Which outcome occurs when excessive discharge flows into an alluvial river system lacking fully developed levees?

💡 Explanation

When excessive discharge flows into floodplain rivers without artificial levees, floodplain inundation occurs because the river overtops its natural banks spreading water into the surrounding plain. Therefore widespread inundation results, rather than groundwater recharge, decreased sedimentation, incision; the other phenomena require either engineered structures or different hydrological conditions.

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