SPU DWW Drainage Basins

The polygons are intended for use by the City of Seattle as planning-level tool for a preliminary understanding of the drainage patterns in particular areas of the City. The layer is not complete and does not reflect any City determination about how specific locations should be characterized. Drainage Basins areas were delineated using topography, roads and utility infrastructure based on current GIS data, 200-foot scale maps, side sewer cards and engineering design documents. Data source is DWW.drainage_basin_plgn_pv. Labels are based on the attribute NAME. Refreshed weekly.本多边形数据集旨在供西雅图市（City of Seattle）作为规划层级工具，用于初步掌握该市特定区域的排水格局。该图层尚未完备，并未体现西雅图市针对特定区域特征界定的任何官方判定。排水流域（Drainage Basins）区域系基于现有地理信息系统（GIS）数据、200英尺比例尺地图、户侧排污管道档案卡及工程设计文档，依托地形、道路及市政公用基础设施勾勒划定。数据源为DWW.drainage_basin_plgn_pv。图层标签基于NAME属性字段生成。本数据集每周更新一次。