I don’t think the flood event was the same as the Younger Dryas Event. I think the flood came later. There are some ideas about Black Sea flooding that I found interesting.
:^) The Younger Dryas was about one or more large impacts, rather than (merely) about floods, it is interesting that the Atlantean Flood (dating more or less agrees; folklore-wise it probably only survives in Plato) is attributed to celestial bodies, and Plato goes on to attribute the Greek myth of Phaethon with the events.