Coastal low-lands are densely populated areas characterized by large economic activity. The shallow subsurface plays an important role because of geotechnical requirements for the foundation of structures and its potential for natural resources, such as sand, gravel, and groundwater. The application of geo-scientific data requires that the subsurface is represented as 2D and 3D models displaying the stratigraphie relations of sedimentary rock units, both on-and off-shore.