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Lake Washington

Lake Washington is the second largest natural lake in Washington state, behind Lake Chelan[?], and the largest lake in King County. It is situated between Seattle to the west, Bellevue to the east, Renton to the south, and Kenmore to the north, and surrounds Mercer Island. It is fed by the Sammamish River[?] at its north end and the Cedar River[?] at its south, as well as a number of creeks, including Ravenna Creek[?]/University Slough[?] and Thornton Creek[?] on the west and Kelsey Creek[?], Juanita Creek[?], and Coal Creek[?] on the east.

Before construction of the Lake Washington Ship Canal in 1916, Lake Washington's outlet was the Black River[?], which joined the Duwamish River and emptied into Elliott Bay[?]. When the canal was opened, the level of the lake dropped nearly nine feet. The canal to Puget Sound became the lake's sole outlet, causing the Black River to dry up and disappear, as a few years earlier, the Cedar River had been diverted to empty into Lake Washington instead of the Black.

Shoreline cities and towns: (clockwise)
Seattle, Lake Forest Park, Kenmore, Kirkland, Yarrow Point, Clyde Hill, Hunts Point, Medina, Bellevue, Beaux Arts Village, Mercer Island, Newcastle, Renton



Area of lake 21,500 acres 87.6 sq km
Area of drainage basin 300,000 acres 1,274 sq km
Volume 2,350,000 acre-feet 2,900,000,000 cu m
Depth (mean) 108 feet 32.9 m
Depth (max) 214 feet 65.2 m
Length 13 miles 21 km
Height* 20.6 feet 6.3 m
* Above Puget Sound mean lower low tide

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