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The Merrimack River or Merrimac River, an occasional earlier spelling) is a river〔U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. (The National Map ), accessed October 3, 2011〕 in the northeastern United States. It rises at the confluence of the Pemigewasset and Winnipesaukee rivers in Franklin, New Hampshire,〔(【引用サイトリンク】 title=The Voice of the Merrimack )〕 flows southward into Massachusetts, and then flows northeast until it empties into the Atlantic Ocean at Newburyport. From the point where the Merrimack turns northeast in Lowell, Massachusetts, onward, the Massachusetts–New Hampshire border is roughly calculated as the line three miles north of the river. The Merrimack is an important regional focus in both New Hampshire and Massachusetts. The central-southern part of New Hampshire and most of northeast Massachusetts is known as the Merrimack Valley. Several U.S. naval ships have been named the USS ''Merrimack'' and USS ''Merrimac'' in honor of this river. == History and details == Prior to glaciation, the Merrimack continued its southward course far beyond the present day New Hampshire-Massachusetts border to enter the Atlantic Ocean near Boston. Upon the glacier's retreat, debris deposited north of Boston filled the lower Merrimack Valley, redirecting the river into its current northeast bend at Lowell. The Neville archaeological site is located along the river's banks in New Hampshire. The total watershed of the river is approximately , covering much of southern New Hampshire and a portion of northeastern Massachusetts. On its banks are a number of cities built to take advantage of water power in the 19th century, when textile mills dominated the New England economy: Concord, Manchester, and Nashua in New Hampshire, and Lowell, Lawrence, and Haverhill in Massachusetts.〔Murphy, Cait and Roseanne Haggerty (April/May 2003). "(Reinventing a River )" ''American Heritage''. Retrieved 7-29-2010.〕 At the mouth of the river is the small city of Newburyport. Prior to the construction of the Middlesex Canal, Newburyport was an important shipbuilding city, in a location to receive New Hampshire timber that had been floated downriver. The river enters Massachusetts at the town of Tyngsborough and from there, winds past or through Chelmsford, Lowell, Dracut, Tewksbury, Andover, Methuen, Lawrence, North Andover, Haverhill, Groveland, West Newbury, Merrimac, Amesbury, Newburyport, and Salisbury. The river is perhaps best known for the early American literary classic ''A Week on the Concord and Merrimack Rivers'' by Henry David Thoreau. Among its tributaries are the Souhegan River, which extends west from the town of Merrimack, New Hampshire; the Nashua River, which flows north into the city of Nashua; the Concord River, which flows north from Concord, Massachusetts to Lowell; and the Shawsheen River, which after also flowing north, joins the Merrimack at Lawrence. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「The Merrimack River or Merrimac River, an occasional earlier spelling) is a riverU.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. (The National Map ), accessed October 3, 2011 in the northeastern United States. It rises at the confluence of the Pemigewasset and Winnipesaukee rivers in Franklin, New Hampshire,(【引用サイトリンク】 title=The Voice of the Merrimack ) flows southward into Massachusetts, and then flows northeast until it empties into the Atlantic Ocean at Newburyport. From the point where the Merrimack turns northeast in Lowell, Massachusetts, onward, the Massachusetts–New Hampshire border is roughly calculated as the line three miles north of the river.The Merrimack is an important regional focus in both New Hampshire and Massachusetts. The central-southern part of New Hampshire and most of northeast Massachusetts is known as the Merrimack Valley.Several U.S. naval ships have been named the USS ''Merrimack'' and USS ''Merrimac'' in honor of this river.== History and details ==Prior to glaciation, the Merrimack continued its southward course far beyond the present day New Hampshire-Massachusetts border to enter the Atlantic Ocean near Boston. Upon the glacier's retreat, debris deposited north of Boston filled the lower Merrimack Valley, redirecting the river into its current northeast bend at Lowell. The Neville archaeological site is located along the river's banks in New Hampshire.The total watershed of the river is approximately , covering much of southern New Hampshire and a portion of northeastern Massachusetts. On its banks are a number of cities built to take advantage of water power in the 19th century, when textile mills dominated the New England economy: Concord, Manchester, and Nashua in New Hampshire, and Lowell, Lawrence, and Haverhill in Massachusetts.Murphy, Cait and Roseanne Haggerty (April/May 2003). "(Reinventing a River )" ''American Heritage''. Retrieved 7-29-2010. At the mouth of the river is the small city of Newburyport. Prior to the construction of the Middlesex Canal, Newburyport was an important shipbuilding city, in a location to receive New Hampshire timber that had been floated downriver. The river enters Massachusetts at the town of Tyngsborough and from there, winds past or through Chelmsford, Lowell, Dracut, Tewksbury, Andover, Methuen, Lawrence, North Andover, Haverhill, Groveland, West Newbury, Merrimac, Amesbury, Newburyport, and Salisbury.The river is perhaps best known for the early American literary classic ''A Week on the Concord and Merrimack Rivers'' by Henry David Thoreau. Among its tributaries are the Souhegan River, which extends west from the town of Merrimack, New Hampshire; the Nashua River, which flows north into the city of Nashua; the Concord River, which flows north from Concord, Massachusetts to Lowell; and the Shawsheen River, which after also flowing north, joins the Merrimack at Lawrence.」の詳細全文を読む スポンサード リンク
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