The overarching objective of Digital Twin Earth (DTE) Hydrology Evolution project has been to prototype a full advanced end-to-end demonstrator of DTE over the full Mediterranean region at high resolution in space and time (targeting 1 km and 1 hour) by extending the successful implementation of Digital Twin Earth Hydrology project that has been carried out over the Po River Valley in northern Italy. Specifically, DTE Hydrology has demonstrated the potential to advance towards an end-to-end reconstruction of the hydrological cycle at high resolution in space and time by an effective combination of state-of-the-art EO data, in situ observations, advanced hydrological and hydraulic modelling, AI and advanced digital platform capabilities. Authors: Luca Brocca, Stefania Camici, Christian Massari, Angelica Tarpanelli, Luca Ciabatta, Jacopo Dari, Sara Mondanesi, Hamidreza Mosaffa, Paolo Filippucci (CNR-IRPI), Lorenzo Alfieri, Francesco Avanzi, Simone Gabellani (CIMA), Dominik Rains, Diego Miralles (UGent), Mariette Vreugdenhil, Raphael Quast, Bernhard Raml, Samuel Massart (TUWien), Simone Mantovani (MEEO), Alexander Jacob (EURAC) DTE Hydrology Evolution, Final Report, Deliverable D7.1