Type of resources
Contact for the resource
The web application G-DOC provides information on all Belgian geodetic reference points. These points can be used as starting points or checkpoints to determine coordinates according to the national reference systems. three groups of geodetic reference points are available: 3D points, altimetric points and planimetric points.
Whole of marks whose height with respect to the zero mark of the second general leveling is known.
This web service allows the visualization of altimetry data. More specifically, it allows to visualize the National Geographic Institute's digital terrain model and the contours associated with it. This service is compliant with the INSPIRE specifications.
The contour lines contain all the lines connecting points with the same elevation, in a model which is used for a cartographic representation of the relief.
The contour lines contain all lines which connect points which are situated on the same altitude, in a model which is used to represent the relief on a large scale.
The DTM is a homogeneous and regular point grid indicating the elevation of the ground level in order to make a model of its surface. The DTM is drawn up by interpolation (adaptable prediction) of raw altimetric data (contour lines, structure lines and spot heights).
Landcover100Map is a digital version of the NGI’s topographic cartography on a scale of 1 :100 000. The images come from the symbolisation of the objects and the themes in the topo-geographic inventory of the Belgian territory (ITGI), which is built and kept up-to-date by the NGI. Landcover100Map is meant for a regional use on a larger scale than the one for Top50Map, typically on the scale of a province. The land use theme is very salient in this topographic cartography. The relief is represented by shadowing.
TopoMaps is a WMS allowing visualizing all images corresponding to the standard topographic cartographies made by the National Geographic Institute. As a result, it allows viewing cartographies on a 1:25 000 scale (Top25Map), on a 1:50 000 scale (Top50Map), on a 1:100 000 scale (Landcover100Map) and on a 1:250 000 scale (Top250Map), as well as the administrative map (AdminMap). With the exception of the administrative map, the cartographies show all themes of the topo-geographic inventory of the Belgian territory (ITGI) which is made and kept up-to-date by the National Geographic Institute: land use, transport, hydrography, buildings and constructions, relief, map lettering and toponyms. The cartographies on the 1:25 000 and the 1:50 000 scales have a low resolution ( a high resolution version is for sale), whereas the small scales are represented with a high resolution, as they can be downloaded for free.
Web service with currently available electronic data related to REGULATION (EU) No 73/2010 on aeronautical data quality requirements and Appendix 8 (Terrain and obstacle data requirements) of Annex 15 to the Chicago Convention.
Top250Map is a digital version of the NGI’s topographic cartography on a scale of 1:250 000. It is the smallest scale used by the NGI to produce a cartographic representation of Belgium. It focuses mainly on inhabited places and transport networks. The whole territory is available in one single file. This map is characterized by the great number of toponyms of inhabited places.