(A) Only limited development in and/or filling of the flood fringe will be permitted if protection is provided against the base flood or 100-year frequency flood by proper elevation, and compensatory storage and other provisions of this chapter are met. No use will be permitted which adversely affects the capacity of drainage facilities or systems. No new structures or buildings with basements are permitted within the SFHA as determined by elevation from an FIS or detailed flood study. All buildable residential and nonresidential lots must be outside the SFHA for new development to minimize flood risk associated with base flood and higher magnitude floods. Subdivisions and Planned unit developments are required to obtain a Letter of Map Revision from FEMA in accordance with § 152.088. Permitted developments located within the flood fringe shall meet the requirements of this section, along with the requirements of §§ 152.080 through 152.087.
(B) If the BFE at the site of the proposed development is affected by backwater from a downstream receiving stream with a larger drainage area, the proposed development shall be shown to meet the requirements of this chapter with the receiving stream at both the normal water and BFEs.
(C) If the applicant is informed by IDNR-OWR, local governments, or a private owner that a downstream or upstream restrictive bridge or culvert is scheduled to be removed, reconstructed, modified, or a regional flood control project is scheduled to be built, removed, constructed or modified within the next five years, the proposed development shall be analyzed and shown to meet the requirements of this chapter for both the existing conditions and the expected flood profile conditions when the bridge, culvert or flood control project is built, removed or modified as applicable.
(Ord. 3187, passed 1-22-19)