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<br />o <br /> <br />i , <br />o <br /> <br />tj" <br /> <br />r: <br /> <br />~ OJ <br />I <br />, <br />I <br />:0 <br />I <br />jO <br /> <br />,'0 <br />I <br />:0 <br />I <br />jO <br />jO <br />10 <br /> <br />'0 <br />I <br />, <br />j <br />() <br /> <br />" <br />c. <br /> <br />(. <br /> <br />(', <br /> <br />(: <br /> <br />(i <br /> <br />lIYDROLCGY FOR CRAIG, COLORADO FLOOD HAZARD Hh):,',:A "",'1 :,', iilJ~ <br /> <br />1. Purpose - This report presents hydrologic data for use in t!", Craig, <br />Colorado Flood Hazard Information Study. Peak flows and hydl'ographs k,ve <br />been developed for the 10, SO, 100, 500 year and standard project floods <br />at the stream index points sho1.'1:1 on Chart 2. <br /> <br />2. Ea~in ~escriptjon - Craig is 10cClted in the northern portion of <br />Colorado approxir:;ately 140 air miles north'-,est of Denver. The YaJ:lpa <br />River a'nd Fortification Creek, a tributary of the Yampa Rive]~, are the <br />principal streams in the. ZTea. Cedar Eountzin Gulch,. Pine Ridge Gulch, <br />and several snaIl tributaries of Fortific:lti_on Creek also 113ve ;1n j':-:t~;1<:t <br />on the flood probl",os in Cl'aig. S tH',;ns ;1nd dr"dnage <lreaS are Gho'~'n on <br />Charts 1 and 2. <br /> <br />Elevations in the Y2!:lpa Rivf~r basin r.JnE;c froi":! 2bout 620i) ft::~ct at <br />Craig to over 12000 feet along the contine::t"l divide. l11e Fortification <br />Creek basin ran(i.es in cle'~.ation fro~a 2.bout: 62.00 fr~et to about 11.000 fc~t. <br />Rolling hills with nan'o'''' valleys along the strcrc-'s tYi,ify t'le <br />topogr2phy around Craig. The ffioent2inol.:.s portions of the lJ.J.s5.ns 2re <br />considerably steeper. Strp---."?...."1 slopes on Fortificatioa Creek rc:~l1ge [-rom <br />over 1000 feet per mile in the he2"c;",tcrs to "bout 10 feet per nile <br />Cl.t Craig. Str2~lJ. slopes on the y',-,:npa Riv~~r.. range from 5 feet p'-~r mile <br />at Craig to over 1200 feet .~f:T l:-Lilc :tn the h('2.d;,/3f.:crs. <br /> <br />Vegetation arou~d Craig COllSi~ts of gr?sses ~nd SaEeb~G~h. Portio::s <br />of the area are cultiv~ted to vario~s STain 2ud hay cr()ps. B~ush 310ng <br />with forests of aspen, pine, f1l.~ ;~~ld spruce e-;.-o",.} d.t the. hig1H~r c:lc:vaticr:s. <br /> <br />RJ.nching and agriculture ha.ve Lecn the prIncipal eco:10ixie 2.ctiviti.cs <br />in the ar-C2. Recently the develo?ij,cnt of coal deposits: in tr1C ~lrea <br />~ith associat2d po~er plant conSl=uction has had a substantial :rcpact on <br />the cconoC1Y. <br /> <br />1-later resource dcvclopElcnt ill the f>,:;:ea Js IjJ:litcd to s;D.3.11 :3 trC;J,u <br />diversions lOr irrigc.tion a.nd \.;~tcr sUiyply plus scvc[~l [;:~]ll reservoirs <br />constructed by the Colorado Divisioa of Wildlife 3nd Parks 2nd Outdoor <br />RecrcatiDn prif,1<~rily for recreation pnrpor;cs. These resC'rvo:trs are li:;tcd <br />In the folle,Ting LebulCltj on. <br /> <br />}~A~{E <br /> <br />STREAlo.I <br /> <br />DA <br />(sq. :011) <br /> <br />:\:f's. Cnrzlcity <br />CM') <br /> <br />Upper \-.'illa~ Creek Lake <br /> <br />HJllo''''' Creek -. <br />t:rf1J:Jtary to <br />Lester Cl'Ct~k --~ <br />trJ11utary to <br />IIUlew Cu'ck <br />EC;:1:t Ri'ler .- <br />t:rJhut;1ry to <br /> <br />38 <br /> <br />23000 <br /> <br />r:Jk R. <br /> <br />Lcct.,r Creek Reservoir <br /> <br />4 <br /> <br />)(,GO <br /> <br />Vpf,er Stilh..;atcr Rcs. <br /> <br />Gl0 <br /> <br />Y"r:p" :'t. 26 <br />