Weißach (Bregenzer Ach)

Weißach
The Weißach near the Gschwendmühl Bridge near the state border
Location	Germany and Austria
Reference no.	DE: 2144, AT: 811144
Basin features
Main source	On the Dreherberg (1,430 m above NN) ca. 1,360 m above sea level (NN) 47°32′03″N 10°09′37″E / 47.534047°N 10.160153°E / 47.534047; 10.160153Coordinates: 47°32′03″N 10°09′37″E / 47.534047°N 10.160153°E / 47.534047; 10.160153
River mouth	Between Langenegg and Doren into the Bregenzer Ach 465 m (AA) 47°28′30″N 9°51′16″E / 47.47500°N 9.85444°E / 47.47500; 9.85444
Progression	Bregenzer Ach → Rhine → North Sea
River system	Rhine
Tributaries	Left: Bolgenach Right: Eibelebach
Physical characteristics
Length	32.6 km

The Weißach is a 32.6-kilometre-long, right-hand, eastern tributary of the Bregenzer Ach in the German and Austrian Alps.