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Groundwater levels for the Nation

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Agency code = usgs
site_no list =
  • 431249095355801
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USGS 431249095355801 097N40W17CDC 09355 1957

O'Brien County, Iowa
Latitude  43°12'49", Longitude  95°35'58" NAD27
Land-surface elevation 1,550 feet above NGVD29
The depth of the well is 558 feet below land surface.
The depth of the hole is 558 feet below land surface.
This well is completed in the Lower Cretaceous aquifers (N300LCRTCS) national aquifer.
This well is completed in the Dakota Group (217DAKT) 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
1957-10-08 D62610 1230.00NGVD291L  A
1957-10-08 D62611 1230.61NAVD881L  A
1957-10-08 D72019320.00  1L  A
1966-07-14 D62610 1226.50NGVD291OUSGSSP
1966-07-14 D62611 1227.11NAVD881OUSGSSP
1966-07-14 D72019323.50  1OUSGSSP

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 measurementLInterpreted from geophysical logs.
Method of measurementOObserved.
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.