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Groundwater levels for the Nation

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USGS 420031091422601 2015USGS GPW4

Linn County, Iowa
Latitude  42°00'31.5", Longitude  91°42'26.3" NAD83
Land-surface elevation 720.32 feet above NAVD88
The depth of the well is 36.0 feet below land surface.
The depth of the hole is 36 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 Holocene Alluvium (111ALVM) local aquifer.
Output formats
Table of data
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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
2015-09-1619:50 UTCm62610 715.60NGVD291TUSGSSA
2015-09-1619:50 UTCm62611 715.51NAVD881TUSGSSA
2015-09-1619:50 UTCm720194.60  1TUSGSSA
2015-09-2219:50 UTCm62610 715.92NGVD291TUSGSSA
2015-09-2219:50 UTCm62611 715.83NAVD881TUSGSSA
2015-09-2219:50 UTCm720194.28  1TUSGSSA
2016-04-1915:25 UTCm62610 716.52NGVD291TUSGSSA
2016-04-1915:25 UTCm62611 716.43NAVD881TUSGSSA
2016-04-1915:25 UTCm720193.68  1TUSGSSA
2016-06-2817:21 UTCm62610 718.48NGVD291TUSGSSA
2016-06-2817:21 UTCm62611 718.39NAVD881TUSGSSA
2016-06-2817:21 UTCm720191.72  1TUSGSSA
2016-10-2717:21 UTCm62610 715.78NGVD291TUSGSSA
2016-10-2717:21 UTCm62611 715.69NAVD881TUSGSSA
2016-10-2717:21 UTCm720194.42  1TUSGSSA
2017-05-0217:55 UTCm62610 717.04NGVD291SUSGSSA
2017-05-0217:55 UTCm62611 716.95NAVD881SUSGSSA
2017-05-0217:55 UTCm720193.16  1SUSGSSA
2017-06-1915:30 UTCm62610 716.46NGVD291VUSGSSA
2017-06-1915:30 UTCm62611 716.37NAVD881VUSGSSA
2017-06-1915:30 UTCm720193.74  1VUSGSSA
2017-10-2616:31 UTCm62610 715.11NGVD291VUSGSSA
2017-10-2616:31 UTCm62611 715.02NAVD881VUSGSSA
2017-10-2616:31 UTCm720195.09  1VUSGSSA
2018-10-3016:07 UTCm62610 716.89NGVD291VUSGSSA
2018-10-3016:07 UTCm62611 716.80NAVD881VUSGSSA
2018-10-3016:07 UTCm720193.31  1VUSGSSA
2019-05-2215:30 UTCm62610 717.40NGVD291VUSGSSA
2019-05-2215:30 UTCm62611 717.31NAVD881VUSGSSA
2019-05-2215:30 UTCm720192.80  1VUSGSSA
2019-06-2006:07 UTCm62610 717.04NGVD291VUSGSSA
2019-06-2006:07 UTCm62611 716.95NAVD881VUSGSSA
2019-06-2006:07 UTCm720193.16  1VUSGSSA
2019-08-0816:39 UTCm62610 716.18NGVD291VUSGSSA
2019-08-0816:39 UTCm62611 716.09NAVD881VUSGSSA
2019-08-0816:39 UTCm720194.02  1VUSGSSA
2019-11-0418:29 UTCm62610 716.13NGVD291TUSGSSA
2019-11-0418:29 UTCm62611 716.04NAVD881TUSGSSA
2019-11-0418:29 UTCm720194.07  1TUSGSSA
2019-11-0615:11 UTCm62610 716.48NGVD291TUSGSSA
2019-11-0615:11 UTCm62611 716.39NAVD881TUSGSSA
2019-11-0615:11 UTCm720193.72  1TUSGSSA
2019-11-0719:55 UTCm62610 716.12NGVD291TUSGSSA
2019-11-0719:55 UTCm62611 716.03NAVD881TUSGSSA
2019-11-0719:55 UTCm720194.08  1TUSGSSA
2019-11-1821:03 UTCm62610 715.31NGVD291TUSGSSA
2019-11-1821:03 UTCm62611 715.22NAVD881TUSGSSA
2019-11-1821:03 UTCm720194.89  1TUSGSSA
2020-03-0218:08 UTCm62610 714.83NGVD291TUSGSSA
