Wellner-Hageman is a dam located in Springfield, Minnesota, on Mound Creek. Built in 1993 by BARR ENG, this local government-owned structure stands at a height of 52 feet and spans 2200 feet in length. With a storage capacity of 227 acre-feet, the dam serves the primary purpose of flood control and water resource management in the region. It is regulated by the Minnesota Department of Natural Resources and undergoes regular inspections to ensure its satisfactory condition and low hazard potential.

The dam's spillway type is uncontrolled, with a maximum discharge capacity of 400 cubic feet per second. Its drainage area covers 13.1 square miles, providing essential protection to the surrounding community from potential flooding events. With a moderate risk assessment score of 3, Wellner-Hageman has appropriate risk management measures in place to address any potential issues. The dam's location in Brown County, Minnesota, and its critical role in water resource management make it a significant structure for climate and water resource enthusiasts to monitor and study.