Lexington Old Mill Pond Dam, located in Lexington, South Carolina, is a historic structure completed in 1900 with a primary purpose of recreation. This private dam on TWELVEMILE CREEK stands at a height of 24 feet, with a length of 475 feet, and a storage capacity of 440 acre-feet. The dam, made primarily of earth and stone, covers a surface area of 29 acres and serves as a source of water supply in addition to its recreational function.

Despite its scenic beauty and recreational value, the dam presents a high hazard potential and has been assessed as unsatisfactory in condition. The last inspection in October 2016 raised concerns about safety, prompting a biennial inspection frequency. The dam's emergency action plan (EAP) status is unclear, indicating a need for updated risk assessment and management measures. With its location in a residential area, the dam's safety and maintenance are crucial for public safety and environmental protection.

For water resource and climate enthusiasts, Lexington Old Mill Pond Dam offers a fascinating study in historic dam engineering, recreational significance, and the challenges of maintaining aging infrastructure. With its proximity to TWELVEMILE CREEK and its role in water supply, the dam's condition and risk factors underscore the importance of regular inspections, emergency preparedness, and sustainable management practices to ensure the safety and integrity of this iconic structure for future generations.