FEMA flood zone rules in Somerset County, NJ — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
New Jersey's Flood Hazard Area Control Act, N.J.S.A. 58:16A-50 et seq., requires an NJDEP flood hazard area permit to build, fill, or disturb land in the flood hazard area or riparian zone of the Raritan, Millstone, and their tributaries across Somerset County.
The Act empowers NJDEP to regulate development in delineated flood hazard areas and floodways. Along Somerset County waterways, from the North and South Branch Raritan through Bound Brook, Manville, and Bridgewater, which flooded severely during Hurricane Ida, building, filling, grading, or clearing within the flood hazard area or riparian zone requires an NJDEP flood hazard area permit. Riparian zones extend 50, 150, or 300 feet from top of bank depending on the water's resource value. New structures must have their lowest floor elevated at least one foot above the flood hazard area design flood elevation. Every municipality also enforces an NFIP floodplain ordinance.
Building or placing fill in the flood hazard area or riparian zone without an NJDEP permit violates the Act, bringing stop-work orders, penalties, mandatory removal, and loss of flood-insurance eligibility.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Somerset County's flood zones rules stack up against other locations.
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