Mountain Lake in Somerset, Pennsylvania, is a privately owned reservoir regulated by the Pennsylvania Department of Environmental Protection. Built in 1956 for recreational purposes, this earth dam stands at a height of 22 feet and has a length of 545 feet, providing a storage capacity of 266 acre-feet. The lake covers an area of 18 acres and is fed by the West Branch Coxes Creek, with a drainage area of 0.8 square miles.

Despite its fair condition assessment and high hazard potential, Mountain Lake remains a popular destination for water resource and climate enthusiasts. With its picturesque surroundings and ample recreational opportunities, including fishing, boating, and wildlife observation, the lake attracts visitors seeking outdoor adventures in a tranquil setting. While the dam is regularly inspected by state authorities and meets regulatory standards, its high hazard potential underscores the importance of ongoing risk management and emergency preparedness to ensure the safety of both the dam and the surrounding community.