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Groundwater levels for the Nation

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USGS 404817073443901 N 9820. 1

Nassau County, New York
Latitude  40°48'16", Longitude  73°44'50" NAD27
Land-surface elevation 68.9 feet above NGVD29
The depth of the well is 318 feet below land surface.
This well is completed in the Northern Atlantic Coastal Plain aquifer system (S100NATLCP) national aquifer.
This well is completed in the Lloyd Aquifer (211LLYD) local aquifer.
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Date Time
?
 
Water-level
date-time
accuracy
?
 
Parameter
code
Water
level,
feet
below
land
surface
Water
level,
feet
above
specific
vertical
datum
Referenced
vertical
datum
?
 
Status
?
 
Method of
measurement
?
 
Measuring
agency
?
 
Source of
measurement
?
 
Water-level
approval
status
1982-01-0817:13 UTCm62610 9.07NGVD291OUSGSSA
1982-01-0817:13 UTCm62611 7.99NAVD881OUSGSSA
1982-01-0817:13 UTCm7201959.83  1OUSGSSA
1982-01-1510:10 UTCm62610 9.29NGVD291OUSGSSA
1982-01-1510:10 UTCm62611 8.21NAVD881OUSGSSA
1982-01-1510:10 UTCm7201959.61  1OUSGSSA
1983-01-0609:35 UTCm62610 7.58NGVD294OUSGSSA
1983-01-0609:35 UTCm62611 6.50NAVD884OUSGSSA
1983-01-0609:35 UTCm7201961.32  4OUSGSSA
1984-01-1010:17 UTCm62610 10.85NGVD294OUSGSSA
1984-01-1010:17 UTCm62611 9.77NAVD884OUSGSSA
1984-01-1010:17 UTCm7201958.05  4OUSGSSA
1985-01-1409:28 UTCm62610 12.82NGVD294OUSGSSA
1985-01-1409:28 UTCm62611 11.74NAVD884OUSGSSA
1985-01-1409:28 UTCm7201956.08  4OUSGSSA
1987-01-1314:55 UTCm62610 10.38NGVD294OUSGSSA
1987-01-1314:55 UTCm62611 9.30NAVD884OUSGSSA
1987-01-1314:55 UTCm7201958.52  4OUSGSSA
1988-02-1917:25 UTCm62610 11.46NGVD294OUSGSSA
1988-02-1917:25 UTCm62611 10.38NAVD884OUSGSSA
1988-02-1917:25 UTCm7201957.44  4OUSGSSA
1988-12-2718:05 UTCm62610 10.60NGVD294OUSGSSA
1988-12-2718:05 UTCm62611 9.52NAVD884OUSGSSA
1988-12-2718:05 UTCm7201958.30  4OUSGSSA
1990-03-2616:05 UTCm62610 13.20NGVD294OUSGSSA
1990-03-2616:05 UTCm62611 12.12NAVD884OUSGSSA
1990-03-2616:05 UTCm7201955.70  4OUSGSSA
1991-03-1918:25 UTCm62610 14.01NGVD294OUSGSSA
1991-03-1918:25 UTCm62611 12.93NAVD884OUSGSSA
1991-03-1918:25 UTCm7201954.89  4OUSGSSA
1991-11-0415:27 UTCm62610 12.28NGVD291OUSGSSA
1991-11-0415:27 UTCm62611 11.20NAVD881OUSGSSA
1991-11-0415:27 UTCm7201956.62  1OUSGSSA
1992-04-0115:10 UTCm62610 13.13NGVD294OUSGSSA
1992-04-0115:10 UTCm62611 12.05NAVD884OUSGSSA
1992-04-0115:10 UTCm7201955.77  4OUSGSSA
1992-05-1919:07 UTCm62610 11.19NGVD294OUSGSSA
1992-05-1919:07 UTCm62611 10.11NAVD884OUSGSSA
1992-05-1919:07 UTCm7201957.71  4OUSGSSA
1992-07-1415:35 UTCm62610 9.22NGVD294OUSGSSA
1992-07-1415:35 UTCm62611 8.14NAVD884OUSGSSA
1992-07-1415:35 UTCm7201959.68  4OUSGSSA
1992-08-2516:04 UTCm62610 9.11NGVD291OUSGSSA
1992-08-2516:04 UTCm62611 8.03NAVD881OUSGSSA
1992-08-2516:04 UTCm7201959.79  1OUSGSSA
1992-12-0816:57 UTCm62610 11.59NGVD291OUSGSSA
1992-12-0816:57 UTCm62611 10.51NAVD881OUSGSSA
1992-12-0816:57 UTCm7201957.31  1OUSGSSA
1993-03-2519:40 UTCm62610 12.68NGVD291OUSGSSA
