Laserfiche WebLink
<br />Zone AE <br /> <br />Zone AE is the flood insurance rate zone that corresponds to the <br />lOO-year flood plains that are determined in the Flood Insurance <br />Study by detailed methods. Whole-foot base flood elevations derived <br />from the detailed hydraulic analyses are shown at selected intervals <br />within this zone. <br /> <br />Zone X <br /> <br />Zone X is the flood insurance rate zone that corresponds to areas <br />outside the 500-year flood plain, areas within the 500-year flood <br />plain, areas of laO-year flooding where average depths are less <br />than l foot, areas of 100-year flooding where the contributing <br />drainage area is less than I square mile, and areas protected from <br />the lOa-year flood by levees. No base flood elevations or depths <br />are shown within this zone. <br /> <br />6. 0 FLOOD INSURANCE RATE MAP <br /> <br />The Flood Insurance Rate Map is designed for flood insurance and flood <br />plain management applications. <br /> <br />For flood insurance applications, the map designates flood insurance <br />rate zones as described in Section 5.0 and, in the lOa-year flood plains <br />that were studied by detailed methods, shows selected whole-foot base <br />flood elevations or average depths. Insurance agents use the zones and <br />base flood elevations in conjunction with information on structures and <br />their contents to assign premium rates for flood insurance policies. <br /> <br />For flood plain management applicationa, the map shows by tints, screens, <br />and symbols, the 100- and 500-year flood plains, the floodways, and the <br />locations of selected cross sections uaed in the hydraulic analyses and <br />floodway computations. <br /> <br />7.0 OTHER STUDIES <br /> <br />Several other flood studies have been completed for Douglas County streams. <br />Flood hazard area delineations for Piney, Cottonwood, Lane Tree, and <br />Murphy Creeks (References 18, 21, and 35) were completed by Gingery <br />Associates in October 1975 for UDFCD. The 10- and 50-year flood dis- <br />charges are calculated and the 100-year profile and flood plain limits <br />are shown. <br /> <br />Major Drainageway Planning, Little Dry Creek (Reference 36), prepared <br />for UDFCD by McCall-Ellingson and MOrrill, Inc., was completed in <br />February 1974 and ahows the 100-year flood plain boundary and water- <br />surface profile. <br /> <br />54 <br />