West Extension Irrigation District is celebrating the 100th anniversary of the building of Three Mile Dam, across the Umatilla River. This photo is from construction of the dam in 1914.
West Extension Irrigation District is celebrating the 100th anniversary of the building of Three Mile Dam, across the Umatilla River. This photo is from construction of the dam in 1914.
West Extension Irrigation District is celebrating the 100th anniversary of the building of Three Mile Dam, across the Umatilla River. This photo is from construction of the dam in 1914.

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May 16, 2014 2:20 PM

Tours to commemorate Three Mile Dam centennial

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