King CountyFor more information about this layer please see the GIS Data Catalog . Closed Conveyance ComponentsPipe: A circular closed pipe that is designed to convey stormwater either by gravity or pressurizedflow that is connected to a connect feature on one or both ends of the pipe.Culvert: A Closed Conveyance that drains open channels, Swales, or Ditches for the purpose of passing under a roadway, embankment or other structure. Culverts are not connected to a structure on one or both ends.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/f7bdd189be6c4cde97903a1c92361b56_0engKing County GIS Open DataPublicClosed Conveyance [Washington (State)--King County]Web servicesWashington (State)--King CountyWashington (State)Last Modified: 2026-01-08