(A) This chapter’s protection standard is the base flood. The best available base flood elevation data are listed below. Whenever a party disagrees with the best available data, the party may finance the detailed engineering study needed to replace the existing data with better data and submit it to the Federal Emergency Management Agency for approval.
(B) Base flood elevation data are listed below:
(1) The base flood elevation for the floodplains of the Mississippi River shall be as delineated on the 100-year flood profiles in the Flood Insurance Study of the city prepared by the Federal Emergency Management Agency and dated January 1980, and as subsequently amended.
(2) The base flood elevation for each floodplain delineated as an “AH Zone” or “AO Zone” shall be that elevation (or depth) delineated on the Flood Insurance Rate Map of the city.
(3) The base flood elevation for each of the remaining floodplains delineated as an “A Zone” on the Flood Insurance Rate Map of the city shall be according to the best data available from federal, state or other sources. Should no other data exist, an engineering study must be financed to determine base flood elevations.
(4) The base flood elevation for the floodplains of those parts of unincorporated Madison and St. Clair Counties that are within the extraterritorial jurisdiction of the city, or that may be annexed into the city, shall be as delineated on the 100-year flood profiles of the Flood Insurance Study of Madison and St. Clair Counties prepared by the Federal Emergency Management Agency and dated January 31, 1975, and as subsequently amended.
(Ord. 1352, passed 2-11-1997; Am. Ord. 1550, passed 6-19-2001)