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Groundwater levels for the Nation

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Agency code = usgs
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  • 414829087534601
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USGS 414829087534601 38N12E- 5.8c1

Cook County, Illinois
Latitude  41°48'33", Longitude  87°53'54" NAD27
Land-surface elevation 670 feet above NGVD29
The depth of the well is 385 feet below land surface.
The depth of the hole is 385 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
1924-10 M62610 630.00NGVD291O  A
1924-10 M62611 629.72NAVD881O  A
1924-10 M7201940.00  1O  A
1927-09-05 D62610 621.00NGVD291O  A
1927-09-05 D62611 620.72NAVD881O  A
1927-09-05 D7201949.00  1O  A
1931-01-09 D62610 611.50NGVD291O  A
1931-01-09 D62611 611.22NAVD881O  A
1931-01-09 D7201958.50  1O  A
1937-11-04 D62610 610.00NGVD291O  A
1937-11-04 D62611 609.72NAVD881O  A
1937-11-04 D7201960.00  1O  A
1942-05 M62610 614.00NGVD291O  A
1942-05 M62611 613.72NAVD881O  A
1942-05 M7201956.00  1O  A
1954 Y62610 612.00NGVD291O  A
1954 Y62611 611.72NAVD881O  A
1954 Y7201958.00  1O  A
1974-04-01 D62610 433.00NGVD291O  A
1974-04-01 D62611 432.72NAVD881O  A
1974-04-01 D72019237.00  1O  A
1977-04 M62610 420.00NGVD291O  A
1977-04 M62611 419.72NAVD881O  A
1977-04 M72019250.00  1O  A
1985-08-1616:25 UTCm62610 576.00NGVD291OIL006AA
1985-08-1616:25 UTCm62611 575.72NAVD881OIL006AA
1985-08-1616:25 UTCm7201994.00  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.