LOCATION.--Lat 40°35'13.2", long
74°05'56.8" referenced to North American Datum of
1983, Richmond County, NY, Hydrologic Unit 02030104, at
southeast corner of McArthur Park, dead end of Dongan Hills
Avenue, southwest of North Railroad Avenue, Dongan Hills,
Staten Island.
WELL CHARACTERISTICS.--Depth 31 ft. Upper casing
diameter 2 in; top of first opening 21 ft, bottom of last
opening 26 ft.
DATUM.--Land-surface datum is 27 ft above National
Geodetic Vertical Datum of 1929. Measuring point: Top of
casing, 0.76 ft below land-surface datum, 26.24 ft above
land-surface datum, Jul. 23, 2004 to Sep. 17, 2024; Top of
casing, 0.76 ft below land-surface datum, 23.44 ft above
land-surface datum, Sep. 17, 2024 to present.
PERIOD OF RECORD.--July 2004 to April 2015, June 2024 to
current year.
GAGE.--Periodic manual measurements by USGS
personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level
measured, 15.11 ft above NGVD of 1929, Mar. 24, 2010; lowest
measured, 12.94 ft above NGVD of 1929, Sept. 27, 2010.