In many European countries waterways are an important heritage asset. Canals and rivers are a significant part of urban and rural history, essential to expanding commercial networks, flood control strategies, agriculture and industrial development. Inland waterways have bequeathed fascinating artefacts to our built environments, including towpaths, bridges, locks, shipyards, slipways, river ports, warehouses, etc: an architecture that has sustained livelihoods for centuries and, more recently, offers opportunities for leisure and recreation. Canals have also served as sites of artistic inspiration, through literature, painting, poetry and song, and therefore are the focus of a unique heritage, both tangible and intangible. However, whilst the cultural heritage of major rivers and canals is well known and publicly accessible, the heritage of minor rivers and canals is not shared so readily. As a consequence, the contribution of this important hydrological asset to local and regional sustainable development in Europe has been quite limited until now. The EUWATHER project (European Waterways Heritage: Re-evaluating European Minor Rivers and Canals as Cultural Landscapes) aims to promote knowledge and rehabilitation of the cultural heritage of minor waterways and historic canals in Europe. Its objective is to develop new opportunities for eco-tourism and outdoor recreation as a driver for sustainable development. A number of digital itineraries have been co-designed with local communities, commercial stakeholders and the public sector to generate new ways of approaching this heritage. This includes informing policy-makers and entrepreneurs about strategic investments, drawing up an inventory of waterscape assets and enabling better management and planning of waterways networks. Today, with the spread of digital media and affordable smartphones with near-constant internet access and GPS technology, tourism has taken on new forms. Tourists no longer rely solely on human tour guides or books to introduce them to places of cultural and natural heritage, but have turned to web applications, providing them with maps, lists of attractions and descriptions. The availability of reliable online datasets related to cultural and natural heritage, is therefore of pivotal importance. A preliminary dataset devoted to European minor waterways has been made to provide input for tourist applications, but it can also be used for academic research and archival purposes. The creation of an on-line Spatial Data Infrastructure has resulted from the archival and fieldwork research by the academic teams involved in this project. It brings together the tangible and intangible cultural history of waterscape heritage relating to 11 pilot areas at European level. Such a database is easily accessible to private entrepreneurs in river tourism, to public/private institutions devoted to environmental education, to open air and other museums, and to rural tourism networks, particularly those involving hikers and cyclists. A key output of the project is the Waterways Explorer: an on-line platform where all digitized research materials are available, including a Tool Box for practitioners, in order to help local communities and tourist organizations to create their own itineraries along minor rivers and canals. To ensure that the full impact of the project is achieved, a number of Associated Partners have agreed to participate, using their specific expertise to guide and complement the research, as well as providing access to waterscapes. They have also ensured that the full social and economic impacts of the project are distributed across the four partner countries and beyond.