The U.S. Army Corps of Engineers, Buffalo District, observes efforts in the Erie Canal to kill off the invasive hydrilla plant, North Tonawanda, New York, Aug. 13, 2024. Hydrilla, which is not native to the United States, can grow several feet tall and cause hazards to navigation in the Erie Canal, including binding up the propellers of boats, as well as forcing out native aquatic plants. (U.S. Army photo by Ryan Campbell)