Critical Trends Assessment Program Regional Watershed Assessments

The Regional Watershed Assessments were conducted as part of the Critical Trends Assessment Program. They document the natural resources including geological, water, biotic, and archeological resources as well as socioeconomic and environmental quality aspects of 32 major watersheds in Illinois. The program was administered by the Illinois Department of Natural Resources and included substantial contributions from each of the State Scientific Surveys which are now part of the Prairie Research Institute. The "Area Assessments" are detailed technical volumes describing each watershed in great depth. Also included in this collection are summary regional inventories of some watersheds, based on information in the technical volumes, but intended for a general audience.

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