What typically happens when tributaries join the main river?
A)channel size increases
B)water velocity increases
C)the amount of discharge increases
D)total sediment load increases
E)All of these.

Question

What typically happens when tributaries join the main river? 
A)channel size increases 
B)water velocity increases 
C)the amount of discharge increases 
D)total sediment load increases 
E)All of these.

Quizplus · Accepted Answer

When tributaries join the main river, the channel size increases, which accommodates the increased water volume. This, in turn, increases the water velocity and the amount of discharge in the main river. Additionally, the sediment load also increases due to the additional sediment brought in by the tributaries. Therefore, all of these happen when tributaries join the main river.

What Typically Happens When Tributaries Join the Main River