Merwin P-935

General information
Waterway	Lewis River
Current status	Active
Type of facility	Conventional Hydro
Mode of hydropower generation	Reregulating
Type of permit	FERC License
FERC information
FERC docket #	P-935
FERC project name	Merwin
Permit issued	6/21/2008
Permit expires	5/27/2058
Ownership and operation
Owner	PacifiCorp
Owner type	Investor-Owned Utility
Year first online (conventional hydro)	1931
Transmission or distribution system owner	PacifiCorp
Power and generating capacity
Number of units	4
Total capacity from hydraulic turbine-generator units within each plant	136.0 mW
Average annual net hydropower generation	510,540.1 mWH

The Merwin Project (P-935) obtained its license in combination with three other projects: Swift No. 1 (P-2111), Yale Project (P-2071), and Swift No. 2 (P-2213). Collectively, these projects have once license and are known as Lewis River Projects.

The Merwin Project is the oldest and most downstream of the Lewis River Projects. It is located on the North Fork of Lewis River in Cowlitz and Clark Counties, WA and includes a concrete arch dam 313-foot-high and 1,252 feet wide.