# Digital Elevation Model (DEM)


A Digital Elevation Model (DEM) is a representation of the bare ground (bare earth) topographic surface of the Earth excluding trees, buildings, and any other surface objects. 

| Study Area | DEM  | Resolution | Access  |
|----------|:----------: |:----------:|:---------: | 
| Global | SRTM | 30m | | 
| Europe | Copernicus EEA | 10m | | 
| Wallonia | LIDAR 2021-2022 | 0.5m | |