Chapter 27 Flood Plain Management

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FLOODPLAIN MANAGEMENT § 27-24 (3) Contour map showing the topography of existing ground based on elevation reference marks on flood maps. The scale and contours are to be appropriate to the work in question. (4) Existing and proposed base flood elevations. (5) Existing and proposed floodproofing and flood control measures. The director of public works may waive informational requirements if the director of public works has sufficient information to make an evaluation and determination regarding flood elevation or may request further information, including a detailed flood elevation study and a drainage report, to evaluate flood risks and determine the applicability of flood construction and development standards. (d) New construction, improvements to repetitive loss structures, and substantial improvements within the general floodplain shall satisfy the requirements set forth for Zones AE, AH, AO, or VE as is determined to be applicable by the director of public works based on base flood information and floodway data obtained through subsections 27-24(a) and 27-24(b). (e) All new construction, improvements to repetitive loss structures, development, and substantial improvement within the general floodplain shall be certified as required by section 27-17. (f) All manufactured homes shall be elevated and anchored to resist flotation, collapse, or lateral movement. (1993, ord 93-78, sec 3; am 2001, ord 01-108, sec 1; am 2007, ord 07-169, sec 15.) Section 27-25. Standards for improvements adjacent to drainage facilities. New construction, improvements to repetitive loss structures, and substantial improvements proposed adjacent to drainage facilities outside of the special flood hazard areas identified on the Flood Insurance Rate Maps shall be subject to review and approval of the director of public works. (a) Upon request by the director of public works, further information concerning base flood elevation, floodways, surface water runoff, existing and proposed drainage patterns, and other information, including a detailed flood elevation study, drainage report, and findings and opinions by a licensed professional civil engineer, shall be provided to evaluate potential flooding. (b) The director of public works shall determine the applicability of the various development and construction standards provided in this chapter based upon information available from a Federal, State, or other source, including information provided by the permit applicant. (c) A drainage facility shall not be modified, constructed, lined, or altered in any way to accommodate the improvement without the approval of the director of public works. (1993, ord 93-78, sec 3; am 2001, ord 01-108, sec 1; am 2007, ord 07-169, sec 16.) 27-25