Dorena Lake Hydroelectric Project

Willamette River Basin; Row River, Coast Fork Willamette River, Lane County, Oregon

Project Profile

This proposed project would add hydropower to an existing flood control dam owned by the U.S. Army Corps of Engineers. The existing dam is not equipped with fish passage facilities. While some Chinook salmon were present in the Row River historically, NOAA Fisheries concluded that this river did not support an independent population and did not list Chinook under the ESA. However, some individual juvenile and adult Chinook from listed populations (McKenzie and Middle Fork Willamette) use lower reaches of the Coast Fork Willamette.  Additionally, Oregon Department of Fish and Wildlife has released hatchery juvenile Chinook into Mosby Creek, a tributary that enters the Coast Fork just below Dorena Dam, and adult fish are likely to return to the base of the dam in future years.

Listed Species

Upper Willamette River Chinook


Riverbank Power (formerly Symbiotics LLC)

FERC Relicensing Status

NOAA Fisheries issued a biological opinion in August 2008. FERC granted a 40-year hydropower license in late 2008. Construction began in June 2012. Riverbank Power must install a tailrace barrier to prevent fish injury or death from new hydropower generation, ensure that the river is not dewatered, and monitor streamflow and water quality downstream from the dam.


Federal Energy Regulatory Commission

FERC eLibrary: Docket #P-11945

NOAA Fisheries Biological Opinion