Factors Affecting River Channel Erosion

A river's erosive power depends on:

1. Water Discharge – volume and velocity; higher discharge = more erosion.
2. Sediment Load – amount and size of particles; more sediment = abrasive scouring.
3. Channel Slope – steeper gradient = faster flow = greater erosive energy.
4. Bank Resistance – soil cohesion, vegetation, bank angle; cohesive, vegetated banks resist erosion.
5. Channel Confinement – confined valleys increase velocity and energy.
6. Riparian Vegetation – roots stabilize banks, slow flow, absorb flood energy.
7. Channel Meandering – outer bends erode faster; inner bends deposit sediment.
8. Human Activities – deforestation, urbanization, agriculture alter sediment supply, vegetation, flow.