1. Headward erosion
It takes place when the river cuts back upstream of the valley above it's original source
2. Vertical erosion
This is the down cutting of the river channel through hydraulic action, abrasion and solution processes
3. Lateral erosion
This is erosion that affects the sides of the river resulting in widening of the river channel.
Faimus answered the question on January 6, 2018 at 12:39
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