Funding for this site is provided by:
40°52'22.2", long 72°52'32.6" referenced to North
American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202,
at Brookhaven National Laboratory, northeast corner of Thomson Road and
Forth Avenue, Upton.
Depth 1,395 ft. Upper casing diameter 10
in; top of first opening 1,312 ft, bottom of last opening 1,392
PERIOD OF RECORD.--
August 1949 to current year.
Water-level recorder installed September 4, 2015;
15-minute recording interval. Periodic manual measurements by USGS
Cellular water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--
Highest water level measured,
36.11 ft above sea level, July 12, 1979; lowest measured, 28.4 ft above
sea level, October 3, 2017.