|
<br />DRAINAGE AREA
<br />
<br />Th.' Y'"''l''' Il;y,', ""'''''',-1,'' fI.,'s,,,v
<br />,It'',,,,,, inti ,,-;tud:, a""",i,ldmt<c",'uJlh,'
<br />('ntorad" I,i\'pt' 'w t,,~ '.;['''',,, Riv<-r, Its
<br />!1""dwnh'" ,h'ai~,.;:<, a..,'a i, ;""",d<'d In II",
<br />nkh,'"d ~1"lIn\Hin.< "0 \h ,,,,,,tho tl", I'",'k
<br />J"'''I<'''H' t.h"(""I, "n<\ ),,\' th..Whil" !h'f'"
<br />1'[,<1,,'''' tIn th,' '''LLlh"".! w,'st. 1'1:" [,,"im'il'''!
<br />'''''Ll;'.\'~h',- [,'ihuta,',,", "f Fc".tific<cli'H> (n.'"k
<br />,--". m l~W f-Jkl",,,d \lollnla:o' "o,.lh-
<br />n<l[';I"""".,.I,\' "I I."'"i!,:, Th. 11:.<,,, '" '";"nrl~<l
<br />by [':lkh""t1Crh'k""lh",.,,,t;b,\ e:lal,'r.
<br />Willow, FOLL"",ill', and 1':m)w,'ake ('N'l'b
<br />
<br />I,tn'"'",' 'h,,[ fI",,' nM"'''''!,\' fc"m 1'"I"",,,h
<br />,,,I,, \\'\,om,,:g-I on llw ,wrtn "",i n"rthw,.,t;
<br />~mll,;' C~liaJ' \1""[1(ain ,,:,d B,g- i;"kh '"''
<br />,nd,,',"-: t..iblLlfU'" tv Ih~ Y""'i''' RiHl') on ~n,'
<br />"'''l;"""',\,Pill"'Wdll",,,,d(:,'da,''lol!nt''ill
<br />r;'.,I"""" ,.i", "",.t)-,,-,,,,,,,:e,'I,\' "f C""ill ",,,I, in
<br />g":rlL'raL"",'bfl'.,,,,bll>.I'C','<la,,"l,,Uill:,ItI""
<br />,h",'a<\ ":ld IJY ",,,,dc-'prin;;:and Bi!,:I;"ldH"
<br />,,,,till' w,'<\"nrl no",illw-,t, !nl"rnmlir.nont,w
<br />u-]blj;"";' dr"i,,~w' HI'"", "I UI<' _,"'E'"'''' "n.i
<br />'.i'a!<"'c,""",W undH,I'-,d,\' ;",1-:<""-',, in 'j'~bl..:!.
<br />
<br />~"t']y .1,,10, "nowf,,!I;f] (,-aill i" not c>xlrl'[Jlc'iy
<br />h"V\' with ,,'It:lj,,I'othl, ""'"~I[1g- F..,,,,, :\:1 t(.
<br />~~ 11ldLl'~ I;",,,,,,,,: ['",,, tn~:: '-'n'llr' ,',\,<":' :h,'
<br />"'-'"1'1''' llll"'r fl~"i" ""d """w-niH 1.\'1'"
<br />d"",,)'''r',1 ':"""1', Fn''l''''lltl,I' "",-,:.. i'l
<br />""nt'"",
<br />
<br />\','g','I"li,," III \h,. YarllJ~ iti,'v,. li~<Fl
<br />"~"i,',, ""('i,rrlH'~' to d'.'"ati",,_ ,1,,,..'1 ,d :h,'
<br />,,,:1<-,1' ""c'" i, .1"\'''1.." ~) P",,!r;,.tiO:l "f 'lay,
<br />
<br />NATURE OF FLOOD PROBLEMS
<br />
<br />Appro.lmale
<br />Drainage Area
<br />("1. m;,)
<br />:!,1:1O'
<br />~:):!
