Geological Survey of Slovenia (GeoZS) has a long history of collecting geological data. But the potential of gathered data is far from being used. One of the important reasons for that is a low capability in upgrading data into information customised to the user (stakeholder) needs. There is a strong need for tools creating, exporting and visualizing the 3D geological models which could be further used as a geometric base for numerical 4D (e.g. groundwater flow) simulations. The area of our interest in this COST action ‐ the city of Ljubljana is characterised as tectonic depression, formed by tectonic subsidence and gradual filling by alluvial and lacustrine sediments. It is a complex geological situation and to maximise the use of geological information for city needs advanced procedures and tools are required.
GOCAD® software enables subsurface modelling for geological, geophysical and reservoir management purposes. It has been used by British Geological Survey (BGS) for the past decade for the construction of 3D geological models and as a data integration and visualisation platform. Exchange of knowledge and experiences on using the software would contribute to better use of geological data in urban planning procedures.