. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. CLIMATE TRENDS IN ILLINOIS. 1901 1911 1921 1931 1941 1951 1961 1971 1981 1991 Year Figure 6. Average annual snowfall in Illinois (inches). ow: 4S- 40 : 35] g 30] w 2o: 15i in- : : ^ . / \ 1^ p. ^y\ / ^ \^ /^ \ I V \T^ >^ w "^ Y 1 'J. 0- 1111 n n 1 j 111 111 r 11 j 1 111 1 r 1 r 1 11 n u 11 li I n run n niTTTTTr 1 1 1 1 1 1 M 1 IiniTITT m 1II1II 1901 1911 1921 1931 1941 1951 1961 1971 1981 19
. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. CLIMATE TRENDS IN ILLINOIS. 1901 1911 1921 1931 1941 1951 1961 1971 1981 1991 Year Figure 6. Average annual snowfall in Illinois (inches). ow: 4S- 40 : 35] g 30] w 2o: 15i in- : : ^ . / \ 1^ p. ^y\ / ^ \^ /^ \ I V \T^ >^ w "^ Y 1 'J. 0- 1111 n n 1 j 111 111 r 11 j 1 111 1 r 1 r 1 11 n u 11 li I n run n niTTTTTr 1 1 1 1 1 1 M 1 IiniTITT m 1II1II 1901 1911 1921 1931 1941 1951 1961 1971 1981 1991 Year Figure 7. Running five-year averages of Illinois annual snowfall (inches). 17. 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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