Blue Marsh Dam, located in Reading, Pennsylvania, was completed in 1977 by the US Army Corps of Engineers for the primary purpose of flood risk reduction. Standing at a structural height of 100 feet and with a hydraulic height of 94 feet, the dam plays a crucial role in protecting downstream communities such as Reading, Birdsboro, Pottstown, and Philadelphia from potential flooding events. With a storage capacity of 129,900 acre-feet and a drainage area of 175 square miles, the dam can handle a maximum discharge of 70,000 cubic feet per second.

Despite being classified as having a "Moderate" risk level, the US Army Corps of Engineers implements rigorous risk management measures to ensure the safety and stability of Blue Marsh Dam. Regular inspections, monitoring, and maintenance are conducted to identify any signs of deterioration or potential issues. Emergency repair materials are stocked nearby in case of dam seepage, and staff closely monitor weather forecasts to prepare for possible flood events. Additionally, the Corps collaborates with state and county emergency management officials to conduct emergency exercises and ensure a coordinated response in case of an emergency.

The risk assessment for Blue Marsh Dam is based on the potential for the reservoir level to rise high enough during intense rainfall events, potentially causing erosion that could lead to a breach and subsequent flooding downstream. By closely monitoring the dam's performance and implementing proactive measures, the US Army Corps of Engineers is dedicated to safeguarding the surrounding communities and ensuring the structural integrity of Blue Marsh Dam.