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<br />Floo:JSt"ge <br />Flood ThestageorclevJtlonJtwhiChoverllowofthenaturJI <br /> <br />GLOSSARY OF TER~S <br /> <br />b"nKS 01 " strea~ or bOdy of wator bogins In t~e re~ch or area In <br />which the elevation Is meas~red. <br /> <br />An overf 10'" on I/lnds not normally covered by water ~nd <br />that are used or ...s~ble by man. Floods hi.lYe two essentia I chilr"cter- <br />Istics: The In...nd~tlon of land is tt>mporary; and the land Is adjacent <br />to and Inundatedbyoverflo...lrornariverorstreamor/lnocean, Illke <br />orotherbodyofst"ndlngwater. <br />Normally a "flood" Is considered as any tOOlporary rise <br />In stream flow or stage, but not the ponding of surf~ce water, that <br />results In signIficant adverse effects in the vicinity. Adverse <br />effects may Include damages from overflow of land areas, temporary <br />backwater effects In sewers and local draInage ch~nnels, creation <br />of unsanitary condltTons or other unfavorable situations by deposltTon <br />of materials In stream channels during flood recessIons, rIse of <br />groundwater coIncident wIth Increased stra~m flow, llnd other problems. <br /> <br />He'ldLoss <br /> <br />The effect 01 obstructions, such "s narrow bridge opqn- <br />I ngs or bui Idings thi.lt I iml t th<J area through '~hich W'lter must Ilow, <br />raising t...e "urtd~e of the water upstrea~ from the obstructlo.... <br /> <br />. <br /> <br />Flood Crest <br /> <br />Intermedl'lte RegIonal Flood <br />A flood having a 0...0 percent probabilIty or an i.lverage <br />Irequency 01 OCCurrenCO in the order of once In 100 years although <br />thefloodmayoccurinanyyei.lr. It Is based on sti.ltlstlclIl analyses <br />Of strei.lmflow rocordsavaili.lble lor toe watershed and analyses of <br />rilinlilll'lndrunoffclldri.lcterTstlcslnthe"gencral region of the <br />watershed." <br /> <br />Tho mal< imum sti.lgo or elevation reached by the water~ of <br />a flOOd at a given locatio.... <br /> <br />Left Bank <br /> <br />FloodPlaln <br /> <br />Tho t>ankno t"e ieft si<I""fa river, streamorwatp.r <br />cour~<l. looking doWnS~rCilm. <br /> <br />ThO rolatlvely flat drea or low iands adjoining the <br />chi.!nnel of a rlvor, straamorwi.!tercourseorocBllfl, lakB,orother <br /> <br />RightHdnk <br /> <br />~y of standing water, whIch has been or may be covered by flood- The bank on the right side of a river, stroam or water <br />water. cour~e, lookl ng <.!ownstrellm. <br /> <br />FloodProfilo <br /> <br />Stdnd'lrdProjectFloo<.L <br />The 1 lood ~hat m1lY bA expected from t'ho most severe <br />c~n~lndtlon of ~~teorologlcal and hydrological conditions thJt drc <br />con~idered reasonablv c"'i.!r"ctnrlstic of the geoqraphicIII arei.! in <br />which the drainage basin Is located, excluding extremely rare <br />coo",; nations. Peak oi~cni.lrges ;m' thes.. floods dre qem!r"d Ilv <br />'Ibout 40 rereent to 60 pe>r""nt of t~e rr"b,~ble \1,lx r...u," "100(15 for <br /> <br />A graph showIng the relationship of water surf~ce elevJ- <br />tlonto loc<:ltlon,tha latter gener(llly expressed as distance above <br />mouth tor 11 stre<lmof water flowing in an open channel. Itls <br />generally drawn to show surface elev~tion for the crest of a specific <br />flood, but may be propared tor conditions at a given tl...o or stage. <br /> <br />" <br /> <br />" <br /> <br />I <br />