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- Aswan High Dam (Egypt) 88
- Irrigation 19
- Agriculture 18
- Dams 15
- Politics and government 14
- Building 12
- Groundwater 12
- Hydrology 12
- Water consumption 12
- Water-power 12
- Barrages 11
- Droughts 10
- Soviet Union 10
- Water quality 10
- Nasser, Lake (Egypt and Sudan) 9
- Canals 8
- Finance 8
- Precipitation (Meteorology) 8
- Technology 8
- Watersheds 8
