River, Kentucky and Tennessee, U.S. It rises in southeastern Kentucky and flows west, looping through northern Tennessee before returning north to join the Ohio River after a course of 687 mi (1,106 km).
It drops 92 ft (28 m) at Cumberland (or Great) Falls, the site of a state park. A series of lakes on the Cumberland were developed as part of the Tennessee Valley Authority system. Wolf Creek Dam (1952) created Lake Cumberland, which extends to the base of Cumberland Falls.