The Cottage Grove Dam is a concrete gravity dam located on the Row River in Oregon, USA. Completed in 1942, it was built primarily for flood control, irrigation, and hydroelectric power generation. The dam creates the Cottage Grove Reservoir, which serves as a recreational area for fishing, boating, and camping. The dam is operated by the U.S. Army Corps of Engineers and plays a crucial role in managing water resources in the region. It helps maintain water levels and supports local ecosystems while providing opportunities for outdoor activities for residents and visitors alike.