The Babylonian tablets which contain the full story of the flood have been dated circa 650 BCE. However, portions of the story have been found on tablets from about 2000 BCE. A study of the language used in the tablets indicates that the story originated much earlier than 2000 BCE. 3Variations of the original story have been found translated into other ancient languages. 4
Many conservative Christians believe that the flood occurred in 2349 BCE, and that the account in Genesis was written by Moses in the 1450's BCE, shortly before his death. 5,8 Thus, the Babylonian text must be a corrupted version based on a Paganized adaptation of the true story in Genesis. Alternatively, it might be an independent attempt at describing the world-wide flood.
Liberal theologians, noting the different names used to refer to God, and the different writing styles throughout the Penaeuch (first 5 books of the Hebrew Scriptures), believe that Genesis was assembled over a 4 century interval, circa 950 to 540 BCE by authors from a variety of traditions. 6