LOCATION.--Lat 40°49'32", long
73°05'59" referenced to North American Datum of 1927,
Suffolk County, NY, Hydrologic Unit 02030202, at Duncan Avenue
and Portion Road, in pumping center, in west recorder shelter,
Lake Ronkonkoma.
WELL CHARACTERISTICS.--Depth 1,305 ft. Upper casing
diameter 4 in; top of first opening 1,290 ft, bottom of last
opening 1,300 ft. Datum of gage is NGVD of 1929.
PERIOD OF RECORD.--October 1968 to current year.
Unpublished records for October 1968 to September 1975 are
available in files of the U.S. Geological Survey.
GAGE.--Water-level recorder installed August 1986;
15-minute recording interval. Periodic manual measurements made
by USGS personnel.
REMARKS.--Water level affected by nearby pumping.
Cellular water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Highest water level
measured, 40.92 ft above NGVD 29, June 5, 1979; lowest
recorded, 32.33 ft above NGVD 29, October 3, 2017.
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