A silt fence is a temporary sediment barrier. It is made from woven, synthetic materials that allow water to seep through, but do not allow larger silt particles to pass. The materials are selected to withstand the elements, and their specific properties are typically referenced in a jurisdiction’s specifications. Silt fence is staked in place between the disturbed ground and the waterway or drainage system that it would flow to. Silt fence is designed largely to catch sheet flow over a fairly broad area.