Parameter Tree:
EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > FLOODS

Definition:
The condition that occurs when water overflows the natural or
artificial confines of a stream or other body of water, or accumulates by
drainage over low-lying areas. 


Reference:
Dictionary of Earth Science, 5th ed.. 1997. Sybil Parker, ed. in chief.
McGraw-Hill.