Date (Creation)

2026-02-22

Date (Revision)

2026-02-22

Citation identifier

BE.NGI-IGN / 24b4a487-484e-11f1-a0b1-847b573ec00f

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
National Geographic Institute	Charlotte Gilon	products@ngi.be	Custodian

Maintenance and update frequency

Biannually

GEMET - INSPIRE themes, version 1.0

• Elevation

Belgian Federal Thesaurus

• Federal viewer
• Geology and physical relief

Data.gov.be themes

• Environment

INSPIRE feature concept dictionary

• Elevation Grid Coverage

GEMET - Concept themes, version 4.01

• federal government
• relief (land)
• altitude

Spatial scope

• National

Keywords

• altitude, digital terrain model

Use constraints

Other restrictions

Other constraints

•The custodian of the resource holds the rights of property (including the rights of intellectual property) to the geographic files

•The custodian grants the user the right to use the data for his internal use.

•Commercial use of the data under any form is strictly forbidden

•Custodian’s name must be mentioned each time the data are being used publically.

Access constraints

Other restrictions

Other constraints

No limitations on public access

Use limitation

•The custodian of the resource holds the rights of property (including the rights of intellectual property) to the geographic files

•The custodian grants the user the right to use the data for his internal use.

•Commercial use of the data under any form is strictly forbidden

•Custodian’s name must be mentioned each time the data are being used publically.

Spatial representation type

Grid

Distance

5  m

Language

English

Character set

8859 Part 15

Topic category

• Elevation

Description

Belgium

Unique resource identifier

EPSG:3812

Distribution format

Name	Version
TIFF
Esri Geodatabase

Hierarchy level

Dataset

Statement

The product called DTM 5m indicates the height of the ground compared to the Belgian zero level (fictitious zero-D of Uccle). In other words, it is the orthometric height, commonly known as height.

The source data used to produce this DTM are the DTM at a 1m-resolution from the regions: data from Digitaal Vlaanderen (former AIV and former AGIV) for the Flemish Region, data from the SPW for the Walloon Region and data from Paradigm for the Region of Brussels-Capital. These regional DSM are derived from the clouds of points obtained during the LiDAR campaign (flight of 9 October 2021 for Brussels, from 19 February 2021 to 5 March 2022 for Wallonia and from 20 February 2013 to 20 April 2015 for Flanders).

As the Flemish and Brussels regional bodies deliver their products in Lambert 72, the NGI reprojected those in Lambert 2008 and achieved an interpolation in order to obtain a product with round coordinates, and then gathered them with the product of the Walloon Region (already in Lambert 2008) so that the newly created DTM covers the whole Belgian territory.

These source data are gathered and processed in order to obtain a homogeneous and regular grid with every meter a point in X and Y indicating the height of the ground level.

This grid makes the product DTM 1m. This product comes directly from the regional data and is not updated.

The DTM 1m is resampled by bilinear interpolation in order to obtain the same type of grid at a 5m-resolution. This is also improved and updated in-house using direct photogrammetric surveys of points and structure lines based on the most recent aerial photographs in order to create the product DTM 5m. The DTM 5m consists of a compilation of the best available data, and these are constantly updated and improved.

LiDAR data coming from regions do not stop at borders, the coverage of the data extends beyond the limits of Belgium and offers a buffer of variable size all around Belgium.

Metadata

File identifier

24b4a487-484e-11f1-a0b1-847b573ec00f XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2026-06-10T14:18:48

Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
National Geographic Institute	Floor Van Damme	metadata@ngi.be	Point of contact

Other language

Language	Character encoding
French
Dutch; Flemish
German
English	UTF8