In the 1950s, the Illinois State Geological Survey published a series of circulars on the groundwater conditions of Illinois, intended to "provide the public with general information on groundwater principles and with regional information on groundwater availability."
Water wells for farm supply in central and eastern Illinois, a preliminary report on geologic conditions by
Publication Date: 1954ISGS Circular no. 192Groundwater possibilities in northeastern Illinois, a preliminary geologic report by
Publication Date: 1955ISGS Circular no. 198Groundwater geology in southern Illinois, a preliminary geologic report by
Publication Date: 1956ISGS Circular no. 212Groundwater geology in western Illinois, north part, a preliminary geologic report by
Publication Date: 1956ISGS Circular no. 222Groundwater geology in south-central Illinois, a preliminary geologic report by
Publication Date: 1957ISGS Circular no. 225Groundwater geology in western Illinois, south part, a preliminary geologic report by
Publication Date: 1957ISGS Circular no. 232Groundwater geology in east-central Illinois, a preliminary geologic report by
Publication Date: 1958ISGS Circular no. 248