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Groundwater levels for the Nation

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Agency code = usgs
site_no list =
  • 404404073420201
Minimum number of levels = 1
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USGS 404404073420201 N 9983. 1

Nassau County, New York
Latitude  40°44'07.7", Longitude  73°41'54.4" NAD83
Land-surface elevation 108.0 feet above NGVD29
The depth of the well is 99 feet below land surface.
The depth of the hole is 99 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 Magothy Aquifer (211MAGT) local aquifer.
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Date Time
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Water-level
date-time
accuracy
?
 
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
?
 
Measuring
agency
?
 
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measurement
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Water-level
approval
status
1982-12-1716:43 UTCm62610 31.90NGVD291OUSGSSA
1982-12-1716:43 UTCm62611 30.80NAVD881OUSGSSA
1982-12-1716:43 UTCm7201976.10  1OUSGSSA
1983-04-0616:45 UTCm62610 32.39NGVD291OUSGSSA
1983-04-0616:45 UTCm62611 31.29NAVD881OUSGSSA
1983-04-0616:45 UTCm7201975.61  1OUSGSSA
1983-06-1717:28 UTCm62610 33.71NGVD291OUSGSSA
1983-06-1717:28 UTCm62611 32.61NAVD881OUSGSSA
1983-06-1717:28 UTCm7201974.29  1OUSGSSA
1983-08-11 D62610 34.57NGVD291OUSGSSA
1983-08-11 D62611 33.47NAVD881OUSGSSA
1983-08-11 D7201973.43  1OUSGSSA
1984-04-2418:46 UTCm62610 36.25NGVD291OUSGSSA
1984-04-2418:46 UTCm62611 35.15NAVD881OUSGSSA
1984-04-2418:46 UTCm7201971.75  1OUSGSSA
1987-09-0215:15 UTCm62610 37.74NGVD291OUSGSSA
1987-09-0215:15 UTCm62611 36.64NAVD881OUSGSSA
1987-09-0215:15 UTCm7201970.26  1OUSGSSA
1990-03-2617:15 UTCm62610 42.24NGVD291OUSGSSA
1990-03-2617:15 UTCm62611 41.14NAVD881OUSGSSA
1990-03-2617:15 UTCm7201965.76  1OUSGSSA
1991-03-2018:30 UTCm62610 44.90NGVD291OUSGSSA
1991-03-2018:30 UTCm62611 43.80NAVD881OUSGSSA
1991-03-2018:30 UTCm7201963.10  1OUSGSSA
1992-03-1618:05 UTCm62610 43.61NGVD291OUSGSSA
1992-03-1618:05 UTCm62611 42.51NAVD881OUSGSSA
1992-03-1618:05 UTCm7201964.39  1OUSGSSA
1992-04-2116:59 UTCm62610 42.42NGVD291OUSGSSA
1992-04-2116:59 UTCm62611 41.32NAVD881OUSGSSA
1992-04-2116:59 UTCm7201965.58  1OUSGSSA
1992-05-1216:17 UTCm62610 42.17NGVD291OUSGSSA
1992-05-1216:17 UTCm62611 41.07NAVD881OUSGSSA
1992-05-1216:17 UTCm7201965.83  1OUSGSSA
1992-06-2618:18 UTCm62610 41.55NGVD291OUSGSSA
1992-06-2618:18 UTCm62611 40.45NAVD881OUSGSSA
1992-06-2618:18 UTCm7201966.45  1OUSGSSA
1992-07-2414:44 UTCm62610 42.33NGVD291OUSGSSA
1992-07-2414:44 UTCm62611 41.23NAVD881OUSGSSA
1992-07-2414:44 UTCm7201965.67  1OUSGSSA
1992-08-2014:56 UTCm62610 42.20NGVD291OUSGSSA
1992-08-2014:56 UTCm62611 41.10NAVD881OUSGSSA
