Union Lake Dam, located in Millville, New Jersey, along the Maurice River, serves as a vital recreational resource for the community. Built in 1869, this earth dam stands at a height of 35 feet, with a length of 2000 feet, and a storage capacity of 20,100 acre-feet. The dam's primary purpose is for recreation, offering a surface area of 850 acres for boating, fishing, and other leisure activities.

Managed by the New Jersey Department of Environmental Protection (NJDEP), Union Lake Dam is state-regulated and undergoes regular inspections to ensure public safety. Despite its age, the dam is assessed to be in fair condition with a high hazard potential. This assessment prompts the implementation of risk management measures to safeguard the surrounding area in case of emergencies. With Congressman Jeff Van Drew representing the district, the dam plays a crucial role in water resource management and climate resilience efforts in the region.

As an integral part of the Cumberland County landscape, Union Lake Dam not only provides recreational opportunities but also serves as a key water management infrastructure. With its historical significance and ongoing maintenance efforts, the dam stands as a testament to the intersection of human development and environmental stewardship in the face of changing climate patterns. Moving forward, continued collaboration between state agencies, local stakeholders, and the community will be essential in ensuring the long-term sustainability and safety of Union Lake Dam for generations to come.