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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.


* IMPORTANT: Next Generation Station Page

USGS 421923072451001 MA-WXW 20 WESTHAMPTON, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42°19'23", long 72°45'10", Hampshire County, Hydrologic Unit 01080206, well located 20 ft north of Northwest Road in Westhampton, MA.
AQUIFER--Glacial sand and gravel of the Pleistocene age.
WELL CHARACTERISTICS--Augered observation water-table well, diameter 2.0 in, depth 42 ft, screened 32 to 42 ft..
INSTRUMENTATION--Digital recorder with satellite telemeter, January 2018 to current year. Monthly measurements prior to January 2018.
DATUM--Elevation of land-surface datum of well is 1175 ft above National Geodetic Vertical Datum of 1929, from digital map. Measuring point: top of steel pipe in shelter, 3.00 ft above land-surface datum.
PERIOD OF RECORD-- July 1987 to current year.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Office of Water Resources.


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2017-09-22  2020-02-17








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