Dams to restore water resources in the Jordanian dryland

Jordan will establish 15 desert dams with a total capacity of two million cubic metres in the northeastern badia (dryland)by 2013.The project aims to recharge groundwater resources and secure local communities with a permanent water supply.Vegetation in the desertic areas will be restored to favor pasture, the dams will be used for irrigation and livestock watering and the water will be treated for drinking: http://bit.ly/PIMPSjDo you think that such projects will rehabilitate desertic areas? Is this the right way to go? Which are the pros and cons?