An intensive survey of the Little Wabash River Basin, Summer 1989 /

"IEPA/WPC/92-053."--Cover.

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 Saline River Basin, summer 1993 /

"The 1993 Intensive Survey of the Saline River Basin was developed in conjunction with the Illinois Cooperative Intensive Basin Survey Program jointly conducted by IEPA and the Illinois Department of Conservation."

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 intensive survey of the Cache River Basin, data summary : summer 1999 /

"IEPA/BOW/02-021."--Cover.

Annual environmental conditions report ... /

Title from cover.

Annual air quality report.

Mode of access: Internet.

Annual report /

Title from cover.

Annual report /

Description based on: 1985; title from cover.

Annual report /

Description based on: 1987; title from cover.

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

Mode of access: Internet.