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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />II <br />I <br />I <br /> <br />SECTION II <br />STUDY AREA <br /> <br />Slaughterhouse Gulch is located in the south-central portion <br />of the Denver Metropolitan area. It is an eastern tributary <br />to the South Platte River with the natural confluence located <br />approximately 1/4 of a mile south of Belleview Avenue. <br /> <br />Under the indexing system completed in Project REUSE, spon- <br />sored by the Denver Regional Council of Governments (DRCOG) <br />and the Urban Drainage and Flood Control District (UD&FCD), <br />the Slaughterhouse Gulch basin has been designated as Basin <br />1-05-5700-01. The study classifies the basin as nearing full <br />development status within the immediate future. Also, the <br />channel is generally defineable in terms of the 5- tolO-year <br />storm generated discharge while having a significant flood <br />plain. This classification gives the basin a Problem Poten- <br />tial Ranking of 5 which denotes a high potential for flood <br />damage. This basin is one of twenty in this category out <br />of approximately 398 basins in the region. <br /> <br />The study reach extends from the South Platte River to Powers <br />Park on the main tributary and from Windermere Street to the <br />corner of Datura Street and Littleton Boulevard on the south <br />tributary, The study area is within the corporate limits of <br />the City of Littleton while the basin extends into Arapahoe <br />County. <br /> <br />A. DESCRIPTION <br /> <br />Sheet 1 of 8 in Appendix B, Index Map, shows the relation <br />of the Slaughterhouse Gulch Basin relative to the physical <br />features of Littleton, Colorado. The basin drains gener- <br />ally in a northwesterly direction. The drainageway crosses <br />every major north-south arterial within the City from Santa <br />Fe to University Boulevard, as well as two major irrigation <br />ditches, City Ditch and Highline Canal. The total basin <br />area above Santa Fe Avenue is 2.02 square miles. This <br />study deals with approximately the lower third of the total <br />basin extending from the South Platte River to Powers <br />Park and from Windemere Street to Datura Street. This south <br />tributary is approximately 0.37 square miles in area. The <br />south tributary area considered in the study extends approxi- <br />mately to Datura Street. The channel thalweg for this <br />basin is ,located in Windermere Street to Littleton Boule- <br />vard then easterly towards Datura Street. <br /> <br />The total thalweg length of the study area is approxi- <br />mately 1.7 miles, 50% of which exists as street. <br />Certain physical features associated with Slaughterhouse <br />Gulch, in addition to the street crossings, include the <br />D&RGW and the AT&SF railroad track crossings located just <br />east of Rio Grande Street, the elevated City Ditch flume <br />crossing located east of the tracks and the Powers Park <br /> <br />11-1 <br />