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<br />Interstate Highwav 70 to Smith Road .. DcawiOJ;,s 23, 2/;, and 25 <br />-----_~_ ~L__~____.._..._"~--_ ~.______ _____ .....______ _.__...___________________ <br /> <br />The First Creek in this readl fr<>m S.,,,tton 1,1I2+60 to 1,240+70 is <br /> <br /> <br />well defined and appears to be fairly stablec Since the development in <br /> <br /> <br />this area is minimal it is not propos~~d to pro~Tide channelization for <br /> <br /> <br />this reach. Flood Plain Zoning :Ls re::omnelld(~d for the entire reach. <br /> <br />The Interstate Highway 70 at St.at.iorr J ,:~12+60 has sufficient capa- <br /> <br /> <br />city to adequately pass the 100-year [lood f.ows without overtopping the <br /> <br /> <br />bridge. Hence no changes in wate"f\vay is recommended. However J adequate <br /> <br /> <br />riprap protection should be providedc The Smith Road, also called the <br /> <br /> <br />Arapahoe Highway 81 crossing, wiLl be overtopped even for a 10-year <br /> <br /> <br />flood. No structural improvement5 are n~comlllencled for this crossI-ag. <br /> <br />The reach of First Creek upstream of Smith Road at Station 1,240+70 <br /> <br /> <br />is outside thE scope of this study. l{owl~vf'r, st.udi.es for this reach <br /> <br />were limited to hydrological studies tha~ have 3n impact on the re:;t of <br /> <br /> <br />the basin downstreamc <br /> <br />Tributary T Imp!:.'.'vem''.!'!~,--=_ Ilra_"i[jKs _27_-.!cll2:().':'llI1__:g <br /> <br />The reach of Tributary T studied extends from Station 0+00 to Sta- <br /> <br /> <br />tion 306+00. Tributary T is intersected by a number of roadways and <br /> <br /> <br />structures c These intersections include P j cadilly Hoad; East Branch of <br /> <br /> <br />the 3ighline Canal; Gun Club Road; unimproved road along the West line <br /> <br /> <br />of Sc19, T3S, R6SW, and 26th Avenuec WaterNays allowed for Tributary T <br /> <br /> <br />at t.lese crossings are not adequate to pass the lOO-~year flow. <br /> <br />No structural improvements ate recornme:1ded for any of the crossings <br /> <br /> <br />on Tributary T. The stream channel between its conflnence with First <br /> <br /> <br />Cree:{ and Picildilly Road is well defined: wide ~lnd deep enough to ade- <br /> <br /> <br />quat"ly handle the 100-year flood flo,,'c Upstream of Picadilly Road to <br /> <br /> <br />26th Avenue the channel is shallow ane: wide and has a steep gradient. <br /> <br />No channel improvements are recommendEd fa c any reacb of Tributa ry T, <br /> <br />Flood Plain Zoning is recommended fClr o:-he entire reach. <br /> <br />II 1- ](1 <br />