Blue Marsh Dam - Dikes A and B in Berks County, Pennsylvania, is a federal-owned structure managed by the US Army Corps of Engineers for flood risk reduction along Plum Creek. Completed in 1977, the dam stands at 25 feet high and spans 600 feet, with a storage capacity of 129,900 acre-feet. While the primary purpose of the dam is flood risk reduction, it also serves recreation and water supply functions for the surrounding area.

The dam, constructed with stone core and rock foundations, has a high hazard potential and is subject to regular inspections and emergency action planning. USACE actively manages dam-related flood risks by monitoring its condition, prioritizing risk-reduction activities, and engaging with local emergency managers and the public to raise awareness and prepare for potential emergencies. The agency also updates the emergency action plan regularly and conducts maintenance and repairs as needed to ensure the dam's structural integrity.

Despite the risks associated with dam operations, USACE emphasizes the importance of community preparedness and cooperation in managing potential emergencies. By working closely with local authorities and continuously monitoring the dam's health, USACE aims to mitigate flood risks and ensure the safety of residents in the event of a dam-related incident.