EVALUATION OF GROUNDWATER STORAGE CHANGES USING SATELLITE GRAVIMETRY MISSION IN PENINSULAR MALAYSIA

Abstract. Water stored beneath the Earth’s surface, known as groundwater is a major water supply for living things. The increase in human population leading to high urban development and industrial needs Malaysia has made use of more critical. current issue faced by limitation freshwater source from dam resulting increasing demand gather fresh groundwater; hence, crucial exploitation groundwater. Therefore, this study aims evaluate storage (GWS) using Gravity Recovery Climate Experiment (GRACE) Global Land Data Assimilation System (GLDAS) data Peninsular Malaysia. GRACE consist information on liquid equivalent thickness covering terrestrial (TWS) GWS, soil moisture (SM), snow (SWE), surface (SW). In comparison with GLDAS data, they only hydrological products SM, SWE, SW. differences between are most likely reflect GWS. Due seasonal monsoon, changes GWS can also be seen specific months. addition, used identify important areas that need improvement attention. output expected help authorities monitoring recharge discharge future preservation quality. Moreover, excessive observed prevention land hazard phenomena, such subsidence.