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Portsmouth, Virginia, Code of Ordinances: PART II -CODE - Ghapter 14.1 FLOOD PROTEGTION (1) The Floodway District is in an AE Zone and is delineated, far purposes of this ordinance, using the criterion that certain areas within the floodplain must be capable of carrying the waters of the one {1}percent annual chance flood without increasing the water surface elevation of that flood more than one {1) foot at any paint. The areas included in this District, if any, are shown on the FIRM. Currently, according to the above-referenced FIRM (August 3, Zt?15}, there are no floadways designated In the latest Portsmouth FIS. (2) The AE or AH Zones on the FIRM accompanying the FIS shall be those areas for which one- percent annual chance flood elevations have been provided and the floodway has not been delineated. (3) The A Zone on the FIRM accompanying khe FIS shat( be those areas for which no detailed flood profiles ar elevations are provided, but the one percent annual chance floadplain boundary has been approximated. (4) The AO Zane on the FIRM accompanying the FIS shall be those areas of shallow flooding identified as AO on the FIRM. (5} The Coastal A Zone shall be those areas, as defined by the VA USBC, that are subject to wave heights between 1.5 and 3 feet, and identified on the FIRM as areas between the V zone and the Limit of Moderate Wave Action (LiMWA}. (6) The VE or V Zones on the FIRMS accompanying the FIS shall be those areas that are known as Coastal High Hazard areas, extending from offshore to the inland limit of a primary frontal dune along an open coast and any other area subject to high velocity (3 foot and higher} wave action: {b) Overlay concept. (1) The Floodplain Districts described above shall be in addition to and shall overlay all other zoning districts designated on the Official Zoning Ordinance Map as adopted by section 40.1 of this Code. The provisions far the Floodplain Districts shall serve as a supplement to the underlying district provisions. (2) In any conflict between the Cade requirements far the Floodplain Districts and those for any underlying zoning district, the more restrictive provisions andlor those pertaining to the Floodplain Districts shall apply. (3) In the event any provision concerning a Floodplain District is declared inapplicable as a result of any legislative or administrative actions or judicial decision, the basic underlying provisions shall remain applicable. Sec. 14.1-7, -Official zoning map. The boundaries of the Floodplain Districts are established as shown on the Flood Insurance Rate Map, which is declared to be a part of this chapter and which shall be kept on file in the office of the Department of Neighbofiood Advancement. Sec. 14.1-8. -District boundary changes. 1 t)