Reservoir water levels
The water levels of Switzerland’s reservoirs are published weekly, as of midnight on Sundays. They are reported both for Switzerland as a whole and for four regions: Valais, Graubünden, Ticino and the rest of Switzerland.
The factsheet contains further details regarding scope, frequency and data sources.
How much water is currently available in the reservoirs?
The interactive website shows the percentage filling level of the reservoirs in Switzerland and in the regions of Valais, Grisons, Ticino and the rest of Switzerland.
Interactive website