Groundwater Level Measurement through the Earth Resistance Variation

Abstract

The paper proposes the method of measuring groundwater levels through variations of the earth resistance. The earth resistance varied by two to forty times between above and below the groundwater level. Therefore, the groundwater level can be revealed regardless of permeability of soil from variations of the earth resistance continuously measured with electrodes installed into the ground. The proposed method has the following advantages over conventional methods of measuring groundwater levels. 1. A water standpipe is not required. 2. The groundwater level can be measured without waiting time even in cohesive soils. 3. The method can be adopted alone as well as along with the soil investigation. The groundwater level can be economically measured in a short time by the proposed method regardless of soil types compared with the conventional methods.