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Groundwater levels for the Nation

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  • 404944073392601
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USGS 404944073392601 N 12506. 1

Nassau County, New York
Latitude  40°49'44.9", Longitude  73°39'31.4" NAD83
Land-surface elevation 34 feet above NGVD29
The depth of the well is 506 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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Reselect period
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
1994-12-1516:36 UTCm62610 14.49NGVD294OUSGSSA
1994-12-1516:36 UTCm62611 13.40NAVD884OUSGSSA
1994-12-1516:36 UTCm7201919.51  4OUSGSSA
1995-03-1617:03 UTCm62610 15.25NGVD294OUSGSSA
1995-03-1617:03 UTCm62611 14.16NAVD884OUSGSSA
1995-03-1617:03 UTCm7201918.75  4OUSGSSA
1995-06-1317:45 UTCm62610 13.12NGVD294OUSGSSA
1995-06-1317:45 UTCm62611 12.03NAVD884OUSGSSA
1995-06-1317:45 UTCm7201920.88  4OUSGSSA
1995-08-2315:49 UTCm62610 10.45NGVD294OUSGSSA
1995-08-2315:49 UTCm62611 9.36NAVD884OUSGSSA
1995-08-2315:49 UTCm7201923.55  4OUSGSSA
1995-12-0515:48 UTCm62610 14.07NGVD294OUSGSSA
1995-12-0515:48 UTCm62611 12.98NAVD884OUSGSSA
1995-12-0515:48 UTCm7201919.93  4OUSGSSA
1996-03-1916:56 UTCm62610 14.22NGVD294OUSGSSA
1996-03-1916:56 UTCm62611 13.13NAVD884OUSGSSA
1996-03-1916:56 UTCm7201919.78  4OUSGSSA
1996-05-1515:30 UTCm62610 13.93NGVD294OUSGSSA
1996-05-1515:30 UTCm62611 12.84NAVD884OUSGSSA
1996-05-1515:30 UTCm7201920.07  4OUSGSSA
1996-09-1116:07 UTCm62610 11.06NGVD294OUSGSSA
1996-09-1116:07 UTCm62611 9.97NAVD884OUSGSSA
1996-09-1116:07 UTCm7201922.94  4OUSGSSA
1996-12-1116:19 UTCm62610 14.78NGVD294OUSGSSA
1996-12-1116:19 UTCm62611 13.69NAVD884OUSGSSA
1996-12-1116:19 UTCm7201919.22  4OUSGSSA
1997-03-1017:17 UTCm62610 15.37NGVD294OUSGSSA
1997-03-1017:17 UTCm62611 14.28NAVD884OUSGSSA
1997-03-1017:17 UTCm7201918.63  4OUSGSSA
1997-05-2218:22 UTCm62610 14.21NGVD291OUSGSSA
1997-05-2218:22 UTCm62611 13.12NAVD881OUSGSSA
1997-05-2218:22 UTCm7201919.79  1OUSGSSA
1997-07-2218:51 UTCm62610 11.96NGVD294OUSGSSA
1997-07-2218:51 UTCm62611 10.87NAVD884OUSGSSA
1997-07-2218:51 UTCm7201922.04  4OUSGSSA
1997-08-2018:07 UTCm62610 13.80NGVD294OUSGSSA
1997-08-2018:07 UTCm62611 12.71NAVD884OUSGSSA
1997-08-2018:07 UTCm7201920.20  4OUSGSSA
1997-09-1616:36 UTCm62610 14.54NGVD294OUSGSSA
1997-09-1616:36 UTCm62611 13.45NAVD884OUSGSSA
1997-09-1616:36 UTCm7201919.46  4OUSGSSA
1998-03-2616:23 UTCm62610 16.58NGVD294SUSGSSA
1998-03-2616:23 UTCm62611 15.49NAVD884SUSGSSA
1998-03-2616:23 UTCm7201917.42  4SUSGSSA
2006-03-2815:43 UTCm62610 17.28NGVD291SUSGSSA
