Geology and groundwater potential at Felda Chiku 05, Paloh, Gua Musang, Kelantan

Research entitled Geology and Groundwater potential was carried out at Felda Chiku 05, Paloh. The research area was located at Gua Musang district. Since the demand of groundwater had increased for agriculture activity and drinking source, exploring groundwater potential areas for new extraction wells are extremely important to meet the demand of water. The purpose of the research is to update the geological map of the study area with scale of 1:25,000 and to identify the groundwater potential using Electrical Resistivity Imaging (ERI) method. The main lithology of the study area was marble. In exploring groundwater potential area, 3 survey lines were used. For the first and second survey line, Gradient electrode arrangement was used while for third line was Pole - Dipole array with electrode spacing 5 meters for 200 meters line spread for survey. The ABEM Terrameter LS was used to obtain resistivity and induced polarisation data. Following data collecting, the operation moves on to data processing and inversion with the RES2DINV programme. By projecting the resistivity and IP values on a 2 D profile and analysing the processed data, the potentially shallow groundwater exists along survey line 1. The potential for shallow groundwater was shown to be impacted by coarse-grained sand along survey line 2. Survey line 3's model section results shows that the groundwater may be present at a depth of 20 and 45 metres below sea level. It has been demonstrated that geophysical surveys and geological mapping are effective ways to identify groundwater potential zones. The development of the water supply in the future is greatly aided by this study effort.