USGS Fact Sheet 2007-3048

USGS Fact Sheet 2007-3048

Borehole Geophysical Logging of Water-Supply Wells in the Piedmont, Blue Ridge, and Valley and Ridge, Georgia

This report is available online in pdf format (1 MB): USGS FS 2007-3048 (Opens the PDF file in a new window. ).
Report available online only.

U.S. Geological Survey Fact Sheet 2007-3048, 4 pages (Published June 2007)

ABSTRACT

Crystalline and carbonate-rock aquifers in northern Georgia provide water to an ever-increasing number of private and public wells in the region. Understanding the depth and yield of water-bearing zones in such wells is crucial for the development and long-term sustainability of ground-water resources and for keeping wells in good operating condition. Portable geophysical logging units are now widely available and have greatly increased the ability of geoscientists to obtain subsurface information from water wells.


CONTENTS

What Is Borehole Geophysical Logging?

Why Log a Well?

Types of logging

Caliper

Natural gamma

Long- and Short-Normal and Lateral Resistivity

Fluid

Flowmeter

Camera

Optical televiewer

Geophysical Log Database

Summary

Selected References

 


REPORT AVAILABILITY

This report is available online in pdf format (1 MB): USGS FS 2007-3048 (Opens the PDF file in a new window. )
To view the PDF document, you need the Adobe Acrobat® Reader installed on your computer. (A free copy of the Acrobat® Reader may be downloaded from Adobe Systems Incorporated.)


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