Inventory of generalized faults and tectonic boundaries such as associated structural regions in Germany, presented at following scales: 1.) German onshore (1: 2.500.000 - 1: 500000), 2.) Baltic Sea (1:1000000 - 1:250000), 3.) Central German North Sea (1:1000000 - 1:100000), 4.) Entenschnabel region - The northwestern German North Sea sector (1:1000000 - 1:50000).

The S layer represents soil media with direct assignment of S index values according to a proposal made by the HOVER project. Soil media was derived from soil types as provoided as a 1km grid cell raster data product from the Soil Geographical Database of Europe (SGDBE, https://esdac.jrc.ec.europa.eu/content/european-soil-database-derived-data)

The A layer represents aquifer media with direct assignment of A index values for each aquifer material according to the proposal of the HOVER project. The aquifer media scoring was applied to IHME1500 lithology level 2 information.

The I layer represents the impact of the vadoze zone and was derived from the soil parent material information of the European Soil Regions Map 1:5 Millon (ESRM5000, https://www.bgr.bund.de/EN/Themen/Boden/Projekte/Informationsgrundlagen_abgeschlossen/EUSR5000/EUSR5000_en.html) according to a scoring scheme proposed by the HOVER project

The R layer represents the mean annual net groundwater recharge for the climatic normal period 1961 - 1990, scored (classified) for index values 1...10 according to class breaks proposed by the HOVER project. The recharge caluclation was performed on an averaged montly basis using WORLDCLIM 1.4 climate data (precipitation, temperature, downscaled to 1 km resolution, https://www.worldclim.org/data/v1.4/worldclim14.html) and a temperature-based approach to claculate effective precipitation on a monthly basis after Samani and Hargreaves (1985). Annual diffuse net groundwater recharge was then estimated from effective precipitation using several environmental attenuation factors, as deduced from a scheme by Döll & Flörke (2005). Areas delineated by IHME1500 as "no groundwater" are blanked.

The T layer represents topographical information, i.e. the slope angle calculated from GTOPO30 1 km resolution elevation data, classified using class breaks proposed by the HOVER project

The D layer represents depth to groundwater table from the surface, reclassified to D index values from 1 to 10 according to class breaks proposed by Aller et al. (1987).

The C layer represents the hydraulic conductivity of IHME1500 Level 2 legend classes averaged from literature data with direct assignment of the C index following the classification proposal of the HOVER project.

DRASTIC represents the groundwater pollution potential of the upperemost aquifer systems over Europe in five classes 1 - 5 (very low, low, moderate, high, very high) on a 1 km pixel basis. The DRASTIC index according to Aller et al. (1987) is constituated as a weighted linear sum of seven environmental parameters (Depth to water table, Net recharge, Aquifer media, Soil media, Topography/slope, Impact of vadose zone media, Hydraulic conductivity) with parameter classes scored from 1..10 for their specific impact on groundwater pollution potential. The five classes are derived from equal interval slicing of the continuous DRASTIC index

DRASTIC represents the groundwater pollution potential of the uppermost aquifer systems over Europe in five classes 1 - 5 (very low, low, moderate, high, very high) on a 1 km pixel basis. The DRASTIC index according to Aller et al. (1987) is constituated as a weighted linear sum of seven environmental parameters (Depth to water table, Net recharge, Aquifer media, Soil media, Topography/slope, Impact of vadose zone media, Hydraulic conductivity) with parameter classes scored from 1..10 for their specific impact on groundwater pollution potential.