USGS Water-Year Summary 2023

01082000 CONTOOCOOK RIVER AT PETERBOROUGH, NH

LOCATION - Lat 42°51'45", long 71°57'35" referenced to North American Datum of 1927, Hillsborough County, NH, Hydrologic Unit 01070003, on left bank, 1,200 ft downstream from Noone falls mill dam, 0.3 mi northeast of Noone, NH, 1.2 mi south of Town Hall in Peterborough, and 1.3 mi upstream from Nubanusit Brook.

DRAINAGE AREA - 68.1 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - Discharge records: July 1945 to September 1977, October 2001 to current year. Partial-record station: October 1978 to September 2001. Peak streamflow: Water years 1938, 1946 to current. Water-quality discrete samples: Water years 1974 to 1977, 1985 to 1999. Miscellaneous discharge measurements: Waters years 1978, 1980 to 1986, 1989 to 2001.

GAGE - Water-stage recorder. The datum of gage is 731.25 ft above North American Vertical Datum of 1988.

COOPERATION - USGS Federal Priority Streamgage Program and the U.S. Army Corps of Engineers, New England District.

REMARKS - WATER YEAR 2014-22: Records good except those for estimated discharges, which are poor. Flow regulated by mill and reservoirs upstream; regulation greater prior to 1965.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood in September 1938 reached a stage of about 15 ft, from information by local residents.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 4,110 ft³/s, April 16, 2007, gage height, 7.21 ft.