Soils carried by water and deposited along a stream are termed

Alluvial soils (alluvium) are transported and deposited by flowing water (rivers). They are generally loose, well-graded, and of variable composition; found in river deltas and flood plains. Other transported soil types: Colluvial (gravity/slope wash), Aeolian (wind-blown, e.g. loess), Marine (ocean/tidal), Lacustrine (lake-deposited). Water-deposited soils are alluvial.

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