The river Thielle (, ), is a tributary to the

Aare The Aare () or Aar () is the main tributary of the High Rhine (its discharge even exceeds that of the latter at their confluence) and the longest river that both rises and ends entirely within Switzerland. Its total length from its source to i ...

, in the Swiss Seeland. The Thielle results from the merging of the

Orbe Orbe (; ; older , ; ) is a municipality in the Swiss canton of Vaud. It was the seat of the former district of Orbe and is now part of the district of Jura-Nord Vaudois. History Orbe is first mentioned about 280 as ''Urba''. In 1179, it wa ...

and Talent, northeast of the little city of

in the Swiss

canton of Vaud Vaud ( ; , ), more formally Canton of Vaud, is one of the 26 cantons forming the Swiss Confederation. It is composed of ten districts; its capital city is Lausanne. Its coat of arms bears the motto "Liberté et patrie" on a white-green bicolou ...

. It flows as a channel northeastwards through an intensively cultivated plain called "

Plaine de l'Orbe Plaine may refer to: * Plaine (river), a tributary of the river Meurthe in France * Plaine, Bas-Rhin, a commune in Alsace in north-eastern France * Plaine-Haute, a commune in the Côtes-d'Armor department in Brittany in northwestern France * Pl ...

" and flows after only 9 km into the

Lake of Neuchâtel A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from t ...

Yverdon-les-Bains Yverdon-les-Bains () (called Eburodunum and Ebredunum during the Ancient Rome, Roman era) is a municipalities of Switzerland, municipality in the district of Jura-North Vaudois District, Jura-Nord vaudois of the canton of Vaud in Switzerland. It ...

. The natural course of the river was considerably modified during the

Jura water correction The correction of the waters of the Swiss Jura consisted of a wide series of hydrological undertakings carried out in Switzerland in the region of the three lakes: Lake Murten connected to Lake Neuchatel by the Broye Canal, the latter connec ...

. Between the Lakes of Neuchâtel and

Biel/Bienne Biel/Bienne (official bilingual wording; German language, German: ''Biel'' ; French language, French: ''Bienne'' ; Bernese German, locally ; ; ; ) is a bilingual city in the canton of Bern in Switzerland. With over 55,000 residents, it is the ...

it was converted into a dug-out channel. 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 A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Hamburg, Manch ...

which was commissioned in 1939. Before, La Thielle used to flow into the

7 km further downstream in the vicinity of

Büren an der Aare Büren an der Aare (usually abbreviated with Büren a.A., means ''Büren on the Aare'') is a historic town and a municipality in the Seeland administrative district in the canton of Bern in Switzerland. History Büren an der Aare is first ment ...

. In the seventeenth century, a grand project was formed to establish a waterway transport system connecting the rivers

Rhône The Rhône ( , ; Occitan language, Occitan: ''Ròse''; Franco-Provençal, Arpitan: ''Rôno'') is a major river in France and Switzerland, rising in the Alps and flowing west and south through Lake Geneva and Southeastern France before dischargi ...

and

Rhine The Rhine ( ) is one of the List of rivers of Europe, major rivers in Europe. The river begins in the Swiss canton of Graubünden in the southeastern Swiss Alps. It forms part of the Swiss-Liechtenstein border, then part of the Austria–Swit ...

via the

Lake of Geneva Lake Geneva is a deep lake on the north side of the Alps, shared between Switzerland and France. It is one of the List of largest lakes of Europe, largest lakes in Western Europe and the largest on the course of the Rhône. Sixty percent () ...

- the Venoge - and the

Canal d’Entreroches Canals or artificial waterways are waterways or river engineering, engineered channel (geography), channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport watercraft, vehicles (e.g. ...

- La Thielle -

. It unfortunately remained unfinished. A commercial

waterway A waterway is any Navigability, navigable body of water. Broad distinctions are useful to avoid ambiguity, and disambiguation will be of varying importance depending on the nuance of the equivalent word in other ways. A first distinction is ...

of this nature would have had a very significant impact on the European commercial transportation system.

References

Vielle Thielle Canal de la Thielle
Rivers of Switzerland Tributaries of Lake Neuchâtel Bern–Neuchâtel border Rivers of the canton of Bern Rivers of the canton of Vaud Rivers of the canton of Neuchâtel {{Switzerland-river-stub

See also

References