A. 
Generally. The boundaries of all floodplain districts are designated as A, AE, AH, AO, or A1-30 on the maps based on the Flood Insurance Study listed below. Any change to the base flood elevations or any change to the boundaries of the floodplain or floodway in the Flood Insurance Study or on the Flood Insurance Rate Map must be reviewed and approved by the Wisconsin Department of Natural Resources and the Federal Emergency Management Agency through the letter of map change process (See § 170.1271.) before it is effective. No changes to regional flood elevations on non-FEMA maps shall be effective until approved by the Wisconsin Department of Natural Resources. These maps and revisions are on file in the office of the Zoning Administrator. If more than one map or revision is referenced, the most restrictive information shall apply.
B. 
Official floodplain maps. The following are adopted for the purpose of this article:
(1) 
Flood Insurance Rate Map (FIRM) Panel Number 550518, dated October 16, 2015; with corresponding profiles that are based on the Flood Insurance Study dated October 16, 2015:
(a) 
55131CV001B, 55131CV002B; and 55131CV003B.
(b) 
55131C0241E, 55131C0242E, 55131C0243E, 55131C0244E, 55131C0262D (not printed), 55131C0263E, 55131C0264D, 55131C0266D, 55131C0268D, 55131C0331E, 55131C0332E, 55131C0333E, 55131C0334E, 55131C0351E, 55131C0352E, 55131C0353E, 55131C0354E, 55131C0356E, and 55131C0358E (approved by the DNR and FEMA).
(2) 
Flood storage maps: Panel 5, 6, 7, and 8, dated April 16, 2015, as approved by the Wisconsin Department of Natural Resources.
(3) 
If land is annexed and is not included in any of the above-mentioned Flood Insurance Rate Map Panels, such panel is included in this article upon the date of annexation.
The Floodplain Overlay District is divided into four districts as follows:
A. 
The Floodway District includes the channel of a river or stream and those portions of the floodplain adjoining the channel required to carry the regional floodwaters and are contained within AE Zones as shown on the Flood Insurance Rate Maps.
B. 
The Floodfringe District includes that portion between the regional flood limits and the floodway and displayed as AE Zones on the Flood Insurance Rate Maps.
C. 
The General Floodplain District includes those areas that may be covered by floodwater during the regional flood and does not have a base flood elevation or floodway boundary determined, including A, AH, and AO Zones on the Flood Insurance Rate Maps.
D. 
The Flood Storage District is that area of the floodplain where storage of floodwaters is calculated to reduce the regional flood discharge.
A. 
Generally. Discrepancies between boundaries on the official Floodplain Zoning Map and actual field conditions shall be resolved using the criteria in this section. If a significant difference exists, the map shall be amended according to § 170.1271. The Zoning Administrator can rely on a boundary derived from a profile elevation to grant or deny a land use permit, whether or not a map amendment is required. The Zoning Administrator shall be responsible for documenting actual predevelopment field conditions and the basis upon which the district boundary was determined and for initiating any map amendments required under this section.
B. 
Criteria. If flood profiles exist, the map scale and the profile elevations shall determine the district boundary. Regional flood elevations or base flood elevations shall govern if there are any discrepancies. If flood profiles do not exist, the location of the boundary shall be determined by the map scale.
C. 
Disputes. If an applicant does not agree with the boundary determination made by the Zoning Administrator, he or she shall file an administrative appeal as provided for in Article 5. If the Zoning Board of Appeals determines, based on the criteria in this section, that the boundary location is incorrectly mapped, the Board should inform the Plan Commission or the person contesting the boundary location to submit an application for a map amendment pursuant to the requirements and procedures in § 170.1271.
Compliance with the provisions of this division shall not be grounds for removing land from the floodplain unless 1) it is filled at least two feet above the regional flood elevation or base flood elevation, 2) the fill is contiguous to land outside of the floodplain, and 3) the map is amended pursuant to § 170.1271.