Lake Lynn Dam, also known as Cliffs Valley, is a private dam located in Greenville, South Carolina, with a primary purpose of recreation. Completed in 1945, this earth dam stands at a height of 43 feet and stretches 425 feet in length, creating a reservoir with a storage capacity of 106 acre-feet. The dam is situated on TR-Terry Creek and is regulated by the South Carolina Department of Health and Environmental Control (DHEC).

Despite being classified as having a high hazard potential, Lake Lynn Dam is currently in fair condition, with the last inspection conducted in July 2019. The dam poses a risk to the surrounding area in case of failure, and while an emergency action plan (EAP) has been prepared, it is unclear if it meets the necessary guidelines. With its beautiful surroundings and recreational opportunities, including a surface area of 12 acres for activities such as fishing and boating, Lake Lynn Dam serves as a vital water resource for the community while also highlighting the importance of proper maintenance and risk management for such structures in the face of climate change challenges.