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2 flood control improvements, or natural processes. Prior to utili- zation of this report for planning or design purposes, the user is advised to contact the Urban Drainage & Flood Control District or the Colorado Water Conservation Board to determine if the in- formation in this report has been amended. Goldsmith Gulch. Along the gulch in Arapahoe County, certain high density developments are planned with other reaches of the channel remaining unchanged from their natural condition. The report was prepared by Gingery Associates, Inc., Consulting Engineers, Englewood, Colorado, at the request of the Urban Drainage & Flood Control District. Goldsmith Gulch is tributary to Cherry Creek with the confluence near Monaco Boulevard, approximately four miles downstream of the Cherry Creek Dam. The regional location of Goldsmith Gulch and two tributaries included in this study is shown on Sheet 1 of 20. The study area extends from Cherry Creek approximately eight miles southeast and upstream to Arapahoe Road in Arapahoe County. Through this reach of Goldsmith Gulch, 17 major roads and high- ways cross the gulch as does the Highline Canal. Development has encroached up to the Gulch, particularly through Denver, where various structural improvements have been made to provide a limited degree of conveyance for flood flows. Acknowledgements Survey control data for this study was collected and compiled by Western Control of Golden, Colorado, and Gingery Associates, Inc. of Englewood, Colorado. The topographic mapping was prepared by Kucera and Associates, Inc., of Denver, Colorado. The mapping and survey control were completed under a separate contract with the Urban Drainage and Flood Control District. - STUDY AREA DESCRIPTION - The Southmoor Park Tributary drains into the main gulch at a point just upstream of Dartmouth Avenue. The study area extends ap- proximately 0.7 miles upstream into the Southmoor development in southeast Denver. The study area includes the large Southmoor Park located just south of Hampden Avenue between Poplar and Oneida Way. The park area serves as a detention pond which re- duces flood magnitudes from the tributary through the reach down- stream of Hampden Avenue. In addition to the Hampden Avenue crossing, a second road crossing has been constructed across this tributary. The Flood Hazard Area Delineation Study for Goldsmith Gulch includes the main stream of Goldsmith Gulch and two tributaries identified as the Southmoor Park Tributary and the West Tributary. The study area extends through three communities including the City and County of Denver, the City of Greenwood Village and Arapahoe County. The main stream of Goldsmith Gulch downstream of Belleview Avenue, as well as the Southmoor Park Tributary, is located within the City and County of Denver. Between Belleview Avenue and Orchard Road, the main stream of Goldsmith Gulch and the lower reach of the West Tributary traverses through Greenwood Village. The upper portion of the study area, upstream of Orchard Road, is located in an unincorporated part of Arapahoe County. The West Tributary joins the main gulch at a point approximately one-half mile north of Orchard Road. The study reach of this tributary extends approximately 1.2 miles south from the confluence to Peakview Avenue. Two road crossings are included in this study reach. Other than culvert improvements constructed as part of Orchard Road and peakview Avenue, the tributary remains in a natural condition. Through Denver, the study area is primarily urbanized or in the process of development. The reach of the drainageway through Greenwood Village is planned for development with low density residential and office park land uses in the areas adjoining