Coffeeville Lock and Dam, Navigation lock and gravity dam on Tombigbee River, Alabama.

Coffeeville Lock and Dam on the Tombigbee River in Choctaw County, Alabama, near the town of Coffeeville, consists of a lock chamber and concrete gravity dam sections. The lock enables vessels to pass between different water levels, and the dam helps manage river flow. The structure is operated by the US Army Corps of Engineers.

Construction started in 1956 under the name Jackson Lock and Dam, reaching operation in 1960 with final completion in 1965. The project was part of a broader effort to control river flow and improve navigation throughout the southeastern waterway system.

The lock is named after the nearby town of Coffeeville in Choctaw County, while the dam was first called Jackson Lock and Dam. The US Army Corps of Engineers runs the site on the Tombigbee River, where the lock chamber and dam hold a 9-foot (2.7 m) navigation depth for barges on the waterway.

The lock and dam lie on the Tombigbee River near Coffeeville in Choctaw County, Alabama, and are operated by the US Army Corps of Engineers. The structure sits beside Coffeeville Lake, about 19 km west of Silas. The surrounding land is flat to gently rolling, with the dam set in a valley; the nearest higher ground rises to roughly 43 m within 2 km.

The structure was first called Jackson Lock and Dam before taking the Coffeeville name. It sits on the Tombigbee River in Choctaw County, near the town of Coffeeville, and is run by the US Army Corps of Engineers. The lock was already working in 1960, five years before the whole project was finished in 1965.