Swan Falls P-503

General information

Waterway  Snake River
Current status   Active 
Type of facility Conventional Hydro
Mode of hydropower generation Reregulating
Type of permit FERC License

FERC information

FERC docket # P-503
FERC project name Swan Falls
Permit issued 9/23/12
Permit expiration 8/27/42

Ownership and operation

Owner Idaho Power Co
Owner type Investor-Owned Utility
Year first online (conventional hydro) 1994
Transmission or distribution system owner Idaho Power Co

Power and generating capacity

Number of units 2
Total capacity from hydraulic turbine-generator units within each plant 25.0 mW
Average annual net hydropower generation 121,193.9 mWH

The project is located on the Snake River, in Ada and Owyhee Counties, Idaho in the southwestern portion of the Snake River Plain. The Project consists of a 1,218-foot-long, 88-foot-high concrete gravity and rock-fill dam. The Swan Falls Project reservoir is a re-regulating reservoir.



License Application Filed 06-28-2008
Final EIS Issued 08-06-2010
License Issued 09-28-2012

News and updates

From California Trout11/22/2021

Update: Potter Valley Project on the Eel River

From Idaho Rivers United11/17/2021

What happens to fish populations when dams are removed?

See all news and updates