The erosive power of water is directly proportional to its velocity. This means that the faster the water is moving, the more sediment it can carry and the more erosion it can cause.
When water flows quickly, it has more energy and can pick up and carry larger particles of sediment. This is why fast-moving water can erode the banks of a river and create deep channels. In contrast, slow-moving water has less energy and can only carry smaller particles of sediment. This is why slow-moving water often deposits sediment on the banks of a river and creates sandbars.
