214

187

158

147

134

6,732

224

13,350

May

*126

118

114

114

112

124

145

163

165

168

136

118

107

100

105

120

149

172

*187

200

170

147

140

134

122

114

107

102

98

96

102

4,075

131

8,080

June

98

90

85

79

*70

63

58

54

54

73

63

57

53

52

52

48

46

45

52

46

44

42

41

41

39

37

35

31

31

30

1,609

53.6

3,190

July

30

28

28

*25

24

23

22

21

21

21

21

21

17

16

16

15

14

14.5

14.5

14

14

13

12

 11.5

11

11

11

10.5

10

10

9.8

529.8

17.1

1,050

Aug.

9.5

9.8

10

9.8

9.5

9.2

8.9

9.2

9.2

8.9

8.6

8.0

7.7

7.7

19.5

16

14.5

13

11.5

12

11

10

9.5

10

14

12

11

10

9.8

9.5

341.3

11.0

677

Sept.

9.2

9.0

8.8

8.8

8.6

8.4

8.2

8.2

8.0

!7o

19

12

*10

9.5

9.2

8.9

8.9

8.6

8.6

9.8

11

9.2

8.9

8.6

8.6

8.6

8.3

8.6

8.9

9.2

280.6

9.35

557

Calendar year 1955: Max 108 Min 0.1 Mean 17.1 Ac-ft 12,360

Water year 1955-56: Max 414 Min 3.7 Mean 48.3 Ac-ft 35,030

Peak discharge (base. 100 cfs). About Mar. 26 (time unknown) 225 cfs (2.18 ft); about Apr. 

time unknown) 350 cfs (2.57 ft); Apr. 22 (5 a.m.) 463 cfs (2.78 ft); May 10 (2 a.m.) 177 cfs

16

1.88 ft); May 19 (12 p.m.) 222 cfs (2.05 ft); Aug. 15 (5 p.m.) 

time unknown) 219 cfs (2.00 ft); about Sept. 11 (time unknown)

cfs (2.08 ft); 

cfs (2.05 ft).

230 cf ut Aug. 26

233

Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Nov. 14-23, Nov. 28 to Dec. 10, Dec. 14-22, 

Dec. 28 to Jan. 7, Jan. 27 to Feb. 24, Mar. 4-14. No gage-height record Nov. 28 to Dec. 21, Dec 23- 

29, Jan. 2-8, Jan. £9 to Feb. 12, Feb. 16, 18-25, Mar. 10-17, 19-25, Mar. 27 to Apr. 8, Apr. 10-15, 

Aug. 23 to Sept. 12; discharge estimated on basis of weather records, recorded range in stage, and 

records for nearby stations.

 .&7240 O -58 -21
298 COLUMBIA RIVER MAIN STEM

Columbia River at Trinidad, Wash.

Location. --Lat 47°13;30", long 120°00'50", in SE£ sec. 13, T. 20 N., R. 22 E., on left 

bank half a mile southwest of Trinidad, 8y miles downstream from Colocham Creek, and 

12 miles downstream from Rock Island Dam.

Drainage area.--89.700 sq mi, approximately.

Records available.--January to December 1910 (gage heights only), May 1913 to September 

1956. Published as at Wenatchee" 1910, 1913-16, and as "at Vernita" 1917-30.

Gage.--Water-stage recorder. Datum of gage is 499.3 ft above mean sea level (riverprofile survey). Prior to Jan. 1, 1916, staff gage 1 mile upstream from highway 

bridge at Wenatchee (24 miles upstream) at datum 583 ft above mean sea level, unadjusted. Jan. 1 to Dec. 31, 1916, staff gage on pier of highway bridge at Wenatchee 

at datum 579.30 ft above mean sea level, unadjusted. Jan. 14, 1917, to Sept. 30, 

1930, staff gages at ferry at Vernita (50 miles downstream) at datum 388.7 ft above 

mean sea level, unadjusted.

Average discharge.--43 years, 119,500 cfs (86,510,000 acre-ft per year), unadjusted.

Extremes.--Maximum discharge during year, 553,900 cfs June 6 (gage height, 54.50 ft); 

minimum, 36,000 cfs Dec. 18 (gage height, 19.18 ft).

1913-56: Maximum discharge, 692,600 cfs June 12, 1948 (gage height, 59.35 ft); 

minimum, 4,120 cfs Feb. 10, 1932 (gage height, 11.40 ft).

Maximum discharge known, about 740,000 cfs June 7, 1894 (based on information obtained at other points).

Remarks.--Records excellent. Diversion above station for irrigation of about 500,000 

acres is small percentage of flow past gage. Some diurnal fluctuation caused by 

powerplants at Rock Island, Chief Joseph, and Grand Coulee Dam. Flow regulated by 

Franklin D. Roosevelt.Lake (see p. 272 ) and reservoirs in Kootena" - - -

kane, Okanogan, and Chelan River basins. lai, Pend Oreille, SpoRating table, water year 1955-56 (gage height, In feet, and discharge, 

in cubic feet per second)

21.4

23.0

26.0

30.0

35.0

48,900

59,500

82,500

118,800

177,500

40.0

45.0

50.0

55.0

250,100 

338,3OO 

443,200 

567,300

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.

72,600

74,300

73,400

75,400

79,900

77,300

72,800

65,000

66,200

71,400

66,700

69,800

66,400

67,000

66,400

59,200

58.500

61,800

63,300

62.3CO

62,500

67,900

69,200

69,500

68,500

74,600

73,100

74,800

74,800

69,800 

66,300

$2,140.7

69,050

$4,246

Nov.

80,100

80,300

77,500

80,300

83,600

73,800

81,800

88.700

84,700

82,200

80,900

72,700

76,600

86 , 800

82,200

78,500

79,100

*80,600

81,200

77,100

75,400

77,900

81,500

80,900

80,400

71,000

68,500

68,300

72,000

70,800

$2,355.2

78,510

$4,671

Dec.

69,100

69,700

75,600

63,600

61,500

71,600

80,100

79,400

67,300

62,300

56,600

60,100

72,300

69,100

72,300

75,900

73,100

49,000

57,600

73,400

73,400

60,300

69,300

59,200

60,600

64,000

74,700

78,800

82,400

85,200 

85,100

$2,152.6

69,440

$4,270

Jan.

80,500

81,100

83,500

85.700

83,400

81,300

76,500

77,500

76,000

80,700

83,900

79,300

72,300

72,100

71,300

68,800

76,100

75,000

68,800

65,700

66,000

66,200

64,400

75,500

*72,100

69,500

71,900

72,100

60,900

54,900 

68,300

$2,281.3

73,590

*4,525

Feb.

74.8OO

81,6OO

85,100

80,600

68,400

63,600

72, 700

74,400

73,500

75,300

74,300

67,900

66,800

74,100

71,700

73,700

79,300

81,200

75,600

77,900

76,600

72,300

65,400

68,700

69,500

67,900

70,700

74,700

77,600

::::::

$2,135.9

73,650

*4,236

Mar.

72,100

74,000

73,700

62,600

64,600

70,200

71,500

72,400

61,900

59,600

77,900

74,600

77,700

74,000

66,600

61,700

58,300

62,600

56,400

*63,400

66,500

64,300

63,200

60,200

55,500

64,700

98,500

121,000

115,100

126,300 

116,900

$2,307.8

74,450

$4,577

Apr.

111,800

116,400

115,900

125,600

126,400

117,800

109,800

109,600

111,100

111,000

111,500

112,900

114,700

125,400

129,500

132,200

150,100

175,200

162,600

121,000

221,200

266,500

310,800

532,200

340,800

359,000

349,400

345,100

352,200

*313,300

$5,661

188,700

$11,230

May

295,700

291,900

285,000

278,200

276,000

274,100

274,800

277,200

278,900

282,600

289,400

287,200

280, 900

274,600

278,000

280,200

284, 000

297,700

308,800

317,800

324,600

325,000

326,000

340, 200

380,600

596,200

408,000

419,500

422,100

448,500 

481,500

$9,984.6

322,100

$19,800

June

505,000

508,300

509,000

513,600

*523,600

539,600

546,100

544,500

541,700

534,900

520,800

498,600

481,800

471,400

455,200

458,800

417,900

577,700

379,800

418,600

402,800

389,700

387,400

380,800

385,700

354,800

343,400

361,200

350,600

337,400

$13,420.7

447,400

$26,620

July

3O9.200

294,300

293,400

288,300

286,900

277,000

270,700

263,900

256,200

264,100

*258, 900

258,700

261,100

264,600

252,700

244,200

248,500

242,500

241,600

242,500

237,600

228,400

230,800

224,800

220,200

217,600

217,000

211,700

202,300

*195,300 

191,700

7,696.1

248,300

$15,260

Aug.

186,000

178,500

165,800

161,000

154,900

155,000

152,000

145,400

141,600

125,800

122,200

118,200

106,100

116,900

101,500

105,200

112,400

102,100

107,900

99,500

109,800

106,600

107,400

103,300

104,500

106,300

88,900

113,200

106,000

107,000 

103,100

$3,811.9

123,000

$7,561

Sept.

95 , 9OO

95,000

88,3OO

84,500

97 , 200

99,400

90,800

89,500

87,300

74,800

74,200

75,9OO

71,600

69,400

*81,000

77,600

69,900

77,400

83,500

76,700

75,000

72,200

69,400

74,800

77,500

78,700

79,100

81,400

76,600

75,1OO

$2,419.3

80,640

$4,799

Calendar year 1955: Max 441,900 Mln 49,000 Mean 127,100 Ac-ft 92,000,000

Water year 1955-56: Max 546,100 Mln 49,000 Mean 154,000 Ac-ft 111,800,000

* Discharge measurement made on this day. 

$ Expressed in thousands.
CRAB CREEK BASIN 299

Crab Creek at Irby, Wash.

Location. Lat 47"21'30", long 118"51'00", in NW^ sec. 31, T. 22 N., R. 32 E., on right 

bank 8 ft upstream from highway bridge at Irby, 5 miles downstream from Lake Creek, 

and 7 miles west of Odessa.

Drainage area.--974 sq mi.

Records available.--September 1942 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,386.30 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947.

Average discharge. 14 years, 91.4 cfs (66,170 acre-ft per year).

Extremes. Maximum discharge observed during year. 4,170 cfs Mar. 2 (gage height, 9.73 ft); 

minimum, 5.6 cfs Nov. 12 (gage height, 1.85 ft).

1942-56: Maximum discharge observed, that of Mar. 2, 1956; minimum, 2.0 cfs Jan. 12, 

1948 (gage height, 1.80 ft).

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

1152,1316 

1182,1316 

1216

Water 

year

1949 

1950 

1951

Date

Feb. 24, 

Mar . 5 , 

Mar. 16,

1949 

1950

1951

Discharge 

(cfs)

2,970 

3,070 

2,410

Gage height 

(feet)

8.88 

8.96 

8.40

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

which are poor. No regulation. Some diversion above station for irrigation.

Revisions. Revised figures of discharge, in cubic feet per second, for high-water periods 

in the water- years 1949-51, superseding those published in WSP 1152, 1182 and 1216, are 

given herewith:

Date

1949

Feb. 18

19

22

24

25

26

27

1950

Feb. 26

Discharge

2,370

1,620

1,000

2,770

2,520

1,980

1,630

1,980

Date

1950-Con.

Feb. 27

28

Mar. 1

5

6

7

8

1951

Feb. 9

Discharge

2,340

1,830

1,500

2,890

2,640

2,540

1,750

584

Date

1951-Con.

Feb. 10

11

12

13

Mar. 15

16

17

18

19

Discharge

1,480

1,640

1,280

918

754

2,080

2,070

1,180

775

Month Cfs-days

47,476.5

57,142

-

Maximum

2,770

2,890

2,O8O

Minimum

26

14

11.5

16

337

11

11

49

199

14.5

18.5

Mean

744

135

130

490

908

157

158

424

497

119

119

Runoff in 

acre-feet

41,300

97,560

94,170

27,190

55,860

113,300

114,200

23,530

30,570

85,870

86,390

Revised peak discharge. 

2,970 cfs.

1949-5C: Feb. 19 (9 p.m 

2 p.m.) 3,070 cfs.

1950-51: Feb. 11 (6 a.m

 1948-49: Feb. 18 (8:30 a.m.) 2,700 cfs; Feb. 24 (6:30 p.m.) 

) 1,390 cfs; Feb. 27 (8:30 a.m.) 2,480 cfs; Mar. 5 ( 1 to 

,) 1,730 cfs (7.61 ft); Mar. 16 (11 p.m.) 2,41O cfs (8.40ft).
300 CRAB CREEK BASIN

Crab Creek at Irby, Wash. Continued

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

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

1.8

1.9

2.0 

2.2 

2.5 

3.0 

4.0

168

410

5.0 

6.0 

7.0 

8.0 

9.0 

10.0

648

920

1,350

2,030

3,120

4,600

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

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.

trf

.

- ?. 

e!

8.

8.2

8.2

240.7

7.76

477

Nov.

8.2 

8.2

8.2

8.2

7.7

7.7

7.7

7.7

*7.7

7.2

7.0

6.9

6.8

6.7

6.6

6.6

6.6

6.7

6.8

7.2

7.0

8.0

8.2 

8.2

9.0

11

To

9.4

9.0

8.6

234.8

7.83

466

Dec.

ttf

8.2

8.2

8.2

8.9

8.9

8.9

9.2

9.5

10

13

8.5

*8.5

8.5

8.5

8.5

8.5

8.5

9.0

11

285

1.580 

1,300

1,100

900

1,100

900

700

600

500

9,153.9

295

18,160

Jan.

400 

700

1,100

1,950

5.200

2,000

1,700

1,750

1,550

1,250

1,300

1,350

1,450

1,350

1,250

1,500

1,400

1,300

1,100

1,000

900

1,000

1,150 

900

750

650

560

500

400

350

300

36,060

1,163

71,520

Feb.

*240 

220

200

160

140

110

100

90

80

70

80

90

80

75

70

63

55

50

100

400

936

3.050

2,290 

1,020

730

694

595

569

*2,460

14,797

510

29,350

Mar.

3,400 

5.740

3,620

3,240

1,680

1,030

813

703

670

682

686

614

545

526

511

569

646

1,150

*1,320

1,200

1,200

941

944 

892

765

634

631

*576

509

473

451

35,367

1,141

70,150

Apr.

440 

417

396

365

354

347

331

324

517

306

301

272

262

255

240

232

219

209

198

190

176

161

156 

154

150

*147

143

134

128

120

7,444

248

14,760

May

114 

109

100

100

98

100

96

96

98

95

90

90

86

88

86

86

85

83

82

80

78

72

69

64

62

61

71

*62

59

57

53.

2,570

82.9

5,100

June

57 

50

48

49

52

53

53

55

57

58

57

54

50

52

53

53

53

52

52

48

46

46

44 

38

35

34

33

31

29

29

1,421

47.4

2,820

July

29 

30

30

*30

30

30

3O

30

30

30

30

34

30

29

29

29

29

29

29

29

29

29

29

28

28

28

28

28

28

28

28

907

29.3

1,800

Aug.

28 

28

28

27

26

26

25

25

25

25

25

24

*24

23

22

22

21

21

21

20

20

19

19 

19

19

20

19

18.5

18.5

17.5

17.5

693.0

22.4

1,370

Sept.

16.5

TeTs

16.5

15.5

15.5

15

15

15

14

14

14

14

14

14

14

15

14

13.5

14

14

13.5

13.5

14 

*14

14

14

13.5

13.5

13.5

13.5

431.0

14.4

855

Calendar year 1955: Max 2,040 Mln 6.6 Mean 85.2 Ac-ft 61,710

Water year 1955-56: Max 3,740 Mln 6.6 Mean 299 Ac-ft 216,800

Peak discharge (base. 300 cfsl. Dec. 23 (10:30 p.m.) 2,060 cfs (8.03 ft); Jan. 5 (2 a.m.) 3,670 

cfs (9.40 ft)} Feb. 22 (7 p.m.) 3,5dO cfs (9.28 ft); Mar. 2 (7 a.m.) 4,170 cfs (9.73 ft); Mar 20 

(3 a.m.) 1,450 cfs (7.18 ft).

* Discharge measurement made on this day.

Note. stage-discharge relation affected by Ice Nov. 11-24, Dec. 13-20, Jan. 26 to Feb. 20. No 

gage-height record Nov. 21 to Dec. 12, Dec. 25 to Jan. 4, Jan. 6 to Feb. 21; discharge estimated on 

basis of weather records and records for stations on nearby streams.
CRAB CREEK BASIN 301

Wilson Creek at Wilson Creek, Wash.

Location.--Lat 47°26', long 119°06', in SW£ sec. 6, T. 22 N., R. 30 E., on right bank 

half a mile upstream from mouth and town of Wilson Creek.

Drainage area.--About 470 sq mi.

Records available.--February 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is about 1,280 ft (from Great Northern Ry.).

Average discharge.--5 years, 6.16 cfs (4,460 acre-ft per year).

Extremes. Maximum discharge during year, 1,270 cfs Mar. 23 (gage height, 8.88 ft); no 

flow for many days.

1951-56: Maximum discharge, 1,420 cfs Mar. 16, 1951 (gage height, 9.59 ft), from 

rating curve extended above 270 cfs; no flow for long periods each year.

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

Diversions for irrigation above station. Flow regulated by storage for irrigation 

above station.

Rating tables, water year 1955-56, except period of ice effect (gage 

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

Oct. 1 to Mar. 23

4.8

4.9

5.0

5.1 

5.4

1.0 

3.3 

9.3

Mar. 23 to Sept. 30

5.7 69

6.0 121

6.5 240

7.0 405

5.0

5.1

5.2

5.3 

5.5 

5.7

6.0 

6.5 

7.0 

8.0 

9.0

96

212

370

820

1,340

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-rt

Oct.

0

0

0

Nov.

(*)

0

0

0

Dec.

(*)

0

0

0

Jan.

0

0

0

Feb.

*0

0

0

0

0

0

0

0

0

0

o

o

0

0

0

0

0

0

0

a2.0

a!2

a9.0

a7.0

a6.0

a5.0

a4.0

a4.0

a3.0

*2.6

54.6

1.88

108

Mar.

9.4

2.6

81

10

9.3

6.9

2.8

5.7

7.5

2.8

b2.5

b2.5

b2.5

b2.5

49

164

170

.2

*0

*0

11

403

908

1.100

1,000

945

*760

*562

335

414

442

7,411.2

239

14,700

Apr.

282

2l8

170

153

144

10£

92

89

76

72

65

58

54

49

46

43

42

41

40

37

37

36

35

38

44

*40

36

34

33

32

2,238

74.6

4,440

May

29

29

29

30

29

29

28

26

25

24

24

22

21

19.5

18

16

11

10.5

8.5

7.5

8.5

8.5

7.5

6.5

4.5

3.4

3. 1

*2.8

1.6

.7

_._!

483.2

15.6

958

June

0

0

0

July

(*)

0

0

0

Aug.

(»)

(*)

0

0

0

Sept.

(*)

0

O

0

Calendar year 1955: Max 22 Min 0 Mean 0.39 Ac-ft 282

Water year 1955-56: Max 1,100 Min 0 Mean 27.8 Ac-ft 20,210

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and information 

from local residents.

b Stage-discharge relation affected by ice.
302 CRAB CREEK BASIN 

Crab Creek near Moses Lake, Wash.

Location.--Lat 47°11'25", long 119°16'00", in SW^SE^- sec. 26, T. 20 N., R. 28 E., on left 

bank on downstream side of highway bridge, 3 miles upstream from Parker Horn and 4 miles 

north of town of Moses Lake. Prior to July 14, 1956, at site 300 ft upstream.

Drainage area. About 2,040 sq mi.

Records available. September 1942 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,070.39 ft above mean sea level (Bureau 

of Reclamation benchmark). Prior to July 14, 1956, at site 300 ft upstream at same 

datum.

Extremes.--Maximum discharge during year, 3,090 cfs Mar. 5 (gage height, 8.19 ft); minimum, 

10.5 cfs Feb. 14 (gage height, 1.55 ft).

1942-56: Maximum discharge, that of Mar. 5, 1956; no flow during several months 

each year prior to 1952, and part of each day Jan. 14, 15, 1953.

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

which are poor. Numerous small diversions for irrigation and domestic use above 

station. Most of natural flow from upper basin passes this station underground. No 

regulation. Beginning in 1952, return flow from irrigation on Columbia Basin project 

has increased runoff during summer months.

Cooperation. Three 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 Oct. 1-18)

Oct. 1 to July 13 July 14 to Sept. 30

1.6 

2.0 

2.5 

3.0 

3.5

119

214

4.0 

5.0 

6.0 

8.1

365

810

1,420

3,020

2.0

2.1

2.2

2.3

2.4

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

38

38

38

37

38

37

40

39

36

35

35

34

33

32

32

32

30

31

31

30

30

30

30

30

29

30

32

32

30

1,047

33.8

2,080

Nov.

29

32

33

30

29

28

28

28

28

*28

27

24

22

20

19

19

19

19

20

19

19

20

20

22

28

27

23

22

22

22

726

24.2

1,440

Dec.

22

21

20

20

20

20

19

19

18

19

19

20

*18

16

15

15

15

15

15

16

19

29

26

20

20

20

17

16

15

14

T4

572

18.5

1,130

Jan.

14

14

21

230

196

198

247

630

866

1,110

*810

620

492

412

340

308

277

240

248

243

235

237

235

230

168

237

500

550

450

300

*220

10,878

351

21,580

Feb.

170

120

80

60

50

40

30

25

20

16.5

16

16.5

15

14.5

11

14

14

14

14

15

15

16

16

18

270

1,190

1,450

» 1,060

*810

5,583.5

193

11,070

Mar.

620

888

1,920

2,780

*2,990

*2,600

1,830

1,260

908

695

538

524

448

432

416

393

386

390

*432

512

645

745

815

896

1,060

1,200

1,170

1,140

1,050

902

790

31,375

1,012

62,230

Apr.

740

700

630

574

504

452

432

386

358

337

301

274

260

254

232

217

193

178

164

157

151

142

136

128

120

119

*112

105

110

141

8,607

287

17,070

May

148

142

137

136

132

131

131

125

122

120

114

110

106

101

96

99

96

93

93

92

86

82

83

79

73

88

75

62

57

51

48

3,108

100

6,160

June

47

48

46

49

49

46

45

44

43

46

44

*43

43

46

48

47

45

44

44

43

41

41

41

39

37

37

37

37

35

33

1,288

42.9

2,550

July

32

51

*80

50

42

38

35

32

30

2_9

29

29

29

30

31

32

32

32

31

31

31

31

31

31

31

32

32

32

33

34

36

1,079

34.8

2,140

Aug.

37

38

38

38

38

39

40

40

40

40

41

41

42

*41

40

40

40

41

41

41

41

41

41

43

44

48

50

48

47

46

46

1,291

41.6

2,560

Sept.

46

46

45

46

46

46

46

46

46

46

46

46

46

46

il

46

46

47

46

47

46

45

*44

45

45

45

45

44

44

44

1,369

45.6

2,720

Calendar year 1955: Max 317 Mln 10 Mean 37.8 Ac-ft 27,390

Water year 1955-56: Max 2,990 Min 14 Mean 183 Ac-ft 132,700

* Discharge measurement made on this day.

Note. No gage-height record July 21 to Aug. 3; discharge estimated on basis of weather records 

and recorded range in stage. Stage-discharge relation affected by ice Nov. 11-23, Dec. 8, 9, 13-21, 

Dec. 27 to Jan. 2, Jan. 27 to Feb. 9, Feb. 15-23 (no gage-height record Jan. 30, Feb. 2, 3. 15-23; 

discharge estimated on basis of weather records and records for stations on nearby streams).
CRAB CREEK BASIN 303

Park Lake near Coulee City, Wash.

Location. Lat 47°35', long 119°24', in NW£ sec. 14, T. 24 N., R. 27 E., on southeast 

shore1 , 1 mile upstream from outlet and 5| miles southwest of Coulee City.

Records available. March 1938 to September 1956 (fragmentary).

Gage. Staff gage read 2 or 3 times a month. Datum of gage is at mean sea level (Bureau 

of Reclamation benchmark).

Extremes. 1938-56: Maximum elevation observed, 1,096.44 ft Feb. 9, 1950; minimum ob- 

 served, 1,094.17 ft Sept. 30, 1939.

Maximum elevation known, 1,101.3 ft (from well-defined alkali line at gage), date 

of occurrence unknown.

Remarks. Some diversion from tributary for irrigation.

Elevation, in feet, water year October 1955 to September 1956

Day

2

4

5

6

7

9

13

18

19

20

21

22

23

24

25

26

27

28

29

31

dot.

-

_

95.40

_

-

-

-

_

-

-

95.50

_

-

-

-

_

_

-

-

Nov.

-

_

-

_

95.58

95.58

-

_

-

-

95.98

_

-

.

-

_

_

-

Dec.

-

.

95.88

_

-

-

_

-

95.85

_

_

-

_

-

_

_

-

Jan.

-

_

-

_

-

95.84

-

_

-

-

_

_

95.96

.

-

_

_

-

Feb.

_

-

95.86

-

-

-

_

-

95.92

_

-

_

-

_

_

-

Mar.

-

_

-

95.78

-

-

-

_

95.58

-

_

_

.

_

-

_

_

-

Apr.

95.57

.

-

.

-

95.87

-

_

-

95.92

_

_

-

_

-

95.92

-

May

-

95.80

-

_

95.77

-

-

_

-

-

95.79

-

_

-

_

95.76

June

-

95.74

-

_

-

-

-

95.83

-

-

_

-

_

-

_

_

-

July

95.85

95.65

-

_

-

-

-

.

-

-

_

_

95.70

_

-

_

_

-

Aug.

-

_

-

95.73

-

-

95.74

_

.

95.74

_

«

-

.

-

_

_

-

Sept,

-

95.67

-

_

-

-

-

-

-

_

_

-

95.68

_

_

-

Kote. Add l,00o ft to obtain elevation above mean aea level.
304 CRAB CREEK BASIN

Park Creek below Park Lake, near Coulee City, Wash.

Location. Lat 47°34'20", long 119°25'10", in SWi sec. 15, T. 24 H., R. 27 E., on left 

bank at highway crossing 100 ft upstream from mouth, 500 ft downstream from Park Lake, 

and 6-g- miles southwest of Coulee City.

Drainage area.--About 400 sq mi, most of which is noncontributing to surface runoff. 

Records available. July 1945 to September 1956.

Gage.--Water-stage recorder and concrete control. Datum of gage is 1,091.52 ft above 

mean sea level (Bureau of Reclamation benchmark).

Average discharge. 11 years, 8.29 cfs (6,000 acre-ft per year).

Extremes.--Maximum discharge during year, 24 cfs Feb. 29 (gage height, 2.32 ft); maximum 

gage height, 2.95 ft Dec. 14 (backwater from ice); minimum discharge, 0.6 cfs Nov. 11 

(gage height, 1.67 ft).

1945-56: Maximum discharge, 47 cfs Feb. 9, 1951 (gage height, 2.71 ft); maximum 

gage height, 3.05 ft Jan. 28, 1950 (backwater from ice); minimum discharge not determined, probably less than 0.1 cfs during period Aug. 17 to Sept. 21, or Oct. 1-17, 

1945 (gage height, less than 1.4 ft).

Remarks. Records good except those for periods of ice effect, which are fair. Some 

diversion during summer months for irrigation above Park Lake. Occasional regulation 

by operation of fish screen at outlet of Park Lake.

Revisions.--WSP 1216: Drainage area.

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

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

1.6

1.7

1.8

1.9

0.4 

1.2 

2.5 

4.4

2.0

2.1

2.2

2.3

7.1

11

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

Total

Mean

Ac- ft

Oct.

8.8

9.2

9.2

9.2

8.4

9.2

*7.3

8.8

8.8

9.2

9.2

9.2

9.2

9.6

9.6

10.5

10.5

10.5

10.5

11

11

11.5

11.5

12

12

11

10

10

11

11.5

11.5

310.9

10.0

617

Nov.

11

11.5

12.5

12.5

12.5

11.5

11

11

*11.5

11

7.7

.9

.8

.7

.7

.7

.7

.7

.8

1.0

1.2

9.0

18.5

18

17

16.5

9.2

9.6

18

17

264.7

8.82

525

Dec.

17

16.5

16.5

16

16

15.5

15.5

15.5

15.5

15.5

16

16

15

»14.5

14

14.5

14.5

14.5

14.5

14.5

14.5

16

16

15.5

15.5

15.5

15.5

15.5

14.5

14.5

14.5

475.0

15.3

942

Jan.

14.5

14! 5

14.5

14.5

15.5

15.5

15.5

15.5

14.5

14.5

15.5

15.5

15.5

16

16

L6.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16.5

16

15.5

14.5

486.0

15.7

964

Feb.

*14.5

14.5

14.5

14.5

14

14

14

13.5

13.5

13.5

13.5

13

13

13

13

13

13

13

13

14

14.5

15.5

16

16.5

16.5

16.5

16.5

18.5

20

- -----

422.5

14.6

838

Mar.

19.5

17

14.5

14

13.5

16.5

18

17

17

17

18

18

18

17

17

17

17

*17

18

18

18

18

17

18

18

18

18

16.5

16.5

16

530.0

17.1

1,050

Apr.

16

16

16

16

12.5

5.6

6.2

6.8

5.0

3.7

7.7

6.2

4.9

4.6

5.9

7.4

10.5

10.5

9.2

7.4

7.7

7.7

13.5

16.5

16.5

16.5

*16

15.5

14.5

14.5

317.0

10.6

629

May

14.5

14.5

14.5

14.5

15.5

15.5

15.5

16

16.5

16.5

16.5

16

15.5

15.5

14.5

14.5

11.5

8.8

6.8

4.2

5.5

14.5

15.5

13.5

13

14.5

5.8

*1.4

T7o

8.6

14

388.6

12.5

771

June

12.5

13

13

13

10.5

11

12

12.5

13

13.5

13.5

14

14

15.5

jj

14

14.5

12

10

9.6

9.6

9.6

9.2

8.4

8.4

8.0

7.7

7.4

7.1

6^5

339.0

11.3

672

July

6.5

6.5

6.5 *6.8

678

6.5

6.5

6.5

6.5

5.9

5.9

5.9

6.2

6.2

6.5

6.5

6.2

6.5

6.5

6.5

6.8

4.6

2.4

2.2

2.1

1.7

1.6

1.3

1.3

3.5

6.2

161.6

5.21

321

Aug.

