Water Resources Management and Climate Change Adaptation in the Sana’a Basin, Yemen: Case Study

The main aim of this case study is to test the United Nations Environment Programme's MCA4climate policy-evaluation framework in a situation where policy options are interdependent. A secondary aim was to apply the framework under different climate scenarios and account for climate uncertainty. Yemen was chosen because it has pressing near-term problems with water management that need to be addressed in conjunction with any planning for adaptation to the effects of climate change. This report evaluates the relative merits of alternative water-sector adaptation options in Yemen and selects a set of eight options for analysis, including three basin-wide options, three focused on the urban water sector, and two focused on rural agricultural water use.