Illinois Department of Natural Resources, Office of Scientific Research; Illinois Department of Natural Resources, Illinois State Water Survey
Upper Rock River area assessment
Illinois Department of Natural Resources, Office of Scientific Research
Illinois Department of Natural Resources, Illinois State Water Survey
Natural resources surveys --Illinois --Upper Rock River Watershed
Natural resources conservation areas --Illinois --Upper Rock River Watershed
Upper Rock River Watershed (Ill.)
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 predominantly within Winnebago and Ogle counties, with small areas in four additional counties -Boone, Carroll, Lee, and Stephenson. Encompassing approximately 830 square miles, the Upper Rock River area is located almost entirely within the physiographic division defined as the Rock River Hill Country. This division has been glaciated, but the glacial deposition is relatively thin, particularly for the western portion of the area. The topography is characterized by rolling hills and well-developed stream valleys.
This assessment is comprised of four volumes. In Volume 1, Geology discusses the geology, soils, and minerals in the assessment area. Volume 2, Water Resources, discusses the surface and groundwater resources and Volume 3, Living Resources, describes the natural vegetation communities and the fauna of the region. Volume 4 contains three parts: Part I, Socio-Economic Profile, discusses the demographics, infrastructure, and economy of the area; Part II, Environmental Quality, discusses air and water quality, and hazardous and toxic waste generation and management in the area; and Part III, Archaeological Resources, identifies and assesses the archaeological sites known in the area.
Illinois Dept. of Natural Resources
Series/Report Name or Number
Critical Trends Assessment Program
Type of Resource
Copyright and License Information
These documents are a product of the Illinois state scientific surveys
and the Illinois Department of Natural Resources, and has been selected
and made available by the Institute of Natural Resource Sustainability,
University of Illinois at Urbana-Champaign. They are intended solely for
noncommercial research and educational use, and proper attribution is
Detailed assessments of 32 major watersheds in Illinois, conducted through the Critical Trends Assessment Program administered by the Illinois Department of Natural Resources. Includes contributions from each of the State Scientific Surveys which are now part of the Prairie Research Institute.