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GLOSSMY OF Tm~S Flood Profile A graph showing The relationship of water surface elevation to location, the I~tter gonaral iy expressed as distance above mouth for a stream of water f lowing in ~n open channel. It is general I y drawn to show ~",rfacc elevation for the crest 01 ,1 spc<: if Ie f lcod, but ~ay be prepared lor conditions at a given tiMe or s~age. El1Ickwater The resu I ting high '~dter surface in a gi~en stre<wn due fo J Qownstre~ ob5truction or high 5ta~s in an Infersecflng stream. Flood An overflow of lands not normally co~ered ~y water and that are used or usable ~y man. Floods have two e5sentl~1 characteri5tics: the 1m ndation of I and i5 t""porary; and the land is adjacent to ~nd inundated ~y overf low from a river, stream, ocean, lake, or other ~ody of standing water. Nanna I iy II "flood" is considered as any tW1porary rise in 5tre~mf low or stage, but not the pond ing of surface water, that reSIJ Its in significant ad~erse effects in the vicinity. Adverse effects ~y Include dam~ge~ from overflow of land areas, temporary backwater eff0Cts In sewers and local drainage channels, creation of unsanitary conditions or other unfavor~ble situations by deposition of materials instreamchanr'lelsdYrlngfloodrecessions,rlseotgrwnJwater coincident with increased stream flow, and other problems. Flood Shgo The shge or ellwation at whiCh overflow 01 the natural banks of a strea", or booy of water begIns in the roach or area In Which the elevation is measured. Hydroqraph A graph showing flow values against time at a gIven point, uSIJallymM5ured in cUbic feet per 5BCOnd. Tho area under the curve indicates total volume of flow. Flood Crest The max irnJm stage of ei ev"tion rMohro ~y tho w"ter~ of " flood at a gIven location. IntermL~i~te Regional Flood A flood h~ving an avera~o frc~oncy of occurrenCe In the order 0/ once in 100 ye~rs althouyh fhe flood may occur ;n any ye~r. It Is based on st,,~istic,,1 analyses of streamflow rer-ords available for the watershed and analyses of rainfali and ru.n,,1I rhM'noforlSfiCs i" Lou ~'ln"rdl n.'<]ion 0; the "dters"cJ. Left""nk The dre~s adjoining a river, stream, waterCC<Jrso, ocoan, lakEl, or other body of standing w~ter fh<lt hdve be"n or ""'y be cov..re<:l by f lO<':Jw~t..r. The bank on tho loft side of a ri~er, stream, or w,'ferCQ;Jrso, looking downstream. FloodPlain Rlqht B~nk The b<lnkon the right side of a river, lookIng downstream. strcam,orwaterco.Jrso , " "