too much water - water surplus
A flood: too much water
Image Credit: trokilinochchi, 2008 http://commons.wikimedia.org/wiki/File:Cyclone_Nisha_victims_on_tractor.jpg
Too much water occurs due to extra ordinary rainfalls and storms, but also due to uncoordinated depletion of the natural vegetation and water retention areas (water sources). All measures to mitigate the effects of droughts also mitigate the risks of floods.