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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 41°45'53", long 71°38'10"
referenced to North American Datum of 1927, Providence County, RI,
Hydrologic Unit 01090004, on left bank 500 ft downstream from bridge on
Old Plainfield Pike, and 2.2 mi southeast of Rockland.
DRAINAGE AREA--4.32 mi2.
PERIOD OF RECORD--Water years 1992 to November 2014.
PERIOD OF DAILY RECORD --Specfic Conductance-- January 2000 to May 2001, October 2001 to current year. Water Temperature-- January 2000 to May 2001, October 2001 to current year.
GAGE --Data Collection Platform with telephone telemeter.Specific conductance and water temperature water-quality monitor since January 2000.
REMARKS --Records fair for specific conductance and water temperature.
COOPERATION BY--Providence Water Supply Board