FLOOD10967 - Laserfiche WebLink

Home Browse Search

Federal Emergency Managernent Agency Washington, D.C. 20472 JUl242003 CERTIFIED MAIL RETURN RECEIPT REQUESTED IN REPLY REFER TO: Case No.: 03-08-0362P The Honorable Marie Mackenzie Chair, Arapahoe County Board of Commissioners 5334 South Prince Street Littleton, CO 80166-0060 Community: Arapahoe County, CO Community No.: 080011 Panel Affected: 08005C0170 J Effective Date of J U l 2 I. 2003 This Revision: , 102-D-A Dear Ms. Mackenzie: This responds to a request that the Federal Emergency Management Agency (FJEMA) revise the effective Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) report for Arapahoe County, Colorado and Incorporated Areas, in accordance with Part 65 of the National Flood Insurance Program (NFIP) regulations. In a letter dated April 10,2003, , P.E., Project Engineer, ICON Engineering, Inc., requested that FEMA revise the FIRM and FIS report along Cherry Creek from approximately 1,430 feet downstream to approximately 570 feet upstream of the Highline Canal crossing to show the effects of channel modifications associated with construction of Drop Structures 22 (D22) and 23 (D23). D22 and D23 are located approximately 680 feet downstream and approximately 100 feel downstream, respectively, of the Highline Canal crossing. The channel modifications included construction of two grouted boulder drop structures, demolition and reconstruction of two pedestrian bridges, and placement of fill within the revised reach. This request follows up on a Conditional Letter of Map Revision issued on December 13, 2001. All data required to complete our review of this request were submitted with letters from . We have completed our review of the submitted data and the flood data shown on the effective FIRM and in the effective FIS report. We have revised the FIRM and FIS report to modi~y' the elevations and floodplain boundary delineations of the flood having a I-percent chance of being ~:qualed or exceeded in any given year (base flood) along Cherry Creek in your community from approximately 1,430 feet downstream to approximately 950 feet downstream of the Highline Canal crossing. As a result of the modifications, the Base Flood Elevations (BFEs) and the width of the Special Flood Hazard Area (SFHA), the area that would be inundated by the base flood, for Cherry Creek decreased. On the eflective FIRM, no regulatory floodway is identified through this reach of Cherry Creek. The modifications are shown on the enclosed annotated copies of FIRM Panel 08005CO 170 J and Profile Panel 31 P. This Letter of Map Revision (LOMR) hereby revises the above-referenced panel of the effective FIR1\1 and the affected portions of the FIS report, hoth dated August 16, 1995. Because this revision request also affects the City and County of Denver, a separate LOMR for that community was issued on the same date as this LOMR.