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<br />R.ELATETl PLOOTl STIJ~IES
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<br />FL~r)~ '-lIS'!'ORY
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<br />Th~ '1o,rlso!'1-I(r.udsen C01lpar.y, Inc. cilrrled out a study to pro\ltd'"
<br />C'Ie"ro:l Shal", Oil Compa~y "11th" preU'fltnary lO0-w_ar Hood bou1ld"rv 'llal'
<br />"n Roar> Creek, It "'''S int~.nd"d "-s a lIllide for [)~8~q"e'~ el<Dansior, plans.
<br />The r~port i~ dated July 1981 titled .Cleilr Cr~~k Shale Oil Project
<br />The Corps of Engineers, Sacramento Dl~trfct, pllbliahed an Internal
<br />Official ~emorandu~ Report "Flood Insurance Stlldy 4ydfOlo~y, f.arfield and
<br />~esa Counti~~, Colorado" dated '1ov~"'ber 1975. This '"as a relatively broad
<br />~rudy that Included dralna!1e ,~r"a vs. cubic feet per sec<>nd per sqllare
<br />:nile ~r.vel<)l><'- cur"~s. The Cllr"eS "",r.. ir.t~_"ded for esti..atirlll l"'.ak
<br />dl~char!1es on str~arnS in Garfield and ~esa Co,,~ties, Colorado, ~pparently
<br />f"r flood Insllrance purpo8~s,
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<br />'lajor f1ood[n~ a.lon~ Para.chue~ Cr~~k a"d Ro.,r, Cr",'k i. cauad by
<br />rapld rneltlrlll of th~ 'llOunta.t1l anoWpar" durln~ bt'" '1av Co "arty j'-ilv as
<br />well as sum"",r rainstor1lls. There f. al.o th~ p"tential for f100dirlll as "
<br />r~.ult of rainfall orcurrin!1 0" me It inv, sn"". The sno""",l~ floods are
<br />characterized by "",,de.ra~" P<'aks, Iarlle volume., and 100" durat io"s. Tile
<br />summer floods haw characteristic8 of hillh pea,,", a.~d short flow
<br />durations,
<br />Th~ "".r r"'~~"t rl~",,,,,jn!1 fl",,~ otc"rr..d ""rinl'( th.. .."d of >1"y, l~R1
<br />"" Ro,~n Creek. It re8ulted from. the ~elti"!1 of art unusually deep
<br />sr!.o"",,,,"ck. The ~bove ,,"ver"!1e spriJ"..o; runoff cau.ed co"rern all alo!'1!1 tht"
<br />Colorado River, t,,~ludi~.g the lan~e GL.,r!. Canyon I}a". PiCople in ~he ana
<br />of Roan Cr",,,,k reported that ",ater started risir.!1 about 'lay Pi and re~aLr>ed
<br />stahi!1hata"leuntllJune6.
<br />"'bout 10 fandli",s ato"!1 the Cr~ek ,,~re aff"ct.,d. Irri~atlon "ystt'!'l's
<br />"",re w"shed out Ol"klrlll it impossibl.. for local rarld,ers to Lrri~at~.
<br />Approxi"'''tely 200 aCreS of irri~"r"d PMtClre ~nd h.~v1and "",re d~m.1~ed IO'lth
<br />debris, sedtn",nr, ac.1rrLn!1, and "fre"",!mnk erMLo". About 1/2 (If t~~
<br />totaL crop pI"odactton ir. the R.oar. Creek Dra[na,,~ '"as da~a>[~d, alon!1 ",it!'
<br />12 mites of rourH" road "~.d l brtd<:<,s. Total da'''''~,\S were esti:n3tc.d :It
<br />QVt'r 1 ",illloo1 dollar.. Str",a~a,,<," 001 "o"n Cr.,~<. "~r~ dlscontlnu~c III
<br />19J12 th~refor", rh~ pt'~k dbchar~e for this flood "'''"S root dH,'rml""d.
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