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<br />CHANGES ARE MADE IN DETERMINATIONS OF BASE FLOOD ELEVATIONS FOR THE <br />UNINCORPORATED AREAS OF DOUGLAS COUNTY, COLORADO, UNDER THE NATIONAL <br />FLOOD INSURANCE PROGRAM <br /> <br />On September 30, 1987, the Department of Homeland Security's Federal Emergency Management <br />Agency identified Special Flood Hazard Areas (SFHAs) in the unincorporated areas of Douglas County, <br />Colorado, through issuance of a Flood Insurance Rate Map (FIRM). The Mitigation Division has <br />determined that modification of the elevations of the flood having a I-percent chance of being equaled or <br />exceeded in any given year (base flood) for certain locations in this community is appropriate. The <br />modified Base Flood Elevations (BFEs) revise the FIRM for the community. <br /> <br />The changes are being made pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (Public <br />Law 93-234) and are in accordance with the National Flood Insurance Act of 1968, as amended <br />(Title XIII of the Housing and Urban Development Act of 1968, Public Law 90-448), 42 U.S.C. <br />4001-4128, and 44 CFR Part 65. <br /> <br />A hydraulic analysis was performed to incorporate the effects of the Highlands Ranch #122 development <br />along Big Dry Creek Tributary C and has resulted in a revised delineation of the regulatory floodway, <br />increases and decreases in SFHA width, and increased and decreased BFEs for Big Dry Creek <br />Tributary C. The table below indicates existing and modified BFEs for selected locations along the <br />affected lengths of the flooding source( s) cited above. <br /> <br />Location <br /> <br />Existing BFE <br />(feet)* <br /> <br />Modified BFE <br />(feet)* <br /> <br />Approximately 3,450 feet downstream of <br />McArthur Ranch Road <br />Just upstream of McArthur Ranch Road <br /> <br />5,910 <br />5,961 <br /> <br />5,905 <br />5,974 <br /> <br />*National Geodetic Vertical Datum, rounded to nearest whole foot <br /> <br />Under the above-mentioned Acts of 1968 and 1973, the Mitigation Division must develop criteria for <br />floodplain management. To participate in the National Flood Insurance Program (NFIP), the community <br />must use the modified BFEs to administer the floodplain management measures of the NFIP, These <br />modified BFEs will also be used to calculate the appropriate flood insurance premium rates for new <br />buildings and their contents and for the second layer of insurance on existing buildings and contents, <br /> <br />Upon the second publication of notice of these changes in this newspaper, any person has 90 days in <br />which he or she can request, through the Chief Executive Officer of the community, that the Mitigation <br />Division reconsider the determination. Any request for reconsideration must be based on knowledge of <br />changed conditions or new scientific or technical data. All interested parties are on notice that until the <br />90-day period elapses, the Mitigation Division's determination to modify the BFEs may itself be changed, <br /> <br />Any person having knowledge or wishing to comment on these changes should immediately notify: <br /> <br />The Honorable Walter M. Maxwell <br />Chairman, Douglas County <br />Board of Commissioners <br />100 Third Street <br />Castle Rock, CO 80104 <br />