"We know that effective water diplomacy and development aid can save millions of lives and help the countries develop sustainability and peacefully. Two of the world's greatest river basins - the Ganges and the Brahmaputra capture water from east and northeast India, Bangladesh, Bhutan, Nepal and China," Hall said at a programme here to mark World Water Day.
Working together across national and state boundaries to manage water use is critical to regional development, he added.
A day-long awareness session was held at the American Centre here on issues related to water.