2009.10.05 ORD 2009-434 - Laserfiche WebLink

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as fill, excavation, or the storage of materials and supplies, so long as such use is a permitted accessory use in the underlying zoning district. The use must not increase any stage of the 100 - year regional flood or cause an increase in flood damages in the reach or reaches affected. (3) Conditional uses. Any permitted, accessory, or conditional use allowed in the underlying zoning district may be allowed as a conditional use in the general floodplain district subject to the conditions established in subsection (4) of this section. (4) Standards for floodplain district conditional uses. a. No structure, facility, or land use shall be allowed in the floodway that will increase the stage of the 100 -year regional flood or cause an increase in flood damages in the reach or reaches affected, except for railroads, essential government facilities, accessory structures for public and private recreational facilities, essential utilities, marinas, docks, and other water -oriented accessory structures. b. No use shall result in obstruction to, or be incompatible with, preservation of those natural land forms, vegetation, and wetland areas contiguous to watercourses in the city where such use will detract from consistent rates of water flow. c. No use shall be permitted that results in development of land or water areas necessary to temporarily store excessive amounts of surface water during periods of floodwater or high water, or of groundwater recharge areas, where such development may decrease the capacity of such areas to temporarily store surface waters or to provide groundwater infiltration. d. The use must meet the construction standards found in subsection (5) of this section. e. Storage of material and equipment may be allowed below the regulatory flood protection elevation if readily removable from the area within the time available after a flood warning, and in accordance with a plan approved by the city council. f. Commercial, recreational, and accessory uses may be allowed only where an adequate flood warning system exists to allow evacuation of areas to be flooded prior to their inundation. g. Industrial uses may be permitted in the floodplain district only when adequate procedures are in place to limit flood interference with normal plant operations. h. Temporary, on-site storage of fill or other material may be allowed that would increase the stage of the 100 -year or regional flood if a specific and detailed removal plan for the material is accepted by the city council. The applicant shall be required to post financial security in an amount not less than 125 percent of the cost of removing the material, and provide proof of liability insurance as necessary to indemnify the city for any potential damage to public or private property caused from possible increased flooding. FIX