Silt
From Conservapedia
Silt is sediment deposited by water in a river bed, channel, flood plain etc. Harbours and waterways which are at risk of silting up (being blocked by silt) require frequent dredging.
Silt is sediment deposited by water in a river bed, channel, flood plain etc. Harbours and waterways which are at risk of silting up (being blocked by silt) require frequent dredging.