1992-08-2014:56 UTCm7201965.80  1OUSGSSA
1992-09-2214:51 UTCm62610 42.22NGVD291OUSGSSA
1992-09-2214:51 UTCm62611 41.12NAVD881OUSGSSA
1992-09-2214:51 UTCm7201965.78  1OUSGSSA
1992-10-2114:54 UTCm62610 41.18NGVD291OUSGSSA
1992-10-2114:54 UTCm62611 40.08NAVD881OUSGSSA
1992-10-2114:54 UTCm7201966.82  1OUSGSSA
1992-11-1916:10 UTCm62610 41.30NGVD291OUSGSSA
1992-11-1916:10 UTCm62611 40.20NAVD881OUSGSSA
1992-11-1916:10 UTCm7201966.70  1OUSGSSA
1993-01-0415:55 UTCm62610 42.26NGVD291OUSGSSA
1993-01-0415:55 UTCm62611 41.16NAVD881OUSGSSA
1993-01-0415:55 UTCm7201965.74  1OUSGSSA
1993-01-2016:09 UTCm62610 42.28NGVD291OUSGSSA
1993-01-2016:09 UTCm62611 41.18NAVD881OUSGSSA
1993-01-2016:09 UTCm7201965.72  1OUSGSSA
1993-02-2516:10 UTCm62610 42.44NGVD291OUSGSSA
1993-02-2516:10 UTCm62611 41.34NAVD881OUSGSSA
1993-02-2516:10 UTCm7201965.56  1OUSGSSA
1993-03-2318:42 UTCm62610 42.53NGVD291OUSGSSA
1993-03-2318:42 UTCm62611 41.43NAVD881OUSGSSA
1993-03-2318:42 UTCm7201965.47  1OUSGSSA
1993-04-2014:22 UTCm62610 42.81NGVD291OUSGSSA
1993-04-2014:22 UTCm62611 41.71NAVD881OUSGSSA
1993-04-2014:22 UTCm7201965.19  1OUSGSSA
1993-05-1314:44 UTCm62610 43.21NGVD291OUSGSSA
1993-05-1314:44 UTCm62611 42.11NAVD881OUSGSSA
1993-05-1314:44 UTCm7201964.79  1OUSGSSA
1993-06-1514:00 UTCm62610 43.43NGVD291OUSGSSA
1993-06-1514:00 UTCm62611 42.33NAVD881OUSGSSA
1993-06-1514:00 UTCm7201964.57  1OUSGSSA
1993-07-1415:30 UTCm62610 43.14NGVD291OUSGSSA
1993-07-1415:30 UTCm62611 42.04NAVD881OUSGSSA
1993-07-1415:30 UTCm7201964.86  1OUSGSSA
1993-08-1815:04 UTCm62610 42.72NGVD291OUSGSSA
1993-08-1815:04 UTCm62611 41.62NAVD881OUSGSSA
1993-08-1815:04 UTCm7201965.28  1OUSGSSA
1993-09-2314:48 UTCm62610 42.30NGVD291OUSGSSA
1993-09-2314:48 UTCm62611 41.20NAVD881OUSGSSA
1993-09-2314:48 UTCm7201965.70  1OUSGSSA
1993-10-2614:23 UTCm62610 42.10NGVD291OUSGSSA
1993-10-2614:23 UTCm62611 41.00NAVD881OUSGSSA
1993-10-2614:23 UTCm7201965.90  1OUSGSSA
1993-11-2216:36 UTCm62610 41.93NGVD291OUSGSSA
1993-11-2216:36 UTCm62611 40.83NAVD881OUSGSSA
1993-11-2216:36 UTCm7201966.07  1OUSGSSA
1993-12-2314:45 UTCm62610 41.71NGVD291OUSGSSA
1993-12-2314:45 UTCm62611 40.61NAVD881OUSGSSA
1993-12-2314:45 UTCm7201966.29  1OUSGSSA
1994-03-3014:53 UTCm62610 41.82NGVD291OUSGSSA
1994-03-3014:53 UTCm62611 40.72NAVD881OUSGSSA
1994-03-3014:53 UTCm7201966.18  1OUSGSSA
1994-04-1914:43 UTCm62610 42.00NGVD291OUSGSSA
1994-04-1914:43 UTCm62611 40.90NAVD881OUSGSSA
1994-04-1914:43 UTCm7201966.00  1OUSGSSA
1994-05-2517:55 UTCm62610 42.45NGVD291OUSGSSA
1994-05-2517:55 UTCm62611 41.35NAVD881OUSGSSA
1994-05-2517:55 UTCm7201965.55  1OUSGSSA
1994-06-2017:05 UTCm62610 42.58NGVD291OUSGSSA
1994-06-2017:05 UTCm62611 41.48NAVD881OUSGSSA
1994-06-2017:05 UTCm7201965.42  1OUSGSSA
1994-07-2013:42 UTCm62610 42.30NGVD291OUSGSSA
