FLOOD05243 - Laserfiche WebLink

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I I I I I I I I I I I I I I I I I I II 1.0 INTRODUCTION 1.1 Puroose This report was prepared to guide public and private entities interested in or affected by the potential stocking of non-native fish species in off-channel ponds (public and private). Inundation during flood events is possible at the pond site and could affect endangered fish. The report delineates the 50-year and lOO-year floodplains for the reach of the White River designated as "critical habitat" by the U.S. Fish and Wildlife Service (Service). The report allows interested parties to determine preliminarily whether particular ponds are in the 50-year and lOO-year floodplain of the White River. 1.2 AcknowledlZements The assistance and cooperation in supplying information of the individuals, agencies, firms, and organizations listed below are appreciated and gratefully acknowledged: Larry F. Lang Brian Hyde Jerry (Ed) Vail Bob McCabe Chief, Flood Control & Floodplain Management Section, Colorado Water Conservation Board (CWCB); Resource Scientist III, Flood Control and Floodplain Management Section, CWCB; Hydrologist, United States Geological Survey; Colorado State Engineer's Office, Division 5; U.S. Army Corps of Engineers, Sacramento District Federal Emergency Management Agency 1.3 Related Flood Studies The Federal Emergency Management Agency prepared Flood Insurance Studies (FIS') with accompanying Flood Insurance Rate Maps for the Town of Rangely and for unincorporated Rio Blanco County, dated 9/90 and 2/90 respectively (References 1 & 2). The studies include peak flow values for 50-year and lOO-year floods in the vicinity of Rangely, Colorado, along with detailed floodplain mapping. The Rio Blanco County FIS also includes approximate floodplain information for the remainder of the study reach of the White River that is not covered by detailed mapping. The flow values from these studies and the detailed floodplain delineations have been incorporated into this report. 1