
Despite academic recommendations of integrated water management and sustainable development among countries sharing trans boundary rivers to achieve social equity, economic growth, environmental and ecological protection, there is always misunderstanding and sometimes conflict among upper and lower riparian countries. There have been such problems in the Nile basin in Africa, Tigris and Euphrates in the Middle East, Aral Sea basin in Central Asia, Parana basin in South America and Ganges basin in Asia. The fact remains that a uniform mechanism/convention to manage trans boundary water resources does not exist. Some water related customary and general principles of international law have, however, become the basis of major international conventions, treaties and agreements for trans boundary water resources cooperative management.