St. John

Penobscot

Kennebec

Androscoggin

Maine Coastal

Saco

Merrimack

Upper Connecticut

Lower Connecticut

Massachusetts-Rhode Island Coastal

Connecticut Coastal

Upper Hudson

Lower Hudson

Long Island

Upper Delaware

Lower Delaware

Mid Atlantic Coastal

Upper Susquehanna

West Branch Susquehanna

Lower Susquehanna

Upper Chesapeake

Potomac

Lower Chesapeake

James

Roanoke

Albemarle-Chowan

Pamlico

Neuse

Onslow Bay

Cape Fear

Upper Pee Dee

Lower Pee Dee

Santee

Edisto-South Carolina Coastal

Savannah

Ogeechee

Altamaha

St. Marys-Satilla

St. Johns

East Florida Coastal

Kissimmee

Southern Florida

Peace

Tampa Bay

Aucilla-Waccasassa

Suwannee

Ochlockonee

Apalachicola

Florida Panhandle Coastal

Choctawhatchee

Escambia

Coosa-Tallapoosa

Alabama

Black Warrior-Tombigbee

Mobile Bay-Tombigbee

Pascagoula

Pearl

Northwestern Lake Superior

St. Louis

Southwestern Lake Superior

Southcentral Lake Superior

Southeastern Lake Superior

Northwestern Lake Michigan

Fox

Southwestern Lake Michigan

Southeastern Lake Michigan

Northeastern Lake Michigan

Northwestern Lake Huron

Southwestern Lake Huron

Saginaw

St. Clair-Detroit

Western Lake Erie

Southern Lake Erie

Eastern Lake Erie

Southwestern Lake Ontario

Southeastern Lake Ontario

Oswego

Northeastern Lake Ontario

Northeastern Lake Superior

Lake Superior

Lake Michigan

Northern Lake Huron

Wanipitai River-French River

Eastern Georgia Bay

Eastern Lake Huron

Lake Huron

Northern Lake Erie

Lake Erie

Niagara

Lake Ontario and Niagara Peninsula

Lake Ontario

St. Lawrence

Lake Champlain-Richelieu River

Saint Francois River-Saint Lawrence River

Chaudiere River

Mojikit Lake-Ogoki River

Long Lake-Kenogami River

Allegheny

Monongahela

Upper Ohio-Beaver

Upper Ohio-Little Kanawha

Muskingum

Kanawha

Scioto

Guyandotte

Big Sandy

Great Miami

Middle Ohio-Raccoon

Middle Ohio-Little Miami

Licking

Kentucky

Green

Wabash

Patoka-White

Upper Cumberland

Lower Cumberland

Lower Ohio-Salt

Lower Ohio

French Broad-Holston

Upper Tennessee

Middle Tennessee-Hiwassee

Middle Tennessee-Elk

Lower Tennessee

Mississippi Headwaters

Upper Mississippi-Crow-Rum

Minnesota

St. Croix

Upper Mississippi-Black-Root

Chippewa

Upper Mississippi-Maquoketa-Plum

Wisconsin

Upper Mississippi-Skunk-Wapsipinicon

Iowa

Rock

Des Moines

Upper Mississippi-Salt

Upper Illinois

Lower Illinois

Upper Mississippi-Meramec

Kaskaskia

Lower Mississippi-Memphis

Hatchie-Obion

Town of Madrid-Saint Johns Bayou

Lower Mississippi-Helena

St. Francis

Lower White

Lower Arkansas

Lower Mississippi-Greenville

Yazoo

Upper Ouachita

Lower Ouachita

Lower Red

Boeuf-Tensas

Lower Mississippi-Natchez

Big Black-Homochitto

Lower Mississippi-Baton Rouge

Lake Maurepas

Lower Grand

Atchafalaya-Vermillion

Calcasieu-Mermentau

Lower Mississippi-New Orleans

Lake Pontchartrain

Central Louisiana Coastal

Souris

Upper Red

Devils Lake-Sheyenne

Rainy

Upper South Saskatchewan River

Missouri Headwaters

Upper Missouri

Marias

Fort Peck Lake

Musselshell

Milk

Missouri-Poplar

Upper Yellowstone

Big Horn

Tongue

Powder

Lower Yellowstone

Lake Sakakawea

Little Missouri

Cheyenne

Belle Fourche

Lake Oahe

Cannonball-Heart-Knife

Grand-Moreau

Fort Randall Reservoir

White

Niobrara

Lewis and Clark Lake

Big Sioux

North Platte

South Platte

