Hydrogeology of Germany 1:1,000,000 (HY1000) (WMS)

In the map, all strata are first classified in the four main types “pore aquifers”, “combined pore and fractured aquifers”, “fractured and karst aquifers” and “aquitards and aquicludes”. Further differentiation is made depending on the areal extent and productivity of the aquifers according to the classification of the Standard Legend for Hydrogeological Maps (SLHyM). The productivity classes have been derived from permeability values. In addition, the surface strata are divided into 19 different types of consolidated or unconsolidated rocks and four types of covering layers. Furthermore, the map shows salinity zones of near-surface groundwater in inland areas, as well as zones of saltwater intrusions along the coast. Areas in which groundwater is affected by mining are also shown. The map “Hydrogeology” is based on the digital Geological Map of Germany 1:1,000,000 (GK1000) published by BGR in 1993. The digital GK1000 contains attributes for the stratigraphy, lithology and genesis of the rocks.