1993-03-2519:40 UTCm62611 11.60NAVD881OUSGSSA
1993-03-2519:40 UTCm7201956.22  1OUSGSSA
1993-05-0213:58 UTCm62610 13.06NGVD291OUSGSSA
1993-05-0213:58 UTCm62611 11.98NAVD881OUSGSSA
1993-05-0213:58 UTCm7201955.84  1OUSGSSA
1993-06-1817:45 UTCm62610 10.27NGVD291OUSGSSA
1993-06-1817:45 UTCm62611 9.19NAVD881OUSGSSA
1993-06-1817:45 UTCm7201958.63  1OUSGSSA
1993-09-3019:01 UTCm62610 11.13NGVD291OUSGSSA
1993-09-3019:01 UTCm62611 10.05NAVD881OUSGSSA
1993-09-3019:01 UTCm7201957.77  1OUSGSSA
1993-12-2817:50 UTCm62610 11.82NGVD291OUSGSSA
1993-12-2817:50 UTCm62611 10.74NAVD881OUSGSSA
1993-12-2817:50 UTCm7201957.08  1OUSGSSA
1994-03-3016:17 UTCm62610 12.78NGVD291OUSGSSA
1994-03-3016:17 UTCm62611 11.70NAVD881OUSGSSA
1994-03-3016:17 UTCm7201956.12  1OUSGSSA
1994-06-0819:16 UTCm62610 11.29NGVD291OUSGSSA
1994-06-0819:16 UTCm62611 10.21NAVD881OUSGSSA
1994-06-0819:16 UTCm7201957.61  1OUSGSSA
1994-09-2015:03 UTCm62610 10.65NGVD291OUSGSSA
1994-09-2015:03 UTCm62611 9.57NAVD881OUSGSSA
1994-09-2015:03 UTCm7201958.25  1OUSGSSA
1994-12-1614:00 UTCm62610 12.46NGVD291OUSGSSA
1994-12-1614:00 UTCm62611 11.38NAVD881OUSGSSA
1994-12-1614:00 UTCm7201956.44  1OUSGSSA
1995-03-1519:22 UTCm62610 12.51NGVD291OUSGSSA
1995-03-1519:22 UTCm62611 11.43NAVD881OUSGSSA
1995-03-1519:22 UTCm7201956.39  1OUSGSSA
1995-06-1415:32 UTCm62610 11.62NGVD291OUSGSSA
1995-06-1415:32 UTCm62611 10.54NAVD881OUSGSSA
1995-06-1415:32 UTCm7201957.28  1OUSGSSA
1995-08-2414:10 UTCm62610 8.73NGVD291OUSGSSA
1995-08-2414:10 UTCm62611 7.65NAVD881OUSGSSA
1995-08-2414:10 UTCm7201960.17  1OUSGSSA
1995-12-0418:52 UTCm62610 11.02NGVD291OUSGSSA
1995-12-0418:52 UTCm62611 9.94NAVD881OUSGSSA
1995-12-0418:52 UTCm7201957.88  1OUSGSSA
1996-03-2215:30 UTCm62610 11.45NGVD291OUSGSSA
1996-03-2215:30 UTCm62611 10.37NAVD881OUSGSSA
1996-03-2215:30 UTCm7201957.45  1OUSGSSA
1996-05-1614:30 UTCm62610 12.26NGVD291OUSGSSA
1996-05-1614:30 UTCm62611 11.18NAVD881OUSGSSA
1996-05-1614:30 UTCm7201956.64  1OUSGSSA
1996-09-1017:57 UTCm62610 10.55NGVD291OUSGSSA
1996-09-1017:57 UTCm62611 9.47NAVD881OUSGSSA
1996-09-1017:57 UTCm7201958.35  1OUSGSSA
1997-03-1017:16 UTCm62610 12.94NGVD291OUSGSSA
1997-03-1017:16 UTCm62611 11.86NAVD881OUSGSSA
1997-03-1017:16 UTCm7201955.96  1OUSGSSA
2013-07-2917:22 UTCm62610 14.22NGVD291VUSGSSA
2013-07-2917:22 UTCm62611 13.14NAVD881VUSGSSA
2013-07-2917:22 UTCm7201954.68  1VUSGSSA

Explanation
SectionCodeDescription
Water-level date-time accuracymDate is accurate to the Minute
Parameter code62610Groundwater level above NGVD 1929, feet
Parameter code62611Groundwater level above NAVD 1988, feet
Parameter code72019Depth to water level, feet below land surface
Referenced vertical datumNAVD88North American Vertical Datum of 1988
Referenced vertical datumNGVD29National Geodetic Vertical Datum of 1929
Status1Static
Status4GWTideAffected
Method of measurementOObserved.
Method of measurementVCalibrated electric-tape measurement.
Measuring agencyUSGSU.S. Geological Survey
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.