Linked from
The 17 pages that link to Sediment budget, each with the reason it gives.
Coastal erosionRelated: Erosion occurs when sediment losses exceed inputs over time.
Sediment depositionRelated: Deposition is the storage term in a system's sediment balance.
Bed loadRelated: Bed load is a distinct flux in river and coastal sediment budgets.
AggradationRelated: A positive sediment balance raises the bed or depositional surface.