- 
  
    Federal
ETOPO1 1 Arc-Minute Global Relief Model
National Oceanic and Atmospheric Administration, Department of Commerce —
In August 2008, the National Geophysical Data Center (NGDC), an office of the National Oceanic and Atmospheric Administration (NOAA), developed the ETOPO1 Global... - 
  
    
Topography Hydro Breaklines - 2018
District of Columbia —
The dataset contains hydro-breaklines that were collected in 2D as vector line work, using a combination of classified lidar dataset, intensity images, shaded relief... - 
  
    
Topography Hydro Breaklines
District of Columbia —
The dataset contains hydro-breaklines that were collected in 2D as vector line work, using a combination of classified lidar dataset, intensity images, shaded relief...