PROVISIONAL DATA SUBJECT TO REVISION
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LOCATION.--Lat 41°03'49.8", long
72°22'20.5" referenced to North American Datum of
1983, Suffolk County, NY, Hydrologic Unit 02030202, at west
side of Rocky Point Avenue, 400 ft south of Belvedere Avenue,
West Neck, Shelter Island.
WELL CHARACTERISTICS.--Depth 56 ft. Upper casing diameter 6 in; top of first opening 44 ft, bottom of last opening 54 ft.
DATUM.--Land-surface datum is 32.3 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of steel flange, 1.82 ft below land-surface datum, 30.48 ft above land-surface datum, Oct. 22, 1969 to present.
PERIOD OF RECORD.--June 1974 to current year.
GAGE.--Measurement with chalked steel tape by United States Geological Survey personnel.
REMARKS.--Water level affected by tidal fluctuation.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 4.47 ft above sea level, April 7, 2010; lowest measured, 0.98 ft above sea level, December 21, 1976.
WELL CHARACTERISTICS.--Depth 56 ft. Upper casing diameter 6 in; top of first opening 44 ft, bottom of last opening 54 ft.
DATUM.--Land-surface datum is 32.3 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of steel flange, 1.82 ft below land-surface datum, 30.48 ft above land-surface datum, Oct. 22, 1969 to present.
PERIOD OF RECORD.--June 1974 to current year.
GAGE.--Measurement with chalked steel tape by United States Geological Survey personnel.
REMARKS.--Water level affected by tidal fluctuation.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 4.47 ft above sea level, April 7, 2010; lowest measured, 0.98 ft above sea level, December 21, 1976.
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