Which one of the following is true concerning a major river system?
A. Upstream tributaries generally have lower gradients than the major river.
B. Channel bed roughness and turbulence generally increase downstream.
C. Upstream tributaries generally have higher competencies than the major river.
D. Discharge decreases below junctions with perennial tributaries.
Answer:C
Which one of the following is true concerning a major river system?
A. Upstream tributaries generally have lower gradients than the major river. B. Channel bed roughness and turbulence generally increase downstream. C. Upstream tributaries generally have higher competencies than the major river. D. Discharge decreases below junctions with perennial tributaries.