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Located within the special flood hazard areas established in § 152.04 are areas designated as shallow flooding areas. These areas have flood hazards associated with base flood depths of one (1) to three (3) feet, where a clearly defined channel does not exist and the water path of flooding is unpredictable and indeterminate. Therefore, the following provisions apply:
(A) All new construction and substantial improvements of residential structures shall: have the lowest floor, including basement, elevated to or above either the base flood elevation or in Zone AO the flood depth specified on the flood insurance rate map above the highest adjacent grade. In Zone AO, if no flood depth is specified, the lowest floor, including basement, shall be elevated no less than two (2) feet above the highest adjacent grade.
(B) All new construction and substantial improvements of non-residential structures shall:
(1) Have the lowest floor, including basement, elevated to or above either the base flood elevation or in Zone AO the flood depth specified on the flood insurance rate map, above the highest adjacent grade. In Zone AO, if no flood depth is specified, the lowest floor, including basement, shall be elevated no less than two (2) feet above the highest adjacent grade.
(2) Together with attendant utility and sanitary facilities, be completely flood- proofed either to the base flood elevation or above or, in Zone AO, to or above the specified flood depth plus a minimum of one (1) foot so that any space below that level is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. Certification is required as stated in § 152.31(B).
(Ord. 0-92-010, passed 4-27-92; Am. Ord. 0-2008-007, passed 1-28-08; Am. Ord. 0-2013-006, passed 3-25-13) Penalty, see § 152.99
(A) All subdivision proposals shall identify the flood hazard area and the elevation of the base flood and be consistent with the need to minimize flood damage;
(B) All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize flood damage;
(C) All subdivision proposals shall have adequate drainage provided to reduce exposure to flood hazards; and
(D) In areas where base flood elevation and floodway data is not available, base flood elevation and floodway data for subdivision proposals and other proposed development (including manufactured home parks and subdivisions) greater than fifty (50) lots or five (5) acres, whichever is the lesser, shall be provided.
(E) All subdivision plans will include the elevation of proposed structure(s) and lowest adjacent grade. If the site is filled above the base flood elevation, the lowest floor and lowest adjacent grade elevations shall be certified by a registered professional engineer or surveyor and provided to the Floodplain Administrator.
(Ord. 0-92-010, passed 4-27-92; Am. Ord. 0-2008-007, passed 1-28-08; Am. Ord. 0-2013-006, passed 3-25-13) Penalty, see § 152.99
For all accessory structures in special flood hazard areas designated “A” the following provisions shall apply:
(A) Must be non-habitable;
(B) Must be anchored to resist flotation and lateral movement;
(C) Must be provided with flood openings in accordance with the standards of § 152.31(C);
(D) Must be built of flood resistant materials to one (1) foot above the base flood elevation;
(E) Must elevate utilities one (1) foot above the base flood elevation;
(F) Can only be used for storage or parking; and
(G) Must not be modified for a different use after permitting.
(Ord. 0-2008-007, passed 1-28-08; Am. Ord. 0-2013-006, passed 3-25-13) Penalty, see § 152.99
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