N.J. Stat. § 52:28-12
First. The line extending from the Hudson river on the east to the Delaware on the west, as the same was laid down and marked with monuments in seventeen hundred and seventy-four, by William Wickham and Samuel Cale, commissioners on the part of the then colony of New York, duly appointed for that purpose in pursuance of an act of the assembly of the colony of New York, passed on the sixteenth day of February, seventeen hundred and seventy-one, entitled "An act for establishing the boundary or partition line between the colonies of New York and Nova Caesarea, or New Jersey, and for confirming titles and possession," and John Stevens and Walter Rutherford, commissioners on the part of the then colony of New Jersey, duly appointed in pursuance of an act of the assembly of the colony of New Jersey, passed on the twenty-third day of September, seventeen hundred and seventy-two, entitled "An act for establishing the boundary or partition line between the colonies of New York and Nova Caesarea, or New Jersey, and for confirming titles and possession," which said line has since been acknowledged and recognized by the two states as the limit of their respective territory and jurisdiction, shall, notwithstanding its want of conformity to the verbal description thereof, as recited by said commissioners, continue to be the boundary or partition line between the said two states; provided, that wherever upon said line the location of one or more of the monuments erected by said commissioners in seventeen hundred and seventy-four, has been lost, and cannot otherwise be definitely fixed and determined, then in that case, and in every case where it is required to establish intervening points on said line, a straight line drawn between the nearest adjacent monuments, whose localities are ascertained, shall be understood to be, and shall be, the true boundary line.
N.J.S. § 52:28-12