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- Negev (Israel) 4
- Rain and rainfall 3
- Agriculture 2
- Arid regions 2
- Precipitation (Meteorology) 2
- Technology 2
- Water--Storage 2
- Watersheds 2
- Aquifers 1
- Climate 1
- Deserts 1
- Droughts 1
- Floods 1
- Groundwater 1