Located in Washington, Pennsylvania, Robinson Fork (Pa-647) is a vital dam managed by local government authorities with oversight from the Pennsylvania Department of Environmental Protection. Constructed in 1977 by the USDA NRCS, this earth dam stands at a height of 95 feet and serves primarily for flood risk reduction. With a storage capacity of 6,500 acre-feet and a normal storage level of 279 acre-feet, Robinson Fork plays a crucial role in managing water resources in the region.

The dam's high hazard potential is mitigated by regular inspections, with the most recent one conducted in January 2021 and deemed the dam's condition as satisfactory. Despite the lack of spillways, the dam has a surface area of 33 acres and drains a watershed area of 22.4 square miles. With a focus on flood risk reduction and recreation, Robinson Fork serves as a key infrastructure for water management in West Finley Township.

Managed by the Natural Resources Conservation Service, Robinson Fork is a significant structure in the Huntington District that contributes to the overall water resource management in the area. The dam's design and construction reflect a commitment to ensuring public safety and environmental protection, enhancing the resilience of the region against potential water-related disasters.