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Groundwater levels for the Nation

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Agency code = usgs
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  • 413523092050501
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USGS 413523092050501 078N11W23DDD

Iowa County, Iowa
Latitude  41°32'22.9", Longitude  92°05'07.9" NAD83
Land-surface elevation 740 feet above NGVD29
The depth of the well is 30.0 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
1998-06-22 D62610 734.45NGVD291SUSGSSP
1998-06-22 D62611 734.40NAVD881SUSGSSP
1998-06-22 D720195.55  1SUSGSSP
2009-07-1620:00 UTCm62610 730.86NGVD291TUSGSSA
2009-07-1620:00 UTCm62611 730.81NAVD881TUSGSSA
2009-07-1620:00 UTCm720199.14  1TUSGSSA
2015-07-0920:23 UTCm62610 734.80NGVD291TUSGSSA
2015-07-0920:23 UTCm62611 734.75NAVD881TUSGSSA
2015-07-0920:23 UTCm720195.20  1TUSGSSA
2019-08-0721:15 UTCm62610 733.58NGVD291VUSGSSA
2019-08-0721:15 UTCm62611 733.53NAVD881VUSGSSA
2019-08-0721:15 UTCm720196.42  1VUSGSSA
2023-07-2514:28 UTCm62610 730.19NGVD291VUSGSSA
2023-07-2514:28 UTCm62611 730.14NAVD881VUSGSSA
2023-07-2514:28 UTCm720199.81  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 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.