§ 7-5.609. Floodways.  


Latest version.
  • Located within SFHAs, established in Section 7-5.302, are areas designated as floodways. The regulatory floodway shown in the Flood Insurance Study has been selected and adopted on the principle that the area chosen for the regulatory floodway must be designed to carry the waters of the base flood without increasing the water surface of that flood more than one (1) foot at any point. In accordance with this principle, and the fact that the floodway is an extremely hazardous area due to the velocity of flood waters which carry debris, potential projectiles, and erosion potential, the following provisions apply:

    (a)

    Prohibit encroachments, including fill, new construction, substantial improvement, and other new development unless certification by a registered professional engineer or architect is provided demonstrating that encroachments shall not result in any increase in flood levels during the occurrence of the base flood discharge;

    (b)

    If Section 7-5.608(a) of this section is satisfied, all new construction, substantial improvement, and other proposed new development shall comply with all other applicable flood hazard reduction provisions of Article 6.

    (c)

    All new construction, substantial improvements, and other development within floodways which will cause increases in the BFE shall only be permitted if the permittee has applied to the Federal Emergency Management Agency for modification of the flood insurance rate maps and has received conditional approval of such modifications, and all other applicable provisions of this chapter are satisfied.

    (d)

    If no floodway is identified, the applicant for a flood area development permit shall provide an engineering study to demonstrate that any new development will not increase the water surface elevation of the base flood by more than one-tenth of one foot.

(§ 1 (Exh. A), Ord. No. 1268, eff. April 20, 2017)