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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
403040074144801 R 131. 1
Northern Atlantic Coastal Plain aquifer system
Harbor Hill Terminal Moraine
Harbor Hill Terminal Moraine
LOCATION - Lat 40°30'40.1", long 74°14'48.7" referenced to North American Datum of 1983, Richmond County, NY, Hydrologic Unit 02030104, at southwest corner of Johnson Avenue and Craig Avenue, southernmost well, Tottenville, Staten Island.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 69 ft. Upper casing diameter 2 in; top of first opening 59 ft, bottom of last opening 64 ft.
DATUM - Land-surface datum is 59 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 0.18 ft below land-surface datum, 58.82 ft above land-surface datum, Jul. 23, 2004 to Sep. 16, 2024; Top of casing, 0.18 ft below land-surface datum, 57.8 ft above land-surface datum, Sep. 16, 2024 to present.
PERIOD OF RECORD - July 2004 to current year.
GAGE - Water level recorder installed November 2005 to June 2007. Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 8.35 ft above NGVD of 1929, Feb. 19, 2010; lowest measured, 3.86 ft above NGVD of 1929, Jan. 20, 2011.
