What Happens to the Flow Velocity and Erosive Power of a Stream

question 104

Multiple Choice

What happens to the flow velocity and erosive power of a stream during a high discharge event if levees have been created to confine flow to the channel? (Remember Q = wdv)

• A)velocity increases because the width does not increase,and the erosive power increases.
• B)velocity increases because depth does not increase,and the erosive power increases.
• C)velocity decreases because the depth of the channel is significantly greater,and the erosive power increases.
• D)velocity decreases because the depth of the channel is significantly greater,and the erosive power decreases.
• E)there is no change to flow velocity and erosive power as the river is still the same water body.

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