£,2.

6.2

6.8

6.8

7.1

7.1

7.

.7.

7.

7.

7.

7.

*7.

7.1

7.4

7.4

7.1

7.1

6.8

6.8

6.8

6.8

6.8

6.8

7.1

7.1

7.1

7.1

6.8

6.5

6.2

216.5

6.98

429

Sept.

5.9

5.9

5.6

5.4

5.1

5.4

5.4

5.4

5.6

5.6

5.6

5.9

5.9

6.2

6.2

6.2

6.2

6.5

9.2

12

12

10.5

11

*11

11

11

10.5

10

9.6

9.6

231.4

7.71

459

Calendar year 1955: Max 18.5 Mln 0.7 Mean 10.1 Ac-ft 7,300

Water year 1955-56: Max 20 Mln 0.7 Mean 11.3 Ac-ft 8,220

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 12-21, Dec. 13-14, Jan. 3-5, Feb. 8-20.
CRAB CREEK BASIN 305

Blue Lake near Coulee City, Wash.

Location. Lat 47°34 1 , long 119°26' , In SE£ sec. 16, T. 24 N., R. 27 E. , on right shore 

2-| miles upstream from outlet and 7 miles southwest of Coulee City.

Records available. March 1938 to September 1956 (fragmentary).

Gage. Staff gage read 2 OP 3 times a month. Datum of gage Is at mean sea level (Bureau 

of Reclamation benchmark).

Extremes.--1938-56: Maximum elevation observed, 1,093.50 ft Apr. 27, 1956; minimum observed, 1,090.50 ft Nov. 10, 1939.

Maximum elevation known, 1,101.2 ft (from alkali line at gage), date of occurrence 

unknown.

Remarks. Some diversion from tributaries for irrigation.

Elevation, In feet, water year October 1955 to Septenfoer 1956

Day

1

2

4

5

6

7

9

13

14

18

19

20

21

22

23

24

25

26

27

28

29

31

Oct.

_

-

92.54

.

-

-

_

-

_

-

-

92.61

_

-

_

-

_

.

-

_

-

Nov.

.

-

.

-

_

92.80

92.85

_

-

_

-

-

92.82

_

-

-

-

_

-

_

_

Dec.

_

-

_

93.16

_

-

-

.

93.00

_

-

93.32

_

_

-

-

-

_

-

_

_

Jan.

_

-

.

-

_

-

93.02

.

-

_

-

-

_

_

93.10

-

-

_

-

_

_

Feb.

93.12

-

_

-

93.08

-

-

.

-

_

_

92.98

_

_

-

_

-

_

_

_

_

Mar.

.

-

_

-

93.04

-

-

_

-

_

93.05

-

_

_

-

_

-

_

_

_

Apr.

_

93.22

_

-

_

-

93.17

_

-

_

-

93.40

_

_

-

-

-

.

93.50

-

_

May

_

-

93.30

-

_

93.26

-

.

-

_

-

-

93.09

_

-

.

-

_

-

93.16

_

June

_

-

93.35

-

_

-

-

_

-

93.45

-

-

_

_

-

_

-

_

_

_

_

July

.

93.25

93.26

-

.

-

-

.

-

_

-

-

_

_

93.29

-

-

.

-

-

_

Aug.

.

-

_

-

93.08

-

-

93.03

-

_

-

93.10

_

_

-

-

-

_

_

-

_

Sept.

.

-

92.76

-

.

-

-

_

-

-

-

_

.

-

92.57

-

_

_

_

_

Note. Add 1,000 ft to obtain elevation above mean sea level.
306 CRAB CREEK BASIN

Lenore Lake near Soap Lake, Wash.

Location.--Lat 47°31', long 119°30i, in Sw£ sec. 1, T. 23 N., R. 26 E., on east shore 

62 miles upstream from outlet and 9 miles north of town of Soap Lake.

Records available.--July 1936, March 1938 to September 1956 (fragmentary).

Gage.--Staff gage, benchmark or reference point read about two times a week. Datum of 

gage is at mean sea level (Bureau of Reclamation benchmark).

Extremes.--1936. 1938-56: Maximum elevation observed, 1,087.73 ft June 12, 1953; minimum 

observed, 1,076.65 ft Oct. 26, 1940.

Maximum elevation known, 1,092.2 ft (from well-defined alkali line at gage), date 

of occurrence unknown.

Remarks.--Some diversion from tributaries for irrigation, and pumping into and out of

Elevation, In feet, water year October 1955 to September 1956

Day

?.

3

4

6

7

9

10

11

13

14

16

17

18

19

20

21

22

23

24

25

26

27

28

29

3D

31

Oct.

_

80.05

-

.

-

_

-

80.02

_

-

.

80.03

-

-

-

80.04

-

-

80.03

-

_

-

-

_

_

80. 05^

Nov.

_

-

-

80.12

80.04

-

-

_

80.07

-

-

-

-

_

_

-

-

-

_

-

80.06

_

Dec.

_

-

79 84

-

_

-

-

-

-

79.42

-

_

_

-

-

-

_

79.16

_

_

Jan.

_

78.98

-

-

78.86

-

-

_

-

78.79

_

_

_

-

_

_

-

_

-

_

_

_

_

Feb.

_

-

-

78.65

-

_

-

-

78.54

-

«

_

_

78.44

_

_

_

_

-

_

78.34

_

Mar.

_

_

-

78.30

-

_

-

-

78.20

-

78.15

_

_

78.27

-

_

_

_

_

-

78.58

78.67

Apr.

78.81

-

-

-

78.95

78.90

-

_

-

79.02

_

_

_

79.06

_

_

79.08

_

-

_

79.10

_

_

May

_

-

79.14

79.19

_

-

-

_

79.24

_

_

_

-

79.30

_

_

_

-

_

_

79.32

_

June

_

-

79.37

-

_

-

79.39

_

-

_

79.36

_

-

_

_

_

-

79.29

_

_

_

_

July

79.20

-

79.19

-

79.26

-

-

_

-

79.20

_

_

_

-

_

_

79.14

_

-

_

_

_

_

78.97

Aug.

.

-

-

78.90

-

_

-

-

78.86

-

.

_

_

78.83

_

_

_

_

-

_

78.75

_

Sept.

_

-

78.58

-

_

78.66

-

_

-

78.59

_

_

-

_

_

-

78.58

-

_

_

_

Note. Add 

laEeTTov. 11

1,000 ft to obtain elevation above mean sea level. Bureau of Reclamation pumped from 

to Mar. 16.
CRAB CREEK BASIN 307

Soap Lake near Soap Lake, Wash.

Location. Lat 47°23'40", long 119°29'30", in SWir sec. 18, T. 22 N., R. 27 E., on east 

shore 1 mile north of town of Soap Lake.

Records available.--May to August 1936, March 1938 to September 1956 (fragmentary).

Gage. Water-stage recorder. Prior to Feb. 4, 1953, staff gage or reference point at site 

Three-quarters of a mile uplake. Feb. 4, 1953, to June 8, 1954, staff gage at present 

site. All readings have been reduced to elevations above mean sea level.

Extremes. Maximum daily elevation during year, 1,076.53 ft Dec. 27; minimum daily, rrrm.95 ft Mar. 15.

1936, 1938-56: Maximum elevation observed, 1,079.20 ft Jan. 28, 1953; minimum observed, 1,070.87 ft Oct. 21, 1939.

Maximum elevation known, 1,083.1 ft (from well-defined alkali line at gage), date 

of occurrence unknown.

Remarks.--Some diversion from tributaries for irrigation. Water pumped from lake to 

FicTuce or limit high stages.

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

Mean elevation, In feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

75.15

75715

75.17

75.16

75.17

75.18

75.18

75.21

75.22

75.23

75.23

75.24

75.25

75.26

75.28

75.30

75.32

75.34

75.35

75.36

75.38

75.39

75.40

75.41

75.42

75.43

75.44

75.46

75.49

75.51

75.51

Nov.

75.54

75.57

75.59

75.61

75.63

75.64

75.66

75.66

75.67

75.68

75.67

75.66

75.66

75.65

75.66

75.66

75.68

75.72

75.75

75.77

75.79

75.79

75.83

75.86

75.87

75.89

75.91

75.92

75.95

75.98

Dec.

76. OO

76.02

76.03

76.05

76.07

76.09

76.11

76.13

76.15

76.17

76.20

76.23

76.25

76.26

76.27

76.29

76.30

76.31

76.32

76.34

76.37

76.39

76.42

76.45

76.47

76.50

76.53

_

_

-

Jan.

_

_

76.40

_

-

_

.

-

76.24

76.20

76.17

76.14

76.11

76.09

76.10

76.09

76.07

76.04

76. 04

76.03

76.01

75.98

75.96

75.93

75.90

75.87

75.84

75.81

75.78

75.77

Feb.

75.72

_

_

-

75.59

_

_

_

-

_

_

75.38

-

-

_

_

-

_

75.. 21

_

_

_

_

-

_

75.11

_

 

Mar.

_

_

_

_

-

75.04

75.04

75.03

75.02

75.01

74.99

74.99

74.97

74.96

74.95

74.96

74.97

74.99

75.0O

75.O2

75.05

75.07

75.09

75.11

75.12

75.13

75.14

75.15

75.15

75.16

75.17

Apr.

75.18

75.19

75.19

75.18

75.17

75.18

75.19

75.21

75.23

75.23

75.24

75.25

75.26

75.27

75.27

75.27

75.27

75.28

75.29

75.29

75.30

75.30

75.31

75.31

75.31

75.31

75.31

75.31

75.31

75.32

May

75.31

75.31

75.32

75.33

75.33

75.34

75.35

75.37

75.37

75.36

75.35

75.35

75.34

75.35

75.36

75.37

75.37

75.37

75.38

75.37

75.36

75.37

75.37

75.37

75.37

75.37

75.37

75.37

75.36

75.36

75.37

June

75.37

75.36

75.37

75.39

75.37

75.37

75.38

75.39

75.39

75.40

75.41

75.42

75.42

75.42

75.42

75.42

75.42

75.42

75.42

75.41

75.41

75.40

75.40

75.39

75.38

75.39

75.40

75.38

75.37

75.36

July

75.37

75.36

75.38

75.39

75.40

75.40

75.40

75.41

75.42

75.43

75.43

75.43

75.44

75.44

75.44

75.44

75.45

75.46

75.47

75.48

75.50

75.50

75.50

75.50

-

_

_

_

75.38

75.38

Aug.

75.38

75.38

75.38

75.38

75.38

75.38

75.37

75.38

75.38

75.39

75.40

75. 4O

75.41

75.42

75.43

75.42

75.42

75.43

75.45

75.46

75.48

75.48

75.49

75.49

75.49

75. SO

75.51

75.52

75.51

75.50

75.52

Sept.

75.51

75.50

75.50

75.50

75.50

75.51

75.52

75.53

75.56

75.58

75.59

75.59

75.60

75.62

75.64

75.64

75.67

75.71

75.73

75.73

75.72

75.72

75.74

75.76

75.78

75.79

75.80

75.81

75.82

75.83

Note. Add 1,000 ft to obtain elevation above mean sea level. Bureau of Reclamation pumped from 

lake Dec. 27 to Mar. 16.
308 CRAB CREEK BASIN 

Rocky Ford Creek near Ephrata, Wash.

Location. Lat 47°18'20", long 119°26 I 50", In NW^NWi sec. 21, T. 21 N., R. 27 E., on right 

bank l| miles dovmstream from source at Rocky Ford Springs, 5 miles east of Ephrata, 

and 7 miles upstream from mouth.

Drainage area. About 500 sq mi, most of which is noncontributing to surface runoff.

Records available.--June 1909 to April 1910, July to December 1911, August 1942 to September 1956.Prior to January 1910, published as Upper Crab Creek near Ephrata.

Gage.--Water-stage recorder. Datura of gage is 1,064.88 ft above mean sea level (Bureau 

of Reclamation benchmark). Prior to Jan. 1, 1912, staff gages at sites 4j to 5g miles 

dovmstream at different daturns. Aug. 19, 1942, to May 23, 1945, water-stage recorder 

at site 3? miles downstream at datum 5.37 ft lower.

Average discharge. 14 years (1942-56), 76.9 cfs (55,670 acre-ft per year).

Extremes. Maximum discharge during year, 212 cfs Apr. 15-18 (gage height, 3.58 ft); rainimum, 69 cfs Jan. 4 (gage height, 2.10 ft).

1909-11, 1942-56: Maximum discharge, that of Apr. 15-18, 1956; minimum observed, 

20 cfs Aug. 13-18, 1911.

Remarks.--Records good. A few small diversions for domestic use above station, 

regulation by fish hatchery.

Revisions.--WSP 1246: Drainage area.

Slight

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

and discharge. In cubic feet per second) 

(Shifting-control method used Dec. 5 to Feb. 12)

2.0 

2.5 

3.0 

3.6

71

110

156

214,

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

99

99

99

99

99

99

98

99

99

99

99

99

99

99

99

98

98

98

98

99

99

99

99

98

97

96

95

95

94

92

3,038

98.0

6,030

Nov.

92

9?

91

91

90

90

90

89

88

*87

89

87

87

85

85

85

84

84

84

85

85

85

85

84

83

83

82

eS

82

82

2,588

86.3

5,130

Dec.

81soso

79

78

77

77

77

77

77

77

76

76

*77

77

77

77

77

77

77

77

77

77

76

76

75

75

75

74

74

74

2,381

76.8

4,720

Jan.

74

74

74

73

73

73

73

72

7?

72

72

72

72

72

72

72

72

73

74

74

75

76

77

77

78

79

79

81

82

83

*84

2,326

75.0

4,610

Feb.

85

87

89

91

92

95

95

97

99

101

103

105

108

109

109

110

112

113

116

117

120

123

125

128

129

131

133

134

137

3,193

110

6,330

Mar.

140

14?

144

145

149

150

150

151

154

157

160

161

164

167

169

171

172

175

*177

*179

180

181

182

184

186

188

189

191

192

194

196

5,240

169

10,390

Apr.

197

15s

201

202

203

205

206

207

208

*208

210

210

210

211

2lT

211

211

211

208

206

205

204

205

206

206

206

*206

206

206

206

6,190

206

12,280

May

207

20T

207

207

207

206

206

204

203

202

202

201

201

201

201

200

199

198

198

197

196

195

195

194

193

192

*191

190

190

189

188

6,167

199

12,230

June

188

TS7

187

186

185

184

183

182

182

181

180

*180

180

180

180

179

178

178

177

176

176

176

175

174

174

173

173

172

172

171

5,369

179

10,650

July

171

TTT

*170

170

169

169

169

168

168

167

167

167

167

166

165

165

164

164

163

163

163

162

162

162

161

161

161

161

160 TSO160

5,116

165

10,150

Aug.

160

159

159

159

159

158

158

157

157

157

157

156

*156

156

156

155

155

154

154

154

154

154

153

153

153

152

152

152

151

TSI

151

4,812

155

9,540

Sept.

T55" 151

150

149

149

149

148

146

145

145

145

145

144

144

143

144

144

144

143

142

142

141

*141

140

158

138

139

140

140

139

4,318

144

8,560

Calendar year 1955: Max 108 Min 71 Mean 90.0 Ac-ft 65,160

Water year 1955-56: Max 211 Min 72 Mean 139 Ac-ft 100,600

* Discharge measurements made on this day.

Note. No gage-height record Feb. 15 to Mar. 6; discharge estimated on basis of recorded range 

in stage.
CRAB CREEK BASIN 309

Moses Lake at Moses Lake, Wash.

Location. La t 47°06 I 00", long 119° 19'20", in NWi sec. 33, T. 19 N., R. 28 E., on east

 shore 100 ft north of U. S. Highway 10, If miles upstream from outlet, and 2 miles 

southwest of town of Moses Lake.

Drainage area. 2,970 sq mi, approximately.

Records available. June 1909 to September 1914, November 1936 to September 1945 (frag-

 mentary), October 1945 to September 1956. Published as "at Neppel" 1912-14.

Gage. Water-stage recorder. Datum of gage is at mean sea level (Bureau of Reclamation

 benchmark). Prior to Apr. 3, 1910, staff gage at site 1 mile northeast at different 

datum. Apr. 3, 1910, to Sept. 30, 1914, and Nov. 19, 1936, to Nov. 24, 1944, staff 

gages at site 3£ miles northeast at Parker Horn at various datums. Oct. 30, 1945, to 

Mar. 14, 1955, water-stage recorder at site near west shore on downstream side of bridge 

on U. S. Highway 10 at same datum.

Extremes. Maximum elevation during year, 1,048.07 ft Mar. 7; minimum recorded, 1,044.31 

ft Jan.3,4.

1909-14, 1936-56: Maximum elevation, 1,048.29 ft Mar. 10, 1950; minimum observed, 

1,038.17 ft Aug. 27, 1910.

Remarks. Elevation controlled by dam at lake outlet. Many small diversions for irrigaMean elevation. In feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

46.64

46.66

46.63

46.60

46.58

46.55

46.52

46.47

46.48

46.47

46.44

46.43

46.41

46.39

46.37

46.36

46.35

46.33

46.32

46.31

46.30

46.28

46.27

46.25

46.22

46.21

46.18

46.17

46.16

46.14

46.12

Nov.

46.11

46.10

46.11

46.14

46.17

46.18

46.19

46.20

46.21

46.22

46.25

46.21

46.17

46.13

46.11

46.09

46.08

46.07

46.08

46.06

45.97

45.87

45.79

45.71

45.63

45.56

45.48

45.40

45.32

45.26

Dec.

45.20

45.13

45.07

45.00

44.93

44.89

44.83

44.77

44.72

44.67

44.63

44.60

44.56

44.55

44.53

44.52

44.51

44.50

44.49

44.48

44.47

44.45

44.44

44.43

44.42

44.41

44.40

44.39

44.37

44.36

44.35

Jan.

44.33

44.32

44.32

44.34

44.66

44.85

44.90

44.97

45.07

45.31

45.52

45.64

45.74

45.79

45.86

45.88

45.88

45.88

45.88

45.88

45.87

45.87

45.85

45.85

45.84

45.83

45.81

45.79

45.77

45.75

45.73

Feb.

45.69

45.64

45.58

45.52

45.46

45.38

45.34

45.31

45.26

45.22

45.18

45.13

45.10

45.07

45.02

44.99

44.97

44.95

44.92

44.88

44.89

45.27

45.52

45.49

45.40

45.45

45.73

45.94

46.14

Mar.

46.24

46.24

46.40

46.80

47.31

47.77

48.02

47.97

47.72

47.38

47.04

46.72

46.43

46. 18

45.97

45.79

45.62

45.49

45.37

45.30

45.28

45.28

45.30

45.36

45.43

45.53

45.62

45.70

45.75

45.73

45.72

Apr.

45.69

45.64

45.58

45.50

45.41

45.32

45.24

45.15

45.08

45.02

44.94

44.84

44.78

44.72

44.64

44.59

44.57

44.68

44.80

44.93

45.05

45.15

45.27

45.37

45.46

45.55

45.64

45.71

45.79

45.87

May

45.94

46.04

46.13

46.22

46.31

46.46

46.51

46.59

46.66

46.67

4'6.66

46.66

46.65

46.64

46.63

46.62

46.60

46.58

46.57

46.56

46.53

46.51

46.48

46.46

46.43

46.42

46.40

46.37

46.35

46.32

46.29

June

46.26

46.23

46.20

46.18

46.16

46.14

46.15

46.15

46.16

46.18

46.18

46.18

46.18

46.17

46.19

46.18

46.17

46.17

46.17

46.16

46.14

46.13

46.12

46.11

46.08

46.07

46.07

46.07

46.03

46.00

July

45.98

45.97

45.98

45.99

45.98

45.98

45.98

45.97

45.97

45.95

45.93

45.91

45.89

45.88

45.87

45.86

45.85

45.84

45.82

45.80

45.78

45.77

45.76

45.76

45.76

45.75

45.76

45.76

45.77

45.77

45.78

Aug.

45.77

45.78

45.79

45.81

45.83

45.87

45.92

45.96

46.01

46.06

46.09

46.13

46.17

46.22

46.25

46.28

46.32

46.35

46.39

46.43

46.47

46.51

46.57

46.60

46.64

46.66

46.66

46.63

46.59

46.54

46.50

Sept.

46.48

46.43

46.40

46.38

46.34

46.32

46.29

46. 2e

46.24

46.22

46.19

46.17

46.16

46.14

46.13

46.11

46.09

46.08

46.07

46.05

46.02

45.99

45.98

45.98

45.98

45.98

45.97

45.96

45.94

Note. Add 1,000 ft to obtain elevation above mean sea level. No gage-height record Dec. 14 to 

Jan. 2, Jan. 26-30, Feb. 2; elevations estimated from reconstructed graph.
310 CRAB CREEK BASIN

Crab Creek near Warden, Wash.

Location. Lat 46°57'00", long 119 "15'20", in SW^NW£ sec. 24, T. 17 N., R. 28 E., on left 

bank 0.5 mile upstream from Goose Lake, 2£ miles downstream from 0'Sullivan Dam, 

5 miles northwest of Othello, and 12 miles south of Warden. Prior to Sept. 1, 1955, at 

site 2 miles upstream.

Drainage area.--About 4,150 sq mi, of which 500 sq mi in the vicinity of Soap Lake is 

probably noncontributing.

Records available.--June to December 1909, March to December 1910, February to December 

1911, February to June 1912, October 1942 to September 1952, October 1955 to September 

1956. Published as Lower Crab Creek near Warden 1909-12. Records for September 1952 

to September 1955 at site 2 miles upstream not equivalent owing to seepage bypassing 

gage.

Page. Water-stage recorder and rock and culvert control. Altitude of gage is 880 ft 

(from topographic map). Prior to June 27, 1912, staff gages at several sites within 

3 miles of present station at various datums. October 1942 to September 1950, waterstage recorder at site 1.6 miles upstream at different datum. October 1950 to September 1952, water-stage recorder at site 2 miles upstream at different datum.

Extremes.--Maximum discharge during year, 37 cfs Feb. 21 (gage height, 1.24 ft); minimum 

daily, 29 cfs Oct. 1 to Nov. 3, Nov. 14, 16, 27, Dec. 14; minimum gage height, 0.84 ft 

Nov. 2.

1909-12, 1942-52, 1955-56: Maximum discharge, 3,000 cfs Feb. 7, 1943 (gage height, 

4.25 ft, site and datum then in use), from rating curve extended above 20 cfs on basis 

of slope-area measurement of flood in Lind Coulee; no flow for short intervals in 

June and July 1948, and part of each day Feb. 2-21, 1952, when water was shut off at 

0'Sullivan Dam.

Remarks. Records good. Many diversions for irrigation. Flow regulated by 0'Sullivan 

DamT Storage began in Potholes Reservoir above 0'Sullivan Dam in September 1952. Discharge between September 1952 and September 1955 consisted of a small part of dam 

seepage. Discharge at present location includes essentially all of the seepage.

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

*29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

899

29.0

1,780

Nov.

29

29

29

so- 30

so

30

30

30

*30

30

30

30

29

30

29

3O

30

30

30

30

30

30

30

30

30

29

30

30

30

894

29.8

1,770

Dec.

30

30

30

30

30

30

30

30

30

30

30

30

30

*29soso

30

30

30

30

31

31

31

30

30

30

30

30

30

30

30

932

30.1

1.850

Jan.

30

30

31

30

31

31

31

31

30

30

30

31

31

31

31

31

31

31

31

31

31

31

31

30

30

30

30

30

30

*30

30

947

30.5

1,880

Feb.

-So 30

30

3O

30

30

31

31

31

31

31

31

32

32

32

32

32

32

32

32

36

36

35

35

35

35

35

*35

35

939

32.4

1,860

Mar.

15

35

35

34

34

34

34

34

34

34

33

33

33

33

33

33

33

*33

33

33

33

33

33

33

33

33

33

33

33

33

33

1,036

33.4

2,050

Apr.

33

33

33

33

33

33

33

33

33

33

32

3T

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

*32

32

32

970

32.3

1,920

May

32

32

32

32

32

32

32

32

31

31

31

31

31

31

31

31

31

31

31

31

31

31

31

31

31

31

*31

30

30

31

31

967

31.2

1,920

June

31

31

31

31

31

31

31

31

31

31

31

31

31

31

32.

31

31

31

31

31

31

31

31

31

31

31

31

31

31

31

931

31.0

1,850

July

31

*31

31

31

31

31

31

31

31

31

31

31

31

31

31

31

31

31

31

32.

32

31

31

31

31

31

31

31

31

31

31

963

31.1

1,910

Aug.

31

31

31

31

31

31

31

31

31

 31

31

31

31

*31

31

31

31

31

31

31

31

31

31

31

31

32

3T

32

31

31

32

965

31.1

1,910

Sept.

31

32

3?

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

*32

32

32

32

32

32

32

32

32

959

32.0

1,900

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 36 Mln 29 Mean 31.2 Ac-ft 22,600

* Discharge measurement made on this day.

Note. No gage-height record Oct. 2 to Nov. 1, Nov. 3-9, 11-13, Dec. 25-27, Jan. 13-15, 20-22, 

June 3, 4; discharge estimated on basis of weather records.
CRAB CREEK BASIN 311

Crab Creek near Smyrna, Wash.

Location. La t 46°50i35", long 119° 36' 25" , In Sfi£ sec. 30, T. 16 N., R. 26 E., on-left 

bank at highway bridge, 2j miles east of Smyrna and 17 miles upstream from mouth.

Drainage area. About 4,500 sq mi, of which about 500 sq mi in the vicinity of Soap Lake 

is probably noncontributing.

Records available. August 1942 to September 1956.

Gage. Water-stage recorder. Datum of gage is 530.83 ft above mean sea level (Bureau of 

Keclamation benchmark).

Extremes. Maximum discharge during year, 134 cfs Feb. 23 (gage height, 3.46 ft); minimum, 13 cfs Nov. 12 (gage height, 1.32 ft).

1942-56: Maximum discharge, 3,300 cfs Feb. 8, 1943 (gage height, 7.5 ft, estimated 

by observer), from rating curve extended above 1,000 cfs; possibly no flow at times 

during summer of 1947.

Remarks.--Records good. Many diversions above station for irrigation. Flow is entirely 

regulated in Potholes Reservoir by 0'Sullivan Dam. Flow by station is essentially 

seepage from Potholes Reservoir and return flow from part of the Columbia Basin 

project.

Revisions.--WSP 1216: Drainage area.

Rating table, water year 1955-56, except periods of lee effect 

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

1.4 

1.7 

2.0

14

21

31

2.5 

3.0 

3.5

51

83

140

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

Day

1

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

*50

49

48

15

48

48

48

49

52

52

52

51

51

52

52

50

51

52

53

54

55

56

57

56

53

51

49

48

50

50

50

1,585

51.1

3,140

Nov.

48

48

51

50

48

47

47

46

46

*45

47

33

24

20

b!9

b20

21

22

24

26

29

31

31

36

57

68

58

53

52

52

1,199

40.0

2,380

Dec.

52

52

52

51

51

46

54

52

53

52

52

62

»52

37

26

28

38

41

36

35

37

70

72" 98

61

59

57

52

46

38

34

1,546

49.9

3,070

Jan.

29

27

33

49

81

86

72

61

56

54

54

52

54

52

56

66

70

64

60

60

62

63

60

56

52

45

40

41

43

*45

b33

1,676

54.1

3,320

Feb.

b25 b2B~

b27

b30

b33

b36

b37

b38

b40

43

46

52

60

60

52

42

32

34

36

40

58

97

102

TS

64

63

60

61

66

1,433

49.4

2,840

Mar.

58

57

52

51

48

48

45

49

50

50

48

49

49

48

48

47

46

*46

44

45

45

46

45

45

44

44

44

43

fS

43

43

1,463

47.2

2,900

Apr.

42

41

41

40

40

41

40

40

40

40

40

39

40

38

40

42

46

49

52

5U

45

43

42

38

37

37

32

*22

18

T5

1,174

39.1

2,330

May

21

26

28

40

44

47

4T

42

38

35

37

38

37

36

32

26

27

33

29

26

29

32

35

37

38

*39

39

41

41

41

41

1,100

35.5

2,180

June

40

41

43

48

49

47

46

46

45

45

45

45

43

45

45

45

45

45

45

39

35

35

34

34

35

35

35

33

30

27_

1,225

40.8

2,430

July

30 *3T

36

36

37

37

39

39

38

37

37

39

40

41

To

39

40

41

41

40

41

41

41

41

40

39

39

39

39

39

38

1,198

38.6

2,380

Aug.

39

41

41

41

41

40

40

40

39

39

38

38

37

*32

29

28

29

29

30

30

28

18.5

14.5

20

24

33

37

37

41

42

1,034.0

33.4

2,050

Sept.

41

42

43

43

43

45

4T

43

42

42

41

42

42

42

40

39

15

41

41

39

40

*43

44

45

44

43

42

44

45

42

1,268

42.3

2,520

Calendar year 1955: Max 98 Mln 13.5 Mean 35.7 Ac-ft 25,830

Water year 1955-56: Max 102 Mln 14.5 Mean 43.4 Ac-ft 31,540

* Discharge measurement made- on this day. 

b Stage-discharge relation affected by Ice.
312 YAKIMA RIVER BASIN

., R. HE., on left 

miles northwest of

Yakima River near Martin, Wash.

Location. Lat 47°19'10", long 121°20'10", In NE£ sec. 12, T. 21 Ij

bank 800 ft downstream from dam at outlet of Keechelus Lake, 3=

Martin, and 9i miles northwest of Easton. 

Drainage area.--55.8 sq mi.

Records available.--October 1903 to September 1956. 

Gage. Water-stage recorder and masonry channel. Datum of gage is 2,422.40 ft above mean

sea level (Bureau of Reclamation benchmark). Prior to July 20, 1923, staff gages at

several sites within 2 miles of present site at various datums. 

Average discharge.--53 years (1903-56), 331 cfs (239,600 acre-ft per year), adjusted for

storage since January 1906. 

Extremes.--Maximum discharge during year, 1,240 cfs Aug. 12, 13; maximum gage height,

8.33 ft Aug. 12; minimum discharge, 1.5 cfs Oct. 18 (gage height, 2.14 ft).

1903-56: Maximum discharge, 7,370 cfs Mar. 26, 1915, when temporary crib dam was

washed out; practically no flow when gates in Keechelus Lake Dam are closed. 

Remarks. Records good. Flow regulated by Keechelus Lake (see p. 327). Keechelus Lake

spillway discharge, computed from reservoir elevations and spillway rating, bypasses

gage and is added to flow at station. No diversion. 

