Located in Derry Township, Dauphin County, Pennsylvania, Swatara Dam stands as a vital water supply structure with a primary purpose of ensuring a steady water source for the region. Built in 1935, this concrete dam spans 360 feet in length and reaches a height of 10 feet, holding a maximum storage capacity of 668.6 acre-feet and a normal storage capacity of 501.4 acre-feet. Situated on the Swatara Creek, the dam serves as a crucial infrastructure regulated by the Pennsylvania Department of Environmental Protection.

With a low hazard potential and a condition assessment that is currently not rated, Swatara Dam undergoes inspections every five years to ensure its structural integrity and operational efficiency. Even though there are no associated structures, the dam provides essential water supply services to the surrounding area, covering a drainage area of 521 square miles. Despite lacking specific spillway details or hazard management measures, Swatara Dam remains a key component of water resource management in the region, contributing to the sustainability and resilience of the local water supply system.