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Groundwater levels for the Nation

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Agency code = usgs
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  • 401811088274801
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USGS 401811088274801 21N 6E-1.2b

Mclean County, Illinois
Latitude  40°18'12.2", Longitude  88°27'48.8" NAD83
Land-surface elevation 753 feet above NGVD29
The depth of the well is 218 feet below land surface.
The depth of the hole is 218 feet below land surface.
This well is completed in the Sand and gravel aquifers (glaciated regions) (N100GLCIAL) national aquifer.
This well is completed in the Quaternary System (110QRNR) local aquifer.
Output formats
Table of data
Tab-separated data
Graph of data
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
1991-12-27 D62610 717.00NGVD291L  A
1991-12-27 D62611 716.85NAVD881L  A
1991-12-27 D7201936.00  1L  A
2005-05-02 D62610 673.75NGVD291TUSGSSA
2005-05-02 D62611 673.60NAVD881TUSGSSA
2005-05-02 D7201979.25  1TUSGSSA
2006-05-05 D62610 672.21NGVD29 TUSGSSA
2006-05-05 D62611 672.06NAVD88 TUSGSSA
2006-05-05 D7201980.79   TUSGSSA
2007-05-24 D62610 672.02NGVD291TUSGSSA
2007-05-24 D62611 671.87NAVD881TUSGSSA
2007-05-24 D7201980.98  1TUSGSSA
2008-07-21 D62610 672.10NGVD291TUSGSSA
2008-07-21 D62611 671.95NAVD881TUSGSSA
2008-07-21 D7201980.90  1TUSGSSA
2009-05-11 D62610 673.30NGVD291TUSGSSA
2009-05-11 D62611 673.15NAVD881TUSGSSA
2009-05-11 D7201979.70  1TUSGSSA
2010-05-0716:47 UTCm62610 673.25NGVD291VUSGSSA
2010-05-0716:47 UTCm62611 673.10NAVD881VUSGSSA
2010-05-0716:47 UTCm7201979.75  1VUSGSSA
2011-05-1214:20 UTCm62610 671.35NGVD291VUSGSSA
2011-05-1214:20 UTCm62611 671.20NAVD881VUSGSSA
2011-05-1214:20 UTCm7201981.65  1VUSGSSA
2012-04-1819:30 UTCm62610 669.50NGVD291VUSGSSA
2012-04-1819:30 UTCm62611 669.35NAVD881VUSGSSA
2012-04-1819:30 UTCm7201983.50  1VUSGSSA
2013-05-0815:10 UTCm62610 670.35NGVD291VUSGSSA
2013-05-0815:10 UTCm62611 670.20NAVD881VUSGSSA
2013-05-0815:10 UTCm7201982.65  1VUSGSSA
2015-04-2815:40 UTCm62610 671.35NGVD291VUSGSSA
2015-04-2815:40 UTCm62611 671.20NAVD881VUSGSSA
2015-04-2815:40 UTCm7201981.65  1VUSGSSA
2017-05-0115:30 UTCm62610 674.11NGVD291VUSGSSA
2017-05-0115:30 UTCm62611 673.96NAVD881VUSGSSA
2017-05-0115:30 UTCm7201978.89  1VUSGSSA
2018-05-0818:47 UTCm62610 670.84NGVD291VUSGSSA
2018-05-0818:47 UTCm62611 670.69NAVD881VUSGSSA
2018-05-0818:47 UTCm7201982.16  1VUSGSSA
2022-04-1115:52 UTCm62610 671.87NGVD291VUSGSSA
2022-04-1115:52 UTCm62611 671.72NAVD881VUSGSSA
2022-04-1115:52 UTCm7201981.13  1VUSGSSA
2024-06-2420:36 UTCm62610 670.31NGVD291VUSGSSA
2024-06-2420:36 UTCm62611 670.16NAVD881VUSGSSA
2024-06-2420:36 UTCm7201982.69  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
StatusThe reported water-level measurement represents a static level
Status1Static
Method of measurementLInterpreted from geophysical logs.
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.