The subject of this paper is research into the application of electrical resistivity monitoring to detecting the water leakage of embankments. For this purpose, we installed a monitoring system of electrical resistivity measurement at embankments of a reservoir and a sea dyke. Using this monitoring system, we repeatedly obtained electrical resistivity data in order to investigate the water leakage of embankments. The variant images of electrical resistivity at the embankment were provided from the monitoring data and we could accurately locate the portion of which electrical resistivities have sharply changed. The electrical resistivity monitoring experiments in this study led us to the conclusion that for the efficient maintenance of the embankment, monitoring the electrical resistivity data would be much more preferable to performing the just one-time electrical resistivity measurements.
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