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	Merrimack River Watershed Council, Inc


	Watershed - Geography - Subwatersheds	Join Volunteer Sponsors Events News
	Subwatersheds The Merrimack basin has been divided into 17 subwatersheds. A subwatershed is an area from which groundwater and surface water drains and contributes to flow in another body of water. For example, the Piscataquog River is a subwatershed because it eventually drains into the Merrimack River. Figure 1 shows the location of each subwatershed. •Beaver (94.66) • Cohas (69.97) • Contoocook (765.66) • Merrimack (576.63) • Nashua (530.7) • Pemigewasset (1,001.71) • Piscataquog (216.38) • Pow Wow (58.63) • Salmon Brook (31.75) • Shawsheen (78.09) • Soucook (91.66) • Souhegan (219.64) • Spicket (77.49) • Stony Brook (45.53) • SuAsCo (Sudbury/Assabet/Concord - 399.62) • Suncook (257.10) • Winnipesaukee (484.41) The subwatersheds of the Merrimack River are as above, with their approximate square mileage presented in parenthesis (information calculated by Merrimack River Watershed Council using Geographic Information Systems data compiled by the Merrimack Valley Planning Commission for planning purposes only).
	Merrimack River Watershed Council, Inc. 600 Suffolk Street, Fifth Floor Lowell, MA 01854 Phone: 978.275.0120 FAX: 978.275.0125	www.merrimack.org

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Watershed - Geography - Subwatersheds