N.J. Stat. Ann. § 12:6A-3

The Division of Navigation is further authorized and empowered to dredge and remove any and all obstructions in every waterway or stream in the State of New Jersey to a depth and width to be determined by the council of the Division of Navigation and to erect such bulkheads, breakwaters, groins or jetties as are necessary to prevent erosion and stabilize the shore in the vicinity of any inlet along the coast of the State of New Jersey.