For the Water Framework Directive (WFD) spatial data on groundwater bodies (GWBs) the borders of polygons are their projection on the surface. As GWBs are three-dimensional entities but represented as two-dimensional polygons, it is necessary that multiple overlapping groundwater bodies at different depths with non-identical boundaries can be distinguished in different horizons (layers), the reporting of groundwater bodies horizons is


Published: 15 May 2024
Temporal coverage: 2016-2024