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Groundwater levels for the Nation

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USGS 404703073370202 N 9190. 1

Nassau County, New York
Latitude  40°47'03", Longitude  73°37'02" NAD27
Land-surface elevation 156.0 feet above NGVD29
The depth of the well is 133 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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1977-06-0718:15 UTCm62610 71.23NGVD291OUSGSSA
1977-06-0718:15 UTCm62611 70.12NAVD881OUSGSSA
1977-06-0718:15 UTCm7201984.77  1OUSGSSA
1977-09-0816:20 UTCm62610 70.37NGVD291OUSGSSA
1977-09-0816:20 UTCm62611 69.26NAVD881OUSGSSA
1977-09-0816:20 UTCm7201985.63  1OUSGSSA
1977-12-1616:29 UTCm62610 70.04NGVD291OUSGSSA
1977-12-1616:29 UTCm62611 68.93NAVD881OUSGSSA
1977-12-1616:29 UTCm7201985.96  1OUSGSSA
1978-03-2316:34 UTCm62610 72.20NGVD291OUSGSSA
1978-03-2316:34 UTCm62611 71.09NAVD881OUSGSSA
1978-03-2316:34 UTCm7201983.80  1OUSGSSA
1978-06-0614:40 UTCm62610 73.32NGVD291OUSGSSA
1978-06-0614:40 UTCm62611 72.21NAVD881OUSGSSA
1978-06-0614:40 UTCm7201982.68  1OUSGSSA
1978-09-1516:30 UTCm62610 73.62NGVD291OUSGSSA
1978-09-1516:30 UTCm62611 72.51NAVD881OUSGSSA
1978-09-1516:30 UTCm7201982.38  1OUSGSSA
1978-12-0619:30 UTCm62610 73.04NGVD291OUSGSSA
1978-12-0619:30 UTCm62611 71.93NAVD881OUSGSSA
1978-12-0619:30 UTCm7201982.96  1OUSGSSA
1979-03-0519:35 UTCm62610 72.97NGVD291OUSGSSA
1979-03-0519:35 UTCm62611 71.86NAVD881OUSGSSA
1979-03-0519:35 UTCm7201983.03  1OUSGSSA
1979-06-0519:42 UTCm62610 75.02NGVD291OUSGSSA
1979-06-0519:42 UTCm62611 73.91NAVD881OUSGSSA
1979-06-0519:42 UTCm7201980.98  1OUSGSSA
1979-09-1118:13 UTCm62610 74.75NGVD291OUSGSSA
1979-09-1118:13 UTCm62611 73.64NAVD881OUSGSSA
1979-09-1118:13 UTCm7201981.25  1OUSGSSA
1979-12-1015:30 UTCm62610 74.60NGVD291OUSGSSA
1979-12-1015:30 UTCm62611 73.49NAVD881OUSGSSA
1979-12-1015:30 UTCm7201981.40  1OUSGSSA
1980-03-2018:15 UTCm62610 73.79NGVD291OUSGSSA
1980-03-2018:15 UTCm62611 72.68NAVD881OUSGSSA
1980-03-2018:15 UTCm7201982.21  1OUSGSSA
1980-05-3019:37 UTCm62610 74.29NGVD291OUSGSSA
1980-05-3019:37 UTCm62611 73.18NAVD881OUSGSSA
1980-05-3019:37 UTCm7201981.71  1OUSGSSA
1980-09-0515:32 UTCm62610 73.92NGVD291OUSGSSA
1980-09-0515:32 UTCm62611 72.81NAVD881OUSGSSA
1980-09-0515:32 UTCm7201982.08  1OUSGSSA
1980-12-1819:13 UTCm62610 73.12NGVD291OUSGSSA
1980-12-1819:13 UTCm62611 72.01NAVD881OUSGSSA
1980-12-1819:13 UTCm7201982.88  1OUSGSSA
1981-03-0618:22 UTCm62610 73.02NGVD291OUSGSSA
