Topographical catchment areas of Swiss waterbodies 2 km²

The data set ‹sub-basins 2 km²› is the central element of the geodata set. It is made up of a comprehensive mosaic of over 22,000 topographically defined sub-basin areas that can be quickly and simply combined with overall catchment areas in each GIS thanks to its hierarchical structure. The polygons in the overall catchment areas can be freely accessed in a separate data set. This derivative of a geo data set contains a series of already calculated figures for land cover and physical geography. The relevant overall catchment area is presented in the federal map viewer (www.map.geo.admin.ch) by clicking on the layer. Various figures in this region are also visible.