Municipal Separate Storm Sewer System (MS4) Data

New York City’s Municipal Separate Storm Sewer System (MS4) Stormwater Management Program is a multiagency effort led by the Department of Environmental Protection (DEP) to reduce pollution in stormwater runoff in the MS4 Area of NYC. This MS4 Map represents the known MS4 outfalls and drainage areas as of August 1, 2020 and provides additional data relevant to the MS4 Permit. The MS4 map only shows areas draining to the Municipal Separate Storm Sewer System. DEP also maintains combined sewer and sanitary sewer systems; these service area delineations are not represented on this map. More information about the MS4 Stormwater Management Program is available at www.nyc.gov/dep/ms4

纽约市市政分流雨水下水道系统（Municipal Separate Storm Sewer System，MS4）雨水管理项目，是由环境保护局（Department of Environmental Protection，DEP）牵头的多机构协作举措，旨在削减纽约市MS4辖区内雨水径流所携带的污染物。本MS4地图呈现了截至2020年8月1日已探明的MS4排污口及其汇水范围，并提供了与MS4许可相关的补充数据。本MS4地图仅展示汇入市政分流雨水下水道系统的区域。DEP同时运维合流下水道与生活污水下水道系统，此类服务区域的划定并未在本地图中予以体现。如需获取MS4雨水管理项目的更多信息，可访问网址www.nyc.gov/dep/ms4