Source of the Danube of Baden): “Danube, the biggest river of Germany, rises at the Martinskapelle in a wild and lonely area of the Black Forest, is called Brege at its origin and forms the river Danube in Donaueschingen where it is unified with the Brigach." (German original: „Donau, der größte Fluß Deutschlands, entspringt bei der Martinskapelle in einer wilden und einsamen Gegend des Schwarzwaldes, heißt am Anfang Brege… und bildet erst in Donaueschingen, wo sie sich mit der Brigach vereinigt, die Donau.“) The identification of the main spring in the uppermost Bregtal (also called Katzensteig) is dependent on a defining convention: Instead of
International Association for Danube Research International Association for Danube Research The International Association for Danube Research, or IAD, is the oldest NGO of an active network of scientists in the Danube River Basin of Europe. The board of the IAD is composed of the president, vice-president and general secretary, forming the presidium, and currently 12 representatives of member countries. Since 2017 Cristina Sandu is the president and Thomas Hein from BOKU Wien and Wassercluster Lunz the vice-president. Since 2018 Katrin Teubner (PD) from Universität Wien is the general secretary. The names of the country representatives and the expert group leaders can be found at the