<br />
<br />A, nowd pa,.:i,.,', m.H ,,( Ih,' "nnual
<br />pre,-ipitation to the Y<C"'I'"- RiH'r l-\a~i[1
<br />""curs ,,,,,,,,,,'and adl'ep>;[1owp"tk'\l'curlLU-
<br />tat", ;n hig-h l'!.-v~t'on ar~a" C,'m'",,] ,."in-
<br />,torm, ~u"'-'ring- brl<" ar~'" (0,. ext(',,,Io'd
<br />p....'iorl< ~,\" ",'rur owr tt'ibut"ry d,'aim,g-"
<br />",.~",; fro", l:it..'pt'lng-\l:ruu;:hl'~rlyf:dI.Md
<br />~"m'wti,,(' tYI'" doudbur,t ;1<)fm, ~a" IX'
<br />('xl"-dt'd fl't''lll,'ntly d,,['ing- th~;llm'n"r
<br />Major F!,"~lin;: in l)". Cr"il( ar"" h", I....,,,
<br />11", ,",,,,,It or ,.apidl;' rndtinl< ;n<)'...., 'orn~li!llh
<br />"ug-ment,'d l>,' g-"nl'ra! r"in, d"ri"e:-:h~p'-riod
<br />f,.,>tn ~-lardt lhmu~h .lll'Lt', 0[' prc,,'ipi(>iu.-rI b,'
<br />1<'" j",n:, ;n latl' wint~r "r carll' ,prinl<
<br />e:''')I\'1n,'ltf1.~"Jio!,:i,('har:\t'kri"c~! bym,)(!,'r-
<br />at.- p""k fio"", I"r!':l' volumt'of"u'H)If.!"n!':
<br />(I',lr<llion, and ",~,'k,,1 dit"'[1al fbten,,,t,,,,, uf
<br />finw_ '\-laj"" fl,,"ling- from ""n~,'~1 ..,-,:n a!,mc'
<br />i, 'lOt kno"fl 10 ",n--,' '~"'lL:'r"d in Ihl' ('raill
<br />ar,'a, but tllt're I,. no """"ulI j",'ondll"'" thai
<br />",'ry br~t' rh'!_",'''"lting- fro", g-,-""r,,] ,'ain
<br />"c,' nol I~,,~ihi,' in th~ 1""'tp" 11,,,,,r Ha"in,
<br />Fl,..iLn"F"''''Lv'''''','nl"''Ln,'ehc.r'wl...ri<pd
<br />b;c nil''' Iwni< fiowo< a"d '''''<It'rat<' (\"l'~l\O" ot
<br />Iltx.lIlows I'loodin" f,',,,,, "un"",'ti\'<' tn"'
<br /><'!"',Ldhur'\ 'ton,,, j, ,'ha"at't~riZt,d hy hil<h
<br />I"'ak flnw,. "Ilon d",'~I.i"n of fl",,'. a",! ,mall
<br />
<br />TABLE 2
<br />
<br />TRIBUTARY DRAINAGE AREAS
<br />
<br />Stfeamor
<br />Watercourse
<br />
<br />Location
<br />
<br />Y",,'I'" Riv,'r
<br />F,j,.tij'i~ati'm
<br />(:r,,,~
<br />
<br />1I;""r.\li!,'I_I\
<br />At moulh
<br />
<br />Hmtlwrt""
<br />(;"Id,
<br />
<br />l\tnt""lh
<br />
<br />['in" I:i,j~'"
<br />l:"kh
<br />
<br /><'tau.' ]jig-I",,,,- n,',S~)
<br />
<br />,',.dal' ~10L"H""1
<br />(:,,1,'"
<br />
<br />At "'ol11h
<br />
<br />1""'"1"1""""""""""'"""1",,,:,,,,,
<br />
<br />Ma.imum Elevalion
<br />Of Watershed
<br />(ft.. :'\GVlll
<br />
<br />12,:;liiJ
<br />\1),~1I11
<br />
<br />,
<br />
<br />7,G1M
<br />
<br />Iii
<br />
<br />\1-':'
<br />
<br />"
<br />
<br />7,:;""
<br />
<br />C-lin:aknf t.lw Craig' "1'<'" i, c'la,,,,fi..d.,>,
<br />Ilivh!""d t'''nlinl'\ll.~: ami i"cb",,('a'l'i,.,~i b;
<br />:n" ))t'e-t'ipil:iti"n, ]",.~,- d"i!\' l<'m)l'-""tu..~
<br />"an1",Io-,\ h"mi<lLly. rn"I'"."t "i"d and
<br />abntldalLl ,,,%hi]\('. 1'lw 1'....'.aiil"l<dir<"<.',"",
<br />o'""i""\ov""lt'nlldth,,rt'p:iolli,fromtlw'.\','o<\'
<br />(It I al',.ival. ~,,' lll'''''-'' froll> tlw W(."t ",','
<br />t"o"'I",,."til't'iy(;n-,lLLl'l"!ung-l\'avdc'H'\'lalLJ
<br />",,<! I"" of mo;'tI"'(, ""l'" mULlntain ""'we"
<br />
<br />!, c'.':c'\,,'r, ~c.,' ;: r: ",,,r:.. ool:r','C-:-'. o( ,,'" i,;~,;",: ,,:"<'
<br />tl\<, !',,,,ifil' (it','a" a"d th,- i;,lif "f 1>1<.'x,,-"<>
<br />I:"'",ndlj, "It- "'~"'" fl'um :h,' l',,,,ilil' ikl':<n
<br />d'.',wm.l<- frvl1lIln"I".,. lh('oue:-h '\I"-tl ,,-hil..
