Dam conversion projects a win-win for the Red River

February 11, 2012 at 6:00 pm in Grand Forks Herald

The rock-riffle structures that have replaced seven of the eight low-head dams on the Red River still hold back water to create deeper upstream pools. But instead of spilling over the dam in a steep vertical drop in turn creating the dangerous roller currents the water descends on a gradual slope over boulders placed in strategic rows downstream.
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