+Alluvium is loose, unconsolidated [sediment](/wiki/sediment)—such as [sand](/wiki/sand), silt, and clay—deposited by flowing water. Carried by rivers and streams, it often forms fertile plains, valleys, and deltas, enriching the landscape with new soil.
+## See also
+- [River](/wiki/river)
+- [Floodplain](/wiki/floodplain)
+- [Delta](/wiki/delta)
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