<br />",,',"a',,-., f,'u,,' th"';"IF,,1 \lc'.,il'od"mimt!t-
<br />'!lH'i~1l lal" '1"'lng ":"111"'", 'f"",p",':>I""., '"
<br />
<br />",mllll','inl'ra;!,:"nrymild,lhE"""'onlhivh
<br />I",ire\.-: 1110-' TU"I",r~WI't' nt:"i""",,, "ho\,c
<br />!IG' 'H:ellr i~fr('qu.'ntly, T;,,, k,\\'"" "),;"""c'd
<br />t",";!<.,-"tun' L1l C,.,.ig- W,,, -_\,," ''I .bnua",1
<br />I ~"i;\.
<br />!-'o"JHal,,,,""alp....,-ip;tali.,""'''.,..,\\','h
<br />,.:,.""(ic,,, and ",,,,~,,., r"'>tt\ "1,,,,,, i \ i",'!".'., <ll
<br />(,',,,g- ~) ,~(I ,,,dw,' It';;li,''''wl at hi~'lt l,I(,I':<
<br />:i,,,,, in \ll(' !'ar~ lla"Il", \'1<\,( of tllp ,,,,,,,,al
<br />1",,-,-i;>",,:i;))1 i" c.i.o:h c~(".-".:;on an-"" flee":"', ,.,',
<br />'DC>" fl'lltl1 jt",'~ml~:!-t~, .-\["';1 :!rLJ, I.~'g-Lll""'"
<br />;" (Idul,,-,-, " d,:,'p "lLlwpm'k al'Cljmu!alh_
<br />""<'.''''/,di in hi~h a~,',," "''',I' ~o'.",1 a, mndt ",
<br />:,OF"-I<lur:n"lh,.\\'j"tl',-,S"oll'I1",ltl"'!:,,,,,,",
<br />!al",\),til:",,j,',,,,:i,-,,,,"\I<'llinl\,,ln""<H"
<br />
<br />FLOOD HISTORY
<br />
<br />[li,t"1'i,.,,1 1',.1,"\'''''''' 1":I,,~L',,n I'-,\t'\,r",~-
<br />~,j)" ('r",-.{ ,'xl(>nd i!al'k 1" 1,~7q, [~ that ;"""._ a
<br /><1\"",,' fi,""l i",mdathlth,' "\lIi,'~ ,,,.,,,, "'h,'",,
<br />"'al~" now h,,'afr'd..-\ mio..,. fI''''!''''''ll.-,-"d
<br />;n IS% :lnd tit<, fi,',: \l\aj<'t' flll,xi 'It"'t' tlo"
<br />["\I',, w,,, "'I~h!i'",,'d 'X'('I;['r..,! in ;\I".i! I~t'~
<br />,\"..i,'"I:nral:t","',l\o>'.I' "rLrlnfl h,'", 1,I",a,,,1
<br />",'"d..n":o\ P""I~".ti,'" "ll"t "j' Fprlifi(':tl"'"
<br />('''''ck "",""'''''\",,,,,!.I' da[[)a~,-,l. 1.'1",<1([(1\\,.,.,,,1
<br />
<br />"
<br />
<br />""ei \h~ """\'0' ""I<"I'\\L<>n h>\, b'~'n dra'lic-all,
<br />n>,lifi'.-rl, [[1 ,-all.::: ',"'l'a, ',,,-1,>',\ "'''"I f,~,t "ql
<br />IJ:-H' r"" a"'-"';.,itlir<', \,,,",,',,,ti,,~:" "I""ifi('d~,
<br />,\J""lb:";l jl''''''rt _"h.."tJ: lh:,1 is. 'Hg-~b.~,h,
<br />ml,""'m:sh, ""d '.\';,,~,'rf"l '1';111 aL ,,,,,i,_'1'-
<br />'In!',\" ,,: \-ario", har'!," i("a,,"';_ "~b'''l'in''
<br />I-'".."t 1'''1'''''. i",jI":I~,l,' I'i,,~, !","~;n_' "",I
<br />"t"-,-"'Ii,', <lnn!':")!]'-""'''_I"..''',.'I'"':''"d,
<br />f";,,, "I"",t ~,"J" F",., \0 :i"""',-ii,,,'_
<br />
<br />\'nl,m", of "1'''''1'- ]l'""all,,,e!uudi>LJr_,(,t,,,.m'
<br />lIl',- ""all :n ",..'",1 ,'XI~n: and ,l"".t ,r.
