MS4 Sewer Shed

For better understanding this layer was renamed from MS4 Sewer Shed to Municipal Separate Storm Sewer (MS4) Sewershed. This data is a requirement of the District's MS4 Permit. It is used for stormwater management and all aspects supporting efforts to comply wiht the Clean Water Act in the District.

为便于理解，本图层已由MS4污水汇水区（MS4 Sewer Shed）更名为市政分离式雨水污水管网（Municipal Separate Storm Sewer，简称MS4）汇水区。本数据集为辖区MS4许可证的法定必备数据，可用于雨水管理，以及支撑辖区内落实《清洁水法》（Clean Water Act）各项要求的全流程相关工作。