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<br />Zone A: <br /> <br />Special Flood Hazard Areas inundated by <br />the 100-year flood, determined by <br />approximately methods; no base flood <br />elevations shown or FHFs determir~d. <br /> <br />Zone A4: <br /> <br />Special Flood Hazard Areas inundated by <br />the lOa-year flood; with base flood <br />elevations shown, and zones subdivided <br />according to FHFs. <br /> <br />Zone B: <br /> <br />Areas between the Special Flood Hazard <br />Areas and the limits of the SOD-year <br />flood; areas that are protected from <br />the 100- or SOO-year floods by dike, <br />levee, or other local water-control <br />structure; areas subject to certain <br />types of 100-year shallow flooding where <br />depths are less than 1.0 foot; and areas <br />subject to 100-year flooding from sources <br />with drainage areas less than 1 square <br />mile. Zone B is not subdivided. <br /> <br />Zone C: <br /> <br />Areas of minimal flood hazard; not sub- <br />divided. <br /> <br />5.4 Flood Insurance Rate Map Description <br /> <br />The Flood Insurance Rate Map for Ridgway is, for insurance purposes, <br />the principal product of the Flood Insurance Study. This map con- <br />tains the official delineation of flood insurance zones and base <br />flood elevations. Base flood elevation lines show the locations <br />of the expected whole-foot water-surface elevation of the base <br />(laO-year) flood. The base flood elevations and zone numbers are <br />used by insurance agents, in conjunction with structure elevations <br />and characteristics, to assign actuarial insurance rates to struc- <br />tures and contents insured under the NFIP. <br /> <br />6.0 OTHER STUDIES <br /> <br />The Floodplain Information Report for OUray County, Colorado (Reference 1), <br />is in general agreement with this study. <br /> <br />A study completed by the U.S. Bureau of Reclamation for estimating stream- <br />flow in connection with possible pumping station sites on Uncompahgre <br />River (Reference 12) is in general agreement with or is superseded by <br />th is study. <br /> <br />A Flood Insurance Rate Map has been prepared for the Town of Ridgway <br />[Reference 11). Because of the more detailed nature of this study, it <br />supersedes the Flood Insurance Rate Map. <br /> <br />12 <br />