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Groundwater levels for the Nation

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Agency code = usgs
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  • 420908088081001
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USGS 420908088081001 42N 9E- 1.7b2

Cook County, Illinois
Latitude  42°09'08", Longitude  88°08'10" NAD27
Land-surface elevation 840 feet above NGVD29
The depth of the well is 210 feet below land surface.
The depth of the hole is 210 feet below land surface.
This well is completed in the Silurian-Devonian aquifers (N400SLRDVN) national aquifer.
This well is completed in the Silurian System (350SLRN) local aquifer.
Output formats
Table of data
Tab-separated 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
1929-10 M62610 786.55NGVD291O  A
1929-10 M62611 786.20NAVD881O  A
1929-10 M7201953.45  1O  A
1933-11-07 D62610 788.05NGVD291O  A
1933-11-07 D62611 787.70NAVD881O  A
1933-11-07 D7201951.95  1O  A
1957 Y62610 755.00NGVD291O  A
1957 Y62611 754.65NAVD881O  A
1957 Y7201985.00  1O  A
1962 Y62610 751.00NGVD291O  A
1962 Y62611 750.65NAVD881O  A
1962 Y7201989.00  1O  A
1970-05-11 D62610 744.00NGVD291O  A
1970-05-11 D62611 743.65NAVD881O  A
1970-05-11 D7201996.00  1O  A
1973 Y62610 739.00NGVD291O  A
1973 Y62611 738.65NAVD881O  A
1973 Y72019101.00  1O  A
1985-07-2218:05 UTCm62610 730.00NGVD291OIL006AA
1985-07-2218:05 UTCm62611 729.65NAVD881OIL006AA
1985-07-2218:05 UTCm72019110.00  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 accuracyYDate is accurate to the Year
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.