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<br />". <br /> <br />development involving residential subdivisions gr~at~r than 50 lots or occurring on sites gr;~~ <br />~an 5 acres~ommercial construction, industrial cons' c IOn 0 pu IC IOn' <br />aClhnes, or construction of flood control facilities. <br /> <br />The Town of Fairplay should regulate the approximate floodplains on a case-by-case basis subject <br />to a detailed hydrologic and hydraulic analysis, A detailed floodplain analysis may be required in <br />certain cases and should be performed by a professional engineer and submitted by the developer or <br />development proponent. An approximate floodplain analysis can be submitted by a developer or <br />development proponent, for the cases listed above, in accordance with the determinations of the <br />Colorado Water Conservation Board regarding the applicability of the Guidelines, <br /> <br />Hvdraulic Analvsis <br /> <br />The hydraulic analysis for the preparation of the original FHBM, which is the source of the existing <br />FIRM, likely consisted of interpretation of USGS quadrangle mapping by HUD's engineering <br />consultant, along with telephone discussions with local officials, The telephone discussions <br />addressed any historic flood problems that may have occurred in Fairplay. The FIA did perform <br />and did not have the benefit of any detailed hydrologic and hydraulic analyses for the preparation of <br />the FHBM. The hydraulic analysis for the preparation of the FHBM for unincorporated Park <br />County, including map panel # 9, part of which is included in this report, was most likely very <br />similar to the analysis for the Town of Fairplay, No detailed analyses were performed for <br />unincorporated portions of the county. Future hydraulic analyses, submitted by developers or <br />development proponents, for determining 100-year water surface elevations for approximate <br />floodplains may be computed using FEMA's Quick-2 computer program, the Corps of Engineers' <br />HEC.2 computer program, or other acceptable hydraulic methods. <br /> <br />Floodnlain Mannine <br /> <br />The official floodplain information for the Town of Fairplay is the Flood Insurance Rate Map <br />(FHBM), dated August 5, 1986, The FIRM was originally prepared by the Federal Insurance <br />Administration (FIA) as a Flood Hazard Boundary Map (FHBM) on July 18, 1975. It was <br />converted into a FIRM by a reprinting that involved no changes other than the title of the map. <br />That reprinting occurred on August 5, 1986. In addition to the town's FIRM, the portion of map <br />panel # 9 of the FHBMs for unincorporated Park County, dated November 22, 1977, that is now <br />within the corporate limits of Fairplay is also part of the town's official floodplain mapping, The <br />FIRM and the applicable portion of map panel # 9 of the Park County FHBMs are the only <br />available floodplain mapping for the Town ofFairplay at this time, _ , <br />~P~cJ~~ <br /> <br />The town's consulting drainage engineer, Mr. Kent Baker of ???, is currently preparing a master <br />drainage plan for the town. The master drainage plan will include a detailed hydrologic analysis <br />and a detailed hydraulic analysis for Beaver Creek within the current corporate limits, At this time <br />it is not anticipated that a detailed analysis will be performed for the Middle Fork of the South <br />Platte River. It is recommended that the new detailed information being developed for Beaver <br />Creek should be submitted to FEMA at a future date to replace the approximate information <br />currently shown on map paule # 9 of the Park County FHBMs. Based on CWCB field observations <br />