Which outcome results when levee erosion in an alluvial plain?

💡 Explanation

Avulsion happens because levees confine river flow; reduced confinement due to erosion results in a breakout. The river adopts a steeper path, therefore forming a new channel across the floodplain, rather than maintaining the original path.

• Which effect results when the Earth's rotation deflects moving air masses?
• Which risk increases because of reduced flow velocity in an oxbow lake compared to the main river channel?
• Which long-term outcome results when elevated atmospheric carbon dissolves into groundwater percolating through karst landscapes?
• Which effect accelerates karren formation on limestone outcrops?
• Which mechanism creates steep-sided fjords after glacial retreat?
• Which mechanism causes fjord sill formation at the mouth of a glacial valley?