Cooperation. Gage-height record, 10 discharge measurements, and computations of daily

discharge furnished by Bureau of Reclamation; 2 discharge measurements made and records reviewed by Geological Survey. 

Revisions (water years). WSP 1216: Drainage area. WSP 1286: 1910.

Rating tables, water year 1955-56, except period of combined flow at gage and over 

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

Oct. 1 to Nov. 14 14 to Sept. 30

2.1

2.2

2.3 

2.5 

2.9

1.0

2.6

5.0

12

34

3.4 

4.0 

5.0 

6.O 

7.1

141

285

500

800

2.3

2.4 

2.6 

3.0 

3.5

6.2 

9.4

18

42

147 

3OO 

5OO 

760 

1,270

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

653

656

656

719

749

749

782

746

713

570

322

225

98

3.8

2.8

2.4

2.2

2.0

*4.8

9.2

9.2

9.2

9.2

135

195

44

9.6

10

13 

13

12

8,124.4

262

16,110

+13.42O

Nov.

11.5

11.5

12

15.5

14

13

*15

13

14

16.5

15.5

14

14

145

252

298

302

346

388

394

456

5OO

556

595

595

595

595

595

628 

645

8,062.5

269

15,990

+20,870

Dec.

645

67O

706

703

703

703

739

763

760

763

775

583

300

612

787

775

769

766

766

769

587

128

133

481

706

7O9

706

*76O

799 

796

799

20,661

666

40,980

-15,540

Jan.

799

799

790

766

730

748

772

769

766

*545

394

286

222

219

218

218

219

219

219

189

175

175

175

175

157

147

14?

148

147 

147

147

11,627

375

23,060

-13,4OO

Feb.

147

147

147

148

148

108

*86

86

85

85

85

85

86

162

204

204

204

204

204

204

204

204

204

204

204

204

2O4

204

204

4,665

161

9,250

-2,650

Mar.

204

264

300

3OO

300

300

300

298

359

598

396

394

*392

394

394

394

394

394

394

394

394

394

394

153

145

268

344

574

576 

376

376

10,555

340

2O,94O

-12,150

Apr.

574

574

574

576

576

574

576

376

*327

500

502

119

7.4

7.4

7.4

7.4

7.4

155

257

95

8.4

8.7

8.7

8.7

95

240

289

504

500

156

5,988.5

200

11,880

+19,970

May

10

22

585

500

5OO

502

357

396

596

596

596

489

548

655

*705

526

220

14

14

14

14

14

14.5

15

15

15

15

14.5

144 

220

222

7,124.0

250

14,130

+65,55O

June

222

292

358

386

595

70O

811

964

998

998

998

998

995

956

928

928

925

866

824

*824

820

820

82O

820

694

514

456

458

458 

456

21,86O

729

45,560

+19,65O

July

6461

e591

e756

6762

6745

6776

6798

6817

6940

el,08O

1,110

1,11O

1,O5O

925

922

928

928

974

*1,070

1,120

1,110

1,OOO

9OO

1,110

1,110

1,110

1,110

1,170

1.190 

1,190

1,190

50,O55

969

59,570

-25,770

Aug.

1,190

1,190

1,250

1,250

1,250

1,250

1,250

1,230

1,230

1,250

1,25O

1,250

1.240

1,25O

1,230

*1,230

1,230

1,200

1,17O

1,09O

1,03O

952

858

799

724

632

556

585

283 

263

263

31,065

1,OO2

61,610

-55,190

Sept.

285

285

285

283

29O

285

"S85 280

286

285

286

283

285

285

285

285

*285

283

283

285

285

285

285

283

285

285

283

283

288 

290

8,55O

284

16,920

-11,95O

Adjusted for change in contents in Keechelus Lake

Mean

Of sm

In.

Ac-ft

48O

8.6O

9.92

29,530

619

11.1

12.59

56,860

414

7.42

8.55

25,44O

157

2.81

3.25

9,66O

115

2.O6

2.22

S,6OO

143

2.56

2.95

8,79O

555

9.59

1O.7O

51,850

1,265

22.6

26. 1O

77,680

1,059

 19. 0

21.17

65,O1O

550

9.86

11.56

53,8OO

1O4

1.86

2.16

6,420

83.9

1.50

1.68

4,990

Calenc 

Water

iar year 1955 : 

year 1955-56 :

Max 

Max

1,500 

1,240

Min 

Mln

2. 

2.

O 

O

Mean 

Mean

402 

460

Ac-ft 

Ac-ft

291 

535

,100 

,8OO

Adjusted

Calenc 

Water

Iar year 1955 : 

year 1955-56:

Mean 

Mean

410 

461

Cf sm 

Cf sm

7 

8

.55 

.26

In. 

In.

99.77 

112.45

Ac-ft 

Ac-ft

296 

554

,90O 

,600

* Discharge measurement made on this day.

t Change in contents in Keechelus Lake, in acre-feet.

e Combined flow at gage and over spillway.
YAKIMA RIVER BASIN 313

Kachess River near Easton, Wash.

Location.--Lat 47°15 T 30", long 121°11 T 50", in NE£ sec. 3, T. 20 N., R. 13 E., on left bank 

three-quarters of a mile downstream from Kachess Lake and 2 miles northwest of Easton.

Drainage area.--63.6 sq mi.

Records available. October 1903 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 2,188.10 ft above mean sea level (Bureau of 

Reclamation benchmark): Prior to July 22, 1913, staff gage and July 22, 1913, to 

Aug. 14, 1916, water-stage recorder, at site a quarter of a mile upstream at different 

datum. Aug. 15, 1916, to Oct. 8, 1927, water-stage recorder at site half a mile downstream at different datum. Oct. 9, 1937, to Sept. 30, 1951, staff gage and water-stage 

recorder at present site at datum 1.33 ft higher.

Average discharge.--53 years, 288 cfs (208,500 acre-ft per year), adjusted for storage 

since October 1905.

Extremes.--Maximum discharge during year. 1,050 cfs June 8 (gage height, 6.17 ft); minimum,

 0.5 cfs Oct. 17 (gage height, 1.28 ft).

1903-56: Maximum discharge, 2,530 cfs May 28, 1948 (gage height, 8.45 ft, present 

datum); no flow at times when gates in dam are closed.

Remarks.--Records excellent except those below 20 cfs, which are fair. No diversion. Plow 

regulated by Kachess Lake (see p. 327).

Cooperation.--Gage-height record, 10 discharge measurements, and computations of daily discharge furnished by Bureau of Reclamation; 2 discharge measurements made and records 

reviewed by Geological Survey.

Revisions (water years).--WSP 369: 1904, 1907-8. WSP 1216: Drainage area.

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

in cubic feet per second)

1.3

1.4

1.5 

1.7 

2.0 

2.4 

3.0

0.6

1.4

2.5

6.0

15

33

3.5 

4.0 

4.5 

5.0 

6.1

133

224

364

544

1,020

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

Day

1

2

3

4

5

6

1

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

~96 106

96

58

3.2

3.2

3.2

3.7

4.0

3.1

1.0

.9

.8

.8

.7

.6

*7S

.6

.6

.6

.7

.8

.8

1.3

1.5

1.2

1.2

1.8

5.0

5.6

3.4

406.9

13.1

807

+19,670

Nov.

3.0

2.6

372

6.8

5.8

4.2

*3.7

3.7

4.4 

7.2

6.0

4.0

3.4

134

295

364

361

413

444

444

497

528

588

632

632

632

632

632

676

700

8,662.0

289

17,180

+19,620

Dec.

700

696

692

688

688

684

740

767

767 

767

772

538

390

532

532

528

528

524

548

*680

567

147

147

450

668

664

664

749

803

852

£i93_

19,365

625

38,410

-14,950

Jan.

888

884

880

942

985

978

974

£70

965 

*693

560

355

232

232

232

232

232

232

232

232

232

232

232

232

200

1?9

177

177

175

173

TTS

14,110

455

27,990

-17,390

Feb.

171

T7T

171

171

171

171

*171

171

212 

244

244

244

242

242

242

242

242

242

242

242

242

242

242

242

239

239

239

239

239

6,411

221

12,720

-5,370

Mar.

239

242

242

239

239

239

239

239

295 

328

328

343

*378

378

310

430

430

430

427

427

427

424

424

143

148

301

430

476

476

476

476

10,623

343

21,070

-11,760

Apr.

472

472

472

469

469

410

378

382

*277 

226

226

81

9.4

10~7F

12

10.5

9.7

9.4

10

10.5

11.5

14.5

13

12

11

11.5

11.5

11

11.5

11

4,534.5

151

8,990

+26,520

May

23 10.5

382

254

254

254

254

262

259 

259

259

343

399

480

*540

476

392

154

35

35

34

34

143

102

130

296

340

346

430

483

512

8,174.5

264

16,210

+61,840

June

536

668

740

816

920

947

938

983

1.010 

1,000

992

974

920

888

888

884

826

672

608

*544

490

497

497

497

500

402

352

555

361

364

21,069

702

41,790

+9,380

July

364

462

632

704

704

704

700

696

696 

696

692

744

772

767

754

744

731

*749

740

713

708

708

708

708

704

704

656

624

624

624

624

21,156

682

41,960

-17,720

Aug.

624

624

624

620

620

616

616

596

584 

584

584

584

580

580

*576

576

576

576

572

572

572

592

616

656

704

704

708

704

754

785

TcT *b f

19,446

627

38,570

-35,140

Sept.

749

749

749

744

704

684

684

684

680 

676

676

648

604

560

544

544

544

*544

544

544

544

544

544

536

528

516

516

516

516

512

18,127

604

35,950

-33,040

Adjusted for change in contents in Kachess Lake

Mean

Cfsm

In.

Ac-ft

333

5.24

6.04

20,480

618

9.72

10.85

36,800

382

6.01

6.92

23,460

172

2.70

3.12

10,600

128

2.01

2.17

7,350

151

2.37

2.74

9,310

597

9.39

10.47

35,510

1,269

20.0

23.01

78,050

860

13.5

15.09

51,170

394

6.19

7.15

24,240

55.8

0.877

1.01

3,430

48.9

0.769

0.86

2,910

Calendar ye 

Water year

ar 1955: 

1955-56:

Max 

Max

1,550 

1,010

Min 

Min

0. 

0.

6 

6

Mean 

Mean

374 

416

Ac-ft 

Ac -ft

270 

301

,400 

,600

Adjusted

Calendar ye 

Water year

ar 1955: 

1955-56:

Mean 

Mean

358 

418

Cfsm 

Cfsm

5 

6

.63 

.57

In. 

In.

76.37 

89.43

Ac-ft 

Ac-ft

259 

303

,000 

,300

* Discharge measurement made on this day.

t Change in contents in Kachess Lake, in acre-feet.
314 YAKIMA RIVER BASIN

Cle Elum River near Roslyn, Wash.

Location. Lat 47°14'30", long 121 "03'50", in NW^ sec. 11, T. 20 N., R. 14 E., on left

 bank 1,000 ft downstream from dam at Cle Elum Lake and 4 miles northwest of Roslyn.

Drainage area. 803 sq mi.

Records available. October 1903 to September 1956.

gage. Water-stage recorder. Datum of gage is 2,102.10 ft above mean sea level (Bureau of

 Reclamation benchmark). Prior to Oct. 14, 1913, and Sept. 4, 1931, to Apr. 19, 1933 

several staff gages and Oct. 14, 1913, to Sept. 3, 1931, water-stage recorder, at about 

same sites at same datum.

Average discharge. 53 years, 918 cfs (664,600 acre-ft per year), adjusted for storage 

since 1906.

Extremes. Maximum discharge during year, 3,630 cfs June 23 (gage height, 9.26 ft); minimum, 5.7 cfs Oct. 27 (gage height, 3.89 ft).

1903-56: Maximum discharge, 18,700 cfs Nov. 15, 1906 (gage height, 14.05 ft); no 

flow at times when gates in dam are closed.

Remarks. Records good. No diversion above station. Plow regulated by Cle Elum Lake 

(see p. 327).

Cooperation. Gage-height record, 10 discharge measurements, and computations of daily 

discharge furnished by Bureau of Reclamation; 3 discharge measurements made and records 

reviewed by Geological Survey.

Revlsions (water years). WSP 369: 1906-8. WSP 1216: Drainage area. WSP 1286: 1908-9. 

WSP 1316:1904.WSP 1396: 1943, 1953.

Rating table, water year 1955-56 (gage height, In feet, and discharge.

In cubic feet per second) 

(Shifting-control method used Hay 12 to June 3)

4.2

4.3 

4.5 

4.7 

5.0

36

53

97

160

265

5.5 

6.O 

7.0 

8.0 

9.3

475

725

1,370

2,230

3,680

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

Day

1 

2

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

(t)

Oct.

576" 882 

882

S34

681

630

708

708

635

545

367 

181

178

109

106

106

106 

106

 109

115

115

115

112

112

106

127

70

51

5T

51 

51

9,825

317

19,490

+28 , 180

Nov.

51

51

51

51

50

50

48

*48

48

46

§

46

90

234

309

309 

479

605

605

742

918

1,010

J.,070

1,070

1,080

1,070

1,160

1,200

1,200

13,778

459

27,330

+71,480

Dec.

1,200 

1,190

1,190

1,200

1,200

1,190

1,240

1,300

1,290

1,290

1,300 

850

269

7TT

 1,010

1,150

1,230 

1,260

1,260

1,240

1,220

1,220

1,230

1,220

1,220

1,220

1,210

1,290

1,360

1,470 

1.560

36,790

1,187

72,970

-16,660

Jan.

1,560 

1,560

1,550

1,670

1,710

1,690

1,690

1,680

1,670

1,190

 954 

742

625

625

625

625

620 

620

565

520

520

520

520

520

516

516

511

511

511

511 

506

28,153

908

55,340

-32,030

Feb.

506 

506

502

502

502

5"70~ 498

 630

698

752

747 

747

747

747

742

736

736 

736

736

730

786

846

840

840

834

828

822

322

816

 

20,504

707

40,670

-27,800

Mar.

816 

816

816

904

904

798

973" 792

1,220

1,210

1,200

1,310

1,330

 1,390

1,640

1,890

1.960 

1,956

1,940

1,930

1,910

1,910

1,900

1,050

840

316

1,060

1,530

1,710

1,700 

1,690

41,905

1,352

83,120

-63,390

Apr.

1,680 

1,670

1,670

1,660

1,660

1,650

1,640

1,630

1,400

 1.290

1,280 

1,280

1,120

551

206

202

415 

692

780

397

134

-ilS T3ff

130

374

720

852

864

870

1,050

28,127

938

55,790

+50,660

May

1,160 

1,170

1,240

1,300

1,310

1,310

1,430

1,480

1,520

850

649 

1,030

1,100

1,110

662

 1,150

810 

462

 55$ 353

353

718

1,170

1,420

 1,450

1,500

1,570

1,810

2,040"

2,110 

2,140

36,730

1,185

72,850

+179,270

June

ffi 2,750

2,780

2,980

3,070

3,120

3,220

3,280

3,320

3,360 

3,330

3,390

3,460

3,500

3,500

3,540 

5,580

3,550

3,550

 3,520

3,540

3,560

3,560

3,320

2,890

2,380

2,240

2,250

2,170

93,270

3,109

185,000

+5,430

July

2.25O

2,120

1,900

1,760

1,690

1,460

1,340

1,360

1,330

1,250

1.040 

1,060

1,130

1,340

1,700

1,990

2,210 

2,410

2,420

 2,580

2,640

2,630

1,280

1,420

1,970

2,030

2,040

2,280

2,220

2,230 

2,230

57,290

1,848

113,600

+800

Aug.

2,230 

2,230

2,220

2,220

2,220

2,230

2,230

2,230

2,230

2,220

2,230 

2,230

2,210

2,210

 2,220

2,210

2,230 

2,220

2,210

2,270

2,320

2,320

2,310

2,350

2.410

2,390

2,400

2,370

2,210

2,040 

2,030

69,650

2,247

138,100

-307,370

Sept.

2,010 

2,030

2,630

2,020

2,010

2,000

1,990

1,960

1,970

1,990

1,930

1,710

1,590

1,510

1,470

1,470

1,450 

1,440

1,450

1,450

1,450

1,450

1,440

1,430

 1,450

1,450

1,430

1,410

1,390

1,160

49,540

1,651

98,260

-81,150

Adjusted for change In contents In Cle Elum Lake

Mean

Cfsm

775

3.82

4.40

47,670

1,661

8.18

9.13

98,810

916

4.51

5.20

56,310

387

1.91

2.20

23,810

224

1.10

1.19

12,870

321

1.58

1.82

19,730

1,788

8.81

9.83

106,400

4,100

20.2

23.29

252.100

3,200

15.8

17.59

109,400

1,861

9.17

10.57

114,400

500

2.84

30,730

288

1.42

1.58

17,110

Calendar year 1955: 

Water year 1955-56:

Max 

Max

6,600 

3,580

Mln

Mln

43 

43

Mean 

Mean

1 

1

,091 

,327

Ac-ft 

Ac-ft

789 

963

,800 

,000

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean

Mean

1,097 

1,337

Cfsm 

Cfsm

5, 

6,

.40 

.59

In. 

In.

73 

89

.32 

.64

Ac-ft 

Ac-ft

793 

970

,800 

,300

 Discharge measurement made on this day. 

t Change In contents In Cle Elum Lake, In aicre-feet.
YAKIMA RIVER BASIN 315

Yakima River at Cle Elum, Wash.

Location. Lat 47°11'20", long 120°56'40", in sec. 27, T. 20 N., R. 15 E., on left bank at

 highway bridge at Cle Elum just upstream from Roslyn Creek, 7 miles upstream from Teanaway River.

Drainage area. 500 sq mi, approximately.

Records available.--August 1906 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,902.27 ft above mean sea level (levels by

"Bureau of Reclamation). Prior to Aug. 12, 1910, chain gage on highway bridge at different datum. Aug. 12, 1910, to July 11, 1911, staff gage; July 12, 1911, to June 27, 

1923, water-stage recorder; June 28, 1923, to Oct. 21, 1924, staff gages; all at various 

locations within vicinity of bridge at datum 2.0 ft (corrected) higher.

Average discharge.--50 years, 1,987 cfs (1,439,000 acre-ft per year), adjusted for storage 

since October 1906 and Kittitas Canal diversion since 1930.

Extremes. Maximum discharge during year, 5,740 cfs June 11 (gage height, 9.28 ft); mini-

 mum, 360 cfs Oct. 25 (gage height, 5.40 ft).

1906-56: Maximum discharge, 25,600 cfs Nov. 14, 1906 (gage height, 12.5 ft, from 

floodmarks); minimum, 46 cfs Nov. 17, 1953.

Remarks. Records good. Kittitas high-line canal diverts water from river at Easton for 

Irrigation below station. Several smaller diversions for irrigation of several hundred 

acres above station. Considerable regulation by Keechelus, Kachess, and Cle Elum Lakes 

(see p. 327). Records of chemical analyses and water temperatures for the water year 

1956 are given in WSP 1453.

Cooperation. Gage-height record collected in cooperation with, and nine discharge measurements furnished by Bureau of Reclamation.

Revisions (water years) . WSP 369: 1910-11. WSP 832: 1936.

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

in cubic feet per second)

Oct. 1 to Dec. 11 Dec . 12 to Sept. 3O

5.4 360

5.7 660

6.0 920

6.5 1,380

7.0 1,940

8.0 3,400

9.0 5,440

6.2 900

6.5 1,210

7.0 1,780

8.0 

9.3

3,180

5,780

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

L*» M

Oct.

1,270

1,280

1,290

1,260 

1,230

1,020

1,140

1,210

1,410

1,360

1,120

848

786

741

732

831

*777

705

620

530

49O

440

430

420

410

430

610

550

840

1,430

1,550

27,760

895

55,060

11,460

+61,270

Nov.

1,120

669

705

1,190 

1,590

1,350

1,130

*1,300

1,370

2,330

2,460

1,720

1,400

1,270

1,400

1,490

1,540

1,720

1,980

1,980

2,050 

2,350

2,470

2,690

2,780

3,000

2,930

2,900

2,930

5,040

56,854

1,895

112,800

0

HI 2, 000

Dec.

3,030

3,000

3,010

3,010 

3,010

3,010

3,040

3,200

3,190

3,200

3,580

*4,580

2,770

2,580

3,080

3,120

3,120

3,070

3,020

3,040

3,130 

2,640

2,320

2,220

2,750

3,040

3,020

3,070

3,260

3,380

3,540

94,830

3,059

188,100

0

-47,150

Jan.

3,540

3,520

3,520

3,650 

5,750

3,700

3,740

3,700

3,640

3,210

*2,300

2,020

1,640

1,540

1,470

1,420

1,380

1,380

1,320

1,240

1,210 

1,180

1,170

1,160

1,130

1,060

1,040

1,030

1,010 

990

970

63,630

2,053

126,200

0

-62,820

Feb.

980

990

990

990 

1,000

980

1,000

*1,070

1,140

1,260

1,310

1,400

*1,380

1,350

1,350

1,380

1,410

1,390

1,380

1,350

1,400 

1,460

1,460

1,460

1,450

1,440

1,440

1,440

1,440

37,090

1,279

73,570

0

-35,820

Mar.

1.540

1,640

1,650

1,640 

1,600

1,560

1,580

1,670

1,950

2,020

2,060

2,120

2,190

*2,300

2,540

2,800

2,940

2,980

2,990

3,000

3,000 

3,020

3,050

2,420

1,610

1,780

2,080

2,690

2,940 

3,040

5,070

71,470

2,305

141,800

0

-87.300

Apr.

3,070

3,020

3,080

5,290 

3,260

3,130

3,020

5,070

2,940

2,720

2,860

*5,020

2,980

2,450

2,210

2,160

2,120

2,290

2,510

2,260

2,570 

5,000

2,720

*2,600

2,440

2,880

5,210

5,080

5,210

5,130

84,080

2,803

166,800

1,040

+97,150

May

5,230

2,960

2,460

2,400 

2^900

2,880

5,020

5,470

5,940

5,570

2,900

2,990

5,050

5,020

5,100

*5,740

5,610

5,480

5,540

5,590

2,980 

2,820

5,560

*5,680

5,220

5,290

5,250

5,120

5,320

5,940

4,540

101,550

5,269

201,000

29,710

+304,700

June

4,400

4,260

4,66O

4,6OO 

4,810

5,050

5,050

5,250

5,450

5,650

5.690

5,650

5,630

5,690

5,690

5,670

5,560

5,450

5,340

5,320

*5 , 100 

5,010

4,990

4,940

4,620

5,920

3,100

2,840

2,800 

2,600

144,710

4,824

287,000

40,40O

+34.460

July

2,560

2,500

2,570

2,640 

2,560

2,400

2,250

2,260

2,240

2,520

2,210

2,200

2,280

2,520

2,570

2,800

3,040

3,180

3,250

*5,410

5,500 

5,450

2,190

1.980

2,740

2,780

2,750

2,880

2,940 

2,920

2,920

82,570

2,664

163,800

67,730

-42,690

Aug.

2,920

2,900

2,920

2,940 

2,930

2,930

2,940

2,940

2,930

2,960

2,990

2,990

2,990

2,990

3,000

2,990

3,020

5,020

2,990

3,000

3,040 

*3,020

2,980

*2,950

2,940

2,930

2,820

2,740

2,420 

2,260

2.240

89,610

2,891

177,700

68,410

-197.700

Sept.

2,210

2,220

2,240

2,220 

2,210

2,190

2,150

2,120

2,110

2,150

2,190

2,020

1,880

1,8OO

1,760

1,740

1,720

1,710

1,710

1,710

1,710 

1,700

1,680

1,700

1,700

1,710

*1,700

1,670

1,680 

1,560

56,870

1,896

112,800

47,160

-126 , 100

Adjusted for change In lake contents and diversion

Mean

Cfsm

In.

Ac-ft

2,078

4.16

4.79

127,800

3,778

7.56

8.45

224,800

2,295

4.59

5.29

141,000

1,051

2.06

2.38

65,580

656

1.51

1.42

57,750

886

1.77

2.04

54,500

4,455

8.91

9.94

265,000

8,707

17.4

20.08

555,400

6,082

12.2

15.57

361,900

5,071

6.14

7.08

188,800

787

1.57

1.82

48,410

569

1.14

1.27

55,860

Calendar year 1955: 

Water year 1955-56:

Max 

Max

9,920 

5,690

Min 510 

Min 410

Mean 

Mean

2 

2

,007 

,489

AC 

Ac

-ft 

-ft 1, 1, 453 

807

,000 

,000

Adjusted

Calendar year 1955 : 

Water year 1955-56 :

Mean 

Mean

2,418 

2,869

Cfsm 4.84 

Cfsm 5.74

In. 65 

78

.63

.11

Ac 

Ac

-ft 

-ft 1,

2,

750 

085

,000

,000

* Discharge measurement made on this day. 

t Diverson by Kittitas Canal, in acre-feet.

* Change in contents in Keechelus, Kachess, an

467Z40 O -58 -2Z

id Cle Elum Lakes, in acre-feet.
316 YAKIMA RIVER BASIN 

Yakima River at Umtanum, Wash.

Location. Lat 46°51'45", long 120°28'30" , in NW£ sec . 20 , T. 16 N. , R. 19 E. , on right 

bank at Umtanum, half a mile upstream from Umtanum Creek and 10 miles south of Ellensburg.

Drainage area. 1,590 sq mi, approximately.

Records available. August 1906 to September 1956. 

periods, published in WSP 1316.

Monthly discharge only for some

Gage. Water-stage recorder. Datum of gage is 1,300.00 ft above mean sea level, datum of 

1929. Prior to Sept. 28, 1911, staff or chain gages at approximately same site at 

various daturas. Sept. 28, 1911, to Nov. 23, 1936, water-stage recorder at site about 

300 ft upstream at datum 26.70 ft higher.

Extremes . Maximum discharge during year, 11,900 cfs Apr. 22 (gage height, 35.16 ft); minimum, 762 cfs sometime during period of no gage-height record Oct. 12-26 (gage height, 

30.58 ft, from recorded range in stage).

1906-56: Maximum discharge. 41,000 cfs Nov. 15 or 16, 1906 (gage height, 41.1 ft, 

from floodmarks, present datum); minimum recorded, 138 cfs Oct. 3, 1915 (gage height, 

2.86 ft, datum then in use) .

Remarks . --Records excellent except those for periods of no gage-height record or ice 

effect , which are fair. Flow partly regulated by Keechelus , Kachess, and Cle Elum 

Lakes (see p. 327). Water diverted above station for irrigation of about 105,000 

acres .

Cooperation. Records collected and prepared in cooperation with, and results of three 

a is charge measurements furnished by Bureau of Reclamation.

Revisions (water years) . WSP 412: 1914. WSP 1216: Drainage area. WSP 1286: 1910.

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

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

30.6

31.0

32.0

780

1,200

2,640

33.0

34.0

35.5

4,760

7,720

13,200

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

,800

,800

,800

,800 

,600

,400

,650

,670

,930

,190

,040

,700

,400 

,350

,400

,500

,400

,300

1,200

1,100

1,000

900

850

820

800

*960

970

1,010

1,200

1,940

2,140

44,620

1,439

88,500

Nov.

1,930

1,500

1,560

1,930 

3,260

2,620

2,190

2,050

2,330

3,440

4.44O

3,280

2,450

2,140

1,960

2,190

2,330

2,300

2,490

2,490

2,450

2,690

2,860

3,050

3,200

3,460

3,530

3,380

3,400

3,440

80,140

2,671

159,000

Dec.

3,460

3,400

3,360

5,340 

3,380

3,380

3,380

3,550

3,550

3,530

3,720

*7,500

6,130

4,160

4 , 440

4,340

4,270

4,110

3,970

3,930

4,060

4,090

3,930

3,670

3,650

4,130

4,130

3,950

b3,980

b4,100

b4,400

124,790

4,025

247,500

Jan.

b4,400

4,440

4,440

4,460 

4.610

4,540

4,510

4,460

4,370

4,220

3,240

2,880

2,420 

2,270

2,200

2,110

2,050

2,020

2,020

1,940

1,880

1,860

1,840

1,800

1,670

1,610

1,650

1,690

1,610

1,520

1JJ420

86,150

2,779

170,900

Feb.

1,360

1,380

bl,400

bl,450

bl,450

bl,450

bl,600

1,620

1,610

1,770

1,810

2,020

*2,080

2,040

1,880

1,930

1,980

2,000

2,000

1,990

1,980

2,020

2,020

2,000

2,000

2,000

1,990

2,000

2,040

- -----

52,870

1,823

104,900

Mar.

2,140

2,620

2,820

2,750

2,610

2,500

2,490

2,440

2,820

2,800

2,840

2,880

3,090 

3,160

3,380

4,040

5,020

5,350

6,040

*7,460

6,860

6,670

7,240

7,690

6,340

6,280

5,160

5,370

5,720

5,950

5,890

138,420

4,465

274,600

Apr.

5,720

5,740

5,720

6,430 

6,610

5,920

5,600

5,740

5,980

6,130

7,210

*7,720

8,300 

8,430

8,710

8,300

7,180

7,050

7,790

8,640

9,740

11,200

10,400

8,260

7,180

7,660

8,030

7,400

6,760

6,400

221,950

7,398

440,200

May

6,160

5,860

5,260

4,810 

5,130

5,740

6,310

7,270

8,230

9,010

7,240

6,430

6 , 070 

5,720

5,920

6,790

7,860

8,740

9,320

1O,000

9,150

7,560

7,620

*8,160

7,530

7,140

6,92O

6,400

6,190

6,790

7,460

218,790

7,058

434,000

June

,920

,430

,530

,500 

,210

,180

,920

,920

,050

,090

.600

,960

,620 

,660

,460

,500

,270

,080

,050

,080

,760

,520

* ,370

,190

,890

,210

,270

,720

,530

,320

200,810

6,694

398,300

July

3,200

3,220

3,260

3,280 

3,320

3,220

2,950

2,920

2,880

2,880

2,880

2,660

2,820 

2,800

2,840

3,160

3,180

3,460

3,480

3,630

5,780

3,740

3,380

1,960

2,800

*2,950

2,950

2,950

3,240

3,180

3,180

96,150

3,102

190,700

Aug.

3,280

3,300

3,340

3,420 

3,440

3,480

3,440

3,420

3,400

3,380

3,400

3,400

3,580 

5,420

3,420

3,460

3,480

3,480

3,480

3,460

3,480

3,4OO

3,340

*3,320

3,400

5,550

3,500

5,560

5,180

2,840

2,770

104 , 400

5,568

207,100

Sept.

