PROVISIONAL DATA SUBJECT TO REVISION
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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.
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.
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