For more information about this layer please see the GIS Data Catalog. Watershed Resource Inventory Area. WRIA planning units were established under Washington Administrative Code (WAC 173-500). Plann
For more information about this layer please see the GIS Data Catalog. A delineation of large rivers basins in Washington State. Areas that directly drain to the Puget sound but are not part of a rive
King County Snohomish County Planning Department2026-04-01 更新20
