Woodbridge, NJ Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Minimum freeboard, delineated watercourse
- +1 foot above mapped elevation
- AO Zone default
- 3 feet above highest adjacent grade
- Class IV critical facility freeboard
- +2 feet above design flood elevation
- Class III critical facility freeboard
- +1 foot above design flood elevation
- Cure period before higher fine
- 30 days
- Fine after uncured violation
- Over $1,250.00
Summary
Woodbridge requires new and substantially improved buildings in flood hazard areas to be built to a Local Design Flood Elevation that adds at least one foot of freeboard above the state's mapped flood data, with two feet required for the most critical facilities.
The Local Design Flood Elevation (LDFE) is established in the flood hazard areas determined in Section 22-2.2, above, using the best available flood hazard data sources, and the Flood Hazard Area Control Act minimum Statewide elevation requirements for lowest floors in A, Coastal A, and V zones, ASCE 24 requirements for critical facilities as specified by the building code, plus additional freeboard as specified by this chapter. At a minimum, the Local Design Flood Elevation shall be as follows: For a delineated watercourse, the elevation associated with the Best Available Flood Hazard Data Area determined in Section 22-2.2, above plus one (1) foot or as described by N.J.A.C. 7:13 (whichever is most protective shall prevail).
Full Breakdown
3, added by Ordinance No. 2202-07 in 2022, establishes the Local Design Flood Elevation (LDFE) using the best available flood hazard data, the Flood Hazard Area Control Act's minimum statewide elevation requirements for lowest floors in A, Coastal A and V zones, ASCE 24 requirements for critical facilities under the building code, plus additional freeboard set by the chapter. C. 7:13, whichever is more protective. C. 3. In AO Zones, the LDFE is the highest adjacent grade plus the FIRM depth number plus one foot, or three feet above grade if no depth number is shown.
Class IV critical facilities must be built to the higher of the 500-year flood elevation or the Flood Hazard Area Design Flood Elevation plus two feet of freeboard; Class III critical facilities in coastal high-hazard areas get the higher of the 500-year elevation or that design elevation plus one foot. A Floodplain Administrator, established by Township resolution on January 19, 2022, administers these standards and can require variances under § 22-7 where the strict elevation cannot be met.
Violations & Fines
Development without a permit, or in conflict with an issued permit, is a violation under § 22-8.1; a building lacking documentation of the required lowest-floor or lowest-horizontal-member elevation is presumed in violation until documentation is provided. Continued work after a stop-work order is subject to penalties under N.J.S.A. 40:49-5, and after a 30-day cure period a fine greater than $1,250 may be imposed under § 22-8.4.
Frequently Asked Questions
What is Woodbridge's Local Design Flood Elevation based on?
How much extra elevation do critical facilities need in Woodbridge?
What happens if a building in a Woodbridge flood zone is built without a permit?
Sources & Official References
Other rules in Woodbridge
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Flood Elevation Requirements in Nearby Cities
How other cities in this county handle flood elevation requirements.