When should sediment be removed from a silt fence?

Removing sediment from a silt fence when it reaches approximately 1/3 height of the fence is crucial for maintaining the effectiveness of the sediment control measure. At this height, the accumulated sediment can significantly impede the function of the silt fence, which is designed to intercept sediment-laden runoff.

If sediment is allowed to accumulate beyond this point, it may lead to overflow or bypass of sediment, as the fence will no longer be able to effectively filter the water passing through it. Regular maintenance is essential to ensure that sediment management practices are successful in reducing erosion and preventing sediment pollution in water bodies.

Other options suggest thresholds that are either too low or reactive rather than proactive, potentially compromising sediment control measures before significant buildup occurs. Additionally, waiting until heavy rains or visibility issues arise could result in substantial sediment loss into nearby waterways, countering the purpose of having silt fences in place.