To dam or not to dam?

The Minnesota DNR has removed more than 50 dams statewide during the past thirty years and has found that an average of 73% of the lost species return to these rivers once the dams are gone. Despite the obvious ecological benefits, however, dam removal isn’t always an easy decision.

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State of the Mississippi River

We’ve achieved a 35% reduction in phosphorus concentrations in the metro Mississippi River, mostly due to improvements at wastewater treatment plants, but that improvement is somewhat counteracted by the increase in flow coming from upstream.

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