Geology and evaluation of groundwater sources using Electrical Resistivity Imaging (ERI) in Lojing, Gua Musang

Lithology of the study area is metamorphic rock which is schist and the parent rock for schist is sedimentary rock. Schist has a characteristic that not suitable for groundwater accumulation between grains, therefore the groundwater may located at the fracture zone. Based on the lithology, this final year project has been conducted to evaluate the possibility of groundwater existence using Electrical Resistivity Imaging (ERI) method. In Kelantan, it used both groundwater and surface water treatment as their main resources for daily uses. However, continuous extraction of groundwater can causes depletion and continuous contamination of river can reduce the quality of water treatment. Therefore, new sources of groundwater is needed to support the water storage. To determine the potential of groundwater in the study area, a geophysical survey using Electrical Resistivity Imaging (ERI) method has been conducted. Based on the results of the ERI, the study area is a high potential of groundwater that located in the subsurface. ERI results shows that the subsurface consist of low resistivity material such sedimentary that can store groundwater in a large volume. As a conclusion, the lithology of this study area can be a zone for groundwater accumulation.