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 Big Muddy River Basin: summer 1995/

"March 1997."

Big Muddy River area assessment /

Examines a 1,731 square mile area in southern Illinois which has been designated a state Resource Rich Area.