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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.

The project involves 15 partners from 8 countries and aims to restore and conserve 34 islands from Germany to Romania. With the support of the EU Commission, the International Commission for the Protection of the Danube River, and the Ramsar Convention, the LIFE WILDisland project is set to become a great example of transboundary cooperation.

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.

Rivers, lakes, transitional and coastal waters, as well as groundwater, are vital natural resources. A significant proportion of water resources are exposed to environmental pollution or other potentially damaging pressures. Protecting and improving the waters of the Danube River Basin is therefore essential for the natural environment, the sustainable development of the region and the long-term health, well-being, and prosperity of the population.

A recent large-scale modelling study has shown that restoring floodplains and reconnecting cut-off water bodies with the Danube River, and its tributaries could play a significant role in improving water quality and removing nitrate pollution in the Danube River Basin.