LOCATION.--Lat 40°47'51.0", long
73°24'08.1" referenced to North American Datum of
1983, Suffolk County, NY, Hydrologic Unit 02030202, northeast
corner of East Neck Road. Entrance to The Greens at Half
Hollow.
WELL CHARACTERISTICS.--Depth 87.2 ft. Upper casing
diameter 2 in; top of first opening 77.2 ft, bottom of last
opening 82.2 ft.
PERIOD OF RECORD.--January 2003 to current year.
GAGE.--Water-level recorder installed August 2014;
15-minute recording interval. Periodic manual measurements
checked by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level
measured, 81.39 ft above NGVD of 1929, Apr. 23, 2010; lowest
recorded 68.34 ft above NGVD of 1929, Oct. 24, 2017.