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Groundwater management

Water management

Water resource management

Digital geological model of Denmark

24. June 2021

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The model displays geological units for the upper 2-300m in 3D in an internally consistent manner. The units are based on a lithostratigraphic classification developed during the model interpretation. This classification was used to interpret more than 20,000 boreholes from the national subsurface database, in about 300 separate regional digital geological models that afterwards were digitally joined together, providing one consistent model.

Point information from boreholes is then used to interpolate the basal surfaces of each unit on raster cells. The combination of all interpolated basal surfaces results in a 3D Digital Geological Model (DGM) of the entire Danish subsurface. Access is available for end users through the Danish Ministry of Environment. This development is a major step forward for local, regional and state uthorities, as well as water utilities, consultants and private stakeholders as a platform and tool for common decision-making support.

Contributors: COWI, Geo, GEUS, NIRAS, Rambøll, IGIS, Ministry of Environment