Winding Creek Diversion, located in Marathon, Wisconsin, is a state-regulated earth dam completed in 1993 for recreational purposes. Standing at a height of 15 feet and spanning 3000 feet in length, this diversion on Winding Creek has a storage capacity of 117 acre-feet and covers a surface area of 7 acres. With a controlled spillway width of 155 feet, the dam is designed to manage the flow of water effectively while posing a low hazard potential and maintaining a fair condition assessment.

Despite being classified as low risk, the Winding Creek Diversion is closely monitored by the Wisconsin Department of Natural Resources (WIDNR) with regular inspections every 10 years. The dam's emergency action plan (EAP) was last revised in 2017, and although it meets guidelines, there are no inundation maps prepared for potential risk assessment. The overall risk assessment for the dam is very high, emphasizing the importance of continued monitoring and maintenance to ensure the safety and sustainability of this vital water resource for both the environment and recreational activities in the area.