"The
Gilgamesh flood myth is a
flood myth in the
Epic of Gilgamesh. Many scholars believe that the flood myth was added to Tablet XI in the "standard version" of the Gilgamesh Epic by an editor who used the flood story from the
Epic of Atrahasis.
[1] A short reference to the flood myth is also present in the much older Sumerian Gilgamesh poems, from which the later Babylonian versions drew much of their inspiration and subject matter."
"
Gilgamesh's supposed historical reign is believed to have been approximately
2700 BC,
[2] shortly before the earliest known written stories. The discovery of artifacts associated with
Aga and
Enmebaragesi of
Kish, two other kings named in the stories, has lent credibility to the historical existence of Gilgamesh."
https://en.wikipedia.org/wiki/Gilgamesh_flood_myth
Is this the origin of the Biblical Flood Story?