The International Commission for the Protection of the Danube River (ICPDR) is an international organisation with its permanent secretariat in Vienna.It was established by the Danube River Protection Convention, signed by the Danube countries in Sofia, Bulgaria, in 1994.. The TransNational Monitoring Network (TNMN) began in 1996, and the Accident Emergency …

This is a list of tributaries of the Danube by order of entrance.. The Danube is Europe's second-longest river.It starts in the Black Forest in Germany as two smaller rivers—the Brigach and the Breg—which join at Donaueschingen, and it is from here that it is known as the Danube, flowing generally eastwards for a distance of some 2,850 km (1,770 mi), passing through several …