| Alder Lake | |
| Location: | Pierce County, Thurston County, Lewis County, Washington, United States |
| Coords: | 46.7708°N -122.2722°W |
| Type: | reservoir |
| Inflow: | Nisqually River |
| Outflow: | Nisqually River |
| Catchment: | 286mi2[1] |
| Basin Countries: | United States |
| Length: | 7miles |
| Area: | 3065acres |
| Shore: | 28miles |
| Elevation: | 1207feet at full pool |
| Islands: | 5 |
| Cities: | Elbe |
| Pushpin Map: | Washington#USA |
| Pushpin Map Alt: | Location of Alder Lake in Washington, USA. |
Alder Lake is a 7miles 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 by Tacoma Power 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.[2] The extinct town, in turn, was named for alder trees near the original site.[3] The current community of Alder is located north of the lake.
In 2021, Intel named its new microarchitecture after Alder Lake.