Current water stress in major river basins of the world Huang-Ho (Yellow) Basin,China Key Low WSI <0.3 03-0.4 04-05 0.5.0. 898 7 898 Orange River Basin. High WSI >=1 Africa Murray-Darling Bas No discharge Australia Major river basins As demands for water escalate,water-stressed river basins will increase in both number and severity Source:V.Smakhtin,C.Revenga and P Doll.2004 Current water stress in major river basins of the world As demands for water escalate, water-stressed river basins will increase in both number and severity Source: V. Smakhtin, C. Revenga and P. Döll. 2004