How do gradient, discharge, channel size, and channel roughness typically change from the head to the mouth of a stream?

What will be an ideal response?


From the headwaters to mouth, there is usually an increase in discharge and channel size. Gradient decreases, as does channel roughness (due to a decrease in sediment particle size). In order to accommodate the growing discharge, channel size increases downstream as well, and so does flow velocity (despite decreasing gradient).

Environmental & Atmospheric Sciences

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What will be an ideal response?

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