Electrical resistivity surveys offer many benefits to environmental geophysics and engineering projects. Electrical resistivity test are used to determine the ability of a location’s soil and rock to ground an electrical system. Resistivity imaging is used to process a geoelectric survey, which delineates the differing electrical conductivity with depth and imaging can be used to locate environmental contamination, water leaching through a dam or other changes in resistivity. In karst landscapes, resistivity imaging can detect anomalies that may lead to sinkholes. Self-potential surveys can be used to delineate locations where water is passing through a structure. This may be a dam that is leaking and could lead to failure or a water impoundment that is leaking into the groundwater. Conductivity surveys can be used to delineate the edges of former landfills as well as shallow environmental-contamination plumes.