LOCATION.--Lat 40°35'20", long 73°57'57" referenced to North American Datum of 1927, Kings County, NY, Hydrologic Unit 02030202, at west side of northbound Ocean Parkway service road, 54 ft north of Avenue Y, Gravesend.
WELL CHARACTERISTICS.--Depth 405 ft. Upper casing diameter 4 in; top of first opening 385 ft, bottom of last opening 405 ft.
DATUM.--Land-surface datum is 8.50 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 0.03 ft below land-surface datum, 8.47 ft above land-surface datum, Mar. 14, 1995 to Aug. 21, 2013; unknown, 7.28 ft above land-surface datum, Aug. 21, 2013 to present.
PERIOD OF RECORD.--March 1995 to April 2015, July 2024 to current year.
GAGE.--Periodic manual measurements by USGS personnel.
REMARKS.--Water level affected by tidal fluctuation and local dewatering.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 3.75 ft above NGVD of 1929, Sept. 29, 2004; lowest measured, 0.72 ft above NGVD of 1929, Feb. 19, 2010.

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