A silt fence is a temporary sediment control device used on construction sites to protect water quality in nearby streams, rivers, and lakes. It consists of a piece of synthetic filter fabric stretched between a series of wooden or metal stakes. The fabric is designed to pond water, which slows down the runoff and allows sediment to settle out. This structure acts as a perimeter control that intercept sheet flow runoff containing suspended soil particles. By retaining the sediment on-site, it prevents muddy water from entering storm drains and natural waterways.
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