It rises on the Highland Rim approximately 7 miles (11 km) south of Livingston, Tennessee in Overton County.

It initially flows roughly north, then turns largely west for the balance of its course.

After crossing into Jackson County, it begins a relatively steep descent, resulting in the namesake "roar" during periods of high flow.

A U.S. Army Corps of Engineers recreation area is at and around the actual confluence, which is very near the Jackson County seat of Gainesboro.

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