Ruen Pond, also known as H.Ruen, is a private water resource located in Fillmore, Minnesota. Managed by the USDA NRCS, this Earth-type dam was completed in 1970 for the primary purpose of flood risk reduction along the Duschee Creek. Standing at 29 feet tall and 315 feet long, Ruen Pond has a storage capacity of 32 acre-feet, with a normal storage level of 7 acre-feet.

The dam has a low hazard potential and is currently in fair condition, last inspected in June 2017. Despite being uncontrolled, the spillway type is considered uncontrolled, with a maximum discharge capacity of 238 cubic feet per second. While the risk assessment is moderate, the dam is regulated and inspected by the Minnesota Department of Natural Resources, with permitting, inspection, and enforcement measures in place to ensure its safety and compliance with state regulations. For water resource and climate enthusiasts, Ruen Pond serves as a fascinating example of private ownership and management of a vital flood risk reduction infrastructure in Minnesota's water landscape.