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Groundwater levels for the Nation

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USGS 404806073411101 N 12191. 1

Nassau County, New York
Latitude  40°48'06", Longitude  73°41'11" NAD27
Land-surface elevation 204.5 feet above NGVD29
The depth of the well is 677 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
1993-06-2421:00 UTCm62610 -3.68NGVD291OUSGSSA
1993-06-2421:00 UTCm62611 -4.77NAVD881OUSGSSA
1993-06-2421:00 UTCm72019208.18  1OUSGSSA
1993-10-0519:55 UTCm62610 4.86NGVD294OUSGSSA
1993-10-0519:55 UTCm62611 3.77NAVD884OUSGSSA
1993-10-0519:55 UTCm72019199.64  4OUSGSSA
1993-12-2917:24 UTCm62610 5.65NGVD294OUSGSSA
1993-12-2917:24 UTCm62611 4.56NAVD884OUSGSSA
1993-12-2917:24 UTCm72019198.85  4OUSGSSA
1994-03-3121:23 UTCm62610 4.86NGVD294OUSGSSA
1994-03-3121:23 UTCm62611 3.77NAVD884OUSGSSA
1994-03-3121:23 UTCm72019199.64  4OUSGSSA
1994-06-0717:23 UTCm62610 -6.25NGVD294OUSGSSA
1994-06-0717:23 UTCm62611 -7.34NAVD884OUSGSSA
1994-06-0717:23 UTCm72019210.75  4OUSGSSA
1994-09-1917:41 UTCm62610 -7.90NGVD294OUSGSSA
1994-09-1917:41 UTCm62611 -8.99NAVD884OUSGSSA
1994-09-1917:41 UTCm72019212.40  4OUSGSSA
1994-12-1515:08 UTCm62610 3.25NGVD294OUSGSSA
1994-12-1515:08 UTCm62611 2.16NAVD884OUSGSSA
1994-12-1515:08 UTCm72019201.25  4OUSGSSA
1995-03-1615:14 UTCm62610 6.45NGVD294OUSGSSA
1995-03-1615:14 UTCm62611 5.36NAVD884OUSGSSA
1995-03-1615:14 UTCm72019198.05  4OUSGSSA
1995-06-1319:33 UTCm62610 3.00NGVD294OUSGSSA
1995-06-1319:33 UTCm62611 1.91NAVD884OUSGSSA
1995-06-1319:33 UTCm72019201.50  4OUSGSSA
1995-08-2317:27 UTCm62610 -8.53NGVD294OUSGSSA
1995-08-2317:27 UTCm62611 -9.62NAVD884OUSGSSA
1995-08-2317:27 UTCm72019213.03  4OUSGSSA
1995-12-0517:23 UTCm62610 1.42NGVD294OUSGSSA
1995-12-0517:23 UTCm62611 0.33NAVD884OUSGSSA
1995-12-0517:23 UTCm72019203.08  4OUSGSSA
1996-03-1918:25 UTCm62610 1.05NGVD294OUSGSSA
1996-03-1918:25 UTCm62611 -0.04NAVD884OUSGSSA
1996-03-1918:25 UTCm72019203.45  4OUSGSSA
1996-05-1517:14 UTCm62610 1.73NGVD294OUSGSSA
1996-05-1517:14 UTCm62611 0.64NAVD884OUSGSSA
1996-05-1517:14 UTCm72019202.77  4OUSGSSA
1996-09-1117:40 UTCm62610 -11.41NGVD294OUSGSSA
1996-09-1117:40 UTCm62611 -12.50NAVD884OUSGSSA
1996-09-1117:40 UTCm72019215.91  4OUSGSSA
1996-12-1118:06 UTCm62610 3.99NGVD294OUSGSSA
1996-12-1118:06 UTCm62611 2.90NAVD884OUSGSSA
1996-12-1118:06 UTCm72019200.51  4OUSGSSA
1997-03-1015:15 UTCm62610 1.17NGVD291OUSGSSA
1997-03-1015:15 UTCm62611 0.08NAVD881OUSGSSA
1997-03-1015:15 UTCm72019203.33  1OUSGSSA
2004-03-2219:15 UTCm62610 2.05NGVD291SUSGSSA
2004-03-2219:15 UTCm62611 0.96NAVD881SUSGSSA
