Standards for the general floodplain (Zone A)

The general floodplain, identified as Zone A on the Flood Insurance Rate Maps, are areas of special flood hazards for which detailed engineering studies are not performed by the Federal Emergency Management Agency to determine the base flood elevations and to identify the floodways. (a) To determine base flood elevations and the locations of floodways within the general floodplain, the director of public works may obtain, review, and reasonably utilize any base flood elevation and floodway data available from a Federal, State, or other source, including information requested of a permit applicant. (b) Development or subdivision proposals shall conform with the requirements of section 27-20. (c) The following information shall be provided by a permit applicant to the director of public works to evaluate the proposed construction or improvement site within a general floodplain area: (1) Project location and site plan showing dimensions. (2) Relationship to floodway and floodway fringes as determined by flood elevation study. SUPP. 3 (1-2018) 27-24 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.)27-24