Which risk increases when hydraulic head pressure diminishes an oxbow's levee?

💡 Explanation

River avulsion increases because decreased levee pressure facilitates channel incision via hydraulic action, eventually cutting through the levee; therefore, the river shifts, rather than continuing the established course.

• Which outcome occurs when arid region soils experience limited plant growth?
• Which weather outcome occurs when a high-pressure system intensifies?
• Which mechanism causes increased anchovy populations following strong coastal upwelling events?
• Which mechanism causes higher salinity in terminal lakes located in arid regions?
• Which outcome results from increased anthropogenic barrier island erosion?
• Which geologic process primarily scours and deepens a fjord's U-shaped valley profile?