Which outcome occurs when floodwaters overtop river levees?

💡 Explanation

Increased flow causes crevasses during levee overtopping due to hydraulic scour, because the concentrated water erodes the levee structure itself, therefore creating more instability rather than uniform aggradation found in typical floodplains.

• Which outcome accelerates karst landscape development due to rainfall?
• Which fluvial consequence results when river meander erosion breaches its narrow neck?
• Which outcome occurs when stress rapidly accumulates along a transform plate boundary below a large artificial reservoir?
• After effusive lava eruptions decrease, which outcome results from increased dissolved silica content?
• Which mechanism increases sinkhole formation where groundwater extraction lowers aquifer pressure?
• Which outcome occurs when rapid progradation in alluvial coastal plains restricts accommodation space?