We know the Biblical flood never occurred, because there were great civilizations thriving during that time. They kept good records, and neglected to mention they were all wiped from the face of the earth. The Chinese (Neolitic Dynasty), The Egyptians (Dynasties 4,5 & 6), Mesopotamians (Early Dynastic Period), Sumerians (Early Dynastics IIIa & IIIb), Peruvians (Norte Chico Civilization) and many more were all present. We find a continuous line of culture, construction, art and historical records that runs through the time Noah’s flood was supposed to have happened.
Good luck finding ANY ‘respectable’ God.