Combined Sewer Outfall Sewer Shed

For better understanding this layer was renamed from Combined Sewer Outfall Sewer Shed to Combined Sewer System Area (CSS). This layer shows generally the aggregated footprint of the Combined Sewer System Drainage areas. The boundary considers the MS4 drainage area boundary and where sewer separations has occurred. Any considerations near the boundaries of the MS4 and CSS should be further investigated.

为便于使用，本图层已由合流制排污渠渠段（Combined Sewer Outfall Sewer Shed）重命名为合流制系统区域（Combined Sewer System Area，CSS）。本图层总体呈现合流制系统排水区域的聚合覆盖范围。其边界参考了城市独立雨水排水系统（Municipal Separate Storm Sewer System，MS4）的排水区域边界以及已完成排水管网分流的区域。针对城市独立雨水排水系统与合流制系统区域边界附近的相关情形，需开展进一步调研与核实工作。