Sec. 27-247.  Standards for the floodway overlay district and the floodway fringe overlay district.

(a)   No permit for development shall be granted for new construction, substantial improvement and other improvements including the placement of manufactured home dwellings within the identified flood plain unless the conditions of this section are satisfied.

(b)   All areas identified as unnumbered A Zones by the Federal Insurance Administration are subject to inundation of the 100-year flood; however, the water surface elevation was not provided.  The unnumbered A Zones shall be subject to all development provisions of this division.  If flood insurance study data is not available, the community shall utilize any base flood elevation data currently available within its area of jurisdiction.

(c)   New construction, subdivision proposals, substantial improvements, prefabricated buildings, placement of manufactured home dwellings and other developments shall require:

(1)       Design or anchorage to prevent flotation, collapse or lateral movement due to flooding.

(2)       New or replacement water supply systems and/or sanitary sewage systems be designed to minimize or eliminate infiltration of flood waters into the systems and discharges from the systems into flood waters, and on-site waste disposal systems be located so as to avoid impairment or contamination.

(3)       Construction with materials resistant to flood damage, utilizing methods and practices that minimize flood damages, and with electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities that are designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.

(4)       All utility and sanitary facilities be elevated or floodproofed one foot above the regulatory flood protection elevation.

(5)       That until a floodway has been designated, no development including landfill, may be permitted within the identified flood plain unless the applicant for the land use has demonstrated that the proposed use, when combined with all other existing and reasonably anticipated uses, will not increase the water surface elevation of the 100-year flood more than one (1) foot on the average cross section of the reach in which the development or landfill is located.

(6)       Storage of material and equipment.

a.         The storage or processing of materials that are in time of flooding buoyant, flammable, explosive, or could be injurious to human, animal or plant life is prohibited.

b.         Storage of other material or equipment may be allowed if not subject to major damage by floods and firmly anchored to prevent flotation or if readily removable from the area within the time available after flood warning.

(7)       Subdivision proposals and other proposed new development, including mobile home parks or subdivisions, be required to assure that (a) all such proposals are consistent with the need to minimize flood damage, (b) all public utilities and facilities, such as sewer, gas, electrical, and water systems are located, elevated and constructed to minimize or eliminate flood damage, (c) adequate drainage is provided so as to reduce exposure to flood hazards, and (d) proposals for development (including proposals for mobile home parks and subdivisions) of five (5) acres or fifty (50) lots, whichever is lesser, include within such proposals the regulatory flood elevation. 

Source:  Ord. No. 4603, § 1, 9-16-02