Pa-480, located in Jefferson Township, Pennsylvania, is a crucial structure designed by the USDA NRCS for flood risk reduction along the TR Harmon Creek. Completed in 1979, this earth dam stands at a height of 66 feet and spans 555 feet, providing a storage capacity of 419 acre-feet and a normal storage of 25 acre-feet. With a surface area of 3.6 acres and a drainage area of 1.09 square miles, Pa-480 plays a significant role in managing water resources and mitigating potential flooding in the region.

Managed by the Pennsylvania Department of Environmental Protection, Pa-480 is regulated, permitted, inspected, and enforced by state authorities to ensure its structural integrity and operational efficiency. With a high hazard potential but a satisfactory condition assessment, this dam is subject to regular inspections and emergency preparedness protocols to safeguard surrounding communities in case of unforeseen events. Despite its age, Pa-480 continues to serve as a vital infrastructure for water resource management and climate resilience in Washington County.

As a primary source of flood risk reduction in the area, Pa-480 not only contributes to the protection of local communities but also reflects the collaborative efforts between local government agencies and federal designers like the Natural Resources Conservation Service. With its crucial role in water resource management and climate adaptation, Pa-480 stands as a testament to the importance of sustainable infrastructure in addressing environmental challenges and safeguarding communities against the impacts of climate change.