Science & Tech
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This site is the location of the longest continuous stream gaging in New Hampshire. Daily measurement of the level of the Pemigewasset River began here in 1886 by the Locks and Canals Company of Lowell, Massachusetts, which controlled flowage in the Merrimack River and its headwaters. In 1903, with funding from the State of New Hampshire, the U.S. Geological Survey began measuring the discharge of the river to determine available waterpower and the effects of White Mountain deforestation. The original gage stood on the abutment of a covered bridge at this site, and the concrete gaging station just downstream dates from 1926.
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Plymouth, New Hampshire · United States
