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Groundwater levels for the Nation

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  • 381559076400201
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USGS 381559076400201 SM Dc 64

St. Mary'S County, Maryland
Latitude  38°16'00.0", Longitude  76°40'00.0" NAD83
Land-surface elevation 33 feet above NGVD29
The depth of the well is 902 feet below land surface.
The depth of the hole is 940 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 Upper Patapsco Aquifer In the Patapsco Formation (217PPSCU) 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
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Measuring
agency
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Source of
measurement
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Water-level
approval
status
2008-05-0117:15 UTCm62610 -54.60NGVD291SMD006AA
2008-05-0117:15 UTCm62611 -55.48NAVD881SMD006AA
2008-05-0117:15 UTCm7201987.60  1SMD006AA
2008-09-2416:30 UTCm62610 -57.83NGVD291SMD006AA
2008-09-2416:30 UTCm62611 -58.71NAVD881SMD006AA
2008-09-2416:30 UTCm7201990.83  1SMD006AA
2009-04-3017:40 UTCm62610 -57.08NGVD291SMD006AA
2009-04-3017:40 UTCm62611 -57.96NAVD881SMD006AA
2009-04-3017:40 UTCm7201990.08  1SMD006AA
2009-09-2119:25 UTCm62610 -58.76NGVD291SMD006AA
2009-09-2119:25 UTCm62611 -59.64NAVD881SMD006AA
2009-09-2119:25 UTCm7201991.76  1SMD006AA
2010-04-2715:48 UTCm62610 -57.86NGVD291SMD006AA
2010-04-2715:48 UTCm62611 -58.74NAVD881SMD006AA
2010-04-2715:48 UTCm7201990.86  1SMD006AA
2010-10-0716:15 UTCm62610 -60.75NGVD291SMD006AA
2010-10-0716:15 UTCm62611 -61.63NAVD881SMD006AA
2010-10-0716:15 UTCm7201993.75  1SMD006AA
2011-05-1116:35 UTCm62610 -59.74NGVD291SMD006AA
2011-05-1116:35 UTCm62611 -60.62NAVD881SMD006AA
2011-05-1116:35 UTCm7201992.74  1SMD006AA
2011-09-2714:59 UTCm62610 -62.01NGVD291TMD006AA
2011-09-2714:59 UTCm62611 -62.89NAVD881TMD006AA
2011-09-2714:59 UTCm7201995.01  1TMD006AA
2012-04-1616:20 UTCm62610 -62.62NGVD291SMD006AA
2012-04-1616:20 UTCm62611 -63.50NAVD881SMD006AA
2012-04-1616:20 UTCm7201995.62  1SMD006AA
2012-09-2415:42 UTCm62610 -64.95NGVD291SMD006AA
2012-09-2415:42 UTCm62611 -65.83NAVD881SMD006AA
2012-09-2415:42 UTCm7201997.95  1SMD006AA
2013-04-1115:19 UTCm62610 -62.84NGVD291SMD006AA
2013-04-1115:19 UTCm62611 -63.72NAVD881SMD006AA
2013-04-1115:19 UTCm7201995.84  1SMD006AA
2013-09-1216:35 UTCm62610 -64.33NGVD291SMD006AA
2013-09-1216:35 UTCm62611 -65.21NAVD881SMD006AA
2013-09-1216:35 UTCm7201997.33  1SMD006AA
2014-04-2916:09 UTCm62610 -63.35NGVD291SMD006AA
2014-04-2916:09 UTCm62611 -64.23NAVD881SMD006AA
2014-04-2916:09 UTCm7201996.35  1SMD006AA
2014-09-2515:18 UTCm62610 -64.75NGVD291TMD006AA
2014-09-2515:18 UTCm62611 -65.63NAVD881TMD006AA
2014-09-2515:18 UTCm7201997.75  1TMD006AA
2015-04-2216:09 UTCm62610 -64.50NGVD291TMD006AA
2015-04-2216:09 UTCm62611 -65.38NAVD881TMD006AA
2015-04-2216:09 UTCm7201997.50  1TMD006AA
2015-09-1715:52 UTCm62610 -66.01NGVD291TMD006AA
2015-09-1715:52 UTCm62611 -66.89NAVD881TMD006AA
