Allison Reservoir in Fayette, Pennsylvania, is a private water resource regulated by the Pennsylvania Department of Environmental Protection. Built in 1917, this earth dam stands at a height of 45 feet and has a storage capacity of 180 acre-feet, primarily used for recreation purposes. The reservoir covers a surface area of 14 acres and is fed by TR Dunlap Creek, making it a picturesque destination for water and climate enthusiasts to explore.

Despite its fair condition assessment and high hazard potential, Allison Reservoir remains a popular spot for outdoor activities such as fishing, boating, and hiking. With a drainage area of 0.64 square miles, the reservoir offers a serene setting for visitors to enjoy nature and appreciate the importance of water resource management. The dam's inspection frequency of once per year ensures that safety measures are in place to prevent any potential risks, making it a valuable resource for both the local community and the environment as a whole.