A map of the Columbia River watershed, which covers much of Washington, Oregon and Idaho and parts of Montana and British Columbia.

CANADA

BRITISH

COLUMBIA

Vancouver

Clark

Fork

Seattle

MONTANA

WASHINGTON

Columbia River

Salmon

River

Portland

Snake

River

OREGON

IDAHO

Boise

200 miles

Crescent City

A map of the Columbia River watershed, which covers much of Washington, Oregon and Idaho and parts of Montana and British Columbia.

CANADA

BRITISH

COLUMBIA

Vancouver

Clark

Fork

Seattle

MONTANA

WASHINGTON

Columbia River

Portland

Snake

River

Salmon

River

OREGON

IDAHO

Boise

Crescent City

200 miles

The Columbia River
watershed