Biological and water quality survey of the Vermilion River Vermilion County, Illinois, 1994 /

"May 1995."

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

"November 1986."

Geology, hydrogeology, and water quality of the karst regions of southwestern Illinois and Southeastern Missouri /

"33rd annual meeting, April 1999 North-Central section, Geological Society of America" --cover.

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.

Fox River Watershed investigation : Stratton Dam to the Illinois River, Phase II : hydrologic models and water quality simulation models, part 2 : Blackberry and Poplar Creek HSPF models, calibration and initial simulation results /

"June 2007."

Fox River Watershed Investigation : Stratton Dam to the Illinois River : Phase II : Blackberry Creek and Poplar Creek hydrologic and water quality simulation models : executive summary.

"June 2007."

Fox River watershed investigation, Stratton Dam to the Illinois River : water quality issues and data report to the Fox River Study Group, Inc. /

CD-ROM includes corresponding database and GIS datasets.

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

Includes bibliographical references.

Illinois integrated water quality report and section 303(d) list ... : water resource assessment information and listing of impaired waters.

Mode of access: Internet.

Main report, environmental, economic, and social assessment of the Statewide Water Quality Management Plan : 208 Water Quality Management Planning Program /

"Prepared for the Illinois Institute of Natural Resources and the Illinois Environmental Protection Agency"--Cover

Responsiveness summary : United States Army Corps of Engineers : Waukegan Harbor, Lake County, Illinois : Section 401 water quality certification for dredging of the Waukegan Harbor approach channel and advanced maintenance area.

The approved project allows the Corps to dredge the Waukegan Harbor approach channel and advanced maintenance area. The area to be dredged lies immediately east of the north breakwater. It is approximately a rectangle 650 feet north and south and 1,400 feet east and west. The advanced maintenance area is a band along the north side of the channel. The approved project is for a 10-year certification, under which the Corps may remove 22,000 to 75,000 cubic yards of sediment per dredging event. The dredging depth is 22 feet and the amount to be dredged is about one foot of sediment. As a condition of the certification, disposal of the dredged sediment in Lake Michigan or the waters of the state cannot occur until the conditions of the certification are met. These conditions, which have been placed on the certification by Illinois EPA, ensure that the project meets state water quality standards and is consistent with the determinations of the Illinois Attorney General's Task Force on asbestos contamination at Illinois Beach State Park.

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 effects of hydrologic modifications on aquatic biota, stream hydrology and water quality : a literature review /

"IEPA/WPC/84-001."-- Cover.

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."