The natural course of the river was considerably modified during the Jura water correction.

However, the previous natural bed of La Thielle still exists in some parts.

The river flows out of the lake in Biel/Bienne and after 2 km merges directly into the Nidau-Büren channel, which was also dug out during the Jura water correction, ensuring the outflow of the Aare, just before the regulating dam in Port which was commissioned in 1939.

In the seventeenth century, a grand project was formed to establish a waterway transport system connecting the rivers Rhône and Rhine via the Lake of Geneva - the Venoge - and the Canal d’Entreroches - La Thielle - Aare.

You can help Wikipedia by expanding it.This article related to a river in Switzerland is a stub.