(A) This chapter’s protection standard is the base flood. The best available base flood data are listed below. Whenever a party disagrees with the best available data, the party shall finance the detailed engineering study needed to replace the existing data with better data and submit it to the FEMA and IDNR/OWR for approval prior to any development of the site.
(1) The base flood elevation for the floodplains of Richland Creek, Wolf Branch Creek and Catawba Creek shall be as delineated on the base flood profiles in the countywide Flood Insurance Study of St. Clair County prepared by the Federal Emergency Management Agency and dated 11-5-2003.
(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 countywide Flood Insurance Rate Map of St. Clair County.
(3) The base flood elevation for each of the remaining floodplains delineated as an "A Zone" on the countywide Flood Insurance Rate Map of St. Clair County shall be according to the best data available from federal, state or sources. Should no other data exist, an engineering study must be financed by the applicant to determine base flood elevations.
(4) The base flood elevation for the floodplains of those parts of unincorporated St. Clair County that are within the extraterritorial jurisdiction of the Village of Swansea, or that may be annexed into the village, shall be as delineated on the base flood profiles in the Flood Insurance Study of St. Clair County prepared by the Federal Emergency Management Agency and dated 11-5-2003.
(B) The Village of Swansea must "reasonably utilize" the data from any draft or preliminary Flood Insurance Rate Map or Flood Insurance Study covering the village.
(Prior Code, § 17-104) (Ord. 1891, passed 10-5-2020)