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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
01110500 BLACKSTONE RIVER AT NORTHBRIDGE, MA
LOCATION - Lat 42°09'13", long 71°39'09" referenced to North American Datum of 1927, Worcester County, MA, Hydrologic Unit 01090003, on left bank, 100 ft downstream from Sutton Street Bridge, Northbridge, MA and 3.0 mi downstream from Quinsigamond River.
DRAINAGE AREA - 141 mi².
REVISIONS HISTORY - WSP 1301: 1940 (M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - Gage height: October 2003 to current year.
Discharge records: October 1939 to September 1977; October 1995 to September 2003. October and November 1939, monthly discharge only.
Water-quality records: Water years, 1955, 1958, 1971.
GAGE - Data Collection Platform with satellite telemeter. Datum of gage is 254.30 ft above NAVD 1988, estimated from topographic map. Prior to May 4, 2020, datum of gage reported as 255 ft above NGVD 1929, estimated from topographic map.
COOPERATION - Massachusetts Department of Conservation and Recreation, Office of Water Resources; and Massachusetts Department of Environmental Protection, Office of Watershed Management.
REMARKS - Records are good. Missing periods are not estimated. Gage height affected by three upstream waste-water treatment plants and upstream and downstream reservoirs.
EXTREMES OUTSIDE PERIOD OF RECORD - Stage and discharge of flood of Aug. 20, 1955, are the greatest since at least 1900. Flood of Mar. 19, 1936, reached a stage of 13.7 ft from floodmarks, discharge, 7,510 ft³/s by computation of flow over dam 800 ft upstream.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 16,900 ft³/s, Aug. 20, 1955, gage height, 16.74 ft, from rating curve extended above 3,800 ft³/s on basis of computation of flow over dam at gage height 13.7 ft and slope-area measurement at gage height 16.74 ft; maximum gage height, 17.53 ft, Aug. 20, 1955, backwater from debris; minimum daily discharge, 2.0 ft³/s, Aug. 29, 1941, Sept. 5, 1942, Aug. 28, 1957.
EXTREMES FOR 2015 WATER YEAR: Maximum gage height, 7.01 ft, Dec. 9, 2014; minimum gage height, 2.89 ft, May 19, 2015.
EXTREMES FOR 2015 WATER YEAR: Maximum gage height, 7.01 ft, Dec. 9, 2014; minimum gage height, 2.89 ft, May 19, 2015.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water-quality records: Water years, 1955, 1958, 1971.
