How many great flood legends have been found?

Numerous cultures around the world have their own flood legends, with estimates suggesting that there are over 500 distinct stories. These legends often share common themes of a great flood sent by deities to cleanse the earth, with notable examples including the Mesopotamian Epic of Gilgamesh, the Biblical account of Noah's Ark, and various Indigenous narratives. The prevalence of these stories across different societies suggests a shared human experience or historical event that has been mythologized over time.