The New Danube extends for approximately 21 kilometers, beginning in Langenzersdorf, a town just north of Vienna, after branching off from the main stream.

The New Danube stretches approximately 21.1 kilometers in length, with an average width of around 200 meters, covering a surface area of between 330 and 420 hectares.

The planned measures included the construction of a 21-kilometer relief channel, separated from the main river by a man-made island, to help prevent overflowing.

The project was referred to by the United Nations Human Settlements Programme (UN-HABITAT) as "the first truly multipurpose fully sustainable flood protection scheme.

[6] The river can be accessed by the U1, U2 and U6 metro-lines, which stop at the Donauinsel, Donaustadtbrücke, and Neue Donau stations respectively, as well as by S-Bahn, trams and buses.