A new article, published in Nature, shows how the number of worlds rivers which are free flowing is decreasing. Only 37 per cent of rivers longer than 1,000 kilometres remain free-flowing over their entire length and 23 per cent flow uninterrupted to the ocean! For many people working on rivers, migratory fish and ecosystems around the rivers this is no surprise. In fact, studies within the AMBER project show that the situation in Europe is actually much worse! If you also take smaller barriers into account, and not only large dams, there is hardly any free-flowing river left, at least in Europe. Check the quotes of Carlos Garcia de Leaniz in this well written article:
More articles about the new publication can be read at: