Select reports on the Rock River, in chronological order
Geology of a Section of the Rock River Valley from Oregon in Ogle County to Sterling in Whiteside County by
Publication Date: 1861pp. 53-58 in Transactions of the Illinois Natural History Society, Volume I, Series I.Report on the Rock River Basin in Illinois by
Publication Date: 1938Water quality management basin plan, phase I : Rock River Basin by
Publication Date: 1976Produced to meet the requirements of the Federal Water Pollution Control Act Amendments of 1972 for "phase I plans" described in 40 CFR parts 131-132.- An Assessment of the Water Quality of the Rock River Basin Derived from a Biological Investigation
byPublication Date: 1978Report to the Illinois Environmental Protection Agency based on macro-invertebrate sampling of 517 sites in 1976 to evaluate the impact of 134 point sources, with additional sampling to evaluate agricultural non-point source pollution. The predominant stream classification found was "unbalanced" (54% of sites); 38% of sites were classified as "semi-polluted." 
Rock River Area AssessmentPublication Date: 1996
Lower Rock River Area AssessmentPublication Date: 1998