HCOV_0800, base of the Ieperian Aquifer

Flanders is made up of a variety of aquifers (sand, gravel, chalk, solid rock,...) and regionally occurring non-aquifers (e.g. clay). The sequence of these aquifers and aquitards has its own coding in Flanders: the Hydrogeological Coding of the Underground of Flanders (HCOV coding). The HCOV coding is made up of hydrogeological main, sub- and basic units. The main unit groups a sequence of geological layers that have the same hydrogeological properties and thus form one whole. HCOV_0800 (Ieperian Aquifer) is rather limited in size and contains the sands belonging to the Tielt Formation. The Ieperian Aquifer is considered as the main unit since it is of great hydrogeological importance in some parts of West and East Flanders, but is not further split. This hydrogeological main unit is formed by the Sand of Egem and the Sand of Mont-Panisel, both belonging to the Member of Egem. The dataset “HCOV_0800, base of the Ieperian Aquifer” shows in a grid per grid cell the altitude value (in m TAW) of the lower limit of this hydrogeological layer.