(A) All Zone A areas on the FIRM are subject to inundation of the base flood; however, the base flood elevations are not provided. Zone A areas shall be subject to all development provisions of this article. If Flood Insurance Study data is not available, the city shall utilize any base flood elevation or floodway data currently available from federal, state, or other sources, including from a study commissioned by the applicant pursuant to best technical practices.
(B) Until a floodway has been designated, no development or substantial improvement may be permitted within the floodplain unless the applicant has demonstrated that the proposed development or substantial improvement, when combined with all other existing and reasonably anticipated developments or substantial improvements, will not increase the water surface elevation of the base flood more than one foot at any location as shown in the Flood Insurance Study or on base flood elevation determinations.
(Ord. 4293, passed 11-7-2022)