Dam · United States

How much did Grand Coulee Dam cost to build?

The Grand Coulee Dam is the concrete gravity dam on the Columbia River in Washington State, United States, operated by the Bureau of Reclamation, begun on 16 July 1933 and with its reservoir full on 1 June 1942, expanded between 1967 and 1974 with the Third Powerplant. Wikipedia, citing Ortolano and Cushing (2000), says the original dam cost 163 million dollars in 1943 and the Third Powerplant 730 million dollars in 1973.

Final project cost

$163 million

Cost basis: 1943

Grand Coulee Dam.
U.S. Bureau of ReclamationPublic domain

Cost evidence

Basis of the published figure

Final project cost1943
npshistory.com

Project record

Timeline

  1. 16 July 1933

    Construction started

    npshistory.com
  2. 1 June 1942

    Opened or launched

    npshistory.com

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