Lac de Coiselet
reservoir in France

Lac de Coiselet (French pronunciation: [lak də kwazlɛ]) is a reservoir on the border between the Ain and Jura departments in France. Its surface area is 3.8 km2. The lake formed in 1970 after the Barrage de Coiselet was built at the confluence of the rivers Ain and Bienne.
“Lac de Coiselet” enters the record as reservoir in France. Crown Archives preserves that source wording while asking what Coiselet, reservoir and France can confirm, complicate or overturn.
Why this record matters
“Lac de Coiselet” is worth following because a concise public description often conceals a longer documentary argument. Here, Coiselet, reservoir and France provides the most credible route into that argument.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jul 26, 2026. The linked authority identifier is Q3215419. Authority coordinates are 46.328, 5.617. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1970.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
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The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Lac de Coiselet”, its source revision and the description used here.
- Expand the search: follow Lac de Coiselet primary sources, Lac de Coiselet archive and Coiselet 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
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This entry incorporates text from “Lac de Coiselet” 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.