Claiborne, Lake, reservoir (9 sq mi/23.3 sq km), on border bet. Monroe and Clark cos., SW Ala., on Alabama R., 15 mi/24 km WNW of Monroeville; 31°37'N 87°33'W. Max. capacity 96,360 acre-ft. Extends N to Miller co. Formed by Claiborne Lock and Dam (100 ft/30 m), built (1969) by Army Corps of Engineers for navigation.