Rivers and streams naturally adjust their form due to changes in water, sediment, and wood within a watershed but as those processes occur, channel erosion can endanger both private property and public infrastructure. In those instances, the best chance long term success at the lowest cost is often working to relocate “at risk” infrastructure outside of high hazard areas. When relocation is not feasible, another successful approach is to change flow patterns upstream of the erosion site and then finally to “protect in-place” using bank stabilization techniques. Our bank stabilization designs work to integrate modern construction techniques and materials while emulating natural processes to create bank elements that enhance local habitats. The result is a sustainable bank solution that integrates with the surrounding landscape providing long-term solutions, whether for civil infrastructure, flood protection or habitat enhancement goals.  An example of sustainable bank protection in a large river using engineered logjams (ELJs) is shown below on the Upper Quinault River where NSD has been working with the Quinault Nation since 2012 to implement restoration actions that improve aquatic habitat and protect private property and infrastructure from erosion.

Bank Stabilization & Bioengineering