Weißach (Bregenzer Ach)

Weißach
The Weißach near the Gschwendmühl Bridge near the state border
Location
CountriesGermany and Austria
Reference no.DE: 2144, AT: 811144
Physical characteristics
Source 
  locationOn the Dreherberg (1,430 m above NN)
  coordinates47°32′03″N 10°09′37″E / 47.534047°N 10.160153°E / 47.534047; 10.160153
  elevationca. 1,360 m above sea level (NN)
Mouth 
  location
Between Langenegg and Doren into the Bregenzer Ach
  coordinates
47°28′30″N 9°51′16″E / 47.47500°N 9.85444°E / 47.47500; 9.85444
  elevation
465 m (AA)
Length33.5 km (20.8 mi)
Basin size216 km2 (83 sq mi)
Basin features
ProgressionBregenzer AchLake ConstanceRhineNorth Sea
Tributaries 
  leftBolgenach
  rightEibelebach

The Weißach is a 33.5-kilometre-long (20.8 mi), right-hand, eastern tributary of the Bregenzer Ach in the German and Austrian Alps. It forms a very short section of the Austria–Germany border, just south of the confluence with the Eibelebach. It flows into the Bregenzer Ach near Doren.