No, only the Noachic flood explains the grand canyon, the state of florida, the immense sand deposit in the gulf of mexico, etc. The great flood is no myth, it is geologic fact that we see every day.
Something like trillions and trillions of gallons of water carved out the Grand Canyon, and very quickly.
A a flood of melting ice sheet from a comet impact would fit the bill...............
No not the Grand Canyon that is attributable to other things. The rest has some validity - there certainly were floods as sea level rose on average 450 feet worldwide, and in some places 750 feet, covering millions of square miles of once prime habitable land and river mouths.