A wadi can be recognized by its braided appearance, which is caused by a lack of constant water flow and an excess of sediment build-up. Sometimes, this sediment may collect in significant amounts, blocking water flow and effectively changing the direction of seasonal rivers.

What is a wadis in geography?

1 : the bed or valley of a stream in regions of southwestern Asia and northern Africa that is usually dry except during the rainy season and that often forms an oasis : gully, wash.

What is a wadi in desert?

A WADI IS A RAVINE or gully in the MIDDLE EAST or northern Africa that is dry for most of the year. The word wadi means “valley” or “ravine” in Arabic. ... Wadis are usually found in DESERTs, which are generally considered to be areas that have less than 10 in (250 mm) of precipitation a year.