12-1-5: BASE FLOOD ELEVATION:
This chapter's protection standard is based on the flood insurance study for the village.
   A.   If a base flood elevation or 100-year frequency flood elevation is not available for a particular site, then the protection standard shall be according to the best existing data available from federal, state or other sources.
   B.   When a party disagrees with the best available data, he/she shall submit a detailed engineering study needed to replace existing data with better data and submit it to IDNR/OWR and FEMA for review and consideration prior to any development of the site.
   C.   The base flood or 100-year frequency flood elevation for the SFHAs of any river, creek or stream shall be as delineated on the 100-year flood profiles in the flood insurance study of Cook County prepared by FEMA dated November 1, 2019, and such amendments to such study and maps as may be prepared from time to time.
   D.   The base flood or 100-year frequency flood elevation for the SFHAs of those parts of unincorporated Cook County that are within the extraterritorial jurisdiction of the village or that may be annexed into the village shall be as delineated on the 100-year flood profiles in the flood insurance study prepared by FEMA and dated November 1, 2019, and such amendments or revisions to such study and maps as may be prepared from time to time.
   E.   The base flood or 100-year frequency flood elevation for each SFHA delineated as an "AH zone" or "AO zone" shall be that elevation (or depth) delineated on the countywide flood insurance rate map of Cook County panel numbers 17031C0608J, 17031C0609J, and 17031C0616J prepared by FEMA and dated August 19, 2008, and panel 17031C0617K prepared by FEMA and dated November 1, 2019.
   F.   The base flood or 100-year frequency flood elevation for each of the remaining SFHAs delineated as an "A zone" on the countywide FIRMs of Cook County shall be according to the best existing data available from federal, state or other sources. Should no other data exist, an engineering study must be financed by the applicant to determine base flood elevations.
      1.   When no base flood elevation exists, the base flood elevation shall be determined from an accepted hydraulic model, based on current industry standards.
      2.   The flood flows used in the hydraulic models shall be obtained from an accepted hydrologic model, based on current industry standards, or by techniques presented in various publications prepared by the United States Geological Survey for estimating peak flood discharges. (Ord. 08-06, 3-18-2008; Ord. 2019-51, 10-15-2019)