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Federal Emergency Management Agency Washington, D.C. 20472 FEB 232000 CERTIFIED MAIL RETURN RECEIPT REQUESTED IN REPLY REFER TO: Case No.: 99-08-4lOP The Honorable David Phifer Mayor, City of Greenwood Village 6060 South Quebec Street Greenwood Village, CO 80111 Community: City of Greenwood Village, Colorado Community No.: 080195 Panel Affected: 08005C0455 J Ef~ective. ~ate of J UN 2 9 2000 ThIS ReVISIon: 102-I-A-C Dear Mayor Phifer: This responds to a request that the Federal Emergency Management Agency (FEMA) revise the effective Flood Insurance Rate Map (FIRM) and Flood Insurance Study (PIS) report for Arapahoe County, Colorado and Incorporated Areas (the effective FIRM and FIS report for your community), in accordance with Part 65 of the National Flood Insurance Program (NFIP) regulations. In a letter dated August 18, 1999, Mr. Bill DeGroot, P.E., Chief, Floodplain Management Program, Urban Drainage and Flood Control District, requested that FEMA revise the FIRM and FIS report to show the effects of construction along Big Dry Creek of major drainageway features that consists of bank protection, grade-control structures, crossing structures, and detention facilities, including Pond 10 just upstream of South University Boulevard, and revised hydrologic and hydraulic analyses for Big Dry Creek Tributary A and Big Dry Creek Tributary C. All data required to complete our review of this request were submitted with letters from Mr. DeGroot and P.E., Project Manager, WRC Engineering, Inc. We have completed our review of the submitted data and the flood data shown on the effective FIRM and FIS report. We have revised the FIRM and FIS report to modify the elevations and floodplain and floodway boundary delineations of the flood having a I-percent chance of being equaled or exceeded in any given year (base flood) along Big Dry Creek from just upstream to approximately 150 feet upstream of West Littleton Boulevard and from approximately 750 feet upstream of West Littleton Boulevard to just downstream of Orchard Road. As a result of the modifications, the base flood elevations (BFEs) for Big Dry Creek decreased, and the widths of the Special Flood Hazard Area (SFHA), the area that would be inundated by the base flood, and the regulatory floodway increased in some areas and decreased in other areas. The modifications are shown on the enclosed annotated copies of FIRM Panel(s) 08005C0455 J, Profile Panel(s) 06P and 07P, and affected portions of the Summary of Discharges Table and Floodway Data Table. This Letter of Map Revision (LOMR) hereby revises the above-referenced panel(s) of the effective FIRM and the affected portions of the FIS report, both dated August 16, 1995.