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Groundwater levels for the Nation

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  • 421404088201501
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USGS 421404088201501 43N 8E- 6.1e1

Mchenry County, Illinois
Latitude  42°14'04", Longitude  88°20'15" NAD27
Land-surface elevation 900 feet above NGVD29
The depth of the well is 45 feet below land surface.
The depth of the hole is 48 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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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
1948-07-23 D62610 882.20NGVD291O  A
1948-07-23 D62611 882.06NAVD881O  A
1948-07-23 D7201917.80  1O  A
1955-07 M62610 868.00NGVD291O  A
1955-07 M62611 867.86NAVD881O  A
1955-07 M7201932.00  1O  A
1985-08-1419:55 UTCm62610 895.40NGVD291OIL006AA
1985-08-1419:55 UTCm62611 895.26NAVD881OIL006AA
1985-08-1419:55 UTCm720194.60  1OIL006AA

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
Water-level date-time accuracyMDate is accurate to the Month
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 agencyIL006State of Illinois Environmental Protection Agency
Source of measurementNot determined
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.