Linked from
The 82 pages that link to Drought, each with the reason it gives.
PrecipitationCompared with: A precipitation deficit is a common cause and indicator of drought.
FamineCompared with: Drought can contribute to famine, but it does not inevitably cause one.
AridificationCompared with: Drought is a temporary anomaly; aridification is a long-term shift.
StreamflowCompared with: Low streamflow is a key hydrologic expression of drought.