LOCATION.--Lat 40°38'27.5", long
74°06'01.6" referenced to North American Datum of
1983, Richmond County, NY, Hydrologic Unit 02030104, at Snug
Harbor Cultural Center, southern end of southeast parking lot
near Fillmore Street entrance, Livingston, Staten Island.
WELL CHARACTERISTICS.--Depth 70 ft. Upper casing
diameter 2 in; top of first opening 30 ft, bottom of last
opening 40 ft.
DATUM.--Land-surface datum is 57 ft above National
Geodetic Vertical Datum of 1929. Measuring point: Top of
casing, 0.23 ft below land-surface datum, 56.77 ft above
land-surface datum, Jul. 23, 2004 to present.
PERIOD OF RECORD.--July 2004 to April 2015, June 2024 to
current year.
GAGE.--Water level recorder installed November 2005 to
September 2013. Periodic manual measurements by USGS
personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level
recorded, 35.43 ft above NGVD of 1929, Sept. 29, 2011; lowest
recorded, 21.53 ft above NGVD of 1929, Feb. 15, 2011.