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i, ,; Federal Emergency Management Agency Washington, D.C. 20472 MAY 0 It 2001t CERTIFIED MAIL RETURN RECEIPT REQUESTED IN REPLY REFER TO: Case No.: 03-08-0229P The Honorable Lionel Rivera Mayor, City of Colorado Springs P.O. Box 1575 Colorado Springs, CO 8090 I Community: City of Colorado Springs, CO Community No.: 080060 Panels Affected: 08041 C05l4 F and 0727 F ::C~:~i~~~of SEP 02 200lt 102-I-A-C Dear Mayor Rivera: This responds to a request that the Department of Homeland Security's Federal Emergency Management Agency (FEMA) revise the effective Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) report for El Paso 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 February 7,2003, Mr. Steve Jacobsen, P.E., Senior Civil Engineer, Public Works Department, City of Colorado Springs, requested that FEMA revise the FIRM and FIS report to show the effects of construction of a roadway extension of Steel Drive along Monument Creek. The project involved placement offill along the right (looking downstream) overbank of Monument Creek from West Polk Street to approximately 300 feet downstream of Fillmore Street. This request follows up on a Conditional Letter of Map Revision issued on August 16, 2002. All data required to complete our review of this request were submitted with letters from Mr. Michael A. Bartusek, P.E., Project Manager, Associated Design Professionals, Inc., and Mr. Jacobsen. We have completed our review of the submitted data and the flood data shown on the effective FIRM and in the effective FIS report. Our review of the submitted analysis revealed that a discharge of approximately 3,000 cubic per feet second (cfs) would overflow the right overbank of Monument Creek at the Polk Street crossing and become independent of the main channel flow 1bis 3,000-cfs overbank flow would cause shallow flooding in the overbank area when it returns to the mai~ channel. Based on an analysis of this overbank flow, a shallow flooding area that would be inundated by the flood having a I-percent chance of being equaled or exceeded in any'given year (base flood) was delineated. We have revised the FIRM and FIS report to modifY the elevations, floodplain and floodway boundary delineations, and zone designations of the base flood along Monument Creek from approximately 1,550 feet downstream of West Polk Street to approximately 1.830 feet upstream of Fill more Street, a total distance of approximately 0.9 mile. As a result of the modifications, the Base Flood Elevations (BFEs) for the above-referenced reach of Monument Creek 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. In addition, a portion of the right overbank area previously designated Zone AE, an SFHA with BFEs determined, was redesignated Zone AO (Depth I), an SFHA subject to shallow flooding with an average depth of I foot.