
Lake Washington
Lake Washington is a lake of some 21,745 acres on the Lake Washington Ship Canal, in Washington. The lake is in King County. It…
State
This guide covers 45 lakes and reservoirs across Washington. 34 of them are reservoirs held back by a dam and 11 are natural lakes. Lake Sacajawea is the biggest, covering roughly 837,440 acres. The deepest water on record here is at Lake Chelan, about 1,486 feet. Rivers that feed or drain them include the Columbia River, the Lewis River and the Baker River. 16 of these lakes have a public gauge, so their water level on this site is a real reading rather than an estimate. The agency behind the most lakes here is US Bureau of Reclamation (Yakima Project). Across the state we map 21 named swimming spots and access points from federal and state sources.
Click a marker to open the lake page.
Each page has the live water level, weather, access points and sources.

Lake Washington is a lake of some 21,745 acres on the Lake Washington Ship Canal, in Washington. The lake is in King County. It…

Fed by the North Fork Skokomish River, Lake Cushman holds roughly 4,015 acres of water in Washington. Its shoreline falls inside…

Lake Chelan is a 33,359-acre reservoir on the Chelan River in Washington. You will find it in Chelan County. Management is in the…

Lake Merwin covers about 3,921 acres of the Lewis River in Washington. You will find it in Clark County. PacifiCorp manages it.…

Lake Sammamish is a lake of some 4,893 acres on the Sammamish River, in Washington. It lies in King County. Washington State…

Lake Roosevelt is a 100,389-acre reservoir in Washington. You will find it in Ferry County. It is managed by National Park…

Fed by the Cle Elum River, Cle Elum Lake holds roughly 4,566 acres of water in Washington. You will find it in Kittitas County.…

Banks Lake is a 26,886-acre reservoir on the Columbia River in Washington. Its shoreline falls inside Grant County. It is managed…

Kachess Lake covers about 4,540 acres of the Kachess River in Washington. The lake is in Kittitas County. It is managed by US…

Moses Lake covers about 6,715 acres of the Crab Creek in Washington. Its shoreline falls inside Grant County. It is managed by…

Lake Whatcom is a lake of some 4,925 acres on the Whatcom Creek, in Washington. It lies in Whatcom County. It is managed by City…

Lake Crescent is a 5,189-acre lake on the Lyre River in Washington. The lake is in Clallam County. It is managed by National Park…

Fed by the Wenatchee River, Lake Wenatchee holds roughly 2,481 acres of water in Washington. It lies in Chelan County. It is…

Lake Tapps is a 2,434-acre reservoir on the outflow = in Washington. You will find it in Pierce County. Cascade Water Alliance…

Fed by the Skagit River, Diablo Lake holds roughly 909 acres of water in Washington. Its shoreline falls inside Whatcom County.…
Readings are refreshed from the operating agency and stamped with the time they were taken. Check the level before planning a trip around a specific ramp or beach.
| Lake | Level | Full pool | How full |
|---|---|---|---|
| Lake Washington | — | — | no percent published |
| Lake Cushman | — | — | no percent published |
| Lake Chelan | 1,098.67 ft | — | no percent published |
| Lake Merwin | 233.00 ft | — | no percent published |
| Lake Sammamish | 25.71 ft | — | no percent published |
| Lake Roosevelt | — | — | no percent published |
| Cle Elum Lake | — | — | no percent published |
| Banks Lake | — | — | no percent published |
| Kachess Lake | — | — | no percent published |
| Moses Lake | 1,046.70 ft | — | no percent published |
| Lake Whatcom | — | — | no percent published |
| Lake Crescent | — | — | no percent published |
| Lake Wenatchee | — | — | no percent published |
| Lake Tapps | 540.60 ft | — | no percent published |
| Diablo Lake | — | — | no percent published |
Lakes and swimming spots near the main towns.
Seattle Tacoma Bellevue Kent Everett Renton Federal Way Kirkland