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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />INTERPRETATION AND USE OF REPORI' DATA <br /> <br />The objective of this report is to provide floodplain management <br />information and mapping for the Town of Parachute, the Colorado Water <br />Conservation Board and the Federal EIrergency Managenent Agency to use in their <br />respective land use planning and flood insurance program administration. The <br />flood elevations contained herein can be used by individuals to determine the <br />extent of potential flooding on certain parcels within the study area. <br /> <br />Data for the 10-, 50-, 100- and 500-year floods are contained herein. This <br />data is in conformance with the requirements of the Colorado Water Conservation <br />Board and the Federal EIrergency Managenent Agency. <br /> <br />The 100-year flood event is used to define floodplain limits which in turn <br />affect land uses permitted in certain areas. The State of Colorado has <br />designated the 100-year event as the design flood for protecting structures and <br />dwellings, and for establishing flo~ay requirements in major drainage <br />channels. However, floods larger than the 100-year can and do occur. <br /> <br />The 500-year flood data is included to illustrate potential hazards of a <br />very large flood event occurin::r in the community. Design of high risk <br />facilities such as those associated with the manufacture and storage of toxic <br />substances or explosives, or important public facilities such as power plants, <br />water or wastewater treatment plants, hospitals, nursing hones or schools should <br />consider the 500-year flood data contained herein. <br /> <br />The lesser 10- and 50-year events are included to provide information <br />relative to the design of lower risk facilities such as street crossings, park <br />improvenents, channel improvements, agricultural lands and similar floodplain <br />developnents. Typically, lower risk facilities are those where there is not a <br />substantial risk to life in the event of a flood. <br /> <br />Revised floodplain data is contained in Table 4 for Parachute Creek. <br />Floodplain data for the Colorado River is listed in Table 5. Flood elevations <br />are illustrated in prOfile in Figures 9 through 13, contained in the back of the <br /> <br />16 <br />