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This chapter regulates all areas that would be covered by the regional flood or base flood. Note: base flood elevations are derived from the flood profiles in the flood insurance study. Regional flood elevations may be derived from other studies. Areas covered by the base flood are identified as A-Zones on the flood insurance rate map.
(Ord. passed 7-15-2010)
(A) Generally. The boundaries of all floodplain districts are designated as floodplains or A-Zones on the maps listed in division (B) below and the revisions in the appendix at the end of this chapter. Any change to the base flood elevations (BFE) in the flood insurance study (FIS) or on the flood insurance rate map (FIRM) must be reviewed and approved by the DNR and FEMA before it is effective. No changes to regional flood elevations (RFEs) on non-FEMA maps shall be effective until approved by the DNR. These maps and revisions are on file in the office of the Village Clerk. If more than one map or revision is referenced, the most restrictive information shall apply.
(B) Official maps.
(1) Based on the FIS 55091C0300D:
(a) Flood insurance rate map (FIRM), panel number 55091C0310D, 55019C0320D dated 8/19/2010 with corresponding profiles that are based on the flood insurance study (FIS) dated 8/19/2010 55091CV000A; and
(b) Approved by: The DNR and FEMA.
(2) Based on other studies (the following are examples of other types of maps you may need to adopt): floodplain study appendix: all DNR- and FEMA-approved floodplain maps, flood profiles, floodway data tables, regional or base flood elevations, and other information located in the appendix at the end of this chapter. The community shall provide the most up to date appendix to the DNR and FEMA regional offices.
(Ord. passed 7-15-2010)
The regional floodplain areas are divided into three districts as follows.
(A) The Floodway District (FW) is the channel of a river or stream and those portions of the floodplain adjoining the channel required to carry the regional floodwaters.
(B) The Floodfringe District (FF) is that portion of the floodplain between the regional flood limits and the floodway.
(C) The General Floodplain District (GFP) is those areas that have been or may be covered by floodwater during the regional flood.
(Ord. passed 7-15-2010)
(A) Discrepancies between boundaries on the official floodplain zoning map and actual field conditions shall be resolved using the criteria in divisions (A)(1) or (A)(2) below. If a significant difference exists, the map shall be amended according to § 152.18 of this subchapter. 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 pre-development field conditions and the basis upon which the district boundary was determined and for initiating any map amendments required under this section. Disputes between the Zoning Administrator and an applicant over the district boundary line shall be settled according to § 152.48(C) of this chapter and the criteria in divisions (A)(1) or (A)(2) below.
(1) If flood profiles exist, the map scale and the profile elevations shall determine the district boundary. The regional or base flood elevations shall govern if there are any discrepancies.
(2) Where flood profiles do not exist, the location of the boundary shall be determined by the map scale, visual on-site inspection and any information provided by the Department.
(B) Where the flood profiles are based on established base flood elevations from a FIRM, FEMA must also approve any map amendment pursuant to § 152.18(A)(6) of this chapter.
(Ord. passed 7-15-2010)
(A) Compliance with the provisions of this chapter shall not be grounds for removing land from the floodplain unless it is filled at least two feet above the regional or base flood elevation, the fill is contiguous to land outside the floodplain, and the map is amended pursuant to § 152.18 of this chapter.
(B) This procedure does not remove the requirements for the mandatory purchase of flood insurance. The property owner must contact FEMA to request a letter of map change (LOMC).
(Ord. passed 7-15-2010)
Unless specifically exempted by law, all cities, villages, towns, and counties are required to comply with this chapter and obtain all necessary permits. State agencies are required to comply if Wis. Stat. § 13.48(13) applies. The construction, reconstruction, maintenance, and repair of state highways and bridges by the Wisconsin Department of Transportation is exempt when Wis. Stat. § 30.2022 applies.
(Ord. passed 7-15-2010)
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