15 Then from his mouth the serpent spewed water like a river, to overtake the woman and sweep her away with the torrent.

Read Revelation 12:15 Using Other Translations

And the serpent cast out of his mouth water as a flood after the woman, that he might cause her to be carried away of the flood.
The serpent poured water like a river out of his mouth after the woman, to sweep her away with a flood.
Then the dragon tried to drown the woman with a flood of water that flowed from his mouth.