The Ötztaler Ache is a right tributary of the Inn River

Inn River

The Inn is a river in Switzerland, Austria and Germany. It is a right tributary of the Danube and is approximately 500km long. The highest point of its drainage basin is the summit of Piz Bernina, at 4,049 metres.- Geography :...

 in the Imst (district)

Imst (district)

The Bezirk Imst is an administrative district in Tyrol, Austria. It borders the district Reutte in the north, as well as sharing a small border with Bavaria...

 and flows through the Ötztal

Ötztal

The Ötztal is a 65-kilometer long alpine valley in the Austrian state of Tyrol. The Ötztaler Ache river flows through the valley in a northern direction. The Ötztal separates the Stubai Alps in the east from the Ötztal Alps in the west. The northern end of the valley is at the confluence of the...

 valley with a length of appr. 35 km. It merges with the Inn River 8 km east of Imst

Imst

Imst is a city in the Austrian federal state of Tyrol. It lies on the River Inn in western Tyrol, some 55 km west of Innsbruck and at an altitude of 828 m above sea-level...

. The river is one of the biggest tributaries with plenty of water. The dangerous water of the river devastated the valley several times but nevertheless rafting – fans love the whitewater

Whitewater

Whitewater is formed in a rapid, when a river's gradient increases enough to disturb its laminar flow and create turbulence, i.e. form a bubbly, or aerated and unstable current; the frothy water appears white...

.