1981-03-0618:22 UTCm62611 71.91NAVD881OUSGSSA
1981-03-0618:22 UTCm7201982.98  1OUSGSSA
1981-06-0818:44 UTCm62610 71.67NGVD291OUSGSSA
1981-06-0818:44 UTCm62611 70.56NAVD881OUSGSSA
1981-06-0818:44 UTCm7201984.33  1OUSGSSA
1981-10-1615:15 UTCm62610 69.47NGVD291OUSGSSA
1981-10-1615:15 UTCm62611 68.36NAVD881OUSGSSA
1981-10-1615:15 UTCm7201986.53  1OUSGSSA
1982-01-1216:08 UTCm62610 68.62NGVD291OUSGSSA
1982-01-1216:08 UTCm62611 67.51NAVD881OUSGSSA
1982-01-1216:08 UTCm7201987.38  1OUSGSSA
1982-03-2215:50 UTCm62610 67.67NGVD291OUSGSSA
1982-03-2215:50 UTCm62611 66.56NAVD881OUSGSSA
1982-03-2215:50 UTCm7201988.33  1OUSGSSA
1982-07-0915:59 UTCm62610 68.75NGVD291OUSGSSA
1982-07-0915:59 UTCm62611 67.64NAVD881OUSGSSA
1982-07-0915:59 UTCm7201987.25  1OUSGSSA
1982-09-1015:04 UTCm62610 67.90NGVD291OUSGSSA
1982-09-1015:04 UTCm62611 66.79NAVD881OUSGSSA
1982-09-1015:04 UTCm7201988.10  1OUSGSSA
1982-12-1418:57 UTCm62610 67.69NGVD291OUSGSSA
1982-12-1418:57 UTCm62611 66.58NAVD881OUSGSSA
1982-12-1418:57 UTCm7201988.31  1OUSGSSA
1983-04-1215:55 UTCm62610 68.42NGVD291OUSGSSA
1983-04-1215:55 UTCm62611 67.31NAVD881OUSGSSA
1983-04-1215:55 UTCm7201987.58  1OUSGSSA
1983-07-0516:21 UTCm62610 69.62NGVD291OUSGSSA
1983-07-0516:21 UTCm62611 68.51NAVD881OUSGSSA
1983-07-0516:21 UTCm7201986.38  1OUSGSSA
1983-08-24 D62610 71.99NGVD291OUSGSSA
1983-08-24 D62611 70.88NAVD881OUSGSSA
1983-08-24 D7201984.01  1OUSGSSA
1984-05-0118:14 UTCm62610 69.85NGVD291OUSGSSA
1984-05-0118:14 UTCm62611 68.74NAVD881OUSGSSA
1984-05-0118:14 UTCm7201986.15  1OUSGSSA
1987-09-2113:50 UTCm62610 67.38NGVD291OUSGSSA
1987-09-2113:50 UTCm62611 66.27NAVD881OUSGSSA
1987-09-2113:50 UTCm7201988.62  1OUSGSSA
1990-03-2715:15 UTCm62610 69.66NGVD291OUSGSSA
1990-03-2715:15 UTCm62611 68.55NAVD881OUSGSSA
1990-03-2715:15 UTCm7201986.34  1OUSGSSA
1991-03-2018:25 UTCm62610 71.70NGVD291OUSGSSA
1991-03-2018:25 UTCm62611 70.59NAVD881OUSGSSA
1991-03-2018:25 UTCm7201984.30  1OUSGSSA
1992-03-1820:09 UTCm62610 70.41NGVD291OUSGSSA
1992-03-1820:09 UTCm62611 69.30NAVD881OUSGSSA
1992-03-1820:09 UTCm7201985.59  1OUSGSSA
1992-04-2419:15 UTCm62610 70.23NGVD291OUSGSSA
1992-04-2419:15 UTCm62611 69.12NAVD881OUSGSSA
1992-04-2419:15 UTCm7201985.77  1OUSGSSA
1992-05-1917:28 UTCm62610 69.64NGVD291OUSGSSA
1992-05-1917:28 UTCm62611 68.53NAVD881OUSGSSA
1992-05-1917:28 UTCm7201986.36  1OUSGSSA
1992-06-0319:29 UTCm62610 69.63NGVD291OUSGSSA
1992-06-0319:29 UTCm62611 68.52NAVD881OUSGSSA
