Cumberland River Tennessee, where it is joined by the Obey River and Caney Fork. Northeast of Nashville, the river is dammed twice more, forming Cordell Hull Lake and Old Hickory Lake. After flowing through Nashville and picking up the Stones River, the river is dammed to form Cheatham Lake. The river turns northwest toward Clarksville, where it is joined by the Red River, and then flows back into Kentucky at the Land Between the Lakes National Recreation Area, a section of land nestled between Lake Barkley, which is fed by the Cumberland River, and Kentucky Lake. Finally, the river flows north and
Cumberland River and US Route 421 until a flood control project began in 1992 diverted it through a tunnel under Little Black Mountain from which it emerges in Baxter and converges with Martins Fork. Poor Fork begins as a small stream on Pine Mountain in Letcher County near Flat Gap, Virginia. It flows southwest in parallel with Pine Mountain until it merges with the other two forks in Baxter. From there, the wider, now named Cumberland River continues flowing west through the mountains of Kentucky before turning northward toward Cumberland Falls. The falls is one of the largest waterfalls in the southeastern