G. O. Balding

• Changes in chloride concentration in water from municipal wells that tap aquifers in rocks of Cambrian and Ordovician age in northeastern Illinois, 1915-84
• Data for wells in the Modesto-Merced area, San Joaquin Valley, California
• Data for wells in the Tracy-Dos Palos area, San Joaquin Valley, California
• Data on dye dispersion in a reach of the Sacramento River near Red Bluff, California
• Floods of September 26-October 4, 1986, and August 14-17, 1987, in Illinois
• Water availability, quality, and use in Alaska
• Water-resources activities of the U.S. Geological Survey in Illinois, 1992
• Water-resources activities of the U.S. Geological Survey in Illinois, 1993
• Water-resources activities of the U.S. Geological Survey in Illinois, 1994