Sanitary Sewer Main

Spatial representation of city owned sanitary mains across the City. Managed by the Sanitary Department. The GIS department manually digitizes additions from georeferenced AsBuilt drawings. This data is used in spatial and tabular analysis, as well as hard copy maps and web maps.本市范围内市属生活污水干管的空间数据集。该数据集由本市环卫部门管理。地理信息系统（Geographic Information System, GIS）部门通过人工数字化的方式，将来自经地理配准的竣工实测图纸中的新增管线数据纳入该数据集。本数据集可应用于空间分析与表格分析，同时可用于制作纸质地图与网络地图。