It is estimated that the amount of water in Yemen required during the next decade to meet the growing demand will be about 4.5 billion cubic metres (BCM). The water deficit in 2000 was 700 million cubic metres (MCM), rose to 900 MCM in 2010 and is expected to reach 2,500 MCM in 2025.

The combination of high population growth and exhaustion of water resources has contributed to a water crisis that may be one of the most catastrophic the world has ever seen