Thompson's Mill Project

Willamette River Basin; Calapooia River, Linn County, Oregon

Project Profile

The Thompson's Mill project blocked passage and affected stream flow and water quality for ESA-listed fish.

Listed Species

Upper Willamette River Chinook

Upper Willamette River steelhead


State of Oregon Parks and Recreation Department (OPRD)

FERC Relicensing Status

The State of Oregon removed Sodom and Shearer Dams in 2011. The state park now in place is using the associated mill as an interpretive center. OPRD is designing a closed system to allow water use for mill demonstration while using screened inflow which resolves the potential for fish entrainment. The State will continue to monitor river conditions following dam removal for 10 years.


Federal Energy Regulatory Commission

FERC eLibrary: Docket #P-9169

NOAA Fisheries Biological Opinion