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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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  • 404818073293001
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USGS 404818073293001 N 11453. 1

Nassau County, New York
Latitude  40°48'18.7", Longitude  73°29'28.1" NAD83
Land-surface elevation 207.5 feet above NGVD29
The depth of the well is 865 feet below land surface.
The depth of the hole is 865 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 Port Washington Aquifer (112PGQF) local aquifer.
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Water-level
date-time
accuracy
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Parameter
code
Water
level,
feet
below
land
surface
Water
level,
feet
above
specific
vertical
datum
Referenced
vertical
datum
?
 
Status
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Method of
measurement
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Measuring
agency
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measurement
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Water-level
approval
status
1991-03-2015:05 UTCm62610 50.15NGVD291OUSGSSA
1991-03-2015:05 UTCm62611 49.06NAVD881OUSGSSA
1991-03-2015:05 UTCm72019157.35  1OUSGSSA
1992-03-1615:10 UTCm62610 43.68NGVD291OUSGSSA
1992-03-1615:10 UTCm62611 42.59NAVD881OUSGSSA
1992-03-1615:10 UTCm72019163.82  1OUSGSSA
1992-04-2314:45 UTCm62610 43.75NGVD291OUSGSSA
1992-04-2314:45 UTCm62611 42.66NAVD881OUSGSSA
1992-04-2314:45 UTCm72019163.75  1OUSGSSA
1992-05-1414:26 UTCm62610 43.48NGVD291OUSGSSA
1992-05-1414:26 UTCm62611 42.39NAVD881OUSGSSA
1992-05-1414:26 UTCm72019164.02  1OUSGSSA
1992-06-0414:32 UTCm62610 43.12NGVD291OUSGSSA
1992-06-0414:32 UTCm62611 42.03NAVD881OUSGSSA
1992-06-0414:32 UTCm72019164.38  1OUSGSSA
1992-06-1612:10 UTCm62610 44.37NGVD291OUSGSSA
1992-06-1612:10 UTCm62611 43.28NAVD881OUSGSSA
1992-06-1612:10 UTCm72019163.13  1OUSGSSA
1992-07-1412:51 UTCm62610 44.00NGVD291OUSGSSA
1992-07-1412:51 UTCm62611 42.91NAVD881OUSGSSA
1992-07-1412:51 UTCm72019163.50  1OUSGSSA
1992-07-2218:38 UTCm62610 43.67NGVD291OUSGSSA
1992-07-2218:38 UTCm62611 42.58NAVD881OUSGSSA
1992-07-2218:38 UTCm72019163.83  1OUSGSSA
1992-08-2013:40 UTCm62610 44.13NGVD291OUSGSSA
1992-08-2013:40 UTCm62611 43.04NAVD881OUSGSSA
1992-08-2013:40 UTCm72019163.37  1OUSGSSA
1992-09-3011:49 UTCm62610 44.29NGVD291OUSGSSA
1992-09-3011:49 UTCm62611 43.20NAVD881OUSGSSA
1992-09-3011:49 UTCm72019163.21  1OUSGSSA
