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Publication Abstract

Ground-water Levels and Pumpage in the East St. Louis Area, Illinois, 1981 - 1985 Kohlhase, Robert C., 1987  Illinois State Water Survey, Champaign, IL,  ISWS C-168    Full Text Available

Ground-water levels and pumpage in the East St. Louis area from 1981 through 1985 are considered in this report. Large quantities of ground water chiefly for industrial and municipal use are withdrawn from wells penetrating a sand and gravel aquifer along the valley lowlands of the Mississippi River.

Ground-water pumpage increased from 54.4 million gallons per day (mgd) in 1981 to 60.1 mgd in 1985. Of the total 1985 pumpage, 73.1 percent was industrial; 18.2 percent was for public water supplies; 6.7 percent was for domestic use; and 2.0 percent was for irrigation. Pumpage in the East St. Louis area is concentrated in. five major pumping centers: the Alton, Wood River, Roxana, Granite City, and National City areas. Pumpage in the Sauget (Monsanto) area, once considered a major pumping center, has decreased sufficiently that it is now a minor pumping center.

Ground-water levels throughout the entire area generally increased from levels measured in 1980. Above-normal precipitation and above-mean stream levels most likely were the major causes of the elevated ground-water levels. The only distinguishable decline in ground-water levels was seen in the Collinsville area, where increased pumpage continues to further diminish water levels.

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