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 FEMA and IDNR/OWR for approval prior to any development of the site.
(A) The base flood elevation for each of the floodplains delineated as an A Zone on the countywide Flood Insurance Rate Maps of Grundy and Will Counties 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.
(B) The base flood elevation for the floodplains of those parts of unincorporated Grundy and Will Counties 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 of Grundy County prepared by FEMA and dated August 2, 2012, and in the Flood Insurance Study of Will County prepared by FEMA and dated February 15, 2019.
(C) The base flood or 100 years frequency flood elevation for the floodplain of the village that are within the Claypool Drainage and Levee District shall be as delineated on the 100-year flood profiles in the Claypool and Maine Township Regional Stormwater Drainage Study prepared by Grundy County and dated April 4, 2014.
(Ord. 2019-02, passed 1-22-2019)