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.

Tours to commemorate Three Mile Dam centennial

May 16, 2014 02:20 PM

UPDATED May 16, 2014 02:30 PM

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