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10.2 Second Revision This study was reyised on March 2, 1993) to reflect the effects recent urban deyelopments and associa~ed improyements along Creek. These improyements consist of thel following: I New bridges: Cottonwood'Driy~ bridge Lincoln Avenue bridge E-470 bridges of the Cherry Bridge replacements: West Par~er ROad bridge Stroh Av~nue bridge i Parker Station Subdivision Parker W,ter and Sanitation DistricF treatment plant expansion Cherry Creek was reanalyzed from the Arapahoe/Douglas County line to a point approximately 2,100 feet aboye Stroh Avenue bridge. The revised reach passes through both the Town of: Parker and the unincorporated areas of Douglas County. The reyised hy~raulic analysis for this reach was based on a restudy performed by CRB Engineering, Inc., Lakewood, Colorado, which utilized the Corps of $ngineers' HEC-2 step-backwater computer program. The study is pres~nted in a technical report, entitled "Request for Map Reyision for Cherry Creek at Parker," dated April 1991 (Reference 22). As a resul~ of this study the base 000- 'year) flood eleyations both decreased, and increased throughout the revised reach, and 100- and 500-year floodplain and 100-year floodway boundaries were also reyised. Topographic maps at a scale of 1"=400' and a contour interval of 4 feet, prod1j.ced by the Urban Drainage and Flood Control District and reyised by Falcon Air Maps on May 18, 1990, (Reference 22) were utilized to produce Ithe new boundaries as shown on the revised Flood Insurance Rate Map Pa~els 0070 Band 0185 A. These Flood Insurance Rate Map panels also jshow the new corporate limit boundaries for the Town of Parker, Colotado. Flood Profile Panels OlP through 06P were replaced with revised llrofile Panels OlP through 09P, and Floodway Data was revised to reflect:the effect of this study. The Summa~y of Discharges was also revise~ to show flows at new road cross1ngs. ' Urban developments: . . 10.3 Third Reyision This study was revised on February 2, LOMRs: I 19~6, to incorporate the following I a. The LOMR issued on August 29, 1994, for a reach along Jordan Road Tributary and a reach along Newlin Gulch as shown on FIRM Panel 0070. This LOMR was iss"ed to show the effects of the construction of the Jordan Ro~d Tributary diyersion channel and two 4-foot by 9-foot bo~ culverts along Jordan Road Tributary from its confluepce with Newlin Gulch to approximately 700 feet upstrea~ of Stonegate Parkway, and the effects of updated topographic I information along Newlin Gulch 20