Berounka

The Berounka is a river in the Czech Republic, a left tributary of the Vltava. It is about 164 kilometers long and drains parts of western and central Bohemia. The river rises in western Bohemia and flows generally eastward through the Plzeň and Central Bohemian Regions, passing towns such as Rokycany and Beroun before joining the Vltava on its left bank southeast of Prague.

The Berounka valley is noted for its natural and cultural landscape. The upper valley lies within the Křivoklát Protected Landscape Area, and the region is associated with historic castles such as Křivoklát and Točník that overlook the river. The landscape includes protected zones and areas used for recreation, farming, and tourism.

Hydrology and human use are important aspects of the Berounka. The river supports water supply for nearby communities, flood protection, and recreational activities. There are several weirs and reservoirs along its course, and the river hosts small hydroelectric facilities. Environmental conditions have improved over the past decades as pollution-control measures have been implemented, contributing to better water quality and ecological status in many segments.

Ecologically, the Berounka basin comprises diverse habitats along forested and agricultural lands. The river ultimately forms part of the Elbe river system, contributing to the flow of the Vltava and, in turn, the North Sea drainage basin.