The movement to restore Europe’s vital river systems has achieved an unprecedented milestone in 2025, with a record-breaking 603 river barriers dismantled across the continent. This monumental effort has not only reconnected over 3,740 kilometers of vital waterways but also significantly bolsters climate resilience, enhances water and food security, revitalizes biodiversity, and accelerates the recovery of critically important freshwater ecosystems. The findings are detailed in the newly published Dam Removal Europe 2025 report, which underscores the escalating momentum and profound impact of barrier removal initiatives.
This marks the fifth consecutive year that a new record for river barrier removals has been set, surpassing the previous high of 542 removals in 2024 by an impressive 11%. The report, released today, highlights a transformative trend: river restoration is rapidly moving from a niche concern to a mainstream conservation strategy. Merijn Hougee, Head of International Landscapes at WWF Netherlands, commented on this surge, stating, "These achievements show a true European river restoration success story. From just over 100 annual barrier removals six years ago to more than 600 in 2025, it shows how rapidly river restoration is becoming mainstream and how the momentum is growing. By removing more barriers, we are able to show how biodiversity bounces back and how we can strengthen resilience against climate change."
The consistent upward trajectory signifies a rapidly expanding continental commitment to ecological repair. Since the first comprehensive continental count in 2020, barrier removals have increased sixfold, illustrating a powerful shift in environmental policy and public engagement. The year 2025 also witnessed the formal entry of two new nations into the dam removal movement: Iceland and North Macedonia. Their participation brings the total number of European countries actively engaged in dismantling river barriers to 29, a testament to the growing international recognition of the benefits of free-flowing rivers.
A Surge in National Commitments and Collaborative Action
Sweden emerged as a leader in 2025, spearheading the continent’s efforts with the removal of at least 173 barriers. This remarkable achievement was closely followed by Finland and Spain, demonstrating the power of focused national strategies and coordinated action in driving significant progress. The report’s accompanying data, visualized in Figure 1, illustrates the breakdown of removals per country, with an inset highlighting specific achievements within the United Kingdom.
The vast majority of barriers removed in 2025 were smaller, often obsolete structures such as culverts and weirs. While individually minor, the cumulative impact of removing these numerous impediments is substantial. These removals are frequently highly cost-effective, delivering significant ecological and hydrological benefits when undertaken at scale. Sweden, in particular, focused on dismantling numerous timber dams. These structures are legacies of the country’s extensive history of industrial-scale forestry, where many rivers were channelized and dammed to facilitate the floating of logs downstream. Figure 2, showcasing the Fräkentjärnsdammen timber floating dam on the Vindel River catchment before and after removal, vividly illustrates the transformative potential of such projects.
The Pervasive Problem of River Fragmentation
Despite these celebrated successes, Europe’s rivers remain significantly fragmented. An estimated 1.2 million barriers, encompassing dams, weirs, and culverts, continue to disrupt natural riverine processes across the continent. Many of these structures are now obsolete, serving no practical purpose while persistently impeding the natural flow of water, the transport of vital sediments and nutrients, and the migration of aquatic species.
This extensive fragmentation is a major contributor to ecosystem degradation and has played a critical role in the alarming decline of freshwater biodiversity. According to a recent report by the European Commission, a staggering 42% of Europe’s freshwater fish species are currently classified as threatened with extinction. This crisis underscores the urgency and importance of initiatives like barrier removal.
Chris Baker, Director of Wetlands International Europe, emphasized this point, stating, "Europe’s rivers are fragmented by an estimated 1.2 million barriers – and more than 150,000 of them are already considered obsolete. That makes barrier removal one of the biggest ecological ‘easy wins’ available today. These obsolete barriers no longer provide any benefits, yet they continue to degrade rivers every day they remain standing."
Broader Environmental Goals and Future Outlook
The record-breaking year of barrier removals in 2025 reinforces the critical role of these actions in achieving broader European environmental objectives. The EU Nature Restoration Regulation, which entered into force in 2024, sets an ambitious target to restore at least 25,000 kilometers of rivers to a free-flowing state by 2030. Barrier removal stands out as one of the most effective and direct methods for meeting this crucial target.
Furthermore, these efforts align with global conservation ambitions, contributing significantly to the Freshwater Challenge, which aims to restore 300,000 kilometers of degraded rivers worldwide by 2030. The success in Europe serves as a powerful example of what can be achieved through sustained commitment and coordinated action.
The ongoing momentum in river restoration suggests that 2025 will be remembered as a pivotal year, demonstrating that large-scale ecological change is not only attainable but is already well underway across the continent. The continued dismantling of obsolete barriers promises to revive ailing river ecosystems, enhance their resilience in the face of climate change, and ensure the long-term health of Europe’s vital freshwater resources for both nature and human well-being. The implications extend beyond ecological recovery, impacting water security for agriculture and communities, supporting fisheries, and contributing to more robust natural defenses against floods and droughts.
A Timeline of Progress in River Barrier Removal
The journey towards this record-breaking year has been one of steady and accelerating growth, reflecting a deepening understanding of the ecological and societal benefits of free-flowing rivers.
- 2019: The nascent dam removal movement in Europe was characterized by relatively modest efforts, with annual barrier removals numbering just over 100 across the continent. This period represented the early stages of recognizing the widespread impact of river fragmentation.
- 2020: The first continental count of river barrier removals was conducted, establishing a baseline for future tracking and highlighting the scale of the challenge. This year marked a significant step in formalizing the movement and encouraging greater data collection.
- 2021-2023: A period of consistent growth saw annual removal figures steadily increasing, indicating a growing interest and investment in river restoration projects. Collaboration between conservation organizations, national agencies, and local communities began to strengthen.
- 2024: The previous record was set with 542 barrier removals, demonstrating a significant leap in activity and signaling the approach of a new era in river restoration. The European Union’s adoption of the Nature Restoration Regulation further solidified the political will for such initiatives.
- 2025: The year witnessed an unprecedented surge, with over 600 barriers removed, setting a new continental record. The inclusion of Iceland and North Macedonia, along with Sweden’s leadership, underscored the expanding geographical reach and ambition of the movement.
This chronological progression clearly illustrates the accelerating pace of river restoration, transforming it from a niche conservation effort into a significant force for ecological renewal across Europe. The success of 2025 serves as a powerful testament to the collective efforts and growing recognition of the critical importance of healthy, free-flowing rivers.
