The provisions for the General Floodplain District shall apply to development in all floodplains mapped as A, AO, AH, and in AE zones within which a floodway is not delineated on the Flood Insurance Rate Maps identified in §
21.06.010B.1.
For proposed development in zone A, or in zone AE within which a floodway is not delineated on the Flood Insurance Rate Map identified in §
21.06.010B.1, the boundaries of the regulatory floodway shall be determined pursuant to §
21.14.050. If the development is proposed to encroach upon the regulatory floodway, the development is subject to the standards of Ch.
21.12. If the development is located entirely within the floodfringe, the development is subject to the standards of Ch.
21.13.
Pursuant to §
21.14.050 it shall be determined whether the proposed use is located within the floodway or floodfringe. Those uses permitted in the Floodway (§ 21.12.02) and Floodfringe (§ 21.13.02) Districts are allowed within the General Floodplain District, according to the standards of §
21.14.040 provided that all permits or certificates required under Ch.
21.17 have been issued.
Chapter
21.12 applies to floodway areas, determined to pursuant to §
21.14.050. Ch.
21.13 applies to floodfringe areas, determined to pursuant to §
21.14.050.
A. New construction and substantial improvement of structures in zone
AO shall have the lowest floor, including basement, elevated:
1.
To or above the depth, in feet, as shown on the FIRM above the
highest adjacent natural grade; or
2.
If the depth is not specified on the FIRM, to or above two feet
above the highest adjacent natural grade.
B. New construction and substantial improvement of structures in zone
AH shall have the lowest floor, including basement, elevated to or
above the flood protection elevation.
C. In AO/AH zones, provide adequate drainage paths to guide floodwaters
around structures.
D. All development in zones AO and zone AH shall meet the requirements of Ch.
21.13 applicable to flood fringe areas.
Upon receiving an application for development within zone A,
or within zone AE where a floodway has not been delineated on the
Flood Insurance Rate Maps, the Zoning Administrator shall:
A. Require the applicant to submit two copies of an aerial photograph
or a plan which shows the proposed development with respect to the
general floodplain district limits, stream channel, and existing floodplain
developments, along with a legal description of the property, fill
limits and elevations, building floor elevations and flood proofing
measures; and the flood zone as shown on the FIRM;
B. Require the applicant to furnish any of the following information
deemed necessary by the Department to evaluate the effects of the
proposal upon flood height and flood flows, regional flood elevation
and to determine floodway boundaries:
2.
Plan (surface view) showing elevations or contours of the ground;
pertinent structure, fill or storage elevations; size, location and
layout of all proposed and existing structures on the site; location
and elevations of streets, water supply, and sanitary facilities;
soil types and other pertinent information;
3.
Specifications for building construction and materials, floodproofing,
filling, dredging, channel improvement, storage, water supply and
sanitary facilities.