A lot of atheists still try to claim that the flood story is either a fairytale or and aggrandized version of some kind of an account of a flood which was less than global in scope. This evidence should dispel any such interpretation.

Books detailing geological evidence for one or more global floods include Immanuel Velikovsky's "Earth and Upheaval", E Warren Hunts "Environment of Violence", Ignatius Donnelly's "Ragnarok", Charles Ginenthal's book on the flood, and a number of others.