Washington State Department of HealthNon-parcel areas that are permanently or temporarily closed for shellfish harvesting. Also displayed on the Commercial Shellfish Map Viewer here: https://fortress.wa.gov/doh/oswpviewer/index.html This layer is only updated as needed.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/adb6195348d24046985f13c189234a35_0engState of Washington Geospatial Open Data PortalPublicShellfish Polluted Areas [Washington (State)]Web servicesWashington (State)Last Modified: 2025-07-10