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FLOOD INSURANCE STUDY 1.0 INTRODUCTION 1.1 Purpose of Study This Flood Insurance Study investigates the existence and severity of flood hazards in the unincorporated areas of Yuma County, COlorado, and aids in the administration of the National Flood Insurance Act, of 1966 and the Flood Disaster Protection Act of 1973. This study will be used to convert Yuma County to the regular program of flood insurance by the Federal Emergency Manage- ment Agency (FEMA). Local and regional planners will use this study in their efforts to promote sound flood plain management. This Flood Insurance Study was prepared by compiling existing hydrologic and hydraulic technical and scientific data prepared by other organization(s) originally for purposes other than the National Flood Insurance Program (NFIP). The data were identified as the best available at the time of compilation of this Flood Insurance Study and should depict the general conditions of the flooding sources with relative accuracy. FEMA performed a cursory review and accepted the data as valid for purposes of this Flood Insurance Study and the NFIP. However, if better information is known to exist or has been developed since the date of this report, the information should be immediately forwarded to the Natural and Technological Hazards Division, FEMA, Building 710, Denver Federal Center, Lakewood, Colorado 60225 for consideration for revision of this study. In some states or communities, flood plain management criteria or regulations may exist that are more restrictive or comprehensive than those on which this federally supported study is based. These criteria take precedence Over the minimum Federal criteria for purposes of regulating development in the flood plain, as set forth in the Code of Federal Regulations at 44 CFR, 60.3(c). In such cases, however, it shall be understood that the state (or other jurisdictional agency) shall be able to explain these requirements and criteria. 1.2 Authority and Acknowledgments The sources of authority for this Flood Insurance Study are the National Flood Insurance Act of 1966 and the Flood Disaster Protec- tion Act of 1973. The hydrologic and hydraulic analyses for this study were performed by the U.S. Army Corps of Engineers (COE), in compliance with the Colorado Water Conservation Board, as reported in Flood Plain Information Report - North Fork Republican River - Town of Wray and Yuma County, Colorado (Reference 1).