This chapter’s protection standard is the base flood. The best available base load 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 to the Federal Emergency Management Agency and IDNR/OWR for approval prior to any development of the site.
(A) The floodway for the floodplains of Mississippi River Cedar Creek, Curtis Creek, Tributary No. 1 to Curtis Creek, Unnamed Tributary to Tributary No, 1 of Curtis Creek, Emery Creek, Tributary No. 2 to Curtis Creek, Tributary No. 3 to Cedar Creek and Tributary No. 3 to Curtis Creek shall be as delineated on the 100-year flood profiles in the countywide Flood Insurance Study of Adams County prepared by the Federal Emergency Management Agency and dated July 5, 2018.
(B) 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.
(C) The base flood elevation for each of the remaining floodplains delineated as an “A Zone” on the countywide flood insurance rate map 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.
(D) The base flood elevation for the floodplains of those parts of unincorporated Adams County 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 in the Flood Insurance Study of Adams County prepared by the Federal Emergency Management Agency and dated July 5, 2018.
(1980 Code, § 23.603) (Ord. 8926, passed 11-13-2001; Ord. 9183, passed 5-16-2011; Ord. 9336, passed 6-11-2018)