Marmot Dam P-477

General information
Waterway	Sandy River
Current status	Removed
Type of facility	Conventional Hydro
Type of permit	FERC License
Year built	1912
Year retired	2008
Year removed	2007
FERC information
FERC docket #	P-477
FERC project name	Bull Run
Other projects with this FERC number	Little Sandy River Dam P-477
Ownership and operation
Owner	Portland General Electric Co
Owner type	Investor-Owned Utility
Transmission or distribution system owner	Portland General Electric Company

Marmot Dam on the Sandy River and Little Sandy Dam on the Little Sandy River were removed in 2007 and 2008 as part of decommissioning of Portland General Electric’s Bull Run Hydroelectric Project. Members of the Hydropower Reform Coalition participated in the negotiations that led to the settlement agreement for dam removal. Removal of the dams now allows the Sandy River to flow freely making upstream habitat more accessible to anadromous fish.

The former dam site is now in public ownership and managed as a day-use recreation site providing access to the Sandy River.