Corps empties Old Hickory Lock for scheduled maintenance
Anthony Certeza, a lock and dam equipment mechanic assigned to the Cumberland River Operations Center in the U.S. Army Corps of Engineers Nashville District, inspects the lower gate July 27, 2015 at Old Hickory Lock in Old Hickory, Tenn. The lock is empty of water until Aug. 4, 2015 while maintenance crews inspect the lock chamber and perform scheduled maintenance. The lock is located on the Cumberland River at mile 216.2.