PROVISIONAL DATA SUBJECT TO REVISION
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LOCATION.--Lat 40°30'46.8", long
74°12'58.1" referenced to North American Datum of
1983, Richmond County, NY, Hydrologic Unit 02030104, at Mission
of the Immaculate Virgin, northwest corner of upper parking
lot, across from Omega II building, westernmost well, Mount
Loretto, Staten Island.
WELL CHARACTERISTICS.--Depth 79.5 ft. Upper casing diameter 2 in; top of first opening 69.5 ft, bottom of last opening 74.5 ft.
DATUM.--Land-surface datum is 51 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 0.15 ft below land-surface datum, 50.85 ft above land-surface datum, Jul. 23, 2004 to Sep. 16, 2024; Top of casing, 0.15 ft below land-surface datum, 49.84 ft above land-surface datum, Sep. 16, 2024 to present.
PERIOD OF RECORD.--July 2004 to current year.
GAGE.--Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 6.49 ft above NGVD of 1929, Mar. 24, 2010; lowest measured, 4.40 ft above NGVD of 1929, Jan. 4, 2008.
WELL CHARACTERISTICS.--Depth 79.5 ft. Upper casing diameter 2 in; top of first opening 69.5 ft, bottom of last opening 74.5 ft.
DATUM.--Land-surface datum is 51 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 0.15 ft below land-surface datum, 50.85 ft above land-surface datum, Jul. 23, 2004 to Sep. 16, 2024; Top of casing, 0.15 ft below land-surface datum, 49.84 ft above land-surface datum, Sep. 16, 2024 to present.
PERIOD OF RECORD.--July 2004 to current year.
GAGE.--Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD.--Highest water level measured, 6.49 ft above NGVD of 1929, Mar. 24, 2010; lowest measured, 4.40 ft above NGVD of 1929, Jan. 4, 2008.
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