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<br />Lewi~ Wa~h flooJfiows would remain
<br />imm..diHtely >>djacent to the channel
<br />throuj(hoLllitsknj(th.Flo",linj(alongllorizon
<br />Drive eha"o,'1 wnllld ,~'Iosely parallel the
<br />.t,'eamwa"v, IRaon Crppk fl.-.-.-lw~wr would
<br />remain do'c It.l th{,..hannl'i\Jntil abo\Jt~.O()O
<br />fGCt north of LJ.S, llil("\lwaj' 6-GO where it
<br />would ,;pr~ad ea,;terly abollt :,(1I) r""t and
<br />continue ""utlwrl;: u"till~mrlinl( al!"aill~t the
<br />embn."km<,n~ of (;,8, Highway G.:,O and tho
<br />Denver and Rio Grande We.t,'rn Rs.ilroad,
<br />There woulrllw muchsheel flow flooding on
<br />both ,treams. Horizon Dr;ve Channel sheet
<br />flow wouldh..ginn"rthwcstofthcinwrsection
<br />0126 Road and F Ro"d.anJcontinllcweswrly
<br />adjacent l;) t. Road in a narrow band abo\Jt
<br />L:lI)O fcct. lonj(, About ,,00 ket west of the
<br />inwr>ection. sheet flow would fan out south of
<br />t' lwad f"raoollt&J()kdandextendt<J25-~
<br />Rom!, 0" l...'ach C...,k, two 'mall arcas of
<br />~h,'et flow would occur south,'ast of the
<br />intcr""dion of G and ~~ l{oad~. and the
<br />
<br />FLOOD DAMAGES
<br />
<br />The major fI"od loose~r<,sultinl(fromaIOO-
<br />or ,.,O()-y€ar flood wOllld compriS{' re"idelltial
<br />and commercial damaJ(" in Grnnd .Junetion
<br />and ~uburban a,'eas: u~ricultural dama>!,':
<br />and da"HW;~ to urid)<l'S, cuivert.', railro:t.d
<br />embankment, roads, and stre"ts, R,,:;idential
<br />\DilS'.'S wOllld i,,,,lu,l(, damaRe to foundalions,
<br />lower fl,.,r.. wall", [urni~hin>:s, appliancps,
<br />"-nd lawns "nd l:"rden" Commcrcial 100:;;;8
<br />would indurle "tructural and eqllipment
<br />rl"m"-~r.I()~sofinvent;-,ry, and \pOlrorary 10"8
<br />of bU8ine~s, AJ(ricult',md losses would eonsi~t
<br />"r 10>" of cn>p,;, ..rnoio". ami costs of
<br />rt'hahilil1ltinl( [ielJ, ,,',()vered with dpbri,aod
<br />,dl, :~tr""L" and road, "\Ibj,"'t W Inunciation
<br />
<br />intersection ofGal\d~4.\<,Roads, r'l""dwaters
<br />would spread out al;out l.;mti fe..t to the
<br />"O\JthWR,t from G and 24.\j; IWad, and extend
<br />wc~terly to 2~ Road where they would turn
<br />sollthalonl(thfea8t8ideof24 Rnadina
<br />fl<l'x1path about 500 feet w;do and 2,000 le;:l
<br />lon>r,:-<orthoIL''sHighwayii-50.floodwaters
<br />would "'tend westerly in a path about 2,1100
<br />k",t lonj(and 5fl(1 f(>(ltwide,
<br />The 10n.year flood wuuld inundat" abemt
<br />:J.700 acres, of which aoout 2,lloo acres a"e
<br />agricultural or open land~, 700 acre" are
<br />urbanizt"{l, 100 acres are ruraJ rosidential,
<br />and GOO acre" are streamway. The 50o.year
<br />floocJwould generally follow the 8ame pattern
<br />as the lOO'year flrxKi on the Colorado and
<br />Gunnioon Rivers and IA'wi, Wa,h, but would
<br />be somewhat wider ~nd Jcep<'r. Along u'ach
<br />Cr(.ck a!\d Horizon Drive Channel. large areas
<br />of ,he;:,t flow and pondinj( would occur at
<br />variow locations durinl!' a 500.year flood,
<br />
<br />could b..damaj(""a"" made im,ee''8lliblefo,'
<br />extende<l peri,~l" Rridl':es alld euh"'rt< rOllld
<br />h<' damaged or d,,'troy..d. Streamhanh.
<br />~hannel i~land".anda~;o.ultur"llandsw()uld
<br />oe subject to "flY'L"n. ~'I,"l.d fighting and
<br />r,'pair aod rf8tOtltti<>n costs would b" ext"n.
<br />S\"e.
<br />Dama...." would b(' l(rt'at<:r during a 5011-
<br />\'carlloodthar.durinO';"I(){J,yearf!oodd"eto
<br />;"wider flood phin,gr,'awrd"l'th"ffhKiinl!',
<br />and higher velocity (,[f!ow,
<br />The dcptb of flow in th.. variou~ channel;
<br />and :,djacent floodcd an'as (exdudinl!' Rh,~,t
<br />flow ar..as) ean be dNermined from th~ water
<br />,urfae,' profll,'" shown on Plate. ~1<-74,
<br />
<br />"
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