[Coyoteman]

The Flood was global; there have been many regional floods. These sham attempts to ‘reconcile’ science and religion don’t help.

Is this Black Sea event the one about 6,700 years ago?

If so, how is the evidence of this flood visible, when evidence for the supposed global flood about 4350 years ago is not?

[blam]

"Is this Black Sea event the one about 6,700 years ago?"

Ryan & Pittman , 7,600 years ago.

"For thousands of years, the legend of a great flood has endured in the biblical story of Noah and in such Middle Eastern myths as the epic of Gilgamesh. Few believed that such a catastrophic deluge had actually occurred. But now two distinguished geophysicists have discovered an event that changed history, a sensational flood 7,600 years ago in what is today the Black Sea."

[Publius6961]

If so, how is the evidence of this flood visible, when evidence for the supposed global flood about 4350 years ago is not?

That's easy.
If you are hung up on the 4350-year thing, the entire question is silly.

The age of the earth has increased by over 100% since "science" put a number to its formation. That never invalidated that the earth came into existence sometime in the past. The earth is not eternal, no one has suggested that.

Well, neither is the "scientific" (factual) age of the "flood" or "floods".
First things first.