USGS Water-Year Summary 2023
404326073341801 N 11570. 1
Northern Atlantic Coastal Plain aquifer system
Lloyd Aquifer
LOCATION - Lat 40°43'26", long 73°34'18" referenced to North American Datum of 1927, Nassau County, NY, Hydrologic Unit 02030202, at southwest side of Eisenhower Couny Park, near wading pool, 80 ft north of fence line along Hempstead Turnpike, westernmost well, East Meadow.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 875 ft. Upper casing diameter 4 in; top of first opening 850 ft, bottom of last opening 870 ft. Datum of gage is NGVD of 1929.
PERIOD OF RECORD - May 1990 to March 1998, March 2002 to March 2011, and October 2012 to current year.
GAGE - Water-level recorder installed August 2002; 15-minute recording interval. Periodic manual measurements made by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 20.90 ft above NGVD 29, April 16, 2007; lowest recorded, 10.55 ft above NGVD 29, August 23, 2002.