2,750

2,750

2,750

2,710 

2,640

2,640

2,590

2,560

2,570

2,640

2,950

2,880

2,620 

2,540

2,580

2,550

2,280

*2,200

2,170

2,120

2,120

2,170

2,170

2,160

2,140

2,160

2,110

2,100

2,110

2,170

72,400

2,413

145,600

Calendar year 1955: Max 12,400 Mln 500 Mean 2,780 Ac-ft 2,012,000

Water year 1955-56: Max 11,200 Min 800 Mean 3,938 Ac-ft 2,859,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 1-6, 12-25j discharge estimated on basis of recorded range ir 

stage, weather records, and records for Yakima River at Cle Elum.
YAKIMA RIVER BASIN 31V

Bumping River- near Nile, Wash.

Location. Lat 46°52', long 121°18', in NE-J- sec. 23, T. 16 N., R. 12 E. , on left bank 

a quarter of a mile downstream from spillway of Bumping Lake Dam and 19 miles west of 

Nile.

Drainage area. 68.6 sq mi.

Records available.--June to July 1906, April 1909 to September 1956.

Gage. Water-stage recorder. Datum of gage is 3,367.10 ft above mean sea level (Bureau of 

Reclamation benchmark). June 13 to July 31, 1906, staff gage at site half a mile upstream at different datum. Apr. 27 to Aug. 6, 1909, June 24, 1912, to June 13, 1913, 

staff gage at site three-eighths of a mile upstream at different datum. Aug. 7, 1909, 

to June 23, 1912, staff gage at site 1,300 ft upstream at different datum.

Average discharge.--47 years (1909-56), 294 cfs (212,800 acre-ft per year), adjusted for 

storage since November 1910.

Extremes. Maximum discharge during year, 2,510 cfs June 1 (gage height, 5.58 ft); minimum, 

24 cfs Nov. 7 (gage height, 1.48 ft).

1906, 1909-56: Maximum discharge, 5,180 cfs Dec. 29, 1917 (gage height, 9.33 ft); 

practically no flow 'when gates in outlet conduit are closed.

Remarks. Records good. No diversion. Flow regulated by dam at Bumping Lake (see p. 327).

Cooperation. Gage-height record, 5 discharge measurements, and computations of daily discharge furnished by Bureau of Reclamation; 3 discharge measurements made and records 

reviewed by Geological Survey.

Revisions (water years) . .WSF 369: 1911. WSP 1246: Drainage area. WSP 1286: 1911.

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

discharge, in cubic feet per second)

1.9 

2.1 

2.5 

3.0

82

125

428

3.5

4.0

5.5

680

1,010

2,450

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

180

177

177

177

177

177

177

177

186

194

192

192

192

192

194

200

200

203

203

206

206

206

206

206

*212

215

215

218

231

237

237

6,162

199

12,220

+6,960

Nov.

237

244

251

251

257

293

263

298

*419

455

460

460

455

482

515

511

565

608

608

603

598

674

704

710

704

704

698

669

658

642

14,996

500

29,740

-160

Dec.

630

614

598

581

560

555

550

530

506

482

492

540

570

586

598

598

586

576

565

555

550

545

537

560

550

535

525

506

487

478

455

17,000

548

33,720

-8,840

Jan.

446

424

402

381

361

349

345

326

311

289

278

268

261

251

237

225

215

203

197

194

192

189

186

180

177

174

174

172

172

169

"

7,914

255

15,700

-3,660

Feb.

164

161

158

150

128

111

109

104

102

100

102

102

104

104

104

104

104

104

104

104

107

100

92

90

90

88

8ff

88

88

3,154

109

6,260

-140

Mar.

88

88

88

88

88

88

88

90

90

88

88

88

88

88

88

88

88

90

90

88

86

86

86

88

88

102

125

128

125

125

125

2,932

94.6

5,820

+20

Apr.

125

123

123

120

120

120

116

114

111

111

116

120

128

145

177

209

231

244

251

289

206

125

140

148

200

278

381

385

385

£2 

5,730

191

11,370

+10,560

May

402

520

545

603

664

652

642

652

664

674

692

680

674

692

692

710

752

458

326

35?

334

506

*849

877

870

989

1,270

1,410

1,470

1,370

2,040

24,032

775

47,670

+22,600

June

2,420

2,200

1,900

1,810

1,550

1,280

1,120

1,030

1,030

1,110

1,160

1,150

*1,110

1,080

1,150

1,110

1,070

1,070

1,190

1,230

996

814

926

989

961

*919

996

1,210

1,230

1,120

36,931

1,231

73,250

-1,010

July

1,020

940

933

933

954

*954

940

947

1,040

1,170

1,260

1,260

1,230

1,150

1,020

919

877

842

863

820

870

863

870

891

884

776

630

581

576

570

570

28,153

908

55,840

-6,950

Aug.

565

550

520

473

455

437

432

381

*353

349

345

357

365

361

337

322

322

318

315

315

311

311

307

307

303

300

300

264

228

208

cOp

10,917

352

21,650

-11,240

Sept.

206

206

203

203

200

200

200

197

197

197

*166

142

140

140

140

140

169

180

180

177

177

177

177

177

174

174

174

172

172

169

5,326

178

10,560

-4,810

Adjusted for change in contents in Bumping Lake

Mean

Cf sm

In.

Ac-ft

312

4.55

5.24

19,180

497

7.24

8.08

29,580

405

5.90

6.80

24,880

196

2.86

3.29

12,040

106

1.55

1.67

6,120

95.0

1.38

1.60

5,840

369

5.38

5.99

21,930

1,143

16.7

19.21

70,270

1,214

17.7

19.74

72,240

795

11.6

13.36

48 , 890

169

2.46

2.85

10,410

96.6

1.41

1.57

5,750

Calendar year 1955: 

Water year 1955-56;

Max 

Max

1,980

2,420

Min 

Min

6 

86

.1 Mean 

Mean

329 

446

Ac-ft 

Ac-ft

238, 

323,

400 

800

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean 

Mean

328 

451

Cfsm 

Cfsm

4 

6

.78 

.57

In. 

In.

64.86 

89.40

Ac-ft 

Ac-ft

237, 

327,

400 

100

* Discharge measurement made on this day.

t Change in contents in Bumping Lake, in acre-feet.
318 YAKIMA RIVER BASIN

American River near Nile, Wash.

Location.--Lat 46°58'30", long 121°10'10", in SW£ sec. 12, T. 17 N., R. 13 E. , on right 

bank 300 ft upstream from Bumping Lake road crossing, three-quarters of a mile upstream 

from mouth, and 16 miles northwest of Nile.

Drainage area.--78.9 sq mi.

Records available.--April 1909 to March 1912, July to September 1913, June to September 

1914, June to September 1915, October 1939 to September 1956. Monthly discharge only 

for some periods, published in WSP 1316.

Gage. Water-stage recorder. Datum of gage is 2,700.0 ft above mean sea level (Washington 

State Highway Department benchmark). Prior to Sept. 12, 1915, staff gage at site 

300 ft downstream at different datum. Oct. 12 to Dec. 7, 1939, staff gage at present 

site and datum.

Average discharge.--19 years (1909-11, 1939-56), 248 cfs (179,500 acre-ft per year).

Extremes.--Maximum discharge during year, 2,440 cfs May 20 (gage height, 76.25 ft); minimum, 55 cfs Feb. 28, Mar. 14 (gage height, 72.03 ft).

1909-12, 1913-15, 1939-56: Maximum discharge, 2,600 cfs May 27, 1948 (gage height, 

76.6 ft, from high-water mark in well), from rating curve extended above 1,400 cfs; minimum, 20 cfs Nov. 22, 1940.

Remarks.--Records good except those for periods of ice effect, which are poor. No regulation or diversion.

Cooperation. Gage-height record collected in cooperation with, and six discharge measurements furnished by Bureau of Reclamation.

Revisions (water years).--WSP 982: 1940-42. WSP 1216: Drainage area. WSP: 1286: 

1911.

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

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

72.0

72.3

72.6

73.0

51

96

157

264

73.5

74.0

75.0

76.2

452

710

1,370

2,390

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

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Ac -ft

Oct.

61

59

56

56

70

67

64

78

168

213

164

135

135

135

146

146

144

146

164

162

146

139

129

127

*366

448

284

236

267

Pfln

5,153

166

2.10

2.43

10,220

Nov.

239

213

343

740

764

526

431

382

*435

650

606

444

400

300

250

230

225

225

225

225

198

182

175

175

192

182

178

157

150

146

9,768

326

4.13

4.60

19,370

Dec .

139

133

129

123

121

123

119

117

113

109

173

550

*617

ffi

386

336

284

242

222

233

242

271

304

264

239

225

211

185

160

150 

145

7,109

229

2.90

3.35

14,100

Jan.

140

140

143

145

150

155- 155

144

137

133

129

127

121

119

115

*115

115

113

109

107

104

104

104

100

100

92

84

77

74

72

7JL

3,594

116

1.47

1.69

7,130

Feb.

71

72

72

72

76

80

85

82

81

78

79

79

76

74

70

66

62

61

68

*74

73

72

70

70

68

67

67

67

68

2,103

72.5

0.919

0.99

4,170

Mar.

67

67

67

66

67

66

67

66

67

67

65

65

66

63 -53

63

67

74

82

86

86

86

*96

111

121

137

T3T

127

123

123

121

2,623

84.6

1.07

1.Z4

5,200

Apr.

117

113

Tl3

117

123

123

121

121

135

168

*213

230

304

394

492

492

461

470

540

692

902

1,050

992

872

824

758

740

680

612

560

13,529

451

5.72

6.38

26,830

May

535

535

535

511

502

521

575

704

896

950

902

776

668

634

698

908

1,290

*1,830

2,240

»2^540

1,950

1,660

*1,690

1,750

1,640

1,550

1,400

1,250

1,290

1,610

2,000

36,340

1,172

14.9

17.13

72,080

June

2,080

1,710

1,590

1,430

1,170

957

848

806

878

1,080

1,100

957

*908

914

964

908

848

896

1,030

1,050

902

848

854

812

710

680

85T

1,010

920

77 6

30,490

1,016

12.9

14.37

60,480

July

710

656

704

746

728

+728

710

722

848

957

1,010

950

908

824

680

617

585

580

612

650

617

560

497

470

431

394

347

311

280

267

248

19,347

624

7.91

9.12

38,370

Aug.

233

216

205

195

192

190

188

185

180

178

173

166

162

162

159

153

144

135

131

129

125

»119

115

111

109

123

111

104

98

153" 93

4,677

151

1.91

2.20

9,28O

Sept.

88

86

84

82

79

78

76

74

73

76

113

IS?

88

81

76

73

70

70

68

68

68

67

66

64

63

*63

63

61

63

68

2,251

75.0

0.951

1.06

4,460

Calendar year 1955: Max 1,680 Mln 51 Mean 241 Cfsm 3.05 In. 41.47 Ac-ft 174, 5OO

Water year 1955-56: Max 2,340 Mln 56 Mean 374 Cfsm 4.74 In. 64.56 Ac-ft 271, 7OO

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 13-19, Dec. 29 to Jan 

FebTT5-19, Mar. 11, 12.

6, Jan. 26 to Feb. 7,
YAKIMA RIVER BASIN 319

Tieton River at Tieton Dam, near Naches, Wash.

Location. Lat 46°39'30", long 121°07'20", in sec. 31, T. 14 N., R. 14 E. (unsurveyed),

 on left bank 900 ft upstream from Wildcat Creek, 1,200 ft downstream from Tieton Dam,

19 miles upstream from Oak Creek, and 22 miles southwest of Naches. 

Drainage area. 187 sq mi. 

Records available.--August 1908 to December 1912, June to September 1914, June 1918 to

 March 1921, April 1925 to September 1956. Monthly discharge only for some periods, 

published in WSP 1316. Published as "at McAllister Meadows" 1908-14 and as at 

Rimrock" 1918-19. .

Gage.--Water-stage recorder. Datum of gage is 2,680.99 ft above mean sea level (Bureau 

of Reclamation benchmark). Prior to Oct. 1, 1914, staff gage at site a third of 

a mile upstream at different datum. Oct. 1, 1918, to Mar. 31, 1919, Apr. 27 to Sept. 4, 

1925, staff gage and reference point and Sept. 5, 1925, to Apr. 23, 1933, water-stage 

recorder, at site about 800 ft downstream at different datum. Apr. 24, 1933, to 

Dec. 11, 1934, water-stage recorder at present site at datum 2.0 ft higher.

Average discharge.--37 years (1908-12, 1918-20, 1925-56), 493 cfs (356,900 acre-ft per 

year), adjusted for storage since October 1925.

Extremes.--Maximum discharge during year, 2,980 cfs June 9 (gage height, 6.36 ft); mini-

 mum, 6.0 cfs Mar. 8 (gage height, 1.42 ft).

1908-14, 1918-21, 1925-56: Maximum discharge, 8,450 cfs Dec. 22, 1933 (gage height, 

9.24 ft); no flow Apr. 4-6, 10, 1930. 

Remarks.--Records good. No diversion above station. Flow regulated by Tieton Reservoir

 lsee~p. 327).

Cooperation.--Gage-height record, 14 discharge measurements, and computations of daily

discharge furnished by Bureau of Reclamation; 2 discharge measurements made and records

reviewed by Geological Survey. , 

Revisions (water years).--WSP 369: 1909-10. WSP 1286: 1910, 1928(M), 1935(M).

WSP 1316: 1909.

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

76

152

3.3 

4.0 

5.0 

6.3

330

650

1,230

2,880

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

402

320

298

326

346

330

330

316

260

192

139

116

110

TIo

110

110

110

114

118

118

120

120

120

»120

120

120

120

124

122

118

116

5,595

180

11,100

+15,620

Nov.

110

105

101

92

97

105

106

112

194

278

295

400

486

540

724

848

*848

848

848

848

848

876

920

914

914

914

909

909

909

909

17,007

567

33,730

+8,310

Dec.

904

904

904

904

904

898

898

898

898

898

893

455

216 662"

843

*843

843

843

876

920

926

926

931

926

926

926

931

980

1,040

1,080

1,150

27,151

876

53,850

-8,710

Jan.

1,150

1,150

1,230

1.520

1,320

1,310

1,320

1,320

1,150

808

650

495

*555

555

555

555

464

410

410

410

410

410

410

410

374

330

330

334

334 

330

326

21,135

682

41,920

-18,950

Feb.

330

442

520

49T

491

442

406

406

406

406

406

406

406

406

*394

362

346

323

323

316

295

295

295

295

295

295

295

295

295

10,683

368

21,190

-6,120

Mar.

295

295

295

295

295

298

201

201

365

410

410

432

455

455

*455

455

455

455

455

450

450

450

450

177

122

342

446

496

589 

660

66^

12,269

396

24,340

-6,960

Apr.

660

711

755

760

477

782

810

810

607

810

*810

810

810

347

16

16

186

450

550

303

16

16

15.5

14.5

236 

539

650

650

650 

750

15,017.0

501

29,790

+25,570

May

826

826

892

931

931

931

518

176

417

298

299

632

755

832

870

865

*438

103

11

10.5

11

360

814

953

1,210

1,650

1,760

*2,060

*2J.2Q 

2,120

2,120

26,739.5

863

53,040

+69,300

June

2,120

2,120

2,400

2,470

2,350

2,410

2,800

2,830

2,860

2,850

2,800

2,780

2,500

2,120

1,870

1,610

1,610

1,420

1,310

1,310

1,220

1,160

1,160

1,160

*1 , 080

898

848

887

887 

392

54,732

1,824

108,600

+5,060

July

898

898

904

931

1,090

1,220

1,340

1,360

*1 , 480

1,630

1,530

1,620

1,740

1,830

1,960

1,990

1,980

1,990

1,990

1,990

1,980

1,960

1,500

*1,000

1,300

1,150

1,090

1,090

1,090 

1,090

1,090

44,711

1,442

88,680

-14,010

Aug.

1,090

1,090

1,100

1,100

1,100

1,060

1,020

*1,020

1,010

1,070

1,100

1,100

1,080

1,050

1,060

1,050

1,050

1,050

1,050

*1,040

1,040

1,040

1,040

1,040

1,040

1,040

997

975

958 

920

914

32,294

1,042

64,050

-33,160

Sept.

914

914

914

909

904

904

904

909

904

904

882

832

810

*810

810

804

804

804

799

799

799

804

799

799

772

755

755

755

755 

659

24,886

830

49,360

-31,560

Adjusted for change In contents In Tieton Reservoir

Mean

Cfsm

In.

Ac-ft

435

2.33

2.63

26,720

707

3.78

4.22

42,040

734

3.93

4.53

45,140

374

2.00

2.30

22,970

262

1.40

1.51

15,070

283

1.51

1.74

17,380

930

4.97

5.55

55,360

1,989

10.6

12.26

122,300

1,911

10.2

11.40

113,700

1,214

6.49

7.49

74,670

502

2.68

3.10

30,890

299

1.60

1.78

17,800'

Calendar 

Water ye

year 1955: 

ar 1955-56:

Max 

Max

2,420 

2,860

Min 

Mln

92 

10 .5

Mean 

Mean

566 

798

Ac-ft 

Ac-ft

409 

579

,400 

,600

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean 

Mean

563 

805

Cfsm 

Cfsm

3

4,

.01 

.30

In. 40.86 

58.56

Ac-ft 

Ac-ft

407 

584

,400 

,000

* Discharge measurement made on this day.

t Change In contents In Tieton Reservoir, In acre-feet.
320 YAKIMA RIVER BASIN

Tieton River at headworks of Tieton Canal, near Naches, Wash.

Location. Lat 46°40'10", long 121°00'20", in sec. 30, T. 14 N,, R. 15 E. (unsurveyed), 

on right bank 1,000 ft downstream from headworks of Tieton Canal, 12 miles upstream 

from Oak Creek, and 16 miles southwest of Naches.

Drainage area. 239 sq mi.

Records available. April 1906 to September 1956. Monthly discharge only for some periods, 

published in WSP 1316.

Gage.--Water-stage recorder. Datum of gage is 2,280.44 ft above mean sea level, unadjusted. Prior to July 28, 1909, staff gages at same site or sites within 1-g miles 

downstream referred to same datum.

Average discharge.--50 years, 560 cfs (405,400 acre-ft per year), adjusted for diversion 

since 1910 and for storage since October 1924.

Extremes.--Maximum discharge during year, 2 330 cfs June 3 (gage height, 5.00 ft); minimum, 39 cfs Mar. 8 (gage height, 1.78 ft).

1906-56: Maximum discharge, 8,910 cfs Dec. 22, 1933 (gage height, 9.70 ft); no flow 

at times in 1926, 1929, 1931-32, 1934, 1945.

Remarks.--Records good. Diversion for irrigation by Tieton Canal. Flow regulated by 

Tieton Reservoir, 7 miles above station.

Cooperation. Gage-height records collected in cooperation with, and seven discharge measurements furnished by Bureau of Reclamation.

Revisions (water years) . WSP 1216: Drainage area. WSP 1286: 1910 (M), 1920.

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

in cubic feet per second) 

(Shifting-control method used Dec. 8 to Jan. 11)

2.1 

2.3 

2.5 

2.7 

3.0

96

159

235

322

475

3.3 

3.6 

4.0 

4.5 

5.0

665

890

1,230

1,740

2,330

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

(t)

(*)

Oct.

313

346

308

356

565

346

356

327

290

219

142

122

116

113

113

110

110

ToB- 108

108

108

108

108

*108

108

113

113

g!32

174 

163

g!52

5,763

186

11,430

+15,620

161

Nov.

g!42

119

149

216

g!74

g!63

152

166

235

365

356

g410

g458 

g548

g707

906

*g906

g898

g874

850

874

914

898

890

922

962

954

946

954 

946

18,054

602

35,810

+8,310

1,270

Dec.

938

g938

g970

gl.020

gl,010

gl,030

g996

996

g996

gl.OOO

1,190

946

g448 

*742

1,000

987

970

946

g946

g996

1,060

1,110

1,110

1,080

1,060

1,060

1,040

gl,040

gl,160

gl,170

gii.280

31,235

1,008

61,950

-8,710

369

Jan.

1,260

1,240

1,340

1,480

1,500

1,480

1,500

1,490

1,310

914

721

471

580 

594

600

600

511

453

453

453

453

453

453

448

415

380

370

375

375 

375

370

23,417

755

46,450

-18,950

0

Feb.

370

475

542

511

511

47O

436

436

431

431

431

448

448 

442

426

400

390

360

356

*356

327

332

327

322

322

322

327

327

327

11,603

400

23,010

-6,120

0

Mar.

332

332

336

336

332

332

273

385" 198

426

436

458

475 

487

*487

499

523

542

568

580

554

561

587

411

285

535

600

639

728 

826

826

14,889

480

29,530

-6,960

242

Apr.

810

874

946

987

688

996

996

1,030

818

1,140

*1,190

1,230

1,280 

898

554

475

542

826

978

842

652

658

548

448

5lff

882

1,010

970

906 

987

25,709

857

50,990

+25,570

573

May

1,060

1,010

1,030

1,060

1,060

1,060

732

375

606

493

410

686

818 

898

970

1,030

691

375

300

264

185

407

882

1,050

1,220

1,740

1,830

*2,070

2,110

2,140

2^210

30,772

993

61,040

+69,300

12,560

June

2,200

2,160

2,190

2,090

2,050

2,090

2,130

2,130

2,100

2,130

2.110

2,110

1,990 

1,820

1,640

1,410

1,410

1,260

1,170

1,160

1,090

1,030

1,030

1,030

»930

742

686

693

686 

679

45,946

1,532

91,130

+5,060

16,760

July

679

679

672 672-

802

930

1,030

1,050

1,120

*1,230

1,210

1,260

1,360 

1,500

1,550

1,630

1,640

1, 630

1,630

1,630

1,630

1,630

1,300

677

978

842

*765

765

758 

750

742

34,741

1,121

68,910

-14,010

20,830

Aug.

742

742

750

742

742

700

672

665

665

714

765 765-

735

714

714

707

700

700

693

*693

693

*693

686

686

686

686

658

639

620 

587

21,541

695

42,730

-33,160

21,020

Sept.

587

587

587

587

587

587

587

587

580

580

587

554

548 

548

554

554

566

580

580

587

587

594

594

*594

574

561

574

580

580 

542

17,294

576

34,300

-31,560

16,570

Adjusted for change in reservoir contents and diversion

Mean

Cfsra

In.

Ac-ft

443

1.85

2.13

. 21,210

763

3.19

3.56

45,390

872

3.65

4.21

53,610

447

1.87

2.16

27,500

294

1.23

1.33

16,890

371

1.55

1.79

22,810

1,296

5.42

6.05

77,130

2,324

9.72

11.21

142,900

1,899

7.95

8.87

113,000

1,232

5.15

5.94

75,730

497

2.08

2.40

30,590

325

1.36

1.51

19,310

Calendar 

Water yet

Calendar 

Water yes

year 1955: 

ir 1955-56:

year 1955: 

ir 1955-56:

Max 

Max

Mean 

Mean

2,280 

2,210

605 

898

Min

Min

Adjust

Cfsra 

Cfsra

108 

108

ed

2. 

3.

53 

76

Mean 

Mean

In. 

In.

468 

768

34.34 

51.16

Ac-ft 

Ac-ft

Ac-ft 

Ac-ft

339 

557

437 

652

,200 

,300

,800 

,100

* Discharge measurement made on this day.

t Change in contents of Tieton Reservoir, in acre-feet.

t Diversion by Tieton Canal, in acre-feet.

g Computed from once-daily staff-gage readings.
YAKIMA RIVER BASIN 321

Naches River below Tieton River near Naches, Wash.

Location. Lat 46°44'40", long 120°46'00", In SWijNEi sec. 36, T. 15 N., R. 16 E., on left 

bank half a mile downstream from Wapatox power canal, three-quarters of a mile downstream from Tieton River, and 3j miles northwest of Naches.

Drainage area. 941 sq mi.

Records available. August to October 1905, October 1908 to September 1956. Monthly discharge only for some periods, published in WSP 1316.

Gage.--Water-stage recorder. Datum of gage is 1,549.67 ft above mean sea level, datum of

~1929, supplementary adjustment of 1947. Prior to Dec. 7, 1916, staff gage and Dec. 7, 

1916, to Sept. 9, 1936, water-stage recorder, at site five-eighths of a mile upstream 

at different datums. Sept. 10 to Oct. 30, 1936, staff gage at present site and datum.

Average discharge.--48 years, 1,714 cfs (1,241,000 acre-ft per year), adjusted for diver-

 sions by Selah Valley and Tieton Canals since 1909, city of Yakima at Oak Flat since 

1929, by Wapatox Canal since 1936, for change in contents in Bumping Lake since November 1910, and in Tieton Reservoir since October 1924.

Extremes.--Maximum discharge during year, 13,300 cfs June 1 (gage height, 17.78 ft); minimum, 150 cfs Oct. 24 (gage height, 10.66 ft).

1905, 1908-56: Maximum discharge, 32,200 cfs Dec. 22, 23, 1933 (gage height, 14.33 

ft, site and datum then in use); minimum, 1 cfs Nov. 7, 1942, and for many days during 

winter of 1943-44, result of regulation and diversion.

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

 which are fair. Flow regulated by Bumping Lake and Tieton Reservoir (see p. 327), by 

diversion at Oak Flat for municipal supply of city of Yakima below station, and by 

diversion of Selah Valley, Tieton, and Wapatox Canals. Small unmeasured diversions 

for irrigation of approximately 420 acres above station.

Cooperation. Gage-height record collected in cooperation with, and nine discharge measurements furnished by Bureau of Reclamation.

Revisions (water years). WSP 1216: Drainage area. WSP 1286: 1910(M), 1911, 1929-30(M), 

1932-33JM), 1935(M). WSP 1396: 1954.

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

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac -ft

(t)

(*)

Oct.

169 

176

166

169

210

198

194

206

461

551

362

218

218

206

231

231

210

202

202

202

184

166

156

153

324

*695 

589

394

653

1,240

916

10,252

331

20,330

+22,580

33,380

Nov.

717 

641

754

1,750

2,060

1,530

1,280

1,130

1,300

5.920

3,360

2,360

1,990

1,840

1,830

2,010

1,950

2,050

2,020

1,950

1,840

*1,820

1,900

1,870

1,920

1,970 

1,910

1,820

1,780

1,750

55,042

1,835

109,200

+8,150

26,850

Dec.

1,720 

1,650

1,640

1,660

1,650

1,630

1,610

1,590

1,550

1,550

2,020

4,720

*3,490

2,800

2,810

2,530

2,320

2,150

2,050

2,110

2,200

2,440

2,530

2,390

2,250

2,180 

1,920

1,950

1,880

1 , 880

1,970

66,820

2,155

132,500

-17,550

24,440

Jan.

1,980 

1,920

1,950

2,040

1,990

1,950

1,900

1,870

1,700

1,330

1,100

928

976

958

1,010

967

*884

782

767

753

731

717

717

695

668

608 

545

569

563

b500

b430

34,498

1,113

68,430

-22,610

22,870

Feb.

b440 

b580

b700

b650

b650

*702

64T

608

589

601

608

648

595

582

539

427

532

508

585

479

*444

416

405

405

399

394 

388

394

394

15,303

528

30,350

-6,260

19,080

Mar.

399

416

427

416

405

399

394

267

416

450

433

450

520

502

532

*a560

a660

a760

a920

958

916

933

1,060

1,210

1,110

1.570 

1,430

1,380

1,380

1,570

1,570

24,413

788

48,420

-6,940

24,980

Apr.

1,480 

1,470

1,510

1,700

1,490

1,700

1,650

1,690

1,630

2,250

2,800

2,970

3,640

4,000

4,360

*4,110

3,600

3,840

4,560

5,570

6,640

7,850

7,150

5,890

5,200

5,530 

5,890

5,450

4,940

4,380

114,920

3,831

227,900

+36,130

25,670

May

4.070 

4,070

4,090

4,090

4,170

4,380

4,420

4,560

5,570

6,060

5,280

4,780

4,380

4,190

4,620

5,680

*7,560

9,060

*10,100

11,000

*8,960

7,410

*8,680

9,490

8,930

8,930 

8,790

8,430

8,600

9,670

10,700

210,520

6,791

417,600

+91,900

50,080

June

12,900 

11,400

10,200

9,250

7,980

6,850

6,180

5,810

5,850

6,580

6,700

*6,130

5,670

5,300

5,230

4,860

4,660

4,600

4,880

4,940

4,480

3,940

3,940

3,860

3,590

5,510 

3,450

3,900

3,900

3,560

173,900

5,797

344,900

+4,050

51,690

July

3,280 

3,170

3,170

3,090

*3,170

3,260

3,310

3,310

3,590

*3,900

4.050

3,880

3,920

5,790

5,430

3,300

3,120

3,060

5,060

3,140

3,120

2,940

2,610

1,850

2,200

1,970 

1,680

1,520

1,450

*1,420

1,400

90,140

2,908

178,800

-20,960

57,750

Aug.

1.570 

1,330

1,510

1,220

1,180

1,110

1,040

990

885

874

918

918

885

840

852

?ae

781

764

747

738

722

*706

706

714

690

722 

690

658

594

521

500

26,749

865

53,060

-44,400

57,890

Sept.

482 

476

470

446

407

390

375

370

570

*580

521

440

370

559

515

500

296

3lF

320

324

334

559

539

339

334

524 

529

554

365

380

11,123

571

22,060

-56,370

52,510

Mean

Cfsm

In.

Ac -ft

1,241

1.32

1.52

76,290

2,423

2.57

2.87

144,200

2,267

2.41

2.78

139,400

1,117

1.19

1.37

68,690

751

0.798

0.86

43,170

1,081

1.15

1.32

66,460

4,869

5.17

5.77

289,700

9,101

9.67

11.15

559,600

6,732

7.15

7.98

400,600

3,506

3.73

4.30

215,600

1,082

1.15

1.33

66,550

642

0.682

0.76

38,200

Observed

Calendar year 1955: 

Water year 1955-56:

Max 9,260 

Max 12,900

Min 25 

Mln 153

Mean 1,197 

Mean 2,278

Ac-ft 

Ac-ft

866,400 

1,654,000

Adjusted

Calendar year 1955 : 

Water year 1955-56 :

Mean 1,816 

Mean 2 , 904

Cfsm 1.93 

Cfsm 3.09

In. 26.18 

In. 42.01

Ac-ft 

Ac -ft

1,315,000 

2,108,000

w Discharge measurement made on this day. 

t Change in contents in Bumping Lake and Tieton Reservoir, in acre-feet. 

