A.   Permit Required: A permit must be obtained from the Zoning Administrator to verify a development meets the standards outlined in this chapter prior to conducting the following activities:
      1.   The erection, addition, modification, rehabilitation, or alteration of any building, structure, or portion thereof. Normal maintenance and repair also requires a permit if such work, separately or in conjunction with other planned work, constitutes a substantial improvement as defined in this chapter.
      2.   The use or change of use of a building, structure, or land.
      3.   The construction of a dam, on-site septic system, or fence, although a permit is not required for a farm fence as defined in this chapter.
      4.   The change or extension of a nonconforming use.
      5.   The repair of a structure that has been damaged by flood, fire, tornado, or any other source.
      6.   The placement of fill, excavation of materials, or the storage of materials or equipment within the floodplain.
      7.   Relocation or alteration of a watercourse (including new or replacement culverts and bridges), unless a public waters work permit has been applied for.
      8.   Any other type of "development" as defined in this chapter.
   B.   Building Sites: If a proposed building site is in a flood prone area, all new construction and substantial improvements (including the placement of manufactured homes) must be:
      1.   Designed (or modified) and adequately anchored to prevent flotation, collapse, or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy;
      2.   Constructed with materials and utility equipment resistant to flood damage;
      3.   Constructed by methods and practices that minimize flood damage; and
      4.   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.
   C.   Flood Capacity: In no cases shall floodplain development adversely affect the efficiency or unduly restrict the capacity of the channels or floodways of any tributaries to the main stream, drainage ditches, or any other drainage facilities or systems.
   D.   Storage Or Processing Of Materials: The storage or processing of materials that are, in time of flooding, flammable, explosive, or potentially injurious to human, animal, or plant life is prohibited.
   E.   Critical Facilities: Critical facilities, as defined in subsection 12-1-2F of this chapter, are prohibited in all floodplain districts. (Ord. 2017-009, 7-18-2017)