Silt fences are a perimeter control device use to temporarily manage sediment at construction sites. It is made of a thick network of fabric installed in the direction of water flow within the construction area. Silt fences are easy and inexpensive to design and install. Once installed, a silt fence prevents the movement of sediments from disturbed areas into nearby waterways. It can also restrict the movement of construction site waste materials in stormwater runoff from getting into waterways or waterbodies, thus reducing soil erosion in the process.