Louis Simpson Dam, located in York, South Carolina, is a privately owned earth dam built in 1965 for recreational purposes along the TR-Neelys Creek. Standing at a height of 18 feet and spanning 4700 feet in length, the dam has a storage capacity of 59 acre-feet, with normal storage at 37 acre-feet. Despite its significant hazard potential, the dam's condition has been assessed as poor, with the last inspection taking place in February 2021.

Maintained by the South Carolina Department of Health and Environmental Control (SC DHEC), Louis Simpson Dam has state regulatory oversight, including permitting, inspection, and enforcement measures. The dam poses a risk of inundation, but no specific risk assessment or management measures have been reported. While lacking in critical structural details such as spillway type and maximum discharge, the dam plays a crucial role in providing recreational opportunities and water resource management in the area.

With its unique design features and historical significance, Louis Simpson Dam serves as a focal point for water resource and climate enthusiasts. As efforts to improve its condition and safety continue, the dam remains a vital part of the local landscape, offering both leisure activities and essential water storage capacity for the community.