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Proposals to remove underused dams and restore fish habitats emerged in the early 21st century with support from the state's Native American tribes; the first major dam removal was the Condit Dam near White Salmon in 2011, which was followed by two dams on the Elwha River near Port Angeles. As of 2024, 39 dams in Washington have been removed. [2]
Mossyrock Dam is a concrete arch-gravity dam on the Cowlitz River near Mossyrock in Lewis County, Washington, United States. The reservoir created by the dam is called Riffe Lake . The primary purpose of the dam is hydroelectric production while flood control is a secondary function. [ 1 ]
Lake Cushman (Twana: ʔiluʔəɬ) [1] is a 4,014.6-acre (16.247 km 2) [2] lake and reservoir on the north fork of the Skokomish River in Mason County, Washington.The lake originally was a long narrow broadening of the Skokomish River formed in a glacial trough and dammed by a terminal moraine from the Vashon Glaciation during the most recent ice age.
It was created by Mayfield Dam on the Cowlitz River, one of the dams in the Columbia River watershed. The Mayfield Dam was constructed in 1963 as a concrete arch and gravity dam. At 250 feet (76 m) high and capable of generating 162 megawatts, it supplies Tacoma Power with a large percentage of its entire hydroelectric power supply, second only ...
Gorge Dam is one of three along the upper Skagit River in Whatcom County, Washington, and part of the Skagit River Hydroelectric Project that supplies Seattle with some of its power needs. Construction on the original wooden Gorge Dam began in 1921, with its generators formally started by President Calvin Coolidge on September 17, 1924. [ 1 ]
Lower Granite Lock and Dam is a concrete gravity run-of-the-river dam in southeastern Washington in the United States. On the lower Snake River , it bridges Whitman and Garfield counties. [ 6 ] Opened 50 years ago in 1975, [ 1 ] [ 7 ] [ 8 ] the dam is located 22 miles (35 km) south of Colfax and 35 miles (56 km) north of Pomeroy .
Cushman Dam No. 1 is a hydroelectric dam on the North Fork of the Skokomish River in Mason County, Washington, which in derogation of the natural and treaty rights of the Native inhabitants impounded and enlarged the formerly natural Lake Cushman, leading to damage claims in excess of $5 billion and an eventual settlement agreement with the Skokomish tribe that terminates the right to operate ...
A diversion dam on the White River, near Buckley, routes water into a flume which empties into the east side of Lake Tapps. On the west side of the reservoir, water had originally been routed to the Dieringer Powerhouse to generate hydroelectricity , after which the water was returned to the White River, about 20 miles (32 km) downstream from ...