Stony Brook is a tributary of the
Merrimack River
The Merrimack River (or Merrimac River, an occasional earlier spelling) is a river in the northeastern United States. It rises at the confluence of the Pemigewasset and Winnipesaukee rivers in Franklin, New Hampshire, flows southward into M ...
in northeastern
Massachusetts
Massachusetts ( ; ), officially the Commonwealth of Massachusetts, is a U.S. state, state in the New England region of the Northeastern United States. It borders the Atlantic Ocean and the Gulf of Maine to its east, Connecticut and Rhode ...
, joining the Merrimack at
Chelmsford
Chelmsford () is a city in the City of Chelmsford district in the county of Essex, England. It is the county town of Essex and one of three cities in the county, along with Colchester and Southend-on-Sea. It is located north-east of London ...
.
Its watershed includes the towns of
Boxborough,
Harvard
Harvard University is a private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher lear ...
,
Littleton,
Ayer,
Groton,
Westford,
Tyngsborough, and Chelmsford.
Its farthest upstream tributary is Beaver Brook, originating in Wolf Swamp in Boxborough, upstream (southwest) of the mouth of Stony Brook in the Merrimack. Beaver Brook passes through Mill Pond in the center of Littleton and ends at Forge Pond at
Forge Village in Westford.
Stony Brook originates as the dammed outlet of Forge Pond and continues northeast past
Graniteville, the Stony Brook Reservoir (not to be confused with the
Stony Brook Reservoir in Weston and Waltham), Westford Station,
Nabnasset, Brookside Station, and West Chelmsford, reaching the Merrimack at
North Chelmsford.
Stony Brook is parallel through its course by the
Stony Brook Railroad.
References
Rivers of Middlesex County, Massachusetts
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