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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°29’32", long
71°37’43", Washington County, Hydrologic Unit 01090005, town
of Richmond, about 50 ft south of Rt 138, about 75 ft west of Beaver
River, and 3.3 mi north of Kenyon in Richmond.
AQUIFER--Sand and gravel, glaciated regions; stratified deposits, undifferentiated aquifer.
WELL CHARACTERISTICS--Drilled observation water-table well, depth 40 ft, cased to 40 ft, screened 37 to 40 ft.
INSTRUMENTATION--Data Collection Platform with satellite telemeter, May 2008 to current year. Digital recorder, June 1988 to May 2008. Continuous graphic recorder, December 1975 to May 1988.
DATUM--Elevation of land-surface datum of gage is 115.56 ft above National Geodetic Vertical Datum of 1929. Measuring point: floor of shelter, 0.59 ft above land-surface datum, Aug. 1, 2005 to present.
PERIOD OF RECORD--December 1975 to current year.
COOPERATION BY--Rhode Island Water Resources Board.