Glen Hills 8, located in St. Croix, Wisconsin, is a vital flood risk reduction structure designed by the USDA NRCS and completed in 1974. This earth dam stands at a height of 30 feet with a hydraulic height of 16 feet, serving the primary purpose of flood risk reduction along with other functions such as debris control and recreation. With a storage capacity of 238 acre-feet and a drainage area of 2 square miles, Glen Hills 8 plays a crucial role in managing water resources in the area.

The dam, part of the Detroit District, has a significant hazard potential and undergoes inspections every 3 years to ensure its satisfactory condition. With a moderate risk assessment rating, the structure is regulated, permitted, inspected, and enforced by the Wisconsin Department of Natural Resources. Despite its age, Glen Hills 8 continues to meet safety guidelines and provides essential flood protection to the surrounding community. This earth dam stands as a testament to effective water resource management and climate resilience in the region.

As a key component in the watershed, Glen Hills 8 has a spillway type of uncontrolled and a maximum discharge of 65 cubic feet per second. It covers a surface area of 15 acres and has a normal storage capacity of 43 acre-feet. With Sean P. Duffy as the representative for the area, this dam serves as a crucial infrastructure for water management, highlighting the importance of sustainable practices in safeguarding communities from flooding and ensuring long-term water resource sustainability.