We use ordinary Newtonian orbital mechanics to explore the possibility that near side lunar maria are giant impact basins left over from a catastrophic impact event that caused the present orbital configuration of the moon. We hypothesize that this collision was responsible for triggering the Noahic Flood. The results show that a collision of an asteroid swarm equivalent to a single ~80 km diameter rocky asteroid moving at parabolic velocity was sufficient to cause the present radial orbital oscillations of the moon, assuming that the orbit was originally circular.
