The issue of the Flood is a difficult one because it is hard to absolutely prove it or disprove it. I believe it is part of the river disgorged by Satan to try to down the anointed, who are represented as a woman with the wings of an eagle in Revelation. If Satan's propaganda wasn't compelling it would offer little threat. Thus she is only saved by her absolute faith in the Bible. The Bible represented by the earth, is what swallows up the river of propaganda.
So in practice, many Christians simply dismiss a lot of pseudo-science when it contrdicts the Bible. Otherwise, some of these things we can't proove or that seem to be truly contradictatory to the Bible from a scientific point of view as presented by science, often not understanding scripture, would tend to drown out our faith in the Bible.
But even so, there are details that those who do believe the Bible understand that make it easier to accept even something like a global flood, that not understood by those challenging it. For instance, two things:
1. THE WATER CANOPY: The water canopy per the Bible was "firm" or solid, suggesting it was solid ice. Thus it encased the earth like a glass case. This eliminates all those arguments about the earth's temperature and the pressure that would be created if a massive amount of water was being help up by the atmosphere. If it were solid, then the barometric pressure could be easily adjusted to its normal state. Therefore, I'm out of hte loop of those arguments that imagine the canopy was liquid. I don't have to contradict that scientific obsrervation.
2. WHERE DID ALL THE WATER GO? The Bible says, to assist the dissipation "winds" were involved. Well I don't limit those winds. We know that winds include tornadic formations. A tornador over water is called a "water spout" which could have been used to funnel the excess waters into outer space. And we know there is water in the solar system because comets are surrounded in ice. So that theory works and explains were the excessive waters went if they were able to cover over the tops of the highest mountains. So that's another argument I don't have to deal with that some use to help confirm their disbelief in a global flood.
Now there are still other issues, obviously, but still, if you believe the water canopy was solid instead of liquid and that tornadic water spouts were used to funnel excessive water into outer space, the flood is more believable.
Of course, some of the arguments are biased. Some think, for instance, that if there was a global flood there would be clear evidence of massive erosion seen. But at that time there likely were no real deserts with most of the earthly very heavily vegetated. So the massive erosions would likely have been minimal during the dissipation phase, though, the grand canyon could be explained as massive erosion during a global flood.
So there is only so close we can get to an absolute dismissal or acceptance of this reality that the Bible presents. Those of faith just take the Bible's word for it, and without necessarily rejecting the "interpretations" of scientists as far as they understanding something they don't know more specifically about, those questions can likely be answered on Judgment Day. So we just don't worry about it, put faith in the Bible, and the flood propaganda doesn't drown us, but is swallowed up.
Subjectively, I looked into evolution and a what's out there now as far as the age of the earth and what not. I was reading about the ice cores and how they were dated, etc. Then just in passing they said that underneath all those layers of ice in Antartica was evidence of lush, tropical vegetation! I just laughed!! That proved to me there must have been a water canopy in place over the entire earth for tropical vegetation to exist at one time in the earliest life of the South Pole. So scientists will come to their conclusiosn and use their instruments that they will revise every year, change their theories or what not, but we likely won't get to the bottom of confirming the flood, which is difficult to believe, but not if you know Antartica was once a tropical place!
So I'm basically done with Satanically fooled scientists. I'm glad I can believe the Bible and accept what it says and that faith has paid off as we approach the final stages leading up to Armgeddon. It's nice not to be distracted by Satan's propaganda, but also to have a little practical application for what the Bible says as well. I think I'm capable of blind faith, but once you really look into a lot of history and archaeology you find they are propagandists also, who manipulate and hide information because they are also anti-Biblicalists. As a result, the more I research and learn academically, the more I can relate it to the Bible's historical accounts. Otherwise, you are just left with one side of the argument, which usually is geared to be quite compelling.