inundation

syn. flooding 

(1) Overflowing by water of the normal confines of a stream or other body of water, or accumulation of water by drainage over areas which are not normally submerged.

(2) Controlled spreading of water for irrigation, etc.

 

Source:

UNESCO/WMO International Glossary of Hydrology (2nd revised ed., 1992)

Posted on February 20, 2014 .