Dike reconstruction is an ongoing and massive effort in the Netherlands. The strength and integrity of dikes are strongly influenced by the position and development of groundwater in dikes under extreme conditions. Hydrogeological analysis and modeling (Modflow) was done for the waterboard and their civil contractor to assess the groundwater in a dike just outside the city of Utrecht. This lead to a positive adjustment of the previously determined (general) schematization of the groundwater.Projects