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<br />,\ltl'''"gh tilis facil i ty i s upstream "f the stu<iy r<:"lch "', t ~I " The head,:aters an' locatec1 primarily 'm th" ",."stern ,;Llp'" ,f
<br />Arkansas River, i, i, assumed " have only e limited "ff;;ct '0 Evans P;;ak, " alevativns greater than 13,500 fe;;t. Evarts Gulch
<br />fIovd clevativns t, <he study areCl. The draintlge area above t,,., flows io , westerly dirl'ctl.'Jn " its c"nfluence ,dth <he Fast
<br />d.grn f, 24.9 squllre mil,'s, " 7.6 percent .,f th<! tvtel b'l.,in .,r F'Jrk Arkans<ls River Ilppr,);dmately ,)ne mile north .)f L""dville,
<br />the d'Jwnstrea~ stu<iy limit '" 'he Arkansa,) Piver. Cvlvradv.
<br />
<br />Ilw 141,000 8crp-feet l\dn Lllkes Peservvir spi 1 ],a'Y is l')C1lt..d
<br />appr.)ximately 9..9 milps d')wnl>tn'elr. 'j[ the study reach on [.Il];"
<br />Crt=<!k, Rnd will thereL,re have n.) effect on fl'Jod ~'lev"'ti.)ns in
<br />the study area. There 8re no vther existing 'lr authvrizec fl.~,~J
<br />contral structur~s within the study area.
<br />
<br />Strea!1' stat i.)ning for Evans Gu leh i.~ h",,,.rl in hU'lrlrf'ns of fp.'c
<br />ah<:lVe the Hig Evens R~'s<!rv.Jir embankment ,,'hich is alsv c'w
<br />downstream study limit. The watershe<i area nrAinec at the
<br />d'J''''nstrca", study limit is approximately 7.8 squaroe miles.
<br />Tributaries ...:ithin the watershed area include Lincoln Gulch and
<br />South Evans Gulch.
<br />
<br />:--1ajvr transmQuntain diversi'Jn structures in the IIrkansas River
<br />Rasin as a part .)f the ArkanSlls-Fryingpan Project (RL'ference 7)
<br />include the ChHrles Bvustead Tunnel and Hom..state Tunnel. These
<br />structures transfer wat<!r fr,)m the western slop" t.) Turquoise
<br />Lake.
<br />
<br />Table 1
<br />streams
<br />
<br />summarizes drainage areas
<br />under consideretian in this
<br />
<br />,It various
<br />rep(lrt.
<br />
<br />pvints
<br />
<br />al'Jne
<br />
<br />the
<br />
<br />The Hoosier Pass Tunnel, Columbine f)iteh, r.wing DItch, I-.lurt~
<br />Ditch and the Rush-lvonh(lt., conduit (Old Carltvn Tunnel) are nth",r
<br />transmount8in diversions intv the Arkansas River basin as part (li
<br />the Arkansas~Fryingpan Project.
<br />
<br />TABLE I - DRAINAGF AREAS
<br />
<br />Locati.)n
<br />
<br />IIreD. (sq. mi.)
<br />
<br />Arkansas Piver
<br />Arkansas River
<br />
<br />Downstream Limit
<br />Upstream tildt
<br />
<br />327.0
<br />303.0
<br />
<br />Lake Creek
<br />
<br />Lake
<br />LAkE'
<br />
<br />Creek
<br />Creek
<br />
<br />Downstream Limit
<br />Upstream. l.imit
<br />
<br />64.0
<br />55.4
<br />
<br />Lake Creek originates in the SawAtch Rang", at the c')nflu('nce of
<br />rn" north and South F,nks "f Lake Creek. 'fl.", helHJwat<!rs sre
<br />1,lcaterl in San Isabel Kation",l F(lrest at elevati(lns in e.XCc'''S vf
<br />13,500 feet. r.....ke Creek flows fr'J<a its origin 7.5 mUps t'l T":1n
<br />Lakes Reservvir and t!-wn to its confluence with the ArkAnsas
<br />River near B811town, Colvrado.
