Indicator water

Discharge forecasts

Warnings and alerts are important in order to keep flood damage as small as possible. These are based on, among other things, forecasts of discharge rates and lake water levels. In order to issue warnings at the right location, the spatial resolution of hydrological forecasts must be as high as possible. It is therefore desirable to receive hydrological forecasts from as many gauging stations as possible along the larger waters of Switzerland.

Assessment of the state
medium medium
Assessment of the trend
unsatisfactory unsatisfactory
Goal by 2021 2021: 51 Number of stations with published forecasts 2019: 35 Number of stations with published forecasts 2018: 33 Number of stations with published forecasts 2017: 33 Number of stations with published forecasts 2016: 30 Number of stations with published forecasts 2015: 29 Number of stations with published forecasts 2014: 28 Number of stations with published forecasts 2013: 26 Number of stations with published forecasts 2012: 26 Number of stations with published forecasts 2011: 26 Number of stations with published forecasts 2010: 8 Number of stations with published forecasts 2009: 8 Number of stations with published forecasts 2008: 8 Number of stations with published forecasts 2007: 8 Number of stations with published forecasts 2006: 8 Number of stations with published forecasts 2005: 8
Hydrological forecasts published on the FOEN homepage

Data for the graph: Excel
Source: FOEN
Stations with published forecasts

Source: FOEN
Comment

Since 2011, the Federal Office for the Environment (FOEN) has a statutory obligation to warn the population and the authorities of flood events. It is thus working to provide hydrological forecasts for the entire territory of Switzerland in the future.

The FOEN currently publishes hydrological forecasts on its home page for 35 stations. Since plans to publish forecasts for 51 stations are in the works, the state can still not be rated as positive. Forecasts for water level monitoring stations in Engadin as well as at all large lakes will follow by mid 2021. In addition, several projects are underway to improve the accuracy of hydrological forecasts. The development in recent years has been too slow, which is why it is rated as unsatisfactory. 

International comparison

Internationally there is no comparable indicator.

Method

The number of stations producing hydrological forecasts published on the FOEN home page is taken as indicator.

Basis for assessment of the trend
Targeted trend Initial value Final value Deviation from theoretical path in% Observed trend Assessment
51 in 2021 2005 2019 71.76% Towards theoretical path unsatisfactory
 
Last updated on: 23.07.2020

Further information

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