* Diversion by Tieton, Selah Valley and Wapatox Canals, and city of Yakima, in acre-feet. 

a No gage-height record; discharge estimated on basis of weather records and records for stations 

on nearby streams.

b Stage-discharge relation affected by ice.
322 YAKIMA RIVER BASIN

North Pork Ahtanom Creek near Tampico, Wash.

Location. Lat 46°33'40", long 120°S5'10", in NWi? sec. 2, T. 12 N., R. 15 E., on left bank 

150 ft downstream from Nasty Creek, 3| miles upstream from Tampico and confluence with 

South Fork, and 20 miles west of Yaklma.

Drainage area. 68.9 sq mi.

Records available. August 1907 to September 1956 (no winter records in water years 1908-9, 

1916-30).Monthly discharge only for some periods, published in WSP 1316.

.--Water-stage recorder and sharp-crested weir. Altitude of gage is 2,450 ft (from 

opographic map). Prior to Sept. 20, 1934, staff gage or water-stage recorder at site 

50 ft upstream at different datum.

Average discharge.--32 years (1909-15, 1930-56), 68.8 cfs (49,810 acre-ft per year).

Extremes. Maximum discharge during year, 823 cfs May 20 (gage height, 3.00 ft); minimum 

daily, 17 cfs Feb. 1.

1907-56: Maximum discharge, that of May 20, 1956; maximum gage height, 4.6 ft 

June 18, 1916 (site and datum then in use); minimum discharge, 5.0 cfs Nov. 14, 15, 

1944, Jan. 20, 1945 (gage height, 0.18 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 poor. No diversion of importance. No regulation.

Cooperation. Gage-height record, 6 discharge measurements, and computations of daily discharge furnished by Office of Indian Affairs; 10 discharge measurements made and records reviewed by Geological Survey.

Revisions (water years). WSP 1216: Drainage area. WSP 1286: 1910(M), 1914-15.

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 Apr. 21-3O)

0.2 

.3 

.5

.7 70

1.0 

1.5 

2.0 

2.8

124

242

400

723

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

Cfsro

In.

Ac-ft

Oct.

a!9

a20

21

22

24

22

22

26

46

43

30

28

28

28

28

27

27

27

27

26

24

24

24

24

29

27

*26

24

32

34

28

837

27.0

0.392

0.45

1,660

Nov.

27

24

38

55

50

40

38

40

46

102

66

a54

a42

a30

22

20

20

20

22

26

29

31

33

35

40

38

36

35

32

a 30

1,121

37.4

0.543

0.61

2,220

Dec.

a29

a28

27

27

28

29

29

30

29

30

70

183

114

78

*77

75

67

55

52

62

91

126

116

*99

88

83

73

58

52

52

62

2,019

65.1

0.945

1.09

4,000

Jan.

66

61

62

66

61

55

50

46

45

45

43

42

42

41

42

43

41

40

38

38

38

37

37

36

35

34

28

25

23

20

18

1,298

41.9

0.608

0.70

2,570

Feb.

17

IS

18

19

20

22

25

27

28

29

30

33

36

34

28

29

37

36

37

36

*35

34

32

32

31

30

30

30

30

843

29.1

0.422

0.46

1,670

Mar.

31

30

31

30

30

30

30

30

30

ii

29

30

*31

30

31

35

42

56

78

81

81

88

120

156

183

185

149

132

*128

141

143

2,250

72.6

1.05

1.21

4,460

Apr.

128

124

T24

145

152

139

130

134

156

190

228

256

*289

330

380

376

346

350

*373

435

482

576

531

435

383

373

363

336

311

283

8,858

295

4.28

4.78

17,570

May

277

271

268

259

254

259

283

333

383

393

346

304

274

271

301

383

482

597

*690

*725

610

*563

547

568

555

516

475

457

475

504

618

13,239

427

6.20

7.15

26,260

June

644

588

535

471

407

356

327

*311

330

366

*346

320

314

311

311

304

295

289

317

292

271

259

256

237

226

231

245

248

231

215

9,853

328

4.76

5.32

19,540

July

200

198

190

181

178

174

169

167

167

167

163

158

152

143

132

122

114

110

*104

112

99

91

86

83

80

76

73

72

68

67

64

3,960

128

1.86

2.14

7,850

Aug.

64

66

67

62

64

60

56

55

52

50

50

48

47

46

45

45

44

42

42

4O

4O

38

*38

38

41

42

38

37

36

35,

35

1,463

47.2

0.685

0.79

2,900

Sept.

35

34

34

*34

32

32

31

30

30

31

50

36

34

31

30

30

29

29

29

28

28

28

28

28

28

27

27

27

27

28

925

30.8

0.447

0.50

1,830

Calendar year 1955: Max 326 Mln 14 Mean 56.2 Cfsm 0.816 In, 11.09 Ac-ft 40,69O

Water year 1955-56: Max 723 Mln 17 Mean 128 Cfsro 1.86 In. 25.20 Ac-ft 92,530

Peak discharge (base, 200 efsl.--Dee. 12 (11 a.m.) 210 cfs (1.38 ft); Mar. 25 (8 p.m.) 215 cfs 

(1.40 ft); Apr. 22 (11 p.m.) 597 cfs (2.65 ft); May 10 (1:30 a.m.) 414 cfs (2.11 ft); May 20 (1:30 

a.m.) 823 cfs (3.00 ft); May 31 (11 p.m.) 681 cfs (2.71 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for South 

Fork Ahtanum Creek.

Note.--Stage-discharge relation affected by Ice Nov. 16-23, Dec. 15, Jan. 28 to Feb. 12 (no gageheight record Feb. Z, 2, 7-11).
YAKIMA RIVER BASIN 323

South Fork Ahtanum Creek at Conrad Ranch, near Tampico, Wash.

Location.--Lab 46°30'30", long 120°54'50", in SW^ sec. 23, T. 12 N., R. 15 E., on left 

bank at Conrad Ranch, 2|- miles upstream from confluence with North Fork, 2-f miles 

southwest of Tampico, and 20 miles southwest of Yakima.

Drainage area.--24.8 sq mi.

Records available. March 1915 to September 1956 (no winter records prior to water year 

1931).Monthly discharge only for some periods, published in WSP 1316.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 2,400 ft (from 

topographic map). Prior to Aug. 9, 1918, staff gage at same site at datum 1.00 ft 

lower. Aug. 9, 1918, to Mar. 22, 1951, staff gage at present site and datum.

Extremes.--Maximum discharge during year, 196 cfs May 20 (gage height, 2.25 ft); minimum, 

6.2 cfs Oct. 1; minimum gage height, 0.46 ft Oct. 27.

1915-56: Maximum discharge observed, 424 cfs Dec. 23, 1933 (gage height, 3.10 ft), 

from rating curve extended above 80 cfs; minimum observed, 2.6 cfs Aug. 23, 25, 1931 

(gage height, 0.35 ft).

Revisions.--The maximum discharge for the water year 1918 has been revised to 53 cfs 

May 4, 1918 (gage height, 1.98 ft, from graph based on gage readings), superseding 

figures published in WSP 482 and 1316.

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

which are poor. Diversion for irrigation of about 55 acres above station. No 

regulation.

Cooperation.--Gage-height record, 7 discharge measurements, and computations of daily 

discharge furnished by Office of Indian Affairs; 12 discharge measurements made and 

records reviewed by Geological Survey.

Revisions (water years).--WSP 312: 1910. WSP 902: 1939. WSP 1316: Drainage area, 

1943(M).

Rating tables, water year 1955-56, except periods of Lee effect 

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

(Shifting-control method used Apr. 8-21)

Oct. 1 to Apr. 21 Apr. 22 to Sept. 3O

0.44 

.6

6.2

14

l.O 

1.3

1.7

O.7 7.6

.8 12.5

1.0 25

1.3 51

1.6 87

2.0 150

2.2 187

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

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

6.2

6.6

6.6

7.4

7.8

7.4

7.2

7.8

13

12

10

9.5

9.0

9.0

9.O

8.5

8.5

8.2

8.2

8.0

8.0

8.0

8.2

8.2

8.6

7.8

*7.O

7.4

9.5

9.0

7 . 8

259.4

8.37

515

Nov.

7.4

7.8

10

14

13

11

10.5

10

1O.5

15_

12.5

12.5

bll

blO

b9.O

b8.O

b7.5

b7.O

b7.O

b7.5

b8.0

9.O

9.0

9.0

11

11.5

11.5

10.5

10.5

10.5

301.7

10.1

598

Dec.

10.5

10.5

10.5

10

10.5

12.5

1O

9.5

9^

9.5

17

51

36

b30

*24

22

19.5

19.5

b!8

24

33

61

59

*44

37

33

29

26

b23

b22

24

755. 0

24.4

1.5OO

Jan.

20

T9

19

19.5

18.5

17.5

17

17

16

16

15.5

15.5

15.5

15.5

16

16

15

15

15

15

15

15

15

14.5

14.5

14.5

b!2

blO

b9.0

bS.O

b8. 0

469. 0

15.1

93O

Feb.

bS.O

b875

b9.O

b9.5

blO

blO

blO

10

10.5

11

12

12

11.5

11

10

11

12

12.5

T2T

12.5

*12

11.5

11.5

11.5

11

11

10.5

10.5

1O.5

313.5

10.8

622

Mar.

T2^ 10.5

12.5

12.5

12.5

12

12

12

12

12

15

14. S

12.5

14

14.5

17

24

33

43

40

41

50

84

96

125

1O6

80

67

*65

67

67

1,195.5

38.6

2,370

Apr.

58

52

50

58

60

52

49

47

54

74

108

113

*125

14O

165

142

113

96

99

115

142

163

145

113

91

80

77

63

59

55

2,756

91.9

5,47O

May

51

51

50

50

49

49

56

66

78

78

68

58

52

50

53

64

9O

13O

*164

*187

178

*159

154

ISO

*148

145

130

119

122

132

166

3,097

99.9

6,140

June

179

174

161

139

118

101

90

80

75

79

*87

82

78

74

73

72

72

75

74

70

64

70

72

62

60

59

58

*59

58

54

2,569

85.6

5,100

July

53

55

49

48

47

45

44

42

41

39

38

37

36

34

33

31

29

28

*27

36

31

27

25

24

23

*22

22

21

21

2O

2O

1,048

33.8

2.O8O

Aug.

2O

T9

20

19

18.5

*18

17.5

17.5

17

16

16

15.5

15.5

14.5

14.5

14.5

14

14

14

14

*13.5 T4~

*15

16

16

16

15

14.5

14.5

14

13.5

491.0

15.8

974

Sept.

13.5

13

13

*13

12.5

12.5

12.5

12

12

12

16

13

12.5

12.5

12

11.5

11.5

11.5

11

11.5

11.5

11

11

11

10.5

1O.5

10.5

10.5

10.5

11

357.0

11.9

7O8

Calendar year 1955: Max 78 Mln 6.O Mean 14.9 Ac-ft 1O.79O

Water year 1955-56: Max 187 Mln 6.2 Mean 37.2 Ac-ft 27,01O

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Oct. 7-17, 2O-23, Feb. 1-3, 5-20, 22-29, Apr. 29, 3O; discharge estimated on basis of weather records and records for nearby streams.
324 YAKIMA RIVER BASIN

Yakima River near Parker, Wash.

Location. Lat 46°29'40", long 120°26 I 10", in sec. 28, T. 12 N., R. 19 E., on left bank 

700 ft downstream from Sunnyside diversion dam, if miles east of Parker, and 3 miles 

downstream from Ahtanum Creek.

Drainage area. 3,650 sq mi, approximately.

Records available. April 1908 to September 1956. Monthly discharge only for some periods, 

published in WSP 1316. Prior to October 1916, published as "near Wapato."

Gage.--Water-stage recorder. Datum of gage is 886.23 ft above mean sea level (Bureau of 

Reclamation benchmark). Prior to Jan. 1, 1909, hook gage at site 25 ft above headgate 

of Sunnyside Canal at different datum. Jan. 1, 1909, to Dec. 31, 1913, chain gage at 

site 500 ft downstream from Sunnyside Canal at datum 1.82 ft higher than present datum. 

Jan. 1, 1914, to Aug. 16, 1915, chain or staff gage and Aug. 17, 1915, to Feb. 2, 1919, 

water-stage recorder, at site 500 ft downstream from headgate of Sunnyside Canal at 

datum 0.18 ft lower than present datum. Feb. 3, 1919, to Oct. 20, 1940, water-stage 

recorder at present site at datum 0.18 ft lower than present datum. Oct. 21, 1940, to 

Aug. 9, 1953, water-stage recorder at site 1,000 ft downstream from headgate of Sunnyside Canal at datum 0.18 ft lower than present datum.

Extremes Maximum discharge during year, 19,600 cfs May 20 (gage height, 10.91 ft); minimum observed, 20 cfs Oct. 13 (gage height, 0.50 ft); minimum daily, 92 cfs Sept. 17. 

1908-56: Maximum discharge, 65,000 cfs Dec. 23, 1933 (gage height, 15.0 ft, from 

high-water marks); practically no flow for several days during latter part or irrigation season in most years as result of diversions.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are good. Diversions above station for irrigation of about 200,000 acres 

above and 220,000 acres below station. During the irrigation season when Sunnyside 

Canal is carrying water, as much as 18 cfs, depending upon the stage of the canal, is 

released ahead of the fish screens and passes the river and canal gaging stations unmeasured. Some regulation by diversions and by Keechelus, Kachess, Cle Elum, and 

Bumping Lakes, and Tieton Reservoir (see p. 327).

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

which furnished 13 discharge measurements.

Revisions (water years).--WSP 982: 1942. WSP 1122: 1934. WSP 1216: 1949-50, 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 20 May 21 to Sept. 30

2.6 

2.8 

3.0 

3.5 

4.0

160

222

300

575

1,000

5.0

6.0

8.0

11.0

2,220

3,900

8,600

20,000

2.3 

2.6 

3.0 

3.5 

4.0

83

139

270

535

920

5.0 

6.0 

8.0 

11.0

2,060

3,660

8,200

20,000

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.

444

462

434

417 

575

562

439

516

781

1,550

1,480

836

183

575

1,140

1,180

1,240

1,440

1,390

1,390

1,930

1,800

1,740

1,730

1,720

2,300

*2,280

2,240

2,240

*3,560

5, 860

4Z,454

1,369

84,210

Nov.

3,580

3,150

2,860

3,560 

6,060

5,270

4,500

3,940

4,220

6,550

9,270

a7,350

a5,600

a5 , 000

a4,700

4,520

4,770

4,900

4,990

5,250

*5,320

*5, 160

5,450

5,510

5,820

6,200

6,400

5,960

5,820

5,840

157,520

5,251

312,400

Dec.

5,820

5,700

5,600

5,540 

5,600

5,560

5,560

5,580

5,650

5,630

5,820

* 10, 800

12,100

8,370

*8,160

8,130

7,770

7,400

7,150

7,100

7,400

7,850

7,900

7,510

7,080

7,480

7,480

7,080

6,900

6,780

7,050

219,550

7,082

435,500

Jan.

7,350

7,330

7,220

7,510 

7,610

7,530

7,480

7,300

7,100

6,700

5,510

4,770

4,280

4,020

4,020

3,790

*3,620

3,470

3,470

3,380

3,240

3,260

3,260

3,190

3,050

2,870

2,870

b2 , 750

b2,720

2,700

b2,650

146,020

4,710

289,600

Feb.

b2,600

b2,550

b2,500

b2,500 

b2,800

*3,020

2,840

2,820

2,790

2,810

2,940

3,220

3,320

3,200

3,100

2,860

3,050

3,080

3,030

3,070

3,070

2,970

*3,000

2,980

2,980

2,950

2,860

3,190

3,220

85,320

2,942

169,200

Mar.

3,310

3,880

4,300

4,080 

3,820

3,580

3,560

3,500

3,880

4,120

4,040

4,000

4,220

4,600

,4,500

5,340

6,850

7,870

*8,820

10,800

9,860

9,640

10,100

11,900

9,940

10,700

8,800

8,240

8,180

8,710

8, 880

204,020

6,581

404, 700

Apr.

8,050

8,110

7,790

8,440 

8,960

8,030

7,510

7,480

7,430

8,000

9,660

10,700

11,600

12,900

13,500

* 13, 400

11,000

10,300

11,000

*12,700

14,600

17,100

*17,400

13,600

10,600

10,400

11,000

10,500

9,190

8,180

319,130

10,640

633,000

May

7,510

7,050

6,680

6,110 

6,110

6,850

7,740

8,470

10,300

12,500

11,000

8,880

7,950

7,150

7,350

8,740

11,700

14,300

16,900

18,700

*17,600

12,700

12,400

13,800

13,300

12,300

12,100

11,100

10,600

11,500

14,100

333,490

10,760

661,500

June

17,000

16,000

14,200

13,900 

11,900

10,600

9,730

9,100

9,160

10,800

*12,700

11,600

10,600

10,200

10,200

9,670

9,280

8,980

8,900

9,340

8,540

7,350

6,930

6,740

6,300

5,240

4,310

*4,020

3,740

3,280

280,310

9,344

556,000

July

2,700

2,560

*2,620

2,720 

2,800

2,900

2,750

2,560

2,670

2,860

3,220

2,780

2,930

2,670

2,370

2,480

2,310

2,400

2,430

2,500

2,880

2,610

2,490

530

608

857

*561

284 436"

436

315

65,237

2,104

129,400

Aug.

420

464

568

568 

574

548

*404

370

258

202

279

315

330

242

288

270

297

330

297

335

335

288

*258

330

350

614

742

54ff

436

320

310

11,890

384

23,580

Sept.

274

230

198

266 

292

226

242

216

216

306

649

*950 SB"!

404

270

137

92

iW

111

138

143

132

216

212

258

270

292

283

240

376

8,353

278

16,570

Calendar year 1955: Max 18,000 Mln 183 Mean 2,505 Ac-ft 1,813,000

Water year 1955-56: Max 18,700 Mln 92 Mean 5,118 Ao-ft 3,716,000

* 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 Klona.

b Stage-discharge relation affected by ice.
YAKIMA RIVER BASIN 325

Yaklma River near Parker, Wash. Continued

Monthly discharge of Yaklma River and canals near Parker, Wash., water 

year October 1955 to September 1956

Month

Calendar year 

1955.

May .............

July............

September .......

Water year 

1955-56.

Mean discharge In cubic feet per second

Yakima 

River 

near 

Parker

1,369 

5,251 

7,082

2,505

4,710 

2,942 

6,581 

10,640 

10,760 

9,344 

2,104 

384 

278

5,118

Roza 

Canal 

at mile 

26.9

320 

0 

0

411

0 

0 

110 

539 

790 

776 

948 

838 

578

410

Union Gap 

Canal 

(estimated)

12 

0 

0

19

0 

0 

0 

24 

34 

36 

39 

35 

26

17

New 

Reservation 

Canal

331 

0 

0

880

0 

0 

0, 

912 

2,032 

1,974 

1,887 

1,780 

1,358

859

Old 

Reservation 

Canal

3

7 

13

15

10 

9 

6 

30 

74 

14 

32 

0 

0

17

Sunny - 

side 

Canal

432 

0 

0

643

0 

0 

131 

884 

,216 

,221 

,267 

,265 

,034

622

Combined 

flow of 

Yakima 

River and 

canals

2,467 

5,258 

7,095

4,473

4,720 

2,951 

6,828 

13,030 

14,910 

13,360 

6,277 

4,302 

3,274

7,043

Combined 

flow of 

Yakima 

River and 

canals 

(acre-feet)

151,700 

312,900 

436,300

3,242,000

290,200 

169,700 

419,800 

775,300 

916,800 

795,000 

386,000 

264,500 

194,800

5,113,000

Note. New Reservation, Old Reservation, and Sunnyside Canals divert from river above station and 

below Union Gap. Roza and Union Gap Canals head above Union Gap, but records given herein show flow 

In these canals that reaches the valley below Union Gap. Records for Roza and Sunnyside Canals furnished by Bureau of Reclamation. Records for Union Gap Canal estimated on basis of discharge measurements and records of flow at canal headworks. Combined flow represents flow of Yakima River that 

reaches valley below Union Gap.
326 YAKIMA RIVER BASIN

Yakima River at Kiona, Wash.

Location. Lat 46°15 I 10", long 119 Q 28'50", in sec. 19, T. 9 N., R. 27 E., on left bank 

Just upstream from highway bridge at Kiona, 3j miles downstream from intake of Kiona 

Canal and 25 miles upstream from mouth.

Drainage area. 5,600 sq mi, approximately.

Records available. August to December 1895 (gage heights only, fragmentary), August 1896 

to March 1915, February 1933 to September 1956.

Gage_.--Water-stage recorder. Datum of gage is 454.41 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Mar. 31, 1915, several staff or chain 

gages at approximately same site and datum Feb. 6, 1933, to July 26, 1934, tape gage 

at present site and datum.

Extremes. Maximum discharge during year, 20,100 cfs May 22 (gage height, 12.73 ft); minimum, 1,650 cfs July 31 (gage height, 3.59 ft).

1896-1915, 1933-56: Maximum discharge, 67,000 cfs Dec. 23, 1933 (gage height, 

21.57 ft, from high-water marks); minimum observed, 105 cfs Sept. 11, 1906 (gage height, 

2.35 ft, datum then in use).

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

diverted above gage for irrigation of about 424,000 acres. Some regulation by diversions and by Keechelus, Kachess, Cle Elum, and Bumping Lakes, and Tieton Reservoir 

(see following page). The Kiona Canal bypasses station with a mean flow of approximately 23 cfs for irrigation of about 1,100 acres below station. Records of chemical 

analyses and water temperatures for the water year 1956 are given in WSP 1453.

Revisions (water years) . WSF 214: 1905. WSP 1122: 1934(M). WSP 1216: 1949-50, 

drainage area. WSP 1286: 1907(M), 1909, 1936.

Rating tables, water year 1955-56, except period of ice effect (gage 

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

Oct. 1 to May 22 May 23 to Sept. 30

4.4 2,330

5.0 3,130

7.0 6,260

10.0 12,400

13.0 21,000

3.7 1,750

4.0 2,030

5.0 3,180

7.0 6,380

10.0 12,500

13.0 20,800

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.

2,400

2,500

2,460

2,430

2.570

2,410

2,520

2,400

2,460

2,720

3,330

3,460

3,160

2,780

2,750

3,180

3,160

3,190

3,200

3,070

3,060

3,330

3,180

2,950

2,920

2,880

3,260

*3,340

3,320

3,330

4,390

91,910

2,965

182,300

Nov.

4,830

4,580

4,240

4.000

4,660

6,510

6,070

5,480

5,060

5,220

7,120

9.140

7,750

6,390

5,840

5,500

5,390

5,600

5,750

5,890

6,110

6,110

6,140

6,310

6,400

7,300

7,930

8,060

7,410

7,210

184,000

6,133

365,000

Dec.

7,210

7,140

6,980

6,840

6,780

6,840

6,730

6.710

6,780

6,780

6,760

7,990

12,500

13,300

10,300

*9,580

9,480

9,080

8,660

8,320

8,600

12,200

* 15, 100

12,000

10,700

10,500

10,800

10,400

9,440

8,920

8,640

282,060

9,099

559,500

Jan.

8,8QO

8,840

8,760

9,040

10.500

10,100

9,760

9,540

9,240

8,920

8,520

7,390

6,690

6,180

6,020

6,160

6,160

5,920

5,840

5,780

5,650

5,480

5,410

5,350

5,230

5,030

*4,790

4,590

4,500

4,500

4,160

212,650

6,860

421,800

Feb.

3,510

2.990

b3 , 100

b3,300

b3,380

b3,430

b3,440

b3,550

b3,800

4,040

4,220

4,610

4,930

4,740

4,550

4,240

4,120

4,340

4,360

4,380

5.840

4,950

4,420

4,330

4,320

4,360

4,280

4,280

5,010

-

120,820

4,166

239,600

Mar.

4.850

5,650

6,020

6,110

5,850

5,680

5,500

5,480

5,270

5,580

5,650

5,580

5,580

5,780

6,060

6,040

*6,800

8,060

9.O40

9,920

11,400

11,600

12,000

12,700

14,100

14.200

13,900

12,700

11,700

11,500

11,700

262,000

8,452

519,700

Apr.

11,900

11,500

10,900

10,600

11,000

11,700

11,100

10,500

10.500

10,500

10,500

11,400

12,500

13,300

14,200

15,200

16,000

14,900

* 13, 400

13,200

13,800

15,000

17,400

19,100

17,800

15,000

13,500

13,600

13,600

12,500

395,700

13,190

784,900

May

11,000

10, 100

9,700

9,360

8,840

8.580

9,220

10, 100

11,000

12,400

14,200

14,100

12 , 100

10,900

10, 100

9,840

10,700

12,700

14,400

16,800

18,700

*19.800

17,600

15,800

*16,200

16,500

15,900

15,600

14 , 900

14,300

14,400

405,840

13,090

805,000

June

15,700

17,800

18.900

18,100

17,400

16,200

15,000

14,000

13,000

12,800

14 , 100

15,300

15,400

14,500

14,000

13,800

13,300

12,800

12,200

11,900

12,000

11,400

10,100

9,540

9,240

8,500

7,370

6,180

5,810

5.430

381,770

12,730

757,200

July

4.950

4,410

4,300

4,370

4,490

*4,610

4,650

4,480

4,290

4,240

4,250

4,530

4,190

4,270

4,050

3,760

3,760

3,590

3,620

3,600

3,720

4,030

3,860

3,860

2,720

2,200

2,420

2,270

2,090

2,030

2.000

115,590

3,729

229,300

Aug.

1,950

1,910

2,010

2,090

2,100

2,100

2,090

2,010

*1,960

1,880

1,810

1,790

1,830

1,820

1,770

1.760

1,770

1,810

1,850

1,880

1,890

1,880

1,920

1,960

2,060

2,120

2,370

2.600

2,570

2,570

2,450

62,580

2,019

124,100

Sept.

2,430

2,550

2,310

2,250

2,230

2,220

2,210

2,250

2,190

2,190

2,180

2,410

2,720

2,530

2,380

2,310

2,220

2,140

2,080

2,090

*2.010

2,030

2,070

2,140

2,180

2,190

2,180

2,200

2,200

2,180

67,050

2,235

133,000

Calendar year 1955: Max 17,800 Min 1,180 Mean 3,827 Ac-ft 2,771,000

Water year 1955-56: Max 19,800 Mln 1,760 Mean 7,055 Ao-ft 5,121,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
YAKIMA RIVER BASIN 327 

Reservoirs in Yakima River basin, Wash.

Keechelus Lake. Lat 47°19'20", long 121°20'20", in NE£ sec. 12, T. 21 N., R. 11 E., at 

dam on Yakima River at outlet of Keechelus Lake, 3^ miles northwest of Martin and 

9y miles northwest of Easton. Drainage area, 55.8 sq mi. Records available, January 

1906 to September 1956. Staff gage read twice daily. Datum of gage is at mean sea 

level (Bureau of Reclamation benchmark). Maximum contents observed during year, 

158,130 acre-ft July 3 (elevation, 2,517.14 ft); minimum observed, 50,030 acre-ft 

Apr. 11 (elevation, 2,462.83 ft). Maximum contents observed during period 1906-56, 

160,570 acre-ft May 16. 1925 (elevation, 2,518.09 ft); minimum observed, 448 acre-ft 

Sept. 6, 12, 13, 1906 (original crib dam); minimum elevation observed, 2,428.30 ft 

Sept. 20, 1926.

Reservoir is formed on natural lake by earth- and gravel-fill dam comp'.tsj ir 1217; 

storage began above crib dam Jan. 12, 1906, above present dam Aug. 19, I'.-1 To a!3 V. 

construction and clearing of reservoir site, the water surface was kept low an-.- >ji-:.- 

reservoir was not filled until June 15, 1920. Capacity, 157,800 acre-ft belvu?-- gate 

sill (elevation, 2,425.00 ft), and spillway crest (elevation, 2,517.00 ft). Spillway 

raised 2 ft, construction completed Sept. 12, 1952. Records given herein represent 

usable contents. Water used for irrigation.

Kachess Lake. Lat 47°15 I 50", long 121 =12 "00", in SW£ sec. 34, T. 21 N., R. 13 E., at dam 

on Kachess River at outlet of Kachess Lake, 2| miles northwest of Easton. Drainage 

area, 63.6 sq mi. Records available, September 1905 to September 1956. Staff gage 

read twice daily. Datum of gage is at mean sea level (Bureau of Reclamation benchmark). 

Maximum contents observed during year, 240,390 acre-ft July 3 (elevation, 2,262.31 ft); 

minimum observed, 137,290 acre-ft Apr. 9-11 (elevation, 2,237.80 ft). Maximum contents 

observed during period 1905-56, 243,070 acre-ft June 13, 1955 (elevation, 2,262.90 ft); 

minimum observed, 525 acre-ft Sept. 14, 15, 1910 (original crib dam); minimum elevation 

observed, 2,197.73 ft Sept. 26, 27, 1915.

Reservoir is formed on natural lake by earth- and gravel-fill dam completed in 1912. 

Original crib dam creating capacity of 21,000 acre-ft used Sept. 20, 1905, to June 30, 

1911. Storage above present dam began June 30, 1911. Capacity, 239,000 acre-ft between 

gate sill (elevation, 2,192.75 ft) and top of spillway gate (elevation, 2,262.00 ft). 

Records given herein represent usable contents. Water used for irrigation.

Cle Elum Lake.--Lat 47°14 I 40", long 121°04'00", in NE£ sec. 10, T. 20 N., R. 14 E. , at dam 

on Cle Elum River at outlet of Cle Elum Lake, 4 miles northwest of Roslyn. Drainage 

area, 203 sq mi. Records available, May 1906 to September 1956. Staff gage read twice 

daily. Datum of gage is at mean sea level (Bureau of Reclamation benchmark). Maximum 

contents observed during year, 441,770 acre-ft July 15, 16 (elevation, 2,241.00 ft); 

minimum observed, 155,420 acre-ft Apr. 13 (elevation, 2,170.84 ft). Maximum contents 

observed during period 1906-56, 443,700 acre-ft May 31, 1945, May 28, 1949 (elevation, 

2,241.40 ft); minimum observed, 2,380 acre-ft Aug. 31, 1906; minimum elevation observed, 

2,114.35 ft Oct. 14, 1932. Storage was uncontrolled Oct. 3, 1931, to Feb. 26, 1932.

