(A) Anchoring. All buildings or structures shall be firmly anchored to prevent flotation, collapse, or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy.
(B) Building materials and utilities.
(1) All buildings or structures shall be constructed with materials and utility equipment resistant to flood damage. All buildings or structures shall also be constructed by methods and practices that minimize flood and flood-related damages.
(2) All buildings or structures shall be constructed with electrical, heating, ventilation, plumbing, air conditioning equipment, and other service facilities that are designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.
(C) Drainage. Within Zones AO and AH, adequate drainage paths around structures on slopes shall be required in order to guide floodwaters around and away from proposed structures.
(D) Water supply and sanitary sewer systems.
(1) All new or replacement water supply and sanitary sewer systems shall be located, designed, and constructed to minimize or eliminate flood damages to such systems and the infiltration of floodwaters into the systems.
(2) All new or replacement sanitary sewage systems shall be designed to minimize or eliminate discharge from the system into floodwaters.
(3) On-site waste disposal systems shall be located and designed to avoid impairment to them or contamination from them during flooding.
(4) New or replaced septic systems in floodplains are prohibited.
(E) Other utilities. All other utilities such as gas lines, electrical, telephone, and other utilities shall be located and constructed to minimize or eliminate flood damage to such utilities and facilities.
(F) Storage of materials.
(1) The storage or processing of materials that are in time of flooding buoyant, flammable, explosive, or could be injurious to human, animal, or plant life is prohibited.
(2) The storage of other material or equipment may be allowed if not subject to major damage by floods and firmly anchored to prevent flotation or if readily removable from the area within the time available after flood warning.
(G) Recreational vehicles. Recreational vehicles to be placed on sites within the floodplain shall:
(1) Be on site for fewer than 180 consecutive days;
(2) Be fully licensed and ready for highway use, which shall mean it is on its wheels or jacking system, is attached to the site by only quick-disconnect type utilities and security devices, and no permanently attached additions; or
(3) Meet the permit requirements and the elevation and anchoring requirements for manufactured homes of this chapter.
(H) Subdivisions. Subdivision proposals and other proposed new development, including manufactured home parks or subdivisions, shall require assurance that:
(1) All such proposals are consistent with the need to minimize flood damage;
(2) All public utilities and facilities such as sewer, gas, electrical, and water systems are located, elevated, and constructed to minimize or eliminate flood damage;
(3) Adequate drainage is provided so as to reduce exposure to flood hazards; and
(4) Proposals for development (including proposals for manufactured home parks and subdivisions) of five acres or 50 lots, whichever is less, where base flood elevation data are not available, shall be supported by hydrologic and hydraulic analyses that determine base flood elevations and floodway information. The analyses shall be prepared by a licensed professional engineer in a format required by FEMA for Conditional Letters of Map Revision and Letters of Map Revision.
(Ord. 687, passed 7-23-24)