Click
to
hide
Water-Year
Summary
instructions
and
information
- 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.
USGS Water-Year Summary 2024
01095220 STILLWATER RIVER NEAR STERLING, MA
LOCATION - Lat 42°24'39", long 71°47'30" referenced to North American Datum of 1927, Worcester County, MA, Hydrologic Unit 01070004, on left bank at downstream side of bridge on Muddy Pond Road, 1.5 mi upstream of mouth and 2.5 mi southwest of Sterling.
DRAINAGE AREA - 29.1 mi² of which 29.1 mi² probably is noncontributing.
REVISIONS HISTORY - Annual peak discharges for water years 1995-97 and 1999-2005; Specific conductance for the 2007 water year.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge: April 1994 to current year. Low-flow partial-record discharge measurements made in water years 1971-73, 1991-93.
GAGE - Data collection Platform with satellite telemeter. Datum of gage is 399.28 ft above NAVD 1988, estimated from topographic map. Prior to May 13, 2020, datum of gage reported as 400 ft above NGVD 1929, estimated from topographic map
COOPERATION - Massachusetts Department of Conservation and Recreation, Division of Water Supply Protection, Office of Watershed Management.
REMARKS - Records fair except those for discharges less than 10 cfs and those for estimated daily discharges, which are poor.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - Precipitation: October 1998 to current year.
INSTRUMENTATION - Heated tipping-bucket precipitation gage with telephone telemeter.
REMARKS - Records are good except those for June 28 to July 24, 2015, which are poor. Periods of missing record are not estimated.
WATER-QUALITY RECORDS
PERIOD OF RECORD - April 1998 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: April 1998 to current year.
WATER TEMPERATURE: April 1998 to current year.
INSTRUMENTATION - Specific conductance and water temperature water-quality monitor.
REMARKS - Specific conductance and water temperature records are good. Periods of missing record are not estimated.
EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum recorded, 578 uS/cm, Jan. 20, 2019; minimum, 43 uS/cm, June 14, 1998
WATER TEMPERATURE: Maximum recorded, 27.6°C, July 6, 1999; minimum, -0.6°C, Dec. 9, 2005, Jan. 15 and 16, 2006.
SPECIFIC CONDUCTANCE: Maximum recorded, 578 uS/cm, Jan. 20, 2019; minimum, 43 uS/cm, June 14, 1998
WATER TEMPERATURE: Maximum recorded, 27.6°C, July 6, 1999; minimum, -0.6°C, Dec. 9, 2005, Jan. 15 and 16, 2006.
