An Improved Groundwater Model Framework for Aquifer Structures of the Quaternary-Formed Sediment Body in the Southernmost Parts of the Mekong Delta, Vietnam

The Ca Mau peninsula (CMP) is a key economic region in southern Vietnam. In recent decades, the high demand for water has increased exploitation of groundwater, thus lowering groundwater level and leading to risks degradation, depletion, land subsidence, as well salinity intrusion whole Mekong Delta region. By using finite element model with boundary expansion sea, we updated latest data on hydrogeological profiles, levels, exploitation. basic setup covers seven aquifers aquitards. It determined that inflow along coastline mainland 39% total inflow. study area 2019 was 567,364 m3/day. most exploited are upper-middle Pleistocene (qp2–3) middle Pliocene (n22), accounting 63.7% 24.6%, respectively; least upper Miocene, 0.35% 0.02%, respectively. deeper aquifers, qp2–3 n22, change storage negative due rate, decline reserves these aquifers. These results calculations from coast entire system CMP. This makes decision managers, stakeholders, others more efficient sustainable resources planning CMP (MKD).