Major US Watersheds

Watershed Boundaries

Boundary Lines

Altamaha Watershed
Elevation Derivatives for National Applications (EDNA)
http://edna.usgs.gov
View the Altamaha Watershed

Apalachicola Watershed
Elevation Derivatives for National Applications (EDNA)
http://edna.usgs.gov
View the Arkansas River Watershed

Arkansas Watershed
Elevation Derivatives for National Applications (EDNA)
http://edna.usgs.gov
View the Arkansas River Watershed

Atchafalaya Watershed
View the Atchafalaya Watershed

Biloxi Watershed
View the Biloxi Watershed

Black Watershed
View the Black Watershed

Brazos Watershed
View the Brazos River Watershed

Calcasieu Watershed
View the Calcasieu Watershed

Caloosahatchee Watershed
View the Caloosahatchee Watershed

Cape Fear Watershed
View the Cape Fear Watershed

Chehalis Watershed
View the Chehalis Watershed

Chesapeake Bay Watershed
View the Chesapeake Bay Watershed

Cheyenne Watershed
View the Cheyenne River Watershed

Choctawhatchee Watershed
View the Choctawhatchee Watershed

Chowan Watershed
View the Chowan Watershed

Colorado Watershed
View the Colorado River Watershed

Colorado, Texas Watershed
View the Colorado River (Texas) Watershed

Columbia Watershed
View the Columbia River Watershed

Connecticut Watershed
View the Connecticut Watershed

Delaware Watershed
View the Delaware Watershed

Edisto Watershed
View the Edisto Watershed

Eel Watershed
View the Eel Watershed

Escambia Watershed
View the Escambia Watershed

Everglades Watershed
View the Everglades Watershed

Great Basin Watershed
View the Great Basin Watershed

Great Lakes Watershed
View the Great Lakes Watershed

Hudson Watershed
View the Hudson Watershed

Kansas Watershed
View the Kansas River Watershed

Kennebec Watershed
View the Kennebec Watershed

Klamath Watershed
View the Klamath River Watershed

Lake Champlain Watershed
View the Lake Champlain Watershed

Merrimack Watershed
View the Merrimack Watershed

Mississippi Watershed
View the Mississippi River Watershed

Missouri Watershed
View the Missouri River Watershed

Mobile Watershed
View the Mobile Watershed

Navidad Watershed
View the Navidad Watershed

Neuse Watershed
View the Neuse Watershed

Nueces Watershed
View the Nueces River Watershed

Ochlockonee Watershed
View the Ochlockonee Watershed

Ogeechee Watershed
View the Ogeechee Watershed

Ohio Watershed
View the Ohio River Watershed

Pajaro Watershed
View the Pajaro Watershed

Pamlico Watershed
View the Pamlico Watershed

Pascagoula Watershed
View the Pascagoula Watershed

Peace Watershed
View the Peace Watershed

Pearl Watershed
View the Pearl Watershed

Pee Dee Watershed
View the Pee Dee Watershed

Penobscot Watershed
View the Penobscot Watershed

Platte Watershed
View the Platte River Watershed

Puget Sound Watershed
View the Puget Sound Watershed

Rainy Watershed
View the Rainy Watershed

Red Watershed
View the Red Watershed

Red River Watershed
View the Red River Watershed

Rio Grande Watershed
View the Rio Grande Watershed

Roanoke Watershed
View the Roanoke Watershed

Rogue Watershed
View the Rogue Watershed

Sabine Watershed
View the Sabine Watershed

Sacramento/San Joaquin Watershed
View the Sacramento/San Joaquin Watershed

Saint John Watershed
View the Saint John Watershed

Saint Johns Watershed
View the Saint Johns Watershed

Salinas Watershed
View the Salinas Watershed

San Francisco Bay Watershed
View the San Francisco Bay Watershed

San Gabriel Watershed
View the San Gabriel Watershed

Santa Maria Watershed
View the Santa Maria Watershed

Santa Ynez Watershed
View the Santa Ynez Watershed

Santee Watershed
View the Santee Watershed

Satilla Watershed
View the Satilla Watershed

Savannah Watershed
View the Savannah Watershed

Souris Watershed
View the Souris Watershed

Suwannee Watershed
View the Suwannee Watershed

Tampa Bay Watershed
View the Tampa Bay Watershed

Trinity Watershed
View the Trinity Watershed

Umpqua Watershed
View the Umpqua Watershed

Waccamaw Watershed
View the Waccamaw Watershed

Withlacoochee Watershed
View the Withlacoochee Watershed

Yellow Watershed
View the Yellow Watershed

Yellowstone Watershed
View the Yellowstone River Watershed

USGS Identifier