Well, before I can get into the nuts and bolts of the science, I have to explain my world view, despite Quad Dog's protests against that. You and Quad Dog are looking at the same sock that I'm looking at, but I've finally concluded that you guys are looking at it wrong side out.
Like you probably do, I used to believe that science was the paramount source of Truth. After all, experiments can be replicated or they can't. Science, I believed, is based on an ever-increasing amount of verified data, all of which has been checked, double-checked and cross-checked. To the extent that the Bible conflicts with science, then the Bible must give way.
However, I was a corporate litigator, and litigated many cases involving scientific issues. I hired prominent scientists as experts, and successfully cross-examined the other sides' prominent scientific experts. Over time, I grew less confident of the certitude of scientists and science. In every case I was involved, at least one group of prominent scientists, who swore under oath that their scientific interpretation of the facts was correct, was completely and absolutely wrong. How could that be?
And much of which we believe is settled science is not. Most people don't know, for example, that there is zero "science" supporting the science of fingerprints. Everything we think we know about the science of fingerprints is simply based on bald assertions by FBI and police "scientists" without any significant evidence to back up their assertions. Are there other "settled" parts of science that are also unfounded?
Later in my career, when I was more of a corporate executive than a practicing lawyer, I was the lead in an effort to start a major construction project on a tiny island that had been devastated in the 1800s by mining for potash (bird poop). All of the NIMBYs came out against us, and their case was based primarily on two things, one of which was a scientist's conclusion that there was a unique species of lizard on the island that was, by definition, endangered. I hired several other scientists in other related fields of biology to assist us, and they laughed at the first scientist and said she didn't know what she was talking about. I found out, through that process, that the identification of a new species is motivated in large part by career (that first scientist became the head of a major museum because of her finding) and politics (people use endangered species as a political weapon). My own scientist, who was not at all a Christian or creationist, even pointed out that the very idea of species was first developed by a Christian scientist and is antithetical to the Darwinian concept of all critters being an unbroken continuum from the original common ancestor. From a Darwinian point of view, any distinction of one species from another is purely arbitrary.
That is all to say that I came to realize that science, although a powerful tool, is not an indubitable means of finding truth. Science is done by humans, and all humans have biases and make mistakes. In relying upon that vast body of prior science, all we can hope is that there are not too many mistakes, accidental or intentional, in that body.
On the other hand, I came to realize that the Bible is trustworthy, completely so. It all starts with the historicity of Christ himself - his historical presence, his divinity, his death, and his resurrection. If that is true, then everything else is easy. If Christ is in fact the Son of God, and the accounts of his resurrection are true, then God is true, God by definition can do anything he wants, God is trustworthy, and the Bible as God's word is trustworthy. From a critical examination of the historical evidence, I came to the conclusion that everything the Bible says about Christ is true.
With all that as background, my position on science vs. the Bible reversed. If science is not trustworthy, but the Bible is, then when the two conflict, science must have missed something. And we see that proven true frequently. Science says that X in the Bible cannot be true, then more facts come out and skeptics say "nevermind", let's talk about a different apparent conflict.
But that doesn't mean that I ignore science or think that others should either. Science is an incredibly powerful tool, it just doesn't lead us to truth. It certainly cannot lead us to truth in any of the large questions, such as what the meaning of life is, whether this is all there is, or any other questions of philosophy. It also cannot answer any of the ultimate questions of science, such as how did life begin or how did the universe begin. But it can do many useful things for us, such as medicine and technology.
So the foundation in my belief in a literal Biblical flood is based not on a scientific foundation but on a Biblical foundation. However, there is plenty of science to show that the Biblical flood is not completely crazy or anti-science. In another post, I'll just list some of the scientific and other facts that come to mind that support a Biblical flood. Let me caveat, though, that I am not a geologist nor even a scientist, so I won't be able to defend any of the points to any depth. Furthermore, the list will by no means be complete.