Jesson Park, also known as St. Charles Detention, is a local government-owned water resource structure located in Winona, Minnesota. Built in 1976 by USDA NRCS, this earth dam stands at a height of 25 feet and serves the primary purpose of flood risk reduction along the TRIB-SOUTH FORK WHITEWATER R. With a storage capacity of 34 acre-feet, it plays a crucial role in managing the water levels and protecting the surrounding area from potential flooding events.

The dam, with a length of 340 feet and a spillway width of 66 feet, is classified as having a significant hazard potential. Despite not being rated for its condition assessment, it is deemed to have a moderate risk level. Although no emergency action plan has been prepared or updated for Jesson Park, its presence and operation contribute to the overall risk management measures in place for the area. For water resource and climate enthusiasts, this structure serves as a key component in the local flood control infrastructure and highlights the importance of proactive mitigation strategies in safeguarding communities from water-related hazards.