Kolbäcksån is a

river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

located in

Bergslagen Bergslagen is a historical, cultural, and linguistic region located north of Lake Mälaren in northern Svealand, Sweden, traditionally known as a mining district. In Bergslagen, the mining and metallurgic industries have been important since t ...

in the middle of

Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...

. It is about 180 kilometres long, arises in the province

Dalarna Dalarna (; ), also referred to by the English exonyms Dalecarlia and the Dales, is a (historical province) in central Sweden. Dalarna adjoins Härjedalen, Hälsingland, Gästrikland, Västmanland and Värmland. It is also bordered by Nor ...

and flows through the province of

Västmanland Västmanland ( or ) is a historical Swedish province, or , in middle Sweden. It borders Södermanland, Närke, Värmland, Dalarna and Uppland. Västmanland means "West Man Land" or, less literally, "The Land of the Western Men", where the "we ...

into the

Mälaren Mälaren ( , , or ), historically referred to as Lake Malar in English, is the third-largest freshwater lake in Sweden (after Vänern and Vättern). Its area is and its greatest depth is 64 m (210 ft). Mälaren spans from east to west. The l ...

. The river drains an area of approximately 3,100 km² and has an average discharge of 27 m³/s. The city of

Fagersta Fagersta is a locality and the seat of Fagersta Municipality in Västmanland County, Sweden, with 11,130 inhabitants in 2010. Geography The city is located at the junction of two railways between Ludvika-Västerås and Avesta (Krylbo)-Örebro ...

lies on the river and the

Strömsholm Canal The Strömsholm Canal () runs from Smedjebacken Smedjebacken is a Urban areas in Sweden, locality and the seat of Smedjebacken Municipality, Dalarna County, Sweden, with 5,100 inhabitants in 2010. Geographically, the town Smedjebacken is situat ...

follows the river about 100 kilometres.

References

Rivers of Västmanland County Norrström basin Rivers of Dalarna County {{Sweden-river-stub