WP-2 develops regional MODFLOW simulations to understand coastal saline-intrusion dynamics and groundwater availability for irrigation. It provides the subsurface hydrological layer for the Digital Twin, enabling scenario analysis for sustainable water extraction.
Scientific Objectives
Quantify regional groundwater availability and recharge rates across the pilot study areas.
Simulate coastal saline-intrusion dynamics under varying climate and extraction scenarios.
Develop high-resolution MODFLOW models integrated with the WebAIS platform.
Evaluate the impact of improved irrigation management on groundwater levels and quality.
Execution Framework
T1. Hydrogeological Characterization
Baseline assessment of aquifer properties and regional geological structures.
- Consolidation of existing Geological log data from BADC and other agencies.
- Analysis of regional aquifer connectivity and hydraulic properties.
- Spatial mapping of groundwater salinity gradients in coastal zones.
- Development of a 3D geological conceptual model for the target regions.
T2. Numerical Groundwater Modeling
Construction and calibration of high-fidelity MODFLOW models.
- Setup of regional groundwater flow models using MODFLOW-6.
- Calibration against historical water level observations from monitoring wells.
- Implementation of variable-density flow simulations for saline-intrusion analysis.
- Validation of model results against independent field measurements.
T3. Scenario and Impact Analysis
Evaluation of the impact of climate change and management strategies.
- Simulation of groundwater response to future climate stress scenarios.
- Evaluation of different pumping strategies for sustainable irrigation.
- Assessment of saline-front mobility under sea-level rise projections.
- Identification of high-risk zones for groundwater depletion or salinization.
Project Milestones
Regional hydrogeological database and conceptual 3D model established.
Calibrated groundwater flow models operational for high-priority pilot regions.
Saline-intrusion dynamics quantified and mapped for coastal study areas.
Groundwater scenario results integrated into the WebAIS Digital Twin platform.
