Browse Critical Trends Assessment Program Regional Watershed Assessments by Subject "Sustainable development --Illinois"

  • Illinois Department of Natural Resources. Office of Scientific Research and Analysis (Illinois Dept. of Natural Resources, 1997)
    The Headwaters assessment area (HAA) is an approximately 1,675 mile2 (I ,072,202 acre) area including much ofChampaign County and portions ofFord, Livingston, McLean, Iroquois, Vermilion, Douglas, Piatt, and De Witt counties ...


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