A. All final plats and development plans shall indicate the limits of the regulatory floodplains, erosion hazard boundaries, maximum encroachment limits, when applicable, and the limits of the federally established regulatory floodplains and floodways (if applicable), and be delineated in a surveyable manner and sealed by an Arizona registered land surveyor.
B. All final plats shall indicate both drainage areas and their respective base flood peak discharges, with a note contained on the final plat that the drainage areas and base flood peak discharges are provided by the owner for information purposes only.
C. Where subdivision or development plan improvements modify or remove the SFHA or Shaded Zone X that is designated on the federal FIRM, a hydraulic analysis of the impact and the engineering plans for the modifications must be approved by the district and a CLOMR submitted to FEMA prior to the recording of the final plat, or final approval of the development plan. Floodplain use permits for structures may be issued as long as their finished floor elevations are at least equal to one-foot above the existing base flood elevation as shown on the current FIRM, or on the CLOMR, whichever is more restrictive.
D. Where modification of a federally defined floodway is proposed, approval of a LOMR by FEMA amending the floodway boundary is required prior to issuance of building permits in the floodway area.
E. For subdivisions or for development plans for any improvement which changes the configuration of the regulatory floodplain, including Shaded Zone X, as delineated on the FIRM, the owner shall provide to the district a new delineation of all regulatory floodplains affected by the improvement and as-built plans of the drainage improvements. The new delineations and reports shall be prepared in conformance with the requirements of FEMA for a LOMR, the state Director of Water Resources, and this title.
F. Prior to the release of assurances for subdivisions or certificate of occupancy for development plans, the LOMR must be approved by the district and submitted to FEMA for review and approval.
(Ord. 2010-FC5 § 1 (part), 2010; Ord. 2005 FC-2 § 2 (part), 2005; Ord. 1999 FC-1 § 1 (part), 1999; Ord. 1988 FC-2 Art. 11 (B) (5), (6) 1988).