Draught inspections of dikes and levees is an important task for waterboard in the Netherlands. The Dutch waterboard Rivierenland has collected hydrological data in various dikes, and the project conducted by Nectaerra entailed the hydrological analysis of that data (piezometers, rainfall, tensiometers and soil moisture) to help understand the unsaturated hydrological processes in those dikes as they wet and dry. Factual draught of the dikes was analyzed and a relationship with precipitation deficit was sought in order to upscale the finding to other dikes.