The map shows where quick clay has been registered in the National Database for Ground Investigations (NADAG) in Norway. It also displays hazard maps of quick clay from the Norwegian Water Resources and Energy Directorate (NVE).

The Geological Survey of Norway (NGU) has prepared the nationwide map on behalf of the NVE. The map was prepared in 2014 and covers the types of landslides and small to medium-sized floodslides.

The map does not cover quick clay slides, small landslides, and large floodslides in gentle river courses. You can find more information on NVE's website.