1992-06-0319:29 UTCm7201986.37  1OUSGSSA
1992-06-1618:27 UTCm62610 69.18NGVD291OUSGSSA
1992-06-1618:27 UTCm62611 68.07NAVD881OUSGSSA
1992-06-1618:27 UTCm7201986.82  1OUSGSSA
1992-07-1514:41 UTCm62610 68.78NGVD291OUSGSSA
1992-07-1514:41 UTCm62611 67.67NAVD881OUSGSSA
1992-07-1514:41 UTCm7201987.22  1OUSGSSA
1992-08-2114:21 UTCm62610 68.29NGVD291OUSGSSA
1992-08-2114:21 UTCm62611 67.18NAVD881OUSGSSA
1992-08-2114:21 UTCm7201987.71  1OUSGSSA
1992-09-3017:01 UTCm62610 67.97NGVD291OUSGSSA
1992-09-3017:01 UTCm62611 66.86NAVD881OUSGSSA
1992-09-3017:01 UTCm7201988.03  1OUSGSSA
1992-10-2019:48 UTCm62610 67.98NGVD291OUSGSSA
1992-10-2019:48 UTCm62611 66.87NAVD881OUSGSSA
1992-10-2019:48 UTCm7201988.02  1OUSGSSA
1992-11-1918:42 UTCm62610 67.84NGVD291OUSGSSA
1992-11-1918:42 UTCm62611 66.73NAVD881OUSGSSA
1992-11-1918:42 UTCm7201988.16  1OUSGSSA
1992-12-0318:35 UTCm62610 67.79NGVD291OUSGSSA
1992-12-0318:35 UTCm62611 66.68NAVD881OUSGSSA
1992-12-0318:35 UTCm7201988.21  1OUSGSSA
1993-01-0421:37 UTCm62610 67.92NGVD291OUSGSSA
1993-01-0421:37 UTCm62611 66.81NAVD881OUSGSSA
1993-01-0421:37 UTCm7201988.08  1OUSGSSA
1993-01-2614:12 UTCm62610 67.73NGVD291OUSGSSA
1993-01-2614:12 UTCm62611 66.62NAVD881OUSGSSA
1993-01-2614:12 UTCm7201988.27  1OUSGSSA
1993-02-2318:18 UTCm62610 67.91NGVD291OUSGSSA
1993-02-2318:18 UTCm62611 66.80NAVD881OUSGSSA
1993-02-2318:18 UTCm7201988.09  1OUSGSSA
1993-03-2519:55 UTCm62610 66.95NGVD291OUSGSSA
1993-03-2519:55 UTCm62611 65.84NAVD881OUSGSSA
1993-03-2519:55 UTCm7201989.05  1OUSGSSA
1993-04-2118:05 UTCm62610 68.22NGVD291OUSGSSA
1993-04-2118:05 UTCm62611 67.11NAVD881OUSGSSA
1993-04-2118:05 UTCm7201987.78  1OUSGSSA
1993-05-1719:35 UTCm62610 68.37NGVD291OUSGSSA
1993-05-1719:35 UTCm62611 67.26NAVD881OUSGSSA
1993-05-1719:35 UTCm7201987.63  1OUSGSSA
1993-06-1716:21 UTCm62610 68.33NGVD291OUSGSSA
1993-06-1716:21 UTCm62611 67.22NAVD881OUSGSSA
1993-06-1716:21 UTCm7201987.67  1OUSGSSA
1993-06-2218:16 UTCm62610 68.62NGVD291OUSGSSA
1993-06-2218:16 UTCm62611 67.51NAVD881OUSGSSA
1993-06-2218:16 UTCm7201987.38  1OUSGSSA
1993-07-1919:21 UTCm62610 67.81NGVD291OUSGSSA
1993-07-1919:21 UTCm62611 66.70NAVD881OUSGSSA
1993-07-1919:21 UTCm7201988.19  1OUSGSSA
1993-08-1820:10 UTCm62610 67.64NGVD291OUSGSSA
1993-08-1820:10 UTCm62611 66.53NAVD881OUSGSSA
1993-08-1820:10 UTCm7201988.36  1OUSGSSA
1993-09-2413:38 UTCm62610 67.03NGVD291OUSGSSA
1993-09-2413:38 UTCm62611 65.92NAVD881OUSGSSA
1993-09-2413:38 UTCm7201988.97  1OUSGSSA
1993-10-2520:12 UTCm62610 67.10NGVD291OUSGSSA
