The U.S. Geological Survey has free maps that might come in handy. The public topoBuilder app is now offering custom maps ...
A digital map of the elevation of an area on the earth. The data are either collected by a private party or purchased from an organization such as the U.S. Geological Survey (USGS) that has already ...
The US Geological Survey (USGS) has a program called the 3D Elevation Program (3DEP). From the USGS website: The 3D Elevation Program (3DEP) initiative is being developed to respond to growing needs ...
Bowman Consulting Group Ltd. has been chosen by the U.S. Geological Survey (USGS), in collaboration with Merrick & Company, to lead aerial lidar data collection for the 3D Elevation Program (3DEP), a ...