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<br />Descriptive Attribute Codes (continued) <br /> <br />Kaj or Minor <br />Code Code Descriotor <br />440 0621 NAVD 88 <br />440 0622 Other <br /> Vertical Datum <br />440 0710 Floodway <br /> <br />440 <br /> <br />0712 <br /> <br />Flow Easement <br /> <br />440 <br /> <br />0713 <br /> <br />State <br />Encroachment <br />Area <br /> <br />Parameter Attribute Codes <br /> <br />441 <br /> <br />Elevation <br /> <br />10/93 <br /> <br />Conunents <br /> <br />Preceding unit values are referenced to the <br />North American Vertical Datum of 1988. <br /> <br />Preceding unit values are referenced to a <br />vertical datum other than NGVD 29 or NAVD 88. <br /> <br />This code identifies an area that includes <br />the channel of a river or other watercourse <br />and the adjacent land areas that must be <br />reserved in order to discharge the base flood <br />without cumulatively increasing the water- <br />surface elevation by more than a designated <br />height. It is shown by FIS symbol AI07. <br />(Note: This area is normally in Zone AE; <br />therefore, attribute code 440 0153 will also <br />normally be used with this feature.) <br /> <br />This code identifies an area within a <br />community, usually bordering a stream, that <br />has more restrictive floodplain development <br />criteria imposed upon it by the governing <br />body (town, city, etc.) than the criteria <br />imposed as a prerequisite to participation in <br />the NFIP. It is shown by FIS spnbol Al12. <br />(Note: Unlike the floodway, this area may <br />overlap any other flood zone, and will <br />normally be associated with the attribute <br />code for that zone). <br /> <br />This code identifies an area within a <br />community, usually bordering a stream, that <br />has more restrictive floodplain development <br />criteria imposed upon it by the state, than <br />the criteria imposed as a prerequisite to <br />participation in the NFIP. It is shown by <br />Frs symbol L220. (Note: Unlike the <br />floodway, this area may overlap any other <br />flood zone, and will normally be associated <br />with the attribute code for that zone). <br /> <br />Right justified; 4 digits. Must be followed <br />by descriptive codes identifying its units of <br />measure and vertical datum. <br /> <br />47 <br />