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Storm Surge Risk Areas
This data reflects areas with a risk of storm tide flooding from hurricanes, based on potential storm tide heights calculated by the National Weather Service's SLOSH (Sea, Lake,... -
Wetland Creation
This feature class is a GIS point layer containing potential wetland creation/mitigation sites assessed by Wetland Studies and Solutions, Inc. (WSSI). -
MS4 Sewer Shed
The dataset contains locations and attributes of the drainage areas of MS4 outfalls. -
Storm Drain Marker Installations
Storm Drain Marker Installations is a data layer showing where storm drain markers were installed on storm sewer catchments. Markers indicate that the sewer catchments drain to... -
Impervious Surface 2015
The dataset contains basemap (planimetric) features that are typically classified as impervious surface captured in 2015., created as part of the DC Geographic Information...