Washington River Map (PDF) | Major Rivers & Lakes in Washington

Written and Fact-checked by 青青草视频 Editors | Updated On: April 03, 2026 | 15:05 ET

Washington River Map showing major rivers in Washington, River start and end point, county boundaries.

River Map of Washington State

About Map: Washington River Map showing major rivers in Washington, county boundaries and state boundary.

PDF Map - Free Download Washington River Map, United States

Washington Map	Counties in Washington	Cities in Washington
Washington Zipcodes	Airports in Washington	US Zip code Map
Washington Area Codes	Washington River Map	-

Rivers and Waterways in Washington

Washington鈥檚 river systems are shaped by mountains, forests, and coastal regions, with most waterways draining into the Pacific Ocean. The Cascade Range divides the state, with western rivers flowing directly to the coast and eastern rivers feeding into the Columbia River system. Snowmelt from the mountains plays a major role in river flow. Numerous lakes and reservoirs support hydropower, irrigation, drinking water, and recreation across Washington鈥檚 diverse landscape.

Major Rivers in Washington

River	Length (Approx.)	Region	Flows Into
Columbia River	1,243 mi	South	Pacific Ocean
Snake River	1,078 mi	East	Columbia River
Yakima River	214 mi	Central	Columbia River
Spokane River	111 mi	East	Columbia River
Skagit River	150 mi	North	Puget Sound
Chehalis River	115 mi	West	Pacific Ocean
Wenatchee River	53 mi	Central	Columbia River
Okanogan River	115 mi	North	Columbia River
Cowlitz River	105 mi	Southwest	Columbia River
Lewis River	95 mi	Southwest	Columbia River
Green River	65 mi	West	Duwamish River
Puyallup River	45 mi	West	Puget Sound
Dungeness River	32 mi	Northwest	Strait of Juan de Fuca
Nooksack River	52 mi	North	Puget Sound
Elwha River	45 mi	Northwest	Pacific Ocean
Hoh River	56 mi	West	Pacific Ocean
Quinault River	69 mi	West	Pacific Ocean
Nisqually River	81 mi	West	Puget Sound

Major Lakes in Washington

Lake	Type	Region
Lake Washington	Natural lake	West
Lake Chelan	Natural lake	Central
Lake Roosevelt	Reservoir	North
Lake Sammamish	Natural lake	West
Moses Lake	Natural lake	Central
Ross Lake	Reservoir	North
Lake Wenatchee	Natural lake	Central
American Lake	Natural lake	West
Swift Reservoir	Reservoir	Southwest
Riffe Lake	Reservoir	Southwest

Major River Basins in Washington

Washington鈥檚 river basins are dominated by the Columbia River system, with additional coastal basins draining directly into the Pacific Ocean. These basins are essential for hydropower, agriculture, and ecosystem health.

Columbia River Basin
Snake River Basin
Yakima River Basin
Skagit River Basin
Chehalis River Basin
Spokane River Basin
Cowlitz River Basin
Nooksack River Basin
Puget Sound Basin

Washington Rivers Facts

State	Washington
Total Rivers & Streams	140,000+ miles of streams
Major Rivers	Columbia, Snake, Yakima, Spokane
Total Waterway Length	145,000+ miles
Main Drainage	Pacific Ocean & Columbia River System
Longest River	Columbia River
Shortest River	Dungeness River
Major River Basins	9 Primary Basins
Primary Outlet	Pacific Ocean
Key Uses	Hydropower, irrigation, fisheries, recreation
Longest River Within State	Yakima River
Number of River Basins	8鈥�10 Basins
Major Reservoirs	Lake Roosevelt, Ross Lake, Swift Reservoir
Primary Water Source	Snowmelt and surface water

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