About this time, the amount of trade handled by the Port of Lancaster was declining, largely owing to silting up of the River Lune.
Disadvantages include problems caused by waves and tides, the tendency for excavations to silt up, and the washing away of spoil heaps.
"These people tend to silt up in the system," said Henry Steadman, a sociologist who worked for the New York State Office of Mental Health for 17 years and whose specialty is assessing the risk of releasing mental patients.
When the forests are cleared to make way for agriculture, rivers tend to silt up, the water runs off rapidly, the water courses can dry up in the dry season and flooding can occur in the wet season.
When the Mississippi is low, the flow slows and sediment settles, causing the river to silt up and obstructions to form, said James T. Pogue, a spokesman for the corps in Memphis.
The mouth of the river was beginning to silt up—a powerful symbol of over-exploitation.
When the inlets began to silt up, they were filled in, and the streets were extended, creating new slips.
More often than not, a bilateral deal unblocks one trade route only to silt up its tributaries.
Local communities neglected their upkeep, thus allowing them to silt up, fill with garbage, or generally crumble into ruin.
The all-important waterway that linked Bruges to the sea began to silt up, and the city lacked the nerve to start building a canal to the sea.
