Dorena Dam, located in Cottage Grove, Oregon, is a key structure managed by the US Army Corps of Engineers to reduce flood risks in the region. Built in 1949, this earth dam stands at 135 feet high and spans 3,302 feet in length, with a storage capacity of 131,000 acre-feet of water from the Row River. Serving multiple purposes such as flood risk reduction, hydroelectric power generation, irrigation, navigation, and recreation, Dorena Dam plays a crucial role in managing water resources in the area.

Despite its age, Dorena Dam has been deemed to have low risk by a routine assessment conducted in 2012, with no immediate modifications required. However, the US Army Corps of Engineers continues to monitor and assess the dam's condition through routine inspections and risk assessments, with the next assessment scheduled for spring 2022. The dam is equipped with monitoring instrumentation and emergency action plans in place to address any potential risks, and ongoing community outreach efforts aim to improve awareness of flood risks and the dam's role in mitigating them. Overall, Dorena Dam stands as a testament to effective water resource management and flood risk reduction in the Willamette Valley, ensuring the safety and well-being of downstream communities.