Diablo Dam

Diablo Dam is one of three dams 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. The dam was built in Diablo Canyon, a gorge of solid granite with vertical walls rising from the river bed, yet were less than apart. Construction began in 1927, and was completed in 1930. The dam began generating electricity in 1936. Includes construction photos. The town of Diablo was established to house the workers building the dam.

The result was a power-generating dam that holds a reservoir known as Diablo Lake. At the time it was completed, Diablo Dam, at , was the tallest dam in the world. As of 1951, water from the dam operated two main generators, each with a capacity of 64.5 MW. The dam and its original associated power generation infrastructure were listed on the National Register of Historic Places in 1989.

Hydroelectric power capacity GeneratorNameplate Capacity (MW)3190.03290.0331.2341.2Total182.4

Climate The Western Regional Climate Center (WRCC) reports weather station 452157 at Diablo Dam since 1948, presently at with an elevation of . The dam is in a transitional maritime-mediterranean climate (Köppen: Cfb/Csb) depending on summer rainfall isotherm.

Panorama

Diablo Dam

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