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Groundwater levels for the Nation

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  • 404900073442901
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USGS 404900073442901 N 12013. 1

Nassau County, New York
Latitude  40°49'00", Longitude  73°44'29" NAD27
Land-surface elevation 19 feet above NGVD29
The depth of the well is 356 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
1992-02-2019:05 UTCm62610 0.45NGVD291OUSGSSA
1992-02-2019:05 UTCm62611 -0.63NAVD881OUSGSSA
1992-02-2019:05 UTCm7201918.55  1OUSGSSA
1992-03-1614:10 UTCm62610 1.22NGVD291OUSGSSA
1992-03-1614:10 UTCm62611 0.14NAVD881OUSGSSA
1992-03-1614:10 UTCm7201917.78  1OUSGSSA
1992-05-1918:07 UTCm62610 3.79NGVD291OUSGSSA
1992-05-1918:07 UTCm62611 2.71NAVD881OUSGSSA
1992-05-1918:07 UTCm7201915.21  1OUSGSSA
1992-08-2514:24 UTCm62610 -5.08NGVD291OUSGSSA
1992-08-2514:24 UTCm62611 -6.16NAVD881OUSGSSA
1992-08-2514:24 UTCm7201924.08  1OUSGSSA
1992-12-0815:04 UTCm62610 -1.08NGVD291OUSGSSA
1992-12-0815:04 UTCm62611 -2.16NAVD881OUSGSSA
1992-12-0815:04 UTCm7201920.08  1OUSGSSA
1993-03-2517:52 UTCm62610 0.93NGVD291OUSGSSA
1993-03-2517:52 UTCm62611 -0.15NAVD881OUSGSSA
1993-03-2517:52 UTCm7201918.07  1OUSGSSA
1993-05-0212:02 UTCm62610 4.96NGVD291OUSGSSA
1993-05-0212:02 UTCm62611 3.88NAVD881OUSGSSA
1993-05-0212:02 UTCm7201914.04  1OUSGSSA
1993-06-1815:39 UTCm62610 -7.43NGVD291OUSGSSA
1993-06-1815:39 UTCm62611 -8.51NAVD881OUSGSSA
1993-06-1815:39 UTCm7201926.43  1OUSGSSA
1993-09-3016:59 UTCm62610 6.12NGVD291OUSGSSA
1993-09-3016:59 UTCm62611 5.04NAVD881OUSGSSA
1993-09-3016:59 UTCm7201912.88  1OUSGSSA
1993-12-2816:38 UTCm62610 0.96NGVD291OUSGSSA
1993-12-2816:38 UTCm62611 -0.12NAVD881OUSGSSA
1993-12-2816:38 UTCm7201918.04  1OUSGSSA
1994-03-3020:48 UTCm62610 -0.37NGVD291OUSGSSA
1994-03-3020:48 UTCm62611 -1.45NAVD881OUSGSSA
1994-03-3020:48 UTCm7201919.37  1OUSGSSA
1994-06-0819:15 UTCm62610 -5.53NGVD291OUSGSSA
1994-06-0819:15 UTCm62611 -6.61NAVD881OUSGSSA
1994-06-0819:15 UTCm7201924.53  1OUSGSSA
1994-09-2015:46 UTCm62610 -7.53NGVD291OUSGSSA
1994-09-2015:46 UTCm62611 -8.61NAVD881OUSGSSA
1994-09-2015:46 UTCm7201926.53  1OUSGSSA
1994-12-1614:48 UTCm62610 7.54NGVD291OUSGSSA
1994-12-1614:48 UTCm62611 6.46NAVD881OUSGSSA
1994-12-1614:48 UTCm7201911.46  1OUSGSSA
1995-03-1520:05 UTCm62610 8.64NGVD291OUSGSSA
1995-03-1520:05 UTCm62611 7.56NAVD881OUSGSSA
1995-03-1520:05 UTCm7201910.36  1OUSGSSA
1995-06-1416:23 UTCm62610 0.40NGVD291OUSGSSA
1995-06-1416:23 UTCm62611 -0.68NAVD881OUSGSSA
1995-06-1416:23 UTCm7201918.60  1OUSGSSA
1995-08-2414:36 UTCm62610 -7.56NGVD291OUSGSSA
1995-08-2414:36 UTCm62611 -8.64NAVD881OUSGSSA
