alluviation
/əˌluːviˈeɪʃən/
noun
- The process by which rivers and streams deposit sediment (sand, silt, clay) on land, building up floodplains and deltas over time.
- The gradual alluviation of the valley floor raised the land level by several feet.
- Alluviation has created some of the world's most fertile agricultural regions.
- Scientists study alluviation to predict how river landscapes will change.
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