Flag created by CincyFlags for the neighborhood. 
Its symbolism, according to CincyFlags in [1]:
"A stylization of the structure at Boldface Park, this symbol reflects a shared community identity that can also be seen in local neighborhood signs.
Two dynamic, bold stripes represent Sedamsville’s location along the Ohio river.

Green for the many greenspaces and trees throughout the neighborhood."
Own work using: https://www.cincyflags.com/sedamsville-1
CincyFlags