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Groundwater levels for the Nation

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USGS 421052088184101 43N8E-28.6g

Mchenry County, Illinois
Latitude  42°10'52.0", Longitude  88°18'41.3" NAD83
Land-surface elevation 800 feet above NGVD29
The depth of the well is 38.9 feet below land surface.
The depth of the hole is 39.4 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
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
2000-05-23 D62610 784.40NGVD291TUSGSSA
2000-05-23 D62611 784.23NAVD881TUSGSSA
2000-05-23 D7201915.60  1TUSGSSA
2005-06-20 D62610 799.35NGVD291TUSGSSA
2005-06-20 D62611 799.18NAVD881TUSGSSA
2005-06-20 D720190.65  1TUSGSSA
2006-05-25 D62610 799.50NGVD291TUSGSSA
2006-05-25 D62611 799.33NAVD881TUSGSSA
2006-05-25 D720190.50  1TUSGSSA
2007-07-1217:05 UTCm62610 799.43NGVD291TUSGSSA
2007-07-1217:05 UTCm62611 799.26NAVD881TUSGSSA
2007-07-1217:05 UTCm720190.57  1TUSGSSA
2008-08-20 D62610 799.60NGVD291TUSGSSA
2008-08-20 D62611 799.43NAVD881TUSGSSA
2008-08-20 D720190.40  1TUSGSSA
2009-07-2720:00 UTCm62610 799.60NGVD291TUSGSSA
2009-07-2720:00 UTCm62611 799.43NAVD881TUSGSSA
2009-07-2720:00 UTCm720190.40  1TUSGSSA
2011-05-0420:40 UTCm62610 799.60NGVD291VUSGSSA
2011-05-0420:40 UTCm62611 799.43NAVD881VUSGSSA
2011-05-0420:40 UTCm720190.40  1VUSGSSA
2012-05-2219:00 UTCm62610 799.60NGVD291VUSGSSA
2012-05-2219:00 UTCm62611 799.43NAVD881VUSGSSA
2012-05-2219:00 UTCm720190.40  1VUSGSSA
2015-05-1119:15 UTCm62610 799.70NGVD291VUSGSSA
2015-05-1119:15 UTCm62611 799.53NAVD881VUSGSSA
2015-05-1119:15 UTCm720190.30  1VUSGSSA
2016-05-0523:15 UTCm62610 799.55NGVD291VUSGSSA
2016-05-0523:15 UTCm62611 799.38NAVD881VUSGSSA
2016-05-0523:15 UTCm720190.45  1VUSGSSA
2017-04-2416:10 UTCm62610 799.60NGVD291VUSGSSA
2017-04-2416:10 UTCm62611 799.43NAVD881VUSGSSA
2017-04-2416:10 UTCm720190.40  1VUSGSSA
2019-07-0917:30 UTCm62610 799.49NGVD291VUSGSSA
2019-07-0917:30 UTCm62611 799.32NAVD881VUSGSSA
2019-07-0917:30 UTCm720190.51  1VUSGSSA
2021-03-1215:15 UTCm62610 799.60NGVD291VUSGSSA
2021-03-1215:15 UTCm62611 799.43NAVD881VUSGSSA
2021-03-1215:15 UTCm720190.40  1VUSGSSA
2021-05-0416:26 UTCm62610 799.60NGVD291VUSGSSA
2021-05-0416:26 UTCm62611 799.43NAVD881VUSGSSA
2021-05-0416:26 UTCm720190.40  1VUSGSSA
2024-06-1716:07 UTCm62610 799.56NGVD291VUSGSSA
2024-06-1716:07 UTCm62611 799.39NAVD881VUSGSSA
2024-06-1716:07 UTCm720190.44  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
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.