The rapid decline of groundwater levels (GWL) due to pervasive abstraction in the densely populated (~1 billion) Indus-Ganges-Brahmaputra-Meghna (IGBM) transboundary river basins South Asia, necessitates a robust framework prediction and understanding. While few localized studies exist, three-dimensional regional-scale characterization GWL is yet be implemented. Here, ‘support vector machine’, ...