We would and could cite evidence to the contrary. We would and could cite the tested scientific conclusions suggesting this event did not and will not occur. Our response would be correct, if you look only at the data. Information is always more than data. Information is the complete story that comes when data combines with reality, experience, knowledge, and the mystery of events we call life.
Information defies logical analysis and that is the heart of our dilemma.
We want God to fit our understanding, but He doesn't. God gave us the biblical narrative to show who and what He is. One of God's highest priorities is to wrap His arms of love and grace around us so that we know who He really is, from the inside out. The flood is part of that narrative. Arguing the validity of the flood from scientific evidence misses the critical purpose and question of the story.