Installing Silt Barrier Across Flows

(San Diego, CA)

I was told that you cannot install a silt barrier across channel flows. Is this true?

Excellent Question! I'd be happy to give you the inside scoop on silt barrier installation. It is true that the best configuration follows the rule of installing the barrier parallel to the flow rather than across it. It could cause tearing and breaking if there is too much pressure on the curtain. There is an exception to the rule, however.

When there is danger of creating a silt buildup in the middle of the watercourse, which would block access or create a sandbar, it is actually recommended that you DO install the silt barrier across the channel flow. This can be avoided if you install the curtain by forming a very long-sided, sharp "V" to deflect clean water around a work site, confine a large part of the silt laden water to the work area inside the "V", and direct much of the silt toward the shoreline. Keep in mind, though, that the barrier cannot be installed perpendicular to the water current.

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