(A) Water bodies, roadways, structures and other property in the county are subjected to flooding.
(B) In order to help minimize the occurrence and impact of flooding resulting in the loss of life and/or property, the following are required.
(1) FEMA studied waterways:
(a) FEMA floodway/floodplain delineation. All plans submitted shall have the floodway (FW) and floodplain (FP) delineated on the grading plan(s) as scaled from the FEMA flood insurance rate maps. A reference to the panel number and date of the map shall also be included. Where no FW is delineated, the entire floodplain shall be assumed to be the FW.
(b) One-hundred-year base flood elevation (BFE). The 100-year BFE shall be noted on the grading plan(s). This BFE shall be determined using the flood insurance study (FIS) and the appropriate plate. A note referencing the plate number and date shall be included on the plans.
(2) Non-FEMA studied waterways (greater than one square mile drainage basin): DNR floodway/floodplain delineation. All plans shall have the FW and FP delineated as determined by the DNR. A note referencing the DNR determination and a copy of the DNR response letter shall be provided prior to approval by the County Drainage Board.
(3) Basins less than one square mile in area: floodplain delineation. All waterways with drainage basins less than one square mile and greater than 25 acres shall have the 100-year BFE determined by methods outlined in the County Stormwater Design Manual and delineated on the plans. Complete documentation of this determination shall be included with the submission.
(C) No structures shall be located in a FEMA or DNR designated floodway. No structures shall be located within the floodplain of drainage basins less than one square mile unless a floodway determination is conducted.
(D) The lowest finished floor of all structures located within a floodplain shall have a two-foot flood protection grade (FPG) with respect to the lowest floor of the structure.
(Ord. 1-4-17, passed 11-18-2003) Penalty, see § 52.99