Wangen Pond, also known as Donald Buss Pond #2, is a private water resource located in Fillmore, Minnesota. Built in 1971 by the USDA NRCS, this earth dam stands at a height of 31 feet and serves primarily for flood risk reduction along the Root River-TR. With a storage capacity of 25.4 acre-feet and a surface area of 1 acre, this pond plays a crucial role in managing water levels and protecting the surrounding area from potential flooding events.

Managed and regulated by the Minnesota Department of Natural Resources, Wangen Pond boasts a low hazard potential and fair condition assessment. Despite its uncontrolled spillway and outlet gates, the pond's moderate risk assessment indicates a level of preparedness for potential emergencies. The dam's last inspection in June 2017 revealed a need for regular assessments every 8 years to ensure its continued functionality and safety. With its strategic location and purpose-driven design, Wangen Pond stands as a testament to responsible water resource management in the state of Minnesota.

Water resource and climate enthusiasts visiting Wangen Pond can appreciate its unique features, from the buttress core type to the uncontrolled spillway design. As part of the St. Paul District's portfolio of flood risk reduction structures, this private dam serves as a model for sustainable water infrastructure. With its historical completion in 1971 and ongoing state regulation, Wangen Pond stands ready to face the challenges of climate change and ensure the safety of the Whalan community.