Organizational, Groups
Mayfield: Cowlitz River, WA
Located 65 miles south of Tacoma, Washington, Mayfield Dam is part of the two-dam Cowlitz Hydroelectric Project. Construction began in 1955 and power generation began in 1963.
Cushman 1: Skokomish River North Fork, WA
Tacoma City Light built, owns and operates the Cushman Hydroelectric Project, which consists of two dams on the North Fork of the Skokomish River, located on the Olympic Peninsula near the town of Hoodsport.
Rocky Reach: Columbia River, WA
The Rocky Reach Project is located in mid-Washington state on the Columbia River, about seven miles upstream from the city of Wenatchee. By river, the dam is 215 miles below the Canadian border and 473 miles above the…
Box Canyon: Pend Oreille River, WA
The Box Canyon Hydroelectric Project, completed in 1956, is located on the scenic Pend Oreille River, ninety miles north of Spokane, Washington. Pend Oreille PUD was the first PUD in the nation to build a hydro-project. The Box…
Mossyrock: Cowlitz River, WA
On the Cowlitz River, 13 miles upstream from the Mayfield Dam, Mossyrock Dam began generating power in 1968. It rises 605 feet from bedrock and created 23-mile long Riffe Lake. It is the highest dam in the Pacific Northwest.