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Groundwater levels for the Nation

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  • 421321088341101
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USGS 421321088341101 43N6E-07.1g (MARS-09-01)

Mchenry County, Illinois
Latitude  42°13'21.06", Longitude  88°34'11.17" NAD83
Land-surface elevation 924.78 feet above NAVD88
The depth of the well is 190.3 feet below land surface.
The depth of the hole is 214 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.
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Parameter
code
Water
level,
feet
below
land
surface
Water
level,
feet
above
specific
vertical
datum
Referenced
vertical
datum
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Status
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Method of
measurement
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Measuring
agency
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measurement
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Water-level
approval
status
2009-09-1117:56 UTCm62610 854.92NGVD291TIL050AA
2009-09-1117:56 UTCm62611 854.76NAVD881TIL050AA
2009-09-1117:56 UTCm7201973.24  1TIL050AA
2010-01-2215:29 UTCm62610 857.80NGVD291VUSGSSA
2010-01-2215:29 UTCm62611 857.64NAVD881VUSGSSA
2010-01-2215:29 UTCm7201970.36  1VUSGSSA
2010-04-2816:27 UTCm62610 858.18NGVD291VUSGSSA
2010-04-2816:27 UTCm62611 858.02NAVD881VUSGSSA
2010-04-2816:27 UTCm7201969.98  1VUSGSSA
2010-11-0120:03 UTCm62610 853.54NGVD291VUSGSSA
2010-11-0120:03 UTCm62611 853.38NAVD881VUSGSSA
2010-11-0120:03 UTCm7201974.62  1VUSGSSA
2010-11-0123:14 UTCm62610 853.45NGVD291VUSGSSA
2010-11-0123:14 UTCm62611 853.29NAVD881VUSGSSA
2010-11-0123:14 UTCm7201974.71  1VUSGSSA
2011-02-2220:54 UTCm62610 854.50NGVD291VUSGSSA
2011-02-2220:54 UTCm62611 854.34NAVD881VUSGSSA
2011-02-2220:54 UTCm7201973.66  1VUSGSSA
2011-05-2514:58 UTCm62610 857.09NGVD291VUSGSSA
2011-05-2514:58 UTCm62611 856.93NAVD881VUSGSSA
2011-05-2514:58 UTCm7201971.07  1VUSGSSA
2011-08-0318:18 UTCm62610 854.45NGVD291VUSGSSA
2011-08-0318:18 UTCm62611 854.29NAVD881VUSGSSA
2011-08-0318:18 UTCm7201973.71  1VUSGSSA
2011-10-1115:15 UTCm62610 854.48NGVD291VUSGSSA
2011-10-1115:15 UTCm62611 854.32NAVD881VUSGSSA
2011-10-1115:15 UTCm7201973.68  1VUSGSSA
2011-12-1918:25 UTCm62610 857.69NGVD291VUSGSSA
2011-12-1918:25 UTCm62611 857.53NAVD881VUSGSSA
2011-12-1918:25 UTCm7201970.47  1VUSGSSA
2012-03-0614:56 UTCm62610 858.13NGVD291VUSGSSA
2012-03-0614:56 UTCm62611 857.97NAVD881VUSGSSA
2012-03-0614:56 UTCm7201970.03  1VUSGSSA
2012-10-1114:57 UTCm62610 848.57NGVD291VUSGSSA
2012-10-1114:57 UTCm62611 848.41NAVD881VUSGSSA
