Cushman No. 1 Dam
Cushman No. 1 Dam stores water in Lake Cushman, the largest reservoir in the Cushman Hydroelectric Project. Water released from the lake passes through the Cushman No. 1 Powerhouse to generate renewable electricity before continuing downstream to Lake Kokanee and Cushman No. 2 Dam.
Completed in 1925, the dam and powerhouse work together with Cushman No. 2 Dam and the North Fork Powerhouse as part of Tacoma Power’s Cushman Hydroelectric Project. Cushman No. 1 has two 25,000-kilowatt generators with an installed capacity of 50,000 kilowatts.
Lake Cushman is a 4,010-acre reservoir along the southwestern boundary of Olympic National Park. The lake is a popular destination for boating, fishing and other outdoor recreation.
Questions? Reach out to Cushman@tacoma.gov.
At a Glance
- Dam type: Concrete arch/gravity and embankment
- Completed: 1925
- Height: 275 feet above bedrock
- Length: 1,111 feet
- Reservoir: Lake Cushman
- River: North Fork Skokomish River
- Powerhouse: Cushman No. 1 Powerhouse
- Generators: Two
- Installed capacity: 50,000 kilowatts
