American shad and river herring are put in a truck and released in spawning habitats upstream of Safe Harbor or York Haven Dams. At Conowingo Dam, all fish that are caught in the fish passage facilities are sorted. Fish passage operations at the dams have been modified to help stop the spread of the invasive northern snakehead and blue catfish upstream into the Susquehanna River and reduce populations of flathead catfish that are already in the Susquehanna. Recently, several invasive fish species have become established in the lower Susquehanna River. The fish passage facilities are operated in the spring months for the primary purpose of providing upstream passage to American shad, blueback herring and alewife (collectively known as river herring) to reach their spawning grounds in the middle and upper Susquehanna River. York Haven Dam (York Haven Power Company).Safe Harbor Dam (Brookfield Renewable U.S.).Holtwood Dam (Brookfield Renewable U.S.).Conowingo Dam (Constellation Energy Corporation).The fish passage facilities are owned and operated by the hydroelectric companies: Fish and Wildlife Service's National Fish Passage Program is working to reconnect watersheds to benefit both wildlife and people. There are four hydroelectric dams on the lower Susquehanna River that provide upstream fish passage fish passageįish passage is the ability of fish or other aquatic species to move freely throughout their life to find food, reproduce, and complete their natural migration cycles. Millions of barriers to fish passage across the country are fragmenting habitat and leading to species declines.
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