. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. STREAMFLOW CONDITIONS. FLOODING. AND LOW FLOWS Table 10. Streamgages Used to Analyze Impacts of Major Reservoirs Watershed drainage Period of Gage # Location area (mi2) record Reservoir 05550000 Fox River at Algonquin 1,403 1915-1991 Fox Chain of Lakes 05573540 Sangamon River at Decatur 938 1982-1991 Lake Decatur 05578500 Salt Creek near Rowell 335 1943-1991 Clinton Lake 05592000 Kaskaskia River at


. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. STREAMFLOW CONDITIONS. FLOODING. AND LOW FLOWS Table 10. Streamgages Used to Analyze Impacts of Major Reservoirs Watershed drainage Period of Gage # Location area (mi2) record Reservoir 05550000 Fox River at Algonquin 1,403 1915-1991 Fox Chain of Lakes 05573540 Sangamon River at Decatur 938 1982-1991 Lake Decatur 05578500 Salt Creek near Rowell 335 1943-1991 Clinton Lake 05592000 Kaskaskia River at Shelbyville 1,054 1941-1991 Lake Shelbyville 05592500 Kaskaskia River at Vandalia 1,940 1915-1991 Lake Shelbyville 05593000 Kaskaskia River at Carlyle 2,719 1938-1991 Carlyle Lake 05597000 Big Muddy River at Plumfield 794 1915-1991 Rend Lake 05599500 Big Muddy River at Murphysboro 2,169 1931-1991 Rend Lake 10000. "i—i—i—i—i—i—i—i—i—i—i—i—i—i—r 10 25 50 75 90 PROBABILITY OF EXCEEDANCE, percent Figure 12. Lake Decatur inflow and outflow. 137. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Dept. of Energy and Natural Resources; Critical Trends Assessment Project. Springfield, Ill. : Ill. Dept. of Energy and Natural Resources


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