1992-10-2013:24 UTCm62610 44.30NGVD291OUSGSSA
1992-10-2013:24 UTCm62611 43.21NAVD881OUSGSSA
1992-10-2013:24 UTCm72019163.20  1OUSGSSA
1992-11-1814:40 UTCm62610 44.76NGVD291OUSGSSA
1992-11-1814:40 UTCm62611 43.67NAVD881OUSGSSA
1992-11-1814:40 UTCm72019162.74  1OUSGSSA
1993-01-0415:02 UTCm62610 46.36NGVD291OUSGSSA
1993-01-0415:02 UTCm62611 45.27NAVD881OUSGSSA
1993-01-0415:02 UTCm72019161.14  1OUSGSSA
1993-01-1915:36 UTCm62610 46.27NGVD291OUSGSSA
1993-01-1915:36 UTCm62611 45.18NAVD881OUSGSSA
1993-01-1915:36 UTCm72019161.23  1OUSGSSA
1993-02-1814:15 UTCm62610 45.42NGVD291OUSGSSA
1993-02-1814:15 UTCm62611 44.33NAVD881OUSGSSA
1993-02-1814:15 UTCm72019162.08  1OUSGSSA
1993-03-2513:25 UTCm62610 46.54NGVD291OUSGSSA
1993-03-2513:25 UTCm62611 45.45NAVD881OUSGSSA
1993-03-2513:25 UTCm72019160.96  1OUSGSSA
1993-04-2113:57 UTCm62610 46.87NGVD291OUSGSSA
1993-04-2113:57 UTCm62611 45.78NAVD881OUSGSSA
1993-04-2113:57 UTCm72019160.63  1OUSGSSA
1993-05-1711:42 UTCm62610 46.52NGVD291OUSGSSA
1993-05-1711:42 UTCm62611 45.43NAVD881OUSGSSA
1993-05-1711:42 UTCm72019160.98  1OUSGSSA
1993-06-1613:02 UTCm62610 45.76NGVD291OUSGSSA
1993-06-1613:02 UTCm62611 44.67NAVD881OUSGSSA
1993-06-1613:02 UTCm72019161.74  1OUSGSSA
1993-06-2212:15 UTCm62610 45.73NGVD291OUSGSSA
1993-06-2212:15 UTCm62611 44.64NAVD881OUSGSSA
1993-06-2212:15 UTCm72019161.77  1OUSGSSA
1993-07-1614:35 UTCm62610 44.77NGVD291OUSGSSA
1993-07-1614:35 UTCm62611 43.68NAVD881OUSGSSA
1993-07-1614:35 UTCm72019162.73  1OUSGSSA
1993-08-1813:17 UTCm62610 44.41NGVD291OUSGSSA
1993-08-1813:17 UTCm62611 43.32NAVD881OUSGSSA
1993-08-1813:17 UTCm72019163.09  1OUSGSSA
1993-09-2315:12 UTCm62610 44.62NGVD291OUSGSSA
1993-09-2315:12 UTCm62611 43.53NAVD881OUSGSSA
1993-09-2315:12 UTCm72019162.88  1OUSGSSA
1993-10-2513:45 UTCm62610 45.20NGVD291OUSGSSA
1993-10-2513:45 UTCm62611 44.11NAVD881OUSGSSA
1993-10-2513:45 UTCm72019162.30  1OUSGSSA
1993-11-2300:17 UTCm62610 45.40NGVD291OUSGSSA
1993-11-2300:17 UTCm62611 44.31NAVD881OUSGSSA
1993-11-2300:17 UTCm72019162.10  1OUSGSSA
1993-12-2014:45 UTCm62610 45.79NGVD291OUSGSSA
1993-12-2014:45 UTCm62611 44.70NAVD881OUSGSSA
1993-12-2014:45 UTCm72019161.71  1OUSGSSA
1994-03-3013:30 UTCm62610 43.39NGVD291OUSGSSA
1994-03-3013:30 UTCm62611 42.30NAVD881OUSGSSA
1994-03-3013:30 UTCm72019164.11  1OUSGSSA
1994-04-2012:13 UTCm62610 43.73NGVD291OUSGSSA
1994-04-2012:13 UTCm62611 42.64NAVD881OUSGSSA
1994-04-2012:13 UTCm72019163.77  1OUSGSSA
1994-05-1813:59 UTCm62610 43.91NGVD291OUSGSSA
