A view of the city of Pittsburgh at the confluence before sunrise March 24, 2022. The U.S. Army Corps of Engineers Pittsburgh District ensures safe navigation on the riverways in the region. The district's footprint covers 328 miles of navigable waterways, 23 navigational locks and dams, 16 reservoirs, and more than 80 local-flood damage-reduction projects across five states: Maryland, New York, Ohio, Pennsylvania and West Virginia. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)