How do wadis differ from rivers?
Quick Answer
Wadis are usually dry channels that fill only after rain, while rivers flow more continuously. In desert climates, a wadi may be empty for most of the year.
The Full Story
A wadi is a valley or channel in a desert or dry region that carries water only intermittently. Unlike a perennial river, a wadi may remain dry for months or years until a storm or seasonal rainfall sends water through it. These channels can be wide and deeply cut, showing that they have been shaped by repeated flood events over long periods. Wadis are common across North Africa, the Arabian Peninsula, and parts of Southwest Asia. They often become important travel corridors, grazing areas, or temporary water sources after rain.
Key Facts
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