DOT Turbidity Curtains for Moderate Flow Waters

Texas Boom Company's Type 2 turbidity curtains provide reliable sediment and runoff control for moderate water flow applications throughout the Gulf Coast and nationwide. Engineered for construction sites in areas where there may be slow to moderate running current (up to 2 knots or 3.5 feet per second) or wind and wave action, our Type 2 barriers meet DOT specifications while delivering the durability that marine contractors demand.

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Quick Product Specifications

• Section Lengths: 50 ft and 100 ft sections (custom lengths available upon request)
• Skirt Depths: 3’ - 50’
• Skirt Type: Both permeable and impermeable options
• Fabric: PVC-coated polyester fabric with EPS flotation
• Applications: Lakes, streams, canals, slow-moving rivers, inter-coastal, and tidal areas

When to Use Type 2 Turbidity Curtains

Ideal Water Conditions

Type 2 turbidity curtains are specifically designed for dredging and marine construction areas that experience mild current, wind, and wave activity. These barriers are suitable for use in waters with moderate environmental forces.

Perfect for:

• Coastal or Marine Construction
• DOT Road and Bridge Construction
• Dredging
• Mining
• Pile Driving
• Marina Construction Projects

Current Specifications

Type 2 curtains are designed for water flow conditions up to 3.5 feet per second. For sites with stronger currents or wave action, consider our Type 3 turbidity curtains. For still waters, explore our Type 1 turbidity curtains.

Key Features & Benefits

• Superior Sealing: Constructed using RF Welds, with flotation chambers being individually sealed for maximum durability and water containment
• Universal & Tool-Free Connection: ASTM Universal aluminum end connector plates allow for seamless connection with other Type 2 turbidity curtains to create longer barrier systems
• Easy Handling: Flotation segments are 3 ft long for superior wave conformity, ease of handling & storage
• Cost-Effective Solution: Economical option designed for deployment in a wide range of applications while maintaining professional-grade performance
• Custom Sizing: Skirt height can be customized and tapered to conform to the bottom profile of the body of water 
• Enhanced Stability: Ballast chain provides strength and stability to maintain proper curtain position in varying water conditions
• Color Options: Typically made with fabric color of orange or yellow for high visibility, with other colors available via special order

Compliance & Certifications

Our Type 2 curtains meet Federal Department of Transportation (DOT) requirements and ensure compliance with the Clean Water Act and National Pollution Discharge Elimination System (NPDES), protecting your project from potential fines and delays.

Installation & Deployment Guide

Pre-Installation Planning

Proper installation is critical for effective sediment control. A successful turbidity curtain installation requires proper planning and implementation.

Site Assessment Checklist:

• Measure water depth at high and low tide
• Determine current speed and direction
• Identify anchor points on shoreline
• Allow for an additional 10-20% deviation in straight line measurements to compensate for measuring errors and reduce stress from potential waves

Installation Best Practices

Anchoring Requirements:

• Maximum span of 100 feet between anchor points for stability
• Type 2 applications require both land and water anchors
• Constant tension throughout the ballast chain or cables to minimize arcing in the curtain caused by wind and current
• Stakes, concrete blocks, or Danforth-style anchors for position maintenance

Explore Texas Boom Anchor Kits

Deployment Steps:

1. Connect sections on shore using nuts and bolts or durable zip ties
2. Attach tow bridle to leading edge
3. Deploy curtain parallel to water flow direction in streams and rivers where the current is one-directional
4. Secure to shoreline and water anchor points
5. Deploy curtain by cutting reefing twine after anchoring

Depth Considerations

In tidal situations, maintain a minimum of 1 foot of clearance between the skirt and bottom to prevent sediment disturbance.

Maintenance & Longevity

Regular Inspection Protocol

Inspect turbidity curtains daily, with additional monitoring during storms or increased flow events. Any visible plume passing beyond the curtain requires immediate modification or repair.

