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Groundwater levels for the Nation

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Agency code = usgs
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  • 421935088260201
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USGS 421935088260201 44N 7E- 5.1h

Mchenry County, Illinois
Latitude  42°19'35", Longitude  88°26'02" NAD27
Land-surface elevation 883 feet above NGVD29
The depth of the well is 103 feet below land surface.
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
1973-06 M62610 869.00NGVD291L  A
1973-06 M62611 868.84NAVD881L  A
1973-06 M7201914.00  1L  A
1979-05-02 D62610 869.68NGVD291S  A
1979-05-02 D62611 869.52NAVD881S  A
1979-05-02 D7201913.32  1S  A
1980-01-17 D62610 865.17NGVD291S  A
1980-01-17 D62611 865.01NAVD881S  A
1980-01-17 D7201917.83  1S  A
1980-02-28 D62610 863.92NGVD291S  A
1980-02-28 D62611 863.76NAVD881S  A
1980-02-28 D7201919.08  1S  A
1980-04-22 D62610 865.57NGVD291S  A
1980-04-22 D62611 865.41NAVD881S  A
1980-04-22 D7201917.43  1S  A
1980-06-06 D62610 867.87NGVD291S  A
1980-06-06 D62611 867.71NAVD881S  A
1980-06-06 D7201915.13  1S  A
1980-07-10 D62610 867.90NGVD291S  A
1980-07-10 D62611 867.74NAVD881S  A
1980-07-10 D7201915.10  1S  A
1980-08-01 D62610 866.74NGVD291S  A
1980-08-01 D62611 866.58NAVD881S  A
1980-08-01 D7201916.26  1S  A
1980-09-06 D62610 867.04NGVD291S  A
1980-09-06 D62611 866.88NAVD881S  A
1980-09-06 D7201915.96  1S  A
1980-10-12 D62610 865.68NGVD291S  A
1980-10-12 D62611 865.52NAVD881S  A
1980-10-12 D7201917.32  1S  A
1980-11-01 D62610 864.91NGVD291S  A
1980-11-01 D62611 864.75NAVD881S  A
1980-11-01 D7201918.09  1S  A
1980-12-04 D62610 865.70NGVD291S  A
1980-12-04 D62611 865.54NAVD881S  A
1980-12-04 D7201917.30  1S  A

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
Water-level date-time accuracyMDate is accurate to the Month
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 measurementLInterpreted from geophysical logs.
Method of measurementSSteel-tape measurement.
Measuring agencyNot determined
Source of measurementNot determined
Water-level approval statusAApproved for publication -- Processing and review completed.