Current Elevation File Netherlands DTM

The Current Height File Netherlands DTM (AHN) is the digital height map of the ground level for the whole of the Netherlands. The AHN raster files have a resolution of 0.5 metres. It contains detailed and precise height data determined with a minimum of 10 height measurements per square meter. The height is measured with laser altimetry: a technique in which an aircraft scans the earth's surface with a laser beam. 3D point clouds and grids were created from the measured heights (points). AHN is a collaboration between the provinces, central government and the water boards. The elevation file AHN4 DTM ground level grid is the grid produced by classifying points as "ground level" and converting them to a grid based on a Squared IDW method. No further edits have been made. Points that are omitted are objects such as trees, buildings, bridges, water and other objects. The current AHN is version 4, this version was obtained for the years 2020, 2021 and 2022. For more information about the AHN see https://ahn.nl/ahn-4.