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flow measurement (injection test),
16
lithological observation, etc. were also
carried out in these bore wells. Results of these studies have been compared
with the results obtained by EC logs. These results very clearly show that
the depth of fractures/water bearing rocks obtained by EC logs technique
are more or less comparable with the above-mentioned techniques studied
(Tables 1-3).
5. Conclusions
Results obtained by EC logs have been found in good agreement with other
geophysical and geological findings for identifying the water bearing rock
formation and fractured rock in shallow bore well of hard rock areas. This
method is quick and cost effective with fairly good precision and has ver-
ified by comparing several kinds of investigations. EC logs of a bore well
also supplied information about the water table (precise), temperature and
electrical conductivity at different depths, information about recharge and
discharge of groundwater zones, electrical conductivity at any depth and
preliminary information about the chemical quality of water. In addition
to this also gives useful information about the saturation, super saturation,
and under saturation conditions of aquifer formation/bottom depth of the
bore well.
Acknowledgments
Authors wish to thank Dr. V. P. Dimri, Director, NGRI, Hyderabad, India
for his moral support and his permission to publish this paper.
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