Description
Heads at 422816N0711600W, 1.5 mi SE of Bedford flows NE for 26.7 miles to the Merrimack River 0.8 mi N of North Andover; City of Lawrence and Towns of North Andover, Andover, Tewksbury, Billerica, Wilmington and Bedford.
History
Indian name meaning "falls ", "it is smooth or glossy" (Douglas-Lithgow 1909).