The dataset provides first level river basin boundaries of ten major river basins in the Hindu Kush Himalaya (HKH) region – the Amu Darya, Brahmaputra (Yarlungtsanpo), Ganges, Indus, Irrawaddy, Mekong (Lancang), Salween (Nu), Tarim (Dayan), Yangtse (Jinsha), and the Yellow River (Huanghe). In addition, it also includes boundaries of two interior river basins. The dataset has been developed from NASA’s 90m resolution Shuttle Radar Topography Mission (SRTM) digital elevation model.