A silt fence is a temporary sediment control device used on construction sites to protect water quality in nearby streams, rivers, and lakes from sediment in stormwater runoff. This barrier is typically made of a synthetic geotextile fabric that is stretched between wooden or metal stakes driven into the ground. When muddy water reaches the barrier, the fabric slows down the flow of the runoff, allowing the suspended soil particles to settle to the ground while the water slowly filters through. By trapping the sediment on-site, a silt fence prevents soil erosion from choking local waterways and damaging aquatic ecosystems.
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