Which risk commonly increases when flood control levees compress underlying organic-rich soils?

💡 Explanation

When levees compress organic soils, consolidation occurs because pore water is expelled, causing soil volume reduction and levee settlement, leading to reduced stability. Therefore increased levee subsidence happens, rather than channel deposits, flow reduction, or meander erosion which are influenced by different hydraulic factors.

• Which hazard dramatically increases following permafrost thaw underneath Arctic infrastructure corridors?
• Which outcome results when glacial meltwater increases sediment discharge into a proglacial lake?
• Which process intensifies sediment stratification in a fjord's benthic zone following seasonal meltwater pulses?
• Which long-term outcome results when sediment blocks tributary inflow to river-fed lakes?
• Which mechanism causes periodic bursts of sediment flow across alluvial fans during flash floods?
• Which risk increases when a levee system restricts sediment deposition on adjacent floodplains?