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ICE EFFECTS ON STREAMFLOW
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.
LOCATION--Lat 42 06'17", long 71 36'28",
Worcester County, Hydrologic Unit 01090003, on right bank 250 ft
downstream from West Hill Dam, 2.2 mi northeast of Uxbridge, and 3.5 mi
upstream from mouth.
DRAINAGE AREA--27.9 mi2.
PERIOD OF RECORD--March 1962 to current year (data publication discontinued September 30, 1990).
REVISED RECORDS--WDR MA-RI-83-1: 1982(M).
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 234.35 ft above sea level (U.S.Army Corps of Engineers benchmark).
REMARKS--Flow regulated by West Hill Reservoir (station 01111195), usable capacity, 542,000,000 cubic feet.
COOPERATION BY--U.S. Army Corps of Engineers
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