Drainage_Virtual_Drainlines

Virtual Drainlines are used to maintain network connectivity when conveyance features are absent. For example, if a stormwater pond has both inlet and outlet conveyance pipes, a virtual drainline is used to connect the inlet and outlet pipes through the pond. Virtual drainlines do not represent "real-world" features, but are used to show the flow direction and path of stormwater and maintain network connectivity in a GIS. Please read metadata (https://matterhorn.piercecountywa.gov/GISmetadata/pdbpubw_swVirtualDrainLine.html) for additional information. Any data download constitutes acceptance of the Terms of Use (https://matterhorn.piercecountywa.gov/Disclaimer/PierceCountyGISDataTermsofUse.pdf).虚拟排水线路（Virtual Drainlines）用于在缺少输送设施的情况下维持网络连通性。例如，若某雨水调蓄塘同时配备进水与出水输送管道，则可通过虚拟排水线路经由该调蓄池连接进水与出水管道。虚拟排水线路并非代表“现实存在”的实体设施，而是用于在地理信息系统（GIS, Geographic Information System）中展现雨水的流向与路径，并维持网络的连通性。如需获取更多相关信息，请查阅元数据：https://matterhorn.piercecountywa.gov/GISmetadata/pdbpubw_swVirtualDrainLine.html。下载本数据集的任何数据均视为您已接受相关使用条款：https://matterhorn.piercecountywa.gov/Disclaimer/PierceCountyGISDataTermsofUse.pdf