inundation

noun3

1. •
   The act of inundating; an overflow; a flood; a rising and spreading of water over grounds.
2. •
   The state of being inundated; flooding.

   • Serious as was the flood damage in England, the bursting of some of the dykes on the coast of Holland resulted in an even more widespread and devastating inundation. — 1953
3. •
   (figurative) An overflowing or superfluous abundance; a flood; a great influx.

   • There is an inundation of tourists in summer, but in winter the town is almost deserted.