1995-08-2414:36 UTCm7201926.56  1OUSGSSA
1995-12-0419:59 UTCm62610 5.96NGVD291OUSGSSA
1995-12-0419:59 UTCm62611 4.88NAVD881OUSGSSA
1995-12-0419:59 UTCm7201913.04  1OUSGSSA
1996-03-2216:49 UTCm62610 6.00NGVD291OUSGSSA
1996-03-2216:49 UTCm62611 4.92NAVD881OUSGSSA
1996-03-2216:49 UTCm7201913.00  1OUSGSSA
1996-05-1618:23 UTCm62610 -4.19NGVD291OUSGSSA
1996-05-1618:23 UTCm62611 -5.27NAVD881OUSGSSA
1996-05-1618:23 UTCm7201923.19  1OUSGSSA
1996-09-1019:04 UTCm62610 -7.00NGVD291OUSGSSA
1996-09-1019:04 UTCm62611 -8.08NAVD881OUSGSSA
1996-09-1019:04 UTCm7201926.00  1OUSGSSA
1997-03-1018:13 UTCm62610 3.84NGVD291OUSGSSA
1997-03-1018:13 UTCm62611 2.76NAVD881OUSGSSA
1997-03-1018:13 UTCm7201915.16  1OUSGSSA
2010-04-2718:45 UTCm62610 14.20NGVD291S  A
2010-04-2718:45 UTCm62611 13.12NAVD881S  A
2010-04-2718:45 UTCm720194.80  1S  A
2013-05-2817:16 UTCm62610 8.47NGVD291S  A
2013-05-2817:16 UTCm62611 7.39NAVD881S  A
2013-05-2817:16 UTCm7201910.53  1S  A
2013-07-2921:00 UTCm62610 1.13NGVD294SUSGSSA
2013-07-2921:00 UTCm62611 0.05NAVD884SUSGSSA
2013-07-2921:00 UTCm7201917.87  4SUSGSSA
2015-04-1616:04 UTCm62610 12.16NGVD294SUSGSSA
2015-04-1616:04 UTCm62611 11.08NAVD884SUSGSSA
2015-04-1616:04 UTCm720196.84  4SUSGSSA
2016-04-1815:49 UTCm62610 7.89NGVD291S  A
2016-04-1815:49 UTCm62611 6.81NAVD881S  A
2016-04-1815:49 UTCm7201911.11  1S  A
2017-04-1715:58 UTCm62610 11.33NGVD291VUSGSSA
2017-04-1715:58 UTCm62611 10.25NAVD881VUSGSSA
2017-04-1715:58 UTCm720197.67  1VUSGSSA
2018-04-1814:59 UTCm62610 13.48NGVD291TUSGSSA
2018-04-1814:59 UTCm62611 12.40NAVD881TUSGSSA
2018-04-1814:59 UTCm720195.52  1TUSGSSA
2019-04-2214:35 UTCm62610 14.15NGVD291VUSGSSA
2019-04-2214:35 UTCm62611 13.07NAVD881VUSGSSA
2019-04-2214:35 UTCm720194.85  1VUSGSSA
2021-04-2815:00 UTCm62610 13.70NGVD291VUSGSSA
2021-04-2815:00 UTCm62611 12.62NAVD881VUSGSSA
2021-04-2815:00 UTCm720195.30  1VUSGSSA
2022-05-1616:44 UTCm62610 14.47NGVD291VUSGSSA
2022-05-1616:44 UTCm62611 13.39NAVD881VUSGSSA
2022-05-1616:44 UTCm720194.53  1VUSGSSA
2023-05-1114:18 UTCm62610 13.91NGVD291VUSGSSA
2023-05-1114:18 UTCm62611 12.83NAVD881VUSGSSA
2023-05-1114:18 UTCm720195.09  1VUSGSSA
2024-05-1019:14 UTCm62610 13.57NGVD291VUSGSSA
2024-05-1019:14 UTCm62611 12.49NAVD881VUSGSSA
2024-05-1019:14 UTCm720195.43  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 measurementSSteel-tape measurement.
Method of measurementTElectric-tape measurement.
Method of measurementVCalibrated electric-tape measurement.
Measuring agencyNot determined
Measuring agencyUSGSU.S. Geological Survey
Source of measurementNot determined
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.