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Groundwater levels for the Nation

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USGS 420031091441802 083N08W11DDC 1996USGS CRM-14

Linn County, Iowa
Latitude  42°00'31", Longitude  91°44'18" NAD83
Land-surface elevation 725.02 feet above NAVD88
The depth of the well is 27.5 feet below land surface.
The depth of the hole is 27.5 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.
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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
1998-10-2919:14 UTCm62610 715.14NGVD291T  A
1998-10-2919:14 UTCm62611 715.05NAVD881T  A
1998-10-2919:14 UTCm720199.97  1T  A
1998-12-0420:05 UTCm62610 714.26NGVD291T  A
1998-12-0420:05 UTCm62611 714.17NAVD881T  A
1998-12-0420:05 UTCm7201910.85  1T  A
1998-12-2119:07 UTCm62610 712.50NGVD291T  A
1998-12-2119:07 UTCm62611 712.41NAVD881T  A
1998-12-2119:07 UTCm7201912.61  1T  A
1999-01-1420:15 UTCm62610 713.15NGVD291T  A
1999-01-1420:15 UTCm62611 713.06NAVD881T  A
1999-01-1420:15 UTCm7201911.96  1T  A
1999-03-0120:15 UTCm62610 715.56NGVD291T  A
1999-03-0120:15 UTCm62611 715.47NAVD881T  A
1999-03-0120:15 UTCm720199.55  1T  A
2000-08-0418:37 UTCm62610 719.97NGVD291V  A
2000-08-0418:37 UTCm62611 719.88NAVD881V  A
2000-08-0418:37 UTCm720195.14  1V  A
2000-09-0616:50 UTCm62610 716.53NGVD291V  A
2000-09-0616:50 UTCm62611 716.44NAVD881V  A
2000-09-0616:50 UTCm720198.58  1V  A
2001-02-1617:05 UTCm62610 704.50NGVD291V  A
2001-02-1617:05 UTCm62611 704.41NAVD881V  A
2001-02-1617:05 UTCm7201920.61  1V  A
2001-05-0315:10 UTCm62610 721.27NGVD291VUSGSSA
2001-05-0315:10 UTCm62611 721.18NAVD881VUSGSSA
2001-05-0315:10 UTCm720193.84  1VUSGSSA
2001-05-3016:40 UTCm62610 721.75NGVD291VUSGSSA
2001-05-3016:40 UTCm62611 721.66NAVD881VUSGSSA
2001-05-3016:40 UTCm720193.36  1VUSGSSA
2001-06-2620:02 UTCm62610 721.83NGVD291VUSGSSA
2001-06-2620:02 UTCm62611 721.74NAVD881VUSGSSA
2001-06-2620:02 UTCm720193.28  1VUSGSSA
2019-11-1818:50 UTCm62610 718.88NGVD291TUSGSSP
2019-11-1818:50 UTCm62611 718.79NAVD881TUSGSSP
2019-11-1818:50 UTCm720196.23  1TUSGSSP
2020-03-0217:35 UTCm62610 717.78NGVD291TUSGSSP
2020-03-0217:35 UTCm62611 717.69NAVD881TUSGSSP
2020-03-0217:35 UTCm720197.33  1TUSGSSP
2020-07-1016:27 UTCm62610 721.98NGVD291VUSGSSP
2020-07-1016:27 UTCm62611 721.89NAVD881VUSGSSP
2020-07-1016:27 UTCm720193.13  1VUSGSSP
2021-03-3014:12 UTCm62610 718.36NGVD291VUSGSSP
2021-03-3014:12 UTCm62611 718.27NAVD881VUSGSSP
2021-03-3014:12 UTCm720196.75  1VUSGSSP
2021-06-2319:19 UTCm62610 716.55NGVD291VUSGSSP
2021-06-2319:19 UTCm62611 716.46NAVD881VUSGSSP
2021-06-2319:19 UTCm720198.56  1VUSGSSP
2021-10-1415:53 UTCm62610 717.26NGVD291VUSGSSP
2021-10-1415:53 UTCm62611 717.17NAVD881VUSGSSP
2021-10-1415:53 UTCm720197.85  1VUSGSSP
2022-02-0117:19 UTCm62610 715.50NGVD291VUSGSSP
2022-02-0117:19 UTCm62611 715.41NAVD881VUSGSSP
2022-02-0117:19 UTCm720199.61  1VUSGSSP

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 measurementTElectric-tape measurement.
Method of measurementVCalibrated electric-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.