Lake Washington

Lake Washington is the second largest natural lake in Washington state, USA, 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.

Statistics

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Area of lake

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21,500 acres

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87.6 km²

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Area of drainage basin

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300,000 acres

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1,274 km²

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Volume

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2,350,000 acre-feet

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2.9 km³

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Depth (mean)

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108 ft

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32.9 m

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Depth (max)

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214 ft

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65.2 m

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Length

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13 miles

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21 km

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Height*

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20.6 ft

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6.3 m

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* Above Puget Sound mean lower low tide

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