Elwha Dam Removal Study: Steelhead Blocked By Dams Retained Genetic Diversity Needed To Resume Ocean-Going Migration

According to a new study examining the effects of removing dams on Washington’s Elwha River, dams do not impact the genetic diversity of steelhead. The findings indicate that steelhead populations cut off from the ocean by dams can rebound and maintain the same natural genetic diversity as fish populations below dams.

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