Atrahasis

The 18th century BCE  Akkadian Atra-Hasis epic, named after its human hero, contains both a creation story and a flood account, and is one of three surviving Babylonian flood stories. The oldest known copy of the epic of Atrahasis can be dated by colophon (scribal identification) to the reign of Hammurabi's great-grandson, Ammi-Saduqa (1646–1626 BCE), but various Old Babylonian fragments exist; it continued to be copied into the first millennium. The Atrahasis story also exists in a later fragmentary Assyrian version, the first one having been rediscovered in the library of Ashurbanipal, but because of the fragmentary condition of the tablets and ambiguous words, translations had been uncertain.
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[Mesopotamian] The hero of an Old Babylonian poem of the Deluge, dating from the first half of the second millennium BCE. The great flood of this poem is only the last of a number of disasters sent to destroy mankind. A late version was written down in the reign of Assurbanipal.