Washington State Department of Ecology, SEA ProgramWashington marine (saltwater) shorelines including Puget Sound, Hood Canal, the Strait of Juan de Fuca, and the Pacific coastline. Also includes those portions of Washington's marine shorelines that are designated "Shorelines of State-wide Significance" by the Shoreline Management Act, Chapter 90.58. Nisqually Delta area updated May 2016 to reflect post dike removal.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/dfad4cdc5a7f40f58f2fc75ebefaaf51_9engState of Washington Geospatial Open Data PortalPublicShoreline Management Act (SMA) Jurisdiction: Adopted Marine Shoreline [Washington (State)]Web servicesWashington (State)Last Modified: 2025-09-23