Browse Critical Trends Assessment Program Regional Watershed Assessments by Author "Illinois Department of Natural Resources, Illinois State Water Survey"

  • Illinois Department of Natural Resources. Office of Scientific Research and Analysis; Illinois Department of Natural Resources, Illinois State Water Survey (Illinois Dept. of Natural Resources, 2002)
    The Shawnee Area is roughly defined as that portion of the Shawnee Hills located in Hardin and Pope counties and the eastern third of Johnson County, as well as small portions of Massac, Saline, and Gallatin counties. The ...

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  • Illinois Department of Natural Resources, Office of Scientific Research; Illinois Department of Natural Resources, Illinois State Water Survey (Illinois Dept. of Natural Resources, 2001)
    The Upper Rock River Assessment Area is defined by that portion of the Rock River watershed downstream from the Illinois-Wisconsin state line to the Rock River's confluence with Pine Creek near Grand Detour. The area falls ...

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