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Groundwater levels for the Nation

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Agency code = usgs
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  • 412748091285101
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USGS 412748091285101 077N05W19BCB

Johnson County, Iowa
Latitude  41°27'48.7", Longitude  91°28'52.8" NAD83
Land-surface elevation 650 feet above NGVD29
The depth of the well is 94.0 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
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
1998-06-16 D62610 606.40NGVD291OUSGSSP
1998-06-16 D62611 606.24NAVD881OUSGSSP
1998-06-16 D7201943.60  1OUSGSSP
2007-06-2515:00 UTCm62610 606.91NGVD291TUSGSSA
2007-06-2515:00 UTCm62611 606.75NAVD881TUSGSSA
2007-06-2515:00 UTCm7201943.09  1TUSGSSA
2015-07-0618:18 UTCm62610 605.83NGVD291TUSGSSA
2015-07-0618:18 UTCm62611 605.67NAVD881TUSGSSA
2015-07-0618:18 UTCm7201944.17  1TUSGSSA
2017-07-25 D62610 603.23NGVD291SUSGSSA
2017-07-25 D62611 603.07NAVD881SUSGSSA
2017-07-25 D7201946.77  1SUSGSSA
2023-07-2413:55 UTCm62610 592.91NGVD291VUSGSSA
2023-07-2413:55 UTCm62611 592.75NAVD881VUSGSSA
2023-07-2413:55 UTCm7201957.09  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 measurementOObserved.
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.