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Network wells depicted on the Cook County, IL location map
Note: Color shading in the table below indicates multiple wells that plot as a single point on the state location map above.
Note: BLS = Water Level in Feet Below Land Surface, RVD = Water Level referenced to a vertical datum

Map Index	Site ID		Site Name	Most Recent Measurement	Date	Well Depth	Local Aquifer
1	414238087401101		BH1S	11.7 BLS	9/18/2009	15	Quaternary System
2	414238087401102		BH1D	11.7 BLS	9/18/2009	90	Quaternary System
3	414315087313101		BH18S Calumet Park	8.9 BLS	9/2/2009	18	Fill, Holocene
4	414315087313102		BH18I Calumet Park	12.3 BLS	9/2/2009	45	Quaternary System
5	414315087313103		BH18D Calumet Park	44.3 BLS	9/2/2009	68	Niagaran Series
6	415046087405401		39N14E-30.7e	8.25 BLS	11/12/2009	16.8	Quaternary System
7	415109087385901		39N14E-29.2h	6.08 BLS	11/12/2009	12.	Quaternary System
8	415109087395401		39N14E-20.8a	5.96 BLS	11/12/2009	19.6	Quaternary System
9	415109087395402		39N14E-20.8a2	6.25 BLS	11/12/2009	10.2	Quaternary System
10	420114088141801		41N9E-20.7b	34 BLS	7/27/2009	47.4	Quaternary System

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U.S. Department of the Interior | U.S. Geological Survey | Water Resources Discipline | Office of Groundwater

URL: http://groundwaterwatch.usgs.gov/countymaps/IL_031.html
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Last update: Sunday, November 22, 2009 at 14:45