Turtle Valley Phase III is a state-regulated dam located in Walworth, Wisconsin, along Sugar Creek. This Earth-type dam stands at a height of 12.5 feet with a maximum storage capacity of 319 acre-feet and a normal storage of 244 acre-feet. With a low hazard potential and a very high risk assessment rating, this dam is closely monitored by the Wisconsin Department of Natural Resources (WIDNR) through regular inspections and enforcement measures.

The dam features a controlled spillway and has a drainage area of 0.92 square miles, serving a significant purpose within the local water resource management system. Despite its age and unknown year of completion, Turtle Valley Phase III has not been rated for its current condition, emphasizing the need for ongoing risk management and emergency preparedness. With a designated emergency action plan (EAP) in place, the dam remains a critical structure for maintaining water levels and protecting downstream areas from potential flooding events.

Managed by the state and situated within the Chicago District of the US Army Corps of Engineers, Turtle Valley Phase III serves as a key component in the overall water infrastructure of the region. Its strategic location and design contribute to the efficient control of water flow, supporting both environmental conservation efforts and climate resilience initiatives. As water resource and climate enthusiasts continue to monitor and assess the dam's performance, its importance in ensuring water safety and security for the surrounding community remains paramount.