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Groundwater levels for the Nation

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Agency code = usgs
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  • 412808091345001
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USGS 412808091345001 077N06W18DDD

Washington County, Iowa
Latitude  41°28'07.3", Longitude  91°34'50.5" NAD83
Land-surface elevation 635 feet above NGVD29
The depth of the well is 20.0 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
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
1998-06-17 D62610 630.23NGVD291OUSGSSP
1998-06-17 D62611 630.11NAVD881OUSGSSP
1998-06-17 D720194.77  1OUSGSSP
2007-06-1816:15 UTCm62610 627.32NGVD291TUSGSSA
2007-06-1816:15 UTCm62611 627.20NAVD881TUSGSSA
2007-06-1816:15 UTCm720197.68  1TUSGSSA
2009-06-1914:30 UTCm62610 630.13NGVD291TUSGSSA
2009-06-1914:30 UTCm62611 630.01NAVD881TUSGSSA
2009-06-1914:30 UTCm720194.87  1TUSGSSA
2015-07-0619:14 UTCm62610 627.33NGVD291TUSGSSA
2015-07-0619:14 UTCm62611 627.21NAVD881TUSGSSA
2015-07-0619:14 UTCm720197.67  1TUSGSSA
2017-05-31 D62610 628.28NGVD291SUSGSSA
2017-05-31 D62611 628.16NAVD881SUSGSSA
2017-05-31 D720196.72  1SUSGSSA
2019-07-1015:19 UTCm62610 628.59NGVD291VUSGSSA
2019-07-1015:19 UTCm62611 628.47NAVD881VUSGSSA
2019-07-1015:19 UTCm720196.41  1VUSGSSA
2023-07-2414:43 UTCm62610 623.81NGVD291VUSGSSA
2023-07-2414:43 UTCm62611 623.69NAVD881VUSGSSA
2023-07-2414:43 UTCm7201911.19  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.