Tracking barriers and their impacts on European river ecosystems

The importance of free-flowing rivers that allow free movement of water, sediment, fish and other organisms is increasingly recognised by EU environmental policy, in particular the Water Framework Directive and the biodiversity strategy for 2030. However, the large number of barriers on our rivers has resulted in a loss of river continuity. This briefing addresses the following questions: What is the density of barriers on rivers? What do we know about their impacts on rivers? How can we improve the European knowledge base on barriers in rivers?