This station is operated in cooperation
Nassau-Suffolk Water Commissioners
Lat 40°44'18", long 73°43'41"
referenced to North American Datum of 1927, Queens County, NY,
Hydrologic Unit 02030202, at Creedmoor State Hospital, near the
intersection of Hillside Avenue and Winchester Blvd in recorder
Depth 640 ft. Upper casing diameter 12
in; top of first opening 600 ft, bottom of last opening 640 ft.
Land-surface datum is 113.5 ft above National Geodetic
Vertical Datum of 1929. Measuring point: Top of casing, 0.22 ft above
land-surface datum, distance above land-surface datum not defined,
UNDEFINED BEGIN DATE to present.
PERIOD OF RECORD.--
February 1946 to current year. Unpublished
records for February 1946 to September 1975 are available in files of
the U.S. Geological Survey.
Digital water-level recorder; 60-minute recording
interval. Periodic measurements made with chalked steel tape by U.S.
Geological Survey personnel.
Water level affected by nearby pumping.
EXTREMES FOR PERIOD OF RECORD.--
Highest water level recorded,
14.34 ft above sea level, January 14, 1992; lowest recorded, 18.66 ft
below sea level, July 30, 1954.