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CHANGES ARE MADE IN DETERMINATIONS OF BASE FLOOD ELEVATIONS FOR THE UNINCORPORATED AREAS OF EL PASO COUNTY, COLORADO, UNDER THE NATIONAL FLOOD INSURANCE PROGRAM On March 17, 1997, the Federal Emergency Management Agency identified Special Flood Hazard Areas (SFHAs) in the Unincorporated Areas of EI Paso County, Colorado, through issuance of a Flood Insurance Rate Map (FIRM). The Federal Insurance and Mitigation Administration has determined that modification of the elevations of the flood having a I-percent chance of being equaled or exceeded in any given year (base flood) for certain locations in this community is appropriate. The modified Base Flood Elevations (BFEs) revise the FIRM for the community. The changes are being made pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (Public Law 93-234) and are in accordance with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, Public Law 90-448), 42 U.S.C. 4001-4128, and 44 CFR Part 65. A detailed hydrologic analysis was performed for the watershed of the unnamed tributary to Black Squirrel Creek (unnamed tributary) and a hydraulic analysis was performed to incorporate the effects of construction of a concrete drop structure and placement of a 20-foot by 6.5-foot open-bottom, reinforced-concrete box culvert in association with development of the Falcon Vista Subdivision, from just upstream of Falcon Highway to just downstream of U.S. Highway 24, and more detailed topographic information to reflect existing watershed conditions along the unnamed tributary from its mouth to just downstream of U.S. Highway 24. These analyses have resulted in establishment of BFEs and increases and decreases in SFHA width for the unnamed tributary. From just upstream of Swingline Road to just downstream of U.S. Highway 24, the flood having a I-percent chance of being equaled or exceeded in any given year is contained in the channel. The table below indicates existing and modified BFEs for selected locations along the affected lengths of the flooding source(s) cited above. Location Existing BFE (feet) * Modified BFE (feet) * Approximately 1,225 feet downstream of Falcon Highway None 6,758 Approximately 125 feet downstream of Swingline Road None 6,805 *National Geodetic Vertical Datum, rounded to nearest whole foot Under the above-mentioned Acts of 1968 and 1973, the Federal Insurance and Mitigation Administration must develop criteria for floodplain management. To participate in the National Flood Insurance Program (NFIP), the community must use the modified BFEs to administer the floodplain management measures of the NFIP. These modified BFEs will also be used to calculate the appropriate flood insurance premium rates for new buildings and their contents and for the second layer of insurance on existing buildings and contents. Upon the second publication of notice of these changes in this newspaper, any person has 90 days in which he or she can request, through the Chief Executive Officer of the community, that the Federal Insurance and Mitigation Administration reconsider the determination. Any request for reconsideration must be based on knowledge of changed conditions or new scientific or technical data. All interested parties are on notice that until the 90-day period elapses, the Federal Insurance and Mitigation Administration's determination to modify the BFEs may itself be changed.