A hydrologist would expect a graded stream to have a smooth, concave-upward profile because there is no net erosion or deposition causing the stream profile to no longer change.

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Quizplus · Accepted Answer

A graded stream has reached an equilibrium between the water flow and the sediment supply, resulting in a smooth, concave-upward profile. The stream may still experience local erosion and deposition, but the overall profile will remain relatively stable over time.

A Hydrologist Would Expect a Graded Stream to Have a Smooth