Pierce County, WashingtonGPS'd storm water flow barrier polyline features in unincorporated Pierce County. Includes public and private features except where private gates prevent access. Please read metadata ( https://matterhorn.co.pierce.wa.us/GISmetadata/pdbpubw_swopenchannelbarrier.html ) for additional information. Any data download constitutes acceptance of the Terms of Use ( https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUse.pdf )ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/c454f17c28c145b0a74a2c545b97f7a8_0engPierce County Open GeoSpatial Data PortalPublicDrainage Open Channel Barriers [Washington (State)--Pierce County]Web servicesWashington (State)--Pierce CountyWashington (State)Last Modified: 2025-12-17