Dry River Bed of a Seasonal River

Some rivers or streams, especially in Arid and Semi-Arid Lands (ASAL), are seasonal, intermittent, or temporary.

They experience water-flow in certain times of the year, when there are heavy rains and flooding.

In dry seasons, inflow of surface water in the seasonal rivers in insufficient.

In the desert or semi-desert environment, the water loss from the seasonal streams is high due to increasing evaporation rates.

The dry weather condition causes the river or stream to dry up naturally, and exposes the bottom part of the river channel.

The resultant geographical feature is a dry river bed, or dry stream bed, which floods in the next rainy season.

It is common for certain areas of major river systems to dry up for several days, weeks, months, or even years, depending on the level of rain and flood water inflows. 

Dry river bed exposes unique land features; for example, sand, mud, silt, rocks, roots of trees, and remains of aquatic plants.

These features of the dry river or stream bed are visible in dry seasons between the normal waterline and the bottom part of the river channel. 

Seasonal rivers are significant land-forming agents as they influence major erosion and deposition in flood environments.