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Drought                                              A drought refers to a temporary water shortage which starts with reduced levels of precipitation compared to normal (meteorological drought). A drought may then propagate to reduced levels of soil moisture on agricultural land (agricultural drought), reduced levels of natural water flows to surface and groundwater (hydrological drought), and reduced capacity of water resources systems to supply adequate water to water users to meet their normal demands, thus causing losses and damages to socio-economic activities (socio-economic drought). The propagation from one stage to the other is not immediate. There are different lag times before the next stage happens and the capacity to mitigate the propagation depends on the preparedness of each society and the sophistication of its water technology. The duration of droughts may also vary from shorter to prolonged periods of droughts.