Lower Cottonwood18020102

Lower CalaverasMormon Slough18040004

Salton Sea18100200

Southern Mojave18100100

Mojave18090208

Tulare-Buena Vista Lakes18030012

Salinas18060005

Lost18010204

Lower Pit18020003

Upper Pit18020002

Trinity18010211

Imperial Reservoir15030104

Santa Ana18070203

Upper King18030010

Santa Clara18070102

San Diego18070304

Truckee16050102Upper Yuba

18020125

Smith18010101

Upper Amargosa18090202

Death Valley-Lower Amargosa

18090203

Lower Eel

18010105

Russian18010110

Honey-Eagle Lakes18080003

Crowley Lake18090102

Warner Lakes17120007

Antelope-Fremont Valleys18090206

Pajaro18060002

Havasu-Mohave Lakes

15030101

Smoke Creek Desert

16040203

Cuyama18060007

Ivanpah-Pahrump Valleys16060015

Owens Lake18090103

LowerKlamath

18010209

Panamint Valley18090204

Illinois17100311

Upper Tuolumne18040009

Mono Lake18090101

Estrella18060004

Upper Kern18030001

Upper Klamath18010206

Lower Sacramento18020109 East Walker

16050301Fish Lake-

Soda Spring Valleys16060010

Upper San Joaquin18040006

Goose Lake18020001

Massacre Lake

16040204

Coyote18050003

Scott18010208

West Walker16050302

Mad-Redwood18010102

Shasta18010207

Santa Ynez18060010

Upper Merced18040008

Eureka-Saline Valleys

18090201

Salmon18010210

Applegate17100309

Indian Wells-Searles Valleys18090205

Sacramento-Stone Corral18020104Upper Cache

18020116

Middle San Joaquin-Lower Chowchilla

18040001

Coyote-Cuddeback Lakes18090207

Central Coastal

18060006

McCloud18020004

Big-Navarro-Garcia

18010108

Upper Eel18010103

Middle Fork Feather18020123

Mill-Big Chico18020119

Upper Carson

16050201

Los Angeles18070105

San Jacinto18070202

North Fork

Feather18020121

Suprise Valley

18080001

Chetco17100312

Butte18010205

San Gabriel

18070106

South Fork Kern

18030002

Upper Stony

18020115

San Pablo Bay18050002

Upper Stanislaus18040010

Upper Kaweah18030007

Santa Maria18060008

Madeline Plains18080002

South Fork Trinity

18010212Mattole

18010107

San Joaquin Delta18040003

Lower Butte

18020105

North Fork American18020128

Lower Feather

18020106

Middle Fork Eel

18010104

Upper Cow-Battle

18020118

South Fork Eel

18010106

San Francisco Bay18050004

Santa Margarita18070302

Lake Tahoe

16050101

Upper Putah

18020117

Upper Mokelumne18040012

Sacramento-Lower Thomes

18020103

South Fork American18020129

Panoche-San Luis Reservoir18040014

Upper Tule18030006

Calleguas18070103

Carrizo Plain

18060003

Middle Kern-Upper Tehachapi-

Grapevine18030003

East Branch North Fork

Feather18020122

Carmel18060012

Upper Bear18020126

San Luis Rey-Escondido18070303

Suisun Bay18050001

Santa Monica Bay18070104

Upper Chowchilla-Upper Fresno

18040007

Aliso-San Onofre18070301

Upper Los Gatos-Avenal

18030011

Ventura18070101

Cottonwood Headwaters18020113

Cottonwood-Tijuana

18070305

Sacra-mento Head-waters

18020005

Gualala-Salmon

18010109

Upper Poso18030004

Upper Calaveras18040011

San Lorenzo-Soquel

18060001

Lower Colorado15030107

Lower American18020111

San Antonio18060009

Upper Butte

18020120

Tomales-Drake Bays18050005

Santa Barbara Coastal18060013

Mill18030008

Upper Deer-Upper White18030005

Bodega Bay18010111

Newport Bay18070204

Sacramento-Lower Cow-Lower Clear18020101

Alisal-Elkhorn Sloughs

18060011

San Francisco Coastal South

18050006

Seal Beach18070201

Santa BarbaraChannel Islands

18060014

San Pedro Channel Islands

18070107

Sacramento-Upper Clear18020112

Upper Elder-Upper Thomes

18020114

HoncutHdwtrs

18020124

Upper Cosumnes18040013

Lower Bear18020108 Upper Coon-

Upper Auburn18020127

Middle San Joaquin-Lower Merced-

Lower Stanislaus18040002

Lower Cosumnes-Lower Mokelumne

18040005

California Subbasins

NV

OR ID

Summer Lake17120005

Guano17120008

Umatilla17070103

Lower John Day17070204

Lost River18010204

Alvord Lake17120009

Silver17120004

Upper Malheur17050116

Sprague18010202

Walla Walla17070102

Umpqua17100303

Lower Deschutes17070306

Warner Lakes17120007

Upper John Day17070201

Mckenzie17090004

Lower Owyhee17050110

Williamson18010201 Jordan

17050108

Powder River17050203

Upper Deschutes17070301

Silvies17120002

Lower Crooked17070305

Upper Rogue17100307

South Umpqua17100302

Upper Willamette17090003

Coquille17100305

Illinois17100311 Middle Owyhee

17050107

Burnt River17050202

Middle Columbia-Hood17070105

Lake Abert17120006

North Umpqua17100301

North Fork John Day17070202

Clackamas17090011

Middle Columbia-Lake Wallula17070101

