Which risk increases when an artificial levee is constructed on an active alluvial fan?

💡 Explanation

When a levee confines flow on an alluvial fan, floodwaters can divert unpredictably if the levee fails, because the fan's braided channel system naturally distributes flow outwards. Therefore flash flood diversion results, rather than deposition, recharge reduction, or induced seismicity which require compressive mechanisms or tectonic influence.

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