Water Quality Waterways

This GIS layer shows waterway segments affected by the Council-adopted Water Quality Overlay Zone. There are two types of WQ Waterways: those identified as Tributary to 303(d) Waterways and those identified as Headwater Streams. This data is directly from the WQ Waterways Map adopted by City Council.本地理信息系统（Geographic Information System，GIS）图层展示了受市议会正式通过的水质覆盖区（Water Quality Overlay Zone）影响的航道区段。该数据集涵盖两类水质航道（Water Quality Waterways，WQ Waterways）：一类为303(d)名录支流航道，另一类为源头溪流。本数据直接来源于市议会正式通过的水质航道地图。