An assessment of the water quality of the Rock River Basin derived from a biological investigation /

"Prepared for the Illinois Environmental Protection Agency."

An assessment of the water quality of the Cache River Basin derived from a biological investigation /

"Prepared for the Illinois Environmental Protection Agency."

An intensive water quality survey of the Rock River from Rockford to Byron, Illinois, May-October, 1978 /

Bibliography: p. 35.

An Issues/options paper for comprehensive water quality standards for groundwater /

"December 1988."--Cover.

Biological and water quality survey of the Carroll Creek Watershed, Carroll County, Illinois, 1987-1988.

"IEPA/WPC/89-163."--Cover.

Biological and water quality survey of three tributaries to the Sangamon River : South Fork basin, Mosquito Creek and Long Point Slough, September thru November, 1989 : Staff Report /

"May 1991."

Biological and water quality survey of the Vermilion River Vermilion County, Illinois, 1994 /

"May 1995."

Data collection methods and summaries for the assessment of stream water quality in the Vermilion River Basin (Wabash River), 2001 /

Cover title.

Economic impact of proposed water quality and effluent standard amendments for water in the Sangamon River Basin /

"November 1986."

Feasibility of a systematic approach to water quality management in Illinois : annual report of stream/lake classification project /

Pbk.

Illinois integrated water quality report and section 303(d) list ... : water resource assessment information and listing of impaired waters.

Mode of access: Internet.

Illinois water quality report /

Mode of access: Internet.

Illinois water quality report.

Latest issue consulted: 2002.

Illinois water quality inventory report.

Mode of access: Internet.

Illinois' agricultural water quality management programs : a status report : conference proceedings of April 13, 1982 at Department of Agriculture Auditorium, State Fairgrounds, Springfield, Illinois.

"June 1982."