Stony Lake Dam, located in Sandyston Township, Sussex County, New Jersey, is a state-regulated structure primarily used for recreation purposes. Built in 1926, this masonry dam stands at a height of 16.5 feet and has a storage capacity of 131 acre-feet, providing a surface area of 18 acres for water-related activities. The dam, situated on Stony Brook, serves as a focal point for outdoor enthusiasts seeking to enjoy the scenic beauty of the surrounding area.

Despite its age, Stony Lake Dam is deemed to have a low hazard potential and is currently in fair condition, as assessed in 2005. The dam undergoes inspections every four years, with the last assessment conducted in July 2005. While no spillway type is specified, the structure is equipped to manage any potential risks effectively. Additionally, the dam is under the jurisdiction of the New Jersey Department of Environmental Protection (NJDEP), ensuring that it is subject to state permitting, inspection, and enforcement protocols to maintain its safety and functionality.

Congressional District 05, represented by Josh S. Gottheimer, plays a role in overseeing the regulatory aspects of Stony Lake Dam. As a vital water resource within the region, the dam contributes to the local ecosystem and provides recreational opportunities for residents and visitors alike. With its historical significance and continued relevance in the present day, Stony Lake Dam stands as a testament to the importance of responsible water resource management in the face of changing climate conditions.