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.
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.