1 county-level rule, plus city-specific rules for 3 cities in Waukesha County, Wisconsin.
Verified from official government sources
Wisconsin Statute 87.30 requires every county and municipality with FEMA-mapped floodplain to adopt a floodplain zoning ordinance meeting Wis. Admin. Code ch. NR 116 and 44 CFR 59-72 (NFIP). Waukesha County administers the Floodland Protection Ordinance (EO-17838) for unincorporated areas, regulating the Fox River, Bark River, Pewaukee River, Oconomowoc River, and other mapped waterways. Wisconsin requires the lowest floor at least 2 feet above the regional flood elevation - stricter than the FEMA NFIP minimum.
Wis. Stat. § 87.30
87.30 87.30 Floodplain zoning. 87.30(1) (1) State powers. 87.30(1)(a) (a) If any county, city or village does not adopt a reasonable and effective floodplain zoning ordinance within one year after hydraulic and engineering data adequate to formulate the ordinance becomes available, the department shall, upon petition of an interested state agency or a municipality or upon its own motion as soon...
3 cities in Waukesha County have their own environmental rules rules. Each link goes to that city's dedicated page with code citations.
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