§ 90-73. Standards for AO zones.

Located within the areas of special flood hazard established in section 90-28, are areas designated as shallow flooding areas. These areas have flood hazards associated with base flood depths of one to three feet, where a clearly defined channel does not exist and the path of flooding is unpredictable and indeterminate; therefore, the following provisions, in addition to section 90-70, shall apply:

(1)

All new construction and substantial improvements of residential structures in all AO zones shall have the lowest floor, including basement, elevated above the highest adjacent grade at least as high as the depth number specified in feet on the flood insurance rate map plus one foot. If no flood depth number is specified, the lowest floor, including basement, shall be elevated to no less than three feet above the highest adjacent grade.

(2)

All new construction and substantial improvements of nonresidential structures shall:

a.

Have the lowest floor, including basement, elevated above the highest adjacent grade at least as high as the depth number specified in feet on the flood insurance rate map. If no flood depth number is specified, the lowest floor, including basement, shall be elevated to at least three feet above the highest adjacent grade, or

b.

Together with attendant utility and sanitary facilities be completely floodproofed to no less than one foot above that level to meet the floodproofing standard specified in section 90-73(2)(a).

(3)

Adequate drainage paths around structures shall be provided on slopes to guide water away from structures.

(4)

Fully enclosed areas below the lowest floor that are subject to flooding shall meet the nonelevation design requirements of section 90-71.

(Ord. No. 09-65, § I, 10-22-09)