Fish that are inadvertently drawn into a powerhouse intake structure and through a turbine.

Under the Magnuson-Stevens Fishery Conservation and Management Act, EFH applies to federally managed species. EFH includes all types of aquatic habitat where these managed fish spawn, […]

Areas where freshwater meets saltwater. Highly productive ecosystems.

An exemption is a small hydroelectric project having limited environmental impacts and meeting certain criteria so that it is exempt from licensing under Part I of […]

To completely remove or locally eliminate a species population from the facility’s affected area.

Water flows or turbulence that impede the ability of fish to locate an upstream or downstream fishway. False attraction flows can result from turbine discharge flows, […]

Animal species of a region or habitat.

Federal Energy Regulatory Commission – The independent federal agency in charge of regulation and oversight of interstate transmission of natural gas, oil, and electricity as well […]

The ability for fish to move safely and effectively upstream and downstream of an artificial obstruction.