1994-07-2013:42 UTCm62611 41.20NAVD881OUSGSSA
1994-07-2013:42 UTCm7201965.70  1OUSGSSA
1994-08-2613:17 UTCm62610 42.21NGVD291OUSGSSA
1994-08-2613:17 UTCm62611 41.11NAVD881OUSGSSA
1994-08-2613:17 UTCm7201965.79  1OUSGSSA
1994-09-2115:08 UTCm62610 42.02NGVD291OUSGSSA
1994-09-2115:08 UTCm62611 40.92NAVD881OUSGSSA
1994-09-2115:08 UTCm7201965.98  1OUSGSSA
1994-10-1816:15 UTCm62610 41.98NGVD291OUSGSSA
1994-10-1816:15 UTCm62611 40.88NAVD881OUSGSSA
1994-10-1816:15 UTCm7201966.02  1OUSGSSA
1994-12-1416:53 UTCm62610 41.58NGVD291OUSGSSA
1994-12-1416:53 UTCm62611 40.48NAVD881OUSGSSA
1994-12-1416:53 UTCm7201966.42  1OUSGSSA
1995-01-2615:41 UTCm62610 41.53NGVD291OUSGSSA
1995-01-2615:41 UTCm62611 40.43NAVD881OUSGSSA
1995-01-2615:41 UTCm7201966.47  1OUSGSSA
1995-03-1318:59 UTCm62610 41.20NGVD291OUSGSSA
1995-03-1318:59 UTCm62611 40.10NAVD881OUSGSSA
1995-03-1318:59 UTCm7201966.80  1OUSGSSA
1995-05-1517:02 UTCm62610 40.86NGVD291OUSGSSA
1995-05-1517:02 UTCm62611 39.76NAVD881OUSGSSA
1995-05-1517:02 UTCm7201967.14  1OUSGSSA
1995-07-2516:55 UTCm62610 40.48NGVD291OUSGSSA
1995-07-2516:55 UTCm62611 39.38NAVD881OUSGSSA
1995-07-2516:55 UTCm7201967.52  1OUSGSSA
1995-09-1511:53 UTCm62610 39.90NGVD291OUSGSSA
1995-09-1511:53 UTCm62611 38.80NAVD881OUSGSSA
1995-09-1511:53 UTCm7201968.10  1OUSGSSA
1995-11-2815:50 UTCm62610 39.50NGVD291OUSGSSA
1995-11-2815:50 UTCm62611 38.40NAVD881OUSGSSA
1995-11-2815:50 UTCm7201968.50  1OUSGSSA
1996-01-2315:40 UTCm62610 40.30NGVD291OUSGSSA
1996-01-2315:40 UTCm62611 39.20NAVD881OUSGSSA
1996-01-2315:40 UTCm7201967.70  1OUSGSSA
1996-03-1218:55 UTCm62610 39.42NGVD291OUSGSSA
1996-03-1218:55 UTCm62611 38.32NAVD881OUSGSSA
1996-03-1218:55 UTCm7201968.58  1OUSGSSA
1996-06-2715:15 UTCm62610 40.60NGVD291OUSGSSA
1996-06-2715:15 UTCm62611 39.50NAVD881OUSGSSA
1996-06-2715:15 UTCm7201967.40  1OUSGSSA
1996-09-2414:36 UTCm62610 40.99NGVD291OUSGSSA
1996-09-2414:36 UTCm62611 39.89NAVD881OUSGSSA
1996-09-2414:36 UTCm7201967.01  1OUSGSSA
1997-03-1020:17 UTCm62610 42.48NGVD291OUSGSSA
1997-03-1020:17 UTCm62611 41.38NAVD881OUSGSSA
1997-03-1020:17 UTCm7201965.52  1OUSGSSA
1998-03-2319:17 UTCm62610 43.02NGVD291SUSGSSA
1998-03-2319:17 UTCm62611 41.92NAVD881SUSGSSA
1998-03-2319:17 UTCm7201964.98  1SUSGSSA
1999-03-3018:51 UTCm62610 42.76NGVD291SUSGSSA
1999-03-3018:51 UTCm62611 41.66NAVD881SUSGSSA
1999-03-3018:51 UTCm7201965.24  1SUSGSSA
2000-03-2013:46 UTCm62610 40.13NGVD291SUSGSSA
2000-03-2013:46 UTCm62611 39.03NAVD881SUSGSSA
2000-03-2013:46 UTCm7201967.87  1SUSGSSA
2001-03-1915:56 UTCm62610 41.00NGVD291SUSGSSA
2001-03-1915:56 UTCm62611 39.90NAVD881SUSGSSA
2001-03-1915:56 UTCm7201967.00  1SUSGSSA
2002-03-2116:46 UTCm62610 40.10NGVD291SUSGSSA
2002-03-2116:46 UTCm62611 39.00NAVD881SUSGSSA
2002-03-2116:46 UTCm7201967.90  1SUSGSSA
2003-03-1717:10 UTCm62610 39.62NGVD291SUSGSSA
