FEMA flood zone rules in Neenah, WI — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
The City of Neenah participates in the National Flood Insurance Program (NFIP) and regulates floodplain development in conformance with Wis. Stat. Sec. 87.30 and Wisconsin Administrative Code Chapter NR 116, plus 44 CFR Parts 59-72. Lake Winnebago and the Fox River are the principal flood sources through the city. Development in mapped Special Flood Hazard Areas requires zoning approval before any building permit is issued, new residential structures are prohibited in the regulatory floodway, and structures in the flood fringe must have the lowest floor of habitable space elevated to the flood protection elevation. FEMA Flood Insurance Rate Maps for Winnebago County and the City of Neenah are the regulatory maps.
Wis. Stat. Sec. 87.30 requires every Wisconsin municipality with mapped floodplain or that participates in the NFIP to adopt and enforce a floodplain zoning ordinance meeting the minimum standards of Wis. Admin. Code Chapter NR 116 and 44 CFR Parts 59-72. NR 116 establishes the regulatory floodway/flood fringe distinction, defines the regional flood (the 1 percent annual chance flood used by FEMA), and requires a flood protection elevation typically two feet above the regional flood elevation under NR 116.13. New residential structures, fill, and most obstructions are prohibited in the regulatory floodway under NR 116.13(2); in the flood fringe, the lowest floor of habitable space must be at or above the flood protection elevation, and accessory structures must be flood-proofed or elevated under NR 116.13(3). The City of Neenah, situated on the north shore of Lake Winnebago at the outlet to the Fox River, has flooding risk from both water bodies, and the city is included in the FEMA Flood Insurance Study and Flood Insurance Rate Maps for Winnebago County. Locally, floodplain zoning is administered through the city Zoning Ordinance and the Department of Community Development. Floodplain permits must be issued before any building permit, and elevation certificates are required for new or substantially improved structures. Authoritative maps are at the FEMA Map Service Center (msc.fema.gov), the National Flood Hazard Layer, and the Wisconsin DNR Floodplain Mapping Program; Winnebago County also publishes an Adopted Floodplain Viewer.
Wis. Stat. Sec. 87.30(2) and NR 116.21 require enforcement of local floodplain zoning. Violations - including filling, structural development, or occupancy of habitable space in the floodway, building below the flood protection elevation in the flood fringe, or improvements that exceed substantial-improvement thresholds without bringing a structure into compliance - can result in citation, daily forfeitures, removal or restoration orders, and the loss of federal disaster assistance and NFIP eligibility for the property. Misrepresenting elevation data on a permit application is independently actionable. A community that fails to enforce the ordinance can be suspended from the NFIP under 44 CFR Part 59.
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