The water of a flood.
A large and sudden rise and fall in the tide.
A large, sudden, and disastrous wave of water caused by a tremendous disturbance in the ocean; a tsunami. (See Usage notes below.)
A crest of ocean water resulting from tidal forces.
A sudden and powerful surge.
A large, sudden inundation of water from the storm surge, or waves of that surge; a sudden surge of river water.