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A young river is very active. It is still at the upper course. It moves at a characteristic high speed that enhances its active down-cutting and under-cutting. Its competence is very high due to its speed.

An old river on the other hand is characterised by its materials and also the topography of its course. The old river has lost its competence due to the gradient of its course. The speed is low compared to a young river.

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12y ago
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13y ago

i would have to say because it is smaller and it has rough non smooth surfaces

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Wiki User

10y ago

fast

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Q: Do young rivers travel fast or slow?
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