Johnson Lake Dam, located in Aiken, South Carolina, is a privately owned structure that serves multiple purposes, including recreation and other activities. Completed in 1958, this earth dam stands at a height of 15 feet and spans a length of 525 feet, with a storage capacity of 99 acre-feet. The dam is situated on Bradley Mill Branch and is regulated by the South Carolina Department of Health and Environmental Control (DHEC).

Despite being classified as having a low hazard potential, the dam's condition assessment was rated as poor during its last inspection in August 2017. The inspection frequency is set at every five years, highlighting the need for regular monitoring and maintenance to ensure the safety and integrity of the structure. With a history of modification and a designated emergency action plan, Johnson Lake Dam remains a vital component of water resource management in the area.

As an enthusiast of water resources and climate, the Johnson Lake Dam presents an intriguing case study in dam management and maintenance. Its history, design characteristics, and current condition offer valuable insights into the challenges and responsibilities associated with ensuring the safety and functionality of essential infrastructure in the face of changing environmental conditions.