Poplar Lake Dam, located in Union, South Carolina, was completed in 1947 and serves primarily for recreational purposes. This earth dam stands at a height of 18 feet and spans a length of 700 feet, with a storage capacity of 49 acre-feet. The dam, situated on Meng Creek, is under state regulation by the South Carolina Department of Health and Environmental Control (DHEC), with routine inspections and enforcement in place to ensure its safety and compliance.

Despite being classified as having a significant hazard potential, Poplar Lake Dam is currently assessed to be in fair condition as of January 2020. The dam's emergency action plan (EAP) status, risk assessment, and inundation maps are not specified in the available data. Notably, the dam does not have associated locks or spillways, reflecting its primary function for recreation rather than flood control or water management. With its picturesque surroundings and essential role in providing leisure opportunities, Poplar Lake Dam stands as a testament to the harmonious coexistence of water resources and community enjoyment in the region.