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<br />Ie <br /> <br />100-YEAR FLOODPLAIN <br /> <br />~I <br /> <br />__ FLOODWAY <br />fRINGE <br /> <br />4 <br /> <br />FLOODWAY <br /> <br />LOODWAY <br />FRINGE <br /> <br />STREAM _ <br />CHANNEL <br /> <br />FLOOD ELEVATION WHEN <br />CONfiNED WITHIN FLOODWAY <br /> <br />. <br /> <br /> <br />ENCROACHMENT <br /> <br />ENCROACHMENT <br /> <br />AREA OF FLOODPLAIN THAT COULD BE USED <br />FOR DEVELOPMENT BY RAISING GROUND <br /> <br /> <br />D <br />. <br /> <br />. <br /> <br />SURCHARGE. <br /> <br />FLOOD ELEVATION BEFORE <br />ENCROACHMENT ON FLOODPLAIN <br /> <br />LINE AS IS THE FLOOD ELEVATION BEFORE ENCROACHMENT. <br />LINE CD IS THE FLOOD ELEVATION AFTER ENCROACHMENT. <br />.SURCHARGE IS NOT TO EXCEED '-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 conununity based on the results of the engineering <br />analyses. These zones are as follows: <br /> <br />Zone A <br /> <br />., <br /> <br />Zone A is the flood insurance rate zone that corresponds to the <br />lOa-year floodplains determined in the Flood Insurance Study by <br />approximate methods, Because detailed hydraulic 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 rate zone that corresponds to the <br />lOa-year floodplains determined in the Flood Insurance Study by <br />detailed methods, Whole-foot base flood elevations derived from <br />the detailed hydraulic analyses are shown at selected intervals <br />within this zone. <br /> <br />53 <br />