Cottage Grove Dam

Downstream view of the Cottage Grove Dam spillway.
Courtesy of the U.S. Army Corps of Engineers

Cottage Grove Dam is situated five miles south of the city of Cottage Grove on the Coast Fork tributary of the Willamette River. It drains an area of 104 square feet into a large reservoir that can store up to 30,000 acre feet of water. The U.S. Army Corps of Engineers started work on this earthen dam in 1940, completing the project at the end of World War II in 1945.

Finished spillway at Cottage Grove Dam. Many publicity shots of dams show water flowing
over the spillway, an event that dam operators avoid otherwise.
Courtesy of the U.S. Army Corps of Engineers

Herschel Henderly's description of the Cottage Grove Dam