1993-10-2520:12 UTCm62611 65.99NAVD881OUSGSSA
1993-10-2520:12 UTCm7201988.90  1OUSGSSA
1993-11-2220:20 UTCm62610 67.09NGVD291OUSGSSA
1993-11-2220:20 UTCm62611 65.98NAVD881OUSGSSA
1993-11-2220:20 UTCm7201988.91  1OUSGSSA
1993-12-2021:01 UTCm62610 66.92NGVD291OUSGSSA
1993-12-2021:01 UTCm62611 65.81NAVD881OUSGSSA
1993-12-2021:01 UTCm7201989.08  1OUSGSSA
1993-12-2820:26 UTCm62610 67.02NGVD291OUSGSSA
1993-12-2820:26 UTCm62611 65.91NAVD881OUSGSSA
1993-12-2820:26 UTCm7201988.98  1OUSGSSA
1994-02-2520:05 UTCm62610 66.94NGVD291OUSGSSA
1994-02-2520:05 UTCm62611 65.83NAVD881OUSGSSA
1994-02-2520:05 UTCm7201989.06  1OUSGSSA
1994-03-3017:45 UTCm62610 66.90NGVD291OUSGSSA
1994-03-3017:45 UTCm62611 65.79NAVD881OUSGSSA
1994-03-3017:45 UTCm7201989.10  1OUSGSSA
1994-04-1915:56 UTCm62610 67.29NGVD291OUSGSSA
1994-04-1915:56 UTCm62611 66.18NAVD881OUSGSSA
1994-04-1915:56 UTCm7201988.71  1OUSGSSA
1994-05-1917:21 UTCm62610 67.15NGVD291OUSGSSA
1994-05-1917:21 UTCm62611 66.04NAVD881OUSGSSA
1994-05-1917:21 UTCm7201988.85  1OUSGSSA
1994-06-0720:46 UTCm62610 67.66NGVD291OUSGSSA
1994-06-0720:46 UTCm62611 66.55NAVD881OUSGSSA
1994-06-0720:46 UTCm7201988.34  1OUSGSSA
1994-06-2016:34 UTCm62610 66.96NGVD291OUSGSSA
1994-06-2016:34 UTCm62611 65.85NAVD881OUSGSSA
1994-06-2016:34 UTCm7201989.04  1OUSGSSA
1994-07-2021:15 UTCm62610 66.97NGVD291OUSGSSA
1994-07-2021:15 UTCm62611 65.86NAVD881OUSGSSA
1994-07-2021:15 UTCm7201989.03  1OUSGSSA
1994-08-2420:00 UTCm62610 67.66NGVD291OUSGSSA
1994-08-2420:00 UTCm62611 66.55NAVD881OUSGSSA
1994-08-2420:00 UTCm7201988.34  1OUSGSSA
1994-09-2020:27 UTCm62610 66.47NGVD291OUSGSSA
1994-09-2020:27 UTCm62611 65.36NAVD881OUSGSSA
1994-09-2020:27 UTCm7201989.53  1OUSGSSA
1994-10-1816:48 UTCm62610 66.15NGVD291OUSGSSA
1994-10-1816:48 UTCm62611 65.04NAVD881OUSGSSA
1994-10-1816:48 UTCm7201989.85  1OUSGSSA
1994-12-1320:35 UTCm62610 66.36NGVD291OUSGSSA
1994-12-1320:35 UTCm62611 65.25NAVD881OUSGSSA
1994-12-1320:35 UTCm7201989.64  1OUSGSSA
1994-12-1416:52 UTCm62610 66.38NGVD291OUSGSSA
1994-12-1416:52 UTCm62611 65.27NAVD881OUSGSSA
1994-12-1416:52 UTCm7201989.62  1OUSGSSA
1995-01-1818:00 UTCm62610 66.48NGVD291OUSGSSA
1995-01-1818:00 UTCm62611 65.37NAVD881OUSGSSA
1995-01-1818:00 UTCm7201989.52  1OUSGSSA
1995-03-1415:05 UTCm62610 65.84NGVD291OUSGSSA
1995-03-1415:05 UTCm62611 64.73NAVD881OUSGSSA
1995-03-1415:05 UTCm7201990.16  1OUSGSSA
1995-05-2214:30 UTCm62610 65.48NGVD291OUSGSSA
1995-05-2214:30 UTCm62611 64.37NAVD881OUSGSSA
