Ybbs a.d. Donau
Its source is located on the Zellerrain Pass near Mariazell. The river is called the Weiße Ois in the beginning, then onwards from the border between Lower Austria and Styria to Lunz am See it is called the Ois, and from there until it meets the Danube at Ybbs an der Donau, it is called the Ybbs.
The Ybbs has a strong, meandering course and flows for around 130 km (81 mi) from the South in a northward direction. Along the river there are many metal and lumber industry plants. The most important towns on the Ybbs are Lunz am See, Göstling an der Ybbs, Hollenstein an der Ybbs, Opponitz, Ybbsitz, Waidhofen an der Ybbs, Amstetten, and Ybbs an der Donau.