|Countries||Germany and Austria|
|States||Bavaria and Tyrol|
|Length||37.8 km (23.5 mi) |
|Basin size||283 km2 (109 sq mi) |
|Progression||Inn-> Danube-> Black Sea|
It is a 38 km (24 mi) long left tributary of the Inn. It starts as the outflow of the Spitzingsee in southern Bavaria, and flows from North to South to the town of Rattenberg where it merges with the Inn.