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Browse Reports of Investigation - Illinois State Water Survey by Issue Date
Now showing items 41-60 of 125
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(Illinois State Water Survey, 1961)
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(Illinois State Water Survey, 1961)
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(Illinois State Water Survey, 1962)
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(Illinois State Water Survey, 1962)
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(Illinois State Water Survey, 1963)
Systematic measurements of ground-water levels in Illinois were started in the early 1930’s in the Chicago region. Measurements were made in 1961 in 220 observation wells in 42 counties throughout the state.
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(Illinois State Water Survey, 1963)In northern Illinois large quantities of ground water are withdrawn from wells in shallow dolomite aquifers of Silurian and Ordovician age. The Niagaran and Alexandrian Series of Silurian age and the Galena-Platteville ...
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(Illinois State Water Survey, 1964)
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(Illinois State Water Survey, 1965)Recharge conditions in several areas of northeastern Illinois are described, and recharge rates for several aquifers in central and southern Illinois are given. Recharge rates to deeply buried bedrock and sand-and-gravel ...
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(Illinois State Water Survey, 1965)
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(Illinois State Water Survey, 1965)
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(Illinois State Water Survey, 1965)
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PDF (19MB)
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(Illinois State Water Survey, 1966)
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(Illinois State Water Survey, 1966)
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(Illinois State Water Survey, 1966)
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(Illinois State Water Survey, 1966)
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(Illinois State Water Survey, 1967)
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(Illinois State Water Survey, 1967)
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(Illinois State Water Survey, 1967)Large supplies of groundwater are developed from the Cambrian-Ordovician aquifer in La Salle County for municipal and industrial use. Yields of wells normally exceed 500 gpm. Pumpage was 11.2 mgd in 1963. Municipal wells ...
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(Illinois State Water Survey, 1968)
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PDF (659kB)
Now showing items 41-60 of 125