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Hail hazard on a reference area of 100m2: hail size with 50-year return period
Regions and cities, Environment
The hail hazard maps show statistically estimated return values of the hailstone size LEHA-100 for the 50-year return period. LEHA-100 describes the largest hailstone size to be...
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Hail hazard on a reference area of 100m2: hail size with 100-year return period
Regions and cities, Environment
The hail hazard maps show statistically estimated return values of the hailstone size LEHA-100 for the 100-year return period. LEHA-100 describes the largest hailstone size to b...
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Invasive alien plants - map of the potential area Cabomba caroliniana
Regions and cities, Environment
The set of invasive alien plants shows the maps of the potential areas of 56 alien plants species present in Switzerland as well as some invasive species present in neighboring ...
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Exceedance of critical loads for nitrogen
Regions and cities, Environment
Excessive deposition of reactive nitrogen compounds (NO₂, NO₃⁻, HNO₃, NH₃, NH₄⁺) causes eutrophication (over-fertilisation) of sensitive ecosystems, contributes to soil acidific...
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Precipitation sum April-August, period 2070-2099, Scenario RCP 8.5
Regions and cities, Environment
The map shows the precipitation sum (in mm) for the months April to August calculated for the period 2070-2099. The precipitation anomalies of the climate scenario were added to...
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Invasive alien plants - map of the potential area N.N.
Regions and cities, Environment
The set of invasive alien plants shows the maps of the potential areas of 56 alien plants species present in Switzerland as well as some invasive species present in neighboring ...
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Alpine pastures protected by livestock guardian dogs
Regions and cities, Environment
The return of large predators to Switzerland has led to the use of livestock guardian dogs on our alpine pastures. Herd guards are used to protect livestock against larger preda...
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Amphibian migration conflicting with traffic
Regions and cities, Environment
Since the mid-1950s, the number of amphibians being killed on roads has increased dramatically. Every year, hundreds of thousands of amphibians cross roads in Switzerland during...
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Seismic zones according to the SIA 261 standard
Regions and cities, Environment
Map of seismic zones from the SIA 261 Standard “Actions on Structures” (2020). A design value is specified for the horizontal ground acceleration agd (in m/s2). This design valu...
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Warning Forest Fire Danger
Agriculture, fisheries, forestry and food, Regions and cities, Environment
The FOEN's forest fire danger warning contains the general daily forest fire danger based on meteorological data and the resulting forest fire indices.
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Assessment of the Chemical Water Status: Ammonium
Regions and cities, Environment
Within the National Surface Water Quality Monitoring Programme (NAWA), water quality is recorded jointly by the federal and cantonal authorities at around 100 monitoring station...
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Habitat Map of Switzerland
Regions and cities, Environment
The dataset maps Swiss habitats according to the TypoCH classification ('Lebensräume der Schweiz', Delarze et al. 2015) area-wide, to at least the second level of detail of the ...
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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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Ammonia Concentration
Regions and cities, Environment
Ammonia can harm plants and animals and contributes to elevated nitrogen deposition. Critical levels for ammonia are established in the framework of the UNECE convention on long...
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Assessment of the Chemical Water Status: Total Phosphorus
Regions and cities, Environment
Within the National Surface Water Quality Monitoring Programme (NAWA), water quality is recorded jointly by the federal and cantonal authorities at around 100 monitoring station...
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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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Assessment of the Biological Water Status: Macrophytes
Regions and cities, Environment
Within the National Surface Water Quality Monitoring Programme (NAWA), water quality is recorded jointly by the federal and cantonal authorities at around 100 monitoring station...
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Invasive alien plants - map of the potential area Solidago gigantea
Regions and cities, Environment
The set of invasive alien plants shows the maps of the potential areas of 56 alien plants species present in Switzerland as well as some invasive species present in neighboring ...
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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...
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Invasive alien plants - map of the potential area Solidago canadensis
Regions and cities, Environment
The set of invasive alien plants shows the maps of the potential areas of 56 alien plants species present in Switzerland as well as some invasive species present in neighboring ...
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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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Monthly rainfall erosivity (R-factor) maps of Switzerland in MJ mm ha⁻¹ h⁻¹...
Regions and cities, Environment
<p>Monthly rainfall erosivity maps (R-factor maps) of Switzerland with a spatial resolution of 100 m. The maps show the spatial and seasonal variability of rainfall erosivity in...
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Balance areas (catchment areas) HADES
Regions and cities, Environment
The balance areas form the middle layer of the system of catchment areas that describe Switzerland’s hydrographical structure (Hydrological Atlas of Switzerland, HADES). They ar...
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Invasive alien plants - map of the potential area Reynoutria japonica
Regions and cities, Environment
The set of invasive alien plants shows the maps of the potential areas of 56 alien plants species present in Switzerland as well as some invasive species present in neighboring ...