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Groundwater levels for the Nation

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Agency code = usgs
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  • 415921088110401
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USGS 415921088110401 41N 9E-34.1b3

Cook County, Illinois
Latitude  41°59'21", Longitude  88°11'04" NAD27
Land-surface elevation 795 feet above NGVD29
The depth of the well is 99 feet below land surface.
The depth of the hole is 99 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 Quaternary System (110QRNR) 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
1960-10 M62610 763.00NGVD291O  A
1960-10 M62611 762.74NAVD881O  A
1960-10 M7201932.00  1O  A
1962-05-24 D62610 759.50NGVD291O  A
1962-05-24 D62611 759.24NAVD881O  A
1962-05-24 D7201935.50  1O  A
1965-10-26 D62610 751.00NGVD291O  A
1965-10-26 D62611 750.74NAVD881O  A
1965-10-26 D7201944.00  1O  A
1968-05-10 D62610 754.00NGVD291O  A
1968-05-10 D62611 753.74NAVD881O  A
1968-05-10 D7201941.00  1O  A
1979-07-18 D62610 753.00NGVD291O  A
1979-07-18 D62611 752.74NAVD881O  A
1979-07-18 D7201942.00  1O  A
1982-02-17 D62610 741.00NGVD291O  A
1982-02-17 D62611 740.74NAVD881O  A
1982-02-17 D7201954.00  1O  A
1985-09-0620:05 UTCm62610 763.00NGVD291OIL006AA
1985-09-0620:05 UTCm62611 762.74NAVD881OIL006AA
1985-09-0620:05 UTCm7201932.00  1OIL006AA

Explanation
SectionCodeDescription
Water-level date-time accuracyDDate is accurate to the Day
Water-level date-time accuracyMDate is accurate to the Month
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 measurementOObserved.
Measuring agencyNot determined
Measuring agencyIL006State of Illinois Environmental Protection Agency
Source of measurementNot determined
Source of measurementAReported by another government agency (do not use "A" if reported by owner, use "O").
Water-level approval statusAApproved for publication -- Processing and review completed.