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Groundwater levels for the Nation

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Agency code = usgs
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  • 414239087543801
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USGS 414239087543801 37N12E- 7.7e1

Cook County, Illinois
Latitude  41°42'39", Longitude  87°54'38" NAD27
Land-surface elevation 651.59 feet above NGVD29
The depth of the well is 225 feet below land surface.
This well is completed in the Silurian-Devonian aquifers (N400SLRDVN) national aquifer.
This well is completed in the Devonian-Silurian System (340DVSL) 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
1985-10-29 D62610 580.91NGVD291S  A
1985-10-29 D62611 580.62NAVD881S  A
1985-10-29 D7201970.68  1S  A
1985-11-05 D62610 581.23NGVD291S  A
1985-11-05 D62611 580.94NAVD881S  A
1985-11-05 D7201970.36  1S  A
1985-12-04 D62610 582.28NGVD291S  A
1985-12-04 D62611 581.99NAVD881S  A
1985-12-04 D7201969.31  1S  A
1985-12-05 D62610 582.39NGVD291S  A
1985-12-05 D62611 582.10NAVD881S  A
1985-12-05 D7201969.20  1S  A
1986-07-09 D62610 581.46NGVD291S  A
1986-07-09 D62611 581.17NAVD881S  A
1986-07-09 D7201970.13  1S  A
1986-08-20 D62610 580.71NGVD291S  A
1986-08-20 D62611 580.42NAVD881S  A
1986-08-20 D7201970.88  1S  A
1986-08-21 D62610 580.56NGVD291S  A
1986-08-21 D62611 580.27NAVD881S  A
1986-08-21 D7201971.03  1S  A
1986-11-03 D62610 580.84NGVD291S  A
1986-11-03 D62611 580.55NAVD881S  A
1986-11-03 D7201970.75  1S  A
1987-03-09 D62610 581.52NGVD291S  A
1987-03-09 D62611 581.23NAVD881S  A
1987-03-09 D7201970.07  1S  A
1987-10-29 D62610 581.13NGVD291S  A
1987-10-29 D62611 580.84NAVD881S  A
1987-10-29 D7201970.46  1S  A
1990-04-19 D62610 582.51NGVD291S  A
1990-04-19 D62611 582.22NAVD881S  A
1990-04-19 D7201969.08  1S  A
1990-06-2219:00 UTCm62610 582.41NGVD291SUSGSSA
1990-06-2219:00 UTCm62611 582.12NAVD881SUSGSSA
1990-06-2219:00 UTCm7201969.18  1SUSGSSA
1990-07-1321:20 UTCm62610 581.65NGVD291SUSGSSA
1990-07-1321:20 UTCm62611 581.36NAVD881SUSGSSA
1990-07-1321:20 UTCm7201969.94  1SUSGSSA
1990-08-0321:20 UTCm62610 581.93NGVD291SUSGSSA
1990-08-0321:20 UTCm62611 581.64NAVD881SUSGSSA
1990-08-0321:20 UTCm7201969.66  1SUSGSSA
1990-10-3018:00 UTCm62610 580.83NGVD291SUSGSSA
1990-10-3018:00 UTCm62611 580.54NAVD881SUSGSSA
1990-10-3018:00 UTCm7201970.76  1SUSGSSA

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.
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.