Borg, also known as Lake Delavan, is a gravity dam situated in Walworth, Wisconsin, owned and regulated by the local government. Completed in 1935, this dam serves primarily for recreational purposes, with a maximum storage capacity of 21,000 acre-feet and a normal storage capacity of 12,400 acre-feet. The dam stands at a height of 12 feet and has a hydraulic height of 7 feet, with a structural height of 12 feet.

Located on TR Turtle Creek, Borg covers a surface area of 2,072 acres and has a drainage area of 36 square miles. With a maximum discharge of 970 cubic feet per second and a controlled spillway type, this dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Despite its age, Borg has not undergone recent modifications and has a very high risk assessment rating of 1.

It is crucial for water resource and climate enthusiasts to monitor and maintain the safety and integrity of Borg to ensure the protection of surrounding communities and ecosystems. Regular inspections, emergency preparedness plans, and risk management measures should be put in place to address the potential risks associated with this dam and mitigate any potential hazards that may arise in the future.