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Grayling population of national importance: distribution area
Regions and cities, Environment
The data on grayling populations of national im-portance includes four subproducts; the distribution area layer includes the sections of watercourses with 20 major grayling popu...
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Grayling population of national importance: spawning grounds
Regions and cities, Environment
The data on grayling populations of national importance includes four sub-products; the spawning grounds layer includes the areas in which natural reproduction occurs. The core ...
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Grayling population of national importance: core areas
Regions and cities, Environment
The data on grayling populations of national importance includes three subproducts; the core zones layer includes the areas of particular importance for grayling populations, ba...
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Grayling population of national importance: larva habitats
Regions and cities, Environment
The data on grayling populations of national importance includes four subproducts; the larva habitats layer includes the areas in which larva were monitored. The core data come ...
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NAQUA-QUANT Monitoring sites (NAQUA National groundwater monitoring)
Regions and cities, Environment
Groundwater is the result of the percolation of rainfall and the infiltration of river water. Groundwater levels and spring discharges therefore respond – though possibly with a...
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Stations hydrological forecasts
Regions and cities, Environment
The map provides an overview of stations forecasted by FEWS.
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Map of potential permafrost distribution
Regions and cities, Environment
The map shows the potential permafrost distribution in Switzerland based on modelling. In Switzerland, above 2400 metres the ground can be permanently frozen, depending on its g...
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Overland flow map
Regions and cities, Environment
The areas affected by overland flow were determined using a simplified method the over entire Switzerland and Liechtenstein. They were determined by modelling without any verifi...
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Underground flow paths in karst regions
Regions and cities, Environment
The Underground flow paths layer indicates the probable direction taken by the groundwater in karst regions within the catchments towards the relevant spring. These interpretati...
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Extent of groundwater resources in karst regions
Regions and cities, Environment
The Karst water resources layer shows the extent of the water-saturated zone of a karstified aquifer projected to the surface. It is determined by the karst water level and ther...
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Map of past earthquakes in Switzerland and neighbouring regions
Regions and cities, Environment
ECOS09 is the earthquake catalogue of Switzerland and bordering regions. It integrates the following sources: - Macroseismic Earthquake Catalogue of Switzerland (MECOS 02) with ...
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Crayfish plague – Findings in Switzerland
Agriculture, fisheries, forestry and food, Regions and cities, Environment
Proof of the crayfish plague in Switzerland: Geo-referenced locations of populations with test results. The most cataclysmic disease for the European species is the crayfish pla...
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Catchments in karst regions
Regions and cities, Environment
The Karst catchments layer depicts those areas where seepage water flows into a specific spring and feeds it. Catchments can occasionally overlap, namely where sections of them ...
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General situation of groundwater levels and spring discharges
Regions and cities, Environment
The map provides an overview of the current groundwater levels and spring discharges in Switzerland compared with the expected conditions. The data is shown as below, above or e...
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Catchment units in karst regions
Regions and cities, Environment
The Karst catchment units layer consists of the unit areas from which similar groundwater flow behaviour towards the karst spring can be expected. In particular, it allows for t...
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Water temperature of rivers and streams
Regions and cities, Environment
The map provides an overview of current water temperatures in Switzerland's rivers.
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Comparison of discharge and water gauge data with hazard levels
Regions and cities, Environment
The map shows the current discharge at all the stations, as compared with flood hazard levels.
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Water status monitoring stations CH
Regions and cities, Environment
The data set represents the monitoring stations where the water status is recorded. The cantons are responsible for water protection enforcement, as they are for other environme...
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NQStat low-flow statistics
Regions and cities, Environment
A wide variety of parameters may be used to describe low-flow events. The FOEN Hydrology Division's low-flow statistics are based on the recommendations of the German Associatio...
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General situation of rivers and lakes
Regions and cities, Environment
The map shows the current Swissriver discharges and lake water levels compared with the monthly percentiles of the long term hourly averages (expressed in percentiles). The perc...
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Water temperature monitoring stations
Regions and cities, Environment
The data set represents the locations of the stations in the water temperature monitoring network of the Hydrology Department of the Federal Office for the Environment (FOEN). I...
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HQStat flood statistics
Regions and cities, Environment
Data on flood events is managed and statistically evaluated by the FOEN; the findings are made available in the form of result sheets. A systematic statistical evaluation of flo...
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HWGWP flood crest gauge
Regions and cities, Environment
This set of data depicts the locations of the federal flood measuring stations, known as "Hochwassergrenzwertpegel". The data was collected in 2005; readings are no longer being...
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Hydrological study areas
Regions and cities, Environment
Since 1957 the hydrology division of the FOEN has operated a network of hydrological study areas aimed at observing long-term changes in the water regime within Switzerland’s mo...
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Groundwater temperature
Regions and cities, Environment
The map provides an overview of Switzerland's current groundwater temperatures. The calculation is based on percentiles of the dataset for the standard period 1991–2020 or, in t...