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
Permit issued 9/23/2012
Permit expires 8/27/2042

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 Sportfishing Protection Alliance1/23/2021

CSPA Defends Cold Water for North Fork Feather River & Lake Almanor

From American Rivers1/22/2021

UN report: Aging dams pose growing threat

See all news and updates