Beaver Brook (Merrimack River tributary) facts for kids

Quick facts for kids Beaver Brook
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Country	United States
States	New Hampshire, Massachusetts
Counties	Rockingham and Hillsborough, NH; Middlesex, MA
Towns and cities	Chester, Derry, Londonderry, Windham, Hudson and Pelham, NH; Dracut and Lowell, MA
Physical characteristics
Main source	Chester, Rockingham County, NH 435 ft (133 m) 42°57′18″N 71°16′36″W / 42.95500°N 71.27667°W / 42.95500; -71.27667
River mouth	Merrimack River Lowell, Middlesex County, MA 55 ft (17 m) 42°39′30″N 71°19′6″W / 42.65833°N 71.31833°W / 42.65833; -71.31833
Length	30.7 mi (49.4 km)
Basin features
Tributaries	Left: West Running Brook, Golden Brook, Peppermint Brook Right: Shields Brook, Gumpas Pond Brook, Double Brook

Beaver Brook is a 30.7-mile-long (49.4 km) river located in New Hampshire and Massachusetts in the United States. It is a tributary of the Merrimack River, part of the Gulf of Maine watershed.

Beaver Brook rises in Chester, New Hampshire, and flows south into Derry, passing through Harantis Lake, Adams Pond, and Beaver Lake. Continuing south, the brook forms the boundary between Londonderry and Windham, then flows through Pelham. The brook crosses the state line into Dracut, Massachusetts, and reaches the Merrimack River in the city of Lowell.

Most of the brook's course is through gently hilly terrain that is rapidly being converted into suburban land use.