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<br />LIST OF FIGURES <br /> <br />FIGURE , , <br />I Location of Upper Colorado River Basin <br />2 Location of Yampa Drainage Basin in Colorado <br />3 Yampa Drainage B~in Map <br />4 Location of Study Reach With Hydrologic Points <br />5 Graph of Flow vs. Drainage Area <br />6 Location of Reaches Within Study Area <br />7A-L Cross-Sections With Flood Elevations <br />8 Base Map Topographic Index and Scale <br />9 Index Map of Plates <br /> <br />1.0 INTRODUCTION <br /> <br />1.1 Purpose <br /> <br />This report was prepared by the CWCB in order to assist local officials at the City of Craig and <br />at Moffat County in their floodplain management activities. The report delineates the 50-year <br />and 100-year floodplains for the reach of the Yampa River from Craig downstream to Dinosaur <br />National Monument. The report allows interested parties to determine preliminarily whether <br />particular sites are in the 50-year and 100-year floodplain of the Yampa River. <br /> <br />PLATE <br />1-10 Approximate Flooded Area Maps <br />11-14 Elevation Discharge Curves <br /> <br />1.2 Acknowledgements <br /> <br />The assistance and cooperation in supplying information of the individuals, agencies, firms, and <br />organizations listed below are appreciated and gratefully acknowledged: <br /> <br />Larry F. Lang <br /> <br />Chief, Flood Control & Floodplain Management Section, <br />Colorado Water Conservation Board (CWCB); <br /> <br />Brian Hyde <br /> <br />Resource Scientist III, Flood Control and Floodplain <br />Management Section, CWCB; <br /> <br />Jerry (Ed) Vail <br /> <br />Hydrologist, United States Geological Survey; <br /> <br />Bob McCabe <br /> <br />Colorado State Engineer's Office, Division 5 <br /> <br />U.S, Army Corps of Engineers, Sacramento District <br /> <br />Federal Emergency Management Agency <br /> <br />1.3 Related Flood Studies <br /> <br />The Federal Emergency Management Agency prepared Flood Insurance Studies (FIS') with <br />accompanying Flood Insurance Rate Maps for the City of Craig and for unincorporated Moffat <br />County, dated 3/84 and 8/82 respectively (References I & 2). The FIS' include peak flow values <br />for 50-year and 100-year floods in the vicinity of Craig, Colorado, along with detailed floodplain <br />mapping. The Moffat County FIS also includes approximate floodplain information for an <br />additional one-half mile downstream of the limit of detailed study. The flow values from the two <br />FIS' and the accompanying detailed floodplain delineations have been incorporated into this <br />report <br /> <br />The U.S Army Corps of Engineers prepared a Flood Hazard Information Report for Craig, <br />Colorado, dated November, 1977 (Reference 3). The study includes detailed flood mapping and <br />flow values for stream reaches within the City of Craig and in adjacent portions of unincorporated <br /> <br />iii <br /> <br />1 <br />