Green Peter & Foster Dams on the Middle Santiam River

Green Peter Dam is located at river mile 5.5 on the Middle Santiam River, 11 miles northeast of Sweet Home, Oregon. Green Peter has two hydropower generating units capable of producing a total of 80 megawatts.

Foster Dam is located at river mile 38.5 on the South Santiam River, at the confluence of the South Santiam and Middle Santiam rivers, four miles northeast of Sweet Home, Oregon. Foster Dam is located about 7 miles downstream of Green Peter Dam, and is used to regulate water releases from Green Peter Dam and flows from the south Santiam River. Foster Dam has two generators capable of producing 10 megawatts each.

Carrying out the Reasonable and Prudent Alternative (RPA) from the 2008 Willamette Project Biological Opinion requires a suite of actions determined necessary to protect ESA-listed Upper Willamette River Spring Chinook salmon and Upper Willamette River Winter Steelhead ESUs. Key actions which apply for all of the project dams covered under the 2008 Opinion include:

In addition, RPA actions for Green Peter and Foster Dams Dams include:

More information about this and other Willamette Valley Projects