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Groundwater levels for the Nation

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Agency code = usgs
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  • 415939091400201
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USGS 415939091400201 2015USGS GPW5

Linn County, Iowa
Latitude  41°59'39.32", Longitude  91°40'02.50" NAD83
Land-surface elevation 729 feet above NAVD88
The depth of the well is 26.0 feet below land surface.
The depth of the hole is 26.0 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
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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
2015-09-1617:40 UTCm62610 720.23NGVD291TUSGSSA
2015-09-1617:40 UTCm62611 720.15NAVD881TUSGSSA
2015-09-1617:40 UTCm720198.85  1TUSGSSA
2015-09-2215:05 UTCm62610 720.60NGVD291TUSGSSA
2015-09-2215:05 UTCm62611 720.52NAVD881TUSGSSA
2015-09-2215:05 UTCm720198.48  1TUSGSSA
2016-04-1918:53 UTCm62610 720.90NGVD291TUSGSSA
2016-04-1918:53 UTCm62611 720.82NAVD881TUSGSSA
2016-04-1918:53 UTCm720198.18  1TUSGSSA
2016-06-2813:10 UTCm62610 720.92NGVD291TUSGSSA
2016-06-2813:10 UTCm62611 720.84NAVD881TUSGSSA
2016-06-2813:10 UTCm720198.16  1TUSGSSA
2016-10-2714:03 UTCm62610 720.85NGVD291TUSGSSA
2016-10-2714:03 UTCm62611 720.77NAVD881TUSGSSA
2016-10-2714:03 UTCm720198.23  1TUSGSSA
2017-05-0214:35 UTCm62610 721.28NGVD291SUSGSSA
2017-05-0214:35 UTCm62611 721.20NAVD881SUSGSSA
2017-05-0214:35 UTCm720197.80  1SUSGSSA
2017-10-2613:31 UTCm62610 720.68NGVD291VUSGSSA
2017-10-2613:31 UTCm62611 720.60NAVD881VUSGSSA
2017-10-2613:31 UTCm720198.40  1VUSGSSA
2018-07-1115:22 UTCm62610 720.52NGVD291VUSGSSA
2018-07-1115:22 UTCm62611 720.44NAVD881VUSGSSA
2018-07-1115:22 UTCm720198.56  1VUSGSSA
2018-10-3013:45 UTCm62610 720.88NGVD291VUSGSSA
2018-10-3013:45 UTCm62611 720.80NAVD881VUSGSSA
2018-10-3013:45 UTCm720198.20  1VUSGSSA
2019-05-2213:01 UTCm62610 721.53NGVD291VUSGSSA
2019-05-2213:01 UTCm62611 721.45NAVD881VUSGSSA
2019-05-2213:01 UTCm720197.55  1VUSGSSA
2020-03-0215:57 UTCm62610 720.61NGVD291TUSGSSP
2020-03-0215:57 UTCm62611 720.53NAVD881TUSGSSP
2020-03-0215:57 UTCm720198.47  1TUSGSSP

Explanation
SectionCodeDescription
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.