Brussels-Capital Region : The Digital Terrain Model (DTM) describes the three-dimensional shape of the surface of the Earth (topography of the surface). The Digital Terrain Model (DTM) is available in three different representations: - Elevation - vector elements; - Elevation - Grid; - Elevation - TIN.

Brussels-Capital Region: spatial extents outcropping under the quaternary units of the Stratigraphic Units of the Brussels-Capital Region (SU/BCR). This data is limited to the Brussels-Capital Region’s border extended with a 500 m buffer zone. The hydrogeological unit (HU/BCR) of each SU/BRC is indicated in the attribute data. These spatial extents were extracted from the BruStrati3D v1.1 geological model. This data is generated from models and may contain errors, inaccuracies and gaps. It has informative value and may under no circumstances replace a study carried out by an expert. Bruxelles Environnement cannot be held liable for the consequences of the use of this information.

Brussels-Capital Region : Brussels-Capital statistical areas are grouped to form the districts of monitoring. Monitoring the neighborhood is an urban observation tool to help track and understand the evolution of Brussels districts in different aspects (demographic, social, health, economy, housing, mobility, quality of life, participation, ... ) to improve the efficiency of urban policy and help guide public and private investment in urban renewal ...

Brussels-Capital Region: Contour lines give an overview of the real ground on a topographic map. A contour line is the intersection of real terrain with a horizontal plane of given elevation. Contour lines are obtained from the Digital Terrain Model (DTM).

Brussels-Capital Region : groundwater catchment sites protection area 3 (i.e. extraction wells and drainage gallery) in the Brussels-Capital Region. Those site was defined in the Brussels-Capital Government decree of 19 September 2002 delimiting a groundwater catchments protection area at the “Bois de la Cambre” and in the Sonian Forest (Belgian Monitor: June 10, 2008)

Brussels-Capital Region : Entity Address Point (ADPT) is the location of the address points of the Brussels-Capital.