Means of or pertaining to ALLUVIUM. An alluvial plain is a relatively flat or level area of fertile land created by the deposition of sand, silt and mud following the consecutive flooding by rivers and its subsequent...

The soil deposited as fine grains of sand, mud or silt by flowing water, especially that deposited by rivers during flood conditions on the areas of land so...

Alluvium (from the Latin, alluvius, from alluere, "to wash against") is soil or sediments deposited by a river or other running water. Alluvium is typically made up of a variety of materials, including fine particles of silt and clay and larger...