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Groundwater levels for the Nation

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Agency code = usgs
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  • 401215089414501
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USGS 401215089414501 20N 5W- 8.8f2

Mason County, Illinois
Latitude  40°12'15", Longitude  89°41'45" NAD27
Land-surface elevation 575.00 feet above NGVD29
The depth of the well is 222 feet below land surface.
The depth of the hole is 222 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.
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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
1938-04-13 D62610 523.00NGVD291O  A
1938-04-13 D62611 522.69NAVD881O  A
1938-04-13 D7201952.00  1O  A
1984-05-1818:00 UTCm62610 502.00NGVD291OUSGSSA
1984-05-1818:00 UTCm62611 501.69NAVD881OUSGSSA
1984-05-1818:00 UTCm7201973.00  1OUSGSSA
1984-08-2815:10 UTCm62610 501.00NGVD291OUSGSSA
1984-08-2815:10 UTCm62611 500.69NAVD881OUSGSSA
1984-08-2815:10 UTCm7201974.00  1OUSGSSA
1984-11-1420:05 UTCm62610 500.00NGVD291OUSGSSA
1984-11-1420:05 UTCm62611 499.69NAVD881OUSGSSA
1984-11-1420:05 UTCm7201975.00  1OUSGSSA
1985-02-0718:10 UTCm62610 502.00NGVD291OUSGSSA
1985-02-0718:10 UTCm62611 501.69NAVD881OUSGSSA
1985-02-0718:10 UTCm7201973.00  1OUSGSSA

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.
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.