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(A) The flood prone designation on the City of Mora Flood Prone Areas Map must not be removed unless it can be shown that the designation is in error or that conditions have changed resulting from development or flood control and drainage projects and it can be demonstrated that the land is no longer susceptible to being inundated by water from any source. Special exceptions to this rule may be permitted by the City of Mora if it is determined that, through other measures, lands are adequately protected for the intended use.
(B) The City of Mora may, from time to time or upon request, review the City of Mora Flood Prone Areas Map in order to adjust for changed conditions.
(C) An application for map amendment shall be obtained from and submitted to the Community Development Director. All amendments to the map shall be reviewed by the Planning Commission and approved by the City Council.
(Ord. 481, passed 2-16-2021)
LAND DEVELOPMENT STANDARDS
No land may be subdivided which is unsuitable for reasons of flooding or inadequate drainage, water supply or sewage treatment facilities. Manufactured home parks and recreational vehicle parks or campgrounds are considered subdivisions under this chapter.
(A) All lots within the flood plain districts must be able to contain a building site outside of the Floodway District at or above the regulatory flood protection elevation.
(B) All subdivisions must have road access both to the subdivision and to the individual building sites no lower than two (2) feet below the regulatory flood protection elevation, unless a flood warning emergency plan for the safe evacuation of all vehicles and people during the regional one percent (1%) chance flood has been approved by the City Council. The plan must be prepared by a registered engineer or other qualified individual, and must demonstrate that adequate time and personnel exist to carry out the evacuation.
(C) For all subdivisions in the Flood Plain, the Floodway and Flood Fringe District boundaries, the regulatory flood protection elevation and the required elevation of all access roads must be clearly labeled on all required subdivision drawings and platting documents.
(D) In the General Flood Plain District, applicants must provide the information required in § 152.061 of this chapter to determine the regional flood elevation, the Floodway and Flood Fringe District boundaries and the regulatory flood protection elevation for the subdivision site.
(E) All proposals must be reviewed to assure that:
(1) All such proposals are consistent with the need to minimize flood damage within any area susceptible to flood risk;
(2) All public utilities and facilities, such as sewer, gas, electrical, and water systems are located and constructed to minimize or eliminate flood damage; and
(3) Adequate drainage is provided to reduce exposure of flood hazard.
(Ord. 481, passed 2-16-2021)
If a proposed building site is in a flood prone area, all new construction, including the placement of manufactured homes, must be:
(A) Designed (or modified) and adequately anchored to prevent floatation, collapse, or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy.
(B) Constructed with materials and utility equipment resistance to flood damage.
(C) Constructed by methods and practices that minimize flood damage.
(D) Constructed with electrical, heating, ventilation, plumbing, and 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.
(E) Approved by the City Engineer.
(Ord. 481, passed 2-16-2021)
UTILITIES, RAILROADS, ROADS, AND BRIDGES
All public utilities and facilities such as gas, electrical, sewer, and water supply systems to be located in the flood plain must be flood proofed in accordance with the State Building Code or elevated to the regulatory flood protection elevation.
(Ord. 481, passed 2-16-2021)
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