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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°26’42", long
71°40’53", Washington County, Hydrologic Unit 01090005, on
right bank 10 ft downstream from bridge on Alton-Carolina road, 0.8 mi
northeast of Wood River Junction, 1.5 mi southwest of Carolina, and
2.9 mi upstream from Wood River.
DRAINAGE AREA--100 mi2.
PERIOD OF RECORD--October 1940 to current year. October and November 1940, monthly discharge only, published in WSP 1301. Prior to October 1943, published as Charles River at Wood River Junction.
REVISED RECORDS--WSP 1051: drainage area. WSP 1201: 1948.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 42.94 ft above NAVD 1988. Datum of gage previously reported as 43.86 ft above NGVD 1929. Prior to June 19, 1984, at site 10 ft upstream at same datum.
REMARKS--Occasional regulation by fish hatchery on White Brook. Prior to 1972, occasional regulation at low flow by powerplant and mills upstream; regulation greater prior to 1969. Annual mean discharge for period of record shown in summary statistics does not include the 1941 water year.
COOPERATION BY-- U.S. Geological Survey Federal Network
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