What is the name of regolith that is transported by moving water?

The term for regolith that is transported by moving water is alluvium. Alluvium refers specifically to the sediment deposited by rivers and streams, which can vary in size from fine silt to larger pebbles and boulders. This process occurs as water flows, carries sediment along with it, and eventually deposits it in areas like riverbanks, floodplains, deltas, or at the bottom of lakes.

Unlike alluvium, colluvium pertains to sediment that is deposited by gravity on slopes, often accumulating at the base of a hill or cliff. Talus consists of rock debris that falls from cliffs due to weathering and gravity, while vertisol refers to a type of soil that contains a large amount of clay and exhibits significant vertical mixing or movement. Each of these terms describes different processes or types of materials related to sediment and soil, but it is alluvium that directly relates to materials moved specifically by water.