Reservoir is formed on natural lake by earth- and gravel-fill dam completed in 1933; 

storage began above present dam Feb. 26, 1932. Capacity, 436,900 acre-ft between gate 

sill (elevation, 2,110.00 ft) and top of spillway gate (elevation, 2,240.00 ft). Records given herein represent usable contents. Water used for irrigation.

Revisions (water years) , WSP 1182: 1948-49.

Bumping Lake. Lat 46=52', long 121°18', in SW£ sec. 23 (unsurveyed), T. 16 N., R, 12 E., 

at (Jam on Bumping River at outlet of Bumping Lake, ll| miles upstream from American 

River, and 19 miles west of Nile. Drainage area, 68.6 sq mi. Records available, June 

to July 1906, April 1909 to September 1956. Staff gage read twice daily. Datum of gage 

is at mean sea level (Bureau of Reclamation benchmark). Maximum contents observed 

during year, 36,630 acre-ft June 1 (elevation, 3,428.20 ft); minimum observed, 3,190 

acre-ft Mar. 20-22 (elevation, 3,393.99 ft). Maximum contents observed during period 

1906, 1909-56, 39,840 acre-ft June 21 22, 1925 (elevation, 3,430.55 ft); minimum observed, 1,130 acre-ft Feb. 5-9, 1949 (elevation, 3,390.80 ft).

Reservoir is formed on natural lake by earth-fill dam completed in 1910; storage 

began Nov. 3, 1910. Capacity, 33,700 acre-ft between gate sill (elevation, 3,389.00 ft) 

and spillway crest (elevation, 3,426.00 ft). Records given herein represent usable contents. Water used for irrigation.

Tieton Reservoir. Lat 46°39'10", long 121°07'30", in SW£ sec. 31 (unsurveyed), T. 14 N., 

R. 14 E., on face of dam on Tieton River, at spillway, at Rimrock, 2,000 ft upstream 

from Wildcat Creek, 7| miles upstream from headworks of Tieton Canal and 22| miles 

southwest of Naches. Drainage area, 187 sq mi. Records available, April 1925 to September 1956. Staff gage read twice daily. Datum of gage is at mean sea level (Bureau 

of Reclamation benchmark). Maximum contents observed during year, 199,800 acre-ft 

July 12 (elevation, 2,926.71 ft); minimum observed, 86,880 acre-ft Apr. 14 (elevation, 

2,871.85 ft). Maximum contents observed during period 1925-56, 201,380 acre-ft June 21, 

1937 (elevation, 2,927.33 ft); minimum observed, 89 acre-ft Oct. 12, 19S6 (elevation, 

2,766.77 ft).

Reservoir is formed by earth- and gravel-fill dam completed in 1925; storage began 

Apr. 27, 1925. Capacity, 198,000 acre-ft between sill of tunnel entrance (elevation, 

2,766.00 ft) and crest of spillway gates (elevation, 2,926.00 ft). Records given herein 

represent usable contents. Water used for irrigation.

Cooperation. Records furnished by Bureau of Reclamation, reviewed and prepared for publication by Geological Survey.
328 YAKIMA RIVER BASIN

Reservoirs In Yaklma River basin, Wash. Continued 

Month-end elevation and usable contents, water year October 1955 to September 1956

Date

Calendar year 1955

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

Water year 1955-56

Date

Calendar year 1955

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

Water year 1955-56

Date

Calendar year 1955

Water year 1955-56

Keechelus Lake

Elevation 

(feet)t

2,471.72 

2,479.74 

2,490.83 

2,482.72

-

2,475.01 

2,473,40 

2,465.56 

2,478.07 

2,508.86 

2,516.77 

2,506.28 

2,479.36 

2,472.24

-

Contents 

(acrefeet)

63,460 

76,880 

97,750 

82,210

-

68,810 

66,160 

54,010 

73,980 

137,530 

157,180 

131,410 

76,220 

64,290

-

Change in 

contents 

(acre-feet)

+13,420 

+20,870 

-15,540

+5,810

-13,400 

-2,650 

-12,150 

+19,970 

+63,550 

+19,650 

-25,770 

-55,190 

-11,930

+830

Cle Elum Lake

2,188.85 

2,196.25 

2,213.84 

2,209.86

-

2,202.01 

2,194.96 

2,177.73 

2,191.63 

2,234.10 

2,235.26 

2,235.43 

2,211.20 

2,190.83

-

219,240 

247,420 

318,900 

302,240

-

270,210 

242,410 

179,020 

229,680 

408,950 

414,380 

415,180 

307,810 

226,660

-

+28,180 

+71,480 

-16,660

+4,060

-32,O30 

-27,800 

-63,390 

+50,660 

+179,270 

+5,430 

+800 

-107,370 

-81,150

+7,420

Tieton Reservoir

2,886.37 

2,894.51 

2,898.65 

2,894.31

-

2,884.34 

2,880.94 

2,876.94 

2,891.00 

2,922.89 

2,924.93 

2,919.19 

2,904.42 

2,888.71

-

112,190 

127,810 

136,120 

127,410

-

108,460 

102,340 

95,380 

120,950 

190,250 

195,310 

181,300 

148,140 

116,580

-

+15,620 

+8,310 

-8,710

-2,050

-18,950 

-6,120 

-6,960 

+25,570 

+69,300 

+5,060 

-14,010 

-33,160 

-31,560

+4,390

Ka chess Lake

Elevation 

(feet)t

2,241.57 

2,246.45 

2,251.13 

2,247.58

-

2,243.32 

2,241.97 

2,238.95 

2,245.64 

2,260.02 

2,262.10 

2,258.15 

2,250.05 

2,241.99

-

Contents 

(acrefeet)

151,870 

171,540 

191,160 

176,210

-

158,820 

153,450 

141,690 

168,210 

230,050 

239,430 

221,710 

186,570 

153,530

-

Change in 

contents 

(acre-feet)

+19,670 

+19,620 

-14,950

-11,420

-17,390 

-5,370 

-11,760 

+26,520 

+61,840 

+9,380 

-17,720 

-35,140 

-33,040

+1,660

Bumping Lake

3,402.31 

3,410.42 

3,410.25 

3,399.56

-

3,394.22 

3,394.01 

3,394.04 

3,408.03 

3,428.02 

3,427.26 

3,421.80 

3,411.62 

3,406.42

-

9,040 

16,000 

15,840 

7,000

-

3,340 

3,200 

3,220 

13,780 

36,380 

35,370 

28,420 

17,180 

12,370

-

+6,960 

-160 

-8,840

-1,060

-3,660 

-140 

+20 

+10,560 

+22,600 

-1,010 

-6,950 

-11,240 

-4,810

+3,330

t Elevation estimated at 12 p.m. from twice-daily gage readings.
ESQUATZEL COULEE BASIN 329

Providence Coulee at Cunningham, Wash.

Legation. Lat 46°49'20", long 118°48'30", near township line in NW£ sec. 4, ,T. 15 H., R. 

32 E., on right bank on upstream side of Northern Pacific Railway bridge at Cunningham.

Drainage area.--27.8 sq mi.

Records available. January 1953 to September 1956.

Gage..--Water-stage recorder. Altitude of gage is 1,160 ft (from topographic map).

Extremes. Maximum discharge during year, 2,160 cfs Feb. 21 (gage height, 10.04 ft); no 

flow for long periods.

1953-56: Maximum discharge, that of Feb. 21, 1956; no flow most of each year.

Remarks.--Records poor. No known regulation or diversion.

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

Day

1

2

3

t

*>

t;'f

8

IS

10

11

r?

1.5

11

15

IS

17

18

19

20

21

22

23

24

25

26

27

28

29

;o

2.1

Ibtal

Mean

C'fsm

]n.

Ac -ft

Oct.

(*)

0

0

0

0

0

Nov.

(*)

0

0

0

0

0

Dec .

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

*20

*.6

0

0

0

0

0

0

0

0

20.6

0.66

0.024

0.03

41

Jan.

0

0

0

*90

*1.4

*0

0

0

0

0

0

0

0

0

0

2.6

1.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

*0

95.2

3.07

0.110

0.13

189

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*695 ~~6.2

**9.7

1.1

0

0

0

0

0

712.0

24.6

0.885

0.95

1,410

Mar.

(*)

(*)

0

0

0

0

0

Apr.

(*)

0

0

0

0

0

May

0

0

0

0

0

0

0

*o 2.7

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

*0

0

0

0

0 

0

2.7

0.09

0.0032

0.004

5.4

June

(*)

(*)

0

0

0

0

0

July

( )

0

0

0

0

0

Aug.

(*)

0

0

0

0

0

Sept.

(*)

0

0

0

0

0

Calendar year 1955: Max 44 Min 0 Mean 0.22 Cfsm 0.0079 In. 0.11 Ac-ft 157

Water year 1955-56: Max 695 Min 0 Mean 2.27 Cfsm 0.082 In. 1.11 Ac-ft 1,650

Discharge measurement or observation of no flow made on this day. 

* Field estimated made on this day.
330 ESQUATZEL COULEE BASIN

Esquatzel Coulee at Connell, Wash.

Loeati.on.--Lat 46°39'40", long 118°51'40", In NE^ sec. 36, T. 14 N., R. 31 E., on right 

bank 30 ft donnstream from Main Street in Connell.

Drainage area. 240 sq mi.

Records available.--January 1953 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 840 ft (from topographic map).

Extremes. Maximum discharge during year, 5,560 cfs Feb. 21 (gage height, 12.68 ft), from 

rating curve extended above 1,300 cfs on basis of slope-area determinations at gage 

heights 9.00 and 12.68 ft; no flow for long periods.

1953-56: Maximum discharge, that of Feb. 21, 1956; no flow most of each year.

Remarks.--Records fair. No known regulation or diversion.

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

Day

1

2

3

4

5

6

7

8

9

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 sin

In .

Ac-ft

Oct.

(*)

0

0

0

0

0

Nov.

(*)

(*)

(*)

0

0

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

*27

 15.5

.7

0

0

0

0

0

0

0

43.2

1.39

0.0058

0.007

86

Jan.

0

0

0

*405

*64

*3.2

.1

0

0

0

0

0

0

0

0

0

36

2.1

.1

0

0

0

0

0

0

0

0

0

0

*0

0

510.5

16.5

0.069

0.08

1,010

Feb.

0

0

0

0

0

0

0

0

0

0

0

55

59

7.1

2.2

0

0

0

0

0

*2.160

*286

50

26

6

4

1.4

.2

0

2,656.9

91.6

0.382

0.41

5,270

Mar.

(*)

(*)

0

0

0

0

0

Apr.

(»)

0

0

0

0

0

May

0

TJ

0

0

0

0

0

157

101

*0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

*0

0

0

0

0 

0

258

8.3

0.035

0.04

512

June

0

0

0

0

o

July

0

2.4

£.5

0

0

*0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

4.9

0.16

O. 00067

0 . 0008

9.7

Aug.

(*)

0

0

0

o

0

Sept.

(*)

(*)

0

0

0

0

0

Calendar year 1955: Max 47 Mln 0 Mean 0.28 Cfsm O.0012 In. O.016 Ac -ft 203

Water year 1955-56: Max 2,160 Mln 0 Mean 9.49 Cfsm 0.040 In. O.54 Ac-ft 6,89O

Discharge measurement or observation of no flow made on this day.
ESQUATZEL COULEE BASIN 331

Esquatzel Coulee at Eltopla, Wash.

Location.--Lat 46°27i40", long 119°01'00", In SE$ sec. 2, T. 11 N., R. 30 E., on left bank 

on upstream side of Northern Pacific Railway bridge at Eltopla.

Drainage area.--394 sq ml.

Records available. January 1953 to September 1956.

Gage.--Water-stage recorder. Altitude of gage Is 580 ft (from topographic map).

Extremes.--Maximum discharge during year, 3,740 cfs Feb. 22 (gage height, 18.23 ft); no 

flow during most of year.

1953-56: Maximum discharge, that of Feb. 22, 1956; no flow during most of each 

year.

Remarks. Records fair. Considerable regulation by natural pondage In Esquatzel Coulee 

near Mesa. No known diversions.

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

in cubic feet per second)

Oct. 1 to Feb. 22

4.3

4.6

5.0 

5.5 

6.0 

7.0

0 8.0

10.0

12.0

14.0

16.0

239

5.9 513

16

34

61

138

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

1,340

1,900

4.3 

4.6 

5.0 

5.5

5.0

Feb. 22 to Sept. 30

0 

5.9

7.0

8.0

10.0

12.0

14.0

141

260

610

1,120

1,780

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

(*)

0

0

0

Dec.

C)

ft

0

0

0

Jan.

0

0

0

0

*50

*37

2.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

89.1

2.87

177

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*564

*1.770

184

84

38

9.0

.5

0

0

2,649.5

91.4

5,260

Mar.

C)

0

0

0

Apr.

0

0

0

May

(*)

(*)

(*)

(»)

0

0

0

June

0

0

0

July

(»)

0

0

0

Aug.

(*)

0

0

0

Sept.

(«)

0

0

0

Calendar year 1955: Max 0 Min 0 Mean 0 Ac-ft 0

Water year 1955-56: Max 1,770 Min Q Mean 7.48 Ac-ft 5,440

Discharge measurement or observation of no flow made on this day.

41-7240 O -58 -23
332 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Measurements of streamflow in the Pacific slope basins in Washington and upper Columbia 

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.

Discharge measurements made at points other than gaging stations in th 

in Washington and upper Columbia River basin during the wate

Pacific slope basins 

r year 1956

Chehalis River basin. Wash.

Stream

Wynoochee

River.

Mooney Creek.

Black Creek. .

Wynoochee

River.

Tributary to

Chehalis

River .

Wynoochee

River.

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

Chehalis

River .

Location

NWjSEj sec. 28, T. 18 N., R. 8

W., 4 miles northwest of Montesano.

SW£UE£ sec. 33, T. 18 N., R. 8

W., at road crossing, i mile

above mouth and 3 miles northwest of Montesano.

Sj sec. 24, T. 18 N., R. 8 W., at

road crossing, 3 miles northwest of Montesano.

NW£NW£ sec. 35, T. 18 N., R. 8

W., at former gaging-station

site below Black Creek near

Montesano.

Drainage 

area 

(sq mi)

146

3.87

19.3

178

Measured 

previously 

(water 

years)

1955

1942-1955

1942-1955

Date

Aug. 28

Sept. 17

Aug. 28

Sept. 17

Aug. 28

Sept. 17

June 13

July 17

Aug. 28

Sept. 17

Discharge 

(cfs)

*12O

*126

*1.12

*2.55

*2.46

*6.65

1,250

 495

 148

 144

Chambers 

Creek.

Leach Creek. .

Chambers Bay, 

Puget 

Sound.

Chambers 

Creek.

Chambers Creek basin, Wash

SEjSEi sec. 27, T. 20 N., R. 2 E., 

4O ft above fish hatchery diversion and l£ miles northwest of 

Lakewood Center.

SWiNEj sec. 23, T. 20 N., R. 2 E., 

at West 53rd St. crossing, at 

Tacoma.

1/3 mile above mouth and 4 miles 

northeast of Steilacoom.

79.2 

a6.63

1944 1949

Mar. 27 

Apr. 23 

May 31 

July 6 

Aug. 15

Aug. 16

204 

130 

*69.9 

*50.5 

*33.0

*4.28

Duwamish River basin, Wash.

Big Soos 

Creek.

.. ..do.. .... . SE|NE| sec. is, T. 21 N., R. 5 E.,

2^ miles east of Auburn.

54.9 Apr. 19 

May 18 

June 20 

July 3 

Aug. 16

121 

62.5 

*48.5 

*30.8 

 20.2

Lake Washington basin, Wash.t

Unnamed

tributary .

May Creek ....

Do. ......

Etta Cartney

Creek.

Coal Creek. ..

Do .......

Lake Washington.

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

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

May Creek ....

Lake Washington.

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

SEj sec. 30, T. 24 N., R. 5 E.,

at road crossing on Mercer

Island.

NW£ sec. 7, T. 23 N., R. 6 E., at

highway crossing, 4^ miles east

of Renton. 

East line of sec. 3, T. 23 N., R. 5

E., at county road crossing, 

3 miles northeast of Renton.

NWi sec. 34, T. 24 N., R. 5 E., at

county road crossing, 3 miles

northeast of Renton.

SE£ sec. 26, T. 24 N., R. 5 E., at

county road crossing, 4 miles

northeast of Renton.

W| sec. 16, T. 24 N., R. 5 E., at

highway crossing near mouth,

3 miles south of Bellevue.

-

2.74

6.98

.92

2.02

6.73

1945

1945

1945-46

1945

1945

1945-46

1955

Aug. 15

1955

Aug. 16

Sept. 6 

1955

June 27 

July 15

Aug. 8

Sept. 6

1956

July 31

Aug. 27

Sept . 4

1955

Aug. 17

Sept. 6

1955

Aug. 17

Sept. 6

1955

June 27

July 15

Aug. 5

Sept. 8

Oct. 10

Oct. 26

1956

May 16

July 31

Sept. 4

bO.02

*.28

*.18

*2.02 

*1.25

*1.14

*.73

*.61

*.82

*.54

0

0

0

0

*3.86

*3.00

*2.61

*2.31

*3.71

*9.23

*4.53

*2.61

*2.24

Base flow.

t Includes some discharge measurements made during water year 1955. 

a Of which 2.52 sq mi does not contribute to surface runoff. b Estimated.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements 

in Washington and

made at points other than gaging stations in the Pacific slope basins 

upper Columbia River basin during the water year 1956--Continued

Lake Washington basin. Wash. Continued t

Stream

Mercer Creek.

Do ...

North Branch

Mercer

Creek.

Mercer Creek.

South Fork

Mercer

Creek

(formerly

Eaton

Creek) .

Sturtevant

Creek.

Unnamed

tributary .

Forbes Creek.

Juanita Creek

Do .......

Unnamed

tributary .

Do .......

Do.. .....

Fhanton Lake

Creek.

Unnamed

tributary .

Do ...... .

Do ...... .

Tributary to

Lake Washington.

Mercer Creek.

Lake Washington.

Mercer Creek .

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

Lake Washington.

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

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

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

Lake Sammamish.

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

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

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

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

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

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

Location

SWiSWi sec. 26, T. 25 N., R. 5

E., at private road crossing,

3 miles east of Bellevue. 

NWiSEi sec. 27, T. 25 N., R. 5

E., 15 ft above North Branch 

Mercer Creek at county road

crossing and 2; miles east of

Bellevue .

NWiSEi sec. 27, T. 25 N., R. 5

E . , at mouth at county road

crossing, 2-J miles east of

Bellevue.

SWiSWi (revised) sec. 27, T. 25

N., R. 5 E., at county road

crossing, 2 miles east of

Bellevue.

HWiSWi sec. 3, T. 24 N., R. 5 E.,

at private road crossing,

\ mile above mouth and 2 miles

southeast of Bellevue.

Ei sec. 32, T. 25 N., R. 5 E., at

county road crossing., £ mile

east of Bellevue.

NWi sec. 20, T. 25 N., R. 5 E.,

at highway crossing, 2 miles

south of Kirkland.

Ei sec. 32, T. 26 N., R. 5 E.,

200 ft above gravel company

reservoir and \ mile north of

Kirkland .

North line of sec. 29, T. 26 N.,

R. 5 E., at county road crossing, 2 miles north of Kirkland.

SEi sec. 30, T. 26 N., R. 5 E.,

at former gaging-station site

near Kirkland.

SWi sec. 13, T. 25 N., R. 5 E.,

at highway crossing, 1-j miles

south of Redmond.

NEi sec. 24, T. 25 N., R. 5 E.,

at highway crossing at Idylwood, 2 miles 'south of Redmond.

NEiSWj sec. 36, T. 25 N., R. 5

E., at highway crossing at

Junction with Bellevue Road,

4 miles east of Bellevue.

SWi sec. 1, T. 24 N., R. 5 E.,

at highway crossing, 4^ miles

east of Bellevue.

SWi sec. 12, T. 24 N., R. 5 E.,

at highway crossing, i mile

north of Vasa Park and 4 miles

northwest of Issaquah.

NWiNEi sec. 13, T. 24 N., R. 5 E.

at Vasa Park, 4 miles northwest

of Issaquah.

SWi sec. 18, T. 24 N., R. 6 E.,

at highway crossing, 3 miles

northwest of Issaquah.

Drainage 

area 

(sq mi)

1.03

1.61

2.96

6.91

3.28

1.24

1.94

.

3.67

5.50

.12

.59

.17

1.70

.35

.22

1.55

Measured 

previously 

(water 

years)

1945

1945

1945

1945-46

1945-46

1945

1945

1945

1945-46

1946

1945

1945

1945

. 1945

1945

1945

1945

Date

1955

Aug. 17

Sepb. 6 

1955

Aug. 17 

Sepb. 6

1956

Aug. 1

1955

Aug. 17

Sept. 6

1956

Aug. 1

1955

June 27

Aug. 5

Sept . 6

Oct. 10

1956

Aug. 1

Sept. 5

1955

June 27

July 15

Aug. 5

Sept. 6

Oct. 10

1956

Aug. 1

Sept. 5

1955

Aug. 17

Sept. 6

1955

Aug. 17

Sept. 6

1955

Aug. 17

1955

June 28

Aug. 5

Sept. 9

1955

June 28

July 15

Aug. 5

Sept. 9

1956

July 31

Sept. 4

1955

Aug. 17

Sept. 9

1955

Sept. 9

1955

Aug. 18

Sept. 9

1955

Aug. 18

Sept. 9

1955

Aug. 18

Sept. 9

1955

Aug. 18

Sept. 9

1955

Aug. 18

Sept. 9

Discharge 

(cfs)

*1.33

*.98

*1.89 

*1.Z7

*1.32

*.55

*.35

*.5',

*3.14

*3.01

*2.04

6.10

*2.10

*2.32

*1.88

*1,25

*1.50

*1.10

3.03

*1.59

*1.42

b.Ol

b.10

*.62

*.33

*.08

*2.58

*1.02

*.86

*4.96

*1.99

*1.68

*1.65

*2.22

*1.40

*.03

*.19

b.02

b.03

b.Ol

b.Ol

0

0

0

*.67

*.72

*.10

*.20

* Base flow.

t Includes some discharge measurements made during water year 1955.

b Estimated.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements 

in Washington and

made at points other than gaging stations in the Pacific slope basins 

upper Columbia River basin during the water year 1956 Continued

Lake Washington basin, Wash. Continuedt

Stream

Tibbetts

Creek.

Carey Creek

(formerly

Issaquah

Creek) .

Holder Creek

Unnamed

tributary.

Issaquah

Creek.

Unnamed

tributary .

Do...... .

McDonald

Creek.

Fifteen Mile

Creek 

(formerly

unnamed

tributary)

Unnamed

tributary

Do...... .

Do ...... .

East Fork

Issaquah

Creek.

Do...... .

Do .......

North Fork

Issaquah

Creek

(formerly

Jordan

Creek)

Tributary to

Lake Sammamish.

Issaquah

Creek.

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

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

Lake SammamIsh.

Issaquah

Creek.

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

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

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

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

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

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

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

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

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

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

Location

NE£ sec. 29, T. 24 N., R. 6 E.,

at highway crossing, 1 mile

northwest of Issaquah.

West line of sec. 6, T. 22 N.,

R. 7 E., at county road crossing, J mile north of Hobart .

NW^SWi sec. 31, T. 23 N . , R. 7

E. (revised), at county road

crossing, 1 mile north of

Hobart .

NEi sec. 26, T. 23 N., R. 6 E.,

at county road crossing,

3 miles northwest of Hobart.

SE^ sec. 22, T. 23 N., R. 6 E.,

at county road crossing, 4^

miles south of Issaquah.

NWi sec. 22, T. 23 N., R. 6 E.,

at mouth, about 5 mile above

Issaquah Creek gaging station

and 4 miles south of Issaquah.

NE£ sec. 17, T. 23 N., R. 6 E.,

at county road crossing, 3^

miles southwest of Issaquah.

SE^ sec. 16, T. 23 N., R. 6 E.,

600 ft above mouth and 3j

miles south of Issaquah.

NW£ sec. 15, T. 23 N., R. 6 E.,

at county road crossing, Similes south of Issaquah.

North line of sec. 15, T. 23 N.,

R. 6 E., at road crossing,

3 miles south of Issaquah.

North line of sec. 10, T. 23 N.,

R. 6 E., at road crossing,

2 miles south of Issaquah.

NE| sec. 3. T. 23 N., R. 6 E.

(revised), at road crossing,

1 mile south of Issaquah.

NE£ sec. 32, T. 24 N., R. 7 E.,

at road crossing opposite

U. S. Highway 10 Junction,

i mile west of Preston.

SE{ sec. 25, T. 24 N., R. 6 E.,

at U. S. Highway 10 crossing,

2j miles east of Issaquah.

SE£ sec. 27, T. 24 N., R. 6 E.,

at former gaging-station site

at Issaquah.

East line of sec. 28, T. 24 N.,

R. 6 E., at county road crossing, 5 mile north of Issaquah.

Drainage 

area 

(sq mi)

3.89

4.79

5.93

.

19.8

.

.87

5.06

4.57

.39

1 23

1.23

.86

5.86

8.29

4.24

Measured 

previously 

(water 

years)

1945,1947

1945-46

1945-46

1945

1945

1945

1945

1945-46

1945

1945

1945

1945

1945

1945

1945

1945

Date

1955

June 27

July 1

Sept. 8

1955

Sept. 7

1955

July 5

July 18

Aug. 8

Sept. 7

1956

Sept. 5

1955

Aug. 16

Sept. 7

1955

July 18

Aug. 8

Sept. 6

1956

Sept. 5

1955

Aug. 16

Sept . 6

1955

Aug. 16

Sept. 6

1955

June 30

July 18

Aug. 8

Sept. 6

1956

July 31

1955

July 1 

July 18

Aug. 8

Sept . 7

1956

July 31

1955

Aug. 18

Sept. 7

1955

Aug. 18

Sept. 7

1955

Aug. 18

Sept. 7

1955

Aug. 18

Sept. 7

1955

July 5

July 18

Aug. 8

Sept. 7

1956

Sept. 5

1955

July 5

July 18

Aug. 8

Sept. 7

1956

Sept. 5

1955

Aug. 18

Sept. 8

Discharge 

(cfs)

*.72

*.38

*.26

*3.71

15.6

*7.87

*8.74

*3.18

*2.27

0

*1.07

*23.2

*23.0

*13.6

*10.3

0

0

0

0

*2.73

*.96

*.72

*.58

*.92

17.0 

*3.47

*4.21

*1.66

*2.03

*.13

*.07

*.21

0

*.19

*.10

*.32

*.14

5.46

*2.41

3.33

*1.42

*.63

8.00

*5.05

*5.25

*2.75

*1.71

*.98

*.68

* Base flow.

t Includes some discharge measurements made during water year 1955.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 335

Discharge measurements made at points other than gaging stations In the Pacific slope basins 

In Washington and Upper Columbia River basin during the water year 1956 Continued

Lake Washington basin, Wash. Continued t

Stream

Issaquah

Creek.

Laughing

Jacobs

Creek .

Unnamed

tributary .

Do .......

Do.......

Do .......

Bear Creek. . .

East Pork

Bear Creek.

Seldel Creek.

Bear Creek. . .

Daniels Creek

Unnamed

tributary .

Do .......

Mackey Creek.

Evans Creek. .

Do.......

Unnamed

tributary .

Tributary to

Lake SammamIsh.

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

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

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

do

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

Sammamlsh

River.

Bear Creek. . .

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

Sammamlsh

River.

Cottage Lake.

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

Cottage Lake

Creek.

Bear Creek. . .

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

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

Evans Creek. .

Location

Wj see. 21, T. 24 N., R. 6 E.,

at county road crossing,

2 miles north of lasaquah.

SWi sec. 16, T. 24 N., R. 6 E.,

at county road crossing, 2^

miles north of Issaquah.

HEtHEi sec. 6. T. 24 N., R. 6

E. (revised), at county road

crossing, 2 miles south of

Inglewood .

SEiNWfc sec. 32, T. 25 N., R. 6

E., at county road crossing,

it miles south of Inglewood.

NEtNWt sec. 32, T. 25 N., R. 6

E., at county road crossing,

1 mile south of Inglewood.

NWt sec. 29, T. 25 N., R. 6 E.,

at county road crossing, 0.3

mile north of Inglewood.

Ei sec. 8, T. 26 N., R. 6 E., at

State Highway 2C crossing,

6 miles northeast of Redmond.

KEt sec. 9, T. 26 N., R. 6 E.,

at highway crossing, 6i miles

northeast of Redmond.

SWt sec. 20, T. 26 N., R. 6 E.,

at county road crossing, 3j

miles northeast of Redmond.

NWjNWt sec. 29, T. 26 N., R. 6

E., at former gaglng-statlon

site near Redmond.

South line of sec. 1, T. 26 N.,

R. 5 E., at highway crossing,

6 miles north of Redmond.

NEj sec. 7, T. 26 N., R. 6 E.,

at highway crossing, Si miles

north of Redmond.

SE£ sec. 18, T. 26 N., R. 6 E.,

at county road crossing, 4£

miles north of Redmond.

NWt sec. 32, T. 26 N., R. 6 E.,

at county road crossing, 2£

miles northeast of Redmond.

NWt (revised) sec. 22, T. 25 N.,

R. 6 E., at highway crossing,

5 miles east of Redmond.

SEfcSWj (revised) sec. 16, T. 25

N., R. 6 E., at private road

crossing, 4 miles southeast of

Redmond .

NEiSWi sec. 16, T. 25 N., R. 6

E . , at highway crossing, 3£

miles east of Redmond.

Drainage 

area 

(sq ml)

54.1

5.00

2.06

.30

4.25

_

5.14

.

2.41

13.6

4.27

1.33

_

1.42

2.91

6.96

2.46

Measured 

previously 

(water 

years)

1945

1945,1947

1945

1945

.

