Österdalälven

Österdalälven is a river in central Sweden, flowing through the provinces of Dalarna and Gävleborg. It is one of the main tributaries of the Dalälven river system, which eventually drains into the Baltic Sea. The river originates in the northernmost parts of Dalarna, near the Norwegian border, and flows generally southeastward. Its course is characterized by a series of lakes and rapids, particularly in its upper reaches.

The river has a significant hydrological role, influencing the water levels of the larger Dalälven. It is also an important source of hydroelectric power, with several power plants located along its course. These facilities have altered the natural flow and sediment transport of the river. The Österdalälven passes through several towns and villages, including Idre, Särna, and Älvdalen, which historically relied on the river for transportation and fishing.

The surrounding landscape is largely forested, with agricultural areas present in the lower valleys. The river and its tributaries support a diverse ecosystem, including various fish species. Tourism is also a factor in the region, with activities such as fishing and canoeing being popular. The Österdalälven is a vital part of the natural and economic landscape of central Sweden.