主题词：Groundwater and Watershed Analysis; Groundwater and Isotope Geochemistry; Adsorption and biosorption for pollutant removal; Water Quality and Pollution Assessment; Hydrology and Watershed Management Studies; Flood Risk Assessment and Management; Hydrological Forecasting Using AI; Groundwater flow and contamination studies; Water resources management and optimization; Membrane Separation Technologies; Heavy metals in environment; Nanomaterials for catalytic reactions; Wastewater Treatment and Reuse; Hydrology and Drought Analysis; Water Systems and Optimization; Advanced oxidation water treatment; Water Quality Monitoring and Analysis; Advanced Photocatalysis Techniques; Hydraulic flow and structures; Geophysical and Geoelectrical Methods; Water Quality Monitoring Technologies; Water-Energy-Food Nexus Studies; Hydrology and Sediment Transport Processes; Geochemistry and Geologic Mapping; Arsenic contamination and mitigation