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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.



USGS 01111300 NIPMUC RIVER NEAR HARRISVILLE, RI

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 41o58'52", long 71o41'11", Providence County, Hydrologic Unit 01090003, on left bank 1.0 mi upstream from mouth and 1.2 mi northwest of Harrisville.
DRAINAGE AREA--16.0 mi2.
PERIOD OF RECORD--Discharge: March 1964 to September 1991, October 1993 to current year.
Water-quality records: Water year 1968.
GAGE--Data Collection Platform with Telephone telemeter. Elevation of gage is 340 ft above National Geodetic Vertical Datum (NGVD) of 1929, from topographic map.
COOPERATION BY--Rhode Island Department of Environmental Management

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Available Parameters Period of Record
  
1964-03-01  2019-12-06







 (365)
 

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


Discharge, cubic feet per second


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