|Location||Mason County, Washington, United States|
|Primary inflows||Skokomish River|
|Primary outflows||Skokomish River|
|Basin countries||United States|
|Max. length||8.64 mi (13.90 km)|
|Max. width||1.10 mi (1.77 km)|
|Surface area||4,010 acres (1,620 ha)|
Lake Cushman is a 4,010-acre (16.2 km2) lake and reservoir on the north fork of the Skokomish River in Mason County, Washington. The lake originally was a long narrow broadening of the Skokomish River formed in a glacial trough and dammed by a terminal moraine from the last ice age, during the Vashon stage.
As a popular retreat for hiking, fishing, boating and kayaking, Lake Cushman's shoreline is dotted with resorts and rental cabins. The lake is notable for its beautiful crystal clear blue water and the huge round rocks surrounding it, as well as thick stands of hemlock, fir and cedar trees.
- Meany, Edmond S. (1923). Origin of Washington geographic names. Seattle: University of Washington Press. p. 138.
- Lake Levels and River Flows, Cushman Project Settlement, Tacoma Power
- Lake Cushman on the Official Tourism Web Site for Mason County
- Photograph of Lake Cushman circa 1899 from the Lick Observatory Records Digital Archive, UC Santa Cruz Library's Digital Collections