Groundwater Vulnerability Card: the naturally salinised zones

The map of the vulnerability of the groundwater of the Flemish Region can be defined as a map of the level of risk of contamination of groundwater in the upper water layer by substances that penetrate from the soil into the ground, only taking into account static parameters. This map can later serve as a basis for a more detailed map, which can also include dynamic and hydrochemical factors. Where, however, the top recoverable aquifer is naturally insulated (>>The naturally salinated zones This layer shows the zones where the groundwater in the first aquifer is naturally silted.