Basin boundaries derived from terrain data - King County only

For more information about this layer please see the GIS Data Catalog. A delineation drainage areas that span in scale from large portions of a river basin, down to tributaries that drain to a large body receiving waters (e.g., Lake Washington). There is not a consistent method applied (for example stream order) to define scale of a basin to be identified. In general, these basins characterize large tributaries and rivers in Puget sound region. A basin is comprised of multiple catchments.