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Geography

Which outcome results when a meandering stream breaches its levee system during high discharge?

A)Avulsion creates a new channel
B)Entrainment increases sediment grade
C)Saltwater increases stream corrosion rates
D)Laminar accelerates base erosion rate

💡 Explanation

Avulsion occurs because high discharge overwhelms the stream's capacity, breaching the levee and causing the stream to seek a steeper, more direct path; therefore, a new channel forms rather than continued flow where the levee holds.

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