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<br />FLOOD INSURANCE STUDY <br />ARAPAHOE COUNTY, COLORADO AND INCORPORATED AREAS <br /> <br />1.0 INTRODUCTION <br /> <br />1.1 Purpose of Study <br /> <br />This Flood Insurance Study investigates the existence and severity <br />of flood hazards in the geographic area of Arapahoe County, <br />Colorado, including the Cities of Aurora, Cherry Hills Village, <br />Englewood, Greenwood Village, Glendale, Littleton, and Sheridan; <br />the Towns of Bow Mar, Columbine Valley, and Deer Trail; and the <br />unincorporated areas of Arapahoe County (hereinafter referred to <br />collectively as Arapahoe County), and aids in the administration of <br />the National Flood Insurance Act of 1968 and the Flood Disaster <br />Protection Act of 1973. (Flood hazard information presented in <br />this study for the Cities of Aurora and Littleton has been included <br />for information purposes only. For flood insurance purposes see <br />separately published Flood Insurance Study.) This study has <br />developed flood risk data for various areas of Arapahoe County that <br />will be used to establish actuarial flood insurance rates and <br />assist the community in its efforts to promote sound floodplain <br />management. Minimum floodplain management requirements for <br />participation in the National Flood Insurance Program (NFIP) are <br />set forth in the Code of Federal Regulations at 44 CFR, 60.3. <br /> <br />In some states or communi ties, floodplain management cri teria or <br />regulations may exist that are more restrictive or comprehensive <br />than the minimum Federal requirements. In such cases, the more <br />restrictive criteria take precedence and the State (or other <br />juriSdictional agency) will be able to explain them. <br /> <br />1.2 Authority and Acknowledgments <br /> <br />The sources of authori ty <br />National Flood Insurance <br />Protection Act of 1973. <br /> <br />for this Flood <br />Act of 1968 <br /> <br />Insurance Study are the <br />and the Flood Disaster <br /> <br />The original hydrologic and hydraulic analyses for the Flood <br />Insurance Study for the unincorporated areas of Arapahoe County <br />were performed by Gingery and Associates, Inc., for the Federal <br />Insurance Administration (FIA), under Contract No. H-3716. This <br />work was completed in July 197~ (Reference 1). <br /> <br />Hydrologic and hydraulic information for portions of Bear Creek, <br />Big Dry Creek, Blackmer Gulch, Cherry Creek, Dutch Creek, Granby <br />Ditch, Goldsmith Gulch, West Tributary to Goldsmith Gulch, <br />Greenwood Gulch, Lee Gulch, Little's Creek, Little Dry Creek, <br />Quincy Gulch, Sable Ditch and Sable Ditch Overflow, Sand Creek, <br />Slaughterhouse Gulch and its South Tributary, Toll Gate Creek, West <br />Toll Gate Creek, West Toll Gate Creek Tributary, East Toll Gate <br />Creek, Unnamed Creek, West Bijou Creek, Westerly Creek, Columbia <br />Creek, and Side Creek and its Tributary were taken directly from <br />