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Groundwater levels for the Nation

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Agency code = usgs
site_no list =
  • 421309088132101
Minimum number of levels = 1
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USGS 421309088132101 43N9E-7.2d

Mchenry County, Illinois
Latitude  42°13'09.6", Longitude  88°13'21.2" NAD83
Land-surface elevation 870 feet above NGVD29
The depth of the well is 29 feet below land surface.
The depth of the hole is 29.5 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
2000-06-06 D62610 842.61NGVD291TUSGSSA
2000-06-06 D62611 842.35NAVD881TUSGSSA
2000-06-06 D7201927.39  1TUSGSSA
2005-06-21 D62610 841.70NGVD291TUSGSSA
2005-06-21 D62611 841.44NAVD881TUSGSSA
2005-06-21 D7201928.30  1TUSGSSA
2006-05-24 D62610 841.96NGVD29 TUSGSSA
2006-05-24 D62611 841.70NAVD88 TUSGSSA
2006-05-24 D7201928.04   TUSGSSA
2007-07-1122:40 UTCm62610 841.60NGVD291TUSGSSA
2007-07-1122:40 UTCm62611 841.34NAVD881TUSGSSA
2007-07-1122:40 UTCm7201928.40  1TUSGSSA
2008-08-20 D62610 841.60NGVD291TUSGSSA
2008-08-20 D62611 841.34NAVD881TUSGSSA
2008-08-20 D7201928.40  1TUSGSSA
2009-07-2721:00 UTCm62610 841.75NGVD291TUSGSSA
2009-07-2721:00 UTCm62611 841.49NAVD881TUSGSSA
2009-07-2721:00 UTCm7201928.25  1TUSGSSA
2011-05-1619:05 UTCm62610 842.19NGVD291VUSGSSA
2011-05-1619:05 UTCm62611 841.93NAVD881VUSGSSA
2011-05-1619:05 UTCm7201927.81  1VUSGSSA

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
StatusThe reported water-level measurement represents a static level
Status1Static
Method of measurementTElectric-tape measurement.
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.