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State of New Jersey Department of Environmental Protection

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COASTAL GENERAL PERMIT 20 – Minor Maintenance dredging in man-made lagoons

The Coastal General Permit 20 authorizes minor maintenance dredging in man-made lagoons, provided:  

  • The waterway where the structure will be located meets the definition of man-made lagoon found at N.J.A.C. 7:7-1.3;
  • No more than 100 cubic yards of material is to be dredged;
  • The proposed lagoon depth is 6 feet or less below mean low water;
  • The dredged material will be place on an upland site and stabilized;
  • Any wetlands adjacent to the dredging activity are protected by creating a dredged slope no steeper than one vertical foot for each 3 horizontal feet, starting at the waterward edge of the wetlands; and
  • The dredged lagoon depth is not deeper than the water depth outshore of the project.

You can read the full details in the rule at N.J.A.C.7:7-7.20.

If your project does not meet the requirements or limitations of Coastal General Permit 20, it may qualify for a permit-by-rule, other general permit, or a Waterfront Development Individual Permit.  Please review those tabs under Coastal Permitting for additional information.

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