Alder Lake is a 7 mi (11 km) long reservoir on the Nisqually River in Eatonville, Washington in the U.S. state of Washington, which was created by the construction of Alder Dam in September 1944. At the very eastern end of the lake is the town of Elbe, Washington. The name of the lake recalls the former small town of Alder, which was flooded in 1945 by the impounded water of the lake and disappeared. The extinct town, in turn, was named for alder trees near the original site.
|Location||Pierce County, Thurston County, Lewis County, Washington, United States|
|Primary inflows||Nisqually River|
|Primary outflows||Nisqually River|
|Catchment area||286 sq mi (740 km2)|
|Basin countries||United States|
|Max. length||7 mi (11 km)|
|Surface area||3,065 acres (1,240 ha)|
|Shore length1||28 mi (45 km)|
|Surface elevation||1,207 ft (368 m) at full pool|
|1 Shore length is not a well-defined measure.|
- "Alder Lake". Geographic Names Information System. United States Geological Survey.
- "Tacoma Public Utilities - Power Statistics".
- "Old Alder: Visit before it vanishes". Washington, Our Home. Retrieved 2017-07-20.
- "Thurston County Place Names: A Heritage Guide" (PDF). Thurston County Historical Commission. 1992. p. 1. Retrieved 28 March 2018.
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