Ziller

The Ziller is a right tributary to the Inn, in the Zillertal in Tyrol, Austria. It is long, and its basin area is. It springs from the main ridge of the Zillertal Alps, and after a few kilometers flowing northwest feeds the Zillergründl Dam. In Mayrhofen it receives the Zemmbach. By Zell am Ziller, it receives the Gerlosbach, before flowing into the Inn by Strass im Zillertal.
For historical reasons, the Ziller—first mentioned in 927 as Zilare—for most of its course makes up the border between the Diocese of Innsbruck on the west and the Archdiocese of Salzburg on the east. The Ziller today shows a good presence of brown trout and rainbow trout, as well as grayling. It is up to wide and deep, and it has an average discharge of.