GIS-Based Groundwater Vulnerability and Quality Assessment Using the DRASTIC Model for Sustainable Irrigation Management in the Carmen-Toledo-Compostela Corridor, Cebu, Philippines

1. Introduction 2. Literature Review 2.1. Groundwater Vulnerability Concepts 2.2. Overview of the DRASTIC Model 2.3. GIS Applications in Hydrology 2.4. Sustainable Irrigation Practices 3. Study Area Description 3.1. Geographic and Climatic Overview 3.2. Socio-Economic Aspects 3.3. Geological Features 3.4. Current Water Resource Management 4. Methodology 4.1. Data Collection Techniques 4.2. Application of the DRASTIC Model 4.3. GIS Software Utilization 4.4. Data Analysis Procedures 5. Results and Discussion 5.1. Groundwater Vulnerability Mapping 5.2. Quality Assessment of Groundwater 5.3. Analysis of GIS Outputs 5.4. Comparison with Existing Studies 6. Implications for Sustainable Irrigation 6.1. Integrating Findings into Irrigation Management 6.2. Policy Recommendations 6.3. Long-Term Monitoring Strategies 6.4. Community Engagement and Education 7. Challenges and Limitations 7.1. Data Availability Issues 7.2. Limitations of the DRASTIC Model 7.3. GIS Analysis Limitations 8. Conclusion and Future Work 8.1. Summary of Key Findings 8.2. Suggestions for Future Research 8.3. Potential Improvements in Methodology