2015-09-1715:52 UTCm7201999.01  1TMD006AA
2016-04-2716:40 UTCm62610 -65.00NGVD291TMD006AA
2016-04-2716:40 UTCm62611 -65.88NAVD881TMD006AA
2016-04-2716:40 UTCm7201998.00  1TMD006AA
2016-09-1515:01 UTCm62610 -67.52NGVD291TMD006AA
2016-09-1515:01 UTCm62611 -68.40NAVD881TMD006AA
2016-09-1515:01 UTCm72019100.52  1TMD006AA
2017-04-2715:59 UTCm62610 -66.15NGVD291TMD006AA
2017-04-2715:59 UTCm62611 -67.03NAVD881TMD006AA
2017-04-2715:59 UTCm7201999.15  1TMD006AA
2017-09-2614:51 UTCm62610 -67.29NGVD291TMD006AA
2017-09-2614:51 UTCm62611 -68.17NAVD881TMD006AA
2017-09-2614:51 UTCm72019100.29  1TMD006AA
2018-04-2616:12 UTCm62610 -66.04NGVD291TMD006AA
2018-04-2616:12 UTCm62611 -66.92NAVD881TMD006AA
2018-04-2616:12 UTCm7201999.04  1TMD006AA
2018-10-0317:01 UTCm62610 -67.99NGVD291TMD006AA
2018-10-0317:01 UTCm62611 -68.87NAVD881TMD006AA
2018-10-0317:01 UTCm72019100.99  1TMD006AA
2019-04-2314:48 UTCm62610 -66.52NGVD291VMD006AA
2019-04-2314:48 UTCm62611 -67.40NAVD881VMD006AA
2019-04-2314:48 UTCm7201999.52  1VMD006AA
2019-09-2515:26 UTCm62610 -69.33NGVD291VMD006AA
2019-09-2515:26 UTCm62611 -70.21NAVD881VMD006AA
2019-09-2515:26 UTCm72019102.33  1VMD006AA
2020-05-2714:40 UTCm62610 -67.92NGVD291VMD006AA
2020-05-2714:40 UTCm62611 -68.80NAVD881VMD006AA
2020-05-2714:40 UTCm72019100.92  1VMD006AA
2020-09-1714:53 UTCm62610 -68.86NGVD291VMD006AA
2020-09-1714:53 UTCm62611 -69.74NAVD881VMD006AA
2020-09-1714:53 UTCm72019101.86  1VMD006AA
2021-04-2614:46 UTCm62610 -67.61NGVD291VMD006AA
2021-04-2614:46 UTCm62611 -68.49NAVD881VMD006AA
2021-04-2614:46 UTCm72019100.61  1VMD006AA
2021-09-1415:08 UTCm62610 -69.82NGVD291VMD006AA
2021-09-1415:08 UTCm62611 -70.70NAVD881VMD006AA
2021-09-1415:08 UTCm72019102.82  1VMD006AA
2022-04-2715:32 UTCm62610 -69.33NGVD291VMD006AA
2022-04-2715:32 UTCm62611 -70.21NAVD881VMD006AA
2022-04-2715:32 UTCm72019102.33  1VMD006AA
2022-09-2014:53 UTCm62610 -70.86NGVD291VMD006AA
2022-09-2014:53 UTCm62611 -71.74NAVD881VMD006AA
2022-09-2014:53 UTCm72019103.86  1VMD006AA
2023-04-1214:10 UTCm62610 -70.15NGVD291VMD006AA
2023-04-1214:10 UTCm62611 -71.03NAVD881VMD006AA
2023-04-1214:10 UTCm72019103.15  1VMD006AA
2023-09-1214:13 UTCm62610 -72.10NGVD291VMD006AA
2023-09-1214:13 UTCm62611 -72.98NAVD881VMD006AA
2023-09-1214:13 UTCm72019105.10  1VMD006AA
2024-04-1713:55 UTCm62610 -70.61NGVD291VMD006AA
2024-04-1713:55 UTCm62611 -71.49NAVD881VMD006AA
2024-04-1713:55 UTCm72019103.61  1VMD006AA
2024-09-2514:15 UTCm62610 -72.97NGVD291VMD006AP
2024-09-2514:15 UTCm62611 -73.85NAVD881VMD006AP
2024-09-2514:15 UTCm72019105.97  1VMD006AP

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 measurementSSteel-tape measurement.
Method of measurementTElectric-tape measurement.
Method of measurementVCalibrated electric-tape measurement.
Measuring agencyMD006Maryland Geological Survey
Source of measurementAReported by another government agency (do not use "A" if reported by owner, use "O").
Water-level approval statusAApproved for publication -- Processing and review completed.
Water-level approval statusPProvisional data subject to revision.