The Grunch Rapids is a stretch of rapids in Morgan County, Tennessee, in the Southwestern Appalachians region. It lies about 11.8 miles northeast of Fairfield Glade and roughly 46.1 miles west of Knoxville as the crow flies.
The Southwestern Appalachians are the Cumberland Plateau and its escarpments, a sandstone tableland covered in oak and mixed mesophytic forest and cut by deep gorges. Creeks pour off the plateau rim over sandstone caprock into gorges, creating many tall, dramatic falls.
Morgan County holds 7 recorded rapids, and several are close by. Jacks Rock Falls, 8 feet high, is about 1.2 miles away. Rock Garden Rapids, is about 1.6 miles away. Ohmigod Rapids, is about 1.8 miles away.
The Grunch Rapids is located at 36.1101° N, 84.7252° W. The listing is based on the USGS Geographic Names Information System, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The position was verified on aerial imagery. Details on trails, parking and access have not been documented for this rapid yet.