LOCATION.--Lat 40°45'30.7", long 73°18'09.1" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202, at south side of Burt Lane, 149 ft west of West Jefryn Boulevard, Deer Park.
WELL CHARACTERISTICS.--Depth 762 ft. Upper casing diameter 4 in; top of first opening 752 ft, bottom of last opening 757 ft.
DATUM.--Land-surface datum is 61.71 ft above North American Vertical Datum of 1988. Measuring point: Top of coupling, 0.33 ft below land-surface datum, 63.17 ft above land-surface datum, Feb. 1, 1984 to Sep. 24, 2024; Top of coupling, 0.33 ft below land-surface datum, 61.48 ft above land-surface datum, Sep. 24, 2024 to present.  
PERIOD OF RECORD.--June 1984 to current year.
GAGE.--Water-level recorder installed August 2014 to October 2024; 15-minute recording intervals. Periodic manual measurements made by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 45.08 ft above NAVD of 1988 (46.77 ft above NGVD of 1929), Nov. 16, 1990; lowest recorded, 35.26 ft above NAVD of 1988 (36.94 ft above NGVD of 1929), Aug. 30, 2016.

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