1945

1945

1945

1945

1943,1945

1945-49

1945

1945-46

1945

1945

1945

1945-46

1945

Date

1955

July 6

July 18

Aug. 8

Sept. 8

1956

July 31

1955

Aug. 18

Sept. 8

1955

Aug. 18

Sept. 8

1955

Aug. 18

Sept. 8

1955

Aug. 18

Sept. 8

1955

Aug. 18

Sept. 8

1955

July 6

July 20

Aug. 10

Sept. 8

Oct. 11

1956

Sept. 4

1955

Aug. 17

1955

Aug. 17

Sept. 8

1956

Aug. 1

1955

July 6

July 20

Aug. 10

Oct. 11

1956

Sept. 4

1955

Aug. 17

Sept. 8

1955

July 20

Aug. 9

Sept. 8

1955

Aug. 17

Sept. 8

1955

Aug. 18

Sept. 8

1955

Aug. 18

Sept. 7

1955

July 6

July 19

Aug. 11

Sept. 7

1956

Aug. 1

1955

July 6

July 19

Aug. 11

Sept. 7

Discharge 

(cfs)

74.9

*54.3

*50.2

*35.1

*35.9

*.24

*.20

b.03

0

0

b.03

b.05

0

b.02

b.02

9.68

*6.57

*5.94

*6.04

14.1

*4.22

0

*.31

*.40

*.48

17.0

*9.85

*8.81

20.9

*4.06

*.10

b.02

*.28

*.28

.17

*.18

b.20

*.44

*.61

*.02

b.Ol

2.14

*1.07

*1.19

*1.05

*1.32

1.53

*.85

*.72

*.51

* Base flow.

t Includes some discharge measurements made during water year 1955.

b Estimated.
336 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements made at points other than gaging stations in the Pacific slope basins 

in Washington and Upper Columbia River basin during the water year 1956 Continued

Lake Washington basin, Wash. Continued t

Stream

Evans Creek . .

Bear Creek . . .

Do...... .

North Creek . .

Do.......

Swamp Creek . .

Scriber Lake

Creek.

Swamp Creek. .

Unnamed

tributary .

Lyon Creek. . .

McAleer Creek

Do .......

Thornton

Creek.

Tributary to

Bear Creek . . .

Sammamish

River .

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

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

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

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

Swamp Creek . .

Sammamish

River.

Lake Washington.

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

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

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

do

Location

SWiNWi sec. 17, T. 25 N., R. 6

E., at former gaging-station

site near Redmond.

North line of sec. 27, T. 27 N.,

R. 5 E., at county road crossing, 4 miles northeast of

Bothell .

(JEiSWi sec. 3, T. 26 N., R. 5 E.,

at former gaging-station site at

Woodinville.

SWi sec. 30, T. 28 N., R. 5 E.,

at county road crossing, 85

miles north of Bothell.

South line of sec. 6, T. 27 N.,

R. 5 E., at county road crossing, 65 miles north of Bothell.

SEi sec. 23, T. 27 N., R. 4 E.,

4j miles northwest of Bothell..

NW^NEi sec. 27, T. 27 N., R. 4

E., at county road crossing,

5 miles northwest of Bothell.

NEjSW-J- sec. I, T. 26 N., R. 4

E., at former gaging-station

site near Bothell.

NW£ sec. 11, T. 26 N., R. 4 E.,

at highway crossing, 3 miles

west of Bothell.

Wj (revised) sec. 10, T. 26 N.,

R. 4 E., at highway crossing,

3j- miles west of Bothell.

East line (revised) of sec. 5,

T. 26 N., R. 4 E., at highway 

crossing, 5^ miles west of

Bothell.

NEi sec. 9, T. 26 N., R. 4 E.,

at former gaging-station site

near Bothell.

South line of sec. 21, T. 26 N.,

R. 4 E., at State Highway 1-J

crossing, at Seattle.

Drainage 

area 

(sq mi)

10.9

8.30

13.9

2.64

6.88

10.9

4.43

21.1

1.67

3.58

6.17

6.88

5.74

Measured 

previously 

(water 

years)

1945

1945-46

1945

1945

1945-46

1945-46

1945

1945

1945

1945-46

1945-46

1945,

1947-49

1945

Date

1955

July 6

July 19

Aug. 11

Sept. 7

1956

Aug. 1

1955

June 29

July 21

Aug. 9

Aug. 19

Sept. 8

1956

Aug. 31

1955

June 29

July 21

Aug. 9

Sept. 8

1956

Aug. 31

1955

Aug. 15

1955

July 21

Aug. 9

Sept. 7

1955

Aug. 19

Sept. 7

1955

Aug. 19

Sept. 7

1955

June 28

July 21

Aug. 9

Sept. 7

1956

May 16

Aug. 31

1955

Aug. 15

Sept. 7

1955

June 28

July 21

Aug. 8

Aug. 26

Sept. 7

1956

May 16

Aug. 31

1955

June 28 

July 21

Aug. 8

Aug. 26

Sept. 7

1955

June 28

July 21

Aug. 8

Aug. 26

Sept. 7

1956

May 16

Aug. 31

1955

June 29

July 22

Aug. 8

Aug. 19

Aug. Z6

Sept. 7

Discharge 

(cfs)

8.41

*6.50

*5.88

*5.66

 5.90

15.9

*4.20

 4.37

*4.29

*3.71

*4.58

26.0

*7.59

*7.54

*6.56

*7.48

0

*1.61

*1.74

*1.32

*2.71

*2.Z3

*.19

*.55

14.7

*4.51

*4.51

*3.76

13.3

*4.69

*.09

*.ll

2.60

*1.26

*1.20

 1.05

*.82

 2.01

*1.33

1.94

*1.31

*1.55

*1.54

 1.30

5.49

*3.36

*4.14

*3.17

*3.58

6.45

*4.22

9.26

b.02

.03

2.64

4.20

2.44

* Base flow, 

t Includes sc me discharge measurements made during water year 1955.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 337

Discharge measurements made at points other than gaging stations In the Pacific slope basins 

In Washington and Upper Columbia River basin during the water year 1956 Continued

Lake Washington basin, Wash. Contlnuedt

Stream

Little Brook.

Thornton

Creek.

Maple Leaf

Creek.

Unnamed

tributary.

Maple Leaf

Creek.

Thornton

Creek .

Tributary to

Thornton

Creek.

Lake Washington.

Thornton

Creek.

Maple Leaf

Creek.

Thornton

Creek.

Lake Washington.

Location

SWi sec. 27, T. 26 N., R. 4 E.,

at mouth, at East 115th St .

crossing, at Seattle.

SW-J- sec. 27, T. 26 N., R. 4 E.,

at East 110th St. crossing,

at Seattle .

»i sec. 33, T. 26 N., R. 4 E.,

at Bo the 11 Way crossing, at

Seattle .

Nj sec. 33, T. 26 N., R. 4 E.,

at East 98th St. crossing, at

Seattle.

SE-J-SEj- (revised) sec. 28, T. 26

N., R. 4 E., at county road

crossing on east side of golf

course, at Seattle.

SE-J- sec. 34, T. 26 N., R. 4 E.,

at former gaging-statlon site,

at Seattle.

Drainage 

area 

(sq ml)

_

7.48

2.91

.18

3.70

12.1

Measured 

previously 

(water 

years)

1943,1945

1945

1945-46

1945

1945-46

1942-43

1945-46

Date

1955

Aug. 19

Sept. 7

1955

June 29

July 22

Aug. 8

Aug. 26

Sept. 7

1955

July 22

Aug. 8

Aug. 26

Sept. 7

1955

Aug. 19

Sept. 7

1955

July 22

Aug. 8

Aug. 26

Sept. 7

1955

June 29

July 22

Aug. 8

Aug. 26

Sept. 7

1956

July 31

Discharge 

(cfs)

b0.03

b.005

10.2

3.09

4.11

3.88

6.77

1.97

2.20

2.43

1.78

.06

b.25

2.78

2.73

2.46

2.33

16.7

7.90

9.63

6.19

12.6

5.17

Snohomish River basin, Wash.t

Raging River .

Cherry Creek.

Deer Creek. . .

Snoqualtnle

River .

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

North Pork

StlllaguamIsh River .

West line of sec. 27, T. 24 N.,

R. 7 E., at former gagingstatlon site near Fall City.

NW£ sec. 17, T. 26 N., R. 7 E.,

at former gaglng-statlon site

near Duvall .

SE£ sec. 5, T. 32 N., R. 7 E., at

former gaglng-statlon site at

OSO.

30.6

19.9

071

1945-50

1945-48

1917-30,

1950

1955

July 19

Aug. 11

Sept. 7

1955

July 20

Aug. 10

Sept. 8

1956

Sept. 4

Aug. 18

*31.7

*36.9

*14.9

*16.6

*15.0

*6.00

*1.97

*51.8

Skaglt River basin, Wash.

Sulattle

River .

Small Creek. .

Sulattle

River .

Miners Creek.

Grandy Creek.

Skaglt River.

Sulattle

River .

Skaglt River.

Sulattle

River .

Skaglt River.

Lat 48°09'45", long 121°00'20",

Just above Small Creek, 10j

miles southwest of Holden.

Lat 48°09'45", long 121°00'20",

at mouth, loi miles southwest

of Holden.

Lat 48°09'45", long 121°00'20",

Just below Small Creek, 10j

miles southwest of Holden.

Lat 48°11'10". long 121°01'40",

at mouth, ij miles west of

Holden .

SE-t sec. 10, T. 35 N., R. 7 E.,

at former gaglng-statlon site

near Concrete.

28.7

3.71

32.4

11.3

18.9 1943-44

Feb. 1

Mar. 29

Feb. 1

Mar. 11

Mar. 29

Aug. 23

Sept. 18

Mar. 11

Feb. 1

Mar. 11

Mar. 29

Aug. 23

Sept. 18

Aug . 10

Sept. 8

*48.2

*39.8

*3.46

*2.63

*2.00

12.4

7.70

*61.4

*10.9

*4.15

*7.83

58.3

23.1

*12.0

*7.87

Chuckanut Creek basin, Wash.

Chuckanut 

Creek.

Chuckanut 

Bay.

NEt sec. 13, T. 37 N., R. 2 E., 

at alternate U. S. Highway 99 

crossing, 2j miles southwest 

of Belllngham.

6.67 1948-49, 

1954-55

Aug. 9 bO. 26

* Base flow.

t Includes some discharge measurements made during water yearl9b5.

b Estimated.

a Approximately.
338 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements made at points other than gaging stations in the Pacific slope 

In Washington and Upper Columbia River basin during the water year 1956 Continue

Whatcom Creek basin, Wash.

Stream

Austin Creek.

Olsen Creek..

Tributary to

Lake Whatcom.

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

Location

SwiNWj sec. 8, T. 37 N., R. 4 

E., at former gaging-station 

site, near Bellingham.

E., at road crossing, at 

Sunnyside. 

SWJ sec. 30, T. 38 N., R. 4 E., 

at road crossing, ^ mile south 

of Woodlawn.

Drainage 

area 

(sq mi)

7.80

3.78

Measured 

previously 

(water 

years }

1948-49, 

1951,1955

1954-55

1948-49, 

1954-55

Date

Aug. 9 

Sept. 8

Sept. 9

Aug. 8 

Sept. 9

Discharge 

(cfs)

*0.76 

b.50

b.50

*.81 

b.50

Squalieum Creek basin, Wash.

Squalieum 

Creek.

Bellingham 

Bay.

NW&SWj sec. 16, T. 38 N., R. 3 

E., at former gaging-station 

site, at Bellingham.

10. 3 1948-50, 

1955

Aug. 9 

Sept. 9

bO.20 

b.15

Hooksack River basin, Wash.

Kendall Creek

Coal Creek . . .

Bells Creek . .

Porter Creek .

Canyon Creek .

Anderson

Creek.

Do...... .

Plshtrap

Creek.

Bertrarid

Creek .

Do ...... .

Wiser Creek . .

Tenmlle Creek

Do ...... .

Larrabee

Springs .

Deer Creek . . .

Nooksack

River .

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

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

Middle Pork

Hooksack

River .

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

Nooksack

River .

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

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

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

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

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

Barret t Lake .

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

Deer Creek . . .

Barret t Lake.

NE£ sec. 3, T. 39 N., R. 5 E.,

at former gaging-station site

at Kendall.

NWjNWj sec. 10, T. 39 N., R. 5

E., at former gaging-station

site near Kendall.

SE-E- sec. 21, T. 39 N., R. 5 E.,

at Mount Baker highway cross -

Ing, lj miles northwest of

Kulshan.

SEj sec. 11, T. 38 N., R. 5 E.,

at road crossing, 3 miles

southeast of Kulshan.

SE|SE£ sec. 27, T. 39 N., R. 5

E., at former gaging-station

site at Kulshan.

SE£ sec. 6, T. 38 N., R. 4E.,

at Mount Baker highway crossing, 3 miles south of Goshen.

NE£ sec. 19, T. 39 N., R. 4 E.,

at former gaging-station site

at Goshen .

NE£ sec. 25, T. 40 N., R. 2 E.,

at alternate U. S. Highway 99

crossing, 1 mile southwest of

Lynden .

SEj sec. 11, T. 40 N., R. 2 E.,

at Blaine-Sumas road crossing,

2j miles northwest of Lynden.

SE£ sec. 27, T. 40 N., R. 2 E.,

at former gaging-station site

near Lynden.

SW£ sec. 3, T. 39 N., R. 2 E.,

\ mile above mouth and 3 miles

northeast of Perndale.

NE£ sec. 18, T. 39 N., R. 3 E.,

at road crossing, 1 mile

northeast of Laurel.

NE£SW£ sec. 22, T. 39 N., R. 2

E., at former gaging station

site near Perndale.

NW£NW£ sec. 36, T. 39 N., R. 2

E., 100 ft below source and

2 miles southwest of Laurel.

NE£ sec. 27, T. 39 N., R. 2 E.,

at road crossing, 2 miles east

of Ferndale.

d29.2

4.57

4.15

4.23

8.70

7.16

12.9

e29.1

f28.4

g40.3

6.23

10.5

22.7

-

7.06

1948-50,

1955

1948-49,

1955

1948-49,

1954-55

1954-55

1948-55

1948-49,

1954-55

1948-49,

1955

1942-43,

1948-49,

1954-55

1948-49,

1954-55

1948-49,

1951,1955

1942-43,

1949,

1954-55

1942-43,

1948-49,

1954-55

1948-49,

1951,1955

1948,1950,

1954-55

1943,

1948-49,

1954-55

Aug. 10

Sept. 7

Aug. 10

Sept. 8

Aug. 10

Sept. 8

Sept. 9

Sept. 8

Aug. 8

Aug. 8

Sept. 7

Aug. 8

Sept. 6

Aug. 8

Sept. 6

Aug. 8

Sept. 6

Aug. 8

Sept. 6

Aug. 8

Aug. 8

Sept. 6

Aug. 8

Sept. 7

Aug. 8

Sept. 7

*15.1

*8.82

*.43

b.20

*.60

b.20

b.10

*4.82

b.10

*.32

*.19

*10.9

*8.38

*2,65

*2.83

*8.67

*6.79

*1.48

*1.12

*1.07

*2.39

*3.90

*.43

*.31

*1.21

*.88

Terrell Creek basin, Wash.

Terrell Creek Birch Bay East line of sec. 6, T. 39 N., 

R. 1 E.j at road crossing, 

6 miles south of Blaine.

8.56 1954-55 Aug. 7 

Sept. 6

0 

0

California Creek basin, Wash .

California 

Creek .

Dray ton 

Harbor.

SE£ sec. 27, T. 40 N., R. 1 E., 

at former gaging-station site 

near Custer.

6.85 1942-43, 

1955

Aug. 7 

Sept. 6

*0.84 

*.69

Dakota Creek basin, Wash

North Pork

Dakota

Creek.

Dakota Creek.

Dakota Creek.

Drayton

Harbor .

SE^-SEi sec. 14, T. 40 N., R. 1

E., at road crossing, 5 miles

southeast of Blaine.

NWjSWj sec. 14, T. 40 N., R. 1

E . , at former gaging-station

site near Blaine .

6.65

15.2

1948-49,

1954-55

1948-55

Aug. 7

Sept. 6

Aug. 7

Sept . 6

*0.56

*.70

*1.90

*1.28

b Estimated.

d Of which 5.6 sq mi Is in Canada, 

e Of which 19.4 sq ml is in Canada, 

f Of which 22.6 sq ml is In Canada, 

g Of which 23.1 sq ml Is in Canada.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 339

Discharge measurements made at points other than gaging stations In the Pacific slope basins 

In Washington and Upper Columbia River basin during the water year 1956--Contlnued

Fraser River basin. Wash.

Stream

Dale Creek. . .

Ooodwln

ditch.

Unnamed

tributary .

Sumas River . .

Breckenrldge

Creek.

Sumas River . .

Pangborn Lake

Creek.

Johnson Creek

Saar Creek

Tributary to

Sumas River . .

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

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

Vedder River.

Sumas River . .

Vedder River .

Johnson Creek

Sumas River . .

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

Location

North line of sec. 9, T. 39 N.,

R. 4 E., at road crossing, 2^

miles southeast of Nooksack.

SWi sec. 33, T. 40 N., R. 4 E.,

at road crossing, 1 mile southeast of Nooksack.

NW£ sec. 33, T. 40 N., R. 4 E.,

at road crossing, J mile east

of Nooksack.

South line of sec. 29, T. 40 N.,

R. 4 E., at road crossing at

at Nooksack.

East line of sec. 28, T. 40 N.,

R. 4 E., at crossing of

Goodwln Road, 1^ miles east

of Nooksack.

HE£ sec. 11, T. 40 N., R. 4 E.,

at former gaging-station site

near Sumas .

SWi s c. 5, T. 40 N., R. 4 E.,

at oad crossing at Clearbro k.

SWi s c. 35, T. 41 N., R. 4 E.,

at 'ormer gaging-station site

at Sumas .

North line of sec. 6, T. 40 N.,

R. 5 E., at former gagingstation site near Sumas .

Drainage 

area 

(sq ml)

2.57

-

4.45

16.9

5.37

32.1

2.74

h23.0

9.76

Measured 

previously 

(water 

years )

194,7-48,

1954-55

1947-49,

1954-55

1947-48,

1954-55

1948-49,

1954-55

1947-49,

1954-55

1948-50,

1951,1955

1947-48,

1954-55

1947-49,

1955

1948,1955

Date

Aug. 9

Aug. 9

Sept. 7

Aug. 9

Sept. 7

Aug. 9

Sept. 7

Aug. 9

Sept. 7

Aug. 9

Sept. 7

Aug. 9

Sept. 7

Aug. 9

Sept. 7

Discharge 

(cfs)

bO.30

3.86

3.79

b.10

*8.46

*.95

*.42

*17.2

*12.9

*3.03

*2.43

*10.4

*11.1

*.59

*.08

Kootenai River basin

Yaak River . . .

Do...... .

Kootenay

River.

Kootenai

River .

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

Columbia

River.

NWiNEi sec. 2, T. 35 N., R. 32

W., at bridge at Yaak, Monb.,

about 3 miles above Pete Creek.

SE£ sec. 4, T. 35 N., R. 32 W.,

about 1 mile above Pete Creek

and 2 miles west of Yaak,

Mont.

Lat 49°29'40", long 117°20'04",

at Qrohman Narrows, 2 miles

below Nelson, British Columbia;

measurements referred to gage

No. 10 at Nelson (station 8 N.,

J. 9 of Water Resources Division, Department of Northern

Affairs and National Resources,

Canada) .

437

446

17,700 1932-55

May 23

May 24

May 26

June 1

June 14

July 16

Jan. 26

May 2

June 8

Aug. 2

5,040

4,620

4,210

2,730

954

307

13,590

54,080

162,700

48,680

Pend Oreille River basin, Wash.

Sweet Creek. .

Slate Creek..

Pend Oreille.

River .

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

SWiNEj- sec. 5, T. 38 N., R. 43

E., at concrete culvert on

State Highway 6, 2 miles southwesb of Metaline.

NW£ sec. 36, T. 40 N., R. 43 E.,

at crossing of State Highway 6,

5^ miles northeast of Metaline

Palls .

10.7

c29

1954

1952,1954

June 12

July 26

Sept. 3

May 29

June 12

June 25

July 28

Sept. 4

29.1

5.38

3.89

155

60.2

48.3

15.5

10.6

Spokane River basin

Coeur d'Alene

River .

Hayden Creek .

Little

Spokane

River.

Deer Creek . . .

Dragoon

Creek.

Little

Spokane

River.

Coeur d'Alene

Lake.

Hayden Lake . .

Spokane

River .

Little

Spokane

River .

... .do...

Spokane

River.

In lot 7, sec. 32, T. 50 N., R. 4

E., at site of former gaging

stabion, 0.2 mile below Beaver

Creek and ij miles southwest of

Prichard, Idaho.

In NW£SW£ sec. 25, T. 52 N., R. 3

W., at site of former gaging

station, 0.35 mile below North

Pork and 7 miles northeast of

Hayden Lake Post Office, Idaho.

NEfc sec. 34, T. 28 N., R. 43 E.,

at former gaging-station site at

Chattaroy, Wash.

On line between SW-J and SEi sec .

26, T. 28 N., R. 43 E., 1 mile

upstream from mouth of Ghattarcy,

Wash.

NE-J- sec. 4, T. 27 N., R. 43 E.,

at mouth, ij- miles southwest of

Chattaroy, Wash.

On line between sees . 3 and 4,

T. 27 N., R. 43 E., 500 ft

below Dragoon Creek and 1 mile

south of Chattaroy, Wash.

583

22.0

300

31.9

177

512

1944-53

1948-54

1948,1952,

1955

1948,1952,

1955

1948,1952,

1955

1952,1955

Jan. 14

Jan. 18

Sept. 25

Sept. 25

Sept. 25

Sept. 25

1,140

49.8

*100

*.58

*3.01

*99.1

* Base flow.

b Estimated.

c Approximate.

h Of which 6.6 sq ml Is in Canada.
340 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements 

In Washington and

made at points other than gaging stations In the Pacific slope basins 

Upper Columbia River basin during the water year 1956 Continued

Spokane River basin Continued

Stream

Little

Spokane

River.

Do.......

Do...... .

Deep Creek . . .

Deadman

Creek.

Do.. .. . . .

Unnamed

tributary .

Little

Spokane

River.

Wandermere

Lake Creek.

Little

Spokane

River .

Do .......

Do .......

Tributary to

Spokane

River.

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

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

Deadman

Creek.

Little

Spokane

River .

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

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

Spokane

River .

Little

Spokane

River .

Spokane

River .

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

....do...

Location

NEi see. 16, T. 27 N., R. 43

E., 50 ft above county bridge

at Buckeye, Wash.

SE£ sec. 21, T. 27 N., R. 43

E., 50 ft below county bridge

and lj miles south of Buckeye,

Wash.

Si sec. 28, T. 27 N.. R. 43 E.,

at county bridge, J- mile above

Deadman Creek and 2-j- miles

northeast of Dartford, Wash.

SEi sec. 22, T. 27 N., R. 43 E.,

at former gaging-station site

at Colbert, Wash.

Ei sec. 3, T. 26 N., R. 43 E.,

300 ft below highway bridge

and 1 mile north of Mead,

Wash.

SE£NW£ sec. 3, T. 26 N., R. 43

E., 1,000 ft below U. S. Highway 195 and 1 mile northeast

of Mead, Wash.

NWiSWi sec. 33, T. 27 N., R. 43

E., 820 ft below Deadman Creek

and 2 miles northwest of Mead,

Wash.

NWj sec. 5, T. 26 N., R. 43 E.,

400 ft above Wandermere Lake

Creek and f mile east of Dartford. Wash.

SEiNWj sec. 5, T. 26 N., R. 43

E., 100 ft above mouth and

 J mile east of Dartford, Wash.

NWj-NW-J- sec. 12, T. 26 N., R. 42

E . , 10 ft above bridge and

2 miles southwest of Dartford,

Wash.

SW^NWj- sec. 3, T. 26 N., R. 42

E., at site of former gaging

station, 4 miles west of

Dartford, Wash.

SE^NWt sec. 5, T. 26 N., R. 42

E., 50 ft below bridge, J mile

above mouth, and 5^- miles west

of Dartford, Wash.

Drainage 

area 

(sq mi)

518

523

524

32.8

80.3

94.7

.09

660

4.65

688

698

700

Measured 

previously 

(water 

years )

1952,1955

1952,1955

1952,1955

1948,

1952-53,

1955

1948,1952,

1955

1953,1955

1955

1953,1955

1953,1955

1953,1955

1953

1947-48,

1953,1955

Date

Sept. 26

Sept. 26

Sept. 26

Sept. 25

Sept. 26

Sept. 26

Sept. 26

Sept. 27

Sept. 27

Sept. 27

Sept. 2 8

Sept. 28

Discharge 

(cfs)

*138

*136

*135

0

*1.63

*5.64

0

*143

*9.54

*398

*415

*425

Okanogan River basin, Wash.

Okanogan

River.

Columbia

River .

NEj sec. 16, T. 30 N., R. 25 E.,

at bridge on State Highway 10,

3 miles east of Brewster.

c8,400 1955 Nov. 4

Mar. 16

Apr. 25

May 23

July 24

Aug. 6

Sept. 13

2,290

1,800

9,300

27,400

4,010

*2,330

*1,140

Methow River basin, Wash.

South Pork

Beaver

Creek.

Methow River .

Do .......

Beaver Creek .

Columbia

River .

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

NE£NE£ sec. 24, T. 34 N., R. 22

E., 1,000 ft above mouth and

7 miles northeast of Twisp .

NW|NE£ sec. 28, T. 30 N., R. 23

E., at bridge on State Highway 16, 3 miles northeast of

Pateros .

SW£ sec. 36, T. 30 N., R. 23 E.,

500 ft below bridge on U. S.

Highway 97 at Pateros.

26.8

cl,790

cl,810

May 19

Aug. 4

Sept. 12

Mar. 16

Apr. 26

May 23

July 24

Aug. 5

Sept. 13

Feb. 14

109

*8.73

*5.56

400

7,090

15,700

2,220

1,100

634

370

* Base flow. 

c Approximate.
INDEX

Page

Aberdeen, Wash., Wynoochee River near. 28 

Accuracy of field data and computed

results......................... 7-8

Acre-foot, definition of.............. 2

Agencies other than Geological Survey,

records collected by............ 11

Ahtanum Creek, North Fork, near

Tamplco, Wash................... 322

South Fork, at Conrad Ranch, near

Tamplco, Wash................... 323

Alder Creek near Hamilton, Wash....... 154

Alder Reservoir at Alder, Wash........ 66

Alderton, Wash., Puyallup River at.... 78

Alta Lake near Pateros, Wash.......... 283

American River near Nile, Wash........ 318

Arlington, Wash., Armstrong Creek near 139 

Jim Creek near...................... 135

North Fork Stillaguamish River near. 138

South Fork Stillaguamish River near. 134

Armstrong Creek near Arlington, Wash.. 139

Auburn, Wash., Big Soos Creek near.... 95

Green River near.................... 96

Baker River, at Concrete, Wash........ 152

below Anderson Creek, near Concrete,

Wash. ........................... 151

Bear Creek (tributary to Green River)

near Eagle Gorge , Wash.......... 90

Bear Creek (tributary to Sammamish

River) at Redmond, Wash......... 112

Belfair, Wash., Tahuya River near..... 55

Union River near.................... 52

Bellevue, Wash., Mercer Creek near.... 107

Bellingham, Wash., Whatcom Creek near. 159 

Bigfork, Mont., Swan River near....... 221

Big Soos Creek near Auburn, Wash...... 95

Birchbank, British Columbia, Columbia

River at........................ 189

Bitterroot River, East Fork, at

Conner, Mont.................... 201

East Pork, near Conner, Mont........ 200

near Darby, Mont.................... 202

West Fork, near Conner, Mont........ 199

Bitterroot River (West Fork) Reservoir, Mont., contents of........ 238

Black Diamond, Wash., Covington Creek

near............................ 94

Lake Sawyer near.................... 93

Newaukum Creek near................. 92

Blackfoot River, near Bonner, Mont.... 197

near Ovando, Mont................... 196

Blodgett Creek near Corvallis, Mont... 203 

Blue Lake near Coulee City, Wash...... 305

Bonner, Mont., Blackfoot River near... 197 

Bonners Perry, Idaho, Kootenai River

at. ............................176-177

Kootenai River near............175,178,180

Bothell, Wash., North Creek near...... 114

Sammamish River at.................. 115

Boulder Creek (Kootenai River basin)

near Leonia, Idaho .............. 172

Boulder Creek (Pend Oreille River

basin) at Maxville, Mont........ 193

Boundary Creek near Porthill, Idaho... 185

Bremerton, Wash., Gold Creek near...,. 53

Tahuya River near................... 54

Union River near.................... 51

Bridgeport, Wash., Columbia River at.. 275 

Rufus Woods Lake at................. 274

Brinnon, Wash., Duckabush River near.. 40 

Brooklyn, Wash., North River near..... 18

Bryant, Wash., Pilchuck Creek near.... 140

Buckley, Wash., Mud Mountain Reservoir near....................... 81

White River near.................... 82

Bumping Lake, Wash., contents of.... .327-328

Bumping River near Nile, Wash......... 317

Burlington, Wash., Samish River near.. 158 

Burnt Fork Creek near Stevensville,

Mont............................ 204

Cabinet, Idaho, Clark Pork near. 228

Calder, Idaho, St. Joe River at.......

Calispell Creek near Dalkena, Wash....

Camas Reservoirs, Mont., contents of.. 

Carbon River near Fairfax, Wash.......

Carnation, Wash., Griffin Creek near..

North Fork Tolt River near..........

Snoqualmie River near..............

South Fork Tolt River near..........

Tolt River near.....................

Cascade River at Marblemount, Wash.....

Cashmere, Wash., Mission Creek near...

Sand Creek near.....................

Cataldo, Idaho, Coeur d'Alene River

near............................

Cedar Falls, Wash., Cedar River at....

252

234

838

76

122

123

126

124

125

148

297

296

251

102

Cedar River near.....................99,100

Rex River near....................... 101

Cedar River, at Cedar Falls, Wash...... 102

at Renton, Wash...................... 105

below Bear Creek, near Cedar Falls,

Wash............................. 99

near Cedar Falls, Wash............... 100

near Landsburg, Wash................. 103

North Fork, near Lester, Wash........ 97

South Fork, near Lester, Wash........ 98

Cedarville, Wash., Rock Creek at....... 24

Centralia, Wash., Skookumchuck River

near............................. 22

Cfs-day, definition of................. 2

Chambers Creek below Leach Creek, near

Steilacoom, Wash................. 73

Chehalis, Wash., Newaukum River near... 21 

Chehalis River, at Porter, Wash........ 25

near Doty, Wash...................... £0

near Grand Mound, Wash............... 23

Chehalis River basin, Wash., gagingstation records in............... 20-28

Chelan, Wash., Chelan River at......... 287

Lake Chelan at....................... 286

Chelan River at Chelan, Wash........... 287

Chelan River basin, Wash., gagingstation records in.............. 284-287

Chimacum Creek near Chimacum, Wash.....

