Erosional Features of Rivers

Topic Content:

Erosion is the geological process where loose earth materials are worn away and transported by natural forces, such as water, wind or ice.

Here, we are concerned with the features which water erosion produces on the Earth’s surface.

The following features are produced by water erosion on the surface of the Earth:

• Gorges
• V-shaped valleys
• River capture
• Waterfall
• River cliff
• Meanders
• Rapids and cataracts
• Potholes

Gorges:

A gorge is a narrow, steep-sided valley with a river or stream flowing at the bottom. Gorges are usually formed by erosion , especially from fast-moving rivers that cut through hard rocks like limestone . As the river flows, it slowly wears away the rock, and the eroded materials are carried downstream.

Over time, this continuous erosion creates the deep, steep walls of a gorge. During floods , the river flows even faster and with more force, which increases the rate of erosion and makes the gorge deeper and wider . A good example is the Talari Gorges in Mali , which were formed by the Sénégal River as it flows towards the Atlantic Ocean on