My wife has been doing a ton of research on this and I too am interested in an expert opinion. More cultures and people having it in their lore seems to reinforce something like that happened at some point.
While there's more to be said, you'll be interested in this thread with responses from myself and /u/tiako.
Just to add a small bit into the linked answer:
In Maya mythology the gods created humanity several times, the idea came to the gods as a way to be honored.
They first create man out of mud, shortly after they are too weak and dematerialize. Then they create men out of wood and they are sturdy but lack mind and heart, unable to worship the gods. This is where a flood happens and wood men are wiped out.
The final men are created out of Corn, however they resemble gods too much and they decide to limit their senses and knowledge.
Hi, i don't know a single Indian tribe on the pacific northwest (specifically of Canada) that don't have a flood story. Because I'm from the Kwakwaka'wakw ive done most of my research on the Kwakwaka'wakw. Here is just one example
“Ḵulus is the crest of the ‘Ma’a̱mtagila “Those who come from ‘Matagila”. ‘Matagila “Flyer” the Ancestor of the tribe came down from heaven in the form of a Kulus. In time, ‘Matagila was sent a message that the Great Flood was going to come and cleanse the World. To prepare, ‘Matagila built himself a waterproof house and gathered his family inside to escape the disaster. The terrible flood covered the house completely, but ‘Matagila and his family were spared. After many days, ‘Matagila breaks a hole in the roof of his house and releases one of four birds that he had caught prior to the flood. The first three birds that were set free did not return, but the fourth, returned with a twig of green cedar, signifying that the flood had completely gone down and it was safe to come out. Eventually, ‘Matagila sends his sons to travel about and repopulate the world. When ‘Matagila believed his work was done, he transformed back into a Kulus and returned to his home in the heavens. His constructive, building spirit and helpfulness are respected and honoured in ceremonies practiced by the ‘Ma’a̱mtagila today” pulled from Umista.ca