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Groundwater levels for the Nation

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Agency code = usgs
site_no list =
  • 381647076421801
Minimum number of levels = 1
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USGS 381647076421801 SM Dc 65

St. Mary'S County, Maryland
Latitude  38°16'47", Longitude  76°42'18" NAD83
Land-surface elevation 16.4 feet above NGVD29
The depth of the well is 862 feet below land surface.
The depth of the hole is 965 feet below land surface.
This well is completed in the Upper Patapsco Aquifer In the Patapsco Formation (217PPSCU) 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
2016-04-2717:05 UTCm62610 -59.85NGVD291TMD006AA
2016-04-2717:05 UTCm62611 -60.70NAVD881TMD006AA
2016-04-2717:05 UTCm7201976.25  1TMD006AA
2016-09-1515:38 UTCm62610 -61.51NGVD291TMD006AA
2016-09-1515:38 UTCm62611 -62.36NAVD881TMD006AA
2016-09-1515:38 UTCm7201977.91  1TMD006AA
2017-04-2715:44 UTCm62610 -60.89NGVD291TMD006AA
2017-04-2715:44 UTCm62611 -61.74NAVD881TMD006AA
2017-04-2715:44 UTCm7201977.29  1TMD006AA
2017-09-2615:22 UTCm62610 -61.65NGVD291TMD006AA
2017-09-2615:22 UTCm62611 -62.50NAVD881TMD006AA
2017-09-2615:22 UTCm7201978.05  1TMD006AA
2018-04-2615:55 UTCm62610 -60.95NGVD291TMD006AA
2018-04-2615:55 UTCm62611 -61.80NAVD881TMD006AA
2018-04-2615:55 UTCm7201977.35  1TMD006AA
2018-10-0317:22 UTCm62610 -62.11NGVD291TMD006AA
2018-10-0317:22 UTCm62611 -62.96NAVD881TMD006AA
2018-10-0317:22 UTCm7201978.51  1TMD006AA
2019-04-2315:20 UTCm62610 -61.59NGVD291VMD006AA
2019-04-2315:20 UTCm62611 -62.44NAVD881VMD006AA
2019-04-2315:20 UTCm7201977.99  1VMD006AA
2019-09-2515:59 UTCm62610 -63.17NGVD291VMD006AA
2019-09-2515:59 UTCm62611 -64.02NAVD881VMD006AA
2019-09-2515:59 UTCm7201979.57  1VMD006AA
2020-05-2715:08 UTCm62610 -62.73NGVD291VMD006AA
2020-05-2715:08 UTCm62611 -63.58NAVD881VMD006AA
2020-05-2715:08 UTCm7201979.13  1VMD006AA
2020-09-1714:31 UTCm62610 -63.61NGVD291VMD006AA
2020-09-1714:31 UTCm62611 -64.46NAVD881VMD006AA
2020-09-1714:31 UTCm7201980.01  1VMD006AA
2021-04-2615:18 UTCm62610 -62.64NGVD291VMD006AA
2021-04-2615:18 UTCm62611 -63.49NAVD881VMD006AA
2021-04-2615:18 UTCm7201979.04  1VMD006AA
2021-09-1415:39 UTCm62610 -63.85NGVD291VMD006AA
2021-09-1415:39 UTCm62611 -64.70NAVD881VMD006AA
2021-09-1415:39 UTCm7201980.25  1VMD006AA
2022-04-2715:12 UTCm62610 -64.38NGVD291VMD006AA
2022-04-2715:12 UTCm62611 -65.23NAVD881VMD006AA
2022-04-2715:12 UTCm7201980.78  1VMD006AA
2022-09-2015:21 UTCm62610 -65.39NGVD291VMD006AA
2022-09-2015:21 UTCm62611 -66.24NAVD881VMD006AA
2022-09-2015:21 UTCm7201981.79  1VMD006AA
2023-04-1213:45 UTCm62610 -64.73NGVD291VMD006AA
2023-04-1213:45 UTCm62611 -65.58NAVD881VMD006AA
2023-04-1213:45 UTCm7201981.13  1VMD006AA
2023-09-1213:55 UTCm62610 -66.42NGVD291VMD006AA
2023-09-1213:55 UTCm62611 -67.27NAVD881VMD006AA
2023-09-1213:55 UTCm7201982.82  1VMD006AA
2024-04-1713:25 UTCm62610 -65.36NGVD291VMD006AA
2024-04-1713:25 UTCm62611 -66.21NAVD881VMD006AA
2024-04-1713:25 UTCm7201981.76  1VMD006AA
2024-09-2513:53 UTCm62610 -66.99NGVD291VMD006AP
2024-09-2513:53 UTCm62611 -67.84NAVD881VMD006AP
2024-09-2513:53 UTCm7201983.39  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 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.