In a given section of channel,the greatest flow velocities are usually
A)near the surface,near the center.
B)along the shallowest portions of the stream.
C)along either bank.
D)near the bottom of the stream channel.
E)in areas with large obstacles,such as tree trunks and boulders.

Question

Quizplus · Accepted Answer

In a given section of channel, the greatest flow velocities are usually near the surface, near the center. This is due to the fact that the water near the bottom experiences more friction and is slowed down, while the water near the banks may experience drag or eddies. The fastest moving water is typically found in the middle of the channel, near the surface.

In a Given Section of Channel,the Greatest Flow Velocities Are