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<br />I <br />. <br /> <br /> <br />I <br /> <br />- <br /> <br />, <br />,< <br /> <br />. <br /> <br />~ , <br />.~ <br />, <br />I <br />" <br /> <br /> <br /> I <br />, <br />. <br />. <br /> , <br /> I " <br />0 8 <br />, <br />e <br />~ > <br /> . <br />" , <br />, <br />. , <br />. <br />" " <br /> . <br /> ! <br />, " <br /> , <br /> . <br />> . <br />. . <br />. 0 <br />< " <br />. <br />,- . <br />z . <br />. > <br />, <br />. , <br />, , <br />~ <br /> " <br />, . <br />. . <br /> " <br />" u <br />~ e <br />" 8 <br />u <br /> u <br />e <br />8 <br /> <br />" <br /> <br /> <br /> <br /> <br />Oevelopmeoton the Flood Plain <br />TheOutchCreek baslois largely used forfarmllod pas- <br />ture 130d "ith scattered residential areas from sr.."s Street-to the <br />~th. The ColumbIne Country Club spans Dutch Creek In the reach <br />from the South Platte Rive; to Platte Canyoo Road. Several residen- <br />tial developlT1ents extend uClstream of Platte Canyon Road alo"9 the <br />southern basin boundary of Dutch Creek but are located outside of <br />the flood plain. Farm and ranch buildings are scatter"ed througllOut <br />the basin and areoccIIsioflillly IOCllted On or 08<lr the flOOd plain, <br />Part of a residential development extends across the Coon Crook flood <br />plain about I mile atKIve the mouth. Several othor development sites <br />are located I n the upper re~ches of the Coon Creek and Lilley Gulch <br />b;'Islns. <br /> <br />The urban devolopment of the Dutch Creek basin has now <br />begun and It Isoxpoctvdtoconfinue. Forexample,theeastern <br />port-lof\otfheDut-chCreekbasln Is Included In the "Columbine" <br />CorrtI1unlty Developmont Area as described In "Populaflon, DonverMetro <br />Area"published by the lnter_CountyReqlonal PlannlngCanrnlsslon. <br />The population proJectIons of ColumblneC.O.A. lnthatpubl1catlon <br />are frOM 5,000 In 1965 to 7,000 in 1970, 10,000 by 1980, and 20,000 <br />in the year 2000. Stl~dles of the Oonver metMpolitan 1lr"", made bv <br />others pradlcted that the Outch Creek basin would be approximately <br />36 percent developed uy 1980. <br /> <br />Rn~ds Across the Streams <br />Dutch Creek has five road crossings of wnlch only one, <br />afPlatteCilonyonROIId, isonabrldge. The rerli'lnd"r areculvert-s, <br />of concret-e or corrugat-ed metal. Inaddltion,theroarefoursrnall <br />bridges at the Columbine Country Club for pad"strl~n and gal f cart <br />crossi~s. These bridges were consIdered in the study iloS having no <br />effect on overbank flooding. Of all tM road crosslnqs only South <br />Carr Street Is adequate to pass the Intermediate Regional Flood <br />without overtopplnq the roadway. <br /> <br />" <br />