ABSTRACTThe geoelectrical resistivity method, in conjunction with a few seismic refraction profiles, is used to locate permeable strata for the artificial recharge of ground water. Both Schlumberger and Wenner electrode configurations are used in carrying out the resistivity measurements. Possibilities and limitations in the interpretations of some sounding curves are discussed. An attempt to interpret (horizontal) resistivity profiles in terms of theoretical profiles over hemispherical sinks is included.The results of the seismic refraction profiles seem to show that, within the depth of interest, the alluvial strata lack a good elastic differentiation. On the other hand, the resistivity measurements have indicated the presence of buried stream channels. The discovery of one such channel is confirmed by later drilling and a good correlation is shown between geoelectrical predictions and geologic findings. It is shown that the construction of isoresistivity maps can greatly contribute to the successful performance and interpretation of electrical soundings.
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