What river flows through 9 counties in states in the U.S. and is also a tributary to the Swannanoa River?
Swannanoa River: The Swannanoa River flows through the Swannanoa Valley of western North Carolina, and is a major tributary to the French Broad River. French Broad River:  The river flows through the counties of Transylvania, Buncombe, Henderson, and Madison in North Carolina, and Cocke, Jefferson, Sevier, and Knox in Tennessee, and drains large portions of the Pisgah National Forest and the Cherokee National Forest.
The Swannanoa River flows through the Swannanoa Valley of western North Carolina, and is a major tributary to the French Broad River