The **Genesis flood narrative** is a Hebrew flood myth. God wants to undo some of his creation, and start over, with Noah's ark. The story can be found in Chapters 6 to 9 of the Book of Genesis, of the Old Testament. Most of the book of Genesis was propbably written arounf the 5th century BCE. According to scholars, it has two sources, a priestly source, and a non-priestly one. Some parts, including the flood story, may have been written as late as the 3rd century BCE. Many of the details are incosistent, and there are contradicions. As a whole, the story is consistent, though.

The story describes a global flood event. According to scientific sources, there was no such event. one of the hints for this is the global distribution of species. Species did not spread from one place, as the story would suggest. There is a branch of creationism that says that such a global flood occurred. Other people have interpreted the story to refer to a local flood event.

Research
--------

Academic scholars and researchers consider the story in its present form to be exaggerated and/or implausible. The story of the Deluge describes either a severe genetic bottleneck event or the origins of a founder effect among the descendants of the survivors. This would mean that the survivors are related. There is no evidence of such a severe genetic bottleneck at that period of time (~7000 years before the present day) either among humans or other animal species. If the flood narrative is derived from a more localized event and describes a founder effect among one population of humans, certain explanations such as the events described by the Black Sea deluge hypothesis may add to the historicity of the flood narrative.

Localized catastrophic floodings have left traces in the geological record: the Channeled Scablands in the southeastern areas of the state of Washington were formed by a series of catastrophic floods originating from the collapse of glacial dams of glacial lakes in the region. The last of these has been estimated to have occurred between 18,200 and 14,000 years ago.

Another geologic feature believed to have been formed by massive catastrophic flooding is the Tsangpo Gorge in Tibet. As with the Channeled Scablands of the state of Washington, breakthroughs of glacial ice dams probably unleashed massive and sudden torrents of water to form the gorge some time between 600 and 900 AD.

Some also relate the climate change phenomena associated with the Piora Oscillation, which triggered the collapse of the Uruk period, with the Biblical flood myth.

The current understanding of the prehistoric cataclysmic flooding from the Altai Mountains is that several glacial lake outburst floods from the Altai Mountains caused massive flooding along the Katun River (in the present-day Altai Republic) some time between 12000 BC and 9000 BC, as demonstrated by the fact that much of the gravel deposited along the Katun valley lacks a stratigraphic structure, instead showing characteristics of a deposition directly after suspension in a turbulent flow.

In 2020, archaeologists discovered evidence of a tsunami that destroyed middle Pre-Pottery Neolithic B coastal settlements in Tel Dor, Israel as it traveled between 3.5 to 1.5 km inland. The tsunami was approximately 16 m high. Recovery in the affected areas was slow but overall, it did not significantly affect the social development of the southern Levant. Whilst the tsunami is not identified with the Biblical flood, it is believed to contribute to the flood myths found in numerous cultures.