has_part has part has_participant has participant water body liquid water planetary landmass flooding A general and temporary condition of partial or complete inundation of normally dry land areas from the overflow of inland and/or tidal waters, and/or the unusual and rapid accumulation or runoff of surface waters from any source. A great flow along a watercourse or a flow causing inundation of lands not normally covered by water. hydrological process material accumulation process material transport process