]], Israel]] This article is about an Arabic term for valleys or dry riverbeds. For other uses of 'Vadi' see: Vadi . Wadi ( ) (also: Vadi) is traditionally a valley. In some cases it can refer to a dry riverbed that contains water only during times of heavy rain. Compare arroyo , canyon, gulch, wash and gully. The term is very widely found in Arabic toponyms. Wadis tend to be associated with centers of human population because sub-surface water is sometimes available in wadis. Crossing wide wadis at certain times of the year can be dangerous, because of unexpected flash floods. Such flash floods cause many deaths each year in Saudi Arabia and many other Middle Eastern countries. In North Africa the French transcription oued is used. In southwestern Africa, the term rivier is used, which is the Afrikaans word for "riv

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