The District Department of the Environment offers the following maps for your review:
- DC Solar Data Map
- DC Solar Map
- DC Detailed Flood Zone Map
- DC Flood Index Map
- DOEE Enforcement Dashboard
- GBIG: Find Green Buildings
- Map of Community Gardens
- Map of Entire Anacostia Watershed
- Map of Known Wetlands
- Map of stormwater Best Management Practices
- Map of Watershed Protection Restoration Projects (tba)
- GIS - Viewer for Impervious Areas in the District
- GIS - Targeted Watersheds in the District
- Anacostia and Potomac River Monitoring Map
Identify Your Watershed
DC Water operates a wastewater collection system comprised of "separate" and "combined" sewers. Since the early 1900's, sewers constructed within the District have been separate systems and no new combined sewer system (CSS) have been built.
Separate systems are comprised of two independent piping systems: one system for "sanitary" sewage (i.e. sewage from homes and businesses) and one system for storm water. In the District, approximately two thirds of the District is served by a municipal separate storm sewer system (MS4). The remaining one-third is served by a CSS. The CSS is outside the legal jurisdiction of the Storm Water Administration.
The MS4 system discharges into portions of the Potomac, Anacostia and Rock Creek watersheds. To learn what watershed you live and weather you live in the CSO or MS4 area.
DC Atlas Pro
The Washington DC Atlas Pro is the modernized replacement for DC Atlas Plus. The Office of the Chief Technology Officer (OCTO) has built this new application to utilize the latest modern GIS tools and provide access to a wide variety of city-maintained GIS data and common GIS tools.
Contact TTY:
711