2012-10-1114:57 UTCm7201979.59  1VUSGSSA
2013-04-1514:07 UTCm62610 854.17NGVD291VUSGSSA
2013-04-1514:07 UTCm62611 854.01NAVD881VUSGSSA
2013-04-1514:07 UTCm7201973.99  1VUSGSSA
2013-10-2418:43 UTCm62610 852.51NGVD291VUSGSSA
2013-10-2418:43 UTCm62611 852.35NAVD881VUSGSSA
2013-10-2418:43 UTCm7201975.65  1VUSGSSA
2014-04-1414:54 UTCm62610 855.49NGVD291VUSGSSA
2014-04-1414:54 UTCm62611 855.33NAVD881VUSGSSA
2014-04-1414:54 UTCm7201972.67  1VUSGSSA
2014-10-0614:00 UTCm62610 854.76NGVD291VUSGSSA
2014-10-0614:00 UTCm62611 854.60NAVD881VUSGSSA
2014-10-0614:00 UTCm7201973.40  1VUSGSSA
2015-04-0612:50 UTCm62610 855.73NGVD291VUSGSSA
2015-04-0612:50 UTCm62611 855.57NAVD881VUSGSSA
2015-04-0612:50 UTCm7201972.43  1VUSGSSA
2015-10-0613:26 UTCm62610 854.77NGVD291VUSGSSA
2015-10-0613:26 UTCm62611 854.61NAVD881VUSGSSA
2015-10-0613:26 UTCm7201973.39  1VUSGSSA
2016-03-2914:20 UTCm62610 858.66NGVD291VUSGSSA
2016-03-2914:20 UTCm62611 858.50NAVD881VUSGSSA
2016-03-2914:20 UTCm7201969.50  1VUSGSSA
2016-11-2916:10 UTCm62610 855.84NGVD291VUSGSSA
2016-11-2916:10 UTCm62611 855.68NAVD881VUSGSSA
2016-11-2916:10 UTCm7201972.32  1VUSGSSA
2017-05-2421:27 UTCm62610 859.15NGVD291VUSGSSA
2017-05-2421:27 UTCm62611 858.99NAVD881VUSGSSA
2017-05-2421:27 UTCm7201969.01  1VUSGSSA
2017-08-3121:10 UTCm62610 857.48NGVD291VUSGSSA
2017-08-3121:10 UTCm62611 857.32NAVD881VUSGSSA
2017-08-3121:10 UTCm7201970.68  1VUSGSSA
2017-11-2018:07 UTCm62610 857.37NGVD291VUSGSSA
2017-11-2018:07 UTCm62611 857.21NAVD881VUSGSSA
2017-11-2018:07 UTCm7201970.79  1VUSGSSA
2018-02-1519:43 UTCm62610 857.78NGVD291VUSGSSA
2018-02-1519:43 UTCm62611 857.62NAVD881VUSGSSA
2018-02-1519:43 UTCm7201970.38  1VUSGSSA
2018-05-2316:54 UTCm62610 858.12NGVD291VUSGSSA
2018-05-2316:54 UTCm62611 857.96NAVD881VUSGSSA
2018-05-2316:54 UTCm7201970.04  1VUSGSSA
2018-08-2917:17 UTCm62610 856.46NGVD291VUSGSSA
2018-08-2917:17 UTCm62611 856.30NAVD881VUSGSSA
2018-08-2917:17 UTCm7201971.70  1VUSGSSA
2018-12-0615:04 UTCm62610 859.26NGVD291VUSGSSA
2018-12-0615:04 UTCm62611 859.10NAVD881VUSGSSA
2018-12-0615:04 UTCm7201968.90  1VUSGSSA
2019-02-0721:08 UTCm62610 859.64NGVD291VUSGSSA
2019-02-0721:08 UTCm62611 859.48NAVD881VUSGSSA
2019-02-0721:08 UTCm7201968.52  1VUSGSSA
2019-06-1114:12 UTCm62610 859.83NGVD291VUSGSSA
2019-06-1114:12 UTCm62611 859.67NAVD881VUSGSSA
2019-06-1114:12 UTCm7201968.33  1VUSGSSA
2019-08-0519:16 UTCm62610 857.87NGVD291VUSGSSA
2019-08-0519:16 UTCm62611 857.71NAVD881VUSGSSA
2019-08-0519:16 UTCm7201970.29  1VUSGSSA
2019-11-1316:37 UTCm62610 858.89NGVD291VUSGSSA
2019-11-1316:37 UTCm62611 858.73NAVD881VUSGSSA
2019-11-1316:37 UTCm7201969.27  1VUSGSSA
2020-02-0519:16 UTCm62610 859.73NGVD291VUSGSSA
