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<br />I ( <br /> <br />100- YEAR FLOODPLAIN <br /> <br />-I <br /> <br />~ <br /> <br />FLOODWAY <br />FRINGE <br /> <br />. <br /> <br />FLOODWAY <br /> <br />LOODWAY <br />FRINGE <br /> <br />STREAM <br />CHANNEL <br /> <br />FLOOD ELEVATION WHEN <br />(ONFINEDWITHIN FLOODWAY <br /> <br /> <br />ENCROACHMENT <br /> <br />ENCROACHME~T <br /> <br />................ .......... <br />............. ........... <br /> <br /> <br />AREA OF FLOODPLAIN THAT COULD BE USED FOR <br />DEVELOPMENT BY RAISING GROUND <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 $TA TE. <br /> <br />Figure 17. 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 engineering <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 floodplains that are determined in the Flood Insqrance <br />Study by approximate methods. Because detailed hydraulic analyses <br />are not performed for such areas, no base flood elevations or <br />depths are shown within this zone. <br /> <br />65 <br />