Spruce Run Reservoir, located in White Deer Township, Pennsylvania, is a vital water supply reservoir with a capacity of 1,860 acre-feet and a surface area of 64 acres. The reservoir was completed in 1957 and primarily serves as a source of water for the surrounding area. With a drainage area of 13.5 square miles, Spruce Run Reservoir plays a crucial role in providing water for various purposes, including domestic, agricultural, and industrial use.

This Earth dam structure stands at a height of 46 feet and spans a length of 4,900 feet, with a core type of Buttress. The reservoir underwent structural modifications in 2005 to ensure its continued functionality and safety. Despite being rated as having a high hazard potential, the dam is currently assessed to be in fair condition. Regular inspections are conducted, with the last inspection taking place in June 2020, to monitor the dam's integrity and address any maintenance needs promptly.

Managed by a private entity and regulated by the Pennsylvania Department of Environmental Protection, Spruce Run Reservoir is a critical water resource in Union County, Pennsylvania. Its strategic location and significant storage capacity make it an essential component of the region's water infrastructure, ensuring a reliable supply of water for the community while also contributing to the area's environmental sustainability efforts.