Wynoochee River Project

Tacoma Power developed the Wynoochee Hydroelectric Project by refitting the U.S. Army Corps of Engineers'  Wynoochee River dam in the foothills of the Olympic Mountains in Grays Harbor County. The Corps of Engineers built the dam in 1972 to provide flood control, industrial water storage for the City of Aberdeen and water for irrigation and to support the river's fishery. The dam is owned by the City of Aberdeen.

Tacoma Power built a powerhouse about one-quarter mile downstream from the dam. The powerhouse began generating electricity in 1994 and produces about 30 million kilowatt-hours of electricity each year, enough to serve 2,100 Northwest homes.

Take a Tour

A popular community service at the Wynoochee Project is free group tours. Tours are available for school, civic, business and recreational groups during regular working hours by appointment. To make arrangements for a tour, call Tacoma Power at 253-502-8759.