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 NGVD 1929, April 7, 2010; lowest
measured, 0.98 ft above NGVD 1929, December 21, 1976.