The Elk River's headwaters end at which large stream of western North Carolina and East Tennessee?
Elk River (North Carolina–Tennessee) The Elk River is a large stream in the North Carolina High Country and East Tennessee. The headwaters begin from the Northwestern slopes of Peak Mountain in Avery County, North Carolina and end at the Watauga River in Carter County, Tennessee.
Blackwater River (West Virginia) The Blackwater River is a 34.3 mi river in the Allegheny Mountains of eastern West Virginia, USA. Via the Black Fork, it is a principal tributary of the Cheat River. Via the Cheat, the Monongahela and the Ohio rivers, it is part of the watershed of the Mississippi River and drains an area of 142 sqmi . It is a true blackwater stream, owing to spruce and hemlock trees in its watershed, the tannins of which impart a tea or amber color to its water.