J O Clark Dam, located in Edgefield, South Carolina, is a privately owned structure primarily used for irrigation purposes. Completed in 1988, this earth dam stands at a height of 28 feet and spans 575 feet in length, with a storage capacity of 90 acre-feet. Situated on the TR-FLAT ROCK BRANCH river or stream, the dam has a surface area of 6 acres and a normal storage level of 60.5 acre-feet.

Despite being classified as having a low hazard potential, the dam's condition assessment is marked as poor, with the last inspection conducted in July 2017. The risk assessment for J O Clark Dam is moderate, with a DSAC (Dam Safety Action Classification) of 3. While the dam lacks certain emergency preparedness measures such as an Emergency Action Plan (EAP) and inundation maps, it is regulated and inspected by the South Carolina Department of Health and Environmental Control (SC DHEC) to ensure compliance with state standards.

With its vital role in providing water for irrigation in the region, J O Clark Dam serves as a key infrastructure supporting agricultural activities. For water resource and climate enthusiasts, monitoring the condition and safety of dams like J O Clark Dam is essential to ensure their continued operation and protection of surrounding communities and ecosystems.