English: Aerial view of the G. V. Montgomery Lock and Dam on the Tennessee-Tombigbee Waterway. The lock is located in Itawamba County, Mississippi, USA. At this point the border between Itawamba County and Prentiss County crosses the waterway, and the dam (visible at top) is actually located in Prentiss County. The lock and dam are part of the Tennessee-Tombigbee project, constructed by the U.S. Army Corps of Engineers for barge navigation between the Tennessee River and the Gulf of Mexico. View is to the north.