1994-05-1813:59 UTCm62611 42.82NAVD881OUSGSSA
1994-05-1813:59 UTCm72019163.59  1OUSGSSA
1994-06-0914:53 UTCm62610 40.15NGVD291OUSGSSA
1994-06-0914:53 UTCm62611 39.06NAVD881OUSGSSA
1994-06-0914:53 UTCm72019167.35  1OUSGSSA
1994-06-1711:54 UTCm62610 39.86NGVD291OUSGSSA
1994-06-1711:54 UTCm62611 38.77NAVD881OUSGSSA
1994-06-1711:54 UTCm72019167.64  1OUSGSSA
1994-07-1813:40 UTCm62610 39.01NGVD291OUSGSSA
1994-07-1813:40 UTCm62611 37.92NAVD881OUSGSSA
1994-07-1813:40 UTCm72019168.49  1OUSGSSA
1994-08-2413:11 UTCm62610 39.24NGVD291OUSGSSA
1994-08-2413:11 UTCm62611 38.15NAVD881OUSGSSA
1994-08-2413:11 UTCm72019168.26  1OUSGSSA
1994-09-2013:20 UTCm62610 39.07NGVD291OUSGSSA
1994-09-2013:20 UTCm62611 37.98NAVD881OUSGSSA
1994-09-2013:20 UTCm72019168.43  1OUSGSSA
1994-10-2013:40 UTCm62610 39.90NGVD291OUSGSSA
1994-10-2013:40 UTCm62611 38.81NAVD881OUSGSSA
1994-10-2013:40 UTCm72019167.60  1OUSGSSA
1994-12-1314:38 UTCm62610 40.86NGVD291OUSGSSA
1994-12-1314:38 UTCm62611 39.77NAVD881OUSGSSA
1994-12-1314:38 UTCm72019166.64  1OUSGSSA
1995-01-1819:25 UTCm62610 40.82NGVD291OUSGSSA
1995-01-1819:25 UTCm62611 39.73NAVD881OUSGSSA
1995-01-1819:25 UTCm72019166.68  1OUSGSSA
1995-03-1417:05 UTCm62610 41.00NGVD291OUSGSSA
1995-03-1417:05 UTCm62611 39.91NAVD881OUSGSSA
1995-03-1417:05 UTCm72019166.50  1OUSGSSA
1995-05-1811:13 UTCm62610 41.09NGVD291OUSGSSA
1995-05-1811:13 UTCm62611 40.00NAVD881OUSGSSA
1995-05-1811:13 UTCm72019166.41  1OUSGSSA
1995-06-1415:13 UTCm62610 39.98NGVD291OUSGSSA
1995-06-1415:13 UTCm62611 38.89NAVD881OUSGSSA
1995-06-1415:13 UTCm72019167.52  1OUSGSSA
1995-07-2610:52 UTCm62610 39.05NGVD291OUSGSSA
1995-07-2610:52 UTCm62611 37.96NAVD881OUSGSSA
1995-07-2610:52 UTCm72019168.45  1OUSGSSA
1995-09-1911:19 UTCm62610 37.21NGVD291OUSGSSA
1995-09-1911:19 UTCm62611 36.12NAVD881OUSGSSA
1995-09-1911:19 UTCm72019170.29  1OUSGSSA
1995-12-0613:23 UTCm62610 38.81NGVD291OUSGSSA
1995-12-0613:23 UTCm62611 37.72NAVD881OUSGSSA
1995-12-0613:23 UTCm72019168.69  1OUSGSSA
1995-12-0812:28 UTCm62610 38.78NGVD291OUSGSSA
1995-12-0812:28 UTCm62611 37.69NAVD881OUSGSSA
1995-12-0812:28 UTCm72019168.72  1OUSGSSA
1996-01-2214:30 UTCm62610 39.14NGVD291OUSGSSA
1996-01-2214:30 UTCm62611 38.05NAVD881OUSGSSA
1996-01-2214:30 UTCm72019168.36  1OUSGSSA
1996-03-2020:15 UTCm62610 40.85NGVD291OUSGSSA
1996-03-2020:15 UTCm62611 39.76NAVD881OUSGSSA
1996-03-2020:15 UTCm72019166.65  1OUSGSSA
1996-05-1612:12 UTCm62610 38.55NGVD291OUSGSSA
1996-05-1612:12 UTCm62611 37.46NAVD881OUSGSSA
