Key Facts Ordinance Text Full Breakdown Violations FAQ Sources More in Ashwaubenon

Ashwaubenon, WI Environmental Rules: Flood Zones (2026)

Heavy Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified May 2026

FEMA flood zone rules in Ashwaubenon, WI, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.

Key Facts

Sec 14: Sec. 14-1-1 statutory authority: Wis. Stat. Sec. 61.35, Sec. 62.23, and Sec.
Flood Zone: Floodplain districts in Sec. 14-1-7: Floodway, Floodfringe, General Floodplain
Effective Brown: Effective Brown County FIRM panels 0168G, 0254G, 0256G, 0258G dated 05/09/2023
Older FIRM: Older FIRM panels 0144G, 0163F, 0164F, 0234F, 0251F, 0252F, 0253F dated 08/18/2009
Brown County: Brown County FIS volumes CV001C-CV004C dated 05/09/2023
Flood Zone: Flood Protection Elevation = Regional Flood Elevation + 2 feet of freeboard
Flood Zone: Floodway District (Sec. 14-6-2) prohibits new wells and additions that increase flood
Flood Zone: Dutchman Creek floodplain study by McMahon Associates approved by WDNR June 29,

FEMA Flood Zone Lookup

FEMA assigns every parcel in the U.S. a flood-hazard designation on its Flood Insurance Rate Maps (FIRMs). Zones starting with A or V are high-risk Special Flood Hazard Areas where federally backed mortgages require NFIP flood insurance. Zone X indicates moderate-to-minimal risk, where insurance is optional but often recommended. Your specific zone determines insurance cost, build elevation, and permit requirements in Ashwaubenon, WI.

Zone	What it means	NFIP required?
A	High-risk flood area; 1% annual chance flood, no detailed analysis.	Yes
AE	High-risk; same as A but with established Base Flood Elevations.	Yes
AH	High-risk shallow flooding (1-3 ft), usually ponding.	Yes
AO	High-risk shallow flooding (1-3 ft) with sheet flow on sloping terrain.	Yes
V	High-risk coastal zone subject to wave action (no BFE).	Yes
VE	High-risk coastal zone with wave action and established BFEs.	Yes
X (shaded)	Moderate risk; between the 1% and 0.2% annual chance flood.	Recommended
X	Minimal risk; outside the 0.2% annual chance floodplain.	No

Look up Ashwaubenon, WI on the FEMA flood map

FEMA maps update periodically; verify zone before buying flood insurance or building.

Summary

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.

14-1-6 General Provisions. (A) Areas to be Regulated. This ordinance regulates all areas of special flood hazard identified as zones A, AO, AH, A1-30, or AE on the Flood Insurance Rate Map. Additional areas identified on maps approved by the Department of Natural Resources (DNR) and Village may also be regulated under the provisions of this ordinance, where applicable. (B) Official Maps & Revisions. Special Flood Hazard Areas (SFHA) are designated as zones A, A1-30, AE, AH, or AO on the Flood Insurance Rate Maps (FIRMs) based on flood hazard analyses summarized in the Flood Insurance Study (FIS)... (1) Official maps: Based on the Brown County Flood Insurance Study (FIS): (a) Brown County Flood Insurance Rate Map (FIRM), panel numbers 55009C0168G, 55009C0254G, 55009C0256G, and 55009C0258G, dated 05/09/2023.

Source: Ashwaubenon Code Chapter 14 Article 1 (Floodplain - In General)View official code

Full Breakdown

Sec. 14-1-1 cites Wis. Stat. Sec. 35 and Sec. 23 for village zoning authority and Sec. 30 for floodplain zoning. Sec. 14-1-7 divides regulated areas into the Floodway District (FW), Floodfringe District (FF), and General Floodplain District (GFP), corresponding to A, AE, AH, AO, and A1-30 zones on the FIRM. Sec. 14-1-6(B)(1) lists the official maps: Brown County FIRM panels 55009C0168G, 55009C0254G, 55009C0256G, and 55009C0258G dated 05/09/2023, panels 55009C0144G, 55009C0163F, 55009C0164F, 55009C0234F, 55009C0251F, 55009C0252F, and 55009C0253F dated 08/18/2009, FIS volumes 55009CV001C through 55009CV004C dated 05/09/2023, plus Letters of Map Revision 19-05-1474P-550600 (effective 02/24/2020) and 20-05-2968P-550600 (effective 10/16/2020) and a Dutchman Creek floodplain study completed by McMahon Associates and approved by the Wisconsin DNR on June 29, 2021.

