Department of Energy and EnvironmentThe dataset contains locations and attributes of the MS4 outfalls created as part of the Federal MS4 Permit. GPS outfall locations were captured by DC Water, then DC WASA in 2004-2006. A database provided by WASA identified outfalls, drainage structures, and MS4 outfall locations. The data was verified in conjunction between DOEE and DC Water.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/03795a44b05f41a1ae9d46a59a9227d8_68engOpen Data DCPublicMS4 Storm Sewer Outfalls [District of Columbia--Washington]Web servicesDistrict of Columbia--WashingtonDistrict of ColumbiaLast Modified: 2018-10-19