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DESCRIPTION:

Latitude 40°15'42",   Longitude 90°00'47"   NAD27
Mason County, Illinois   , Hydrologic Unit 07130003

Well depth: 20 feet
Hole depth: 20 feet
Land surface altitude: 490 feet above NGVD29.
Well completed in "Sand and gravel aquifers (glaciated regions)" (N100GLCIAL) national aquifer.
Well completed in "Quaternary System" (110QRNR) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1973-01-01	1973-01-01	1
Field/Lab water-quality samples	1991-04-05	2000-10-31	8
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