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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.
70o01'49", Barnstable County,
Hydrologic Unit 01090002, 50 ft east of entrance to Nickerson State
Park and 50 ft south of Rt 6A in Brewster.
AQUIFER--Sand and gravel, glaciated regions; outwash deposits.
WELL CHARACTERISTICS--Augered observation water-table well, diameter 1.25 in., depth 52 ft, screened 49 to 52 ft.
INSTRUMENTATION--Data Collection Platform with satellite telemeter since December 2001. Monthly measurements prior to December 2001.
DATUM--Elevation of land-surface datum is 50.45 ft above National Geodetic Vertical Datum of 1929.
PERIOD OF RECORD--November 1962 to current year. Prior to October 1974, published in Massachusetts Hydrologic-Data Report No. 17.
REMARKS--Ground-water level affected by tidal fluctuations of about 0.03 ft.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Office of Water Resources.