2003-03-1717:10 UTCm62611 38.52NAVD881SUSGSSA
2003-03-1717:10 UTCm7201968.38  1SUSGSSA
2004-03-1518:35 UTCm62610 42.49NGVD291SUSGSSA
2004-03-1518:35 UTCm62611 41.39NAVD881SUSGSSA
2004-03-1518:35 UTCm7201965.51  1SUSGSSA
2005-04-0118:00 UTCm62610 44.11NGVD291SUSGSSA
2005-04-0118:00 UTCm62611 43.01NAVD881SUSGSSA
2005-04-0118:00 UTCm7201963.89  1SUSGSSA
2006-03-2315:53 UTCm62610 47.60NGVD291SUSGSSA
2006-03-2315:53 UTCm62611 46.50NAVD881SUSGSSA
2006-03-2315:53 UTCm7201960.40  1SUSGSSA
2007-03-2817:12 UTCm62610 48.18NGVD291SUSGSSA
2007-03-2817:12 UTCm62611 47.08NAVD881SUSGSSA
2007-03-2817:12 UTCm7201959.82  1SUSGSSA
2008-05-0515:15 UTCm62610 48.56NGVD291S  A
2008-05-0515:15 UTCm62611 47.46NAVD881S  A
2008-05-0515:15 UTCm7201959.44  1S  A
2009-04-2417:32 UTCm62610 47.78NGVD291SUSGSSA
2009-04-2417:32 UTCm62611 46.68NAVD881SUSGSSA
2009-04-2417:32 UTCm7201960.22  1SUSGSSA
2010-04-2317:37 UTCm62610 50.92NGVD291SUSGSSA
2010-04-2317:37 UTCm62611 49.82NAVD881SUSGSSA
2010-04-2317:37 UTCm7201957.08  1SUSGSSA
2011-04-2218:45 UTCm62610 49.42NGVD291SUSGSSA
2011-04-2218:45 UTCm62611 48.32NAVD881SUSGSSA
2011-04-2218:45 UTCm7201958.58  1SUSGSSA
2012-04-1818:35 UTCm62610 51.16NGVD291SUSGSSA
2012-04-1818:35 UTCm62611 50.06NAVD881SUSGSSA
2012-04-1818:35 UTCm7201956.84  1SUSGSSA
2013-04-1823:00 UTCm62610 49.55NGVD291SUSGSSA
2013-04-1823:00 UTCm62611 48.45NAVD881SUSGSSA
2013-04-1823:00 UTCm7201958.45  1SUSGSSA
2014-04-1719:24 UTCm62610 47.42NGVD291SUSGSSA
2014-04-1719:24 UTCm62611 46.32NAVD881SUSGSSA
2014-04-1719:24 UTCm7201960.58  1SUSGSSA
2015-04-2516:01 UTCm62610 49.18NGVD291SUSGSSA
2015-04-2516:01 UTCm62611 48.08NAVD881SUSGSSA
2015-04-2516:01 UTCm7201958.82  1SUSGSSA
2016-04-2220:53 UTCm62610 47.35NGVD291TUSGSSA
2016-04-2220:53 UTCm62611 46.25NAVD881TUSGSSA
2016-04-2220:53 UTCm7201960.65  1TUSGSSA
2017-04-2017:30 UTCm62610 45.28NGVD291TUSGSSA
2017-04-2017:30 UTCm62611 44.18NAVD881TUSGSSA
2017-04-2017:30 UTCm7201962.72  1TUSGSSA
2019-04-1817:09 UTCm62610 49.23NGVD291VUSGSSA
2019-04-1817:09 UTCm62611 48.13NAVD881VUSGSSA
2019-04-1817:09 UTCm7201958.77  1VUSGSSA
2021-04-2219:15 UTCm62610 50.43NGVD291VUSGSSA
2021-04-2219:15 UTCm62611 49.33NAVD881VUSGSSA
2021-04-2219:15 UTCm7201957.57  1VUSGSSA
2022-05-1917:09 UTCm62610 50.80NGVD291VUSGSSA
2022-05-1917:09 UTCm62611 49.70NAVD881VUSGSSA
2022-05-1917:09 UTCm7201957.20  1VUSGSSA
2023-05-1120:00 UTCm62610 48.70NGVD291VUSGSSA
2023-05-1120:00 UTCm62611 47.60NAVD881VUSGSSA
2023-05-1120:00 UTCm7201959.30  1VUSGSSA
2024-05-1015:11 UTCm62610 52.92NGVD291VUSGSSA
2024-05-1015:11 UTCm62611 51.82NAVD881VUSGSSA
2024-05-1015:11 UTCm7201955.08  1VUSGSSA

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
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 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.