Ridgewood, NJ Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Minimum freeboard
- 1 foot above design flood elevation
- Class IV critical facility freeboard
- 2 feet, ASCE 24
- Class III critical facility freeboard
- 1 additional foot, ASCE 24
- AO Zone default
- 3 feet above highest adjacent grade
- Enforcing official
- Village Engineer as Floodplain Administrator
- Governing section
- Village of Ridgewood Code § 154-12
Summary
The Village of Ridgewood sets a local design flood elevation (LDFE) that adds at least one foot of freeboard above the state's minimum flood elevation for A, Coastal A and V zones, with two feet of freeboard required for the most critical facilities. The rule is enforced by the Floodplain Administrator under Chapter 154, Article II.
The local design flood elevation (LDFE) is established in the flood hazard areas determined in § 154-11, 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. ... For a delineated watercourse, the elevation associated with the best available flood hazard data area determined in § 154-11, above, plus one foot or as described by N.J.A.C. 7:13 of freeboard; ... Class IV critical facilities. For any proposed development of new and substantially improved Flood Design Class IV critical facilities, the local design flood elevation must be the higher of the 0.2% annual chance (500-year) flood elevation or the flood hazard area design flood elevation with an additional two feet of freeboard in accordance with ASCE 24.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4854397; v35 updated 2026-04-22; through 04-22-2026).
Full Breakdown
Village of Ridgewood Code § 154-12 establishes the local design flood elevation (LDFE) using the best available flood hazard data identified in § 154-11, the Flood Hazard Area Control Act's minimum statewide elevation requirements for A, Coastal A and V zones, ASCE 24 requirements for critical facilities, plus additional village-required freeboard. C. 7:13, whichever applies. C. 7:13. In AO Zones on the FIRM, the LDFE is the highest adjacent grade plus the FIRM's specified depth number plus one foot of freeboard, or three feet above the highest adjacent grade if no depth number is given.
Class IV critical facilities (the most essential, such as emergency response buildings) must use the higher of the 500-year flood elevation or the flood hazard area design flood elevation, plus two feet of ASCE 24 freeboard. Class III critical facilities in coastal high-hazard areas use the higher of the 500-year elevation or the flood hazard area design flood elevation, plus one additional foot of ASCE 24 freeboard. The Floodplain Administrator, the Village Engineer, verifies that each permit application correctly applies these LDFE methodologies before a floodplain development permit issues.
Violations & Fines
Development that does not meet the applicable LDFE and freeboard cannot receive a floodplain development permit; the Floodplain Administrator must verify the applicant's proposed design flood elevation before any permit is issued under § 154-19B, and noncompliance exposes the owner to the Chapter 154 misdemeanor penalties of up to $1,250 per day and up to 90 days imprisonment.
Frequently Asked Questions
How much freeboard does Ridgewood require above the base flood elevation?
Does Ridgewood require extra freeboard for critical facilities?
What if my property is in an AO Zone with no depth number listed?
Who verifies the flood elevation used on my Ridgewood permit application?
Sources & Official References
Other rules in Ridgewood
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