Sec. 14-1-5 defines Flood Protection Elevation as 2 feet of freeboard above the Regional Flood Elevation. Sec. 14-6-1(B)(8) requires substantially damaged residential nonconforming structures to be rebuilt with the lowest floor (including basement) elevated to or above the Flood Protection Elevation, anchored against flotation, and with flood-resistant materials. Sec. 14-6-2 prohibits modifications or new wells in the Floodway District unless the addition is floodproofed without fill to the Flood Protection Elevation and does not increase regional flood height. Sec. 14-6-3 in the Floodfringe District prohibits any floor below the Regional Flood Elevation for residential or commercial structures and limits flood depths and velocities for variances.

Sec. R. 70 / Wis. Stat. Sec. 30(1)(e). Sec. 17-8-600 of the Zoning Code cross-references Chapter 14, Article VI, for floodplain districts. The Fox River and Dutchman Creek are principal regulated waterways. Manufactured homes (Sec. 14-6-1(D)(9)-(10)) must be elevated to or above the base flood elevation and anchored. Recreational vehicles (Sec. 14-6-1(D)(11)) must be on site fewer than 180 consecutive days or be fully licensed and ready for highway use.

Violations & Fines

Sec. 14-1-10 makes any structure or use located, constructed, repaired, extended, or altered without full compliance and a floodplain permit a violation. Penalties are in Article 10 of Chapter 14. Sec. 17-9-200 of the Zoning Code authorizes the Village Attorney to seek injunction, mandamus, abatement, or removal, with forfeitures under the Sec. 1-1-13 bond schedule. Wis. Stat. Sec. 87.30(2) requires local enforcement, and noncompliance can lead to suspension from the National Flood Insurance Program under 44 CFR Part 59.

Frequently Asked Questions

What law authorizes Ashwaubenon's floodplain ordinance?

Sec. 14-1-1 cites Wis. Stat. Sec. 61.35 and Sec. 62.23 for village zoning authority and Sec. 87.30 for floodplain zoning, with the ordinance designed to meet Wis. Admin. Code Ch. NR 116 and 44 CFR 59-72.

When did the current FEMA flood maps for Ashwaubenon take effect?

Sec. 14-1-6(B)(1) lists Brown County FIRM panels 55009C0168G, 0254G, 0256G, and 0258G effective May 9, 2023, alongside earlier panels effective August 18, 2009. Brown County FIS volumes 55009CV001C-CV004C are also dated May 9, 2023.

How much freeboard is required above the regional flood elevation?

Sec. 14-1-5 defines the Flood Protection Elevation as 2 feet of freeboard above the Regional Flood Elevation. Substantially damaged structures rebuilt under Sec. 14-6-1(B)(8) must elevate the lowest floor (including basement) to or above the Flood Protection Elevation.

Sources & Official References

Other rules in Ashwaubenon

Parking Rules: Overnight ParkingSome Restrictions Parking Rules: RV & Boat ParkingSignificant Restrictions Flood Elevation RequirementsSome Restrictions Erosion ControlSome Restrictions Stormwater ManagementSome Restrictions Boat Dock PermitsFew Restrictions Noise Ordinances: Vehicle NoiseSome Restrictions Parking Rules: Commercial & Oversized VehiclesSignificant Restrictions Fence Regulations: Material RestrictionsSignificant Restrictions Animal Ordinances: Cat RulesSome Restrictions

All Ashwaubenon rules

Compare Ashwaubenon to another location·View the Wisconsin environmental rules overview

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.

Flood Zones in Nearby Cities

How other cities in Brown County handle flood zones.

Green Bay, WI

Some Restrictions