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Groundwater levels for the Nation

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Agency code = usgs
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  • 421425088301301
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USGS 421425088301301 44N 6E-31.8a

Mchenry County, Illinois
Latitude  42°14'25", Longitude  88°30'13" NAD27
Land-surface elevation 830 feet above NGVD29
The depth of the well is 149 feet below land surface.
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
1979-04-30 D62610 824.25NGVD291S  A
1979-04-30 D62611 824.09NAVD881S  A
1979-04-30 D720195.75  1S  A
1980-01-15 D62610 815.20NGVD291S  A
1980-01-15 D62611 815.04NAVD881S  A
1980-01-15 D7201914.80  1S  A
1980-02-28 D62610 814.79NGVD291S  A
1980-02-28 D62611 814.63NAVD881S  A
1980-02-28 D7201915.21  1S  A
1980-04-22 D62610 815.27NGVD291S  A
1980-04-22 D62611 815.11NAVD881S  A
1980-04-22 D7201914.73  1S  A
1980-06-05 D62610 819.60NGVD291S  A
1980-06-05 D62611 819.44NAVD881S  A
1980-06-05 D7201910.40  1S  A
1980-07-09 D62610 817.69NGVD291S  A
1980-07-09 D62611 817.53NAVD881S  A
1980-07-09 D7201912.31  1S  A
1980-07-31 D62610 816.83NGVD291S  A
1980-07-31 D62611 816.67NAVD881S  A
1980-07-31 D7201913.17  1S  A
1980-09-05 D62610 817.08NGVD291S  A
1980-09-05 D62611 816.92NAVD881S  A
1980-09-05 D7201912.92  1S  A
1980-10-02 D62610 814.53NGVD291S  A
1980-10-02 D62611 814.37NAVD881S  A
1980-10-02 D7201915.47  1S  A
1980-11-01 D62610 815.45NGVD291S  A
1980-11-01 D62611 815.29NAVD881S  A
1980-11-01 D7201914.55  1S  A
1980-12-04 D62610 815.60NGVD291S  A
1980-12-04 D62611 815.44NAVD881S  A
1980-12-04 D7201914.40  1S  A

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