LOCATION.--Lat 40°47'27", long 73°57'51" referenced to North American Datum of 1927, New York County, NY, Hydrologic Unit 02030101, at Central Park, at southwest corner of Central Park West Drive and entrance drive from West 96th Street, Manhattan.
WELL CHARACTERISTICS.--Depth 32.3 ft. Upper casing diameter 3 in; top of first opening 3 ft, bottom of last opening 32.3 ft. Cased to 3 ft, open hole.
DATUM.--Land-surface datum is 99.5 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 0.65 ft below land-surface datum, 98.85 ft above land-surface datum, Jun. 23, 2005 to present.
PERIOD OF RECORD.--October 2005 to April 2013, July 2024 to current year.
GAGE.--Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 96.62 ft above NGVD of 1929, Sept. 8, 2011; lowest measured, 86.35 ft above NGVD of 1929, Sept. 26, 2012.

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