Passaic, NJ Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Minimum freeboard
- 1 foot above base flood data (§ 143-2C)
- Class IV critical facility freeboard
- Additional 2 feet (§ 143-2C(4))
- Class III critical facility freeboard
- Additional 1 foot (§ 143-2C(5))
- BFE definition
- 1%-annual-chance flood elevation (§ 143-9)
- Elevation proof
- Elevation certificate at foundation and final inspection (§ 143-6)
- Applies to
- Lowest floor, incl. basement (§ 143-15B(1)(c))
Summary
New construction and substantial improvements in Passaic's flood hazard areas must sit at or above the city's 'local design flood elevation,' which adds at least one foot of freeboard on top of the mapped base flood elevation. § 143-2C sets the minimum freeboard formula; § 143-9 defines base flood elevation itself.
Establishing the local design flood elevation (LDFE). The local design flood elevation (LDFE) is established in the flood hazard areas determined in § 143-2B, 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 ... For a delineated watercourse, the elevation associated with the best available flood hazard data area determined in § 143-2B, above plus one foot or as described by N.J.A.C. 7:13 of freeboard.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4978046; v41 updated 2026-07-01; through 07-01-2026).
Full Breakdown
C. § 143-9 defines BASE FLOOD ELEVATION (BFE) as 'the water surface elevation resulting from a flood that has a 1% or greater chance of being equaled or exceeded in any given year, as shown on a published Flood Insurance Study (FIS)... "' § 143-15B(1)(c) then applies the LDFE on the ground: new construction and substantial improvement of any habitable building must have its lowest floor, including the basement, 'elevated to or above the local design flood elevation,' confirmed by an elevation certificate submitted to the Construction Official at foundation, framing and final inspection under § 143-6.
Violations & Fines
A habitable building whose lowest floor sits below the required local design flood elevation, or that lacks the elevation-certificate documentation § 143-6 and § 143-15B require, is presumed a violation under § 143-8A. The Floodplain Administrator can issue a stop-work order, and after a thirty-day cure period a fine exceeding $1,250 may follow under § 143-8D if the deficiency isn't corrected.
Frequently Asked Questions
How much freeboard does Passaic require above the base flood elevation?
What is 'base flood elevation' under Passaic's code?
Does Passaic just use FEMA's base flood elevation, or something higher?
How is compliance with the elevation requirement verified?
Sources & Official References
Other rules in Passaic
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Flood Elevation Requirements in Nearby Cities
How other cities in Passaic County handle flood elevation requirements.