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The Joint Danube Survey 5 (JDS5), the world’s most comprehensive investigative surface-water monitoring effort, will officially kick off on 1 July 2025 in Vienna. This large-scale scientific survey will bring together experts from 14 countries to assess the health of the Danube River and its major tributaries.

Rivers are a natural resource that have been a focal point of transboundary governance for centuries. It is challenging to manage them for the benefit of riparian communities – especially if they are transboundary. This requires the development of a water infrastructure to harvest the socioeconomic benefits, while at the same time protecting the ecosystem for future generations.

River Basin Organizations (RBOs) have been established in many of the world’s basins to better coordinate different stakeholders’ actions and foster cooperation instead of conflict. Based on the experiences of several RBOs worldwide, several key characteristics for their effectiveness can be identified.

The Danube River flows into the Black Sea at the Danube Delta, making the Black Sea the receiving sea for the Danube's water. A receiving sea refers to the body of water into which a river or other watercourse empties its flow. In this context, the Black Sea serves as the final destination for the waters of the Danube River.