The Berounka is a river in the Czech Republic, 138.2 km (85.9 mi) long,[1] the biggest left tributary of Vltava, draining an area of 8,708 km2 (3,362 sq mi). It carries the name Mže (German: Mies) for 105.2 kilometres (65.4 mi)[1] from its source in Germany, next to the Czech border, until its confluence with the 109.7-kilometre (68.2 mi)[1] Radbuza in Pilsen. It then continues with the name of Berounka until it enters the Vltava on the edge of Prague. Originally, the entire stream was called Mže, but in the 17th century the lower course started to be named after the town Beroun, lying upon it.

The Berounka under Tetín
The Berounka with its two sources the Mže (northern) and the Radbuza (southern) until its confluence with the Vltava (magenta), also showing its watershed
CountryCzech Republic
CitiesTachov, Stříbro, Plzeň, Beroun, Prague
Physical characteristics
  locationGriesbacher Wald, Germany
  coordinates49°51′10″N 12°28′00″E
  elevation726 m (2,382 ft)
2nd sourceRadbuza
  locationCzech Republic
  coordinates49°29′13″N 12°39′58″E
  elevation869 m (2,851 ft)
Source confluencePilsen
49°59′43″N 14°24′05″E
Length138.2 km (85.9 mi)[1]
Basin size8,708 km2 (3,362 sq mi)
  average36 m3/s (1,300 cu ft/s)
Basin features
ProgressionVltavaElbeNorth Sea

The river is a favourite destination among canoeists, who enjoy the picturesque sceneries around, especially when it flows along the Křivoklátsko Landscape Protected Area where three castle ruins tower over the Berounka river valley.


  1. Complete table of the Bavarian Waterbody Register by the Bavarian State Office for the Environment (xls, 10.3 MB)

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