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<br />SECTION I <br /> <br />INTRODUCTION <br /> <br />This major dralnageway planning study for Big Dry Creek in Adams <br />and Jefferson Count ies Is a part of th., 1972 work pr09ram of the Urban <br />Drainage and Flood Control District of the Denver Met]Copol itan Area, This <br />study has been performed for the City of Westmin!lter, Jefferson County, <br />Adams County, and the Urban Drainage and Flood Control DistrIct. <br /> <br />The Big Dry Creek drainage ba$lnlles in thE' northern portion of the <br />Denver metropol itan area, is made up mostly of a~lricultural sub-basins, <br />and the total area of the basIn Is 86.3 square mIles, with elevations <br />ranging from 5040 feet to 6500 feet. The Big Dry Creek draInage basin Is <br />In Townships I and 2 South, Ranges 67, 68, 69 and 70 Vest of the 6th <br />PrincIpal Meridian. <br /> <br />The reader Is cautIoned not to confuse this Big Dry Creek with the <br />Big Dry Creek lying In the southern pOl't Ion of the Denver metropol I tan <br />area, or with the stream with a 5 iml lal' name fIOl."ng easterly from the <br />CIty of Boulder. <br /> <br />A signIficant portion of the near..future populati'on growth of the <br />Denver metropol itan area is I ikely to OCCU]' in the Big Dry Creek bas in of <br />Jefferson and Adams Counties. It Is for thIs reason that the Urban Drainage <br />and Flood Control District has IdentIfied thIs basIn as a prIorIty Item in <br />the continuing program of preparing master plans for major draInages. <br /> <br />The fact that urban drainage costs can be reduced, and benefIts In- <br />creased, by early action projects is well E!stabIIshed. <br /> <br />By performIng the BIg Dry Creek major draInage moister plannIng now, <br />rather than after deve I opment occu(S, it is es t Imated that the pub I I cis <br />saved some five to ten mIllIon dol lars In costs. At the same time, the <br />publIc Is able to achieve open-space benefits and numerous other auxil iary <br />benefits which normally would not <lccrLle as ] iberal Iy under a "COrrE!ct Ive" <br />program. In other words, the "prevent Ive" program approach, of which this <br />study Is a part, and which is In aCcordance with the Urban Drainage Manual, <br />is the most opportune, tImely, and cost effective type of p.lannlng. <br /> <br />SCOPE OF WORK <br /> <br />The study Is broken Into two phases. Phase A dealt with development <br />of alternative plans, approximate costs, damage p,)tentlal, and ,'ecommen" <br />dations for Improvements to the gulches. BI3sed upon the results of Phase <br />A, the local entities and the Urban Dralna~. and Flood Control District <br /> <br />I-I <br />