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Photo of the spillway at the Bonneville Lock and Dam, which slowly releases water from behind the dam back into the Columbia River. The riffles in the flow act as a ladder for spawning fish that allows them to travel upstream.
Tags: bonneville lock and dam , columbia river , columbia river gorge , spillway , united states dams , united states reservoirs , united states rivers
Added to Earth - A Work in Progress on June 4, 2014.
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