T Ragan Dam, also known as Thomas Regan Dam, is a privately owned structure located in Spartanburg, South Carolina. Built in 1972 by the USDA NRCS, this earth dam stands at 27 feet high and spans 312 feet in length, with a storage capacity of 82 acre-feet. The dam's primary purpose is for recreation, offering a surface area of 6 acres for visitors to enjoy.

Managed by the SC DHEC, T Ragan Dam is regulated and inspected regularly to ensure its safety. With a high hazard potential and a fair condition assessment, the dam poses a moderate risk. Although it has uncontrolled spillways and outlet gates, efforts are made to mitigate any potential risks associated with the structure. Overall, T Ragan Dam serves as a vital resource for water management and recreational activities in the region, highlighting the importance of proper maintenance and oversight in safeguarding water resources and the environment.