Middle Platte

Lower Platte

Loup

Elkhorn

Missouri-Little Sioux

Missouri-Nishnabotna

Republican

Smoky Hill

Kansas

Big Blue

Grand

Chariton

Osage

Gasconade

Lower Missouri-Blackwater

Lower Missouri

Upper White

Upper Arkansas

Middle Arkansas

Upper Cimarron

Lower Cimarron

Arkansas-Keystone

Verdigris

Neosho

Upper Canadian

Middle Canadian

Lower Canadian

Upper Beaver

Lower Beaver

Lower North Canadian

Robert S. Kerr Reservoir

Lower Arkansas-Fourche La Fave

Prairie Dog Town Fork Red

Salt Fork Red

North Fork Red

Red-Pease

Red-Lake Texoma

Washita

Red-Little

Red-Saline

Big Cypress-Sulphur

Sabine

Neches

Upper Trinity

Lower Trinity

San Jacinto

Galveston Bay-Sabine Lake

Brazos Headwaters

Middle Brazos-Clear Fork

Middle Brazos-Bosque

Lower Brazos

Little

Upper Colorado

Middle Colorado-Concho

Middle Colorado-Llano

Lower Colorado

San Bernard Coastal

Lavaca

Guadalupe

San Antonio

Central Texas Coastal

Nueces

Southwestern Texas Coastal

Rio Grande Headwaters

Upper Rio Grande

Rio Grande-Elephant Butte

Rio Grande-Caballo

Mimbres

Rio Grande-Fort Quitman

Rio Grande-Amistad

Devils

Rio Grande Closed Basins

Upper Pecos

Lower Pecos

Rio Grande-Falcon

Lower Rio Grande

Rio Conchos

Rio Salado

Rio San Juan

Colorado Headwaters

Gunnison

Upper Colorado-Dolores

Upper Green

Great Divide Closed Basin

White-Yampa

Lower Green

Upper Colorado-Dirty Devil

Upper San Juan

Lower San Juan

Lower Colorado-Lake Mead

Little Colorado

Bill Williams

Upper Gila

Middle Gila

San Pedro-Willcox

Santa Cruz

Salt

Verde

Lower Gila-Agua Fria

Lower Gila

Rio Sonoyta

Rio De La Concepcion

Rio De Bavispe

Upper Bear

Lower Bear

Weber

Jordan

Great Salt Lake

Escalante Desert-Sevier Lake

Humboldt

Black Rock Desert

Truckee

Carson

Walker

Central Nevada Desert Basins

Kootenai

Pend Oreille

Spokane

Upper Columbia

Yakima

Snake Headwaters

Upper Snake

Middle Snake-Boise

Middle Snake-Powder

Lower Snake

Salmon

Clearwater

Middle Columbia

John Day

Deschutes

Lower Columbia

Willamette

Washington Coastal

Northern Oregon Coastal

Southern Oregon Coastal

Puget Sound

Oregon Closed Basins

Northern California Coastal

Klamath

Upper Sacramento

Lower Sacramento

Tulare-Buena Vista Lakes

San Joaquin

San Francisco Bay

Central California Coastal

Ventura-San Gabriel Coastal

Santa Ana

Laguna-San Diego Coastal

North Lahontan

Mono-Owens Lakes

Northern Mojave

Southern Mojave

Salton Sea

Southern Southeast Alaska

Central Southeast Alaska

Northern Southeast Alaska

Gulf of Alaska

Icy Strait-Chatham Strait

Copper River

Prince William Sound

Kenai Peninsula

Knik Arm

Susitna River

Western Cook Inlet

Kodiak-Shelikof

Cook Inlet

Aleutian Islands

Kvichak-Port Heiden

Nushagak River

Upper Kuskokwim River

Lower Kuskokwim River

Norton Sound

Northern Seward Peninsula

Kobuk-Selawik Rivers

Noatak River-Lisburne Peninsula

Kotzebue Sound

Western Arctic

Barrow Alaska

Colville River

Prudhoe Bay

Eastern Arctic

Headwaters Yukon River

White River-Yukon River

Fortymile River-Yukon River

Porcupine River

Chandalar-Christian River

Tanana River

Beaver Creek-Yukon River

Koyukuk River

Melozitna River-Yukon River

Outlet Yukon River

Hawaii

Maui

Kahoolawe

Lanai

Molokai

Oahu

Kauai

Niihau

Puerto Rico

Virgin Islands

Guam

Saipan

American Samoa