Alluvial river

An alluvial river flows over sediment it has deposited, commonly across a floodplain. Erosion and deposition continually reshape its channel and surrounding land.

Sediment transport: The movement of sediment by water, wind, ice, or gravity. The river's ability to carry sediment helps determine where it erodes and deposits.
Alluvium: Unconsolidated sediment deposited by flowing water. Alluvium forms the material of the riverbed and many adjacent floodplains.
River engineering: The design and modification of rivers and their infrastructure for human purposes. Engineering works attempt to control channels whose sediment and flow continually change.
Bedrock river: A river that flows mainly over exposed or near-surface bedrock. Unlike an alluvial river, its channel boundaries are not primarily made of deposited sediment.
Meandering river: A river whose channel follows a winding path with alternating bends. Meanders are a common channel pattern produced by shifting erosion and deposition.
Floodplain: Flat or gently sloping land beside a river that is inundated during floods. It receives sediment when floodwater spills beyond the channel.
Flood hazard: The potential for flooding to harm people, infrastructure, or ecosystems. Floodplain occupation makes changing river flows and overbank sedimentation consequential.
Braided river: A river with multiple shifting channels separated by sediment bars. Braiding is one alluvial pattern, often associated with abundant sediment and variable flow.
River bar: A ridge or patch of sediment deposited within a river channel. Bars form where flow loses capacity to carry sediment, redirecting the channel.
Point bar: A sediment deposit that grows along the inside of a river bend. Point bars record deposition on the inner sides of migrating meanders.

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