2004-03-2219:15 UTCm72019202.45  1SUSGSSA
2005-03-3015:55 UTCm62610 13.94NGVD291SUSGSSA
2005-03-3015:55 UTCm62611 12.85NAVD881SUSGSSA
2005-03-3015:55 UTCm72019190.56  1SUSGSSA
2006-03-2918:15 UTCm62610 15.50NGVD291SUSGSSA
2006-03-2918:15 UTCm62611 14.41NAVD881SUSGSSA
2006-03-2918:15 UTCm72019189.00  1SUSGSSA
2008-04-1617:20 UTCm62610 8.83NGVD291SUSGSSA
2008-04-1617:20 UTCm62611 7.74NAVD881SUSGSSA
2008-04-1617:20 UTCm72019195.67  1SUSGSSA
2010-04-2014:06 UTCm62610 11.20NGVD291T  A
2010-04-2014:06 UTCm62611 10.11NAVD881T  A
2010-04-2014:06 UTCm72019193.30  1T  A
2010-05-0414:45 UTCm62610 9.00NGVD291S  A
2010-05-0414:45 UTCm62611 7.91NAVD881S  A
2010-05-0414:45 UTCm72019195.50  1S  A
2011-04-0514:27 UTCm62610 12.00NGVD291T  A
2011-04-0514:27 UTCm62611 10.91NAVD881T  A
2011-04-0514:27 UTCm72019192.50  1T  A
2012-04-0916:45 UTCm62610 15.50NGVD294S  A
2012-04-0916:45 UTCm62611 14.41NAVD884S  A
2012-04-0916:45 UTCm72019189.00  4S  A
2013-04-1016:14 UTCm62610 16.69NGVD294S  A
2013-04-1016:14 UTCm62611 15.60NAVD884S  A
2013-04-1016:14 UTCm72019187.81  4S  A
2013-07-2916:36 UTCm62610 -6.33NGVD291TUSGSSA
2013-07-2916:36 UTCm62611 -7.42NAVD881TUSGSSA
2013-07-2916:36 UTCm72019210.83  1TUSGSSA
2014-04-1116:20 UTCm62610 9.74NGVD294S  A
2014-04-1116:20 UTCm62611 8.65NAVD884S  A
2014-04-1116:20 UTCm72019194.76  4S  A
2015-04-0619:01 UTCm62610 16.41NGVD294S  A
2015-04-0619:01 UTCm62611 15.32NAVD884S  A
2015-04-0619:01 UTCm72019188.09  4S  A
2016-04-1917:51 UTCm62610 12.19NGVD291SUSGSSA
2016-04-1917:51 UTCm62611 11.10NAVD881SUSGSSA
2016-04-1917:51 UTCm72019192.31  1SUSGSSA
2018-04-1214:46 UTCm62610 16.35NGVD291SUSGSSA
2018-04-1214:46 UTCm62611 15.26NAVD881SUSGSSA
2018-04-1214:46 UTCm72019188.15  1SUSGSSA
2019-04-2916:30 UTCm62610 15.65NGVD291VUSGSSA
2019-04-2916:30 UTCm62611 14.56NAVD881VUSGSSA
2019-04-2916:30 UTCm72019188.85  1VUSGSSA
2020-09-2916:30 UTCm62610 6.57NGVD291VUSGSSA
2020-09-2916:30 UTCm62611 5.48NAVD881VUSGSSA
2020-09-2916:30 UTCm72019197.93  1VUSGSSA
2021-04-1315:20 UTCm62610 15.00NGVD291VUSGSSA
2021-04-1315:20 UTCm62611 13.91NAVD881VUSGSSA
2021-04-1315:20 UTCm72019189.50  1VUSGSSA
2022-05-1016:04 UTCm62610 14.98NGVD291VUSGSSA
2022-05-1016:04 UTCm62611 13.89NAVD881VUSGSSA
2022-05-1016:04 UTCm72019189.52  1VUSGSSA
2023-04-1015:25 UTCm62610 13.28NGVD291VUSGSSA
2023-04-1015:25 UTCm62611 12.19NAVD881VUSGSSA
2023-04-1015:25 UTCm72019191.22  1VUSGSSA
2024-05-0614:34 UTCm62610 13.84NGVD294VUSGSSA
2024-05-0614:34 UTCm62611 12.75NAVD884VUSGSSA
2024-05-0614:34 UTCm72019190.66  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.