Posts

A fish passageway lets out water on the lower side of a dam
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Fighting for Fish

Floyd Nagler founded IIHR, then acted as director for 13 years. One of his most important projects was his work on the flow of the Mississippi river.
Four men stand in front of a dam
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IIHR Gives a Dam About Fish Passage

They may not know it, but millions of salmon in the Pacific Northwest have safely passed through major hydroelectric dams thanks in part to the problem-solving and modeling expertise of the engineers at IIHR—Hydroscience & Engineering