Increasing urban development, threatened aquatic population levels, and ever-tightening budget constraints demand restoration efforts that are well designed and implemented. Stillwater Sciences employs a performance-led approach to process-based restoration planning and implementation that includes:
We identify the watershed-specific context, the limiting physical and biological conditions, the biological performance criteria, a prioritized suite of measures best suited to restore natural aquatic function, and a monitoring strategy to ensure the long-term achievement of management goals. The result is a recommendation for restoration that is tailored to the specific needs of the watershed and site, taking into account both historical and future conditions (e.g., land use and potential climate change impacts). Capitalizing on the diversity of our expertise and experience, our restoration projects incorporate watershed-scale understanding of the physical and biological context, channel morphology, natural recovery, flow and sediment transport processes, habitat structure and diversity, and the specific needs of critical or endangered species.
Our projects range from revegetation to improve wetland habitats to adding in-channel structures to enhance riverine habitats.
Based on our systematic analysis of the North Umpqua basin, we determined that Rock Creek had by far the greatest potential for coho salmon restoration of any tributary in the basin. We developed a conceptual model for coho salmon in Rock Creek, and evaluated hypotheses of potential limiting factors with focused studies and model runs (using RIPPLE ) to conclude that winter habitat was the primary factor limiting coho populations in Rock Creek. We designed and implemented a wood and boulder placement experiment to help determine the best configuration for restoration of the reach, and are currently monitoring the effectiveness of this approach. For more about this project, click here.