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Regional trends in water-well drilling in the United States

Circular 533

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and

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Abstract

Between the towns of Macon and Taylorville in central Illinois lies a ridge that is part of a system of ridges and knolls largely composed of sand and gravel. This ridge contains an important aquifer. An extensive electrical earth resistivity survey was conducted over the ridged-drift aquifer. Inversion of the resistivity data provided information concerning aquifer thickness and aquifer resistivity. This information, along with pump test data along the aquifer, indicated a direct and geometric relationship between aquifer resistivity and hydraulic conductivity. As a result, it was possible to better define the boundaries and water-producing capabilities of the aquifer. (Author 's abstract)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Regional trends in water-well drilling in the United States
Series title:
Circular
Series number:
533
Edition:
-
Year Published:
1966
Language:
ENGLISH
Publisher:
[U.S. Geological Survey],
Description:
8 p. :illus., maps. ;26 cm.