Natural His-
tory Survey, Special publication 15, 88 p.
Suter, Max, Bergstrom, R.E., Smith, H.F., Emrich, G.H., Walton, W.C., and Larson, T.E., 1959, Preliminary report on
ground-water resources of the Chicago region, Illinois: Illinois State Geological Survey,Cooperative Ground-
Water Report 1-S, 17 p.
Talkington, L.M., 1991, The Illinois River—working for our State: Illinois State Water Survey, MiscellaneousPubli-
cation 128, 51 p.
U.S. Army Corps of Engineers, 1974, Charts of the Illinois waterways from Mississippi River at Grafton, Ill., to Lake
Michigan at Chicago and Calumet Harbor,unpaginated.
U.S. Department of the Air Force, 1989, Draftenvironmental impact statement for the closure ofChanute Air Force
Base: San Antonio, Tex., AirTraining Command, Randolph Air Force Base,September, 1989, unnumbered.
U.S. Department of Commerce, 1971, 1970 Census ofpopulation—Illinois: Bureau of Census, August 1971, 51 p.
———1982, 1980 Census of population—Illinois: Bureau of Census, February 1982, 81 p.
———1992, 1990 Census of population—Illinois:Economics and statistics administration, Bureau of Census, June
1992, 784 p.
Walker, W.H., Bergstrom, R.E., and Walton, W.C., 1965, Preliminary report on the ground-water resources of the
Havana region in west-central Illinois: Illinois State Water Survey Cooperative Ground-Water Report 3,61 p.
Walton, W.C., 1965, Ground-water recharge and runoff in Illinois: Illinois State Water Survey, Report ofInvestigation
48, 55 p.
Warner, K.L., and Schmidt, A.R., 1994, National water- quality assessment—the lower Illinois River Basin:U.S. Geo-
logical Survey Fact Sheet 94–018, 2 p.
Wendland, Wayne, and Dennison, Jean, 1993, Weather and climate impacts in the Midwest: Midwestern Climate Cen-
ter, Illinois State Geological Survey, vol. IV,no. 1, 4 p.
Wicker, T.L., Zuehls, E.E., LaTour, J.K., and Maurer, J.C., 1995, Water resources data—Illinois water year 1994: U.S.
Geological Survey Water-Data Report IL-94-2, 273 p.
Willman, H.B., 1973, Geology along the Illinoiswaterway—a basis for environmental planning: Illinois State Geo-
logical Survey Circular 478, 48 p.
Willman, H.B., Atherton, Elwood, Buschbach, T.C.,Collinson, Charles, Frye, J.C., Hopkins, M.E.,Lineback, J.A.,
and Simon, J.A., 1975, Handbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.
Willman, H.B., and Frye, J.C., 1970, Pleistocene stratigraphy of Illinois: Illinois State Geological SurveyBulletin 94,
204 p.
Willman, H.B., and others, comps., 1967, Geologic map of Illinois:Illinois State Geological Survey, scale 1:500,00,
1 plate.
Wilson, S.D., Kempton, J.P., and Lott, R.B., 1994, The Sankoty-Mahomet aquifer in the confluence area of the Mack-
inaw and Mahomet Bedrock Valleys, centralIllinois: Illinois Department of Energy and Natural Resources,
Cooperative Ground-water Report 16, 64 p.
Zeizel, A.J., Walton, W.C., Sasman, R.T., Prickett, T.A., 1962, Ground-water resources of DuPage County,Illinois:
Illinois State Geological Survey Cooperative Ground-Water Report 2, 103 p.
Zuehls, E.E., 1987, Hydrology of area 27, eastern region, interior coal province, Illinois: U.S. Geological Survey
Open-File Report 84–707, 62 p.
———1991, Illinois—floods and droughts inPaulson, B.W., Chase, E.B., Roberts, R.S.,and Moody, D.W. comps.,
National watersummary 1988–89—Hydrologic events andfloods and droughts: U.S. Geologica
l SurveyWater-
Supply Paper 2375, p. 263–270.
Zuehls, E.E., Fitzgerald, K.K., and Peters, C.A., 1984, Hydrology of area 28, eastern region, interior coalprovince,
Illinois: U.S. Geological Survey Open-File Report 83–544, 67 p.
Zuehls, E.E., LaTour, J.K., and Wicker, T.L., 1994,Water resources data—Illinois water year 1993:U.S. Geological
Survey Water-Data Report IL-93-2, 297 p.
Zuehls, E.E., Ryan, G.L., Peart, D.B., and Fitzgerald, K.K., 1981, Hydrology of area 25, eastern region, interior coal
province, Illinois: U.S. Geological SurveyOpen-File Report 81–636, 66 p.
