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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.
42°21’52", long 71°46’33", Worcester County,
Hydrologic Unit 01070004, on right bank, about 250 ft upstream from
Wachusett Reservoir near West Boylston.
DRAINAGE AREA--3.13 mi2.
PERIOD OF RECORD--December 2011 to present. Miscellaneous discharge measurements made in water years 1994, 1995, 1999 to 2011.
GAGE--Water-stage sensor(radar) and water-temperature sensor with data-collection platform updated hourly. Elevation of gage is about 420 ft above NAVD 1988, from digital map.
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 .
Value Feb 21