There is indication of global flood in the geological evidence. It's all in how you look at the evidence.
The global flood is supposed to have occurred ca. 2350 BC.
Evidence from that time period is not geological, it is archaeological and sedimentological, that is, in the soils not in the rocks.
This is an easy time period to examine. Archaeologists examine this time period day in and day out. I have done so for quite a few years in the western US.
There is no evidence for a global flood. There are nice local floods in eastern Washington (google 'channeled scablands'), but it is pretty well understood in terms of date, origin, and extent. If we can understand these floods, at the end of the glacial episode, some 10-12,000 years ago, just think how easy it would be for us to study a bigger flood only 4300 years ago.
Instead, what we see is cultural continuity across this time period. The soils are not discontinuous, as you would expect. The mtDNA of people before and after this date are limited to the five founding Native American haplogroups, with no sudden change to Middle Eastern (e.g., Noah's family) mtDNA. The fauna and flora also are continuous.
In summary, no evidence for a global flood in the areas in which I work.
"There is indication of global flood in the geological evidence. It's all in how you look at the evidence."
Adding a big boat with two of every single animal on the planet might be stretching the evidence. As would be making this flood happen in forty days, landing on top of a mountain while the waters receded, etc. Where did all that water go? What happened to the saltwater fish? What happened to the freshwater fish? Who was the dummy who left the unicorn outside? Sounds like we need a scientist to figure all of this out.
Dan Rather, are you posting here now?