Flood Zones: Ashwaubenon vs De Pere

The Village of Ashwaubenon Floodplain Zoning Ordinance is Chapter 14 of the Municipal Code, adopted under Wis. Stat. Sec. 61.35, Sec. 62.23, and Sec. 87.30, in conformance with Wis. Admin. Code Ch. NR 116 and 44 CFR 59-72. Sec. 14-1-7 establishes the Floodway District (FW), Floodfringe District (FF), and General Floodplain District (GFP) corresponding to A, AE, AH, and AO zones on the FEMA FIRM. Official maps cited in Sec. 14-1-6(B)(1) include Brown County FIRM panels 55009C0168G, 0254G, 0256G, and 0258G dated May 9, 2023, plus panels 55009C0144G, 0163F, 0164F, 0234F, 0251F, 0252F, and 0253F dated August 18, 2009, with the Brown County Flood Insurance Study (FIS) volumes 55009CV001C-CV004C dated May 9, 2023. Sec. 14-1-5 sets the Flood Protection Elevation at 2 feet of freeboard above the Regional Flood Elevation. Floodplain permits are administered by the Community Development Department.

The City of De Pere 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. The Fox River is the principal regulated waterway through the city. The currently effective FEMA Flood Insurance Rate Maps (FIRMs) for Brown County, which include De Pere, were adopted by the Brown County Board of Supervisors on February 15, 2023 and became effective on May 9, 2023. Development in mapped Special Flood Hazard Areas requires zoning approval, and new residential structures in the regulatory floodway are prohibited under NR 116.