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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
404327073341701 N 11396. 1
Northern Atlantic Coastal Plain aquifer system
Magothy Aquifer
Magothy Aquifer
LOCATION - Lat 40°43'27", long 73°34'17" referenced to North American Datum of 1927, Nassau County, NY, Hydrologic Unit 02030202, at southwest side of Eisenhower Couny Park, near wading pool, 87 ft north of fence line along Hempstead Turnpike, northernmost well, East Meadow.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 585 ft. Upper casing diameter 4 in; top of first opening 560 ft, bottom of last opening 580 ft. Datum of gage is NGVD of 1929.
DATUM - Land-surface datum is 83 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of coupling, 0.26 ft below land-surface datum, 82.74 ft above land-surface datum, Apr. 11, 1989 to Jun. 24, 2015; Top of 4 in. steel casing, 82.57 ft above land-surface datum, Jun. 23, 2015 to present.
PERIOD OF RECORD - May 1990 to March 1998, March 2002 to current year.
GAGE - Water-level recorder installed August 2002 to August 2024; 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 recorded, 57.33 ft above NGVD of 1929, Apr. 17, 2010; lowest recorded, 43.60 ft above NGVD of 1929, Aug. 28, 2002.
