Thielle
tributary to the Aare River
The river Thielle (French: Thielle or French: Thièle [tjɛl]; German: Zihl [tsiːl]) is a tributary to the Aare, in the Swiss Seeland.
The Thielle results from the merging of the Orbe and Talent, northeast of the little city of Orbe in the Swiss canton of Vaud. It flows as a channel northeastwards through an intensively cultivated plain called "Plaine de l'Orbe" and flows after only 9 km into the Lake of Neuchâtel at Yverdon-les-Bains.
The natural course of the river was considerably modified during the Jura water correction. Between the Lakes of Neuchâtel and Biel/Bienne 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 which was commissioned in 1939. Before, La Thielle used to flow into the Aare 7 km further downstream in the vicinity of Büren an der Aare.
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. It remained unfinished.
“Thielle” enters the record as tributary to the Aare River. Crown Archives preserves that source wording while asking what Thielle, tributary and Aare can confirm, complicate or overturn.
Why this record matters
“Thielle” is worth following because a concise public description often conceals a longer documentary argument. Here, Thielle, tributary and Aare provides the most credible route into that argument.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Sep 12, 2026. The linked authority identifier is Q24792. The first chronological checks are 1939.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Thielle”, its source revision and the description used here.
- Expand the search: follow Thielle primary sources, Thielle archive and Thielle research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Thielle”?
- Which authority defined the place, boundary or structure at the relevant date?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Thielle” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.