2020-02-0519:16 UTCm62611 859.57NAVD881VUSGSSA
2020-02-0519:16 UTCm7201968.43  1VUSGSSA
2020-04-2115:29 UTCm62610 859.46NGVD291VUSGSSA
2020-04-2115:29 UTCm62611 859.30NAVD881VUSGSSA
2020-04-2115:29 UTCm7201968.70  1VUSGSSA
2020-06-1218:52 UTCm62610 859.23NGVD291VUSGSSA
2020-06-1218:52 UTCm62611 859.07NAVD881VUSGSSA
2020-06-1218:52 UTCm7201968.93  1VUSGSSA
2020-07-2915:29 UTCm62610 857.21NGVD291VUSGSSA
2020-07-2915:29 UTCm62611 857.05NAVD881VUSGSSA
2020-07-2915:29 UTCm7201970.95  1VUSGSSA
2020-12-2316:26 UTCm62610 857.31NGVD291VUSGSSA
2020-12-2316:26 UTCm62611 857.15NAVD881VUSGSSA
2020-12-2316:26 UTCm7201970.85  1VUSGSSA
2021-02-0819:29 UTCm62610 857.15NGVD291VUSGSSA
2021-02-0819:29 UTCm62611 856.99NAVD881VUSGSSA
2021-02-0819:29 UTCm7201971.01  1VUSGSSA
2021-05-0717:00 UTCm62610 857.39NGVD291VUSGSSA
2021-05-0717:00 UTCm62611 857.23NAVD881VUSGSSA
2021-05-0717:00 UTCm7201970.77  1VUSGSSA
2021-05-1416:10 UTCm62610 857.06NGVD291VUSGSSA
2021-05-1416:10 UTCm62611 856.90NAVD881VUSGSSA
2021-05-1416:10 UTCm7201971.10  1VUSGSSA
2021-08-1816:59 UTCm62610 853.83NGVD291VUSGSSA
2021-08-1816:59 UTCm62611 853.67NAVD881VUSGSSA
2021-08-1816:59 UTCm7201974.33  1VUSGSSA
2021-11-1915:30 UTCm62610 853.31NGVD291VUSGSSA
2021-11-1915:30 UTCm62611 853.15NAVD881VUSGSSA
2021-11-1915:30 UTCm7201974.85  1VUSGSSA
2022-02-0914:16 UTCm62610 854.42NGVD291VUSGSSA
2022-02-0914:16 UTCm62611 854.26NAVD881VUSGSSA
2022-02-0914:16 UTCm7201973.74  1VUSGSSA
2022-05-2019:09 UTCm62610 857.08NGVD291VUSGSSA
2022-05-2019:09 UTCm62611 856.92NAVD881VUSGSSA
2022-05-2019:09 UTCm7201971.08  1VUSGSSA
2022-09-0918:22 UTCm62610 855.87NGVD291VUSGSSA
2022-09-0918:22 UTCm62611 855.71NAVD881VUSGSSA
2022-09-0918:22 UTCm7201972.29  1VUSGSSA
2023-01-0519:03 UTCm62610 856.42NGVD291VUSGSSA
2023-01-0519:03 UTCm62611 856.26NAVD881VUSGSSA
2023-01-0519:03 UTCm7201971.74  1VUSGSSA
2023-04-1817:09 UTCm62610 859.00NGVD291VUSGSSA
2023-04-1817:09 UTCm62611 858.84NAVD881VUSGSSA
2023-04-1817:09 UTCm7201969.16  1VUSGSSA
2023-07-3118:01 UTCm62610 850.13NGVD291VUSGSSA
2023-07-3118:01 UTCm62611 849.97NAVD881VUSGSSA
2023-07-3118:01 UTCm7201974.81  1VUSGSSA
2023-11-1420:09 UTCm62610 851.03NGVD291VUSGSSA
2023-11-1420:09 UTCm62611 850.87NAVD881VUSGSSA
2023-11-1420:09 UTCm7201973.91  1VUSGSSA

Explanation
SectionCodeDescription
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 agencyIL050AECOM, Inc, IL
Measuring agencyUSGSU.S. Geological Survey
Source of measurementAReported by another government agency (do not use "A" if reported by owner, use "O").
Source of measurementSMeasured by personnel of reporting agency.
Water-level approval statusAApproved for publication -- Processing and review completed.