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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
404530073181102 S 76016. 2
Northern Atlantic Coastal Plain aquifer system
Magothy Aquifer
Magothy Aquifer
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.
GROUNDWATER RECORDS
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.
