So many myths have this motif because there were a lot more floods back then. The people that experienced these floods back then didn’t have any science or any idea of why there were so many floods so they made sense of it through their gods and what they believed. This motif shows up in the Maori Creation where the god Tawhirimatea was angry and sent out all of these natural disasters such as hurricanes, tornados, and cyclones. The most common one by far is the flood in the Bible which would have wiped out all of the races but Noah saved them all. In the Mayan Creation, it talks about how their good created a flood to kill off the first human race he made because the people were heartless and dumb and the ones that survived turned into monkeys that we know of