The Berrys River is a 12.9 mile long (20.7 km) river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 located in southeastern New Hampshire

New Hampshire

New Hampshire is a state in the New England region of the northeastern United States of America. The state was named after the southern English county of Hampshire. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Atlantic Ocean to the east, and the Canadian...

 in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is a tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 of the Isinglass River

Isinglass River

The Isinglass River in Strafford County, southeastern New Hampshire, the United States, is about 15 miles long. It rises at Bow Lake in Strafford, but is also fed through its tributaries by Ayer's, Nippo, Round and Long Ponds in Barrington. The Isinglass flows east to meet the Cochecho River below...

, part of the Cocheco River

Cochecho River

The Cochecho River or Cocheco River is a tributary of the Piscataqua River, 38.3 miles long, in the U.S. state of New Hampshire. It rises in northern Strafford County and runs southeastward, through the town of Farmington and the cities of Rochester and Dover, where it provides hydroelectric power...

/Piscataqua River

Piscataqua River

The Piscataqua River, in the northeastern United States, is a long tidal estuary formed by the confluence of the Salmon Falls and Cocheco rivers...

 watershed

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 leading to the Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

.

The river rises in Farmington, New Hampshire

Farmington, New Hampshire

Farmington is a town located in Strafford County, New Hampshire, USA. The 2010 census reported that the town had a total population of 6,786. Farmington is home to Blue Job State Forest....

 and flows southeast past Blue Job Mountain

Blue Job Mountain

Blue Job Mountain is a mountain in Farmington, New Hampshire. It has a fire tower at the summit, and numerous trails, most commonly accessed from First Crown Point Road in neighboring Strafford, crisscross the mountain. Blue Job Mountain State Forest occupies around the summit....

. Turning south, the river passes through the eastern corner of Strafford

Strafford, New Hampshire

Strafford is a town in Strafford County, New Hampshire, United States. The population was 3,991 at the 2010 census. The two main settlements in town are the villages of Center Strafford and Bow Lake Village.- History :...

 and enters Barrington

Barrington, New Hampshire

Barrington is a town in Strafford County, New Hampshire, United States. The population was 8,576 at the 2010 census. The town is a woodland, farm and bedroom community.-History:...

, where it is interrupted by Long Pond. One mile below the pond, the Berrys River reaches the Isinglass.