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The Nashua River, long,〔U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. (The National Map ), accessed October 3, 2011〕 is a tributary of the Merrimack River in Massachusetts and New Hampshire in the United States. It is formed in eastern Worcester County, Massachusetts, by junction of its north and south branches near Lancaster, and flows generally north-northeast past Groton to join the Merrimack at Nashua, New Hampshire. The Nashua River Watershed occupies a major portion of north-central Massachusetts and a much smaller portion of southern New Hampshire. The north branch rises west of Fitchburg and Westminster. It flows about generally southeast past Fitchburg, and joins the south branch about below its issuance from the Wachusett Reservoir. ==History== The Nashua River was heavily used for industry during the colonial period and the early United States. During the late 18th century and early 19th century, the heavy concentration of paper mills and the use of dyes near Fitchburg resulted in pollution that notoriously turned the river various colors downstream from the factories. In the mid-1960s, Marion Stoddart started a campaign to restore the Nashua River and its tributaries. She built coalitions with labor leaders and business leaders, in particular the paper companies who were the worst polluters of the river. With federal help, eight treatment plants were built or upgraded along the river. A broad conservation buffer was created along about half the river and its two main tributaries. By the early-1990s, most of the industry was still located along the river, but many parts of the river were once again safe for swimming. Her work is the subject of a 30-minute documentary movie.〔("Work of 1000" movie )〕 Recovery has sparked recreational use of the river at places like Mine Falls Park in Nashua. The largely volunteer Nashua River Watershed Association, based in Groton, Massachusetts, oversees the condition of the river.〔(Nashua River Watershed Association )〕 On January 23, 2013, Rep. Niki Tsongas introduced the Nashua River Wild and Scenic River Study Act (H.R. 412; 113th Congress), a bill that would amend the Wild and Scenic Rivers Act to designate certain segments concerning the Nashua River for study for potential addition to the National Wild and Scenic Rivers System.〔(【引用サイトリンク】url=https://beta.congress.gov/bill/113th-congress/house-bill/412 )〕 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「Nashua River」の詳細全文を読む スポンサード リンク
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