Chiwawa River near Plain, Wash.........

Clark Fork, above Missoula, Mont......

at St. Regis, Mont..................

at Thompson Falls, Mont.............

at Whitehorse Rapids, near Cabinet, 

Idaho...........................

below Missoula, Mont.................

near Plains, Mont....................

Cle Elum, Wash., Yakima River at.

38

292

198

207

227

228 

206 

224 

315 

Cle Elum Lake, Wash., contents of.....327,328

Cle Elum River near Roslyn, Wash. ...... 314

Cloquallum River at Elma, Wash......... 26

Coeur d'Alene Lake at Coeur d'Alene,

Idaho............................ 254

Coeur d'Alene River, above Shoshone

Creek, near Prichard, Idaho...... 249

at Enaville , Idaho ................... 250

near Cataldo, Idaho .................. 251

Columbia Falls, Mont., Flathead River

at. .............................. 220

Flathead River near.................. 209

South Fork Flathead River near....... 219

Columbia River, at Birchbank, British

Columbia......................... 189

at Bridgeport, Wash.................. 275

at Grand Coulee Dam, Wash............ 273

at international boundary............ 239

at Trinidad, Wash................... .4, 298

Colville, Wash., Mill Creek near....... 247

Colville River at Kettle Falls, Wash... 248 

Colville River basin, Wash., gagingstation records in..............243-248

Como Lake, Mont., contents of.......... 238

Computations, accuracy of results of... 7-8 

Concrete, Wash., Baker River at........ 152

Baker River near ..................... 151

Skagit River near.................... 153

Cornell, Wash., Esquatzel Coulee

at............................... 330

341
342 INDEX

Conner, Mont., East Fork Bitterroot

River at........................ 201

East Fork Bitterroot River near..... 200

West Fork Bitterroot River near..... 199

Contents, definition of............... 2

Control, definition of................ 2

Coolin, Idaho, Priest Lake near....... 230

Priest River near................... 231

Cooperation, record of................ 1-2

Copeland, Idaho, Kootenai River

near...........................181-182

Corvallis, Mont., Blodgett Creek near, 203 

Cottage Lake Creek near Redmond,

Wash............................ 110

Coulee City, Wash., Blue Lake near.... 305

Park Creek near..................... 304

Park Lake near...................... 303

Covington Creek near Black Diamond,

Wash............................ 94

Crab Creek, at Irby, Wash............299-300

near Moses Lake, Wash............... 302

near Smyrna, Wash................... 311

near Warden, Wash................... 310

Crab Creek basin, Wash., gagingstation records in.............299-311

Cubic feet per second per square mile,

definition of................... 2

Cubic foot per second, definition of., 2 

Cunningham, Wash., Providence Coulee

at....... ....................... 329

Curlew Lake near Malo, Wash........... 241

Dalkena, Wash., Calispell Creek near.. 234 

Darby, Mont., Bitterroot River near... 202 

Darrington, Wash., North Fork Stillaguamish River near.............. 137

Sauk River near..................... 149

Squire Creek near................... 136

Dartford, Wash., Little Spokane River

at.............................. 268

Data, accuracy of..................... 7-8

explanation of...................... 3-7

Day Creek near Lyman, Wash. ........... 155

Deep Creek at Moravia, Idaho.......... 179

Deer Lake near Loon Lake, Wash........ 243

Deer Meadow Creek near Hoodsport,

Wash............................. 44

Deming, Wash., Nooksack River at...... 163

Deschutes River near Rainier, Wash.... 61

Diablo Reservoir, Wash., contents of.. 157 

Diamond Lake near Newport, Wash....... 265

Discharge measurements:

California Creek basin.............. 338

Chambers Creek basin................ 33:

Chehalis River basin................ 332

Chuckanut Creek basin............... 337

Dakota Creek basin.................. 338

Duwamish River basin................ 332

Fraser River basin.................. 339

Kootenai River basin................ 339

Lake Washington basin..............332-337

Methow River basin.................. 340

Nooksack River basin................ 338

Okanogan River basin................ 340

Pend Oreille River basin............ 339

Skagit River basin.................. 337

Snohomish River basin............... 337

Spokane River basin................339-340

Squalicum Creek basin............... 338

Terrell Creek basin................. 338

Whatcom Creek basin................. 338

Note.--Streams for which only discharge measurements are available 

are not entered by name in this 

index. 

Dogfish Creek near Poulsbo, Wash...... 56

Doty, Wash., Chehalis River near...... 20

Drainage area, definition of.......... 3

Duckabush River near Brinnon, Wash.... 40

Dungeness River near Sequim, Wash..... 36

Duwamish River basin, Wash., gagingstation records in.............. 86-96

Eagle Gorge, Wash., Bear Creek near... 

Easton, Wash., Kachess River near.....

90

313

Eastport, Idaho, Moyie River at ....... 173

Eatonville, Wash., Ohop Creek near.... 70

Eileen, Idaho, Moyie River at......... 174

Eldon, Wash., Hamma Hamma River near.. 41

Elk, Wash., Eloika Lake near .......... 267

Elk, Wash., Little Spokane River at.... 264

Elma, Wash., Cloquallum River at....... 26

Eloika Lake near Elk, Wash............. 267

Eltopia, Wash., Esquatzel Coulee at.... 331

Elwha River at McDonald Bridge, near

Port Angeles, Wash............... 34

Elwha River basin, Wash., gagingstation records in............... 33-34

Enaville, Idaho, Coeur d'Alene River

at. .............................. 250

Entiat River at Entiat, Wash........... 288

Ephrata, Wash., Rocky Ford Creek near.. 308 

Esquatzel Coulee, at Connell, Wash..... 330

at Eltopia, Wash..................... 331

Esquatzel Coulee basin, Wash., gagingstation records in..............329-331

Essex, Mont., Middle Fork Flathead

River at......................... 210

Evans Creek above mouth, near Redmond,

Wash............................. Ill

Fairfax, Wash., Carbon River near...... 76

Fairholm, Wash., Soleduck River near... 32

Fall City, Wash., Patterson Creek near. 121

Feeder canal at Grand Coulee, Wash..... 271

Ferry, Wash., Kettle River near........ 240

Finn, Mont., Nevada Creek near......... 195

Fisher River near Jennings, Mont....... 167

Fishtrap Creek at Lynden, Wash......... 165

Flathead Lake at Somers, Mont.......... 222

Flathead River, at Columbia Falls,

Mont............................. 220

at Flathead, British Columbia........ 208

Middle Fork, at Essex, Mont.......... 210

near West Glacier, Mont............ 211

near Columbia Falls, Mont............ 209

near Poison, Mont.................... 223

South Fork, at Spotted Bear ranger

station, near Hungry Horse, Mont. 212

near Columbia Falls, Mont.......... 219

Flint Creek, at Maxville, Mont......... 192

near Southern Cross , Mont............ 191

Floods, special reports on............. 11

Fork Creek near Lebam, Wash............ 16

Franklin D. Roosevelt Lake at Grand

Coulee Dam, Wash................. 272

Friday Creek near Lester, Wash......... 87

Georgetown Lake, Mont., contents of.... 238

German Gulch Creek near Ramsay, Mont... 190

Glacier, Wash., Nooksack River near.... 160

Gold Bar, Wash., Skykomish River near.. 117

Wallace River at...................... 118

Gold Creek near Bremerton, Wash........ 53

Goldsborough Creek near Shelton, Wash.. 59

Grand Coulee, Wash., Feeder canal at... 271 

Grand Coulee Dam, Wash., Columbia

River at. ........................ 273

Franklin D. Roosevelt Lake at........ 272

Grand Mound, Wash., Chehalis River near 23 

Granite Falls, Wash., Pilchuck River

near. ............................ 127

South Fork Stillaguamish River near.. 133

Graves Creek near Hungry Horse, Mont... 217

Green River, near Auburn, Wash......... 96

near Lester, Wash. ................... 88

near Palmer, Wash .................... 91

Greenwater, Wash., Greenwater River

at.. ............................. 80

White River at....................... 79

Greenwater River at Greenwater, Wash... 80

Griffin Creek near Carnation, Wash..... 122

Hamilton, Wash., Alder Creek near...... 154

Hamma Hamma River near Eldon, Wash..... 41

Hayden Lake at Hayden Lake, Idaho...... 255

Hoh River near Spruce, Wash............ 31

Hoodsport, Wash., Deer Meadow Creek

near............................. 44

North Fork Skokomish River near...... 42,43

Hope, British Columbia, Skagit River

near............................. 141

Hope, Idaho, Pend Oreille Lake at...... 229

Huetter, Idaho, Rathdrum Prairie Canal

at............................... 256

Huge Creek near Wauna, Wash............ 57

Humptulips River near Humptulips,

Wash............................. 29

Hungry Horse, Mont., Graves Creek near. 217 

Hungry Horse Reservoir near.......... 218
INDEX 343

Hungry Horse, Mont., Lower Twin Creek 

near............................

South Pork Flathead River near......

Spotted Bear River near.............

Sullivan Creek near.................

Twin Creek near.....................

Hungry Horse Reservoir near Hungry

Horse, Mont.....................

Hydrologic conditions.................

graph of............................

215

212

213

216

214

218

11

12

Icicle Creek above Snow Creek, near

Leavenworth,.Wash............... 294

Index, Wash., South Pork Skykomish

River near......................12,116

lone, Wash., Pend Oreille River near.. 235 

Irby, Wash. , Crab Creek at...........299-300

Issaquah Creek near Issaquah, Wash.... 108

Jennings, Mont., Fisher River near.... 167 

Jim Creek near Arlington, Wash........ 135

Kachess Lake, Wash., contents of.....327,328

Kachess River near Easton, Wash....... 313

Kamilche, Wash., Skookum Creek at..... 60

Kapowsin Creek near Kapowsin, Wash.... 74

Keechelus Lake, Wash., contents of...327-328 

Kettle Falls, Wash., Colville River

at.............................. 248

Kettle River, near Ferry, Wash........ 240

neap Laurier, Wash.................. 242

Kettle River basin, Wash., gagingstation records in.............240-242

Kiona, Wash., Yakima River at......... 326

Kootenai River, at Bonners Ferry,

Idaho..........................176-177

at Boom Camp, near Bonners Ferry,

Idaho........................... 175

at Klockmann Ranch, near Bonners

Ferry, Idaho.................... 180

at Leonia, Idaho .................... 171

at Libby, Mont...................... 168

at Newgate, British Columbia

(Kootenay River)................ 166

at Porthill, Idaho .................186-187

near Bonners Ferry, Idaho........... 178

near Copeland, Idaho ...............181-182

Kootenai River basin, British ColumbiaIdaho-Mont., gaging-station records in........................166

Kootenay Lake at Kuskonook, British

Columbia........................

Kootenay River at Newgate, British

Columbia (Kootenai River).......

Kuskonook, British Columbia, Kootenay 

Lake at.........................

 188 

188 

166 

188

La Grande, Wash., La Grande Reservoir 

at. .............................

Mashel River near ....................

Nisqually River at..................

La Grande Reservoir at La Grande,

Wash,...........................

Lake Chelan at Chelan, Wash...........

Lake Creek at Troy, Mont..............

Lake Cushman, Wash., change in contents in........................

Lake Goodwin near Silvana, Wash.......

Lake Mills at Glines Canyon, near Port 

Angeles, Wash...................

Lake Sawyer near Black Diamond, Wash.. 

Lake Shannon, Wash., contents of......

Lake Shoecraft near Tulalip, Wash.....

Lake Stevens, Wash., Little Pilchuck 

Creek near......................

Lake Tapps near Sumner, Wash..........

Lake Washington basin, Wash., gagingstation records in..............97-

Landsburg, Wash., Cedar River near....

Latah Creek at Spokane, Wash..........

Laurier, Wash., Kettle River near.....

Leavenworth, Wash., Icicle Creek near. 

Lebam, Wash., Fork Creek near.........

Willapa River at....................

Lenore Lake near Soap Lake, Wash......

Leonia, Idaho, Boulder Creek near.....

Kootenai River at...................

Lester, Wash., Friday Creek near......

Green River near....................

North Fork Cedar River near.........

67

286

169

43

131

33

93

157

132

128

84

 115 

103 

262 

242 

294 

16 

15 

306 

172 

171

87

88

97

Lester, Wash., Smay Creek near.........

Snow Creek near......................

South Fork Cedar River near..........

Libby, Mont., Kootenai River at........

Liberty Lake at Liberty Lake, Wash.....

Little Pilchuck Creek near Lake

Stevens, Wash....................

Little Quilcene River near Quilcene,

Wash.............................

Little Spokane River, at Dartford,

Wash.............................

at Elk, Wash.........................

Lolo Creek above Sleeman Creek, near 

Lolo, Mont.......................

Long Canyon Creek near Porthill, Idaho. 

Long Lake, Wash., Long Lake at.........

Spokane River at.....................

Long Lake at Long Lake, Wash...........

Loon Lake, Wash., Deer Lake near.......

Loon Lake near.......................

Sheep Creek at.......................

Loon Lake near Loon Lake, Wash.........

Lotus, Idaho, St. Maries River at......

Lower Jocko Lake, Mont., contents of 

Lower Twin Creek near Hungry Horse,

Mont.............................

Lucerne, Wash., Railroad Creek at......

Lyman, Wash., Day Creek near...........

Lynden, Wash., Fishtrap Creek at.......

Nooksack River near..................

McAlllster Springs near Olympia, Wash..

McKenna, Wash., Nisqually River at.....

Nisqually River near.................

Map of the United States...............

Maple Valley, Wash., Rock Creek near.. 

Marblemount, Wash., Cascade River at..

Skagit River near...................

Martin, Wash., Yakima River near......

Marysville, Wash., Quilceda Creek

near............................

Mashel River near La Grande, Wash......

Mason Lake near Union, Wash...........

Maxville, Mont., Boulder Creek at.....

Flint Creek at.

130 

69 

58 

193 

192 

May Creek near Renton, Wash. ........... 106

Maynard, Wash., Snow Creek near........ 37

Medical Lake at Medical Lake, Wash..... 263

Mercer Creek near Bellevue, Wash....... 107

Metaline Falls, Wash., Pend Oreille

River near....................... 237

Sullivan Creek at.................... 236

Methow River at Twisp, Wash............ 282

Methow River basin, gaging-station

records in......................282-283

Mill Creek near Colville, Wash......... 247

Mineral Creek near Mineral, Wash....... 65

Mission Creek near Cashmere, Wash...... 297

Mission Valley Reservoirs, Mont., contents of......................... 238

Missoula, Mont., Clark Fork above...... 198

Clark Fork below..................... 206

Monroe, Wash., Woods Creek near........ 120

Moravia, Idaho, Deep Creek at.......... 179

Moses Lake, Wash., Crab Creek near. 

Moses Lake at...................

Moses Lake at Moses Lake, Wash....

Mount Vernon, Wash., Skagit River 

near.

302

309

309

156 

Moyie River, at Eastport, Idaho........ 173

at Eileen, Idaho..................... 174

Mud Mountain Reservoir near Buckley,

Wash............................. 81

Naches, Wash., Naches River near....... 321

Tieton River near.................... 319

Naches River below Tieton River, near

Naches, Wash..................... 321

Naselle, Wash., Naselle River near..... 13 

Salmon Creek near.................... 14

Naselle River near Naselle,

Wash,............................ 13

Naselle River basin, Wash., gagingstation records in............... 13-14

National, Wash., Nisqually River near.. 64

Nevada Creek above reservoir, near

Finn, Mont....................... 195

Nevada Creek Reservoir, Mont., contents

of............................... 238
344 INDEX

New Reservation Canal, Wash., monthly

discharge....................... 325

Newaukum Creek near Black Diamond,

Wash. ........................... 92

Newaukum River near Chehalis, Wash.... 21

Newgate, British Columbia, Kootenay

River at........................ 166

Newhalem, Wash., Ross Reservoir near.. 143 

Ruby Creek near..................... 142

Skagit River at..................... 146

Stetattle Creek near................ 145

Thunder Creek near.................. 144

Newport, Wash., Diamond Lake near..... 265

Pend Oreille River at............... 233

Sacheen Lake near................... 266

Nighthawk, Wash., Palmer Lake near.... 279 

Similkameen River near.............. 280

Nile, Wash., American River near...... 318

Bumping River near.................. 317

Nisqually River, at La Grande, Wash... 68 

at McKenna, Wash.................... 72

near McKenna, Wash.................. 71

near National, Wash................. 64

Nisqually River basin, Wash., gagingstation records in.............. 64-72

Nooksack River, above Cascade Creek,

near Glacier, Wash.............. 160

at Deming, Wash..................... 163

near Lynden, Wash................... 164

South Pork, near Wickersham, Wash... 161

Nooksack River basin, Wash., gagingstation records in.............160-165

North Creek near Bothell, Wash........ 114

North River, near Brooklyn, Wash...... 18

near Raymond, Wash.................. 19

North River basin, Wash., gagingstation records in.............. 18-19

Ohop Creek near Eatonville, Wash...... 70

Okanagan River, at Okanagan Falls,

British Columbia................ 276

at Oroville, Wash................... 278

near Tonasket, Wash................. 281

Okanogan River basin, Wash., gagingstation records in.............276-281

Old Reservation Canal, Wash., monthly

discharge of.................... 325

Olympia, Wash., McAllister Springs

near. ........................... 63

Woodland Creek near.................

Order, downstream, of listing gaging

stations........................ 3

Oroville, Wash., Okanogan River at.... 278

Osoyoos Lake near................... 277

Orting, Wash., Puyallup River near.... 75

Osoyoos Lake near Oroville, Wash...... 277

Otis Orchards, Wash., Spokane River

near............................ 259

Ovando, Mont., Blackfoot River near... 196

Palmer, Wash., Green River near....... 91

Palmer Lake near Nighthawk, Wash...... 279

Park Creek below Park Lake, near

Coulee City, Wash............... 304

Park Lake near Coulee City, Wash...... 303

Parker, Wash., Yakima River near.....324-325

Pateros, Wash., Alta Lake near........ 283

Patterson Creek near Fall City,

Wash..... ....................... 121

Pend Oreille Lake at Hope, Idaho...... 229

Pend Oreille River, at Newport, Wash.. 233 

below Box Canyon, near lone, Wash... 235 

below Z Canyon, near Metaline Falls

Wash............................ :

Pend Oreille River basin, Idaho-Mont.,

gaging-station records in......190-837

smaller reservoirs in. .............. 238

Peshastin, Wash., Wenatchee River

at.............................. i

Phillipsburg, Mont., Middle Fork Rock

Creek near...................... 194

Pilchuck Creek near Bryant, Wash...... 140

Pilchuck River near Granite Falls,

Wash. ........................... 127

Plain, Wash., Chiwawa River near...... 292

Wenatchee Lake near................. 290

Wenatchee River at.................. 293

White River near.................... 289

Plains, Mont., Clark Fork near........ 224

Poison, Mont., Flathead River near.... 22

Port Angeles, Wash., Elwha River near.. 34 

Lake Mills near...................... 33

Siebert Creek near................... 35

Porter, Wash., Chehalis River at....... 25

Porthill, Idaho, Boundary Creek near... 185 

Kootenai River at...................186-187

Long Canyon Creek near............... 183

Smith Creek near..................... 184

Post Falls, Idaho, Spokane River near.. 258 

Spokane Valley Farms Co.'s canal at.. 257

Potlatch, Wash., North Fork Skokomish

River near....................... 45

Skokomish River near................. 49

South Fork Skokomish River near...... 46

Vance Creek near..................... 48

Poulsbo, Wash., Dogfish Creek near..... 56

Prichard, Idaho, Coeur d'Alene River

near............................. 249

Priest Lake at outlet, near Coolin,

Idaho............................ 230

Priest River, near Coolin, Idaho........ 231

near Priest River, Idaho............. 232

Prospect Creek at Thompson Falls, Mont. 226

Providence Coulee at Cunningham,

Wash............................. 329

Publications on streamflow, by Geological Survey...................... 8-11

by State agencies .................... 10-11

Purdy Creek near Union, Wash........... 50

Puyallup River, at Alderton, Wash...... 78

at Puyallup, Wash.................... 85

near Orting, Wash.................... 75

Puyallup River basin, Wash., gagingstation records in............... 74-85

Quilceda Creek near Marysville, Wash... 

Quilcene, Wash., Little Quilcene River

near. ............................

Quinault River at Quinault Lake,

Wash.............................

Railroad Creek at Lucerne, Wash........

Rainier, Wash., Deschutes River near... 

Ramsay, Mont., German Gulch Creek

near.............................

Rathdrum Prairie Canal at Huetter,

Idaho............................

Raymond, Wash., North River near.......

South Fork Willapa River near. .......

Redmond, Wash . , Bear Creek at..........

Cottage Lake Creek near..............

Evans Creek near.....................

Sammamish Lake near..................

Sammamish River near.................

Renton, Wash., Cedar River at..........

May C reek near.......................

Rex River near Cedar Falls, Wash.......

Rock Creek (tributary to Cedar River)

near Maple Valley, Wash..........

Rock Creek (tributary to Chehalis

River) at Cedarville, Wash.......

Rock Creek (tributary to Clark Fork),

Middle Fork, near Philipsburg,

Mont.............................

Rock Creek (East Fork) Reservoir,

Mont., contents of...............

Rocky Ford Creek near Ephrata, Wash,... 

Roslyn, Wash., Cle Elum River near.....

Ross Reservoir near Newhalem, Wash.....

Rosa Canal, Wash., monthly discharge

of...............................

Ruby Creek below Panther Creek, near

Newhalem, Wash...................

Rufus Woods Lake at Bridgeport, Wash... 

Runoff in inches, definition of........

Sacheen Lake near Newport, Wash........

St. Joe River at Calder, Idaho.........

St. Maries River at Lotus, Idaho.......

St. Regis, Mont., Clark Fork at........

Salmon Creek near Naselle, Wash........

Samish River near Burlington, Wash.....

Sammamish Lake near Redmond, Wash......

Sammamish River, at Bothell, Wash......

near Redmond, Wash...................

Sand Creek, near Cashmere, Wash........

Satsop River near Satsop, Wash.........

Sauk River, above Whitechuck River near 

Darrington, Wash.................

near Sauk, Wash......................

130

30

285

61

190

256

19

17

112

110

111

109

113

105

106

101

104

194

238

308

314

143

325

142

274

266

252

253

207

14

158

109

115

113

296

149

150
INDEX 345

Page

Sequim, Wash., Dungeness River near... 36 

Sheep Creek, at Loon Lake, Wash....... 245

at Springdale, Wash................. 246

Shelton, Wash., Goldsborough Creek

near............................ 59

Slebert Creek near Port Angeles,

Wash............................ 35

Silvana, Wash., Lake Goodwill near..... 131

Similakameen River near Nighthawk,

Wash............................ 280

Skagit River, above Alma Creek, near

Marblemount, Wash............... 147

at International boundary, near

Hope, British Columbia .......... 141

at Newhalem, Wash................... 146

near Concrete , Wash................. 153

near Mount Vernon, Wash. ............ 156

Skagit River basin, British ColumbiaWash., gaging-statlon records 

in. ............................141-156

reservoirs in....................... 157

Skokomish River, near Potlatch,

Wash............................ 49

North Fork, below Staircase Rapids,

near Hoodsport, Wash............ 42

near Hoodsport, Wash.............. 43

near Potlatch, Wash............... 45

South Fork, near Potlatch, Wash..... 46

near Union, Wash.................. 47

Skokomish River basin, Wash., gagingstation records in.............. 42-50

Skookum Creek (tributary to Nooksack

River) near Wickersham, Wash.... 162

Skookum Creek (tributary to Pacific

Ocean) at Kamilche, Wash........ 60

Skookumchuck River near Centralia,

Wash............................ 22

Skykomish River, near Gold Bar,

Wash. ........................... 117

South Fork, near Index, Wash....... .12,116

Smay Creek near Lester, Wash.......... 89

Smith Creek near Porthill, Idaho...... 184

Smyrna, Wash., Crab Creek near........ 311

Snohomish River at Snohomish, Wash.... 129

Snohomish River basin, Wash., gagingstation records in.............116-130

Snoqualmie River, near Carnation,

Wash............................ 126

Snow Creek (Duwamish River basin) near

Lester, Wash.................... 86

Snow Creek (Snow Creek basin) near

Maynard.Wash................... 37

Soap Lake, Wash., Lenore Lake near.... 306

Soap Lake near...................... 307

Soap Lake near Soap Lake, Wash........ 307

Soleduck River near Fairholm, Wash.... 32

Somers, Mont., Flathead Lake at....... 222

South Prairie Creek at South Prairie,

Wash............................ 77

Southern Cross, Mont., Flint Creek

near............................ 191

Spokane, Wash., Latah Creek at........ 262

Spokane River at....................12,261

Spokane River, above Liberty Bridge,

near Otis Orchards, Wash........ 259

at Long Lake, Wash.................. 270

at Spokane, Wash. ...................12,261

near Post Falls, Idaho .............. 258

Spokane River basin, Idaho-Wash.,

gaging-station records in......249-270

Spokane Valley Farms Co.'s canal at

Post Falls, Idaho............... 257

Spotted Bear River near Hungry Horse,

Mont............................ 213

Springdale, Wash., Sheep Creek at..... 246

Spruce, Wash., Hoh River near......... 31

Squire Creek near Darrington, Wash.... 136

Stage-discharge relation, definition

of.............................. 2

Startup, Wash., Sultan River near..... 119

Stehekin River at Stehekin, Wash...... 284

Steilacoom, Wash., Chambers Creek

near............................ 73

Stetattle Creek near Newhalem,

Wash............................ 145

Stevensville , Mont., Burnt Fork Creek

near............................ 204

Stillaguamish River, North Fork, near

Arlington, Wash................. 138

North Fork, near Darrington, Wash... 137

Page 

Stillaguamish River, South Pork, above

Jim Creek, near Arlington, Wash.. 134 

South Fork, near Granite Palls,

Wash. ............................ 133

Stillaguamish River basin, Wash.,

gaging-station records in. ..... .133-140

Stuck River near Sumner, Wash. ......... 83

Sullivan Creek (tributary to Flathead

River, South Fork) near Hungry

Horse , Mont ......................

Sullivan Creek (tributary to Fend

Orellle River) at Metaline Palls,

Wash.. ...........................

Sultan River near Startup, Wash. .......

Sumner, Wash., Lake Tapps near. ........

Stuck River near .....................

Sunnyside Canal, Wash., monthly discharge of ........................

Swan River near Bigfork, Mont ..........

216

236

119

84

83

325

221

Tahuya River, near Self air, Wash........ 55

near Bremerton, Wash. ................ 54

Tahuya River basin, Wash., gagingstation records in ............... 53-55

Tampico, Wash., North Fork Ahtanum

Creek near ....................... 322

South Fork Ahtanum Creek near. ....... 323

Terms and abbreviations , definition

of ............................... 2-3

Thompson Falls , Mont . , Clark Pork

at. .............................. 227

Prospect Creek at .................... 226

Thompson River near .................. 225

Thompson Palls Reservoir, Mont., contents of ......................... 238

Thompson River near Thompson Falls,

Mont. ............................ 225

Thunder Creek near Newhalem, Wash. ..... 144

Tieton Reservoir, Wash., contents

of ............................. .327,328

Tieton River, at headworks of Tieton

Canal, near Naches, Wash. ........ 320

at Tieton Dam, near Naches, Wash..... 319

Tolt River, near Carnation, Wash....... 125

North Fork, near Carnation, Wash. .... 123

South Pork, near Carnation, Wash..... 124

Tonasket, Wash., Okanogan River near... 281 

Trinidad, Wash., Columbia River at..... 4, 298

Troy, Mont. , Lake Creek at ............. 169

Yaak River at ........................ 170

Tulalip, Wash., Lake Shoecraft near.... 132

Tulalip Creek basin, gaging-station

records in ..................... .131-132

Twin Creek near Hungry Horse, Mont..... 214

Twisp , Wash . , Methow River at .......... 282

Umtanum, Wash., Yakima River at........ 316

Union, Wash. , Mason Lake near. ......... 58

Purdy Creek near. .................... 50

South Pork Skokomish River near. ..... 47

Union Gap Canal, Wash., monthly discharge of ........................ 325

Union River, near Belfair, Wash........ 52

near Bremerton, Wash. ................ 51

Union River basin, Wash., gagingstation records in. .............. 51-52

Vance Creek near Potlatch, Wash. 48

WSP, definition of..................... 3

Wallace River at Gold Bar, Wash........ 118

Warden, Wash., Crab Creek near......... 310

Wauna, Wash. , Huge Creek near.......... 57

Wenatchee Lake, near Plain, Wash....... 290

Wenatchee River below................ 291

Wenatchee River, at Peshastin, Wash.... 295

 at Plain, Wash....................... 293

below Wenatchee Lake, Wash........... 291

Wenatchee River basin, Wash., gagingstation records in..............289-297

West Glacier, Mont., Middle Fork

Flathead River near.............. 211

Whatcom Creek below hatchery, near

Bellingham, Wash................. 159

White River (Puyallup River basin), at

Greenwater, Wash................. 79

near Buckley, Wash................... 82

White River (Wenatchee River basin)

near Plain, Wash................. 289

Wichersham, Wash., Skookum Creek near.. 162
346 INDEX

Page. 

Wickersham, Wash., South Fork Nooksack

River near...................... 161

Willapa River, at Lebam, Wash......... 15

South Pork, near Raymond, Wash...... 17

Willapa River basin, Wash., gaging- I 

station records in.............. 15-17

Wilson Creek at Wilson Creek,

Wash............................ 301

Woodland Creek near Olympia, Wash..... 62

Woods Creek near Monroe, Wash......... 120

Work, division of..................... 2

scope of............................ 1

Wynoochee River, above Save Creek, 

near Aberdeen, Wash..........

Page 

28

170 

315 

326 

316 

312 

near Parker, Wash...................324-325

Yakima River basin, Wash., gagingstation records in..............312-326

reservoirs in....................... 327-328

Yaak River near Troy, Mont.......

Yakima River, at Cle Elum, Wash.

at Kiona, Wash.................

at Umtanum, Wash...............

near Martin, Wash.

U. S. GOVERNMENT PRINTING OFFICE: 1958 O-467240