Largest lakes & reservoirs in Washington by acres
There is no widely-accepted minimum surface area that defines a lake. What LakeLubbers describes as a lake, you might call a pond. Acreage of a lake (or sometimes square kilometers) is most often measured at the top surface area when the lake is at normal elevation. The surface area can be considerably smaller or larger when lake levels are lower or higher than normal. North America’s Lake Superior is the world’s largest freshwater lake by this measure.The other measure of a lake’s size is the lake’s water volume. By that measure, the world’s largest freshwater lake is Lake Baikal in Siberia.
You can find many of the world’s largest lakes (acres) on LakeLubbers in the comparison table below. Note: For some lakes, "Largest Lakes - Acres" data is unknown or does not apply, so you may see fewer lakes than the total 58 articles we have published for Washington lakes.
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Below are lakes within USA > US West Region > Washington > Compared by surface area in acres. This list does not represent all lakes in Washington, only the 58 Washington lake articles we have published on the LakeLubbers website.
Lake name | Surface area in acres | Lake description |
---|---|---|
Lake Tapps (Seattle & Puget Sound Region, WA, US West Region, USA, Washington) |
2,780 ac | Also known as Tapps Reservoir Located in the populous Seattle and Puget Sound Region of Washington, Lake Tapps delivers water supply, recreation and sound fish ecology to residents… |
Keechelus Lake, WA (North Central Washington, US West Region, USA, Washington) |
2,560 ac | Also known as Lake Keechelus, Keechelus Reservoir It is a picture postcard – snow capped mountains mirrored back in clean, clear, mountain water. Set against the backdrop of Washington’s Cascade Mount… |
Lake Wenatchee, WA (North Central Washington, US West Region, USA, Washington) |
2,480 ac | Lake Wenatchee is a high mountain lake located in the Wenatchee National Forest in the Cascade Mountains of Washington state. Fed by the Little Wenatc… |
Vancouver Lake (Southwest Washington, US West Region, USA, Washington) |
2,286 ac | Lying serenely in the Southwest Region of Washington state, Vancouver Lake provides a quiet respite from the cities of Vancouver, Washington and its n… |
Mayfield Lake (Seattle & Puget Sound Region, WA, US West Region, USA, Washington) |
2,200 ac | Mayfield Lake is cradled in the foothills of the Cascades in Lewis County, Washington. This 2,200-acre reservoir is conveniently located close to Moun… |
Rock Lake (Northeast Washington, US West Region, USA, Washington) |
2,190 ac | Deep, dark and mysterious describes Northeast Washington’s Rock Lake. Largest and deepest of the many lakes in the ‘Channeled Scablands’, Rock lake co… |
Bumping Lake, WA (South Central Washington, US West Region, USA, Washington) |
1,300 ac | Also known as Bumping Reservoir Lying near the shadow of Mt. Rainier, Bumping Lake is the first of six reservoirs owned and operated by the Bureau of Reclamation. Part of the Yakima… |
Newman Lake, WA (Northeast Washington, US West Region, USA, Washington) |
1,200 ac | Newman Lake is a natural 1,200-acre lake located about 20 miles northeast of Spokane, Washington. Although Newman Lake is relatively small compared to… |
Deer Lake, WA (Northeast Washington, US West Region, USA, Washington) |
1,146 ac | Deer Lake, located in Stevens County, Washington, is a spring-fed and snow-fed lake with approximately a 1,150-acre surface in the Colville River wate… |
American Lake, WA (Seattle & Puget Sound Region, WA, US West Region, USA, Washington) |
1,100 ac | Less than three miles inland from Puget Sound, American Lake is one of the lesser known vacation destinations in Washington’s Seattle-King County Regi… |
Loon Lake, WA (Northeast Washington, US West Region, USA, Washington) |
1,100 ac | Crystal clear water from a natural spring fills Loon Lake located in Stevens County in northeastern Washington. In a beautiful mountain setting surrou… |
Billy Clapp Lake, WA (North Central Washington, US West Region, USA, Washington) |
1,010 ac | Located in north central Washington, two miles northeast of Stratford, Billy Clapp Lake offers visitors year round access to its deep blue waters. Bil… |