alluvion

(n) gradual formation of new land, by recession of the sea or deposit of sediment
(n) the rising of a body of water and its overflowing onto normally dry land
- plains fertilized by annual inundations
flood, inundation, deluge,
(n) clay or silt or gravel carried by rushing streams and deposited where the stream slows down alluvial deposit, alluvial sediment, alluvium,

flood inundation deluge alluvial deposit alluvial sediment alluvium

alluvial alluvium