Maps - Illinois State Water Survey

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  • Illinois State Water Survey (2006)
    Illinois Community Water Supply Wells - Illinois has abundant buried groundwater reserves that supply millions of gallons of groundwater per day for public, agricultural, and industrial/commercial use. These aquifers are ...

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  • Illinois State Water Survey (2000)
    Major Watersheds of Illinois - This map illustrates general boundaries of major watersheds of Illinois. Shades of blue and green indicate watersheds in the Mississippi River basin. Watersheds with shades of green are located ...

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  • Illinois State Water Survey (2004-02-17)
    Estimated Potential Yield of Sand and Gravel Aquifers - Taken from An Analysis of Groundwater Use to Aquifer Potential Yield in Illinois, Wehrmann, H. Allen, Sean V. Sinclair, and Timothy P. Bryant., 2003 Illinois State ...

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  • Illinois State Water Survey (2007-04-12)
    1996 Peoria Lake Bathymetry - The bathymetric contours in this map were derived from a triangulated irregular network (TIN) built using the Z values from the surveyed cross-section points. LaMBert Conformal Conic projection ...

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  • Illinois State Water Survey (2014-08)
    2012 Center Pivot Irrigation in Whiteside County, Illinois - Soils in the southern part of Whiteside County are commonly sandy and require irrigation, for which the Sankoty Aquifer is the primary water source. The Sankoty ...

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