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Groundwater levels for the Nation

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Agency code = usgs
site_no list =
  • 421850088252301
Minimum number of levels = 1
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USGS 421850088252301 44N7E-9.4H

Mchenry County, Illinois
Latitude  42°18'45.6", Longitude  88°25'26.0" NAD83
Land-surface elevation 895 feet above NGVD29
The depth of the well is 175 feet below land surface.
The depth of the hole is 175 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
1992-04-02 D62610 863.00NGVD29PL  A
1992-04-02 D62611 862.86NAVD88PL  A
1992-04-02 D7201932.00  PL  A
2001-04-0919:00 UTCm62610 863.00NGVD291OUSGSSA
2001-04-0919:00 UTCm62611 862.86NAVD881OUSGSSA
2001-04-0919:00 UTCm7201932.00  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
StatusPPumping
Method of measurementLInterpreted from geophysical logs.
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.