1996-05-1612:12 UTCm72019168.95  1OUSGSSA
1996-06-2811:59 UTCm62610 38.92NGVD291OUSGSSA
1996-06-2811:59 UTCm62611 37.83NAVD881OUSGSSA
1996-06-2811:59 UTCm72019168.58  1OUSGSSA
1996-09-1017:55 UTCm62610 39.00NGVD291OUSGSSA
1996-09-1017:55 UTCm62611 37.91NAVD881OUSGSSA
1996-09-1017:55 UTCm72019168.50  1OUSGSSA
1996-12-1114:30 UTCm62610 40.83NGVD291OUSGSSA
1996-12-1114:30 UTCm62611 39.74NAVD881OUSGSSA
1996-12-1114:30 UTCm72019166.67  1OUSGSSA
1997-03-1115:33 UTCm62610 42.05NGVD291OUSGSSA
1997-03-1115:33 UTCm62611 40.96NAVD881OUSGSSA
1997-03-1115:33 UTCm72019165.45  1OUSGSSA
1997-05-2215:27 UTCm62610 42.51NGVD291OUSGSSA
1997-05-2215:27 UTCm62611 41.42NAVD881OUSGSSA
1997-05-2215:27 UTCm72019164.99  1OUSGSSA
1997-07-2316:49 UTCm62610 40.89NGVD291OUSGSSA
1997-07-2316:49 UTCm62611 39.80NAVD881OUSGSSA
1997-07-2316:49 UTCm72019166.61  1OUSGSSA
1997-08-2117:00 UTCm62610 41.18NGVD291OUSGSSA
1997-08-2117:00 UTCm62611 40.09NAVD881OUSGSSA
1997-08-2117:00 UTCm72019166.32  1OUSGSSA
1997-09-1715:29 UTCm62610 41.22NGVD291OUSGSSA
1997-09-1715:29 UTCm62611 40.13NAVD881OUSGSSA
1997-09-1715:29 UTCm72019166.28  1OUSGSSA
1998-03-2314:20 UTCm62610 43.57NGVD291SUSGSSA
1998-03-2314:20 UTCm62611 42.48NAVD881SUSGSSA
1998-03-2314:20 UTCm72019163.93  1SUSGSSA
1999-03-3018:15 UTCm62610 43.97NGVD291SUSGSSA
1999-03-3018:15 UTCm62611 42.88NAVD881SUSGSSA
1999-03-3018:15 UTCm72019163.53  1SUSGSSA
2000-03-2019:23 UTCm62610 42.01NGVD291SUSGSSA
2000-03-2019:23 UTCm62611 40.92NAVD881SUSGSSA
2000-03-2019:23 UTCm72019165.49  1SUSGSSA
2001-03-2016:51 UTCm62610 42.67NGVD291SUSGSSA
2001-03-2016:51 UTCm62611 41.58NAVD881SUSGSSA
2001-03-2016:51 UTCm72019164.83  1SUSGSSA
2002-03-2215:42 UTCm62610 41.75NGVD291SUSGSSA
2002-03-2215:42 UTCm62611 40.66NAVD881SUSGSSA
2002-03-2215:42 UTCm72019165.75  1SUSGSSA
2002-04-1215:20 UTCm62610 42.34NGVD291SUSGSSA
2002-04-1215:20 UTCm62611 41.25NAVD881SUSGSSA
2002-04-1215:20 UTCm72019165.16  1SUSGSSA
2003-03-1721:30 UTCm62610 41.31NGVD291SUSGSSA
2003-03-1721:30 UTCm62611 40.22NAVD881SUSGSSA
2003-03-1721:30 UTCm72019166.19  1SUSGSSA
2004-03-1517:09 UTCm62610 43.83NGVD291SUSGSSA
2004-03-1517:09 UTCm62611 42.74NAVD881SUSGSSA
2004-03-1517:09 UTCm72019163.67  1SUSGSSA
2005-03-3115:58 UTCm62610 45.35NGVD291SUSGSSA
2005-03-3115:58 UTCm62611 44.26NAVD881SUSGSSA
2005-03-3115:58 UTCm72019162.15  1SUSGSSA
2006-03-2215:44 UTCm62610 47.09NGVD291SUSGSSA
2006-03-2215:44 UTCm62611 46.00NAVD881SUSGSSA
2006-03-2215:44 UTCm72019160.41  1SUSGSSA
