| Object | Topology | Layer |
| Contour lines | Arc | Topography |
| Geological formations | Polygon | Geology |
| Surface-water | Polygon | Surface-water bodies |
| Street network | Arc | Transportation |
| Hydrographic network | Arc | Hydrography |
| Cities | Point | Place names |
| Climatic measurement stations | Point | Rain water |
| Wells, piezometers | Point | Groundwater |
| Permeability of a layer | Polygon/Arc | Permeability |
| Hydraulic head/piezometric head | Arc | Groundwater Level Measurement |
| Isoline sampling wells | Arc/Point | Hydrochemistry |