High Dam P-10551

General information

Waterway  Oswego River
Current status   Active 
Type of facility Conventional Hydro
Mode of hydropower generation Run-of-river
Type of permit FERC License

FERC information

FERC docket # P-10551
FERC project name High Dam
Permit issued 11/17/91
Permit expiration 10/27/31

Ownership and operation

Owner Oswego City of
Owner type Publicly Owned Utility
Year first online (conventional hydro) 1928
Transmission or distribution system owner Niagara Mohawk Power Corp.

Power and generating capacity

Number of units 4
Total capacity from hydraulic turbine-generator units within each plant 11.9 mW
Average annual net hydropower generation 43,546.2 mWH

The project is located at the Lock and Dam No. 6 on the Oswego River, in Oswego County, New York, 1.8 miles from its mouth at Lake Ontario.

The existing project facilities consist of a 35-foot-high, 500-foot-long dam with 10-inch-high flashboards, an existing navigation lock, an impoundment with a surface area of 240 acres and a storage capacity of 3,927 acre-feet, a forebay headgate structure, and a powerhouse containing four vertical propeller turbine-generator units with a combined rated capacity of 7,600 kW.


License Order Issued 11-22-1991

News and updates

From Hydropower Reform Coalition8/18/2022

30 Years of Hydro Reform!

From American Rivers10/3/2022

Supreme Court case puts your clean water at risk

See all news and updates