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The Sudbury River is a tributary of the Concord River in Middlesex County, Massachusetts, in the United States.〔U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. (The National Map ), accessed October 3, 2011〕 Originating in the Cedar Swamp in Westborough, Massachusetts, near the boundary with Hopkinton, it meanders generally northeast, through Fairhaven Bay, and to its confluence with the Assabet River at Egg Rock in Concord, Massachusetts, to form the Concord River. It has a drainage area. On April 9, 1999, nearly of the river were "recognized for their outstanding ecology, history, scenery, recreation values, and place in American literature," by being designated as a part of the National Wild and Scenic Rivers System. The segment of the Sudbury River beginning at the Danforth Street Bridge in the town of Framingham, downstream to the Route 2 bridge in Concord, is designated as a Scenic River, and the segment from the Route 2 bridge downstream to its confluence with the Assabet River at Egg Rock is designated as a Recreational River, along with adjoining stretches of the Assabet and Concord rivers.〔"National Wild and Scenic Rivers - Sudbury, Assabet and Concord Rivers - Massachusetts"; http://www.rivers.gov/wsr-suasco.html〕 Mercury contamination was discovered in the 1970s from the Nyanza plant in Ashland.〔http://www.sudburyriver.org/id13.html〕 The EPA subsequently listed the town as a toxic site and led a cleanup effort to repair the damage. It is still recommended that fish caught downriver not be eaten. Image:Sudbury River, Wayland MA.jpg|Sudbury River in Wayland ==References== * 〔http://www.sudburyriver.org/index.html 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「Sudbury River」の詳細全文を読む スポンサード リンク
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