Erosion Control

Slide 1 Erosion Control Presentation produced by team 3: Brock, Dwight, Steph, Roger, Kayne. Slide 2 What is Erosion Control? Erosion can be a very serious problem, from small-scale residential yards all the way to large commercial construction sites. Over one billion tons of topsoil are lost every year due to erosion. Soil erosion is a major disaster for agricultural development. Slide 3 Soil erosion does not only take away precious topsoil but also causes; pollution in waterways, landslides, and an increased flooding risk. This urgently calls for erosion control. Steps of erosion control can vary from simple use of grass or shrub selection to complex coir matting, silt sock placement and more permanent solutions of physical water diversion structures. Slide 4 Minimize disturbed areas Minimizing the disturbance area of your project will reduce the erosion potential on the site. Preserve as much natural vegetation as possible and aim for zero disturbance on areas that have topsoil in place. Removing existing vegetation will just encourage erosion. Slide 5 Types of Erosion Control Vegetated Swales Retaining Walls Snow Fence Geotextiles Slide 6 Used when slopes become too steep to maintain Main function is to provide sufficient drainage to avoid frost heave behind the wall Can be made of wood, concrete, natural stone or modular concrete Can be tiered or one level Retaining Walls Slide 7 Vegetation Use natural vegetation Native Prairie grasses Cat tails Water tolerant shrubs Sod Sod forms a solid mat due to rhizomonal growth but; Sod can be expensive Prone to slipping when first installed Must be kept wet until established Grass seed can be easily washed away Shrubs Can be deeper rooting compared to grass but take longer to establish. Slide 8 Geotextiles can be blended with vegetation to help prevent water and wind erosion in the rooting establishment stage. Geotextiles also separate soil layers and help with reinforcement and stabilization. 3 Categories Woven - Includes silt fences, turf mats, grab tensile (like landscape fabric) Non-Woven - Used in areas requiring filtration of soil particles and permeability Coir - Derived from coconut fibres and biodegradable as shown below Slide 9 Mats and Fencing Wind stop/break fencing: Includes the classic mesh type snow fence. Rig mats; are like a portable mulch providing a temporary solid surface for equipment to drive over. Anchor reinforced Vegetation systems; Nilex offers a wide variety of anchoring systems designed to be used in areas of extreme watershed concern such as hurricane prone areas or for riverbanks in flood zones. Slide 10 The END is not the end… Its the beginning of something new….