Noahs flood was when God wanted t wipe out all the sinners in the land, so he told the one righteous men to build an ark, that man was Noah. The world was watered with a mist at this point so Noah had no idea what rain was, but he had to trust God and obey. Then he had to bring two of all the animals on to the ark after that God closed the door and it flooded the whole world.
