How riffles and pool sequences affect channel shape?

Riffles and pool sequences are critical components of river morphology, influencing channel shape and function. Riffles, characterized by shallow, fast-flowing sections, promote sediment transport and create turbulence, which helps to aerate the water and supports diverse aquatic habitats. In contrast, pools are deeper, slower areas that allow sediment to settle and provide habitat for fish and other organisms. The alternating patterns of riffles and pools create a dynamic channel shape that enhances ecosystem health and stability.