South Branch Ashuelot River

River in New Hampshire, United States

South Branch Ashuelot River
The South Branch in East Swanzey
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Location
Country	United States
State	New Hampshire
County	Cheshire
Towns	Troy, Marlborough, Swanzey
Physical characteristics

Source	Confluence of Rockwood Brook and Quarry Brook
• location	Troy
• coordinates	42°49′39″N 72°10′42″W / 42.82750°N 72.17833°W / 42.82750; -72.17833
• elevation	955 ft (291 m)

Mouth	Ashuelot River
• location	Swanzey
• coordinates	42°53′21″N 72°16′57″W / 42.88917°N 72.28250°W / 42.88917; -72.28250
• elevation	463 ft (141 m)
Length	17.4 mi (28.0 km)
Basin features
Tributaries
• left	Bridge Brook, Martin Brook
• right	Shaker Brook, Forbush Brook

The South Branch of the Ashuelot River is a 17.4-mile-long (28.0 km) river located in southwestern New Hampshire in the United States. It is a tributary of the Ashuelot River, itself a tributary of the Connecticut River, which flows to Long Island Sound.

The South Branch begins in the town of Troy, New Hampshire, at the confluence of Rockwood Brook and Quarry Brook. The river flows in a zigzag manner northwest, then southwest, then north to the Ashuelot River in Swanzey. On the river's northwest-flowing leg, it drops rapidly as it cuts a deep, narrow valley through the highlands of Troy and Marlborough. New Hampshire Route 12 and an abandoned railroad line follow the river along this section. When the river turns southwest, the valley widens, except for a brief section where the river passes the village of East Swanzey. The final, north-flowing leg of the river is through a broad, flat intervale, where the river makes numerous tight meanders.

References

New Hampshire GRANIT state geographic information system

Rivers of New Hampshire by drainage system

Gulf of Maine

Atlantic coastal tributaries	Blackwater River Browns River Drakes River Hampton River Hampton Falls River Little River Old River Taylor River
Merrimack River watershed	Baboosic Brook Back River Baker River Bear Brook Beards Brook Beaver Brook Beebe River Big River Black Brook Blackwater River Cockermouth River Cohas Brook Contoocook River East Branch Baker River East Branch Pemigewasset River Fowler River Frazier Brook Gridley River Gunstock River Lane River Little River (Big River) Little River (Merrimack River) Little Massabesic Brook-Sucker Brook Little Suncook River Lost River Mad River Melvin River Merrimack River Merrymeeting River Middle Branch Piscataquog River Moosilauke Brook Nashua River Newfound River Nissitissit River North Branch Contoocook River North Fork East Branch Pemigewasset River Nubanusit Brook Pemigewasset River Pennichuck Brook Piscataquog River Powwow River Purgatory Brook Red Hill River Salmon Brook Shedd Brook Smith River Soucook River Souhegan River South Branch Baker River South Branch Piscataquog River South Branch Souhegan River Spicket River Squam River Stony Brook Suncook River Tioga River Turkey River Warner River West Branch Mad River West Branch Souhegan River West Branch Warner River Winnipesaukee River
Merrymeeting Bay (Androscoggin River watershed)	Androscoggin River Chickwolnepy Stream Clear Stream Dead River Dead Diamond River East Branch Dead Diamond River Little Dead Diamond River Little Magalloway River Magalloway River Middle Branch Dead Diamond River Middle Branch Little Magalloway River Mollidgewock Brook Moose Brook Moose River Peabody River Rattle River South Branch Little Dead Diamond River Swift Diamond River West Branch Dead Diamond River West Branch Little Dead Diamond River West Branch Little Magalloway River West Branch Magalloway River West Branch Peabody River Wild River
Piscataqua River watershed	Bean River Bellamy River Berrys River Branch River Bunker Creek Cochecho River Ela River Exeter River Fresh River Isinglass River Jones Brook Lamprey River Little River (Brentwood) Little River (Exeter) Little River (Lamprey River) Mad River North River North Branch River Oyster River Pawtuckaway River Piscassic River Piscataqua River Rattlesnake River Salmon Falls River Squamscott River Winnicut River
Saco Bay (Saco River watershed)	Bearcamp River Beech River Chocorua River Cold River (Bearcamp River) Cold River Cutler River Dan Hole River Deer River Dry River East Branch Saco River East Branch Whiteface River East Fork East Branch Saco River Ellis River Little Cold River Lovell River Mad River Middle Branch Mad River Mill Brook New River Ossipee River Pequawket Brook Pine River Rocky Branch Saco River Sawyer River Shepards River South River South Branch Mad River Swift River (Bearcamp River) Swift River (Saco River) West Branch Whiteface River Wildcat Brook Wonalancet River

Long Island Sound

Connecticut River watershed

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References