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Base areas (catchment areas) HADES
Regions and cities, Environment
The base areas form the lowest layer of the system of catchment areas that describe Switzerland’s hydrographical structure (Hydrological Atlas of Switzerland, HADES). As many un...
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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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Kenngrössen kleiner Einzugsgebiete
Environment
Für den Atlas wurde ein drei Ebenen umfassendes räumliches System von Einzugsgebieten entwickelt: Die grossen Einzugsgebiete (Flussgebiete) mit Flächen von meist mehreren 1000 k...