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ICE EFFECTS ON STREAMFLOW During winter, ice formation may cause stage and discharge values to appear higher than expected. Ice effects may be minor (occurring only at night and early morning) with baseline flows obvious, or the effects may be major (stage constantly increases over several days or weeks) resulting in greatly erroneous discharge. Streamgages experiencing minor ice conditions will continue to display stage and discharge values to enable users to estimate the approximate base-line stage and discharge. Streamgages experiencing major ice conditions will have the discharge record temporarily disabled to prevent use of erroneous discharge values. The discharge record will resume when it is determined that ice conditions are no longer present. Daily mean discharges during periods of ice effect will be estimated after detailed data analysis.



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LOCATION--Lat 42o24'39", long 71o47'30", Worcester County, Hydrologic Unit 01070004, on left bank at downstream side of bridge on Muddy Pond Road, 1.5 mi upstream from mouth and 2.5 mi southwest of Sterling.
DRAINAGE AREA--29.1 mi2.

PERIOD OF RECORD--Low-flow partial record measurements in water years 1971-73, 1991-93. Continuous stage data recorder April 1994 to current year.
GAGE--Data Collection Platform with telephone telemeter. Elevation of gage is 400 ft above National Geodetic Vertical Datum of 1929, from topographic map. Telephone gage-height telemeter at station.
REMARKS--Stage-discharge relation affected by seasonal backwater from aquatic vegetation and occasional backwater from beaver dams. Adjustments for backwater are included in the computed record.

Daily and unit values precipitation data are calibrated and quality assured prior to publication by the Massachusetts-Rhode Island Water Science Center. Data are available upon request.

PERIOD OF RECORD--Water temperature and specific conductance, April 1998 to current year; precipitation October 1998 to current year.
INSTRUMENTATION--Water temperature and specific conductance monitor and heated tipping-bucket precipitation gage.

This gage is monitored in cooperation with the Massachusetts Department of Conservation and Recreation, Division of Water Supply Protection, Office of Watershed Management, with funding from the Massachusetts Water Resources Authority .

Link to Department of Conservation and Recreation

Link to Massachusetts Water Resources Authority

Photo of Stillwater River Gage. Link to the DCR.

Photo of Stillwater gage

Boating safety tips
This station managed by the Northborough MA Field Office.

Available Parameters Available Period
All 5 Available Parameters for this site
00010 Temperature, water 2007-10-01  2017-09-20
00045 Precipitation 2007-10-01  2017-09-20
00060 Discharge 1994-04-21  2017-09-20
00065 Gage height 2007-10-01  2017-09-20
00095 Specific cond at 25C 2007-10-01  2017-09-20

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Days  (7)

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Summary of all available data for this site
Instantaneous-data availability statement

Discharge, cubic feet per second

Most recent instantaneous value: 7.24 09-20-2017   12:30 EDT
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Daily discharge, cubic feet per second -- statistics for Sep 20 based on 23 years of record more
Median Most Recent
Value Sep 20
Mean 75th
0.19 2.0 5.9 7.24 12 18 62.0

Gage height, feet

Most recent instantaneous value: 4.28 09-20-2017   12:30 EDT
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