Question

Explain how stream volume and speed affect the size, shape and flow of streams and rivers

Answer 1

Stream volume and speed affect the size, shape and flow of streams and rivers by eroding and depositing sediment. As the stream volume increases, the speed of the water increases, allowing it to carry more sediment. This increased sediment load causes the stream to erode its banks and bed, widening and deepening the channel. As the stream erodes, it also deposits sediment, creating bars, islands, and other features. The shape of the stream is determined by the amount of sediment it carries and the speed of the water. Faster water will erode more material, creating a deeper, wider channel, while slower water will deposit more sediment, creating a shallower, narrower channel. The flow of the stream is also affected by the volume and speed of the water. Higher volumes and faster speeds will create a stronger current, while lower volumes and slower speeds will create a weaker current.