Willow17070104

Nehalem17100202

South Fork Crooked17070303

Upper Crooked17070304

Siuslaw17100206

Yamhill17090008

Applegate17100309

Willow17050119

Coos17100304

Goose Lake18020001

Lower Grande Ronde17060106

South Santiam17090006

Tualatin17090010

Lower Rogue17100310

Middle Snake-Succor17050103

Trout17070307

Alsea17100205

Wallowa River17060105

Little Deschutes17070302

Brownlee Reservoir17050201

Middle Rogue17100308

Crooked-Rattlesnake17050109

Lower Malheur17050117

Upper Klamath River18010206

Chetco17100312

Upper Grande Ronde River17060104

Middle Fork Willamette17090001

ImnahaRiver

17060102

Bully17050118

Molalla-Pudding17090009

Siletz-Yaquina17100204

Upper Quinn16040201

North Santiam17090005

Smith River18010101

Sixes17100306

Wilson-Trask-Nestucca17100203

DonnerUnd Blitzen17120003

LowerColumbia-Sandy

17080001

LowerWillamette17090012

Harney-Malheur Lakes17120001

MiddleWillamette17090007

HellsCanyon

17060101

Middle Fork John Day17070203

UpperKlamath Lake18010203

Lower Snake-Asotin17060103

Lower Columbia17080006

Lower Columbia-Clatskanie17080003

Coast ForkWillamette17090002

Thousand-Virgin16040205 East Little Owyhee

17050106

South Fork Owyhee17050105

Butte18010205

Lower Klamath River18010209

Middle Snake-Payette17050115

Siltcoos17100207

Necanicum17100201

Oregon Subbasins

StraitOf Georgia17110002

Kitsap17110019

Kitsap17110019

Kitsap17110019

HoodCanal

17110018

Similkameen17020007

Lake Roosevelt17020001

Colville17020003

Pend Oreille17010216

Little Spokane17010308

Lower Spokane17010307

Rock Creek17060109

Hangman17010306

Coeur D'Alene Lake17010303

Upper Spokane17010305

Pend Oreille Lake17010214

Priest17010215

Fraser17110001

Lower Crab17020015

Lower Yakima17030003

Methow17020008

Upper Crab17020013

Palouse River17060108

Okanogan17020006

Upper Yakima17030001

Walla Walla17070102

Entiat17020010

Cowlitz17080005

Klickitat17070106

Upper Skagit17110005

Wenatchee17020011

Naches17030002

Puyallup17110014

Lewis17080002

Chief Joseph17020005

Sanpoil17020004

Middle Columbia-Hood17070105

Willapa17100106

Kettle River17020002

Middle Columbia-Lake Wallula17070101

Upper Chehalis17100103

Hoh-Quillayute17100101

Nooksack17110004

Queets-Quinalt17100102

Skykomish17110009

Nisqually17110015

Sauk17110006

Lake Chelan17020009

Upper Cowlitz17080004

Lower Grande Ronde17060106

Upper Columbia-Priest Rapids17020016

Moses Coulee17020012

Lower Snake-Tucannon17060107

Snoqualmie17110010

Lower Chehalis17100104

Stillaguamish17110008

Banks Lake17020014

Hood Canal17110018

Dungeness-Elwha17110020

Lower Columbia17080006

Lower Snake River17060110

LowerWillamette17090012

LowerColumbia-Sandy

17080001

Kitsap17110019

Similkameen17020007

Duwamish17110013

Lower Skagit17110007

LakeWashington17110012

Lower Snake-Asotin17060103

LowerColumbiaClatskanie17080003

Clearwater17060306

GraysHarbor

17100105

Snohomish17110011

Crescent-Hoko17110021

Skokomish17110017

StraitOf Georgia17110002

Deschutes17110016

San Juan Islands17110003

Washington SubbasinsPuget Sound Marine ZonesNorth SoundStrait of Juan de FucaAdmiralty InletWhidbey BasinHood CanalSouth Sound

Clearwater17060306

Big Lost17040218

St. Joe17010304

Palouse River17060108

Weiser17050124

Upper Salmon17060201

Lemhi17060204

Payette17050122

Lochsa17060303

Burnt River17050202

Little Lost17040217

Rock Creek17060109

Middle Salmon-Panther17060203

Lower Grande Ronde17060106

Lower Selway17060302

Pahsimeroi17060202

Upper Selway17060301

Wallowa River17060105

South Fork Salmon17060208

Hangman17010306

Brownlee Reservoir17050201

Lower Snake-Tucannon17060107

Birch17040216

Middle Salmon-Chamberlain17060207

Lower Malheur17050117

Upper Middle Fork Salmon17060205

South Fork Clearwater17060305

Lower Middle Fork Salmon17060206

Big Wood17040219 Lower Boise

17050114

Upper North Fork Clearwater17060307

Little Salmon17060210

South Fork Payette17050120

Lower Snake-Asotin17060103

Coeur D'Alene Lake17010303

LowerSalmon

17060209

ImnahaRiver

17060102

North ForkPayette

17050123

Boise-Mores17050112

Lower NorthFork Clearwater

17060308

HellsCanyon

17060101

North and Middle Fork Boise17050111

South Fork Boise17050113

North ForkPayette

17050121

Lower Owyhee17050110

Middle Snake-Payette17050115

South Fork Coeur D'Alene17010302

Little Wood17040221

Middle ForkClearwater17060304

Middle Snake-Succor17050103

Lake Walcott17040209

Idaho Subbasins