Territorial Topographic Reference | icgc

Territorial Topographic Reference

Reference topographic base with total coverage of the territory



The reference topographic base with total coverage of the territory of Catalonia constitutes the Territorial Topographic Reference (RTT).



Service features

  • Version: v1.
  • Optimal work scale: 1:5.000.
  • Date of information: 2022.
  • Description: Territorial topography of all Catalonia organized by layers.
  • Download format:  
    • GeoPackage 2D with built-in default styles and project for QGIS.
    • GeoPackage has styles and projects incorporated by default into QGIS.
    • Geodatabase with default styles incorporated into ArcGIS Pro.
    • GeoTIFF. DWG (per municipis), in 2D, in 3D and with extruded constructions (volums).
    • DGN (per municipis), in 2D and 3D.
    • Geopackage 3D.
    • IFC for BIM.


For the correct visualization of the data with the predefined style and other considerations, we suggest consulting the manuals included (annexes) in the technical specifications of this information (Catalan).


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Més informació


Layers available


It includes elements that allow characterizing the relief: point heights, contour lines, slopes, embankments, cuttings, among others.


It includes different hydrographic elements, both natural (rivers, dry riverbeds, coastline, ...) and artificial (reservoirs, irrigation channels, swimming pools, ...).


It includes the elements of the different networks that make up the transport network: road, rail, port, airport and cable. The road network has the necessary attributes for its categorization.


It includes different types of artificial constructions (buildings, walls, electrical towers, warehouses, urban islands, ...), as long as these are not included in the thematic layer of transport.

Land covers

Includes natural (rock, beach, forest, ...) and artificial (open mines, landfills, ...) land covers. 

Geographical names

Include the texts with the place names. The elements are classified geographically based on a coding that identifies the designated geographic elements, and typologically in the recommended fonts and fonts for their representation in order to facilitate the reading and interpretation of the cartography. The geometry corresponds to the line on which the text is placed.

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Plaça de la Imperial Tarraco

RTT, Plaça de la Imperial Tarraco

This organization of the information facilitates an agile and versatile use of the data, since it allows working with all the information at the same time, or making selections by layers of information or by territorial areas, as well as changes in the symbolization. This distribution is prepared to work at scales close to 1: 5,000.

To ensure the most widespread use possible, specific formats are distributed both for users who work with GIS and for users who work with CAD.

The most relevant GIS formats are the Geopackage, which can be exploited from free software, as well as the geodatabase, for users of the ESRI platform. In both cases, the file contains vector data organized in the different thematic layers, as well as metadata tables and descriptions of the attribute values. The files incorporate a stylization, for the free software QGis in the case of the Geopackage, and for ArcGIS Pro in the case of the geodatabase.

For users working with CAD software, DGN (for MicroStation) and DWG (for AutoCAD) formats are distributed, both in 2D and with 3D information. In all cases, the information is grouped by levels with descriptive names and with a symbolization adapted to the target software, as well as the attributes of the different objects incorporated within the file (such as itemtypes in the case of MicroStation and as tags in the case of AutoCAD).

The 3D CAD information is distributed in two versions: a version faithful to the data collected by photogrammetric restitution, where the objects have been digitized with their orthometric height, and which incorporates terrain modeling information for users who are interested in generating their own elevation models. The second version of the 3D formats incorporates transformations for the direct representation of 3D scenes, including the generation of volumes and surfaces.