Geophysical methods such as electrical resistivity measure conductivity changes that are directly linked to groundwater characteristics. These methods can be used to examine the depth of the water table, identify the fresh/salt water interface, examine groundwater flow pathways, and identify production zones for water supply. The benefit of using geophysical surveys in groundwater studies lies in their ability to provide continuous profiles which can “connect the dots” between field data obtained from monitor wells and soil sampling.
- Aquifer delineation (depth of water table, thickness of production zones)
- Identify groundwater flow pathways
- Characterize the groundwater quality (i.e. fresh/salt water)