• Glowing sunset view from overlook - Photo by Jason Barnett Photography

    Big South Fork

    National River & Recreation Area KY,TN

Natural Features & Ecosystems

Cliffs of the Big South Fork River gorge tower above huge boulders in the river.
Cliffs tower above huge boulders littering the Big South Fork River.
Chuck Summers
 

The Big South Fork watershed lies within the Cumberland Plateau, which is in the southern portion of the Appalachian Plateaus structural province. The geology of the Big South Fork is characterized by parallel, horizontally-bedded sedimentary rock of Pennsylvanian and Mississippian age rock. The Pennsylvanian rocks are predominantly sandstone and shale, and include siltstone, conglomerate, and coal. The weathering processes on these rocks have produced an impressive array of formations, including arches, mesas, chimneys, cracks, and rockshelters. The underlying Mississippian age limestone contains oil and gas deposits which are found both within and outside the Big South Fork.

The stream topography of the area is characterized by a dendritic drainage pattern and narrow, v-shaped gorges. A focal point of the area is the Big South Fork River gorge with its many sheer bluffs at the gorge rim towering over wooded talus slopes. The river valleys of the area are dotted with huge boulders which have broken from the cliff faces. The park’s rivers and streams are characterized by stretches of fast, rugged whitewater and quiet pools.

Did You Know?

Black bear now live in and around Big South Fork.

In the mid-1990's black bear were released in Big South Fork National River and Recreation Area to study relocation techniques and to determine whether adequate habitat existed in the area. There are now an estimated 40 - 50 bear living in and around the park. More...