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The tug Defiance pushes four barges into The Dalles Dam navigational locks.       

 

The Army Corps of Engineers, Portland district, will close the navigational locks on three dams on the Columbia River March 9-22 for annual maintenance: Bonneville (Columbia River mile 146.1) March 9-22; The Dalles (Columbia River mile 191.5); and John Day (Columbia River Mile 215.6).