Catchments in karst regions

The Karst catchments layer depicts those areas where seepage water flows into a specific spring and feeds it. Catchments can occasionally overlap, namely where sections of them drain towards different karst springs simultaneously (diffluence). The karst catchments are linked to the Karst springs: when a catchment is selected, the karst springs fed by it are 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.