Answer
Between the headwaters and the mouth of a stream, several changes typically occur. The channel width tends to increase, as the river collects more water from its tributaries along its course. Channel depth may also deepen as the river carries more sediment downstream and carves its channel deeper into the substrate.
Flow velocity generally increases as more water is added to the river, especially during wetter periods or as it passes through steep sections. Finally, the discharge typically increases significantly from the headwaters to the mouth as more water is added from tributaries and precipitation. These changes occur due to the accumulation of water and sediment along the river's course, as well as the influence of factors like topography, geology, and climate.
Work Step by Step
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