ALTERNATIVE APPROACH TO GROUNDWATER MODELING IN DATA-DEFICIENT REGIONS

Abstract

Groundwater modeling served as a valuable tool for understanding groundwater flow patterns and systems. In the lack of observational data region, the complexity of the groundwater aquifer posed challenges, limiting the accuracy of real-time predictions of groundwater levels. To address this problem, alternative approaches must be devised to effectively calculate groundwater flow and budget. This entails leveraging factors such as the environment, geological characteristics, as well as recharge and discharge areas to align with regional groundwater flow theories. In this study, a three-dimensional groundwater simulation model was employed to develop groundwater flow and budget using data available in 2023. The model calibration and validation processes demonstrated a close correspondence between observed and simulated hydraulic head data. Sensitivity analysis revealed that boundaries and recharge significantly influenced model outcomes. The water budget conducted under steady flow conditions highlighted the lateral groundwater inflow in the aquifer layer as a crucial recharge component. Additionally, groundwater flow from recharge to discharge zones emerged as a pivotal aspect, particularly in areas with intensive development activities. These findings held implications for groundwater management models, serving as indispensable tools for informed decision-making and alternative considerations.