(1) In all special flood hazard areas where base flood elevation data has been provided in accordance with SCC 30.65.040, or where the county can reasonably utilize base flood elevation data available from federal, state or other sources, the specific flood hazard protection standards of SCC 30.65.120 and SCC 30.65.230 shall be required.

(2) In all special flood hazard areas where base flood elevation data has not been provided, the county shall review all development proposals in accordance with SCC 30.65.110 general standards and SCC 30.65.120 specific standards and shall require compliance with the standards of said sections as necessary to assure that development will be reasonably safe from flooding. The test of reasonableness shall include use of historic data, high water marks, photographs of past flooding, etc., where available. New construction and substantial improvement of any residential or nonresidential structure in an Unnumbered A zone for which a base flood elevation is not available shall have the lowest floor, including basement, elevated a minimum of two feet above the highest adjacent grade.

(3) In areas where base flood elevation data has been provided, when a regulatory floodway has not been designated, no new construction, substantial improvements, or other development (including fill) shall be permitted within AE zoned areas on the applicable FIRM, unless the applicant demonstrates that the cumulative effect of the proposed development, when combined with all other existing and anticipated development, will not increase the water surface elevation of the base flood more than one foot at any point within the jurisdiction of the county. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003; Amended by Amended Ord. 07-005, Feb. 21, 2007, Eff date Mar. 4, 2007; Amended by Ord. 20-076, Nov. 4, 2020, Eff date Nov. 27, 2020).