Elevation. The following standards, in addition to the standards in §
115-14, Subsection A, Subdivision proposals, and Subsection B, Encroachments, and §
115-15, Standards for all structures, apply to structures located in areas of special flood hazard as indicated:
(1)
Within Zones A1-A30, AE and AH and also Zone A if base flood elevation
data are available, new construction and substantial improvements
shall have the lowest floor (including basement) elevated at least
two feet above the base flood level.
(2)
Within Zone A, when no base flood elevation data are available, new
and substantially improved structures shall have the lowest floor
(including basement) elevated at least three feet above the highest
adjacent grade.
(3)
Within Zone AO, new and substantially improved structures shall have the lowest floor (including basement) elevated at least two feet above the adjacent grade at least as high as the depth number specified in feet on the community's Flood Insurance Rate Map enumerated in §
115-6 (at least two feet if no depth number is specified).
(4)
Within Zones AH and AO, adequate drainage paths are required to guide
floodwaters around and away from proposed structures on slopes.
