Located in Glenwood City, Wisconsin, Glen Hills 6 is a flood risk reduction dam designed by USDA NRCS and completed in 1975. With a height of 29.6 feet and a hydraulic height of 21 feet, this earth dam spans 635 feet and has a storage capacity of 191 acre-feet. Situated on a tributary to Tiffany Creek, this structure is regulated by the Wisconsin Department of Natural Resources and undergoes regular inspections to ensure its satisfactory condition.

Despite its high hazard potential, Glen Hills 6 is deemed to have a moderate risk level, with a satisfactory condition assessment as of February 2019. The dam has an uncontrolled spillway type and a maximum discharge capacity of 2095 cubic feet per second. While the dam does not have a designated emergency action plan, its last inspection in May 2020 revealed no major concerns, indicating a commitment to the safety and maintenance of this flood control structure. For water resource and climate enthusiasts, Glen Hills 6 serves as a noteworthy example of infrastructure designed to mitigate flooding in the St. Croix County area.