The Suncook River is a 35.7-mile-long (57.5 km) river located in central New Hampshire in the United States. It is a tributary of the Merrimack River, which flows to the Gulf of Maine.
The Suncook River in the center of Suncook, NH
The old and new channels of the Suncook River, as seen from space
The Merrimack River is a 117-mile-long (188 km) river in the northeastern United States. It rises at the confluence of the Pemigewasset and Winnipesaukee rivers in Franklin, New Hampshire, flows southward into Massachusetts, and then flows northeast until it empties into the Gulf of Maine at Newburyport. From Pawtucket Falls in Lowell, Massachusetts, onward, the Massachusetts–New Hampshire border is roughly calculated as the line three miles north of the river.
Mouth of Merrimack River in Newburyport, Massachusetts, in 2021
The Merrimack River in Pembroke, New Hampshire
The Merrimack as it flows from Haverhill to its mouth in Newburyport, Massachusetts
Merrimack River in Lowell, Mass.