I agree on a regional flood scenario. A global flood- NO.
40 days of rain would have melted all the ice in Greenland and Antarctica, but dated ice core borings going back several hundred thousand years disprove that idea. We also have lakes in arctic regions which have unbroken layers of seasonal spring thaw river sedimentation that can be dated back 10-15,000 years- just like the rings on a tree. I wrote a Christian who maintains a pro- Noah's flood website, has videos and does the talk circuit at churches why his website doesn't disprove these two arguements. I'm still waiting for his rebuttal letter.