Springs and swallow holes in karst regions

The Karst springs and swallow holes layer shows the main points where groundwater emerges from the karst system as well as important infiltration points. Distinctions are made between tapped and untapped as well as temporary and permanent springs. The karst springs are linked to the associated karst catchments: When a spring is selected, the catchment from which it is fed is highlighted. The information in the categories Karst regions and Karst groundwater, respectively, is based on hydrogeological 3D models (KARSYS approach). It was developed, with the support of the cantons, by the Swiss Institute for Speleology and Karst Studies SISKA and is published by the Federal Office for the Environment FOEN.