20-foot Upper Adline Branch Falls is the upper of two waterfalls on Adline Branch, a tributary of the Chattooga River near Willis Knob. It lies off-trail, 0.4 mile above where Willis Knob Road (FR 157) crosses Adline Branch. 

To learn about more waterfalls in the Clayton area, see chapter 10 in Mark Ozboyd's "Waterfalls of Georgia" guidebook.