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NJ FHA Regulations 1
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The flood hazard area, computed by using 100-year discharge plus 25%, has been the state's regulatory standard for years. NJ had their own flood hazard maps, but failed to keep the maps up to date. In addition, FEMA firm maps did not show the stricter flood hazard standard adopted by NJ.
In 1962, the State of New Jersey authorized its Department of Environmental Protection “to adopt land use regulations for the flood hazard area, to control stream encroachments, to coordinate effectively the development, dissemination, and use of information on floods and flood damages.” The state’s approach to effectively providing this information was to develop flood inundation maps. The New Jersey maps predated the Federal maps and presented the 1% annual chance event and the floodway that the Federal maps eventually showed but also reflected a special hazard area derived from a 1% annual chance plus 25% discharge. These maps preceded similar efforts at the federal level.
About 2004, the State of New Jersey requested assistance from FEMA to digitally capture and georeference NJSFHA from state maps for use with unrevised streams on new maps. By including the NJSFHA as an analyzed risk on the DFIRM, the state would be able to use the FEMA DFIRMs as the single source for both Federal and state floodplain management, freeing up staff resources and increasing efficiency.
In 2006, the NJDEP and FEMA signed a Cooperating Technical Partnership Agreement (CTP) to perform map production working together with FEMA to build next generation of FEMA and State flood mapping. NJDEP has initiated this process.
For more information Contact:
NJDEP Office of Engineering and Construction, Bureau of Dam Safety and Flood Control, P. O. Box 419, Trenton, NJ 08625
David Rosenblatt, Administrator or John H. Moyle, PE, State NFIP Coordinator
Tele: (609) 292-2296; Fax: (609) 984-1908; Web:
In 1962, the State of New Jersey authorized its Department of Environmental Protection “to adopt land use regulations for the flood hazard area, to control stream encroachments, to coordinate effectively the development, dissemination, and use of information on floods and flood damages.” The state’s approach to effectively providing this information was to develop flood inundation maps. The New Jersey maps predated the Federal maps and presented the 1% annual chance event and the floodway that the Federal maps eventually showed but also reflected a special hazard area derived from a 1% annual chance plus 25% discharge. These maps preceded similar efforts at the federal level.
About 2004, the State of New Jersey requested assistance from FEMA to digitally capture and georeference NJSFHA from state maps for use with unrevised streams on new maps. By including the NJSFHA as an analyzed risk on the DFIRM, the state would be able to use the FEMA DFIRMs as the single source for both Federal and state floodplain management, freeing up staff resources and increasing efficiency.
In 2006, the NJDEP and FEMA signed a Cooperating Technical Partnership Agreement (CTP) to perform map production working together with FEMA to build next generation of FEMA and State flood mapping. NJDEP has initiated this process.
For more information Contact:
NJDEP Office of Engineering and Construction, Bureau of Dam Safety and Flood Control, P. O. Box 419, Trenton, NJ 08625
David Rosenblatt, Administrator or John H. Moyle, PE, State NFIP Coordinator
Tele: (609) 292-2296; Fax: (609) 984-1908; Web:
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