Miller Foster Dam, also known as Johnsons Lake Dam, is a private-owned structure located in Spartanburg, South Carolina. Built in 1970 by the USDA NRCS, this earth dam stands at a height of 21 feet and stretches 1360 feet in length. Its primary purpose is for recreation, offering a serene environment for water resource and climate enthusiasts to enjoy.

Despite its low hazard potential, Miller Foster Dam is currently assessed as being in poor condition as of June 2017. The dam has a normal storage capacity of 114 acre-feet and a maximum storage capacity of 174 acre-feet, providing essential water resources for the area. The structure is state-regulated and regularly inspected by the South Carolina Department of Health and Environmental Control to ensure public safety.

While Miller Foster Dam may face maintenance challenges, it remains a valuable recreational asset in the region. Its association with Foster Creek adds to the natural beauty of the area, making it a popular destination for outdoor activities. With its moderate risk assessment and historical significance, this dam continues to play a vital role in water resource management and climate resilience efforts in Spartanburg, South Carolina.