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USGS Water-Year Summary 2024
404818073293101 N 11454. 1
Northern Atlantic Coastal Plain aquifer system
Magothy Aquifer
Magothy Aquifer
LOCATION - Lat 40°48'18", long 73°29'31" referenced to North American Datum of 1927, Nassau County, NY, Hydrologic Unit 02030202, at west side of Park Drive East, just south of Debra Place, in recharge basin #427, Locust Grove.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 595 ft. Upper casing diameter 4 in; top of first opening 570 ft, bottom of last opening 590 ft.
DATUM - Land-surface datum is 207.5 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of 4 inch steel casing, north edge, 207.54 ft above land-surface datum, Jul. 20, 1990 to Oct. 6, 2023; Top of 4 inch steel casing, north edge, 207.5 ft above land-surface datum, Oct. 6, 2023 to present.
PERIOD OF RECORD - March 1991 to current year.
GAGE - Water-level recorder installed August 2002; 15-minute recording interval. Periodic manual measurements made by USGS personnel.
REMARKS - Cellular water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 82.51 ft above NGVD of 1929, Mar. 20, 1991; lowest recorded, 69.56 ft above NGVD of 1929, Oct. 8, 2002.
