Description
1.1 mi. long; heads in West Bradford Township 0.3 mi. SSE of Romansville, flows generally SSE into Newlin Township to enter West Branch Brandywine Creek 0.4 mi. N of Embreeville
History
Named in association with the Mason-Dixon Line; Charles Mason (1728-1786) and Jeremiah Dixon (1733-1779) established a temporary observatory near the stream in 1764.