If water is to be managed in a sustainable way, the planners and managers must know how much there is and how much of it is needed, particularly in arid and semi-arid regions. The report provides the guidance, methods, data, and analyses needed to assess water availability and needs in micro...

Significant progress in seawater desalination technology has lowered its costs considerably, making it an attractive option to policy makers in countries facing water shortages. However, in making the decision to implement desalination, two issues are often ignored: firstly, seawater...