Rock Island Dam

Rock Island, WA

Hydro-electric concrete dam built 1930 - '33

Photos 

Rock Island Dam

Photo taken by Richard Doody in October 2013

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Description 

Oldest dam on the Columbia River built by Stone & Webster Engineering for Puget Sound Power & Light Company. Construction began January 14, 1930 and was completed on February 1, 1933. Ownership subsequently passed to the Chelan County Public Utility District which expanded the powerhouse with six additional turbines 1951 - '53 and a second powerhouse with 8 more turbine 1974 - '79.

Update Log 

  • May 2, 2018: Added by Richard Doody

Sources 

  • Richard Doody