Quote: Gilgamesh observes that Utnapishtim seems no different from himself, and asks him how he obtained his immortality. Utnapishtim explains that the gods decided to send a great flood. To save Utnapishtim the god Ea told him to build a boat. He gave him precise dimensions, and it was sealed with pitch and bitumen. His entire family went aboard together with his craftsmen and "all the animals of the field". A violent storm then arose which caused the terrified gods to retreat to the heavens. Ishtar lamented the wholesale destruction of humanity, and the other gods wept beside her. The storm lasted six days and nights, after which "all the human beings turned to clay". Utnapishtim weeps when he sees the destruction. His boat lodges on a mountain, and he releases a dove, a swallow, and a raven. When the raven fails to return, he opens the ark and frees its inhabitants. Utnapishtim offers a sacrifice to the gods, who smell the sweet savor and gather around. Ishtar vows that just as she will never forget the brilliant necklace that hangs around her neck, she will always remember this time. When Enlil arrives, angry that there are survivors, she condemns him for instigating the flood. Ea also castigates him for sending a disproportionate punishment. Enlil blesses Utnapishtim and his wife, and rewards them with eternal life. This account matches the flood story that concludes the Epic of Atrahasis
That's from the epic of Gilgamesh. Written at least 2600 BC. So it's not hard to see where the bible got it's Noah character from.