What geological feature is formed when a meandering river changes its course by cutting through the narrow neck of a loop, leaving behind an abandoned crescent-shaped water body?

💡 Solution & Explanation

An oxbow lake is created when continuous erosion along the outer banks of a river meander narrows the neck between bends until floodwaters breach it during high discharge, causing the river to adopt a straighter path and leaving the isolated loop as a standing water body. Alluvial fans are cone-shaped depositional landforms built where swift mountain streams emerge onto flatter lowland plains. Braided channels consist of a network of small, interlacing river channels separated by temporary sand and gravel bars. Natural levees are raised embankments of sediment deposited immediately along river banks during annual overbank flooding events.