Prado Dam, also known as Prado Reservoir, is a federally-owned earth dam located on the Santa Ana River in Riverside, California. Completed in 1941, the dam stands at 106 feet high and has a storage capacity of 295,581 acre-feet. Its primary purpose is flood risk reduction, with additional functions including recreation and water supply. The dam has a spillway width of 1000 feet and a hazard potential classified as high.

In a 2019 dam safety risk assessment, the US Army Corps of Engineers (USACE) identified concerns with the performance of the spillway and potential for flood waters to flow between the dam embankment and spillway during a major flood event, posing a risk of dam failure and flooding downstream cities. To mitigate this risk, USACE is currently studying and planning modifications to increase floodwater and sediment storage capacity. Regular inspections, monitoring, and maintenance are conducted to ensure the dam's structural integrity and to decrease risk as low as reasonably practical.

USACE works closely with state and local emergency managers, conducts emergency exercises, and engages with communities to enhance flood preparedness. By closely monitoring weather forecasts, inspecting the dam, and implementing risk management measures, USACE aims to ensure public safety and reduce the risk of dam failure at Prado Dam.