<p>Nowadays, how to focus the last geometric documentation techniques applied to cultural heritage, aiming a didactic application, is being a complex process. The development of this purpose must balance research process with the social spreading of the scientific knowledge. Based on this concern, the aim of this research project is the geometric documentation - accompanied by a highlighting and spreading on a web environment - of a representative selection of Roman hydraulic structures. The choice of the sites has been done focusing on archaeological discovers in the Ebro’s Valley, concretely in monuments located in La Rioja, Navarra and Aragon. In this way, the purpose of the project is to document the sites and spread the knowledge about Roman aqueducts, dam, sewers, tanks and cisterns, which is essential to understand the water cycle during the Roman period.</p>