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Groundwater levels for the Nation

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Agency code = usgs
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  • 415941087584601
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USGS 415941087584601 41N11E-28.1a

Cook County, Illinois
Latitude  41°59'41.0", Longitude  87°58'46.0" NAD83
Land-surface elevation 716 feet above NGVD29
The depth of the well is 16.1 feet below land surface.
The depth of the hole is 16.1 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
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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
2012-04-2322:32 UTCm62610 708.92NGVD291VUSGSSA
2012-04-2322:32 UTCm62611 708.63NAVD881VUSGSSA
2012-04-2322:32 UTCm720197.08  1VUSGSSA
2012-06-0617:59 UTCm62610 709.07NGVD291VUSGSSA
2012-06-0617:59 UTCm62611 708.78NAVD881VUSGSSA
2012-06-0617:59 UTCm720196.93  1VUSGSSA
2012-08-2014:33 UTCm62610 709.08NGVD291VUSGSSA
2012-08-2014:33 UTCm62611 708.79NAVD881VUSGSSA
2012-08-2014:33 UTCm720196.92  1VUSGSSA
2012-11-0720:36 UTCm62610 708.60NGVD291VUSGSSA
2012-11-0720:36 UTCm62611 708.31NAVD881VUSGSSA
2012-11-0720:36 UTCm720197.40  1VUSGSSA
2013-01-3113:30 UTCm62610 708.94NGVD291VUSGSSA
2013-01-3113:30 UTCm62611 708.65NAVD881VUSGSSA
2013-01-3113:30 UTCm720197.06  1VUSGSSA
2013-03-2522:46 UTCm62610 708.77NGVD291VUSGSSA
2013-03-2522:46 UTCm62611 708.48NAVD881VUSGSSA
2013-03-2522:46 UTCm720197.23  1VUSGSSA

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 measurementVCalibrated electric-tape measurement.
Measuring agencyUSGSU.S. Geological Survey
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.