About the portal
The Federal Office for the Environment (FOEN) is the publisher of the “Hydrological data and forecasts” Web site. This portal provides current and past hydrological data on rivers, lakes and groundwater in Switzerland as well as forecasts and flood warnings.
Current and past monitoring data are published on the portal.
Current monitoring data (latest measurements and charts) are transmitted directly from the FOEN’s hydrometric stations. The data are raw and not verified prior to publication. For that reason, they may contain errors. Raw data and forecast values are each published in local time (summer / winter time).
Past data have been subjected to a plausibility check and corrected, where necessary. They are published in winter time.
The FOEN strives to publish correct data. However, it cannot be held liable for incorrect data. For more information, see the “Terms and conditions”:
Terms and conditions
The federal government publishes public information on natural hazard warnings on its natural hazards portal:
The federal government’s natural hazards portal www.natural-hazards.ch/
Other current data used by experts and crisis teams to manage events can be obtained from GIN, the Common information platform for natural hazards.
Common information platform for natural hazards (GIN)
Background information on the FOEN’s activities, monitoring networks and methods in connection with water can be found on the FOEN's Web site:
Federal Office for the Environment (FOEN): Topic Water
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