OUTFALLS

View metadata for key information about this dataset. This data contains locations of Philadelphia Water Department Utility Assets. Its accuracy varies by location. Most of the data is accurate to +/- 1 ft based on the Construction As-Built Drawings it was digitized from. Some areas such as the Philadelphia Naval Business District (Navy Yard) or the Airport are not nearly as accurate, as they were derived from other sources. These sources include but are not limited to: old navy construction documents, field surveys, various conflicting maps both digital and paper. The data took three years to create and it is maintained daily by PWD GIS UNIT. The new maintenance edits are of higher spatial accuracy as GPS equipment is available for field surveys. For questions about this dataset, contact [e-mail]. For technical assistance, email [e-mail].请查看元数据以获取本数据集的关键信息。本数据集包含费城水务局（Philadelphia Water Department）公用设施资产的位置信息，其空间精度因所在区域而异。绝大多数数据源自竣工施工图，位置精度可达±1英尺。部分区域精度相对较低，例如费城海军商务区（Navy Yard）及机场区域，此类数据源自其他渠道，相关来源包括但不限于：老旧海军工程文档、野外勘测数据、各类存在内容冲突的数字与纸质地图。本数据集耗时三年完成，由PWD地理信息系统单元每日维护。由于新增维护编辑工作可借助GPS设备开展野外勘测，因此更新后的空间精度更高。若对本数据集有疑问，请发送邮件至[e-mail]；如需技术支持，请发送邮件至[e-mail]。