Which hydrologic consequence results when extensive levee systems constrict a major river's floodplain during a large flood event?

💡 Explanation

When levees constrict a floodplain, the flow area decreases because the water is forced into a narrower channel, leading to increased depth and higher flood stage locally. Therefore increased flood stage will occur, rather than decreasing deposition, reducing avulsion, of increasing velocity upstream, all outcomes of un-channelized flood events.

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