Metadata 1534

Areas dedicated to drinking water or curative water supply, which might limit the use of shallow geothermal energy.

DRASTIC parameter R

Groundwater Recharge Coefficient (Rcoef) for the European domain at 1 km spatial resolution for the period 1981-2010. The Rcoef estimate is based on a machine learning approach trained against gridded Rcoef estimates from seven national pilots in Europe. The Rcoef data set i part of a series of gridded datasets established in the TACTIC project for estimating Potential Groundwater Recharge (GWRpot). The data available are AET, Effective precipitation (Peff=Precipitation-AET), Groundwater Recharge coefficie...

A dataset used to display the intrinsic geological and hydrogeological characteristics that determine the ease with which groundwater may be contaminated by human activities.

Assessment of the potential threat of groundwater from pollution (i.e. natural vulnerability) is a necessary base for any type of planning and management of groundwater resources. The ultimate goal of the vulnerability map is the subdivision of an area into several units showing the differential degree of vulnerability. Isolated areas or vulnerability classes are presented in different colors or hatches, very easy to understand for the entire professional public, not just geological (which is very importan...

Type of aquifer media distribution map expressed as an index value according to DRASTIC ranges from 1 to 10. The highest values correspond mainly to unconsolidated detrital and karstified aquifers. The lowest values correspond to loam formations and other low permeability geological units.

Concentration of flow factor map indicates the reduction of protection of the groundwater surface due to karst development. It is expressed as a value according to COP index ranges from 0 to 1, being the range of lowest values (0 - 0.2) the one that indicates a very high reduction of the overlying layers protection (factor O), and the range of the highest values (0.8 – 1) a very low reduction of the overlying layers protection.

Hydraulic conductivity map expressed as an index value, according to DRASTIC ranges from 1 to 10, being 10 the high permeability aquifers (> 1.0*10-2 m/s) and 1 the low permeability aquifers (< 5.0*10-7 m/s).

Depth to groundwater level distribution map expressed as an index value according to DRASTIC ranges from 1 to 10, being 10 the most shallow groundwater level (less than 1.5 m) and 1 the most deepest (more than 50 m).

Impact of the vadose zone map indicates the level of influence of the geological layers above the groundwater level. It is expressed as an index value, according to DRASTIC ranges from 1 to 10, being 1 the areas with confining layers and 10 areas with karst limestone layers.