I am a geologist. I went to Rice University in the 70s and 80s, I taught geology for many years, worked for an oil company, etc. The evidence of a global catastrophic flood at the end of the last ice age is overwhelming.
1. We have discovered that a large meteor hit the Indian ocean about ten thousand years ago and this caused a huge tsunami which left behind a 1,000 foot Chevrons in Madagascar. We know when this happened because of the fossils in those chevrons were from the bottom of the ocean and give us an accurate account of the date.
2. That event would have kicked up an enormous amount of water vapor into the stratosphere. Generally speaking little or no water vapor ever makes it to the stratosphere. This would have circled the globe and then come back down as rain and can explain the 40 days and nights of rain.
3. We have archaeological accounts from 200 independent groups around the globe describing this great flood. In China the earliest word for boat is the combination of two words: eight souls. Why would anyone say that "eight souls" is a boat unless they are referring to Noah's ark.
4. There was a big extinction event that also took place with about 65% of large megafaunal species going extinct. They have tried to say that a disease wiped them out which is absurd. Most diseases are species specific or specific to a region of the earth. There is no evidence at all of some disease that would wipe out so many different species on six continents. The other absurd theory is that man hunted them all to extinction. When man hunted the buffalo we found evidence of buffalo in their camps and burial grounds. Buffalo skins, bones, etc. There is no evidence at all of humans hunting all these various animals to extinction. Also, we tried to kill all the buffalo to starve the Native Americans using repeater rifles and hiring people to do nothing but kill them and yet we were unable to make them go extinct. The idea that humans living as hunter gatherers with bow and arrow were intentionally hunting creatures on all six continents to extinction.
5. The flood that came down is well documented in India and also in the US. In the US we call it the Great Missoula flood. You can measure the depth of the water that flowed down out of the rockies to the Pacific by measuring the height of the "ripple marks" which are small hills. that showed that the depth was equivalent to the 40 cubits described in the Bible. The water came together and flowed through the Columbia gorge which is a thousand feet high. They say that at that time the water flowing through that gorge was equal to all the water flowing through all the rivers on earth today. So yes, this was a massive flood, and seeing at this came from that meteor that hit the Indian ocean it was also a global catastrophe.
6. Some argue that a flash flood would have rolled Noah's ark over. However, at this time, prior to the flood there was a lake at the bottom of what is now the black sea with a community living there. It was not connected to the ocean. This filled up like a bathtub. So if Noah was in that location it is very possible that this flood could have taken place without actually rolling his boat.
7. In Guns, Germs and Steel they point out that the reason the European culture spread around the world and was so prevailing was because of the animals. All large domesticated animals come from Mesopotamia, the only exception being the llama. Our horses were our "tanks" up until WW1, our oxen pulled our plows, cows, sheep, goats, and rams were all a major competitive advantage for Europeans proving wool, milk and food. Also the diseases that are in these herds, what we call "childhood diseases" are a defense mechanism. What is a minor disease to a child becomes deadly to an adult. This is why when Europeans landed in the new world most of the natives got sick and died. They had never been exposed to the herds and the diseases.
In those cartoon movies about the ice age they describe big ice dams collapsing. That is the "new theory" now that the evidence for this flood out of the Himalayas and Rockies is overwhelming. The problem is we are witnessing glaciated highlands melt and we have never seen that form "an ice dam". This is just further attempt by Scientists to deny the truth of Noah's ark.
BTW Noah's ark has been found. One interesting point in the Bible is that God instructed Noah to pitch it "within and without". That is weird. If you want the boat to float and be watertight you would pitch it without. You would generally not want to pitch it within as that would smell and be dirty. However, the advantage in pitching it within and without is if the boat is buried it will not rot and be left behind for archaeologists to find thousands of years later exposing all those who have lied about this and tried to hold down the truth in unrighteousness.