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Groundwater levels for the Nation

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  • 420028091375802
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USGS 420028091375802 083N07W11CCD 01819 1944

Linn County, Iowa
Latitude  42°00'28", Longitude  91°37'58" NAD27
Land-surface elevation 790 feet above NGVD29
The depth of the well is 295 feet below land surface.
The depth of the hole is 295 feet below land surface.
This well is completed in the Silurian-Devonian aquifers (N400SLRDVN) national aquifer.
This well is completed in the Silurian System (350SLRN) 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
1944-06-13 D62610 724.00NGVD291OUSGSSP
1944-06-13 D62611 723.92NAVD881OUSGSSP
1944-06-13 D7201966.00  1OUSGSSP
1993-07-20 D62610 727.50NGVD291S  A
1993-07-20 D62611 727.42NAVD881S  A
1993-07-20 D7201962.50  1S  A

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
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.
Measuring agencyNot determined
Measuring agencyUSGSU.S. Geological Survey
Source of measurementNot determined
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.