Complete Guide to Silt Screen (Turbidity Curtain)

Silt Screens, also known as turbidity curtains, are essential for managing sediment control in small waterways during construction projects. This guide explains what a silt screen is, how it works, and when to use it—so you can ensure environmental compliance and effective water protection.

What is a Silt Screen?

The Silt Screen is a floating curtain system designed to contain sediment, debris, and other pollutants stirred up by construction activities near water. Made from PVC-coated polyester with an anti-mildew treatment, this American-made product is highly durable and resistant to wear.

Turbidity curtain deployed in waterway

Key Features of a Silt Screen

• Floating design for effective sediment containment
• Type 1 DOT compliant for calm water applications
• Available in multiple depths to fit pond, lake, and canal projects
• Ships in standard 50' lengths for easy transport and deployment
• PVC-coated polyester material with anti-mildew treatment for long life
• Made in the USA, supporting local manufacturing

Where and When to Use a Silt Screen

Silt Screens are typically used in small bodies of water such as ponds, small lakes, and canals. They are perfect for:

• Construction sites near waterways
• Dredging operations in ponds and canals
• Shoreline restoration projects
• Stormwater runoff control during development

How Silt Screens Work

The silt screen floats on the surface while a skirt made from strong fabric extends below to block sediment. Anchored in place, it creates a barrier that keeps stirred-up silt from drifting into sensitive water bodies, protecting aquatic life and complying with environmental regulations.

Most commonly used as a Type 1 DOT silt screen, this system is designed for areas with calm waters and minimal wave action.

 

Silt screen in active job site environment

Installation Tips

Here’s how to set up a silt screen for effective use:

1. Determine the appropriate depth based on the waterway (standard sizes available).
2. Unroll and position the curtain along the work site boundary in the water.
3. Anchor the curtain at regular intervals using stakes or anchor kits.
4. Ensure that the floating top and weighted bottom are securely in place to prevent gaps.
5. Regularly inspect the curtain during construction for movement or damage.

Case Study: Pond Construction Project

A local construction firm recently used our Type 1 Silt Screen during a pond excavation project. The goal was to prevent sediment from drifting into a connected stream. By installing a 150' long curtain with a 5' depth, they successfully contained all sediment within the pond site. This ensured no fines or debris entered the stream, keeping them in compliance with environmental regulations and avoiding costly fines.

Thanks to the durable, anti-mildew treated fabric, the curtain held up through a month-long rainy period, showcasing its reliability under real job site conditions.

Summary

Silt Screens are an essential, cost-effective solution for managing water pollution during construction. Whether working near ponds, lakes, or canals, these floating barriers provide vital protection for sensitive ecosystems.