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<br />Zone C: <br /> <br />Areas of minimal flood hazard; not <br />subdivided. <br /> <br />Zone D: <br /> <br />Areas of undetermined, but possible <br />flood hazard. <br /> <br />5.4 Flood Insurance Rate Map Description <br /> <br />The Flood Insurance Rate Map for Ouray County is, for insurance <br />purposes, the principal product of the Flood Insurance Study. This <br />map contains the official delineation of flood insurance zones and <br />base flood elevations. Base flood elevation lines show the loca- <br />tions of the expected whole-foot water-surface elevation of the <br />base (lOO-year) flood. The base flood elevations and zone numbers <br />are used by insurance agents, in conjunction with structure eleva- <br />tions and characteristics, to assign actuarial insurance rates to <br />structures and contents insured under the NFIP. <br /> <br />6.0 OTHER STUDIES <br /> <br />This study was prepared from data used for the OUray County, Colorado, <br />FPI (Reference 1). This report contains information on historical <br />flooding, existing flood hazards, and potential future floods. A <br />Technical Addenda includes the supporting engineering and hydrologic <br />data and computations (Reference 9). <br /> <br />The U.S. Bureau of Reclamation completed a study in 1973 (Reference 10). <br />This report estimated streamflow in connection with possible pumping <br />station sites on the Uncompahgre River near Ridgway, Colorado. <br /> <br />A Flood Insurance Study for the City of Ouray, Colorado, is currently <br />being prepared (Reference 11) and is in agreement with this study. <br /> <br />A Flood Insurance Study is also being prepared for the City of Ridgway, <br />Colorado (Reference 12), and is in agreement with this study. <br /> <br />7.0 LOCATION OF DATA <br /> <br />Information concerning the pertinent data used in the preparation of <br />this study can be obtained by contacting the Natural and Technological <br />Hazards Division, FEMA, Building 710, Denver Federal Center, Lakewood, <br />Colorado 80225. <br /> <br />8.0 BIBLIOGRAPHY AND REFERENCES <br /> <br />1. A&S Consultants, Inc., Floodplain Information Report, Uncompahgre <br />River, Ouray to Dallas Creek, Ouray County, Colorado, prepared for <br />Ouray County and the Colorado Water Conservation Board, Denver, <br />Colorado, April 1978 <br /> <br />17 <br />