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GLOSSARY Of TI~RJYlS flDDd. An DverflDw Df lands, nDt nDrmally cDvered by water, that are used Dr usable by man. flDDds havl3 tWD essential charactl3r- isticsl the inundatiDn Df land is temporary; and the land is adjacent tD and inundated by DverflDw frDm a river, stream, Dr Dcean, lake, Dr Dther bDdy Df standing water. NDrmally, a "flDDd" is cDnsidered as any tempDrary rise in streamflDw Dr stage, but not the pDnding of surface water, that results in significant adverse effects..in the vicinity. Adverse effects may include damages from overflDw Df land areas, tempDrary backwater effects in sewers and IDcal dJOainage channels, creatiDn Df unsanitary cDnditiDns or Dther unfavDrable situatiDns by depDsitiDn Df materials in stream channels dur:lng flDDd recessions, rise Df grDund water coincident with increased streamflDw, and Dther prDblems. flood Crest. The maximum stage Dr elevatiDn reached by the waters Df a flood at a given IDcation. FloDd Plain. The relatively flat area or IDw lands adjDining the channel Df a river, stream Dr watercourse, Dr Dcean, lake, or other bDdy Df standing water, which has been or may be cDvered by flDDdwater. flDDd PrDfile. A graph shDwing the relationship of water sur- face elevatiDn tD IDcatiDn, the latter generally expressed as distance abDve mouth fDr a stream of water flowinl] in an Dpen channel. It is generally drawn tD shDl" surface elevatiDn for the crest Df a specific flDDd, but may be prepared fDr conditiDns at a given time Dr stage. flood Staqe. The stage Dr elevation at which Dverflow/of the // natural banks Df a stream Dr bDdy of water begins in the reach or area in which the elevation is measured. 43