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Groundwater levels for the Nation

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USGS 404735073424101 N 9308. 2

Nassau County, New York
Latitude  40°47'35", Longitude  73°42'40" NAD27
Land-surface elevation 15.2 feet above NGVD29
The depth of the well is 410 feet below land surface.
The depth of the hole is 446 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
1981-11-2416:05 UTCm62610 5.98NGVD291OUSGSSA
1981-11-2416:05 UTCm62611 4.89NAVD881OUSGSSA
1981-11-2416:05 UTCm720199.22  1OUSGSSA
1982-01-0713:48 UTCm62610 1.82NGVD291OUSGSSA
1982-01-0713:48 UTCm62611 0.73NAVD881OUSGSSA
1982-01-0713:48 UTCm7201913.38  1OUSGSSA
1983-01-1214:40 UTCm62610 1.39NGVD294OUSGSSA
1983-01-1214:40 UTCm62611 0.30NAVD884OUSGSSA
1983-01-1214:40 UTCm7201913.81  4OUSGSSA
1984-01-1714:30 UTCm62610 -0.01NGVD294OUSGSSA
1984-01-1714:30 UTCm62611 -1.10NAVD884OUSGSSA
1984-01-1714:30 UTCm7201915.21  4OUSGSSA
1985-01-0313:08 UTCm62610 7.14NGVD294OUSGSSA
1985-01-0313:08 UTCm62611 6.05NAVD884OUSGSSA
1985-01-0313:08 UTCm720198.06  4OUSGSSA
1986-02-1319:10 UTCm62610 2.08NGVD294OUSGSSA
1986-02-1319:10 UTCm62611 0.99NAVD884OUSGSSA
1986-02-1319:10 UTCm7201913.12  4OUSGSSA
1987-01-1515:35 UTCm62610 1.73NGVD294OUSGSSA
1987-01-1515:35 UTCm62611 0.64NAVD884OUSGSSA
1987-01-1515:35 UTCm7201913.47  4OUSGSSA
1987-01-1515:40 UTCm62610 1.73NGVD294OUSGSSA
1987-01-1515:40 UTCm62611 0.64NAVD884OUSGSSA
1987-01-1515:40 UTCm7201913.47  4OUSGSSA
1988-12-1914:50 UTCm62610 0.85NGVD294OUSGSSA
1988-12-1914:50 UTCm62611 -0.24NAVD884OUSGSSA
1988-12-1914:50 UTCm7201914.35  4OUSGSSA
1990-04-0613:38 UTCm62610 5.80NGVD294OUSGSSA
1990-04-0613:38 UTCm62611 4.71NAVD884OUSGSSA
1990-04-0613:38 UTCm720199.40  4OUSGSSA
1991-04-1114:50 UTCm62610 -0.46NGVD294OUSGSSA
1991-04-1114:50 UTCm62611 -1.55NAVD884OUSGSSA
1991-04-1114:50 UTCm7201915.66  4OUSGSSA
1992-03-2018:20 UTCm62610 10.00NGVD294OUSGSSA
1992-03-2018:20 UTCm62611 8.91NAVD884OUSGSSA
1992-03-2018:20 UTCm720195.20  4OUSGSSA
1993-04-0816:18 UTCm62610 8.77NGVD294OUSGSSA
1993-04-0816:18 UTCm62611 7.68NAVD884OUSGSSA
1993-04-0816:18 UTCm720196.43  4OUSGSSA
1994-05-0514:15 UTCm62610 4.58NGVD294OUSGSSA
1994-05-0514:15 UTCm62611 3.49NAVD884OUSGSSA
1994-05-0514:15 UTCm7201910.62  4OUSGSSA
1995-04-1313:48 UTCm62610 5.42NGVD294OUSGSSA
1995-04-1313:48 UTCm62611 4.33NAVD884OUSGSSA
1995-04-1313:48 UTCm720199.78  4OUSGSSA
2003-03-2615:30 UTCm62610 5.87NGVD291SUSGSSA
2003-03-2615:30 UTCm62611 4.78NAVD881SUSGSSA
2003-03-2615:30 UTCm720199.33  1SUSGSSA
