The Hydrological Yearbook gives an overview of the hydrological situation in Switzerland. It shows the changes in water levels and discharge rates from lakes, rivers and groundwater and provides information on water temperatures and water quality of the principal rivers in Switzerland.
Informations about the actual situation and historical data
Older hydrological yearbooks
This publication, which first appeared in 1917, has been continually adapted to meet changing needs and to reflect the introduction of new data-processing tools. The Yearbooks can be ordered from the FOEN, and the editions produced since 1996 are also available online in PDF format.
Last modification 02.07.2018