Management impacts on water quality of forests and rangelands /

"November 1993."

Water quality investigations : Lake Michigan Basin: biology.

"January 1968."

A biological and water quality survey of Sugar Creek and tributaries, Crawford County, Illinois, August-September, 1992 /

"IEPA/WPC/93-063."--Cover.

A method for determining drainage areas, flow distances, and civil areas for water quality subsegments in Illinois /

Cover title.

Analysis of water quality in the Galesburg Plain (McKee Creek, Lamoine River, Sugar Creek, Spoon River, and Kickapoo Creek), Illinois /

Bibliography: p. 30-1 to 30-4.

Annual summary of water quality and biological investigations in Lake Shelbyville Basin.

"Annual report submitted to the U.S. Army Corps of Engineers, St. Louis District, St. Louis, Missouri."

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

"November 1986."

Fox River Watershed investigation : Stratton Dam to the Illinois River, phase II : hydrologic and water quality simulation models, part 1, methodology and procedure for development of HSPF models /

"May 2007"--T.p.

Illinois Conference on Soil Conservation and Water Quality : conference proceedings of November 9-10, 1983 at Holiday Inn East, Springfield, Illinois /

Includes bibliographical references.

Lake water quality assessment program : northeastern Illinois lakes /

"The Northeastern Illinois Planning Commission's Natural Resources Dept. conducted the lake assessment data collection effort for the six county northeastern Illinois region." -- P. iii.

Lake water quality assessment program, 1993 : northeastern Illinois lakes /

"January 1995."

Section 208 water quality management planning work plan and budget : summary.

Cover title: Water quality management planning.

Station locations and periods of record, IEPA ambient water quality monitoring network /

Mode of access: Internet.

The Influences of land uses and stream modifications on water quality in the streams of the Court Creek Watershed /

"Contract WR 22."

Water quality and biological investigations in the Lake Shelbyville, Illinois Basin.

"Annual report submitted to the U.S. Army Corps of Engineers, St. Louis District, St. Louis, Missouri."