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Groundwater levels for the Nation

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  • 404944073406001
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USGS 404944073406001 N 12320. 1

Nassau County, New York
Latitude  40°49'44.7", Longitude  73°40'58.6" NAD83
Land-surface elevation 138 feet above NAVD88
The depth of the well is 535 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.
Output formats
Table of data
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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
1993-10-0518:15 UTCm62610 16.69NGVD291OUSGSSA
1993-10-0518:15 UTCm62611 15.60NAVD881OUSGSSA
1993-10-0518:15 UTCm72019122.40  1OUSGSSA
1993-12-2916:05 UTCm62610 16.98NGVD294OUSGSSA
1993-12-2916:05 UTCm62611 15.89NAVD884OUSGSSA
1993-12-2916:05 UTCm72019122.11  4OUSGSSA
1994-03-3120:15 UTCm62610 17.64NGVD294OUSGSSA
1994-03-3120:15 UTCm62611 16.55NAVD884OUSGSSA
1994-03-3120:15 UTCm72019121.45  4OUSGSSA
1994-06-0715:55 UTCm62610 15.04NGVD294OUSGSSA
1994-06-0715:55 UTCm62611 13.95NAVD884OUSGSSA
1994-06-0715:55 UTCm72019124.05  4OUSGSSA
1994-09-1916:34 UTCm62610 14.37NGVD294OUSGSSA
1994-09-1916:34 UTCm62611 13.28NAVD884OUSGSSA
1994-09-1916:34 UTCm72019124.72  4OUSGSSA
1994-12-1516:08 UTCm62610 16.31NGVD294OUSGSSA
1994-12-1516:08 UTCm62611 15.22NAVD884OUSGSSA
1994-12-1516:08 UTCm72019122.78  4OUSGSSA
1995-03-1616:41 UTCm62610 17.17NGVD294OUSGSSA
1995-03-1616:41 UTCm62611 16.08NAVD884OUSGSSA
1995-03-1616:41 UTCm72019121.92  4OUSGSSA
1995-06-1317:18 UTCm62610 14.67NGVD294OUSGSSA
1995-06-1317:18 UTCm62611 13.58NAVD884OUSGSSA
1995-06-1317:18 UTCm72019124.42  4OUSGSSA
1995-08-2316:08 UTCm62610 11.78NGVD294OUSGSSA
1995-08-2316:08 UTCm62611 10.69NAVD884OUSGSSA
1995-08-2316:08 UTCm72019127.31  4OUSGSSA
1995-12-0516:08 UTCm62610 16.09NGVD294OUSGSSA
1995-12-0516:08 UTCm62611 15.00NAVD884OUSGSSA
1995-12-0516:08 UTCm72019123.00  4OUSGSSA
1996-03-1917:15 UTCm62610 16.14NGVD294OUSGSSA
1996-03-1917:15 UTCm62611 15.05NAVD884OUSGSSA
1996-03-1917:15 UTCm72019122.95  4OUSGSSA
1996-05-1515:52 UTCm62610 16.03NGVD294OUSGSSA
1996-05-1515:52 UTCm62611 14.94NAVD884OUSGSSA
1996-05-1515:52 UTCm72019123.06  4OUSGSSA
1996-09-1116:30 UTCm62610 11.84NGVD294OUSGSSA
1996-09-1116:30 UTCm62611 10.75NAVD884OUSGSSA
1996-09-1116:30 UTCm72019127.25  4OUSGSSA
1996-12-1116:35 UTCm62610 16.94NGVD294OUSGSSA
1996-12-1116:35 UTCm62611 15.85NAVD884OUSGSSA
1996-12-1116:35 UTCm72019122.15  4OUSGSSA
1997-03-1016:50 UTCm62610 17.99NGVD291OUSGSSA
1997-03-1016:50 UTCm62611 16.90NAVD881OUSGSSA
1997-03-1016:50 UTCm72019121.10  1OUSGSSA
2004-03-2315:40 UTCm62610 16.72NGVD291SUSGSSA
2004-03-2315:40 UTCm62611 15.63NAVD881SUSGSSA
2004-03-2315:40 UTCm72019122.37  1SUSGSSA
2005-03-2414:27 UTCm62610 18.24NGVD291SUSGSSA
2005-03-2414:27 UTCm62611 17.15NAVD881SUSGSSA
2005-03-2414:27 UTCm72019120.85  1SUSGSSA
2006-03-2818:20 UTCm62610 20.28NGVD291SUSGSSA
2006-03-2818:20 UTCm62611 19.19NAVD881SUSGSSA
2006-03-2818:20 UTCm72019118.81  1SUSGSSA
2010-04-2019:05 UTCm62610 20.88NGVD291T  A
2010-04-2019:05 UTCm62611 19.79NAVD881T  A
2010-04-2019:05 UTCm72019118.21  1T  A
2013-07-2416:39 UTCm62610 16.35NGVD291TUSGSSA
2013-07-2416:39 UTCm62611 15.26NAVD881TUSGSSA
2013-07-2416:39 UTCm72019122.74  1TUSGSSA
2013-07-2917:10 UTCm62610 16.67NGVD291TUSGSSA
2013-07-2917:10 UTCm62611 15.58NAVD881TUSGSSA
2013-07-2917:10 UTCm72019122.42  1TUSGSSA
2021-05-2518:05 UTCm62610 17.59NGVD291VUSGSSA
2021-05-2518:05 UTCm62611 16.50NAVD881VUSGSSA
2021-05-2518:05 UTCm72019121.50  1VUSGSSA
2022-05-2513:10 UTCm62610 19.86NGVD294VUSGSSA
2022-05-2513:10 UTCm62611 18.77NAVD884VUSGSSA
2022-05-2513:10 UTCm72019119.23  4VUSGSSA
2024-05-0816:17 UTCm62610 21.35NGVD294VUSGSSA
2024-05-0816:17 UTCm62611 20.26NAVD884VUSGSSA
2024-05-0816:17 UTCm72019117.74  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
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.