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<br />10( <br /> <br />100-YEAR FL00DPLAIN <br /> <br />-I <br /> <br />... <br /> <br />FLOODWAY <br />FRINGE <br /> <br />" <br /> <br />FLOODWAY <br /> <br />fLOODWAX <br />FRINGE <br /> <br />STREAM _ <br />CHANNEL <br /> <br />FLOOD ELEVATION WHEN <br />CONFINED WITHIN FLOODWAY <br /> <br /> <br />ENCROACHMENT <br /> <br />AREA OF FLOODPLAIN THAT COULD BE USED <br />FOR DEVELOPMENT BY RAISING GROUND <br /> <br /> <br />ENCROACHMENT <br />D <br />. <br /> <br />SURCHARGE * <br /> <br />---- <br /> <br />FLOOD ELEVATION BEFORE <br />ENCROACHMENT ON FLOODPLAIN <br /> <br />LINE AB IS THE FLOOD ELEVATION BEFORE ENCROACHMENT.! <br />LINE CD IS THE FLOOD ELEVATION AFTER ENCROACHMENT. <br />'SURCHARGE IS NOT TO EXCEED 1.0 FOOT (FIA REQUIREMENT) OR LESSER AMOUNT IF SPECIFIED BY STATE. <br /> <br />Figure 2. Floodway Schematic <br /> <br />5.0 INSURANCE APPLICATION <br /> <br />For flood insurance rating purposes,' flood insurance zone designations <br />are assigned to a community based on the results of the e,ngineering <br />analyses. These zones are as follows: <br /> <br />Zone A <br /> <br />Zone A is the flood insurance rate zone that corresponds to the <br />lOO-year floodplai us determined, in the Flood Insurance Study by <br />approximate methods. Because dejtai led hydraul ic analyses are not <br />performed for such areas, no base flood elevations or depths are <br />shown within this zone. ' <br /> <br />ZOne AE <br /> <br />Zone AE is the flood insurance irate zone that corresponds to the <br />lOO-year floodplains determined i in the Flood Insurance Study by <br />detailed methods. Whole-foot b,1se flood elevations derived from <br />the detailed hydraulic analyse~ are shown at selected intervals <br />within this zone. <br /> <br />22 <br />