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Berounka vyhled Tetin 4326.JPG
The Berounka under Tetín
Country Czech Republic
Cities Tachov, Stříbro, Plzeň, Beroun, Prague
Primary source Mže
 - location Griesbacher Wald, Germany
 - elevation 726 m (2,382 ft)
 - length 105.2[1] km (65.4 mi)
 - coordinates 49°51′10″N 12°28′00″E / 49.85278°N 12.46667°E / 49.85278; 12.46667
Secondary source Radbuza
 - elevation 869 m (2,851 ft)
 - length 109.7[1] km (68.2 mi)
 - coordinates 49°29′13″N 12°39′58″E / 49.48694°N 12.66611°E / 49.48694; 12.66611
Source confluence Pilsen
Mouth Vltava
 - location Prague
 - coordinates 49°59′43″N 14°24′05″E / 49.99528°N 14.40139°E / 49.99528; 14.40139Coordinates: 49°59′43″N 14°24′05″E / 49.99528°N 14.40139°E / 49.99528; 14.40139
Length 138.2[1] km (85.9 mi)
Basin 8,708[1] km2 (3,362 sq mi)
Discharge mouth
 - average 36 m3/s (1,271 cu ft/s)
Progression VltavaElbeNorth Sea
Berounka (CZE) - location map.svg
The Berounka with its two sources the Mže (northern) and the Radbuza (southern) until its confluence with the Vltava (magenta), also showing its watershed
The Berounka under Krašov Castle

The Berounka is a river in the Czech Republic, the biggest left tributary of Vltava. It carries the name Mže (German: Mies) from its source in Germany, next to the Czech border, until its confluence with the Radbuza in Pilsen. It then continues under 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 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. ^ a b c d Complete table of the Bavarian Waterbody Register by the Bavarian State Office for the Environment (xls, 10.3 MB)