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The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.

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LOCATION--Lat 42° 37’33.6", long 72° 51’15.1"(revised), Franklin County, Hydrologic Unit 01080203, on left bank 0.8 mi east of Charlemont, 2.5 mi downstream from Chickley River, and at mile 24.5.
PERIOD OF RECORD--Discharge: June 1913 to current year.
Water-quality records: Water years 1954–55, 1958, 1967–69, 1995.
REVISED RECORDS--WSP 781: 1915(M). WSP 1301: 1918(M). WDR MA-RI-84-1: drainage area.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 516.84 ft above NAVD 1988. Datum previously reported as 517.36 ft above NGVD 1929.
REMARKS--Flow regulated by Somerset Reservoir, since 1924 by Harriman Reservoir, and by several powerplants upstream. Telephone and satellite gage-height telemeter at station.
COOPERATION BY--Great River Hydro Company

For more information on the areal exent and depth of flood inundation during flooding at and near this streamgage go to the Flood Inundation Mapper
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This station managed by the Northborough MA Field Office.

Available Parameters Available Period
1990-10-01  2022-08-18
2007-10-01  2022-08-18


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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: 139 08-18-2022   12:30 EDT
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Daily discharge, cubic feet per second -- statistics for Aug 18 based on 109 water years of record more
Most Recent
Value Aug 18
Median Mean 75th
38.0 139 274 401 502 600 2400

Gage height, feet

Most recent instantaneous value: 1.85 08-18-2022   12:30 EDT
Graph of  Gage height, feet

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