LOCATION.--Lat 40°48'34", long
73°40'37" referenced to North American Datum of 1927,
Nassau County, NY, Hydrologic Unit 02030201, southwest side of
Bonnie Heights Road, in Flower Hill Village Hall parking lot,
Flower Hill.
WELL CHARACTERISTICS.--Depth 615 ft. Upper casing
diameter 4 in; top of first opening 585 ft, bottom of last
opening 605 ft.
DATUM.--Land-surface datum is 118 ft above National
Geodetic Vertical Datum of 1929. Measuring point: Top of
casing, 0.84 ft below land-surface datum, 117.16 ft above
National Geodetic Vertical Datum of 1929, Jul. 12, 1995 to Mar.
13, 2024; Top of 4" coupling, 117.525 ft above National
Geodetic Vertical Datum of 1929, Mar. 13, 2024 to present.
PERIOD OF RECORD.--September 1994 to March 1998, January
2002 to current year.
GAGE.--Water-level recorder installed June 2016;
15-minute recording interval. Periodic manual measurements made
by USGS personnel.
REMARKS.--Water level affected by nearby pumping.
Cellular water-level telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Highest water level
recorded, 27.39 ft above NGVD of 1929, Apr. 24, 2024; lowest
measured, 4.19 ft above NGVD of 1929, Aug. 23, 1995.
Daily data pages will be decommissioned in early 2026.
Daily data are now available in WDFN.
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