When Tacoma Power re-licensed Cushman Dams 1 and 2, the Washington Department of Natural Resources mandated the restoration of the spawning migration for salmon living in the lake. Once the fingerling size salmon are old enough, they instinctively swim downstream to the ocean where they live for three years. After that period, the mature salmon swim back up the same stream to Lake Cushman to spawn in the water where they were born. But since both dams block the salmon’s path up and downstream, they need some help getting around these barriers.
Tacoma Power has installed fish collectors at the top of Cushman Dam 1 (located directly on Lake Cushman) and at the base of Cushman Dam 2 (located on the North Fork Skokomish River). The fish collectors are floating platforms that funnel the fish into holding tanks for transport. The collectors capture the young fingerlings and adult salmon for later release into the North Fork Skokomish River and Lake Cushman respectively.
American Crane’s Jib