The Nature Conservancy's 4,122-acre preserve encompasses much of the Stillaguamish River estuary. This saltwater nursery boasts marshes, vast mudflats and tidally influenced channels supporting hundreds of thousands of birds and several species of salmon. Since 2002, this large-scale project first acquired and continues to restore riverine and tidal processes to Port Susan Bay. This project was an integral component of a larger programmatic effort to restore ecological functions to the Stillaguamish estuary, which has been modified by historical large-scale physical alterations that have reduced the capacity of the system to support estuary-dependent species. Today, based on the results of a 5-year post-construction monitoring effort, adaptive management is needed to ensure resiliency of the Stillaguamish estuary and Port Susan Bay Preserve. This project will continue to address potential actions related to increasing channel and freshwater connectivity across the restoration site.