2004-04-0815:30 UTCm62610 4.17NGVD291SUSGSSA
2004-04-0815:30 UTCm62611 3.08NAVD881SUSGSSA
2004-04-0815:30 UTCm7201911.03  1SUSGSSA
2005-03-3015:15 UTCm62610 15.09NGVD291SUSGSSA
2005-03-3015:15 UTCm62611 14.00NAVD881SUSGSSA
2005-03-3015:15 UTCm720190.11  1SUSGSSA
2006-03-2918:00 UTCm62610 15.37NGVD291SUSGSSA
2006-03-2918:00 UTCm62611 14.28NAVD881SUSGSSA
2006-03-2918:00 UTCm72019-0.17  1SUSGSSA
2007-03-2215:06 UTCm62610 9.89NGVD291SUSGSSA
2007-03-2215:06 UTCm62611 8.80NAVD881SUSGSSA
2007-03-2215:06 UTCm720195.31  1SUSGSSA
2008-04-1616:12 UTCm62610 6.27NGVD291SUSGSSA
2008-04-1616:12 UTCm62611 5.18NAVD881SUSGSSA
2008-04-1616:12 UTCm720198.93  1SUSGSSA
2010-05-0414:31 UTCm62610 6.45NGVD291S  A
2010-05-0414:31 UTCm62611 5.36NAVD881S  A
2010-05-0414:31 UTCm720198.75  1S  A
2011-04-0514:09 UTCm62610 9.78NGVD291S  A
2011-04-0514:09 UTCm62611 8.69NAVD881S  A
2011-04-0514:09 UTCm720195.42  1S  A
2012-04-0916:32 UTCm62610 15.09NGVD294S  A
2012-04-0916:32 UTCm62611 14.00NAVD884S  A
2012-04-0916:32 UTCm720190.11  4S  A
2013-04-1016:06 UTCm62610 13.89NGVD294S  A
2013-04-1016:06 UTCm62611 12.80NAVD884S  A
2013-04-1016:06 UTCm720191.31  4S  A
2014-04-1116:00 UTCm62610 6.20NGVD294S  A
2014-04-1116:00 UTCm62611 5.11NAVD884S  A
2014-04-1116:00 UTCm720199.00  4S  A
2015-04-0618:48 UTCm62610 15.01NGVD294S  A
2015-04-0618:48 UTCm62611 13.92NAVD884S  A
2015-04-0618:48 UTCm720190.19  4S  A
2016-04-1917:25 UTCm62610 9.61NGVD291SUSGSSA
2016-04-1917:25 UTCm62611 8.52NAVD881SUSGSSA
2016-04-1917:25 UTCm720195.59  1SUSGSSA
2017-04-1015:58 UTCm62610 16.01NGVD291SUSGSSA
2017-04-1015:58 UTCm62611 14.92NAVD881SUSGSSA
2017-04-1015:58 UTCm72019-0.81  1SUSGSSA
2018-04-1214:16 UTCm62610 15.58NGVD291SUSGSSA
2018-04-1214:16 UTCm62611 14.49NAVD881SUSGSSA
2018-04-1214:16 UTCm72019-0.38  1SUSGSSA
2019-04-2916:00 UTCm62610 15.40NGVD291VUSGSSA
2019-04-2916:00 UTCm62611 14.31NAVD881VUSGSSA
2019-04-2916:00 UTCm72019-0.20  1VUSGSSA
2021-04-1315:00 UTCm62610 13.61NGVD291VUSGSSA
2021-04-1315:00 UTCm62611 12.52NAVD881VUSGSSA
2021-04-1315:00 UTCm720191.59  1VUSGSSA
2022-05-1015:39 UTCm62610 11.56NGVD291SUSGSSA
2022-05-1015:39 UTCm62611 10.47NAVD881SUSGSSA
2022-05-1015:39 UTCm720193.64  1SUSGSSA
2023-04-1014:49 UTCm62610 12.57NGVD291VUSGSSA
2023-04-1014:49 UTCm62611 11.48NAVD881VUSGSSA
2023-04-1014:49 UTCm720192.63  1VUSGSSA
2024-05-0614:19 UTCm62610 12.51NGVD294VUSGSSA
2024-05-0614:19 UTCm62611 11.42NAVD884VUSGSSA
2024-05-0614:19 UTCm720192.69  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 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.