Skip to main content

Hydropower & Natural Resources

Tacoma Power’s hydropower system includes four hydroelectric projects across western Washington that generate approximately 3 billion kilowatt-hours of renewable electricity each year. Operating these projects also includes managing lands and reservoirs, supporting recreation, protecting natural resources and meeting federal licensing requirements. Explore the projects below to learn about each project’s history, recreation opportunities, environmental programs and ongoing stewardship efforts.

Aerial view of Mayfield Dam showing the curved concrete dam, spillway gates, reservoir, and river below, surrounded by forested hillsides.

Cowlitz River Project

Learn More
Drone view of Cushman Dam No. 2 with its curved concrete dam, reservoir, downstream channel, and surrounding evergreen forest.

Cushman Hydro Project

Learn More
Aerial view of LaGrande Dam, spillway, and downstream river surrounded by evergreen forest.

Nisqually River Project

Learn More
Drone view of Wynoochee Dam with the concrete dam spanning the reservoir, surrounded by evergreen forest and shoreline.

Wynoochee River Project

Learn More

More Than Hydropower

Generating renewable electricity is just one part of our work. Across our hydro projects, Tacoma Power manages lands and habitat, supports fisheries programs, conserves wildlife, maintains parks and recreation areas, partners with tribes and local organizations, and helps steward these natural resources for future generations.