1995-05-2214:30 UTCm7201990.52  1OUSGSSA
1995-06-1317:05 UTCm62610 65.32NGVD291OUSGSSA
1995-06-1317:05 UTCm62611 64.21NAVD881OUSGSSA
1995-06-1317:05 UTCm7201990.68  1OUSGSSA
1995-07-2810:44 UTCm62610 64.65NGVD291OUSGSSA
1995-07-2810:44 UTCm62611 63.54NAVD881OUSGSSA
1995-07-2810:44 UTCm7201991.35  1OUSGSSA
1995-09-2014:46 UTCm62610 63.83NGVD291OUSGSSA
1995-09-2014:46 UTCm62611 62.72NAVD881OUSGSSA
1995-09-2014:46 UTCm7201992.17  1OUSGSSA
1995-12-0517:30 UTCm62610 63.36NGVD291OUSGSSA
1995-12-0517:30 UTCm62611 62.25NAVD881OUSGSSA
1995-12-0517:30 UTCm7201992.64  1OUSGSSA
1995-12-0818:40 UTCm62610 63.20NGVD291OUSGSSA
1995-12-0818:40 UTCm62611 62.09NAVD881OUSGSSA
1995-12-0818:40 UTCm7201992.80  1OUSGSSA
1996-01-2615:41 UTCm62610 63.19NGVD291OUSGSSA
1996-01-2615:41 UTCm62611 62.08NAVD881OUSGSSA
1996-01-2615:41 UTCm7201992.81  1OUSGSSA
1996-03-2213:15 UTCm62610 63.17NGVD291OUSGSSA
1996-03-2213:15 UTCm62611 62.06NAVD881OUSGSSA
1996-03-2213:15 UTCm7201992.83  1OUSGSSA
1996-05-1513:50 UTCm62610 63.53NGVD291OUSGSSA
1996-05-1513:50 UTCm62611 62.42NAVD881OUSGSSA
1996-05-1513:50 UTCm7201992.47  1OUSGSSA
1996-06-2818:12 UTCm62610 63.76NGVD291OUSGSSA
1996-06-2818:12 UTCm62611 62.65NAVD881OUSGSSA
1996-06-2818:12 UTCm7201992.24  1OUSGSSA
1996-09-1013:35 UTCm62610 63.74NGVD291OUSGSSA
1996-09-1013:35 UTCm62611 62.63NAVD881OUSGSSA
1996-09-1013:35 UTCm7201992.26  1OUSGSSA
1996-09-3019:20 UTCm62610 63.82NGVD291OUSGSSA
1996-09-3019:20 UTCm62611 62.71NAVD881OUSGSSA
1996-09-3019:20 UTCm7201992.18  1OUSGSSA
1996-12-1216:07 UTCm62610 64.26NGVD291OUSGSSA
1996-12-1216:07 UTCm62611 63.15NAVD881OUSGSSA
1996-12-1216:07 UTCm7201991.74  1OUSGSSA
1997-05-2213:16 UTCm62610 66.40NGVD291OUSGSSA
1997-05-2213:16 UTCm62611 65.29NAVD881OUSGSSA
1997-05-2213:16 UTCm7201989.60  1OUSGSSA
1997-07-2220:03 UTCm62610 66.40NGVD291OUSGSSA
1997-07-2220:03 UTCm62611 65.29NAVD881OUSGSSA
1997-07-2220:03 UTCm7201989.60  1OUSGSSA
1997-08-2016:24 UTCm62610 66.27NGVD291OUSGSSA
1997-08-2016:24 UTCm62611 65.16NAVD881OUSGSSA
1997-08-2016:24 UTCm7201989.73  1OUSGSSA
1997-09-1617:53 UTCm62610 66.14NGVD291OUSGSSA
1997-09-1617:53 UTCm62611 65.03NAVD881OUSGSSA
1997-09-1617:53 UTCm7201989.86  1OUSGSSA
1998-03-2414:30 UTCm62610 66.06NGVD291SUSGSSA
1998-03-2414:30 UTCm62611 64.95NAVD881SUSGSSA
1998-03-2414:30 UTCm7201989.94  1SUSGSSA

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.
Measuring agencyUSGSU.S. Geological Survey
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.