SRTM

Elevation Web Services: Limitations and Prospects Elevation data is necessary for a wide range of geospatial applications such as creating relief maps and rendering 3D visualizations, deriving the slope and aspect of a geographic area, […]

In 2000, I was just finishing a two year stint living in Belgium working on modeling downstream facilities.  Yes, we used close-range photogrammetry.  Really dull technical work, but we succeeded in projects across Europe (Italy, […]