| − | '''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. |