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<br />.Ou I ~ "0 C<\lJ5H<J pr lmar i I Y by i nCreil5!!d .,,~t,)~ d<.'pths ~nd v") lOCi tics. <br />Extent 01 floodin>) and wdter 5urfaceprofilcs for the strGams <br />studied are sho'''n on plates 2 throog1 14. 18 ...~rO'Jlh 23, 27, 28 and <br />30 ~~rough 32 ~ccompenying this reQo~t. <br />TooprofileswOrDCcvelcredusln<Jcro55,ectionstilken <br />from field 5!J~veys, and rou'lM~5S c::xll'icionts establ is~ed by field <br />investigation, rating curve dilta, a"d ~ig~ Wd~e~ cn'j~"ctA~lstic5 of <br />Sbllar basins. Consideration was ~ISQ given to t~c back..ater effects <br />of t~o various bridge openl rlgs ~n<l eu I verts wh iCh in $C<C'" caSeS toe <br />forceflowsoverroadS,'itr"et5ilndrailways. <br /> <br />GLOSSARY 0, TER~S <br /> <br />'I"" <br /> <br />An overf Ic', of l~ndS not norma I i 'I covered by wator and <br />tho.t are u5ed or U5"0 I e by m~n. ,foods h~ve t'.o essentia I character- <br />i sties: The I nundatlo~ of I~nd is tomporary; ~nd tho land is adj~cent <br />to a~d inundated by ovorflow from a river or 5tredm or ~n oee~n, lake <br />or other body of standing w~ter. <br />Norma Ily a "f lood" is considered a~ any tOr1porilry rlse <br />in streilM f io~ or stage, but not tile pondi ng of ~urfaco wator, that <br />re~ults in significant adverse effects in the viCinity. Adverse <br />effects m"y include d<3"'<3ges frcrn overf lo~' of land aroas, temporary <br />backwater effocts In SewerS dnd loeai ~rainage ChannelS, creation of <br />unsanitary conditions or other unfavorable sltuations by deposItion <br />of materials in strodm Channels d~ring flood recessions, rise of <br />ground water coincident with increasod streaM flo'~. and otller prob- <br />lems. <br /> <br />Flood Crest <br /> <br />The mdxiMum st~ge or elevation reach!!d by the waters of <br />a flood atil given location. <br /> <br />!'"loodPiilir. <br /> <br />The relatively flat ~r6J or low lands ~djolnlng t~e c~an- <br />nel of ~ river, stream or '~3ter coursOl or OCO<ln, lak<l, or other body <br />of ~Tancing water, wnicn n~s been or may be coverod by TlooJ~atcr. <br /> <br />Floml i'rofile <br />A grilpn showl~g tne rolatien~hip nf w~ter surface al~va- <br />'lIon to loco'll on, tile liltter gon",ra Ily exprcsscd as ~I stilnca abnve <br />mouth for ~ stre~'" of water f I <.>Wi ng I n an op..n c~~nnc I. It;5 <br />genera Ily dra~n to ShOw surfaca elev~tlon lor the crest 01 d 5~ec; I ic <br />flood. but =y oe prep"red for condithns d ~ 'lIver. ti",,, er 5t~~je. <br /> <br />':iil <br /> <br />59 <br />