PROVISIONAL DATA SUBJECT TO REVISION
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Site Information
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 recorder shelter, Lake
Ronkonkoma.
WELL CHARACTERISTICS.--Depth 855 ft. Upper casing diameter 4 in; top of first opening 840 ft, bottom of last opening 850 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 Unpublished records for October 1968 to September 1975 are available in files of the U.S. Geological Survey.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 recorded, 54.81 ft above NGVD 29, May 14 and 15, 2010; lowest recorded, 43.06 ft above NGVD 29, August 28, 2017.
WELL CHARACTERISTICS.--Depth 855 ft. Upper casing diameter 4 in; top of first opening 840 ft, bottom of last opening 850 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 Unpublished records for October 1968 to September 1975 are available in files of the U.S. Geological Survey.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 recorded, 54.81 ft above NGVD 29, May 14 and 15, 2010; lowest recorded, 43.06 ft above NGVD 29, August 28, 2017.
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