LOCATION.--Lat 40°49'43", long
73°41'47" referenced to North American Datum of 1927,
Nassau County, NY, Hydrologic Unit 02030201, at north side of
Charles Street near dead end, along west side of foot path to
Madison Street, at Stannards Brook Park, Port Washington.
WELL CHARACTERISTICS.--Depth 400 ft. Upper casing
diameter 4 in; top of first opening 355 ft, bottom of last
opening 375 ft. Datum of gage is NGVD of 1929.
PERIOD OF RECORD.--March 1995 to current year.
GAGE.--Water-level recorder installed June 14, 2002;
15-minute recording interval. Periodic manual measurements made
by USGS personnel.
REMARKS.--Water level affected by tidal fluctuation and
EXTREMES FOR PERIOD OF RECORD.--Highest water level
recorded, 12.37 ft above NGVD 29, April 1, 2013; lowest
recorded, 14.18 ft below above NGVD 29, July 10, 2002.