PROVISIONAL DATA SUBJECT TO REVISION
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Site Information
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.
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.
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.
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