The breadth of water front appertaining to each proprietor or owner of land on the river bank shall be determined by protracting the lines of the land to the line established as the limit to which wharves may be built, whenever the protraction of the said lines would not result in giving the said owner more, or to any other property owner less than his proportionate share of frontage on the said wharf line; and in case of a conflict arising from the divergence or conveyance of the lines of private riparian property, or of the public streets, the board of wardens are authorized to settle the lines outside of low water mark, so that equal justice shall be done to all concerned.
53 P.S. § 16834