Located within the areas of special flood hazard established in § 154.07, where small streams exist but where no base flood data have been provided or where no floodways have been provided, the following provisions apply:
(A) No encroachments, including fill material or structures, shall be located within a distance of the stream bank equal to two times the width of the stream at the top of the bank or 20 feet each side from the top of the bank, whichever is greater, unless certification by a registered professional engineer is provided demonstrating that such encroachments shall not result in any increase in flood levels during the occurrence of the base flood discharge.
(B) New construction or substantial improvements of structures shall be elevated or floodproofed to elevations established in accordance with § 154.30(B)(11).
(Ord. 347, passed 3-10-87) Penalty, see § 154.99