Fayette County surface water resources /

"January, 1968."

Hamilton County surface water resources /

"April, 1969."

Henry County surface water resources /

"April, 1969."

Hydrogeologic evaluation of sand and gravel aquifers for municipal groundwater supplies in East-Central Illinois /

"Prepared in cooperation with the Illinois Department of Transportation. Division of Water Resources."

Jo Daviess County surface water resources /

"June, 1971."

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."

Kane County surface water resources /

"April 1968."

Kankakee County surface water resources /

"March, 1968."

Livingston County surface water resources /

"March, 1969."

McHenry County surface water resources /

Bibliography: p. 69-71.

Madison County surface water resources /

"January, 1970."

Menard County surface water resources /

"February, 1969."

Morgan County surface water resources /

"March, 1970."

Ogle County surface water resources /

"April, 1968."