In this technical support contract I acted along with Joris de Vente as co-IP. In this project we studied the feasibility of using reservoir altimeter data from remote sensing to calibrate hydrological models. We applied the proposed method in a small subcatchment of the Segura River catchment. The results were published in a report, see below. Furthermore, in this project we updated the SPHY model code, which is published as SPHY v3.0. The model can be downloaded from the SPHY Github repository. The new model code includes two new modules (soil erosion and sediment transport) and improvements related to glacier processes, plant water stress, open-water evaporation and surface runoff. Furthermore, the structure of the model was changed to facilitate future model development.