WA

Alder P-1862


General information

Waterway  Nisqually 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-1862
FERC project name Nisqually River
Other projects with this FERC number
Permit issued 3/2/97
Permit expiration 2/24/37

Ownership and operation

Owner Tacoma City of
Owner type Publicly Owned Utility
Year first online (conventional hydro) 1945
Transmission or distribution system owner City of Tacoma - (WA)

Power and generating capacity

Number of units 2
Total capacity from hydraulic turbine-generator units within each plant 50.0 mW
Average annual net hydropower generation 207,652.5 mWH

The Nisqually Hydroelectric Project includes Alder Dam and La Grande Dam on the Nisqually River. The first hydropower project was constructed in 1912 and replaced by the current two-dam project in 1945.

News and updates

From Trout Unlimited6/2/2021

Worrying about water

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