Lakes in Washington
Washington contains Lake Chelan, a 50-mile glacier-carved fjord reaching 1,486 feet deep into the North Cascades, and Seattle’s Lake Washington. Explore interactive maps, depths, surface areas, public boat ramps, and fishing spots for lakes across Washington.
Interactive Lake Map of Washington
Washington Lake Directory
Showing 2 verified lakes in Washington

Lake Chelan
Chelan County, WA
Lake Chelan is a narrow, 50.5-mile long glacier-carved fjord lake located in north-central Washington. Reaching a maximum depth of 1,486 feet, it is the third-deepest lake in the United States and the 26th deepest in the world. The lake’s bottom is 386 feet below sea level (a cryptodepression). The remote northern tip at Stehekin is accessible only by boat, floatplane, or backpacking trail through the North Cascades National Park.

Lake Crescent
Clallam County, WA
Lake Crescent is a pristine, deep glacial lake located in the northern foothills of the Olympic Mountains inside Olympic National Park in Washington. Famous for its jaw-dropping crystal clarity and iridescent blue color caused by a lack of nitrogen, the lake reaches 624 feet deep and is home to two endemic trout varieties: the Beardslee trout and the Crescenti cutthroat trout.
Frequently Asked Questions about Lakes in Washington
What is the largest lake in Washington?
Lake Chelan is the largest lake in Washington documented in our verified directory, spanning roughly 33,104 acres.
How many lakes does Washington have?
Official hydrological estimates catalog over 8,000 named lakes, reservoirs, ponds, and impoundments across Washington.