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<br /> <br />Federal Emergency Management Agency <br />Washington, D.C, 20472 <br /> <br />CERTIFIED MAIL <br />RETURN RECEIPT REQUESTED <br /> <br />IN REPLY REFER TO: <br />Case No,: 95-08-142P <br /> <br />The Honorable Thomas R, Eggert <br />Chairperson, Arapahoe County <br />Board of Commissioners <br />5334 South Prince Street <br />Littleton, Colorado 80166 <br /> <br />Community: Arapahoe County, Colorado <br />Community No.: 080011 <br />Panel Affected: 08005C0095 G <br />Effective Date of <br />This Revision: <br /> <br />JUN 201995 <br /> <br />102-I-A-C <br /> <br />Dear Mr. Eggert: <br /> <br />This is in response to a request for a revision to the effective Flood Insurance Study (FIS) and National <br />Flood 1nsurance Program (NFIP) map for your community. Specifically, this responds to a letter dated <br />May 16, 1995, from Mr. David A. Guetig, P.E., Project Manager, Greenhome & O'Mara, Inc., <br />regarding the effective FIS report and Flood Insurance Rate Map (FIRM), for Arapahoe County, Colorado <br />and Incorporated Areas. With his letter, Mr. Guetig provided additional information to support his <br />April 14, 1995, request that the Federal Emergency Management Agency (FEMA) revise the effective <br />FIRM to show the effects of updated topography along Piney Creek. <br /> <br />All data required to complete our review of this request were submitted with Mr. Guetig's April 14 and <br />May 16 letters. Because this Letter of Map Revision (LOMR) solely incorporates more detailed <br />information, fees were not assessed for the review. <br /> <br />We have completed our review of the submitted data and the flood data shown on the effective FIRM and <br />have revised the FIRM to modify the elevations and floodplain and floodway boundary delineations of a <br />f!s2d having a 1-percent chance of being equaled or exceeded in any given year (base flood) along Piney <br />Creek from just upstream of its confluence with Cherry Creek to approximately 1,700 feet upstream of <br />South Parker Road. <br /> <br />The updated topography indicates chalUlel aggradation from approximately 500 feet upstream of the <br />confluence with Cherry Creek to just downstream of South Parker Road. The maximum aggradation of <br />approximately 3.5 feet occurred approximately 500 feet upstream of the confluence with Cherry Creek. <br />The base flood elevations (BFEs) increased along the revised reach from just upstream of the confluence <br />with Cherry Creek to just downstream of South Parker Road, and decreased from just downstream to <br />approximately 1,700 feet upstream of South Parker Road. The maximum increase in BFE, 3.2 feet, <br />occurred approximately 1,000 feet downstream of South Parker Road, and the maximum decrease, <br />0.6 foot, occurred just upstream of South Parker Road, The width of the Special Flood Hazard Area <br />(SFHA) increased from approximately 500 feet upstream of the confluence with Cherry Creek to <br />approximately 300 feet downstream of South Parker Road. The maximum increase in SFHA width, <br />100 feet, occurred approximately 775 feet upstream of the confluence with Cherry Creek. The floodway <br />