Lake Susan Dam, also known as Lake Swan, is a privately owned earth dam in Chesterfield, South Carolina, with a primary purpose of recreation. Built in 1968 by the USDA NRCS, this dam stands at a height of 24 feet and spans 336 feet in length. It has a storage capacity of 121 acre-feet and covers a surface area of 8 acres. The dam is regulated by the SC DHEC and undergoes regular inspections to ensure its structural integrity.

Despite being classified as having a high hazard potential, Lake Susan Dam is currently assessed to be in fair condition, with a moderate risk level. The dam features an uncontrolled spillway and outlet gates, with the last inspection conducted in January 2019. While the dam meets regulatory guidelines, there is room for improvement in terms of emergency action preparedness and risk management measures. With its picturesque location along TR-REEDYS BRANCH, Lake Susan Dam serves as a vital water resource for the region and a popular recreational spot for visitors to enjoy.