How Green Bay Handles Environmental Rules: A Practical Guide

Green Bay maintains 101 local ordinances across all categories, and 4 of those deal specifically with environmental rules. Here is a breakdown of what the city actually requires, what is prohibited, and where Green Bay falls on the strict-to-permissive spectrum compared to other cities.

Flood Elevation Requirements

Green Bay bars building the first habitable floor of any structure below the City's current flood elevation and requires floodproofing for uses that need it. Municipal Code § 8-166 lists ten acceptable floodproofing methods, from watertight doors to backwater valves, and sets fill and setback rules for anything built near the base flood elevation.

Key details: Habitable floor rule: Cannot sit below current City elevation. Floodproofing plan: Certified by a licensed engineer or architect. Ten qualifying measures: Watertight doors, backwater valves, anchorage, pumps, etc.. Accessory uses: Parking, yards allowed at base flood elevation. Fill requirement: 1 foot above base flood elevation, 15-ft spread.

Chapter 8's general penalty in § 8-6 applies since § 8-166 sets no fine of its own: any violation carries at least a $25.00 forfeiture under the schedule set out in § 1-6, and each 24-hour period the violation continues counts as a separate offense. The Director can also withhold occupancy or building sign-off until a structure or floodproofing plan meets the elevation and fill standards.

Stormwater Management

Green Bay requires a Director of Public Works permit before any land-disturbing project meeting Chapter 16's size thresholds breaks ground: an acre or more of residential development, a quarter acre of new impervious surface on a smaller residential lot, or half an acre of non-residential work. Municipal Code § 16-82 sets the application, 30-business-day review and security requirements; § 16-85 backs it with forfeitures up to $500 per day.

Key details: Permit authority: Director of Public Works. Triggers permit: 1+ ac. residential, 0.25 ac. impervious, or 0.5 ac. other. Review deadline: 30 business days from complete application. Performance security cap: Construction cost plus 15 percent. Forfeiture range: $50 to $500 per day.

A notice of violation gives 30 days to correct noncompliant work under § 16-85(c). The Director can issue a stop-work order, ask the City Attorney for a cease-and-desist order, or suspend or revoke the permit under § 16-85(e)-(f). Where damage to property or waters is imminent, the city may enter the land, do emergency work, and bill the responsible party plus interest and legal costs under § 16-85(d). Forfeitures run $50 to $500 per offense, with each day counted separately under § 16-85(i).

Compared to other cities, Green Bay takes a harder line on stormwater management. The enforcement and penalty structure reflects that.

Erosion Control

Green Bay requires permitted construction sites to cut sediment-laden runoff by 80 percent under an approved erosion and sediment control plan before the site reaches final stabilization.

Key details: Sediment reduction target: 80% total suspended solids. Plan required: written, site-specific, per Sec. 16-41. Duration: until final site stabilization. Enforcement: stop-work order authority. Penalty: $50–$500 forfeiture per day.

Violating any provision of this article draws a forfeiture of $50.00 to $500.00 plus costs of prosecution per offense, with each day of noncompliance a separate violation (Sec. 16-44(a)(6)); the City may also issue a stop-work order.

Flood Zones

New construction in Green Bay's floodfringe must sit on fill with the lowest floor at or above the flood protection elevation, under the city's floodplain zoning overlay.

Key details: District: Floodfringe District (FF). Elevation standard: 1 ft above regional flood elevation. Fill extent: At least 15 feet beyond structure. Access requirement: Contiguous dryland access required. Applies to: New construction, substantial improvements.

Building or substantially improving a structure in the floodfringe without meeting the elevation and fill standards violates Chapter 44's floodplain regulations and can block issuance of the required development permit under Section 44-1279.

The Bottom Line

Green Bay's environmental rules rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Green Bay is broadly strict or permissive.

All of the above reflects Green Bay's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.