Salmon Brook (Merrimack River)

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Salmon Brook
Origin Martins Pond
Mouth Merrimack River
Basin countries USA
Length 17.5 miles
Source elevation 280 feet at Groton, Massachusetts
Avg. discharge 150 ft³/s
Basin area 36 square miles

Salmon Brook is one of the 6 major tributaries of the Merrimack River in northeastern Massachusetts in the United States. Its watershed is 31 square miles and is one of the 14 subwatersheds of the Merrimack River. It passes through Groton, Dunstable, and Tyngsboro, Massachusetts, and then through Nashua, New Hampshire.

[edit] Route description

Salmon Brook begins at Martins Pond in Groton. It then flows approximately 17.5 miles north-northeast to the Merrimack River. It runs through Lost Lake/ Knopps Pond, Whitney Pond, and Massapoag Ponds. All of these water bodies are dammed. The brook runs roughly parallel to the Nashua River from Lost Lake to the brook's mouth in Nashua.