(A) When special flood hazard areas have been provided by FEMA on flood insurance rate maps, but base flood elevations have not been provided, the Floodplain Administrator shall:
(1) Require that a base flood elevation be generated whenever development is proposed on greater than 50 lots or five acres (whichever is the lesser); or
(2) If 50 lots or less, or five acres or less (whichever is the lesser), obtain, review, and reasonably utilize scientific or historic base flood elevation and floodway data available from a federal, state, or other source, in order to administer this chapter. If base flood elevations are not available, and are not required to be generated, division (C) below shall apply.
(C) In special flood hazard areas without base flood elevations, the following shall apply:
(1) No encroachments, including structures or fill, shall be located in an area of special flood hazard within an area equal to the width of the stream or 50 feet, whichever is greater, measured from the ordinary high water mark, unless a base flood elevation is developed by a licensed professional engineer; or
(2) The lowest floor of any building or structure, including the bottom of the longitudinal chassis frame beam of the manufactured dwelling, shall be elevated a minimum of three feet above highest adjacent grade. Below grade crawlspaces are prohibited.
(Ord. 527, passed 1-14-2013)