Timberchase Sub Dam, located in Darlington, South Carolina, was completed in 1995 and stands at a height of 25 feet with a length of 575 feet. The primary purpose of this earth dam is flood risk reduction, although it also serves for recreation and other purposes. With a maximum storage capacity of 54 acre-feet and normal storage of 25 acre-feet, the dam spans across the TR-SPRING BRANCH river or stream.

Despite its low hazard potential, Timberchase Sub Dam's condition assessment is rated as poor, with the last inspection in November 2017. The dam is state-regulated and inspected, with enforcement and permitting also under state jurisdiction. With a risk assessment rating of moderate, it is crucial for water resource and climate enthusiasts to monitor the condition of Timberchase Sub Dam to ensure its continued effectiveness in flood risk reduction and the protection of the surrounding area.