Zone boundary lines are intended to follow the centerline of streets, railroad rights-of-way, streams, and lot or property lines as they exist on plats of record at the time of the passage of this chapter, unless such zone boundary lines are fixed by dimensions as shown on the zoning map, and shall include contiguous riparian lands subsequently acquired and/or filled, and lands acquired by accretion or stream diversion by natural causes.

Where such boundaries are not fixed by dimension and where they approximately follow lot lines, and where they do not scale more than 10 feet distant therefrom, such lot lines shall be construed to be such boundaries unless specifically shown otherwise.

In unsubdivided land and where a zone boundary divides a lot, the location of such boundary unless the same is indicated by dimensions shown on the map, shall be determined by the use of the scale appearing therein.

Except where riparian lands exist, zone boundary lines adjacent to the Raritan Bay are intended to be drawn to the landward side of the mean high water line.