The overall goal of this assessment is to develop large-scale project concepts that will restore natural river and floodplain processes and habitat for Chinook salmon and other species by removing or modifying existing hydromodifications within the Skiyou and Ross Island Reaches of the Skagit River. It will develop 2-4 specific restoration project concepts within constraints imposed by existing land use and infrastructure, conduct targeted outreach to include stakeholders in project development, and identify property acquisition strategies that support project concepts. The technical analyses proposed include developing a planning level 2-d hydraulic model based on 2016 LiDAR, mapping floodplain and channel features using existing data, aerial photographs, and a Relative Elevation Model, and delineating channel migration areas. These results will be used to characterize the spatial scale of the hydrogeomorphic processes that form and sustain habitat, and delineate a minimum-width ecological corridor for project planning. They will also be used to evaluate potential flood and erosion risks to infrastructure and private property. These analyses will support Skagit Watershed Council members and other key stakeholders in developing projects that restore river and floodplain processes based on the ecological corridor and constraints identified in the risk analysis. Examples of the Relative Elevation Model and Ecological Corridor analysis methods are included as attachments.