An intensive survey of the Vermilion River Basin (Wabash River drainage) 1997 : data collection methods and summary /

"The Illinois Environmental Protection Agency monitors surface waters (i.e. lakes and streams) through a variety of programs. The most extensive is the Ambient Water Quality Monitoring Network (AWQMN) which consists of 203 stream stations statewide sampled on a 6 week cycle since October 1977." -- p. 1.

An intensive survey of the Skokie River (Segment A-01 of the Des Plaines River Basin), April-December, 1978 /

Bibliography: p. 66-67.

An intensive survey of the Kishwaukee River and its tributaries, 1983.

"IEPA/WPC/88-009."

An intensive survey of the Vermilion River basin, 1985-1986 /

"October 1989."--Cover.

An intensive survey of the American Bottoms Basin, 1984 / by Merrill R. Matson.

"June 1989."

An intensive survey of the Mackinaw River Basin, 1994 : staff report /

"December 1996"--Cover.

An Air monitoring survey design for toxic air pollutants : final report /

"ILENR/RE-AQ-89/05."

Annual air quality report.

Mode of access: Internet.

Annual report : IEPA emergency response.

Mode of access: Internet.

Annual report on hazardous waste, generation, treatment, storage and disposal.

Mode of access: Internet.

Annual report.

Report year ends June 30.

Biological investigation of Mississippi River central and north central basins, A-01, A-02, and B-01, B-02 /

Bibliography: p. 19-20.

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."

Blue Creek watershed project : executive summary and recommendations /

IEPA/WPC/84-008.

Clean air newsletter.

Description based on: September, 1991; title from caption.