1956 Press Photo Aerial view of the Dalles Dam at Columbia River - spx10712

Columbia River flow through eight skeletonized units of powerhouse following completion of rock-fill closure dam Wednesday, Oct. 17, 1956. Starting Sept. 10, 1956, with two shifts, contractors placed quarry-run rock in main river channel at rate of 9,000 cu. yds. a day, gradually forcing flow of river from natural channel through powerhouse. Approximately 300,000 cu. yds. of rock were in place when channel was completely closed.

Photo measures 9 x 6.75 inches.

Photo is dated 10-19-1956.



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