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 |
---|---|---|
Mason Lake, WA (Olympic Peninsula & Pacific Coast Region, WA, US West Region, USA, Washington) |
1,000 ac | Mason Lake is a natural freshwater lake with an elongated shape located in Mason County, part of Washington state’s Olympic Peninsula tourism region. … |
Curlew Lake, WA (Northeast Washington, US West Region, USA, Washington) |
921 ac | Nestled in a valley with breathtaking views of Colville National Forest, Ferry National Forest and mountain ranges, Curlew Lake is located 4.8 miles n … |
Lake Cavanaugh, WA (Northwest Washington & Islands, WA, US West Region, USA, Washington) |
844 ac | The snowy peaks of the Northern Cascades complement the multitude of evergreens that surround 844-acre Lake Cavanaugh. Located in Skagit County in Nor … |
Diamond Lake, WA (Northeast Washington, US West Region, USA, Washington) |
800 ac | Situated in the heart Washington’s Pend Oreille County, Diamond Lake is one of many sparkling bodies of water belonging to the Evergreen State. Centur … |
Coldwater Lake, WA (Southwest Washington, US West Region, USA, Washington) |
750 ac | Today Coldwater Lake is a peaceful, scenic 750-acre lake, but the violence of Mount St. Helens created the lake in 1980. On May 18, 1980, a 5.1 magnit … |
Eloika Lake, WA (Northeast Washington, US West Region, USA, Washington) |
662 ac | Eloika Lake is nestled in the foothills of the Selkirk Mountain Range in the northern most part of Spokane County in Washington. The Spokane Indian Na … |
Lake Union (Seattle & Puget Sound Region, WA, US West Region, USA, Washington) |
580 ac | Also known as Meman Hartshu, Small Lake, Tenass Chuck, Little Water Surrounded by four vibrant urban neighborhoods, Lake Union sits in the heart of Seattle, Washington. From orcas playing in Puget Sound to sea kayakers … |
Silver Lake Spokane County, WA (Northeast Washington, US West Region, USA, Washington) |
486 ac | Visitors to Northeast Washington can find a lakeside paradise at Silver Lake. Only 20 minutes southwest of Spokane, Silver Lake offers nearly 500 acre … |
Waitts Lake, WA (Northeast Washington, US West Region, USA, Washington) |
472 ac | Set against the tree-clad mountain backdrop of Northeast Washington, Waitts Lake is a beautiful destination for the whole family. Surrounded by nation … |
Lake Sutherland, WA (Olympic Peninsula & Pacific Coast Region, WA, US West Region, USA, Washington) |
361 ac | If you’re considering a visit to Lake Sutherland, in Washington’s Olympic Peninsula and Pacific Coast Region, you’re in for a real treat! The all-spor … |
Williams Lake WA (Northeast Washington, US West Region, USA, Washington) |
320 ac | Delighting anglers in eastern Washington, Williams Lake really serves up the trout! The long and narrow 320-acre lake is located less than 30 miles fr … |
Duck Lake (Olympic Peninsula & Pacific Coast Region, WA, US West Region, USA, Washington) |
278 ac | Duck Lake is an unlikely candidate for one of the best fishing lakes in southwestern Washington but holds its own with the best of contenders! Located … |