With its economy based largely on agriculture, water is a critical resource for Pakistan. The country’s vast farm lands are supported by the largest contiguous irrigation system in the world – the Indus Basin Irrigation System. The system includes the Indus River and its tributaries, as well as a myriad of canals, watercourses, farm channels, and field ditches, and serves about 100 million people in the Indus region. If managed efficiently, there is enough water in the basin to support the livelihoods of those people. Water distribution and management are crucial issues.