Environmental Rules in West Allis, WI (2026)
1 verified environmental rules for West Allis, Wisconsin, sourced directly from the municipal code and official government pages.
Verified from official government sources
Flood Zones
The City of West Allis 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. Honey Creek (a tributary of the Menomonee River) and the Kinnickinnic River watershed run through the city and are the principal regulated waterways. The city maintains a public Flooding Tracker GIS service that shows the FEMA 100-year floodplain and floodlines for West Allis. Development in mapped Special Flood Hazard Areas requires zoning approval; new residential structures are prohibited in the regulatory floodway, and habitable space in the flood fringe must be elevated to the flood protection elevation.
Flood Zone Regulations (West Allis, WI)
Heavy RestrictionsWis. Stat. § 87.30(1)(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 as practicable and after public hearing, determine and fix by order the l...
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