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Groundwater levels for the Nation

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Agency code = usgs
site_no list =
  • 414854087491601
Minimum number of levels = 1
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USGS 414854087491601 38N12E- 1.8e1

Cook County, Illinois
Latitude  41°48'54", Longitude  87°49'16" NAD27
Land-surface elevation 620.60 feet above NGVD29
The depth of the well is 2,020 feet below land surface.
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
1929-06 M62610 315.60NGVD291Z  A
1929-06 M62611 315.31NAVD881Z  A
1929-06 M72019305.00  1Z  A
1936 Y62610 315.60NGVD29PO  A
1936 Y62611 315.31NAVD88PO  A
1936 Y72019305.00  PO  A
1943 Y62610 245.60NGVD29PO  A
1943 Y62611 245.31NAVD88PO  A
1943 Y72019375.00  PO  A
1944 Y62610 223.60NGVD29PO  A
1944 Y62611 223.31NAVD88PO  A
1944 Y72019397.00  PO  A
1945 Y62610 239.60NGVD29PO  A
1945 Y62611 239.31NAVD88PO  A
1945 Y72019381.00  PO  A
1948 Y62610 206.60NGVD29PO  A
1948 Y62611 206.31NAVD88PO  A
1948 Y72019414.00  PO  A
1949 Y62610 194.60NGVD29PO  A
1949 Y62611 194.31NAVD88PO  A
1949 Y72019426.00  PO  A
1951 Y62610 207.60NGVD29PO  A
1951 Y62611 207.31NAVD88PO  A
1951 Y72019413.00  PO  A
1952 Y62610 164.60NGVD29PO  A
1952 Y62611 164.31NAVD88PO  A
1952 Y72019456.00  PO  A
1953 Y62610 168.60NGVD29PO  A
1953 Y62611 168.31NAVD88PO  A
1953 Y72019452.00  PO  A

Explanation
SectionCodeDescription
Water-level date-time accuracyMDate is accurate to the Month
Water-level date-time accuracyYDate is accurate to the Year
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
StatusPPumping
Method of measurementOObserved.
Method of measurementZOther.
Measuring agencyNot determined
Source of measurementNot determined
Water-level approval statusAApproved for publication -- Processing and review completed.