If the boundary line between towns is formed wholly or partly by a stream or by a highway, a survey and plan of such stream or highway shall be made by said department, based on the triangulation common to the other town boundary lines, and the plan shall be filed in the office of said department.
Mass. Gen. Laws ch. 42, § 8
Boundaries formed by stream or highway; filing of plan
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.