Which Mesopotamian epic includes a flood story featuring Utnapishtim?

The Epic of Gilgamesh includes the flood story featuring Utnapishtim.

In the epic’s flood episode, Utnapishtim recounts how the god Ea warned him to build a boat before a catastrophic flood. The narrative includes a divine warning, preservation of people and animals, and the testing of whether the waters had receded.

The Epic of Gilgamesh is an ancient Mesopotamian literary work assembled from earlier Sumerian and Akkadian traditions. Its best-known surviving form is written in Akkadian cuneiform on clay tablets, including the famous Standard Babylonian version associated with the library of Ashurbanipal.

The flood account is often compared with Genesis, but the two texts differ in theology, characters, measurements, and plot details. The shared motifs reflect the wider flood-story tradition of the ancient Near East rather than making the characters interchangeable.