ternary deposits on Illinois, in
Bergstrom, R.E. ed., The Quaternary of Illino
is: a symposium of the
centennial of
the University of Illinois, p. 157–159.
Curry, B.B., and Seaber, P.R., 1990, Hydrogeology of
shallow groundwater resources, Kane County, Illinois:
Illinois
State Geological Survey Contract Grant
Report 1990–1, 37 p.
Demissie, Misganaw, Keefer, Laura, and Xia, Renjie, 1992, Erosion and sedimentation in the Illinois River Basin: Illi-
nois State Water Survey, ILENR/RE-WR-92/04,
112 p.
Fehrenbacher, J.B., Walker, G.O., and Wascher, H.L., 1967, Soils of Illinois: Urbana, Ill., University of Illinois
College
of Agriculture, Agricultural Experiment
Station, and Soil Conservation Service, 47 p.
Gibb, J.P., and O’Hearn, Micheal, 1980, Illinois
ground-water quality data summary: Illinois
State Water Survey,
Summary for contract
number 1-47-26-84-353-00, 60 p.
Goetsch, W.D., McKenna, D.P., and Bicki, T.J., 1992, Statewide survey for agricultural chemicals in rural, private
water-supply wells in Illinois: Springfield, Ill., Bureau of Environmental Programs, Illinois Department of
Agri-
culture pamphlet, 4 p.
Hansel, A.K., and Johnson, H.W., 1996, Wedron and Mason Groups—lithostratigraphic reclassification of deposits of
the Wisconsin Episode, Lake Michigan lobe area: Illinois State Geological Survey Bulletin 104, 116 p.
Herzog, B.L., Warner, K.L., Stiff, B.J., Sieverling, J.B.,
Chenoweth, C.A., and Avery, C.F., 1994, Buried
bedrock sur-
face of Illinois: Illinois State Geological Survey, Illinois Map 5, 1:500,000 scale.
Hitt, K.J., 1994, Refining 1970’s land-use data with 1990 population data to indicate new residential
development:
U.S. Geological Survey Water-Resources Investigations Report 94–4250, 15 p.
Horberg, Leland, 1950, Bedrock topography of Illinois:
Illinois State Geological Survey Bulletin No. 73, 111 p.
Horberg, C.L., and Anderson, R.C., 1956, Bedrock topog-raphy and Pleistocene glacial lobes in central United States:
Journal of Geology, v 64, no. 2, p. 101–116.
Huntzinger, T.L., and Ellis, M.J., 1993, Central Nebraska River basins—Nebraska: Water Resources Bulletin,
v. 29,
no. 4, p. 533–574.
Illinois Department of Conservation, 1991, A directory of Illinois nature preserves: Springfield, Ill., Division of Natu-
ral Heritage, 382 p.
Illinois Department of Energy and Natural Resources and The Nature of Illinois Foundation, 1994, The changing Illi-
nois environment—critical trends: Springfield, Ill., Summary Report of the Critical Trends Assessment Project,
Department of Energy and Natural Resources, 89 p.
Illinois Department of Natural Resources, 1996, Illinois
land cover—an atlas: Springfield, Ill., Critical Trends Assess-
ment Project Phase II, Department of Natural Resources, 157 p.
Illinois Natural History Surve y, 1994, The changing Illinois environment—critical trends: Technical Report of the Crit-
ical Trends Assessment Project, Volume 3— Ecological Resources, ILENR/RE-EA-94/05(3), 242 p.
Iverson, L.R., Oliver, R.L., Tucker, D.P., Risser, P.G.,
Burnett, C.D., and Rayburn, R.G., 1989, The forest resources of
Illinois—an atlas and analysis of spatial and temporal trends: Illinois Natural History Survey
Special Publication
11, 181 p.
Iverson, L.R., Rolfe, G.L., Jacob, T.J., Hodgins, A.S., and Jeffords, M.R., 1991, Forests of Illinois: Champaign, Ill.,
Illinois Council on Forestry Development, Urbana, and Illinois Natural History Survey, 24 p.
Johnson, H.W., Moore, D.W., and McKay, E.D., 1986,
Provenance of late Wisconsinan (Woodfordian) till and origin
of the Decatur sublobe, east-central Illinois:
Geological Society of America Bulletin, v. 97,
p. 109
8–1105.
Keefer, D.A., 1995, Potential for agricultural chemical
contamination of aquifers in Illinois—1995 revision: Illinois
State Geological Survey, Environmental
Geology 148, 28 p.
Keefer, D.A., and Berg, R.C., 1990, Potential for aquifer recharge in Illinois: Illinois State Geological Survey, map,
scale 1:1,000,000.
Kempton, J.P., Johnson, W.H., Heigold, P.C., and
Cartwright, Keros, 1991, Mahomet Bedrock Valley
in east-central
Illinois—topography, glacial drift
stratigraphy, and hydrogeology in geology and
hydrogeology
of the Teays-
Mahomet Bedrock Valley System: Geological Society of America, Special
Paper 258, p. 91–124.
Kempton, J.P., Morse, W.J., and Visocky, A.P., 1982,
Hydrogeologic evaluation of sand and gravel aquifers for munic-
ipal groundwater supplies in east-central
Illinois: Illinois Department of Energy Cooperative Groundwater
Report 8, 59 p.
Kempton, J.P., and Visocky, A.P., 1992, Regional ground-water resources in western McLean and eastern
Tazewell
Counties—with emphasis on the Mahomet Bedrock Valley: Illinois Department of Energy and
Natural
Resources, Cooperative Groundwater
Report 13, 41 p.