2006-03-2815:43 UTCm62611 16.19NAVD881SUSGSSA
2006-03-2815:43 UTCm7201916.72  1SUSGSSA
2008-04-2218:23 UTCm62610 16.29NGVD29PS  A
2008-04-2218:23 UTCm62611 15.20NAVD88PS  A
2008-04-2218:23 UTCm7201917.71  PS  A
2008-10-2913:51 UTCm62610 14.45NGVD291S  A
2008-10-2913:51 UTCm62611 13.36NAVD881S  A
2008-10-2913:51 UTCm7201919.55  1S  A
2008-12-0115:47 UTCm62610 16.62NGVD291S  A
2008-12-0115:47 UTCm62611 15.53NAVD881S  A
2008-12-0115:47 UTCm7201917.38  1S  A
2010-04-2716:40 UTCm62610 17.49NGVD291SUSGSSA
2010-04-2716:40 UTCm62611 16.40NAVD881SUSGSSA
2010-04-2716:40 UTCm7201916.51  1SUSGSSA
2011-04-2916:53 UTCm62610 17.05NGVD294SUSGSSA
2011-04-2916:53 UTCm62611 15.96NAVD884SUSGSSA
2011-04-2916:53 UTCm7201916.95  4SUSGSSA
2012-04-2720:45 UTCm62610 17.23NGVD294SUSGSSA
2012-04-2720:45 UTCm62611 16.14NAVD884SUSGSSA
2012-04-2720:45 UTCm7201916.77  4SUSGSSA
2013-04-2316:09 UTCm62610 18.17NGVD294SUSGSSA
2013-04-2316:09 UTCm62611 17.08NAVD884SUSGSSA
2013-04-2316:09 UTCm7201915.83  4SUSGSSA
2013-07-2921:15 UTCm62610 13.68NGVD294SUSGSSA
2013-07-2921:15 UTCm62611 12.59NAVD884SUSGSSA
2013-07-2921:15 UTCm7201920.32  4SUSGSSA
2014-04-1718:28 UTCm62610 16.23NGVD294SUSGSSA
2014-04-1718:28 UTCm62611 15.14NAVD884SUSGSSA
2014-04-1718:28 UTCm7201917.77  4SUSGSSA
2015-04-1715:40 UTCm62610 17.91NGVD294TUSGSSA
2015-04-1715:40 UTCm62611 16.82NAVD884TUSGSSA
2015-04-1715:40 UTCm7201916.09  4TUSGSSA
2016-04-1816:45 UTCm62610 16.53NGVD291SUSGSSA
2016-04-1816:45 UTCm62611 15.44NAVD881SUSGSSA
2016-04-1816:45 UTCm7201917.47  1SUSGSSA
2017-04-2417:14 UTCm62610 16.75NGVD291SUSGSSA
2017-04-2417:14 UTCm62611 15.66NAVD881SUSGSSA
2017-04-2417:14 UTCm7201917.25  1SUSGSSA
2019-04-1816:35 UTCm62610 19.86NGVD291VUSGSSA
2019-04-1816:35 UTCm62611 18.77NAVD881VUSGSSA
2019-04-1816:35 UTCm7201914.14  1VUSGSSA
2020-11-0418:10 UTCm62610 16.52NGVD291VUSGSSA
2020-11-0418:10 UTCm62611 15.43NAVD881VUSGSSA
2020-11-0418:10 UTCm7201917.48  1VUSGSSA
2021-04-2715:36 UTCm62610 15.93NGVD291VUSGSSA
2021-04-2715:36 UTCm62611 14.84NAVD881VUSGSSA
2021-04-2715:36 UTCm7201918.07  1VUSGSSA
2022-05-1616:42 UTCm62610 16.35NGVD294VUSGSSA
2022-05-1616:42 UTCm62611 15.26NAVD884VUSGSSA
2022-05-1616:42 UTCm7201917.65  4VUSGSSA
2023-04-1713:22 UTCm62610 15.91NGVD294VUSGSSA
2023-04-1713:22 UTCm62611 14.82NAVD884VUSGSSA
2023-04-1713:22 UTCm7201918.09  4VUSGSSA
2024-05-0312:16 UTCm62610 17.04NGVD294VUSGSSA
2024-05-0312:16 UTCm62611 15.95NAVD884VUSGSSA
2024-05-0312:16 UTCm7201916.96  4VUSGSSA

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
StatusPWater level was affected by pumping at the time of the measurement
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.