The Black Sea event is the most likely source for the "global" flood story, but that event wasn't global. There's a lot of "creative storytelling" in this one.
The only evidence for a global flood is the Bible, and I'm sorry to have to tell you the creationist geologists who were looking for the proof gave up about 1830.
It has been a staple of creationists and Bible literalists since then, but nobody else takes it seriously. The evidence is simply not there.
200?
I know that's been proposed, but it doesn't make sense. You don't need an ark for a black sea event. You simply herd your flocks out of the way. You don't get a year long flood out of the black sea either
"The only evidence for a global flood is the Bible, and I'm sorry to have to tell you the creationist geologists who were looking for the proof gave up about 1830."
They didn't give up, the prominent Scriptural geologists died off and noone rose to take their place. But the long earth geologists as the following link shows, were influenced heavily by their world views.
Some of the ideas that propelled long age geologists to prominence over scriptural geologists have been disproven. The debate over rapid stratification, polystrat trees and other things has shifted through the years.
"History is confirming that the Scriptural geologists were right. Lyell’s uniformitarianism was the ruling dogma of geology for almost 150 years until the late 1970s, when ‘neocatastrophism’ began to emerge, and with it came reinterpretations of the geological record.23 Lyell’s way of interpreting the rocks simply does not fit the facts and evidence of catastrophism at a global level is becoming increasingly obvious, even to many evolutionists."
The origin of old-earth geology and its ramifications for life in the 21st century
Not exactly. It wasn't a staple of anything until Henry Morris wrote his "Genesis Flood" book in 1961. This was 7th-day Adventist apologetics at the time, and wasn't taken "seriously" by anyone else until maybe 20 years later.
I hope ol' Henry remembered his hydraulic engineering in the "afterlife"; it might be kinda, uhh, warm where is now, considering how many people he led away from Christianity.