2020-03-0218:08 UTCm62611 714.74NAVD881TUSGSSA
2020-03-0218:08 UTCm720195.37  1TUSGSSA
2020-07-1018:15 UTCm62610 716.72NGVD291VUSGSSA
2020-07-1018:15 UTCm62611 716.63NAVD881VUSGSSA
2020-07-1018:15 UTCm720193.48  1VUSGSSA
2020-09-2516:31 UTCm62610 714.87NGVD291TUSGSSA
2020-09-2516:31 UTCm62611 714.78NAVD881TUSGSSA
2020-09-2516:31 UTCm720195.33  1TUSGSSA
2020-12-2118:19 UTCm62610 713.83NGVD291VUSGSSA
2020-12-2118:19 UTCm62611 713.74NAVD881VUSGSSA
2020-12-2118:19 UTCm720196.37  1VUSGSSA
2021-03-3014:59 UTCm62610 715.35NGVD291VUSGSSA
2021-03-3014:59 UTCm62611 715.26NAVD881VUSGSSA
2021-03-3014:59 UTCm720194.85  1VUSGSSA
2021-06-2320:32 UTCm62610 713.07NGVD291VUSGSSA
2021-06-2320:32 UTCm62611 712.98NAVD881VUSGSSA
2021-06-2320:32 UTCm720197.13  1VUSGSSA
2021-10-1418:18 UTCm62610 713.97NGVD291VUSGSSA
2021-10-1418:18 UTCm62611 713.88NAVD881VUSGSSA
2021-10-1418:18 UTCm720196.23  1VUSGSSA
2022-02-0118:42 UTCm62610 710.46NGVD291VUSGSSP
2022-02-0118:42 UTCm62611 710.37NAVD881VUSGSSP
2022-02-0118:42 UTCm720199.74  1VUSGSSP
2022-06-2718:49 UTCm62610 713.00NGVD291VUSGSSP
2022-06-2718:49 UTCm62611 712.91NAVD881VUSGSSP
2022-06-2718:49 UTCm720197.20  1VUSGSSP
2022-10-2017:16 UTCm62610 713.50NGVD291VUSGSSP
2022-10-2017:16 UTCm62611 713.41NAVD881VUSGSSP
2022-10-2017:16 UTCm720196.91  1VUSGSSP
2022-12-1922:30 UTCm62610 714.61NGVD291VUSGSSP
2022-12-1922:30 UTCm62611 714.52NAVD881VUSGSSP
2022-12-1922:30 UTCm720195.80  1VUSGSSP
2022-12-1922:35 UTCm62610 714.61NGVD291VUSGSSP
2022-12-1922:35 UTCm62611 714.52NAVD881VUSGSSP
2022-12-1922:35 UTCm720195.80  1VUSGSSP
2023-02-0817:15 UTCm62610 712.55NGVD291VUSGSSP
2023-02-0817:15 UTCm62611 712.46NAVD881VUSGSSP
2023-02-0817:15 UTCm720197.86  1VUSGSSP
2023-03-1520:30 UTCm62610 715.73NGVD291VUSGSSP
2023-03-1520:30 UTCm62611 715.64NAVD881VUSGSSP
2023-03-1520:30 UTCm720194.68  1VUSGSSP
2023-06-1320:29 UTCm62610 714.31NGVD291VUSGSSP
2023-06-1320:29 UTCm62611 714.22NAVD881VUSGSSP
2023-06-1320:29 UTCm720196.10  1VUSGSSP
2023-07-2019:29 UTCm62610 713.94NGVD291VUSGSSP
2023-07-2019:29 UTCm62611 713.85NAVD881VUSGSSP
2023-07-2019:29 UTCm720196.47  1VUSGSSP
2023-09-2517:59 UTCm62610 713.31NGVD291VUSGSSP
2023-09-2517:59 UTCm62611 713.22NAVD881VUSGSSP
2023-09-2517:59 UTCm720197.10  1VUSGSSP
2023-12-1216:51 UTCm62610 713.92NGVD291VUSGSSP
2023-12-1216:51 UTCm62611 713.83NAVD881VUSGSSP
2023-12-1216:51 UTCm720196.49  1VUSGSSP
2024-03-2617:49 UTCm62610 711.83NGVD291VUSGSSP
2024-03-2617:49 UTCm62611 711.74NAVD881VUSGSSP
2024-03-2617:49 UTCm720198.58  1VUSGSSP
2024-06-1814:29 UTCm62610 715.25NGVD291VUSGSSP
2024-06-1814:29 UTCm62611 715.16NAVD881VUSGSSP
2024-06-1814:29 UTCm720195.16  1VUSGSSP

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 measurementSSteel-tape measurement.
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.
Water-level approval statusPProvisional data subject to revision.