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Groundwater levels for the Nation

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Agency code = usgs
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  • 421427088515401
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USGS 421427088515401 44N 3E-34.2a1

Boone County, Illinois
Latitude  42°14'27", Longitude  88°51'54" NAD27
Land-surface elevation 790 feet above NGVD29
The depth of the well is 1,393 feet below land surface.
The depth of the hole is 1,393 feet below land surface.
This well is completed in the Cambrian-Ordovician aquifer system (S300CAMORD) national aquifer.
This well is completed in the Ordovician-Cambrian Systems (367OVCB) 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
1964-07-20 D62610 743.00NGVD291O  A
1964-07-20 D62611 742.77NAVD881O  A
1964-07-20 D7201947.00  1O  A
1966-05-29 D62610 650.00NGVD291O  A
1966-05-29 D62611 649.77NAVD881O  A
1966-05-29 D72019140.00  1O  A
1986-04-0117:05 UTCm62610 552.00NGVD291OIL006AA
1986-04-0117:05 UTCm62611 551.77NAVD881OIL006AA
1986-04-0117:05 UTCm72019238.00  1OIL006AA
2007 Y62610 610.00NGVD291O  A
2007 Y62611 609.77NAVD881O  A
2007 Y72019180.00  1O  A
2007-10-1018:00 UTCm62610 610.00NGVD291OUSGSSA
2007-10-1018:00 UTCm62611 609.77NAVD881OUSGSSA
2007-10-1018:00 UTCm72019180.00  1OUSGSSA
2008-06-27 D62610 606.00NGVD291A  A
2008-06-27 D62611 605.77NAVD881A  A
2008-06-27 D72019184.00  1A  A
2009-06-30 D62610 602.00NGVD291A  A
2009-06-30 D62611 601.77NAVD881A  A
2009-06-30 D72019188.00  1A  A
2012-08-29 D62610 628.00NGVD291AUSGSSA
2012-08-29 D62611 627.77NAVD881AUSGSSA
2012-08-29 D72019162.00  1AUSGSSA
2017-08-1016:00 UTCm62610 558.00NGVD291AUSGSSA
2017-08-1016:00 UTCm62611 557.77NAVD881AUSGSSA
2017-08-1016:00 UTCm72019232.00  1AUSGSSA
2019-09-27 D62610 565.00NGVD291A  A
2019-09-27 D62611 564.77NAVD881A  A
2019-09-27 D72019225.00  1A  A
2020-06-29 D62610 562.00NGVD291A  A
2020-06-29 D62611 561.77NAVD881A  A
2020-06-29 D72019228.00  1A  A
2021-09-1018:00 UTCm62610 580.00NGVD291AUSGSSP
2021-09-1018:00 UTCm62611 579.77NAVD881AUSGSSP
2021-09-1018:00 UTCm72019210.00  1AUSGSSP

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
Water-level date-time accuracyYDate is accurate to the Year
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 measurementAAirline measurement.
Method of measurementOObserved.
Measuring agencyNot determined
Measuring agencyIL006State of Illinois Environmental Protection Agency
Measuring agencyUSGSU.S. Geological Survey
Source of measurementNot determined
Source of measurementAReported by another government agency (do not use "A" if reported by owner, use "O").
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.
Water-level approval statusPProvisional data subject to revision.