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Water-Year Summary for Site 01129500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00010 Temperature, water(Min.,Max.,Mean)  
00060 Discharge(Mean)  

Water year 2023: 2023-10-01 to 2024-09-30

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USGS Water-Year Summary 2023
LOCATION - Lat 44°44'59", long 71°37'54" referenced to North American Datum of 1927, Coos County, NH, Hydrologic Unit 01080101, on left bank, at North Stratford, 400 ft. downstream from Nulhegan River, 0.3 miles downstream of Vermont State Highway 105 bridge, 12.0 miles southwest of Colebrook, and at mile 344.5.
DRAINAGE AREA - 799 mi².
REVISIONS HISTORY - WSP 781: 1934(M). WSP 891: Drainage area.
PERIOD OF RECORD - August 1930 to current year.
GAGE - Water-stage recorder. Datum of gage is 879.80 ft above North American Vertical Datum of 1988.
COOPERATION - USGS Federal Priority Streamgage Program

WATER YEARS 2014-19: Records good except those for estimated discharges, which are poor.

WATER YEAR 2020: Records good except those for estimated discharges, April 14 to June 15, which are fair, and for periods of estimated record, December 19 to March 8, which are poor.

WATER YEARS 2021, 2022: Records good except those for estimated discharges, which are poor.

Flow regulated by power plants and by First Connecticut and Second Connecticut Lakes and Lake Francis 36 mi upstream.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 32,300 ft³/s, March 31, 1998, gage height 15.63 ft; maximum gage height, 20.60 ft (ice jam), March 6, 1979, from floodmarks in well.
PERIOD OF RECORD - June 1999 to September 30, 2005 and October 1, 2007 to current year.
INSTRUMENTATION - Water-temperature recorder since June 16, 1999 provides continuous recordings.

WATER YEARS 2014-19, 2022: Records good.

WATER YEAR 2020-21: Records fair.