Crystal Lake Dam 3, located in Luzerne, Pennsylvania, is a privately owned Earth dam completed in 1888 for water supply purposes on Wapwallopen Creek. Standing at a height of 20.1 feet and with a length of 1325 feet, the dam provides a storage capacity of 9337 acre-feet, with a normal storage level of 7442 acre-feet. Despite its age, the dam is in satisfactory condition and has a high hazard potential according to the last inspection in August 2020.

The dam is regulated by the Pennsylvania Department of Environmental Protection, with state permitting, inspection, and enforcement in place. Situated in Bear Creek Township, the dam serves as a crucial water resource infrastructure contributing to the local water supply. With a drainage area of 2.5 square miles and a surface area of 494 acres, the dam plays a significant role in managing water resources in the region.

While Crystal Lake Dam 3 has a solid structural assessment and maintenance record, its high hazard potential underscores the importance of ongoing monitoring and risk management measures. With its historical significance and critical role in water supply, the dam serves as a focal point for water resource and climate enthusiasts interested in the intersection of infrastructure, regulation, and environmental stewardship.