PROVISIONAL DATA SUBJECT TO REVISION
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LOCATION.--Lat 40°33'25.8", long
74°09'17.9" referenced to North American Datum of
1983, Richmond County, NY, Hydrologic Unit 02030104, at
northeast corner of Everton Avenue and Leverett Avenue,
northernmost well, Great Kills, Staten Island.
WELL CHARACTERISTICS.--Depth 66 ft. Upper casing diameter 4 in; top of first opening 61 ft, bottom of last opening 66 ft.
DATUM.--Land-surface datum is 44 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 0.20 ft below land-surface datum, 43.8 ft above land-surface datum, Feb. 3, 2005 to Sep. 17, 2024; Top of casing, 0.20 ft below land-surface datum, 42.28 ft above land-surface datum, Sep. 17, 2024 to present.
PERIOD OF RECORD.--February 2005 to current year.
GAGE.--Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 15.01 ft above NGVD of 1929, Dec. 30, 2011; lowest measured, 13.38 ft above NGVD of 1929, Feb. 22, 2011.
WELL CHARACTERISTICS.--Depth 66 ft. Upper casing diameter 4 in; top of first opening 61 ft, bottom of last opening 66 ft.
DATUM.--Land-surface datum is 44 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 0.20 ft below land-surface datum, 43.8 ft above land-surface datum, Feb. 3, 2005 to Sep. 17, 2024; Top of casing, 0.20 ft below land-surface datum, 42.28 ft above land-surface datum, Sep. 17, 2024 to present.
PERIOD OF RECORD.--February 2005 to current year.
GAGE.--Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 15.01 ft above NGVD of 1929, Dec. 30, 2011; lowest measured, 13.38 ft above NGVD of 1929, Feb. 22, 2011.
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