Electrical Resistivity for Estimating Ground‐Water Recharge

Abstract
In the unsaturated zone, fine-grained soils tend to exist in situ at higher degrees of saturation than coarse-grained soils. As a result, fine-grained soils generally will exhibit lower resistivities than coarse-grained soils. On this basis, empirical relations between recharge rates and electrical resistivities measured with surface techniques can be developed. An example using published data is given.