#geography dictionary
- Alluvial deposit — An accumulation of alluvial materials, silt, gravel, branches, or vegetative debris brought by the flooded waters of a river or stream and deposited at points where the current velocity decreases. This natural phenomenon structurally modifies the minor bed and can cause natural damming or course deviations.
- Alluvial deposits — A rare plural form or local collective variant for repeated accumulations of alluvium, sediments, silt, and woody debris deposited along a riverbed following several successive floods. It defines the unstable microrelief made of gravel bars and alluvial ridges.