Bienne (river)

The Bienne, also known as the Twannbach or Douanne, is a river in Switzerland. It originates in the Jura mountains and flows into Lake Biel (Lac de Bienne). The river's course primarily traverses the canton of Bern.

The Bienne plays a significant role in the drainage of the surrounding mountainous region. Historically, the river was used for powering mills and other small-scale industrial activities. Today, it contributes to the water supply and local ecosystems of the Lake Biel area. The region around the river is known for its vineyards and hiking trails.