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The Joint Danube Survey 3 (JDS3) was the world’s biggest river research expedition of its kind in 2013, the UN International Year of Water Cooperation. Its results were published in a comprehensive report in early 2015.

In October 2007, a "Joint Statement on Inland Navigation and Environmental Sustainability in the Danube River Basin" was concluded, followed by a series of annual meetings. Here, we present reports, minutes and background materials of these meetings.

The key purpose of Joint Danube Surveys (JDS) is to produce reliable and comparable information on carefully selected elements of water quality for the length of the Danube River, including its major tributaries. Three Joint Danube Surveys have previously been conducted, in 2001, 2007, 2013, and 2019. The 5th Joint Danube Survey is due to launch on 1st July 2025.

The Danube navigation dialogue, concluded in October 2007 with the finalisation of the "Joint Statement", is continued. A first follow-up meeting was held in January 2009 in Budapest, a second one is held in March 2010 in Zagreb, serving to assessing the progress achieved so far and discussing how to improve the application of the "Joint Statement" in waterway projects.

Between April and October 2007, an integrated stakeholder dialogue was conducted by ICPDR, Danube Commissson and the International Sava Commission. Main activities were 3 workshops and the drafting of the Joint Statement document.

JDS 2, the world's biggest river research expedition, was held in 2007. Its goal was to produce comparable and reliable information on water quality and pollution for the Danube and some tributaries. The ICPDR coordinated its implementation. Launched on August 14, 2007 in Germany, three JDS2 boats traveled downstream the Danube, through 10 countries, to the Danube Delta.

In October 2007, a "Joint Statement on Inland Navigation and Environmental Sustainability in the Danube River Basin" was concluded and very positively received by stakeholders. In the years that followed, the responsible government authorities and interest groups met again to discuss the progress achieved so far and how to improve the application of the Joint Statement in waterway projects. These meetings continue.

The investigation of the Tisza River was a follow-up project of the Joint Danube Survey 2001 organised by the ICPDR. The objective of the survey was to investigate the water quality along the river and to promote public awareness. The countries participating at the survey include Romania, Slovakia, Hungary, and Serbia and Montenegro.

The Joint Danube Survey 2001 was carried out by the ICPDR and is the most homogenous analysis of the water quality and the ecological status of the Danube River. Over 140 chemical and biological parameters were analysed and over 40.000 laboratory results were generated.

Historically, the Danube and some of its tributaries have formed important trade routes across Europe. The harnessing of these rivers to facilitate navigation has radically changed their physical and ecological characteristics, while pollution from ships and boats is also a significant problem. In order to address this problem, the ICPDR is undertaking various activities.