Crystal Run Reservoir, located in Cass Township, Pennsylvania, is a vital water supply infrastructure managed by the local government. Built in 1898, this Earth dam stands at a height of 38 feet and has a storage capacity of 310 acre-feet, serving the primary purpose of water supply for the region. With a surface area of 18 acres and a drainage area of 5.1 square miles, the reservoir plays a crucial role in meeting the water needs of the community.

Managed by the Pennsylvania Department of Environmental Protection, the Crystal Run Reservoir is regulated and inspected to ensure its safety and functionality. Despite being classified as having a high hazard potential, the dam's condition is assessed as fair, with regular inspections conducted to monitor its integrity. The reservoir's Normal Storage capacity of 200 acre-feet and its strategic location make it a key asset in managing water resources and mitigating the impacts of climate change in the region.

As a significant water resource infrastructure in Schuylkill County, Crystal Run Reservoir not only provides essential water supply but also contributes to the overall water management efforts in Pennsylvania. With a rich history dating back to the late 19th century, this reservoir continues to play a vital role in ensuring water security for the local community. Regular inspections, emergency preparedness measures, and adherence to regulatory guidelines underscore the importance of this reservoir in sustainable water resource management for the future.