In Brief
- Two large dams have reduced sediment supply to the Danube Delta for decades.
- This sediment loss has caused increased coastal erosion along the delta's seaward edge.
- Ten obsolete dams were recently removed from smaller rivers feeding the delta.
- Dam removals help reconnect fragmented habitats in the Danube Delta region.
Scientists have found that two giant dams on Europe's second-longest river, the Danube, have significantly starved the Danube Delta of sediment over several decades. These dams, including the Iron Gates, trap sediment upstream, preventing its natural flow downstream to the delta.
The decrease in sediment delivery has disrupted the natural balance of the delta, leading to increased coastal erosion where the delta meets the sea. This has important ecological implications for the region, affecting habitats and biodiversity.
In response, authorities have removed ten obsolete smaller dams from tributaries feeding into the Danube Delta. These removals aim to restore continuous river flow and improve habitat connectivity that had been fragmented by the dams.
The interventions highlight efforts to address long-term environmental impacts caused by large-scale engineering works on the Danube River and its delta ecosystem.
