King CountyFor more information about this layer please see the GIS Data Catalog . River miles for the major rivers included in Flood Patrol books in 1/10 mile increments. These points have not changed location over the years in order to provide a consistent location reference of river facilities and for response teams.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/b7f45445cf25433b94df816593ee08ae_0engKing County GIS Open DataPublicRiver Miles for Flood Patrol Book [Washington (State)--King County]Web servicesWashington (State)--King CountyWashington (State)Last Modified: 2025-07-31