Hydrogeological Map of Switzerland 1:500,000

The entire underground of Switzerland is subdivided into ten types of distinct domains, characterised by the nature of groundwater aquifers that they contain – unconsolidated sediments or bedrock – and by the aquifer productivity. The map shows the principal groundwater springs and pumping wells and provides hydrodynamic data for regions of groundwater recharge and discharge. This document is the basis for a good understanding of the demands of optimal protection and management of our groundwater resources.

This sheet indicates the vulnerability of groundwater resources to possible contamination at the national scale. The notion of vulnerability represents an important element in the prevention-based protection of drinking water. This map is intended as an instrument for general planning, informing a wide public audience or teaching.

The two sheet are also published as Plates 8.6 and 8.7 of the Hydrological Atlas of Switzerland HADES (2004) , edited by the Federal Office for the Environment. This subject is also found at: FOEN: Hydrogeological Maps . The Federal Office for the Environment (FOEN) is the center of expertise of the Swiss Geological Survey for hydrogeology.

Both products are part of the GeoMaps 500 series. They are available as printed maps (folded or plano), pixelmaps or (for Groundwater Resources) vector datasets. The backside of both sheets contains text with figures and diagrams for explanations. For further information on the availability and the format of these products please visit the Geological Data Viewer (this application exists only in German and French).

To zoom in, please click on the map sheet index.