ISSN:
1745-6584
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Energy, Environment Protection, Nuclear Power Engineering
,
Geosciences
Notes:
Illinois aquifers furnish approximately 233 mgd (10.2 m3/s) of water to 677 public-water supplies outside the six-county area of northeastern Illinois. Ground water is usually obtained from sand-and-gravel deposits in the glacial drift or from limestone or sandstone formations in the underlying bedrock. The most favorable ground-water conditions are found in the northern third and the southern tip of the State, while, elsewhere, major aquifers are sand-and-gravel deposits of the Mississippi, Illinois, buried Mahomet, Wabash, Ohio, Kaskaskia, and Embarrass valleys.A brief review was made of data and information in the State Water Survey files for each public ground-water supply, and an assessment was given as adequate, marginal, or deficient, in terms of present demands. Twenty-four supplies were studied in greater detail, including calculations of aquifer sustained yields. The study indicated that 39 supplies were marginal and four were judged deficient in meeting current demands. The majority of the marginal and deficient supplies are located in the central third of the State; but so are most of the supplies (outside of north-eastern Illinois).The study represents the first of a three-part plan to: (1) define problem areas and determine priorities for studies in greater detail, (2) conduct regional studies, including test drilling, in problem areas to determine how great the water resource is, and (3) determine the water resource alternatives available to public ground-water supplies that are found to be inadequate.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1745-6584.1979.tb03353.x
