River Transportation.

River Transport:

• Solution- Minerals are dissolved in the water and carried along in solution.

• Suspension-Fine light material is carried along in the water.

• Saltation: Small pebbles and stones are bounced along the river bed.

• Traction: Large boulders and rocks are rolled along the river bed.

• River Capacity: The capacity is the maximum load a river can transport. Capacity will also increase with increasing discharge and velocity.

• River Competence:The competence of a river is the maximum particle size that it is able to transport. The velocity of the river increases it is able to transport larger particles and so its competence increases.

Why does deposition occur?

Deposition may take place when a river enters an area of shallow water or when the volume of water decreases - for example, after a flood or during times of drought. Deposition is common towards the end of a river's journey, at the mouth. Deposition at the mouth of a river can form deltas.