Monthly Maintenance Tasks

• Check for UV damage or fabric wear
• Remove excessive marine growth
• Inspect flotation and ballast chain
• Verify anchor point security
• Check tension cable integrity

Storage & Care

After project completion:

• Rinse salt water deployments with fresh water
• Clean marine growth with pressure washer
• Dry completely before storage
• Store in cool, dry location away from direct sunlight

Technical Specifications

	Standard Type II (DOT)	Heavy Duty Type II
Fabric	18 oz per sq ft PVC	22 oz per sq ft PVC
Floatation	6” closed cell foam in sealed pockets	8” or larger closed cell foam in sealed pockets
Top Tension	5/16" Galvanized steel cable	5/16" Galvanized steel cable
Ballast	5/16" Galvanized steel chain	5/16" Galvanized steel chain
Skirt Height	3 ft – 50 ft Skirt height can be tapered to conform to bottom profile	3 ft – 50 ft Skirt height can be tapered to conform to bottom profile
End Connection	ASTM F962-94 universal “Z” connectors on top and bottom. Lacing Grommets on reinforced ends on both ends between connectors. Rope, strong zip ties or nuts and bolts can be used through the grommets.	ASTM F962-94 universal “Z” connectors on top and bottom. Lacing Grommets on reinforced ends on both ends between connectors. Rope, strong zip ties or nuts and bolts can be used through the grommets.
Section Lengths	50 ft, 100 ft	50 ft, 100 ft

  DOT Type 2 Specification Sheet

  Heavy Duty Type 2 Specification Sheet

Why Choose Texas Boom Company?

Extensive Expertise

With experience serving marine contractors throughout the Gulf region and the greater U.S., we understand the unique challenges of coastal and inter-coastalconstruction. Our Type 2 turbidity curtains are engineered to withstand the moderate flow conditions while meeting regulatory requirements.

Competitive Advantage

• In-stock availability for immediate shipping
• Bulk pricing for large projects
• Technical support from sediment control experts
• Proven track record with DOT projects
• Made in USA quality assurance

Fast, Reliable Delivery

We maintain an extensive inventory of 50 ft and 100 ft sections in popular skirt depths, ensuring rapid deployment to your job site. Most orders ship within 24-48 hours.

Request a quote on Type 2 turbidity curtains today.

Request a Quote

Frequently Asked Questions

What's the difference between Type 1, Type 2, and Type 3 turbidity curtains?

Type 1 curtains are designed for calm, protected waters with minimal current (less than 1 ft/second). Type 2 curtains handle moderate conditions with currents up to 5 ft/second and mild wave action. Type 3 curtains are built for open water with strong currents, tides, and significant wave action. Choosing the right type ensures effective sediment control and prevents curtain failure.

Can I connect Type 2 curtains with Type 1 or Type 3 sections?

While technically possible with universal connectors, we don't recommend mixing curtain types. Each type is engineered for specific water conditions, and combining them can create weak points in your barrier system. If your project spans different water conditions, consult our technical team for a customized solution.

How long can Type 2 turbidity curtains stay deployed?

With proper maintenance, Type 2 curtains can remain deployed for 6-12 months in typical conditions. Factors affecting longevity include UV exposure, marine growth, current strength, and debris impact. Regular inspections and cleaning can extend deployment life. For projects exceeding 12 months, consider budgeting for replacement sections.

What anchor system works best for Type 2 applications?

Type 2 installations require both shore and water anchoring. Common configurations include shore stakes or concrete blocks combined with Danforth-style anchors in the water. Anchor sizing depends on substrate type, water depth, and current strength. 

How do I handle turbidity curtains during storms or high-flow events?

Monitor weather forecasts closely and have an emergency response plan. For predicted severe weather, you may need to temporarily remove or reconfigure curtains to prevent damage. Some contractors install "furling lines" that allow quick curtain retrieval. Always prioritize safety - damaged curtains can be replaced, but they shouldn't become navigation hazards.