Silt Fences are temporary silt control devices that are designed to prevent the release of silt from a construction site. Silt fences prevent silt contamination of sensitive areas such as neighboring properties, streams, and sewer catch basins. A properly installed and maintained silt fence will collect silts before they can cause contamination requiring expensive clean up. Silt fences create a puddle behind the fence that acts as a "stilling basin" allowing silts to settle. Silt Fences are most often used on construction sites where the soil has been stripped of natural vegetation. The bare soil is easily eroded and can lead to the loss of silt in the event of a run-off event. The silt fence helps to prevent the movement of silt from the bare soil area to an adjacent area.