When Alder Dam was completed in 1945, it was one of the tallest dams in the nation, measuring 330 feet high and 1,600 feet long. The powerhouse has two 25,000-kilowatt turbine generators that produce enough electricity to serve 16,000 Northwest homes each year.
Alder Dam forms seven-mile-long Alder Lake. With 28 miles of shoreline and 3,065 acres of reservoir area at maximum elevation, Alder Lake is an inviting spot for boaters, water skiers, anglers and picnickers. Check out our parks and recreation facilities for Alder Lake.