Flag created by CincyFlags for the neighborhood. 
Its symbolism, according to CincyFlags in [1]:
"Three building facades inspired by the Clifton Heights Business Association serve as a stand in for the three communities.
"A bright and central hill representing both the Bellevue and Fairview Inclines.

A small, blue stripe at the bottom of the flag symbolizes the route of the Miami &amp; Erie Canal."
Own work using: https://www.cincyflags.com/cuf
CincyFlags