USGS Water-Year Summary 2023
01333000 GREEN RIVER AT WILLIAMSTOWN, MA
LOCATION - Lat 42°42'32", long 73°11'50" referenced to North American Datum of 1927, Berkshire County, MA, Hydrologic Unit 02020003, on left bank 0.11 mi upstream from bridge on State Highway 2 at Williamstown and 0.81 mi upstream from mouth. Prior to July 12, 2016, on left bank 0.1 mi upstream from bridge on State Highway 2 at Williamstown and 0.8 mi upstream from mouth.
DRAINAGE AREA - 42.6 mi².
REVISIONS HISTORY - WDR MA-RI-84-1: 1977-78(P), 1979, 1980-83(P). The maximum discharges for water years 2018 and 2019 were revised on Jul. 14, 2022, based on changes to the stage-discharge rating. Discharge for the period Feb. 3, 2022, to Feb. 4, 2022, was revised on Jan. 11, 2023, based on changes to the ice estimated period.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge: September 1949 to current year. Water-quality records: water years 1967-69.
GAGE - Water-stage recorder with satellite telemeter. Datum of gage is 610.55 ft above NAVD of 1988. Prior to July 12, 2016, water-stage recorder on left bank 50 ft downstream at same datum.
COOPERATION - Massachusetts Department of Conservation and Recreation, Office of Water Resources.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water-quality records: Water years 1967-69.