<br />dur"li..". till'.\' d" "ot ('nn,titul~ a fl,,,xl th""~1
<br />"'l S~"(''''l'' n, larjl;" <C' :h.. Yam,'" Ri\'('r,
<br />
<br />I<-,'j"rn, ",,",t1tu\,' a,il<[1ifieMtdrh,.],
<br />I",,,hl,'m, par(ieulari.l' alonp: Forti(i"miu"
<br />Ce,'!'k when' hi,torioaily. "'e jam" al thO'
<br />h]I<I1\\'",\, and railro"d bridl'~' h"",' oalj;c'd
<br />,ul"'lant;a! [1,",,1 d:lt1,al<e. ]!"wp\,pr. '""""nd
<br />improvetl\~nt \I-'"rk, lu"W'!y ""eompliohc~! on
<br />~~ Cllw..g-c'ne" ha,i,;n \~.I:I, and ;m]1rm'~~ll'nl
<br />,;[ th,' ;",]dl<'" '\1>p,'a:' W have r"d"""d th~
<br />"<""w.['",,",,..fin-jall\,,,t(h"."h,,,,ti,,ns.1L'"in
<br />(11,' Y<cm~<c R:Hrand [h,'anabranch eh",,,,,,,!
<br />I!m: ,'a'Ti,'" ]<'o!'\ifi,'ation C,.eek fi<l'.\" 1" l!W
<br />nmir_'ll'm,'at> al'''"""atc.t1'''!N:,t1iti"o,i,,
<br />C..ai)!"_ A "p,-,~i>>! ,,"nifil''''\t.,. "(ic,, j<c"" "
<br />tblth.-t"(,ati'",,ofll,,'i"""t'U['Ft'[1l'<'and:h,'ir
<br />Impa"" a,'" ;nd"h>,.mi"at~, ;.101 lInl\' i, it
<br />i"'I",",ih!,' l<J i'f1'dLd whn,- all ie,. j,Z", will
<br />,><:,em', :\1,. <c".:a that "",,1<1 1;., ~ff~~u..1 b."
<br />"H~flo"l- ,,~d th,' n-_'"lt'''ll depth "f 11,"~!ini(
<br />~r" >>1", Pill"""_ ~'!."" ,h"t w.mld <>Ih~n..;i'e lw
<br />,-,,,n-(L"Il'W;lIgeu,,ld, it ,,,,,",iat..-d With"" i,-~
<br />;'''''. flm.1 a,'."" "rdil1uily "Qn,id,',,~cl Ilrx~!
<br />fr'.'.',
<br />
<br />,,,.,,' ,'h""",,], 1:"""",11 ,-id-, a"ril'".tund i~"d,
<br />,,,,,,,,I,,,',,(,[,,I\hl'\,,\\'!,-I,,..i~'al,,,,,dikh__',,,,,1
<br />'"',,d P::l[(-' ',"""" "'",h-d ",,1. "'-'w" ""',I""
<br />II,,, I l'""nt, ( \ ~lll.l. 11. 1 I. \ >;. I ~, :; 1. a \ld I ~ 1
<br />arid fil'" :c'" damag-i"l1 fl".! "\'l'\ll' I \~~I:;, 'II:,
<br />~:;, :;:1, ""d ~." haw' '~"''''',',"I ,," ['W'tifi,'a:io~
<br />. '"".,', ""'.n- the tll,",' of II", t'C'[1(ur,I', e:ix fl..~1
<br />"I'<-"\> II~lJ L I., :!n,:!l. ,li, ""d ~\'I on'\L"r<'d
<br />,,:'110.' Y""'i'" !ii"",. d",'i",,'lh,,' I""',,,d ('If
<br />
|