Long Pine Run is a vital water supply dam located in Franklin Township, Adams County, Pennsylvania. Completed in 1970, this earth dam stands at a height of 112 feet and spans 840 feet in length, with a storage capacity of 7490 acre-feet. The dam serves as a critical resource for the surrounding community, with a normal storage capacity of 5430 acre-feet, covering a surface area of 150 acres and draining an area of 7.92 square miles.

Maintained and regulated by the Pennsylvania Department of Environmental Protection, Long Pine Run is classified as a high hazard potential dam with a fair condition assessment. The dam is regularly inspected, with the most recent inspection conducted in March 2021 to ensure its structural integrity and safety. While the dam has not undergone any modifications in recent years, it remains a key component of the water supply infrastructure in the region, providing essential resources for both domestic and agricultural purposes.

Water resource and climate enthusiasts will appreciate the significance of Long Pine Run in sustaining the local ecosystem and community. As a primary water supply source, this dam plays a crucial role in ensuring water availability and security for residents in Adams County. With its impressive storage capacity and strategic location along Birch Run, Long Pine Run stands as a testament to the importance of infrastructure management and regulatory oversight in safeguarding water resources for future generations.