TYPE 2 TURBIDITY CURTAINS

Type 2 turbidity curtains or silt curtains, as they are sometimes called, are durable curtains that are suitable for mild currents, waves, and wind. These barriers are designed for the control of silt and sediment during marine construction and dredging. They are available in impermeable and permeable options. American Marine, a division of Elastec, has been manufacturing quality turbidity curtains since 1967. Read our Frequently Asked Questions.

Explore Our Type 2 Turbidity Curtains

SiltMax Type II DOT

Turbidity curtain for sediment control during dredging and marine construction in mild currents, wind, and waves.

View SiltMax Type II DOT

Type II FastWater Screen

Heavy-duty turbidity curtain for moving water, including rivers, streams, and lakes exposed to wind and waves.

View Type II FastWater Screen

Choosing a Type 2 Turbidity Curtain

Type 2 turbidity curtains are commonly considered where mild current, wind, or wave action may be present during dredging and marine construction. The expected flow, water depth, skirt selection, anchoring arrangement, and project duration should guide product selection.

Comparing Type 2 Options

• SiltMax Type II DOT: An option for dredging, pile driving, riprap work, and similar construction in moving water, with permeable and impermeable configurations.
• Type II FastWater Screen: A heavier-duty option intended for moving-water conditions and projects where a more robust curtain design is appropriate.

Type 2 Applications and Installation Considerations

Typical projects include shoreline work, dredging, pile driving, and other construction in rivers, estuaries, streams, or lakes. Conditions vary by site, so a Type 2 label alone is not sufficient to select a design.

See our turbidity curtain installation guide and accessories for information about installation, anchoring, and related components. For a broader comparison, review all turbidity curtain types and DOT requirements by state.

Clean Water Act and National Pollutant Discharge Elimination System (NPDES)

The Clean Water Act and National Pollutant Discharge Elimination System (NPDES) establish requirements that can apply to construction-related stormwater discharges. Turbidity curtains can be one part of a site’s sediment-control approach, but product selection and installation must reflect the specific water conditions, permit requirements, and project design. Consult the project engineer and state or local permitting authority; using a particular curtain does not, by itself, establish compliance.

For state-specific product guidance, see turbidity curtain DOT requirements by state.

TURBIDITY CURTAIN QUESTIONNAIRE

In order that we may recommend the best Turbidity Curtain for your project, please provide the following information. We have included some questions that will help us better understand your needs. Please answer as many as possible. If the flow rate is high, Elastec can provide modeling data to determine anchor spacing and feasibility of systems.

URL

This field is for validation purposes and should be left unchanged.

Name(Required)

First Last

Company(Required)

Email(Required)

Phone(Required)

Street Address(Required)

City(Required)

State / Province(Required)

Zip / Postal Code(Required)

Country(Required)

CountryAfghanistanAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBonaire, Sint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBrunei DarussalamBulgariaBurkina FasoBurundiCabo VerdeCambodiaCameroonCanadaCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos IslandsColombiaComorosCongoCongo, Democratic Republic of theCook IslandsCosta RicaCroatiaCubaCuraçaoCyprusCzechiaCôte d'IvoireDenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEswatiniEthiopiaFalkland IslandsFaroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuamGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and McDonald IslandsHoly SeeHondurasHong KongHungaryIcelandIndiaIndonesiaIranIraqIrelandIsle of ManIsraelItalyJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKorea, Democratic People's Republic ofKorea, Republic ofKuwaitKyrgyzstanLao People's Democratic RepublicLatviaLebanonLesothoLiberiaLibyaLiechtensteinLithuaniaLuxembourgMacaoMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMartiniqueMauritaniaMauritiusMayotteMexicoMicronesiaMoldovaMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNetherlandsNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorth MacedoniaNorthern Mariana IslandsNorwayOmanPakistanPalauPalestine, State ofPanamaPapua New GuineaParaguayPeruPhilippinesPitcairnPolandPortugalPuerto RicoQatarRomaniaRussian FederationRwandaRéunionSaint BarthélemySaint Helena, Ascension and Tristan da CunhaSaint Kitts and NevisSaint LuciaSaint MartinSaint Pierre and MiquelonSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSint MaartenSlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia and the South Sandwich IslandsSouth SudanSpainSri LankaSudanSurinameSvalbard and Jan MayenSwedenSwitzerlandSyria Arab RepublicTaiwanTajikistanTanzania, the United Republic ofThailandTimor-LesteTogoTokelauTongaTrinidad and TobagoTunisiaTurkmenistanTurks and Caicos IslandsTuvaluTürkiyeUS Minor Outlying IslandsUgandaUkraineUnited Arab EmiratesUnited KingdomUnited StatesUruguayUzbekistanVanuatuVenezuelaViet NamVirgin Islands, BritishVirgin Islands, U.S.Wallis and FutunaWestern SaharaYemenZambiaZimbabweÅland Islands

Comments

What is the nature of the project? Dredging, Construction, Runoff/Debris Control, or Other What is the body of water?* Calm lake/pond, Moving river/stream, or Near-shore/ocean What is the duration of the project? What are the water conditions? What is the wave height? What is the current/flow rate? What is the wind velocity in the area? What is the water depth? What is the length & depth of the curtain you need? When do you need to have the curtain installed?

We use the information you submit to respond to your request. Do not include sensitive personal information unless it is necessary. Non-essential marketing and analytics tools should not receive form contents unless you have consented where required and the data flow has been approved.

Would you like to receive information about Elastec's other products?(Required)

Yes

No

SEND NOW

Turbidity Curtain Frequently Asked Questions

Are turbidity curtains in stock and ready to ship?

Account for lead times of a few weeks to produce a curtain in the factory. Most curtains will be custom and not off the shelf.

How much curtain do I need for my project?

Account for the anchor lines. Best anchorage for turbidity curtains is a 5:1 slope. In 10′ of water you will have 50′ of anchor lines on one or both side of the curtain. Possibly into the work area.

How important are water conditions?

Water conditions (wind, wave height, flow rate) are important to ensuring proper anchorage is being used. Account for pull from intake structures, ice, debris, and wake from vessels.

How are deeper curtains affected by tidal flow?

The deeper the curtain, the calmer the conditions need to be. A curtain 30′ deep in 2 knot tidal flow will only have an effective depth of 13′ and will be difficult to keep in place even with heavy anchoring.

How deep should my curtain be?

Curtains should not touch the bottom. Flow of water is not going to be stopped by a fabric curtain. You cannot sand bag or add additional weight to the bottom of the curtain to keep it down. This will tear the curtain. Also, in calm situations, sediment can build up on the curtain making it impossible to retrieve when the work is finished. Curtains will perform better the more parallel they are to the flow.