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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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Strahler stream order
Regions and cities, Environment
The stream order according to Strahler specifies the degree of branching of a hydrographic network. It forms the basis for morphological studies and descriptions of a watercours...
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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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Hydrogeological map of Switzerland 1:100000
Regions and cities, Environment
Published by the Federal Office for the Environment FOEN, the specialist office of the Swiss Geological Survey responsible for hydrogeology.The hydrogeological map 1:100,000 sho...
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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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Nitrogen Deposition
Regions and cities, Environment
The map shows the modelled total deposition of nitrogen for the year 2020 in a resolution of 500m as a sum of wet, dry and gaseous deposition. Nationwide deposition in 2020 amou...
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Water availability for plants
Agriculture, fisheries, forestry and food, Regions and cities, Environment
Too little water is available to the trees more and more often: •The vegetation and soil release water into the atmosphere, even moreso the warmer and drier the air. Plants evap...
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Federal Inventory of Fens of National Importance
Regions and cities, Environment
Fens are vestiges of earlier natural and cultural landscapes and are in sharp decline. They are home to highly-adapted symbiotic communities of plants and animals that include a...
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Federal Inventory of Reserves for Waterbirds and Migratory Birds of internati...
Regions and cities, Environment
Switzerland is especially important as a wintering and resting site for various migratory waterbirds. As a result, in 1974 the Federal Council signed a convention on watercourse...
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Federal Inventory of Hunting Ban Reserves
Regions and cities, Environment
Federal hunting bans have existed since 1875 and served the purpose of raising the populations of chamois, red deer and roe deer as well as ibex (cloven-hoofed game), which had ...
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Federal Inventory of Floodplains of National Importance - Appendix 2
Regions and cities, Environment
Floodplains, namely natural habitats in the flood zones of watercourses, are in decline. The scientific inventory of floodplains was commissioned by the FDHA in May 1981 and com...
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Federal Inventory of Floodplains of National Importance
Regions and cities, Environment
Floodplains, namely natural habitats in the flood zones of watercourses, are in decline. The scientific inventory of floodplains was commissioned by the FDHA in May 1981 and com...
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Daytime road traffic noise exposure
Regions and cities, Environment
The map shows the daytime road traffic noise to which the population is exposed. The data is based on area-wide model calculations (sonBASE). Switzerland's entire road network, ...
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Water availability in the soil (site water balance)
Agriculture, fisheries, forestry and food, Regions and cities, Environment
The trees often have less water available during the vegetation period. •The water supply during the vegetation period is decisive for the growth and vitality of the forests. Th...
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Nighttime road traffic noise exposure
Regions and cities, Environment
The map shows the nighttime road traffic noise to which the population is exposed. The data is based on area-wide model calculations (sonBASE). Switzerland's entire road network...
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Ramsar sites in Switzerland
Regions and cities, Environment
To protect wetlands, particularly because they are habitats for waterbirds and migratory birds, an international convention was signed in 1971 in Ramsar, Iran. Switzerland ratif...
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