2007-03-2616:04 UTCm62610 48.27NGVD291SUSGSSA
2007-03-2616:04 UTCm62611 47.18NAVD881SUSGSSA
2007-03-2616:04 UTCm72019159.23  1SUSGSSA
2008-04-3017:36 UTCm62610 48.33NGVD291SUSGSSA
2008-04-3017:36 UTCm62611 47.24NAVD881SUSGSSA
2008-04-3017:36 UTCm72019159.17  1SUSGSSA
2009-04-2315:50 UTCm62610 48.40NGVD291SUSGSSA
2009-04-2315:50 UTCm62611 47.31NAVD881SUSGSSA
2009-04-2315:50 UTCm72019159.10  1SUSGSSA
2010-04-2118:04 UTCm62610 49.21NGVD291SUSGSSA
2010-04-2118:04 UTCm62611 48.12NAVD881SUSGSSA
2010-04-2118:04 UTCm72019158.29  1SUSGSSA
2011-04-2217:15 UTCm62610 49.07NGVD291SUSGSSA
2011-04-2217:15 UTCm62611 47.98NAVD881SUSGSSA
2011-04-2217:15 UTCm72019158.43  1SUSGSSA
2013-04-1817:52 UTCm62610 49.48NGVD291SUSGSSA
2013-04-1817:52 UTCm62611 48.39NAVD881SUSGSSA
2013-04-1817:52 UTCm72019158.02  1SUSGSSA
2014-04-1715:26 UTCm62610 47.98NGVD291SUSGSSA
2014-04-1715:26 UTCm62611 46.89NAVD881SUSGSSA
2014-04-1715:26 UTCm72019159.52  1SUSGSSA
2016-04-2017:48 UTCm62610 47.89NGVD291TUSGSSA
2016-04-2017:48 UTCm62611 46.80NAVD881TUSGSSA
2016-04-2017:48 UTCm72019159.61  1TUSGSSA
2017-04-1916:00 UTCm62610 44.40NGVD291TUSGSSA
2017-04-1916:00 UTCm62611 43.31NAVD881TUSGSSA
2017-04-1916:00 UTCm72019163.10  1TUSGSSA
2019-04-1716:00 UTCm62610 48.17NGVD291VUSGSSA
2019-04-1716:00 UTCm62611 47.08NAVD881VUSGSSA
2019-04-1716:00 UTCm72019159.33  1VUSGSSA
2020-10-2115:50 UTCm62610 47.93NGVD291VUSGSSA
2020-10-2115:50 UTCm62611 46.84NAVD881VUSGSSA
2020-10-2115:50 UTCm72019159.57  1VUSGSSA
2021-04-1915:52 UTCm62610 49.88NGVD291VUSGSSA
2021-04-1915:52 UTCm62611 48.79NAVD881VUSGSSA
2021-04-1915:52 UTCm72019157.62  1VUSGSSA
2022-05-1812:37 UTCm62610 50.46NGVD291VUSGSSA
2022-05-1812:37 UTCm62611 49.37NAVD881VUSGSSA
2022-05-1812:37 UTCm72019157.04  1VUSGSSA
2022-09-2115:01 UTCm62610 47.00NGVD291VUSGSSA
2022-09-2115:01 UTCm62611 45.91NAVD881VUSGSSA
2022-09-2115:01 UTCm72019160.50  1VUSGSSA
2023-04-2717:53 UTCm62610 49.02NGVD291VUSGSSA
2023-04-2717:53 UTCm62611 47.93NAVD881VUSGSSA
2023-04-2717:53 UTCm72019158.48  1VUSGSSA
2024-05-0819:08 UTCm62610 50.82NGVD291VUSGSSA
2024-05-0819:08 UTCm62611 49.73NAVD881VUSGSSA
2024-05-0819:08 UTCm72019156.68  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
Method of measurementOObserved.
Method of measurementSSteel-tape measurement.
Method of measurementTElectric-tape measurement.
Method of measurementVCalibrated electric-tape measurement.
Measuring agencyUSGSU.S. Geological Survey
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.