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<br />Rgc0'l'lE~I)ATIONS
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<br />GLO~S".'l.Y OP TE"'1S
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<br />T'te follD\oiln~ re("o'O..endadons are included for oor.sidcnion in rc~ucLn~
<br />
<br />pOci'r,d"t floon d"","~es.
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<br />Ch'lnnd - ." r.arur"l nr ,Hcifidal '~"t.tir cn,,"se "t percePtihle c~tent '..lth
<br />defir.i~~ h""ks '0 conftr:c ar.~ condl.lC~ mntL~\l()\lgIy 0:1' p<'rtodic~l'-v
<br />flowin\'( \ilaUf. Ch3r.nd no'.. Is [hat: \iln~n which is flo"trl<: "tt:lltn
<br />[he 11"i[s of [h~ d~ftned channel.
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<br />L
<br />
<br />Local '.lilit:s of ~ov<'rnm~n[ should 1'tlple"'f'n~ ~ floon plain 'llana~e",el\t:
<br />plan.
<br />Exisrlng res~rlctiorls [hat cont:r1but~ [0 o"~rbank Hood1n~ should he
<br />cort'ec~ed wh.efe poss1bl~ 1lnd lilhen possible,
<br />')"~ail.,d st:\ldles of gpedfic st:~uccural alt<,-rnsdve rneuures 911ch as
<br />floodways and dikes Co ~tdut:e flood1n..il sho~ld he cOtlSioored,
<br />(hmers and occupants of b~1ldlrtJ!s "",d orh,'[ o[opercy wichin or
<br />ad,1ace"t co rhe deUnC'llt:ed Hood b'HL'1dary should con91der flood
<br />
<br />flood aC " ~lv~n locarion.
<br />Flood ~req~ency - A. means of ex~~essil\~ [he probability of flood
<br />OCC\lr~enees as derermined fro", s[at:ls[ ieal analysis of represenrarivt
<br />str~,,-...fl,,<< or rainfall and t'UMff ",co~ds. T~", treqll"nCY of "
<br />nart:l~"lar ~ra~., or di..rhar~t tg llstl,~lly e~"~essed as Qccurrln~ o"c<'
<br />In" gpecified ml1.t>~r of Vt',HS. The 10-, 25-, ~()-, 10(}- and 'iorl-y~a~
<br />freq\l~ncy floods have ~n aVeraI':" f~equel\,V of QC~"rr~ll,e In tl", orde'r
<br />of on~~ in the nu:nber of yea~s a~ ir:tdiraced.
<br />l()-~ear Flood - 1\ flond h,win~ ;<1\ "ver,,>:~ freq""n,v of ()",lJr~ente of O:lC~
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<br />"
<br />
<br />,.
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<br />Flood _ '4a["~ fro:n a river, srr~a'1l, watef coursc, lak~ O~ o~he~ body of
<br />st:and1n~ <<at:"r, ~h...~ tc",poc,rUy ovedlo<<s "h~ bo~l\d"ri"5 w1~h1n
<br />whlch it is o~din,,~ily confined.
<br />
<br />,.
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<br />Flood Cr~s~ - Th., '!laxi"lu," sca~IC or e1,,"~ion r~a,,~~d bv the waters of a
<br />
<br />;.
<br />
<br />insu~"nce.
<br />Puhlic 1e.formAt:lo" and ~d\lc"cio!l. l'ro>(f3.n\s 0"" flood ha2,,~ds should be
<br />
<br />,.
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<br />"'a~e nv~lI.abl~ r.o rh.. public.
<br />'Mt:iv~ ,>"bitS< "TonI': ~h.. ",aft! channels ,hould .,.. "",i"tAined t:o
<br />p~..sef"~ ,hann.,! s[abUlty and p~<lv1de '~lldiife hab1[a~.
<br />
<br />In 10 y~"rs.
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<br />T' has a Hl o,>rcICnt ch,.nee of b<,i,,~ ..~u"tcd or
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<br />"Kct'eded in ""Y given y~...~.
<br />10r)-Y..a~ Flood _ ~ flood havin" an a".'~a>(,' freq\l"~ey of occ"rnnc.' of on(",'
<br />
<br />i:l 100 y~a~s.
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<br />I~ h.,~ .. 1 D~r",'n[ chann' of hc"lng eqn,'1d Dr
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<br />"
<br />
<br />,'~<'e~d..d iH ,"~V >(j",.>n ",'.ar.
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<br />Fl,,~~ Ya~"rd ~re"s - Are..s susc~D[tbh to ,t",-"j d..",~v".
<br />
<br />nO"" p~,,~ _ "th. hi~h,'~' ~::,";" "" jhC'>,H',<' ""t:.1\.~,'d d'lrim' " fl~'y1
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<br />eveor; a Iso f,'f..rr..d (() ,~s Ot'"'' <[,,>(c of peak discha~~~.
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<br />2.',
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