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."

Piatt County surface water resources /

"January, 1968."

Perry County surface water resources /

"March, 1969."

Randolph County surface water resources / by Donald M. Garver.

Mode of access: Internet.

Saline County surface water resources /

Includes bibliographical references (p. 48-49).

Schuyler County surface water resources /

"May, 1969."

Scott County surface water resources /

"January, 1970."

Sangamon County surface water resources.

Bibliography: p. 55-56.

Stark County surface water resources.

Bibliography: p. 40-41.

Washington County surface water resources /

"February, 1970."

Wayne County surface water resources /

"February, 1968."