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1 <br /> <br /> <br /> <br />1 <br />ri <br /> <br /> <br /> <br />1 <br /> <br /> <br />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 site and could affect endangered fish. The report <br />delineates the 50-year and 100-year floodplains for the reach of the White 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 White River. <br />1.2 Acknowled ements <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 <br />Section, Colorado Water Conservation Board <br />(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 />1.3 <br /> <br /> <br /> <br /> <br /> <br />Federal Emergency Management Agency <br />Related Flood Studies <br />The Federal Emergency Management Agency prepared Flood Insurance Studies (FIS') with <br />accompanying Flood Insurance Rate Maps for the Town of Rangely and for unincorporated Rio <br />Blanco County, dated 9/90 and 2/90 respectively (References 1 & 2). The studies include peak <br />flow values for 50-year and 100-year floods in the vicinity of Rangely, Colorado, along with <br />detailed floodplain mapping. The Rio Blanco County FIS also includes approximate floodplain <br />information for the remainder of the study reach of the White River that is not covered by <br />detailed mapping. The flow values from these studies and the detailed floodplain delineations <br />have been incorporated into this report. <br />1 <br />