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Vienna, 1 July 2025 (Motto am Fluss) - Held every six years, the Joint Danube Survey (JDS) builds on the legacy of its predecessors and brings together experts from across the Danube River Basin and beyond for its implementation. The Survey conducts the most comprehensive scientific analysis of Europe’s second-longest river. Today marks the official launch of the fifth edition of this unique initiative: JDS5.

Paris, 12 June 2025 – As UNESCO celebrates 60 years of global water science and the 50th anniversary of the International Hydrological Programme (IHP), the ICPDR proudly contributed to this international milestone by co-hosting a side event that placed the Joint Danube Survey 5 (JDS5) firmly in the spotlight.

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.

Building on the successes of the Danube Hazard m3c project, the Tethys project was launched in January 2024. Funded by the Danube Regional Programme, Tethys will bring together 13 project partners and 10 associated strategic partners to address hazardous substances pollution in the Danube River Basin.

Building on the successes of the Danube Hazard m3c project, the launch of the Tethys project is set to take place on April 11-12, 2024, in Vienna. Funded by the Danube Regional Programme, Tethys will bring together 13 project partners and 10 associated strategic partners to address hazardous substances pollution in the Danube River Basin.

Sub-basins are smaller working units within a larger river basin or catchment area. They represent a distinct geographical area that is delineated based on the natural drainage patterns of rivers and their tributaries. Sub-basins are used to facilitate the management and assessment of water resources, allowing for more focused and localized analysis and planning within the broader context of the overall river basin.