Noah's flood was a world wide cataclysmic event that drastically changed both the surface of the Earth and its internal structure. So where's the evidence? Literally everywhere.
Choosing Blindness
Circular Reasoning
If you choose to believe what unbelievers write and say about the Bible, because you don't want it to be true, you're just fooling yourself, or attempting to. You're using circular reasoning.
Evidence is Irrelevant
The physical world that we can see is evidence of its past. A fossil skull, for example, is proof that something happened at an earlier time. What we think it's evidence of is based on our point of view.