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The Middlesex Canal was a 27-mile (44-kilometer) barge canal connecting the Merrimack River with the port of Boston.When operational it was 30 feet (9.1 m) wide, and 3 feet (0.9 m) deep, with 20 locks, each 80 feet (24 m) long and between 10 and 11 feet (3.0 and 3.4 m) wide.
The Merrimack River (or Merrimac River, an occasional earlier spelling [1]) is a 117-mile-long (188 km) river [2] in the northeastern United States. It rises at the confluence of the Pemigewasset and Winnipesaukee rivers in Franklin, New Hampshire, [3] flows southward into Massachusetts, and then flows northeast until it empties into the Gulf of Maine at Newburyport.
The location was chosen because of the water-power potential of the Merrimack River and the already-existing Pawtucket Canal, linking the Merrimack with the Concord River. [5] At Lowell, the Merrimack drops 9 metres (30 ft) over a distance of 2 kilometres (1.2 mi), thereby suitable to provide 7,460 kilowatts (10,000 hp).
Blackwater River. Little River; Merrimack River watershed. Merrimack River. Back River (Merrimack River tributary) Powwow River. Back River (Lake Attitash)
The Proprietors of Locks and Canals on Merrimack River is a limited liability corporation founded on June 27, 1792, [1] making it one of the oldest corporations in the United States. Its named incorporators were Dudley Atkins Tyng, William Coombs, Joseph Tyler, Nicholas Johnson, and Joshua Carter.
A footpath along the Merrimack Canal from the visitor center is lined with plaques describing the importance of various existing and former sites along the canal. The Boott Mills along the Merrimack River, on the Eastern Canal, is the most fully restored manufacturing site in the district, and one of the oldest. The Boott Mill provides a walk ...
Sagamore Bridge: Circumferential Highway: Nashua and Hudson: 1973 (twinned in 2000) WN&R / B&M RR Bridge: 1847 WN&R Railroad - Abutments remain: Taylor Falls Bridge
The Tyngsborough Bridge is a steel tied-arch bridge located in Tyngsborough, Massachusetts and carries Route 113 over the Merrimack River.With a span of 547 feet, it has the longest span of any steel rib through arch bridges in Massachusetts.