LOCATION.--Lat 40°42'39", long 73°49'30" referenced to North American Datum of 1927, Queens County, NY, Hydrologic Unit 02030202, at eastern side of Maple Grove Cemetery, 300 ft south of maintenance building, southernmost well, Kew Gardens.
WELL CHARACTERISTICS.--Depth 510 ft. Upper casing diameter 4 in; top of first opening 480 ft, bottom of last opening 500 ft.
DATUM.--Land-surface datum is 82.9 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of northside of well casing, 82.87 ft above National Geodetic Vertical Datum of 1929, Jul. 5, 1996 to Mar. 27, 2024; Top of northside of well casing, 80.792 ft above North American Vertical Datum of 1988, Mar. 27, 2024 to present.
PERIOD OF RECORD.--July 1996 to April 2015, March 2024 to current year.
GAGE.--Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 18.63 ft above NGVD of 1929 (17.53 ft above NAVD of 1988), Apr. 20, 2010; lowest measured, 8.77 ft above NGVD of 1929 (7.67 ft above NAVD of 1988), Mar. 22, 1999.

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