Ruen Detention Group, located in Fillmore, Minnesota, is a privately owned structure designed by USDA NRCS to serve as a debris control dam along the Duschee Creek. Completed in 1966, this earth dam stands at a height of 29 feet and has a length of 1000 feet, with a storage capacity of 155 acre-feet and a drainage area of 2 square miles. The primary purpose of this dam is to control debris and prevent potential hazards, with the dam type classified as earth and the hazard potential assessed as low.

Managed by the Minnesota Department of Natural Resources, Ruen Detention Group is regulated, permitted, inspected, and enforced by state agencies, ensuring the dam's compliance with safety standards. The condition of the dam was last assessed as fair in 2017, with a moderate risk level assigned. While the dam has uncontrolled spillways and outlets, it meets the necessary guidelines for emergency action plans and risk management measures. Overall, Ruen Detention Group plays a crucial role in protecting the local community from potential flooding and debris risks, highlighting the importance of sustainable water resource management in the region.