Detroit Dam, also known as Detroit Lake, is a gravity dam located on the North Santiam River in Oregon. Built in 1953 by the US Army Corps of Engineers, the primary purpose of the dam is flood risk reduction, although it also serves for hydroelectric power generation, irrigation, navigation, and recreation. With a height of 369 feet and a storage capacity of 455,000 acre-feet, Detroit Dam plays a crucial role in managing water resources in the region.

However, recent risk assessments have raised concerns about the dam's performance during extreme events, particularly earthquakes. A 2020 study highlighted the potential for increased shaking at the site, leading to higher risks associated with the spillway gates. To mitigate these risks, interim measures have been implemented, such as reducing the maximum reservoir level and evaluating the seismic performance of key components. USACE is committed to ongoing monitoring, inspection, and risk management to ensure the safety and effectiveness of Detroit Dam in reducing flood risks for downstream communities.

Despite the inherent risks posed by extreme events, USACE is confident in the structural integrity of the Willamette Valley dams, including Detroit Dam. While flooding remains a potential threat, the implementation of targeted risk reduction measures and the development of emergency action plans demonstrate a proactive approach to managing risks and enhancing community resilience in the face of natural disasters.