There are more than 80,000 dams in the United States, over 2,000 of which are used to produce hydroelectric power. These structures can significantly impact millions of migratory fish, including salmon, American eels, and American shad.
Improving downstream passage of fish traveling through dams and other hydropower structures poses considerable environmental challenges for hydropower. The HydroPASSAGE project developed toolsets for the hydropower industry that can mitigate environmental impacts on fish passage. These toolsets provide information that assist in design, operation, and evaluation of hydropower facilities that support fish habitats.