Which outcome occurs when artificial levees constrict a major river's channel?

💡 Explanation

Constricting a river creates backwater effects during high discharge, thereby increasing the Flood wave propagation speed upstream because of reduced channel storage and increased flow velocity; therefore, the upstream region is much more susceptible to flooding, rather than mitigated effects downstream.

• Which effect does crustal thickening have on volcanism?
• Which risk is amplified when a deep-sea hydrothermal vent plume's temperature significantly impacts seawater density?
• Which abrasive geological consequence is accelerated when surface winds exceed threshold values interacting with exposed rock features?
• Which surface deformation commonly results from seasonal solifluction in subarctic tundra caused by melting permafrost?
• Which outcome is caused by significant increase in pore water pressure within fault zone sediments during seismic activity?
• Which risk increases when constructing large impermeable structures upon an alluvial plain?