An intensive survey of the Mackinaw River Basin, 1987 /

"September 1988."--Cover.

An intensive survey of the Henderson Creek Basin, 1994 /

"February, 1996."

An intensive survey of the Indian Creek Basin, 1992 /

"IEPA/WPC/95-2."--Cover.

An intensive survey of the Elkhorn Creek Basin, 1985.

"IEPA/WPC/88-017."--Cover.

An intensive survey of the Pecatonica River Basin, 1984-1985.

"February 1988."--Cover.

An intensive survey of the Big Muddy main stem from Rend Lake to the Mississippi River Summer 1988 /

"IEPA/WPC/91-56."--Cover.

An intensive survey of the Embarras River Basin, 1987 /

"IEPA/WPC/89-212."--Cover.

An intensive survey of the Little Vermilion River as affected by seasonal variation, 1992 /

"March 1993."

An intensive survey of Rock River tributaries, 1985.

"February 1988."--Cover.

An intensive survey of the Kaskaskia River Basin, 1982-83 /

"IEPA/WPC/89-105."--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 Vermilion River basin, 1985-1986 /

"October 1989."--Cover.

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

"June 1989."