The material used in turbidity curtains can vary depending on the needs of your project. Filtering geotextile curtains are used in waters with stronger currents, whose permeability allows the fabric to last longer while still catching larger sediment. A solid PVC curtain may be used in calmer waters, able to block moving particles of all sizes.
In oceans and faster currents, you’re more likely to see porous geotextile curtains. The permeability of these allow water to pass through faster, reducing the chance that the floatation may submerge under too fast or too high waters. Solid PVC-curtains may be used in places where the water is slower and there’s minimal wind, or where you don’t intend on keeping it in one place for too long. The length of your skirt will also depend on what you’re attempting to catch. Objects on the surface like floating trash or oil can be caught by a shorter skirt, whose length allows life and natural particles to pass underneath. A longer skirt will be more appropriate in places where reducing sediment is a priority.
