The U.S. Army Corps of Engineers’ Philadelphia District recognizes National Dam Safety Awareness Day on May 31, which commemorates the 1889 failure of the South Fork Dam in Johnstown, Pa. The event was the nation’s worst dam failure and resulted in more than 2000 deaths. The USACE Philadelphia District owns and operates five earthfill dams in eastern Pennsylvania, which have prevented approximately $415 million in flood damages since their construction