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' 1.0 INTRODUCTION <br />' 1.1 Purpose <br />This report was prepared to guide public and private entities interested in or affected by the <br />potential stocking of non - native fish species in off - channel ponds (public and private). Inundation <br />during flood events is possible at the pond sites and could affect endangered fish. The report <br />delineates the 50 -year and 100 -year floodplains for the reach of the Yampa River designated as <br />"critical habitat" by the U.S. Fish and Wildlife Service (Service). The report allows interested <br />parties to determine preliminarily whether particular ponds are in the 50 -year and 100 -year <br />floodplain of the Yampa River. <br />1.2 Acknowledgements <br />The assistance and cooperation in supplying information of the individuals, agencies, firms, and <br />organizations listed below are appreciated and gratefully acknowledged: <br />' Larry F. Lang - Chief, Flood Control & Floodplain Management Section, <br />Colorado Water Conservation Board (CWCB); <br />Brian Hyde - Resource Scientist III, Flood Control and Floodplain <br />Management Section, CWCB; <br />Jerry (Ed) Vail - Hydrologist, United States Geological Survey; <br />Bob McCabe - Colorado State Engineer's Office, Division 5 <br />U.S. Army Corps of Engineers, Sacramento District <br />Federal Emergency Management Agency <br />' 1.3 Related Flood Studies <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 1 & 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 />1 FIS' and the accompanying detailed floodplain delineations have been incorporated into this <br />report <br />L 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 />