<br />
<br />Evans
<br />Evans
<br />
<br />Cul"h
<br />Gulch
<br />
<br />Downstrea", Li".i.t
<br />Upstream Lirdt
<br />
<br />7.8
<br />4.0
<br />
<br />B.
<br />
<br />Study Reach Description
<br />
<br />~he Arkllnsa.s-Fryingpan Prvject includes A m'lj,.,r fl,_,,,' rliv"'rsi,)o
<br />into the ,,'atersheG [r,,<fi the C"lvrado River Jl8sin thr<~l",h ",eo '1'";,,
<br />. 0
<br />LAkes Reserv.)ir and r.an<ll r.vmpllny Tunnel Numb..r 1. This
<br />diversion is located in the hL'adwat"r ..rea .)[ N.)rth Ll.lkt, Cr;;ek
<br />appr0><:ilOlltPly 4.5 miles upstre8m ,)f the study site. A USCS/State
<br />vf Cvlorado str<!8mgage (07084500) (In Lake Creek UpstrC8m vf T,,'in
<br />Lak...s Reserv"ir and locllted appr.)ximately J.O wiles downstream ,)f
<br />the nudy site has b{'en \1perativnal si.nce 1941. Str<!aro
<br />"tati.)ning fvr LakeCr.."k is base<l vn hundreds vi fe<.'t abovc this
<br />g"ge. Th~' downstream study limit of the Lah' Creek. rell"h .If this
<br />rep,1rt is lvcated IlppruxitNltely 14,500 f..,.t upstrealO "f
<br />str<!smga!(e (07084500). Tn.. wAtpr<:h..d 'l"''''' dnll,,;;'! P.t this p-.J!.r.~
<br />is apprvd,n:ately 55.4 square Iril<!s. Tlw main tributaries ,dt'lin
<br />this water,;hed area Ifre SQutl1 f(lrk Lake Cl-eek, "orth F.)rk La;';",
<br />(ret.k, La Ptl\ta Gulch, Echv Crl'ek, and Crystal Lake Creek_
<br />f.vans Gulch
<br />
<br />Arkansas River
<br />
<br />:'1,.0 ~t,-,Jj ,-",,,<Ct, ["c L\", A,.k<l,,~tl~ Riyer st"rts approximately 4.8
<br />miles ab.Jve Granite, Colorado, Ilnd includes th<.' railr,)ad junctl..]n
<br />'J[ Kvbe, Culotado. Within the study re<<eh, the str<!am flows to
<br />the svuth parallel ing t,u' (lenver and R.i,) Crtlnce 1.'estern Railr'~ad,
<br />United States High,,'ay N'J. 2/., nnd Bvx Creek. ~l1e land
<br />imnwdiately adjacent to the stre<<m is "en<!rally l.lndevel,'pl'rl, with
<br />tht' exce;:>tion vi .1 fe". isolated residences. Witl1in the study
<br />reuch the streambed consists .)f r.)undcd stvnes and boulders, And
<br />is bord<!r",d on the west by <In essentially flat overbank and .In
<br />the e8st by an alt€'ratin,', gentle/steep overbank. I)ne brid"c
<br />(L<lKe C,-,untv Rvao No.8) cr'Jsse" the Arkansas River in th{' study
<br />areR. Tl1€' .t(ltal study r"lIcn (In tl-w /I.rkans8s Rive). is 2.0 IT.iies_
<br />Vegetation in the study reaches of the ArkllnSHH River Bnd Evans
<br />Gulch eon~ists (If den~e wi 11'JW husnes and shvrt grasses al,)nf; th,>
<br />c h a nn,~ Is". i t h " va ria t i on ,) f "ve rg rt' e n 8 in h i g her e I e v R t i 'J n s .
<br />
<br />.Evans Culch <<,; !l. I.'at,-,rsh..<l [,)r
<br />,)rigl.natt's i n \oIe~t"rn I.ake C.\~lint.l.
<br />
<br />the
<br />',ig,h
<br />
<br />Parkville
<br />i,rl the San
<br />
<br />I.'ater
<br />IRal;,'1
<br />
<br />District
<br />F,)r€'~t .
<br />
<br />-5-
<br />
<br />-6-
<br />
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