FLOOD00608 - Laserfiche WebLink

Home Browse Search

through the drainage network. The 100-year peak discharge for Goldsmith Gulch, at the mouth, is 4,064 cfs (Reference 98). Selected cross sections were field surveyed to provide channel definition along Goldsmith Gulch (Reference 99). Sellards & Grigg, Inc. was responsible for the hydraulic analyses to determine water-surface profiles and floodway analysis. Several detention ponds were constructed for the purpose of storing floodwaters and reducing peak flows (Reference 99). '- Calculated water-surface profiles were developed using the COE Computer Program HEC-2 (References 99-102). Table 3, "Floodway Data," and the Profile Panels (Exhibit 1) for Goldsmith Gulch were revised as a result of this revision. " 10.2 Second Revision . This study was revised on April 16, 1993, to revise flooding along Westerly Creek in the City and County of Denver, Colorado. The basis for this revision is revised hydrologic and hydraulic analyses along Westerly Creek from 11th Avenue (within the City and County of Denver) to approximately 1,500 feet downstream of Eas t Avenue (located wi thin the ci ty of Aurora), due to the construction of the Westerly Creek Dam by the COE, Detailed study information is included for Westerly Creek from 11th Avenue to approximately 1,500 feet downstream of East Avenue. This study was performed by Love & Associates, Inc, Hydrologic analyses were carried out using the EPA's Storm Water Management Model for hydrograph routing through the drainage network, The 100-year peak discharge for Westerly Creek is 6,790 cfs at the mouth and 100 cfs at Kelly Road (Reference 105). . Cross-section data for the HEC-2 backwater analysis were developed by Merrick and Company to reflect constructed channel improvements in the study reach (Reference 106). Calculated water-surface profiles were developed using the COE HEC-2 hydraulic computer model, Floodway Data Tables and Profile Panels for Westerly Creek were added as a result of this reV1Slon, The Summary of Discharges Table was also revised to reflect this revision. . 10.3 Third Revision This study was revised on March 4, 1996, to modify the flooding along Sand Creek in the City and County of Denver, Colorado. The basis for this revision was to incorporate updated topographic information and the effects of the construction of bridges and channel improvements along Sand Creek through the Stapleton International Airport. The analysis for this reV1S1on was performed by Kiowa Engineering Corporation, Denver, Colorado, for the UDFCD. 67