3rd Joint Danube Survey - Scientific results

In 2013, the 3rd Joint Danube Survey (JDS3) took place. It was the world biggest river research expedition of its kind. The results were published in 2015 in a comprehensive report which can be downloaded from the JDS3 webpage: http://www.danubesurvey.org/.
Have a look at "results" for the scientific report and further information material.