Silt Curtain Selection Tool

1

Waterway & Environment.

Describe where the silt curtain will be installed

Type of waterway

Pond, lake or dam

Still or near-still water, no meaningful current or tidal movement

Type 1

Stream or canal

Low to moderate flow, sheltered from wave action

Type 1

River — non-tidal or low to moderate flow rate

Predictable, manageable flow; no significant tidal influence

Type 2

Inner harbour — tidal but sheltered

Tidal movement present but protected from open ocean conditions

Type 2

River — tidal or higher flow rate

Tidal reversal or elevated current velocity; estuarine environments

Type 2 PLUS

Open coastal, port or shipping channel

High tidal flows, wind exposure, vessel traffic or open ocean conditions

Type 3 / Custom

Current speed (approximate)

Still / negligible

Less than 0.1 m/s

Low

0.1–0.3 m/s

Moderate

0.3–0.6 m/s

High

Greater than 0.6 m/s

Wave action & exposure

None / minimal

Fully sheltered

Light

Occasional small waves; partially sheltered

Moderate

Regular wave activity; semi-exposed

Heavy / exposed

Open water, ports, coastal or high wind

Is the waterway tidal?

No — non-tidal

Minor tidal influence

Small tidal range, limited reversal

Moderate tidal movement

Regular reversal with measurable range

Strong tidal movement

Significant tidal range and current reversal

2

Water Depth & Curtain Specifications.

Enter what you know — estimates are fine at this stage

Skirt depth guidance: Skirt depth should reach close to the seabed to prevent sediment migration underneath — typically 80–90% of the water depth. If unsure, our team will help determine the right specification.

Water depth at deployment site (m)

Approximate — average depth across the site

Skirt depth required (m) (if known)

Our team will advise if left blank

Approximate curtain length required (m)

Total lineal metres of curtain

Flow rate of waterway (if known)

Include units — helps our team refine specification

3

Project Details.

Tell us about the work being carried out

Type of project (select all that apply)

Dredging

Channel maintenance, capital dredging, marina deepening

Bridge or jetty construction / repair

Piling, caisson work, structural works in water

Rockwalling or shoreline works

Revetment, seawall, bank stabilisation

Marina or wharf development

Construction, upgrade or extension works

Stormwater outfall or drainage works

Culvert installation, pipe works near waterways

Tailings dam or mine site

Containment around mining water management infrastructure

Excavation near waterway

Trenching, cofferdam, in-water earthworks

Other

Describe in the notes field below

Estimated project duration

Short term

Less than 3 months

Medium term

3–12 months

Long term

12–18 months

Extended deployment

18 months or more

4

Anchoring & Installation.

Anchoring is critical to curtain performance — tell us what you know

Seabed / substrate type

Sand or silt

Soft substrate — screw or Danforth anchors

Mud or soft clay

Very soft — specialised anchoring may be needed

Rock or hard substrate

Concrete blocks or custom anchoring frames

Unknown / to be confirmed

Our team can advise on anchoring options

Installation plan

Contractor will install the curtain themselves

Contractor will engage a specialist installation contractor

We require information on installation methodology

We require information on anchoring options

Anchoring plan details (optional)

5

Compliance & Special Requirements.

Optional — helps us tailor the recommendation

Regulatory or environmental requirements (select all that apply)

State EPA or environmental authority conditions

Erosion & Sediment Control Plan (ESCP) requirement

Marine park or protected waterway zone

Specific turbidity limits or monitoring requirements

Special considerations (select all that apply)

Variable water depth across site

Tapered seabed or irregular shoreline profile

Irregular or complex shoreline

May require custom anchoring or panel configuration

Active vessel traffic in area

Curtain placement may need to allow vessel passage

Reuse or relocation expected

Curtain will be retrieved and redeployed at another site

6

Get Your Recommendation.

Your answers are summarised below — click to generate your curtain recommendation

Summary of Your Site Conditions

Waterway type—

Current speed—

Wave / exposure—

Tidal conditions—

Water depth—

Curtain length—

Project duration—

Envirosmart Recommended Silt Curtain

—

Suitable for

—

Buoyancy system

—

Skirt material

—

Ballast system

—

Key features for your site

⚠️ Upgrade consideration noted:

Always confirm with an Envirosmart expert.

This recommendation is based on the information you’ve provided and is intended as a starting point only. Silt curtain selection involves many site-specific variables — a curtain that appears suitable from a waterway classification alone may need to be upgraded, customised or re-specified once all factors are assessed by our technical team.

Exact tidal range and reversal velocity

Seabed profile and substrate type

Local seasonal weather patterns

Vessel wash and traffic load

Regulatory turbidity monitoring conditions

Skirt depth vs. actual seabed contours

Project duration and UV exposure

Redeployment and retrieval requirements

Our team works alongside project managers, engineers and environmental consultants to deliver the right curtain for your project — not just the closest catalogue match.

Send your details to our team.

Your recommendation and all site condition answers will be included automatically.

First Name *

Last Name *

Company / Organisation

Phone or Mobile

Email Address *

State / Territory

Project name / location

Additional notes

🔒Your details are used only to respond to this enquiry. We will never share your information with third parties for marketing purposes.

📧Clicking Send Enquiry will open your email app with your full site assessment and recommendation pre-filled, ready to send to sales@envirosmart.com.au.

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Silt CurtainSelection Tool.

Summary of Your Site Conditions

Always confirm with an Envirosmart expert.

Silt Curtain
Selection Tool.