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  3. HydroPASSAGE

About HydroPASSAGE

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.

Read about HydroPASSAGE in this Hydro Review article by the technical team.

Advancing hydropower for fish and industry 

HydroPASSAGE toolsets enable researchers and industry to:

  • Quantify the physical stressors at hydropower dams and assess effects on fish, such as injury and mortality, to support downstream passage evaluations of over 20 different fish species including American eel, Chinook salmon, and American shad.
  • Better understand how fish respond when exposed to hydraulic and physical stressors associated with turbines and other hydropower structures, such as spillways, sluiceways, and bypass systems. 
  • Support the development of new hydropower turbines, evaluate the performance of installed units, and understand the effects of changing operations on fish passage.

Research Priorities 

Research priorities for the HydroPASSAGE project included:

man in checkered shirt is wearing gloves and sitting in front of a computer

1. Improving the biological performance of hydropower turbines and understanding fish resiliency to turbine passage.

Experiments conducted for this project provided important biological response information, such as impacts to fish from exposure to forces that may be encountered in the turbine environment. Fish species prioritized for investigation were those that possess traits that increase their likelihood of going through turbines (e.g., migratory habits), sensitivity of response to turbine stressors (e.g., scale type for fluid shear, swim bladder type for rapid decompression), regulatory or conservation concern, or presence in river systems where new hydropower construction is scheduled.

 

 

man sits at desk conducting data research

2. Continuing to apply tools and technologies for next-generation hydropower: 

The HydroPASSAGE project focused on the development of toolsets and information that can be used to mitigate the impacts of hydropower turbines.

File

HydroPASSAGE Overview Flyer

Research topics

Hydropower
Hydropower and the Electric Grid
Environmental Performance of Hydropower

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