Browse Critical Trends Assessment Program Regional Watershed Assessments by Title

  • Illinois Department of Natural Resources. Office of Scientific Research and Analysis.; Illinois Department of Natural Resources. Illinois State Geological Survey Division (Illinois Dept. of Natural Resources, 2001)
    The Big Muddy River Assessment Area is defined by the watershed of the Big Muddy River, excluding the watersheds of two tributaries, Beaucoup Creek and Kinkaid Creek, which are covered in the Kinkaid Area Assessment. The ...
    untranslated PDF (146MB)
  • Illinois Department of Natural Resources. Office of Scientific Research and Analysis.; Illinois Department of Natural Resources. Illinois State Geological Survey Division (Illinois Dept. of Natural Resources, 1998)
    The Big Rivers assessment covers an area of 1,133,176 acres near the confluence of the Illinois and Mississippi Rivers. As well as including segments of the Mississippi and Illinois Rivers, the area also includes a section ...
    untranslated PDF (112MB)
  • Illinois Department of Natural Resources, Office of Scientific Research and Analysis (Illinois Dept. of Natural Resources, 1997)
    The Cache River originates near Cobden in Union County and has a total length of 176 kilometers (110 miles). The Cache River Basin covers nearly the entire tip ofsouthern Illinois and drains 1,537 km2 (959 rni2, 614,100 ...
    untranslated PDF (2MB)
  • (Illinois Dept. of Natural Resources, 1997)
    This is a product of the Critical Trends Assessment Program (CTAP) and the Ecosystems Program of the Illinois Dept. of Natural Resources (DNR). Both are funded largely through Conservation 2000, a six-year State of Illinois ...
    untranslated PDF (85MB)
  • (Illinois Dept. of Natural Resources, 2000)
    The Calumet area encompasses approximately 184.3 square miles (117,961 acres) in southern Cook County and in a very small fraction of Will County. Waterways in the area include the Calumet-Sag Channel, Little Calumet River, ...
    untranslated PDF (94MB)
  • Sparks, Ruth (Illinois Dept. of Natural Resources, 2000)
    untranslated PDF (79KB)
  • Krohe, James (Illinois Dept. of Natural Resources, 2004-10)
    The fact that the landscape drained by the Chicago River is home to a great city is obvious to even the most distracted tourist. Less obvious is the fact that nature survives, even thrives, amidst the Midwest’s greatest ...
    untranslated PDF (11MB)
  • Illinois Department of Natural Resources, Office of Scientific Research and Analysis (Illinois Dept. of Natural Resources, 2000)
    ~The Chicago RiverlLake Shore assessment area covers approximately 348 square miles in northeastern Illinois and falls within portions of two counties - Cook and Lake. The area is defined by the watershed of the Chicago ...
    untranslated PDF (3MB)
  • (Illinois Dept. of Natural Resources, 1998)
    The Driftless Area Assessment covers an area ofapproximately 632,685 acres in the extreme northwestern part ofthe Dlinois. It encompasses nearly all ofJoe Daviess County, the western half and north-eastern quarter ofCarroll ...
    untranslated PDF (102MB)
  • (Illinois Dept. of Natural Resources, 1999)
    The Du Page River area encompasses approximately 372 square miles (238,462 acres) in northeastern Illinois, mostly in Du Page and Will Counties, with small portions in Cook, Kane, Kendall, and Grundy Counties. The area is ...
    untranslated PDF (4MB)
  • Post, Susan L. (Illinois Dept. of Natural Resources, 2001-02)
    From its perch on a telephone wire strung over a busy interstate, a kestrel surveys its ever-shrinking domain. Gone are Brushy Grove, Twelve-mile Grove, and Jewel Grove, islands of trees in the vast prairie that was ...
    untranslated PDF (5MB)
  • White, John (Illinois Dept. of Natural Resources, 2002)
    The Early Accounts of the Ecology of the Vermilion River Area examines an area in east central Illinois along the Indiana Illinois border. Because significant natural community and species diversity has been found in the ...
    untranslated PDF (7MB)
  • Illinois Department of Natural Resources, Office of Scientific Research and Analysis (Illinois Dept. of Natural Resources, 1997)
    The Embarras River begins just south of Champaign-Urbana in Champaign County and runs south for approximately 194 miles before it empties into the Wabash River below . Billett, in Lawrence County. The area discussed in ...
    untranslated PDF (109MB)
  • Illinois Department of Natural Resources, Office of Scientific Research and Analysis (Illinois Dept. of Natural Resources, 1998)
    The Fox River assessment covers an area ofapproximately 1,720 mile (1,092,874 acres)· spanning eleven counties in north-eastern Illinois, including parts ofLake, McHenry, Kane, Cook, Kendall, DeKalb, and LaSalle counties, ...
    untranslated PDF (122MB)
  • 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 ...
    untranslated PDF (4MB)
  • (Illinois Dept. of Natural Resources, 2000)
    The Sangamon River meanders across central Illinois for more than 240 miles. Its waters accumulate in southeast McLean County and northwest Champaign County and eventually empty into the Illinois River near Beardstown. ...
    untranslated PDF (97MB)
  • Krohe, James Jr. (Illinois Dept. of Natural Resources, 1997)
    Northwest of the town of Grafton, just past Graham Hollow on the Great River Road, 26 miles and about a century from downtown St. Louis, the Brussels ferry shuttles drivers and their cars across the Illinois River to and ...
    untranslated PDF (90MB)
  • (Illinois Dept. of Natural Resources, 1997)
    Just as the Grand Prairie -- Illinois' namesake landscape -- was the heart of the continent's "Prairie Peninsula," so the Headwaters area of east central Illinois is the heart of the Grand Prairie. It is one of the ...
    untranslated PDF (88MB)
  • Illinois Department of Natural Resources (Illinois Dept. of Natural Resources, 1998)
    The Illinois River Bluffs Area Assessment examines an area in west-central Illinois that includes parts of the upper and lower Illinois River watersheds from the vicinity of Hennepin southward to East Peoria. Because ...
    untranslated PDF (5MB)
  • (Illinois Dept. of Natural Resources, 2001)
    The Illinois River Bluffs Assessment Area falls within portions of 11 counties -Bureau, Fulton, Knox, LaSalle, Lee, Marshall, Peoria, Putnam, Stark, Tazewell, and Woodford. It encompasses 2,637 square miles and takes in ...
    untranslated PDF (4MB)