Which source of stream flow is responsible for forming and shaping channels?

Stormflow is the source of stream flow that plays a significant role in forming and shaping channels. During and after rainfall events, stormflow occurs as runoff from precipitation quickly enters streams and rivers. This increased volume and velocity of water can lead to rapid erosion of streambanks and the channel bed, effectively carving and shaping the landscape over time.

Stormflow's higher intensity can dislodge sediments and alter the channel’s structure, especially in the initial stages of runoff when the flow is concentrated. It can also change the course of streams, create new paths, and lead to the formation of features like pools, riffles, and cut banks. Throughout this process, the physical power of the stormflow is crucial in determining the morphology of riverbeds and stream corridors. This dynamic activity is much more pronounced during storm events compared to other flow types, which are generally more stable and less erosive.