Sun Mountain Lake, a private recreational water resource located in Smithfield Township, Pennsylvania, is regulated and inspected by the Pennsylvania Department of Environmental Protection. Completed in 1934, this stone dam stands at 12.5 feet high and spans 700 feet, with a storage capacity of 43 acre-feet and a surface area of 14.5 acres. The dam's primary purpose is for recreation, attracting water resource and climate enthusiasts to enjoy its serene surroundings and engage in various outdoor activities.

Despite being classified as a high hazard potential structure, Sun Mountain Lake is assessed to be in fair condition, with the last inspection conducted in December 2020. The dam has been modified in 2010 for hydraulic purposes, enhancing its safety and functionality. While emergency action plans and risk assessment details are currently unavailable, the dam's maintenance and regulatory oversight ensure the safety of its surrounding communities and the preservation of its natural beauty. With its picturesque setting and recreational opportunities, Sun Mountain Lake serves as a vital water resource for both locals and visitors seeking a harmonious connection with nature.