Bregenzer Ach

The Bregenzer Ach (also: Bregenzer Ache) is the main river of the Bregenz Forest (Bregenzerwald) in the Austrian state of Vorarlberg. It is a tributary to Lake Constance and the River Rhine, respectively.

Bregenzer Ache between Mellau and Bezau

Bregenzer Ache (right) enters Lake Constance east of the Alpine Rhine in Hard

Bregenzer Ach
Mouth of the river on Upper Lake Constance
Location
Country	Austria
State	Vorarlberg
Physical characteristics
Source
• location	Mohnenfluh in the Bregenz Forest Mountains near Schröcken
• elevation	2,400 m (7,900 ft)
Mouth
• location	Lake Constance at Hard
• coordinates	47°30′12″N 9°41′37″E
• elevation	395 m (1,296 ft)
Length	67.0 km (41.6 mi) [1]
Basin size	832 km2 (321 sq mi) [1]
Basin features
Progression	Lake Constance→ Rhine→ North Sea
Tributaries
• right	Weißach, Subersach

Geography

The source of the river is above the town of Schröcken, at an altitude of about 2,400 m (7,900 ft).^[2] The river is 67 km (42 mi) long and drains almost the entire area of the Bregenz Forest. Its mouth on Upper Lake Constance (Obersee) is near Bregenz and lies east of the outflows of the rivers Dornbirner Ach and Alpine Rhine. The outflow of Lake Constance is the High Rhine.

See also

• Bregenz Forest Mountains
• List of rivers of Austria

References

1. Complete table of the Bavarian Waterbody Register by the Bavarian State Office for the Environment (xls, 10.3 MB)
2. "Bregenzer Ach in Österreich, Vorarlberg - alpen-guide.de". www.alpen-guide.de. Retrieved 2 March 2022.